CN107120103B - A kind of fracture acidizing cleanup additive - Google Patents
A kind of fracture acidizing cleanup additive Download PDFInfo
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- CN107120103B CN107120103B CN201710347464.3A CN201710347464A CN107120103B CN 107120103 B CN107120103 B CN 107120103B CN 201710347464 A CN201710347464 A CN 201710347464A CN 107120103 B CN107120103 B CN 107120103B
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- cleanup additive
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- 238000000034 method Methods 0.000 claims abstract description 33
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 84
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 64
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- 239000000203 mixture Substances 0.000 claims description 33
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- 239000002904 solvent Substances 0.000 claims description 11
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- 239000004215 Carbon black (E152) Substances 0.000 claims description 9
- 239000006184 cosolvent Substances 0.000 claims description 7
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- 230000000052 comparative effect Effects 0.000 description 13
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
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- 229920000570 polyether Polymers 0.000 description 7
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- 238000006243 chemical reaction Methods 0.000 description 6
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- 229940008099 dimethicone Drugs 0.000 description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 4
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- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
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- KXSDPILWMGFJMM-AEJSXWLSSA-N (1s,4r,5r)-4-methyl-1-propan-2-ylbicyclo[3.1.0]hexan-4-ol Chemical compound C([C@]1(O)C)C[C@]2(C(C)C)[C@H]1C2 KXSDPILWMGFJMM-AEJSXWLSSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 150000003973 alkyl amines Chemical class 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
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- 238000010276 construction Methods 0.000 description 2
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- SWGZAKPJNWCPRY-UHFFFAOYSA-N methyl-bis(trimethylsilyloxy)silicon Chemical compound C[Si](C)(C)O[Si](C)O[Si](C)(C)C SWGZAKPJNWCPRY-UHFFFAOYSA-N 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
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- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
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- 150000003505 terpenes Chemical class 0.000 description 2
- OOCCDEMITAIZTP-QPJJXVBHSA-N (E)-cinnamyl alcohol Chemical compound OC\C=C\C1=CC=CC=C1 OOCCDEMITAIZTP-QPJJXVBHSA-N 0.000 description 1
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- DUVVGYBLYHSFMV-YGEZULPYSA-N 4-methyl-n-[[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]carbamoyl]benzamide Chemical compound C1=CC(C)=CC=C1C(=O)NC(=O)N[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 DUVVGYBLYHSFMV-YGEZULPYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
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- 239000002280 amphoteric surfactant Substances 0.000 description 1
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- 125000004429 atom Chemical group 0.000 description 1
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- 229960003237 betaine Drugs 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
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- 239000004519 grease Substances 0.000 description 1
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- HLERILKGMXJNBU-UHFFFAOYSA-N norvaline betaine Chemical compound CCCC(C([O-])=O)[N+](C)(C)C HLERILKGMXJNBU-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001983 poloxamer Polymers 0.000 description 1
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- 229930004725 sesquiterpene Natural products 0.000 description 1
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- 238000007493 shaping process Methods 0.000 description 1
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- 125000001424 substituent group Chemical group 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- DPJRMOMPQZCRJU-UHFFFAOYSA-M thiamine hydrochloride Chemical compound Cl.[Cl-].CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N DPJRMOMPQZCRJU-UHFFFAOYSA-M 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- KXSDPILWMGFJMM-UHFFFAOYSA-N trans-sabinene hydrate Natural products CC1(O)CCC2(C(C)C)C1C2 KXSDPILWMGFJMM-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5086—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
Abstract
The present invention relates to a kind of discharge aiding methods of fracture acidizing cleanup additive, discharge aiding method is by each component of cleanup additive by least having input unit, injection unit and the mixing arrangement of control unit are mixed in the asynchronous mode of timesharing and are injected in oil/gas well, input unit is based on the control information of control unit by component by the way that timesharing inputs in injection unit in a manner of being pressurized with the matched specified intake pipeline of its flow characteristics parameter, injection unit includes being provided with the first mixer, the input hole on hole wall is arranged in at least one in the mixing duct of second mixer and third mixer, injection unit carries out the specified injection rate for the component of analysis generation injected with the control information of time correlation according to timesharing based on control unit to the flow characteristics parameter of component and the component proportion of cleanup additive, it specifies injecting time and/or injects simultaneously at least Assigned rate ratio between two kinds of components injects component in oil/gas well.Discharge aiding method of the invention significantly improves the row's of helping effect.
Description
Technical field
The present invention relates to a kind of fracture acidizing cleanup additive field more particularly to a kind of rows of helping of fracture acidizing cleanup additive
Method.
Background technique
For acidizing fracturing process, it is one huge that the best theory for reaching cleanup additive at the construction field (site), which is returned row and led,
Challenge.Technological difficulties are how to improve cleanup additive and acidizing and fracturing fluid and its need the mixing of various other additives to be added
Degree, and the stability of acidizing and fracturing fluid entirety cannot be influenced.Compared with laboratory, in each element in construction site the time and at
Originally be it is most important, how to be spent within the least time least cost obtain best mixed effect be one be worth research
The problem of.
Fracture acidizing technique is the important measures of hypotonic special low permeability oil field reservoir reconstruction, is to realize that fine and close oil gas is kept
Imitate the dominant technology of exploitation.Fracturing fluid recovery (backflow) rate how is improved, fracturing fluid water-sensitive, water blocking damage caused by reservoir is reduced, is
Improve one of the key factor of fracturing effect.Cleanup additive is oil recovery pressure break, essential additive in acidizing treatment, it can be dropped
Low surface tension, improve operation liquid anti-row's speed and anti-row leads.The action principle of cleanup additive be surfactant in the earth formation
The interfacial tension between rock surface and water can be reduced and change the wettability of rock surface, make rock to the wetting table of water
Non-wetted surface is changed into reduce stratum capillary pressure in face, is advantageous for the discharge of aqueous fracturing fluid raffinate in this way.Together
When, aqueous fracturing fluid, which enters reservoir, can cause clay mineralizer hydration swelling, dispersion migration, and remaining working liquids may be on ground
Under the suction-operated of layer capillary, the injury to stratum is caused.Strata pressure is generally inadequate to overcome capillary resistance, cannot incite somebody to action
Working liquids are discharged from pore channel, thus it is necessary to use cleanup additive to reduce the surface and interface tension of working liquids,
It reduces capillary pressure and changes the wetting situation on stratum, working liquids can both have been made to be easily accessible stratum, reduce entry pressure, again
Be conducive to the row of returning of working liquids.
It data show that on stratum, wherein most water seal is stagnant for 60~90% injection liquid holdups in shale gas pressure break
It stays in fracturing fracture periphery and pressure break gap.These closing fluid retentions can seriously reduce stratum relative permeability, reduce and produce
Amount.It is an important problem that these liquid, which how are discharged,.Many cleanup additives not of the same race have been reported to be used to that post-fracturing liquid is discharged
Body, reduction are mutually closed.
Chinese patent CN105176511A discloses a kind of acidizing and fracturing fluid cleanup additive of function admirable, specifically disclose as
A kind of lower feature: acidizing and fracturing fluid cleanup additive of function admirable, which is characterized in that be with alkyl polyoxyethylene ether surfactant
It is main, it supplemented by aliphatic acid polyethenoxy ether, is compounded with quaternary ammonium salt, enhancing surfactant reduces surface tension and oil-water interfaces
The ability of tension, while fatty alcohol and methanol is added plays the role of increasing grease and dissolve each other, or for raising surface tension utilization rate and
Play the role of sacrifice agent.However the patent provide acidizing and fracturing fluid cleanup additive the problem is that: (1) cleanup additive use
Quaternary ammonium salt, but and cosolvent is not used, it is contemplated that rock surface is usually negatively charged, cationic surfactant easily makes rock
Wettability reversal, which occurs, hinders crude oil to smoothly flow out, although quaternary ammonium salt improves anti-row's efficiency remaining season to a certain extent
Ammonium salt will greatly reduce crude oil quantum of output in process of production；(2) alkyl phenol polyoxyethylene ether is nonionic surfactant, right
Soda acid and oxidant are all very stable, not facile hydrolysis, have good surface-active, but the concentration of its metabolin is far below aquatic organism
The sharply minimum of toxicity, some countries of mid-term the 1980s have begun proposal and support limitation or be forbidden to use such table
Face activating agent.
The mixing of acidizing and fracturing fluid at present all using traditional by the way of, it is mainly first artificial calculate, weighing, then by concentrated acid,
In clear water and various additives injection fluid reservoir, by manually carrying out circulation complex acid in conjunction with live simple device, acid solution is realized
Uniformly mixture.For cleanup additive of the invention, this mode mainly has there are many problems:
(1) fracture acidizing of the present invention is a kind of multicomponent additive with cleanup additive, when being mixed in advance with acidizing and fracturing fluid
Timing, since acidizing and fracturing fluid overall volume is very big and viscosity is very high, so cannot realize that cleanup additive and acidification are pressed well
The mixing between liquid is split, is especially unable to reach being thoroughly mixed between cleanup additive component completely, largely effects on its anti-row's efficiency.
(2) intermittent (to shift to an earlier date multicomponent cleanup additive in a separate device with liquid since acidizing and fracturing fluid demand is big
Add among acidizing and fracturing fluid and mixed after mixing completely) a large amount of acid storage tank is needed, fracturing unit is at high cost, scene
The large labor intensity of staff.
(3) each component of cleanup additive is directly added into acidizing and fracturing fluid to be stirred using high intensity and will accelerates polymer
The degradation of additive, and it is extremely difficult to being thoroughly mixed between cleanup additive component, while having an effect on the effect of fracture acidizing operation
Fruit.
Summary of the invention
For the deficiencies of the prior art, the present invention provides a kind of discharge aiding method of fracture acidizing cleanup additive, features
It is, the discharge aiding method is by each component of cleanup additive by least having input unit, injection unit and control unit
Mixing arrangement mixed and injected in the oil/gas well in the asynchronous mode of timesharing, the input unit be based on described control unit
Control information the component is passed through it is defeated with the matched specified intake pipeline timesharing in a manner of being pressurized of its flow characteristics parameter
Enter in the injection unit, the injection unit includes being provided with mixing for the first mixer, the second mixer and third mixer
It closes duct and the input hole on hole wall is arranged at least one, the injection unit is based on described control unit to the component
The component proportion of flow characteristics parameter and the cleanup additive carry out analysis generation with the control information of time correlation according to timesharing
The specified injection rate of the component of injection specifies injecting time and/or injects the assigned rate between at least two components simultaneously
Ratio injects the component in the oil/gas well.Discharge aiding method of the invention can be accurately by the row's of helping component in optimum efficiency
When inject oil/gas well.Especially for the component with conflict, it is mutual that component can be avoided using the method for the asynchronous injection of timesharing
It influences to can be improved the row's of helping effect again.
So that component is not in contact with each other in injection is the insurmountable problem of the prior art.Preferably, institute of the invention
The axial line and vertical direction for stating input hole have different angle, are provided in the input hole based on described control unit
The resistance valve of the information adjustment injection rate of component, spray angle and/or injecting time is controlled, described control unit is based on described
The axial line of input hole and angle, the preset injection rate of the resistance valve, the spray angle, the intake pipeline of vertical direction
Length, the input duration of the injection track difference between component described in the Stress appraisal in intake pipeline and/or intake pipeline
Difference, and according to the input duration difference of the injection track difference and/or intake pipeline preset that the component injects when
Between be spaced so that injection track zero crossing of the component in injection process of timesharing injection.The present invention by intake pipeline and
The assessment of input hole parameters determines the injection track of component, so that it is determined that the interval duration of component injection makes component proper
When time injection, neither conflict with other components and there is the row's of helping effect, so that the efficiency for the row of helping is improved, when saving
Between.
The input hole is included at least for the first input hole to first mixer injection component, the second input
Between hole, third input hole and at least one setting and second mixer and the third mixer and for described the
Three input mixers inject the 4th input hole of the component, and the horizontal position of second input hole is lower than first input
The water of the horizontal position in hole and the horizontal position of the third input hole between first input hole and second input hole
Prosposition makes three kinds of components of the cleanup additive inject first mixer in a manner of asynchronous between setting, and the described 4th is defeated
The horizontal position for entering hole is lower than the horizontal position of second input hole, wherein the temperature control device of first mixer is based on
The described control unit preset time is heated to assigned temperature, and the 4th input hole is based on the preset injection of described control unit
Time, jet velocity and spray angle by the 4th component with institute that the third mixer is delivered to by second mixer
State the component of the first input hole, the second input hole and/or the injection of third input hole the asynchronous mode of mixture inject it is described
In third mixer.The setting of input hole in mixing arrangement of the invention enable component timesharing inject, solve how
Abundant timesharing between component is set to be injected with the technical problem not wasted time.The present invention by input pore structure itself difference into
Row timesharing avoids the problem that the shorter component of timeliness fails since time interval is too long, improves the row's of helping effect of component.
Preferably, the angle of the first input hole, the axial line of the second input hole and third input hole and vertical direction has
Difference and angle are gradually reduced so that the injection track of the component is non-cross, alternatively, first input hole and institute
The axial line for stating the second input hole is identical as the angle of vertical direction, and the axial line of third input hole and the angle of vertical direction are small
In the axial line and vertical direction of first input hole and the second input hole angle so that the third input hole infuse
Second component of the first component and second input hole input that the third component entered is injected in first input hole is simultaneously
It injects and delays injection after the first mixer again.The present invention realizes injection track difference by the difference of angle, has been isolated different groups
The injection divided contacts possibility and has distinguished the time of injection, this is to influence greatly on the reaction effect of different component.Therefore,
Discharge aiding method of the invention is more advantageous to the abundant reaction of the row's of helping component.
Preferably, the input unit includes the supercharging device and trigger device for the transport component in a manner of pressurization,
The trigger device triggers warning information, the control based on the pressure data of the pressure acquisition device feedback in the polymerization duct
The pressurization parameter and/or the solenoid valve parameter that unit processed adjusts the supercharging device based on the warning information are so as to adjust institute
The pressure in polymerization duct is stated to non-alert status.Trigger device of the invention can trigger warning information according to pressure data,
To prevent polymerization duct to be damaged since pressure is excessive, the addition progress of cleanup additive is influenced.Control unit of the invention
The pressure in polymerization duct is adjusted by regulation pressurization parameter and/or the solenoid valve parameter, so that the pressure in polymerization duct
Power is reduced to non-alert status, and the addition without interrupting cleanup additive, effect is more preferable, more efficient.
Preferably, first mixer is tapered and inner wall is provided with its depth parameter of fluid flow direction gradually
The lesser taper port of the helicitic texture and first mixer that become smaller and the protrusion radian direction of second mixer
Relatively, so that each component in the first mixer is mixed in the case where flow resistance gradually becomes smaller and to inject described second mixed
Clutch, second mixer are provided at least one dispensing passage for being distributed and intersecting intercommunication in honeycomb, the first mixing
The entrance of the dispensing passage on arched surface of the object by being distributed in the arch honeycomb dispersion plate repeats to converge and divide
From and from be distributed in the arch honeycomb dispersion plate the outlet of the dispensing passage at both ends be injected into third mixing
Device.The helicitic texture of first mixer inner walls of the invention, can be such that component is sufficiently mixed in flow process, helicitic texture
Depth parameter gradually becomes smaller the flow resistance for reducing component.The setting of second mixer helps to receive the first mixture, and
And the first mixture after dispersion is aggregated in again in third mixer.The setting in polymerization duct of the invention facilitates the row of helping
The formation and addition of agent, obtained cleanup additive effect stability.
Preferably, the polymerization duct is additionally provided with sealing spray disk, and the sealing spray disk is set to the third mixer
Taper small end mouth at coupled to be injected in the second mixture formed in third mixer with the injection unit
In oil/gas well, the sealing spray disk adjusts at least one nozzle of the sealing spray disk based on the control information of described control unit
Injection rate, so as to adjust it is described polymerization duct pressure.Sealing spray disk enables cleanup additive to be uniformly injected in well, close
Also Xiang Jingzhong discharge pressure, the increase of pressure facilitate stream of the cleanup additive in well to envelope spray disk while exclusion is shared in injection
It is dynamic, to improve the additive effect and addition efficiency of cleanup additive, avoid cleanup additive adhesive aggregation together.In adjusting solenoid valve parameter meeting
In the case where the quality proportioning for influencing the component of cleanup additive, extra pressure is excluded by nozzle, both reduces polyplant
Risk, and promote the addition of cleanup additive.
According to a preferred embodiment, the cleanup additive includes at least surfactant, solvent, cosolvent and water,
In, the surfactant is silicone surfactant, and the solvent is terpene hydrocarbon, and the cosolvent is with 1 to 4 carbon
The alkylol of atom, oligomeric-oxyalkylene with 1 to 3 ethylene oxide and oligomeric-oxygen with 1 to 3 propylene oxide are sub-
One of alkyl is a variety of.The terpene hydrocarbon includes monoterpene, 4- terpenol, sabinene hydrate, terpenes methylol, terpenes ether
One of alcohol, sesquiterpene, rosin hydrocarbon and turpentine oil are a variety of.The cleanup additive of the present embodiment is existing in the row of helping of shale oil-gas reservoir
There is significant effect in field.Fracture acidizing cleanup additive of the present invention can significantly reduce surface tension, increase water contact angle, drop
Lower capillary force improves the row's of returning efficiency of injection fluid.
According to a preferred embodiment, cleanup additive further includes additional surfactants, wherein the siloxane surface is living
Property agent accounts for the 2%~60% of the cleanup additive weight.Preferably, silicone surfactant accounts for the 10% of the cleanup additive weight
~15%.Best, silicone surfactant accounts for the 10% of the cleanup additive weight.The additional surfactants account for described
The 0%~30% of cleanup additive weight.Preferably, the additional surfactants account for the 10%~35% of the cleanup additive weight.
Best, the additional surfactants account for the 25% of the cleanup additive weight.Preferably, the additional surfactants are the moon
Cinnamic alcohol polyoxyethylene ether, sulfosuccinic acid dihexyl salt, SYNPERONIC PE/F68, alkyl sulfate, sulfonate, carboxylic
Hydrochlorate, amine-oxides, level-one alkylamine, alkyl diamine, one of ethoxylated fatty amines or a variety of.Cleanup additive of the invention
Have the function of repair reservoir permeability, with it is existing help isostere system compared with, it is close that oil/gas well in well fracturing acidization can be reduced
50% or more reservoir damage degree caused by well band water lock, residue and formation fluid are incompatible.
According to a preferred embodiment, the silicone surfactant is the polymer with following below formula:
MDa(D'R1)bM,(M'R1)Da(M'R1),(M'R1)Da(M'R2),
(M'R1)Da(D'R1)b(M'R1),Tz(T'R1)c,(M'R1)
tMuQv,[(D'R1)Dk]；
Wherein, " R1" indicate the organic group having the following structure :-(CH2)n-(OCH2CH2)x-(OCH(CH3)CH2)y-
OR3；Wherein, " n " is the integer of 3-11, and " x " is the integer of 3-30, and " y " is the integer of 1-30, " R3" be selected from-H ,-Me and-
OC(O)CH3；Wherein, " M " indicates Me3Si01/2, " D " expression-Me2SiO-, " T " expression-MeSi03/2, " Q " expression-
Si02, " M' " indicates Me2(R)Si01/2, " D' " expression-Me (R) SiO-, " T' " expression-RSi03/2, " Me " expression-
CH3, " R " indicates H, wherein " a " is the integer of 1-200.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mixing arrangement of the invention；With
Fig. 2 is the structural schematic diagram in mixing duct of the invention.
Reference signs list
10: input unit 20: injection unit 30: well head
11: the first intake pipeline, 12: the second intake pipeline 13: third intake pipeline
14: the four intake pipeline, 15: the first solenoid valve 16: second solenoid valve
17: 18: the four solenoid valve 40 of third solenoid valve: control unit
50: mixing 60: the first mixer of duct, 61: the second mixer
62: third mixer 64: sealing spray disk 65: nozzle
70: supercharging device 80: trigger device 90: temperature control device
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
The present invention provides a kind of fracture acidizing cleanup additive, is mixed and is added especially by isolated mixing adder
The multicomponent fracture acidizing cleanup additive added, which is characterized in that the cleanup additive includes at least surfactant, solvent, hydrotropy
Agent and water, wherein the surfactant is silicone surfactant, and the solvent is terpene hydrocarbon, and the cosolvent is tool
There are the alkylol of 1 to 4 carbon atoms, oligomeric-oxyalkylene with 1 to 3 ethylene oxide and there are 1 to 3 propylene oxide
One of oligomeric-oxyalkylene or a variety of.Silicone surfactant have excellent interface performance, wetting and spreading and
Permeability.Silicone surfactant has sufficient amount of polar molecule group, can keep surface-active in the solution.Silicon
Oxygen alkane surfactant has amphiphatic molecule, wherein hydrophobic polysiloxane group is connect with one or more hydrophilic radicals.Silicon
Oxygen alkane surfactant is copolymer or molecule with molecular weight roughly the same with traditional organic surface active agent.In hydrotropy
Under the conditions of agent is existing, the terpene hydrocarbon as solvent with nanoscale even particulate dispersion in water.Wherein, siloxane surface is living
Property agent can reinforce the characteristic of terpenes hydrocarbon solvent in such a situa-tion so that entire nanoscale fluid keeps stablizing.The present invention
Cleanup additive homogeneous phase transparent, Thermodynamically stable improve the wetability of rock while reducing capillary pressure so that residual
Cleanup additive in the earth formation generates beneficial effect, also, this cleanup additive category pure green degradable substance to oil gas field subsequent production,
No pollution to the environment, surface tension 27.77mN/m, interfacial tension 0.6340mN/m, the row's of helping better performances.
As shown in Figure 1, mixing arrangement of the invention includes input unit 10, injection unit 20 and control unit 40.Input
Unit 10 includes supercharging device 70 and trigger device 80.Control unit 40 in a wired or wireless manner with pressure apparatus 70 and touching
Transmitting apparatus 80 connects.
Input unit 10 is used at least one component materials inputting injection unit 20 by least one intake pipeline.It is defeated
Entering unit 10 includes pressure apparatus 70, trigger device 80 and at least one intake pipeline.Input unit 10 is set by least one
The intake pipeline for being equipped with solenoid valve is connect with the input pipe of injection unit 20.Intake pipeline includes the first intake pipeline 11, second
Intake pipeline 12, third intake pipeline 13 and the 4th intake pipeline 14.Preferably, the quantity of input pipe and intake pipeline is not limited to
It four, can also increase or decrease according to the actual situation.
One end that intake pipeline is contacted with the input pipe of injection unit 20 is provided with solenoid valve.Preferably, solenoid valve is base
In the automatic electromagnetic valve of control information adjust automatically.
Pressure apparatus 70 is used to input component materials to intake pipeline and be pressurized.Pressure apparatus 70 is including storage device and extremely
A few pump.Storage device and pump connection.Pump is connect with intake pipeline.
Trigger device 80 is connect in a wired or wireless manner with pressure apparatus 70.Preferably, the hole wall in main aperture road 50 is set
It is equipped at least one pressure acquisition device.Pressure acquisition device includes pressure sensor.Pressure sensor and trigger device 80 with
Wirelessly connect.Pressure acquisition device acquires the pressure in main aperture road and pressure data is sent to trigger device 80.
Injection unit 20 is coupled with well mouth of oil well 30.As shown in Fig. 2, injection unit includes mixing duct 50.Mix duct
50 are provided with the first mixer 60, the second mixer 61 and third mixer 62.
First mixer 60 is based on the control information of described control unit 40 by the input unit 10 by least
At least one component of one intake pipeline input for being provided with solenoid valve forms the first mixture with the temperature mixing limited.The
Temperature control device 90 is provided on one mixer, for controlling the temperature of the first mixer, so that the component of the first mixture
It is mixed in optimum temperature.
First mixer 60 is tapered and inner wall is provided with and gradually becomes smaller with its depth parameter of fluid flow direction
Helicitic texture, the lesser taper port of first mixer 60 and the protrusion radian direction phase of second mixer 61
It is right.Preferably, component is discharged into the first mixer by the first intake pipeline 11, the second intake pipeline 12 and third intake pipeline 13
Entrance.First mixer has the both ends to differ in size.The entrance of first mixer is biggish taper port.Outlet is smaller
Taper port.The depth of helicitic texture is gradually become shallower as with the reduction of taper bore, in this way convenient for reduction fluid
Resistance is more advantageous to the mixing and reaction of component.Meanwhile pyramidal structure setting so that intake pipeline input at least one group
Divide and form whirlpool in the first mixer, so that component is homogenously mixed together.
Second mixer 61 is arch honeycomb dispersion plate.The outlet end of second mixer 61 setting and the first mixer.
By first mixture, along the channel that honeycomb is distributed, dispersion is delivered to the third mixer 62 to second mixer 61.
Preferably, arch honeycomb dispersion plate includes the arched surface of protrusion and the curved surface of recess.Second mixer
61 i.e. arch honeycomb dispersion plate is provided at least one dispensing passage for being distributed and intersecting intercommunication in honeycomb.Dispensing passage
Intersecting intercommunication makes the first mixture carry out multiple polymerization and dispersion in channel, is conducive to the abundant of the first component of mixture
Mixing.The entrance of the dispensing passage is distributed on the arched surface of the arch honeycomb dispersion plate, and the dispersion is logical
The outlet in road is distributed in the both ends of the arch honeycomb dispersion plate.Entrance distribution is on arched surface, and the first mixture is from the
After the outlet of one mixer reserves, the second mixer can be fully entered, is blocked without assembling.Outlet is arranged in arch honeycomb
Shape dispersion plate is easy so that fully entering third mixer after the first mixture convergence reserved in the second mixer in third
Whirlpool is formed in mixer and is mixed, and mixed effect is promoted.
The third mixer 62 is tapered and the port of larger one end and the recess radian of second mixer (61)
Direction is opposite.Recess radian facilitates the first mixture and gathers to the center of third mixer.Preferably, the 4th intake pipeline 14
It is arranged on the hole wall between the second mixer and third mixer.The third mixer 62 is by the first mixture and at least one
Kind component is gathered in a manner of eddy flow is mixed to form the cleanup additive.Be conducive in this way cleanup additive upon mixing the phase be added to it is new
Component.
The conical by its shape of third mixer is provided with the component conducive to cleanup additive and is sufficiently mixed and reacts, and maintains cleanup additive
Effect stability.Even if the 4th intake pipeline 14 does not input new component, third mixer is mixed to the second mixer is discharged first
It closes object and is gathered mixing again, can also promote the effect of cleanup additive.
Preferably, polymerization duct 50 is additionally provided with sealing spray disk 63, and the sealing spray disk 63 is set to the third mixing
To which the second mixture formed in third mixer 62 to be injected in and the injection unit at the taper small end mouth of device 62
In the well of 20 couplings.
Pressure data triggering of the trigger device 80 based on the pressure acquisition device feedback in the polymerization duct 60 is pre-
Alert information.
Trigger device 80 is based on the pressure rating in preset grade threshold ranging assessments main aperture road.Touching device 80 prestores
There is at least one pressure rating prediction scheme corresponding with pressure rating.Pressure rating includes first class pressure, secondary pressure and three-level pressure
Power.The pressure limit of first class pressure are as follows: 0.1MPa≤p < 1.6MPa；The pressure limit of secondary pressure are as follows: 1.6MPa≤p <
10.0MPa；The pressure limit of three stage pressures are as follows: 10MPa≤p < 100MPa.
For example, pressure rating prediction scheme includes first class pressure grade prediction scheme, secondary pressure grade prediction scheme, three-level pressure rating is pre-
Case.First class pressure grade prediction scheme are as follows: increase the defeated pressure pressure of pressure apparatus 70, adjusting solenoid valve is to increase flow rate.Two
Stage pressure grade prediction scheme are as follows: the defeated pressure pressure of pressurizer 70, not adjusting solenoid valve.For three-level pressure rating prediction scheme
Are as follows: warning information is issued, while reducing the defeated pressure pressure of pressure apparatus 70, adjusting solenoid valve is to reduce flow rate.
Described control unit 40 based on the warning information adjust the supercharging device 70 pressurization parameter and/or the electricity
Magnet valve parameter is so as to adjust the pressure in the polymerization duct to non-alert status.
Preferably, adjustment pressurization parameter can adjust the pressure of intake pipeline, and adjusting solenoid valve parameter can be by input pipe
The pressure output of line is to duct is polymerize, therefore, adjust the supercharging device 70 pressurization parameter and/or the solenoid valve parameter energy
The pressure polymerizeing in duct is enough adjusted to non-alert status
The sealing spray disk 63 adjusts at least the one of the sealing spray disk 63 based on the control information of described control unit 40
The injection rate of a nozzle 64, so as to adjust the pressure in the polymerization duct 50.Nozzle can also subtract while spraying cleanup additive
Pressure in small polymerization duct.Therefore, the number and injection rate for adjusting nozzle 64 can adjust the pressure in polymerization duct.
Preferably, control unit 40 determines the flow rate ratio of each solenoid valve based on the concentration and proportion of component materials
Example.Control unit 40 corrects the flow rate of each solenoid valve based on the data on flows that flowmeter monitors.
Although the flow rate of 40 adjusting solenoid valve of control unit, with the accumulation of time, small flow rate
Error also will form biggish flow deviation.For example, concentration and quality proportioning based on component materials, control unit 40 can be counted
Calculate and determine the flow proportional and flow rate ratio of each component materials.When control unit 40 is based on the stream in limiting time section
When amount data determine that some component materials is on the high side, control unit 40 adjusts the flowing speed of solenoid valve corresponding with component materials
Rate, to correct the flow rate of solenoid valve.Flow deviation caused by the invention avoids the little deviation due to solenoid valve,
The composition proportion that ensure that sulfur elimination maintains the scale removal effect of sulfur elimination to best.
Preferably, intake pipeline is additionally provided with flowmeter.Flowmeter is by magnetoelectricity flow sensor and Flow Meter Based two
The magnetoelectric flowmeter largely formed.When fluid flows into flowmeter, fluid is periodical, inward turning, interlaced in internal generation
Vortex.When the field system that vortex is formed via permanent magnet and signal electrode, to the periodical cutting of magnetic line of force progress, and
It is constantly be generated the electromotive force of alternation on signal electrode, fluid is obtained by the alternative frequency that signal electrode detects electromotive force
Flow.The signal is converted into pulse digital signal after amplification, filtering, shaping and carries out calculation process by Flow Meter Based again,
And flow and volume total amount directly are shown in liquid crystal display.Instrument indication range: 0~99999999m of integrated flux3, instantaneous flow 0
~19999m3/ h, flux unit m3, chronomere h etc. is for user's selection.Flowmeter accuracy: magnetoelectricity flow sensor and flow
It is ± 0.5% that integrating instrument, which matches accuracy,；± 1.0%；± 1.5%.
Embodiment 2
The present embodiment is the further improvement to embodiment 1, and duplicate content repeats no more.
The quality proportioning and its cleanup additive effect of fracture acidizing cleanup additive is illustrated in the present embodiment.
According to a preferred embodiment, the additional surfactants are fluorocarbon surfactant, and the fluorocarbon surface is living
Property agent be anionic type fluorocarbon surfactant, cationic fluorocarbon surfactant, amphoteric ion fluorocarbon surfactant and
Non-ionic fluorocarbon surfactant is any one or more of.Cleanup additive of the invention can be to fluorocarbon surfactant and sun
The additives such as ion Gemini surface active agent are effectively merged and synergy, to make cleanup additive with lower surface
Power, lower interfacial tension and preferably prevent swollen ability, which is used for the pressure break and acidification to oilfield reservoir
In processing, clay swell can be effectively inhibited, reduces two resistances of hollow billet resistance and emulsion blocking generation, and then effectively
The row of returning that ground improves fracturing fluid leads, and alleviates the injury of fracturing fluid water caused by stratum, realizes to oil-gas Layer effectively
Protection, and improve the effect to oilfield reservoir frac treatment.
According to a preferred embodiment, individually or jointly additional surfactants can increase the silicone surfactant
Strong solubilization-aid effect of the terpene hydrocarbon as cosolvent.The preferred hydrocarbon-surfactant of additional surfactants.
According to a preferred embodiment, the additional surfactants are hc-surfactant, and the hydrocarbon surface is living
Property agent be alkyl glycosides, general molecular formula are as follows:
Wherein, R C6~C10Saturated alkyl, n is average degree of polymerization, n=1,2,3 ....
According to a preferred embodiment, cleanup additive further includes nonionic surface active agent.Preferably, non-ionic surface
Activating agent is alkyl phenol polyoxyethylene ether (OP-40).The nonionic surfactant has a uncharged hydrophilic group
Group's head key and a hydrophobic tail key.The nonionic surfactant has one of having structure or a variety of: carbon chain length
Degree is 8~20 carbon atoms, 3~40 oxirane monomers, up to 40 propylene oxide monomers, up to 2 glucose monomers.
The nonionic surfactant accounts for the 5%~70% of the cleanup additive weight.Preferably, nonionic surfactant accounts for
The 10%~70% of the cleanup additive weight.
According to a preferred embodiment, the cleanup additive includes silicone surfactant, additional surfactants, solvent
And water phase, the solvent are terpene hydrocarbons, a kind of hydrocarbon-surfactant of additional surfactants, quantity and ratio can shadows
Ring the Stable distritation of nanometer particle of the terpene solvent in water phase.The silicone surfactant and the additional surface are living
Property agent weight ratio be 1:4~4:1.
According to a preferred embodiment, it is 4~10 that the additional surfactant, which includes polyoxyethylene modal,
Ethoxylated fatty amines that alkyl polyoxyethylene ether, polyoxyethylene modal are 4~10, polyoxyethylene modal are 4
~10 castor oil polyoxyethylene ether and the combination of one or more of alkyl glycosides；The amphoteric surfactant includes alkane
The alkylamide that the carbon chain lengths of alkyl amine oxide, alkyl betaine and alkyl that the carbon chain lengths of base are 10~22 are 10~22
The combination of one or more of propyl amine oxide, alkylamide propyl-betaine.
According to a preferred embodiment, the additional surfactant includes aliphatic secondary amine and tertiary amines derived object.Wherein
Aliphatic group can be linear chain or branched chain group.Also, one of aliphatic substituent group includes 8-18 carbon atom, and another aliphatic series takes
Dai Ji includes a kind of anionic water solubilizing group such as carboxyl, sulfonate radical, sulfate radical, phosphate radical or phosphonate radical.
According to a preferred embodiment, the silicone surfactant is polyalkylene oxide block copolymer.
Example 1: cleanup additive is made of following raw material: heptamethyltrisiloxane 35%, monoterpene 10%, laruyl alcohol polyoxy
Vinethene is 15%, water 40%.
The performance of the promotion fracturing fluid recovery (backflow) of obtained nanoemulsions cleanup additive is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 18.8mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 62.7%.
Example 2: cleanup additive is made of following raw material: heptamethyltrisiloxane 40%, monoterpene 10%, laruyl alcohol polyoxy
Vinethene is 10%, water 40%.
The performance of the promotion fracturing fluid recovery (backflow) of obtained nanoemulsions cleanup additive is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 19.8mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 66%.
Example 3: cleanup additive is made of following raw material: polycyclic ether modified dimethyl polysiloxane is 40%, and terpenes methylol is
15%, ethoxylated fatty amines 15%, water 30%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example 1
This comparative example is water.40-60 mesh quartz sand is filled to long 35cm, in the fill out sand tube of diameter 2.5cm, vertical tremor
It is consistent each permeability substantially 300 times, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in weight
The lower outflow of power effect, outflow liquid measure is 7.8mL, and the row's of helping efficiency (the ratio between the water flowed out and the water of original injection) is
26%.
Comparative example 2
What the cleanup additive of this comparative example was made of following raw materials according: alkyl polyoxyethylene ether 20%, aliphatic alcohol polyethenoxy
Ether 3%, quaternary ammonium salt 2%, fatty alcohol 3% and methanol 4%.40-60 mesh quartz sand is filled to long 35cm, diameter 2.5cm's fills out
It in sandpipe, is consistent each permeability substantially vertical tremor 300 times, 30mL water is injected into fill out sand tube, open lower part
Valve flows out liquid under the effect of gravity, and outflow liquid measure is 14.6mL, the row's of helping efficiency (water and original injection flowed out
The ratio between water) be 48.7%
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 19.2mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 64%.
Example 4:
Cleanup additive is made of following raw material (silicone surfactant: additional surfactants=4:1): polyethers sealing end two
Methyl-silicone oil is 40%, limonene 15%, alcohol ethoxylate 10%, water 35%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that the present embodiment obtains is injected into fill out sand tube with cleanup additive 30mL,
Open lower part valve, flow out liquid under the effect of gravity, outflow liquid measure is 16.5mL, the row's of helping efficiency (water that flows out and
The ratio between the water of original injection) it is 55%.
Example 5:
Cleanup additive is made of following raw material (silicone surfactant: additional surfactants=3:1): polyethers sealing end two
Methyl-silicone oil is 30%, limonene 15%, alcohol ethoxylate 10%, water 45%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 18.9mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 63%.
Example 6: this example provides a kind of fracture acidizing cleanup additive, which is made of following raw material (siloxane surface work
Property agent: additional surfactants=2:1): polyethers block dimethicone be 20%, limonene 15%, alcohol ethoxy
Compound is 10%, water 55%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 20.1mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 67%.
Example 7: cleanup additive is made of following raw material (silicone surfactant: additional surfactants=1:1): polyethers envelope
Holding dimethicone is 10%, limonene 15%, alcohol ethoxylate 10%, water 65%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 21.6mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 71.9%.
Example 8: cleanup additive is made of following raw material: it is 5% that polyethers, which blocks dimethicone, limonene 15%, fatty alcohol
Ethoxylate is 10%, water 70%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 18.6mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 62%.
Example 9:
Cleanup additive is made of following raw material (silicone surfactant: additional surfactants=1:3): polyethers sealing end two
Methyl-silicone oil is 3%, limonene 15%, alcohol ethoxylate 10%, water 72%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that this example obtains is injected into fill out sand tube with cleanup additive 30mL, open
Lower part valve, flows out liquid under the effect of gravity, outflow liquid measure be 17.7mL, the row's of helping efficiency (water flowed out with it is original
The ratio between water of injection) it is 59%.
Example 10: cleanup additive is made of following raw material (silicone surfactant: additional surfactants=1:4): polyethers
Blocking dimethicone is 2.5%, limonene 15%, alcohol ethoxylate 10%, water 72.5%.
The performance of the promotion fracturing fluid recovery (backflow) of the obtained nanoemulsions cleanup additive of this example is tested:
Comparative example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, 30mL water is injected into fill out sand tube, open lower part valve, make liquid in gravity
Lower outflow, outflow liquid measure are 7.8mL, and the row's of helping efficiency (the ratio between the water of the water and original injection that flow out) is 26%.
Experimental example: being filled to long 35cm for 40-60 mesh quartz sand, in the fill out sand tube of diameter 2.5cm, vertical tremor 300 times
It is consistent each permeability substantially, the fracture acidizing that the present embodiment obtains is injected into fill out sand tube with cleanup additive 30mL,
Open lower part valve, flow out liquid under the effect of gravity, outflow liquid measure is 14.7mL, the row's of helping efficiency (water that flows out and
The ratio between the water of original injection) it is 49%.
Embodiment 3
The present embodiment is the further improvement to embodiment 1 and embodiment 2, and duplicate content repeats no more.
A kind of discharge aiding method of fracture acidizing cleanup additive, discharge aiding method are by each component of cleanup additive by least having
There is the mixing arrangement of input unit 10, injection unit 20 and control unit 40 to mix in the asynchronous mode of timesharing and injects oil/gas well
In.The asynchronous component that can make the row's of helping conflict each other of timesharing separates injection after the interval time for reducing effects of collisions enough, both
Effects of collisions is reduced, and avoids reducing the row's of helping effect.But traditional timesharing is asynchronous due to when interval time is too long or interval
Between to calculate error big and cause the row's of helping time too long, inefficiency and it is unwelcome.The present invention passes through the structure to injection unit
Improvement achieved the effect that timesharing is asynchronous, and shorten the timesharing asynchronous time, improve the row's of helping efficiency.Of the invention helps
Discharge method is applicable not only to cleanup additive, is also applied for the dispensing of other reagents.
Input unit 10 is passed through component based on the control information of control unit matched specified with its flow characteristics parameter
Intake pipeline is in a manner of being pressurized in timesharing input injection unit 20.Flow characteristics parameter of the invention includes at least the viscous of component
The parameters such as degree, density, severe, compressibility.The flow characteristics parameter and the diameter of intake pipeline, pressure of component interact, because
This flow characteristics parameter that component must be taken into consideration can be such that component injects in correct time, and the injection length for reducing component is missed
Difference.
Injection unit 20 includes the mixing duct for being provided with the first mixer 60, the second mixer 61 and third mixer 62
50 are arranged in the input hole on hole wall at least one.The structure of mixing arrangement be determine cleanup additive continuously largely addition and ingredient
Stable key device.In order to solve the technical issues of how making the addition of cleanup additive continuous-stable.First mixer is based on control
Input unit is provided at least one group of the intake pipeline input of solenoid valve by least one by the control information of unit processed
Divide and the first mixture is formed with the temperature mixing of restriction, the second mixer for being set to the first mixer outlet end is arch honeycomb
Shape dispersion plate and dispersion is delivered to third mixer along the channel that honeycomb is distributed by the first mixture, third mixer is by first
Mixture and at least one component are gathered in a manner of eddy flow is mixed to form cleanup additive.First in mixing arrangement of the invention is mixed
Clutch will mix component, and the second mixer disperses the first mixture, and the mode for first polymerizeing redisperse increases stream
The disturbance of body, so that various ingredients radially mix and reduce the resistance of fluid mixing.Third mixer by the first mixture and
Other components mix component homogeneous reaction and mixing so that in cleanup additive, effect stability again.
Injection unit carries out analysis life to the flow characteristics parameter of component and the component proportion of cleanup additive based on control unit
At the specified injection rate of the component injected with the control information of time correlation according to timesharing, specified injecting time and/or same
When inject the assigned rate ratio between at least two components will component inject oil/gas well in.By the way that the flow characteristics of component is joined
The structure matching of number and injection pipeline, not only avoids the problem of component blocks in intake pipeline, the input pipe of compatible materials
Line also reduces the loss of component, can also prevent the variation of component physics and chemical property, and the group of chemical property is avoided to arrange effect drop
It is low.For example, the big component of viscosity parameter is suitble to match the big intake pipeline of diameter parameters, be conducive to the discharge of component.If matching
The phenomenon that small intake pipeline of diameter parameters is then easy to appear component injection slowly, and injection length extends and blocks.Such as component
Viscosity it is smaller and need another component injection after reinject, then can match the longer intake pipeline of intake pipeline, make group
Divide to avoid in input process and be contacted with the long-time of air, while being delayed, input unit will not be made due to note
The interval time entered is too long and time of occurrence error.Injection rate, injecting time can all have an impact to the pressure in intake pipeline,
Suitable injection rate and time enables to the injection when the row's of helping effect is best of the component of cleanup additive, obtains the preferably row's of helping knot
Fruit.
The axial line and vertical direction of input hole have different angle.The control based on control unit is provided in input hole
The resistance valve of the injection rate of information processed adjustment component, spray angle and/or injecting time.Axis of the control unit based on input hole
The preset injection rate of the angle of heart line and vertical direction, resistance valve, spray angle, the length of intake pipeline, in intake pipeline
Stress appraisal component between injection track difference and/or intake pipeline input duration difference, and according to injection track
Difference and/or the input duration difference preset group of intake pipeline dispense into time interval so that timesharing injection component infusing
Injection track zero crossing during entering.For example, the effect of component can be influenced by the time.The different component of timesharing injection is at it
The best time injection that his component reacts with it, has better effect.Injection track zero crossing is in order to avoid having conflict
The component of effect generates bad ingredient before injection, also for avoid between different component injection when interfering with each other and
Lead to the problem of injection length inaccuracy.
Input hole includes at least defeated for the first input hole, the second input hole, third to the first mixer injection component
Enter between hole and at least one setting and the second mixer and third mixer and for injecting component to third input mixer
The 4th input hole.The horizontal position of second input hole is lower than the horizontal position of the first input hole and the horizontal position of third input hole
It sets between the first input hole and the horizontal position of the second input hole, so that three kinds of components of cleanup additive are in a manner of asynchronous
The first mixer is injected, the horizontal position of the 4th input hole is lower than the horizontal position of the second input hole.The high low setting of input hole
The time interval for being conducive to component injection is distinguished, so that even if component is inputted from input unit simultaneously, it also can be accurate
The timesharing time injects the first mixer, avoids the operation that input unit carries out timesharing, reduces the input journey of input unit
Sequence and error realize the effect of nature timesharing.
Wherein, the temperature control device 90 of the first mixer of the invention is heated to specified temperature based on the control unit preset time
Degree.Temperature has a significant effect for the reaction between component and component.Therefore, it heats up in different moments most important.
Temperature control device heated based on the mixture that the instruction of control unit generates different moments, then is made mixture and newly injected
Component reaction is conducive to the generation of different cleanup additives.I.e. the present invention is conducive to timesharing and injects different cleanup additives, makes different
Cleanup additive is complimentary to one another at the time of appropriate to promote the row's of helping effect.
4th input hole be based on the preset injecting time of control unit, jet velocity and spray angle by the 4th component with
The component of the first input hole, the second input hole and/or third the input hole injection of third mixer is delivered to by the second mixer
The asynchronous mode of mixture inject in third mixer.The component of 4th input hole be conducive to by heating and cooling down
Mixture is reacted, and the needs of a variety of cleanup additives are suitble to.4th input hole can flexibly input to be implanted according to the actual situation
Component.
The angle of first input hole, the axial line of the second input hole and third input hole and vertical direction has difference and angle
Degree is gradually reduced so that the injection track of component is non-cross.Alternatively, the axial line of the first input hole and the second input hole
Identical as the angle of vertical direction, the axial line of third input hole and the angle of vertical direction are defeated less than the first input hole and second
Enter the axial line in hole and the angle of vertical direction so that the third component of third input hole injection is injected in the first input hole
The first component and the second component of the second input hole input inject delay injection after the first mixer again simultaneously.The present invention utilizes
The difference of the included angle of the axial line and vertical direction of input hole realizes the natural timesharing of component injection, is conducive to cleanup additive
Each component realizes timesharing in the case where not reducing input efficiency, while not extending and helping the overall time for being drained through journey.The present invention
Discharge aiding method realize the asynchronous injection of timesharing in finite time, that is, obtain the preferably row's of helping effect, also improve the row's of helping efficiency.
Preferably, input unit 10 includes the supercharging device 70 and trigger device for the transport component in a manner of pressurization
80, trigger device 80 triggers warning information based on the pressure data of the pressure acquisition device feedback in mixing duct 50, and control is single
Pressurization parameter and/or solenoid valve parameter of the member 40 based on warning information adjustment supercharging device 70 are so as to adjust the pressure in polymerization duct
Power is to non-alert status.
Preferably, the first mixer 60 is tapered and inner wall is provided with and gradually becomes with its depth parameter of fluid flow direction
The lesser taper port of small helicitic texture and the first mixer 60 is opposite with the protrusion radian direction of the second mixer 61, makes
The each component obtained in the first mixer mixes in the case where flow resistance gradually becomes smaller and injects the second mixer 61.Second
Mixer 61 is provided at least one dispensing passage for being distributed and intersecting intercommunication in honeycomb, and the first mixture is by being distributed in
The entrance of dispensing passage on the arched surface of arch honeycomb dispersion plate repeats to converge and separation and from being distributed in arch honeycomb
The outlet of the dispensing passage at the both ends of shape dispersion plate is injected into third mixer 62.
Preferably, polymerization duct 50 is additionally provided with sealing spray disk 63.Sealing spray disk 63 is set to the cone of third mixer 62
To which the second mixture formed in third mixer 62 is injected in the oil gas coupled with injection unit 20 at shape small end mouth
In well.The injection speed of at least one nozzle 64 of control information adjustment sealing spray disk 63 of the sealing spray disk 63 based on control unit 40
Rate, so as to adjust the pressure in polymerization duct 50.
Discharge aiding method of the invention is used in combination with cleanup additive and mixing arrangement, and it is inaccessiable to reach traditional cleanup additive
The row's of helping effect and efficiency.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention
Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair
Within bright protection scope.It will be understood by those skilled in the art that description of the invention and attached drawing are illustrative and not structure
At limitations on claims.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (9)
1. a kind of discharge aiding method of fracture acidizing cleanup additive, which is characterized in that the discharge aiding method is by each of cleanup additive
Component is asynchronous with timesharing by the mixing arrangement at least with input unit (10), injection unit (20) and control unit (40)
Mode is mixed and is injected in oil/gas well,
The input unit (10) based on the control information of described control unit by the component by with its flow characteristics parameter
The timesharing in a manner of being pressurized of matched specified intake pipeline inputs in the injection unit (20),
The injection unit (20) includes being provided with the first mixer (60), the second mixer (61) and third mixer (62)
It mixes duct (50) and the input hole on hole wall is arranged at least one,
The injection unit distributes the flow characteristics parameter of the component and the group of the cleanup additive based on described control unit
Than carrying out the specified injection rate for the component of analysis generation injected with the control information of time correlation according to timesharing, specifying injection
Time injects the component in the oil/gas well, wherein
The axial line and vertical direction of the input hole have different angle, are provided in the input hole based on the control
The resistance valve of the control information adjustment injection rate of component of unit, spray angle and/or injecting time,
The preset injection speed of angle, the resistance valve of axial line and vertical direction of the described control unit based on the input hole
Rate, spray angle, the length of the intake pipeline, the injection track difference between component described in the Stress appraisal in intake pipeline
And/or the input duration difference of intake pipeline, and it is poor according to the input duration of the injection track difference and/or intake pipeline
The different time interval for presetting the component injection, so that injection track zero crossing of the component of timesharing injection in injection process.
2. discharge aiding method as described in claim 1, which is characterized in that the input hole is included at least for mixed to described first
Clutch injection the first input hole of component, the second input hole, third input hole and at least one be set to second mixer
The 4th input hole between the third mixer and for injecting the component to third input mixer,
The horizontal position of second input hole is lower than the horizontal position of first input hole and the water of the third input hole
Prosposition sets three kinds of groups for making the cleanup additive between first input hole and the horizontal position of second input hole
Divide and inject first mixer in a manner of asynchronous, the horizontal position of the 4th input hole is lower than second input hole
Horizontal position, wherein
The temperature control device (90) of first mixer is heated to assigned temperature based on the described control unit preset time,
4th input hole is based on the preset injecting time of described control unit, jet velocity and spray angle for the 4th component
With with first input hole, the second input hole and/or third that the third mixer is delivered to by second mixer
The asynchronous mode of mixture of the component of input hole injection is injected in the third mixer.
3. discharge aiding method as claimed in claim 2, which is characterized in that the first input hole, the second input hole and third input hole
Axial line and vertical direction angle there is difference and angle to be gradually reduced so that the injection track of the component mutually not
Intersect.
4. discharge aiding method as described in claim 1, which is characterized in that the input unit (10) includes for the side of pressurization
Formula conveys the supercharging device (70) and trigger device (80) of the component,
The pressure data triggering that the trigger device (80) is based on the pressure acquisition device feedback in mixing duct (50) is pre-
Alert information, described control unit (40) are based on the pressurization parameter and/or electricity that the warning information adjusts the supercharging device (70)
Magnet valve parameter is so as to adjust the pressure in the mixing duct to non-alert status.
5. discharge aiding method as claimed in claim 2, which is characterized in that first mixer (60) is tapered and inner wall is arranged
There is the lesser cone of the gradually smaller helicitic texture of its depth parameter of adjoint fluid flow direction and first mixer (60)
Shape port is opposite with the protrusion radian direction of second mixer (61), so that each component in the first mixer is flowing
Resistance mixes and injects second mixer (61) in the case where gradually becoming smaller,
Second mixer (61) is provided at least one dispensing passage for being distributed and intersecting intercommunication in honeycomb, and first is mixed
The entrance for closing the dispensing passage on arched surface of the object by being distributed in arch honeycomb dispersion plate is repeated to converge and be separated
And the outlet of the dispensing passage from the both ends for being distributed in the arch honeycomb dispersion plate is injected into the third mixer
(62)。
6. discharge aiding method as claimed in claim 5, which is characterized in that mixing duct (50) is additionally provided with sealing spray disk (63),
Sealing spray disk (63) is set at the taper small end mouth of the third mixer (62) thus by third mixer (62)
Second mixture of interior formation is injected in the oil/gas well coupled with the injection unit (20),
The control information that sealing spray disk (63) is based on described control unit (40) adjusts sealing spray disk (63) at least
The injection rate of one nozzle (64), so as to adjust the pressure of mixing duct (50).
7. discharge aiding method as described in claim 1, which is characterized in that the cleanup additive include at least surfactant, solvent,
Cosolvent and water, wherein
The surfactant is silicone surfactant, and the solvent is terpene hydrocarbon,
The cosolvent be alkylol with 1 to 4 carbon atoms, oligomeric-oxyalkylene with 1 to 3 ethylene oxide and
One of oligomeric-oxyalkylene with 1 to 3 propylene oxide is a variety of.
8. discharge aiding method as claimed in claim 7, which is characterized in that the cleanup additive further includes additional surfactants, institute
Silicone surfactant accounts for the cleanup additive weight 2%~60% is stated, the additional surfactants account for the cleanup additive
The 10%~35% of weight, the water account for the 15%~93% of the cleanup additive weight.
9. discharge aiding method as claimed in claim 8, which is characterized in that the silicone surfactant is that have following chemistry
The polymer of formula:
MDa(D'R1)bM,(M'R1)Da(M'R1),(M'R1)Da(M'R2),
(M'R1)Da(D'R1)b(M'R1),Tz(T'R1)c,(M'R1)
tMuQv,[(D'R1)Dk]；
Wherein, " R1" indicate the organic group having the following structure :-(CH2)n-(OCH2CH2)x-(OCH(CH3)CH2)y-OR3；
Wherein, " n " is the integer of 3-11, and " x " is the integer of 3-30, and " y " is the integer of 1-30, " R3" it is selected from-H ,-Me and-OC
(O)CH3；Wherein, " M " indicates Me3Si01/2, " D " expression-Me2SiO-, " T " expression-MeSi03/2, " Q " expression-Si02,
" M' " indicates Me2(R)Si01/2, " D' " expression-Me (R) SiO-, " T' " expression-RSi03/2, " Me " expression-CH3, " R " table
Show H, wherein " a " is the integer of 1-200.
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| CN109233788B (en) * | 2018-10-31 | 2021-09-10 | 重庆地质矿产研究院 | Nano-emulsion cleanup additive for unconventional gas reservoir fracturing and preparation method thereof |
| CN110094190B (en) * | 2019-04-18 | 2022-04-26 | 中国石油大学(华东) | Skid-mounted jelly dispersion software wellhead injection device and injection method and application of heterogeneous composite flooding system |
| CN110343516A (en) * | 2019-07-23 | 2019-10-18 | 四川宝麟新材料科技有限公司 | A kind of shale gas is dedicated to prevent swollen cleanup additive and preparation method thereof |
| CN111574991B (en) * | 2020-05-20 | 2022-04-29 | 中国石油集团渤海钻探工程有限公司 | Efficient cleanup additive for continental facies shale and preparation method thereof |
| CN116218507B (en) * | 2023-05-08 | 2023-08-15 | 东营江源化工有限公司 | Demulsification and drainage-assisting composite additive for fracturing and acidizing and preparation method thereof |
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