CN102558469B - Cross-linking agent for profile control and oil displacement for high-temperature oil reservoir, as well as preparation method and application for same - Google Patents
Cross-linking agent for profile control and oil displacement for high-temperature oil reservoir, as well as preparation method and application for same Download PDFInfo
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Abstract
The invention discloses a cross-linking agent (i.e., polyhydroxy phenolic high-temperature prepolymer organic cross-linking agent) for deep profile control and oil displacement for a high-temperature oil reservoir, wherein the cross-linking agent disclosed by the invention is formed by using phenol, hexamethylenetetramine, formaldehyde and a curing agent as raw materials, and performing polymerization reaction under the action of a catalyst. The cross-linking agent is mainly researched and developed aiming at a high-temperature oil reservoir (at 70-125 DEG C), and is mainly used for the technologies of deep profile control and deep fluid diversion. In a high-temperature condition, the cross-linking agent is high in the activity of reaction with polyacrylamide, low in use concentration, non-toxic and odourless, harmless for environment and workers, and easy in operation. The cross-linking agent is used in deep profile control and oil displacement construction, and is widely applied in Turpan-Hami oilfield and Jilin oilfield, and the input-output ratio achieves 1: 3.6. Via continuing research in the aspects of improving understanding for oil reservoir, optimizing the working procedures of construction and pump injection program, and controlling injection radius, the cross-linking agent can be widely applied in the aspect of high-temperature oil reservoir.
Description
Technical field
The present invention relates to a kind of Oilfield Chemicals and its preparation method and application, particularly a kind of high temperature modification linking agent and its preparation method and application, belongs to oilfield exploitation field.
Background technology
In recent years, the deep transfer drive technical development that is applied to middle low-temperature reservoir (70 ℃ following) obtains very fast, and is widely applied in oil field.But the dark conditioning technology development that is applied to high-temperature oil reservoir (more than 70 ℃) is relatively slow, this be mainly due to high temperature polymer and high-temperature cross-linking agent production development slower, therefore restricted the development of the deep transfer drive technology of high-temperature oil reservoir (more than 70 ℃).At present, larger phenolic crosslinkers and the lower surrogate of some toxicity of the toxicity fifties still used in many oil fields.Although phenolic system can be used for high-temperature oil reservoir environment, but because chemical agent volatility is serious, environment and operator are had a strong impact on, and response capacity is low, using dosage is large, national environmental protection department clearly forbids using phenolic aldehyde material in injected water, therefore, need a kind of substitute products of non-toxic inexpensive, can form the requirement that good thermal stability, visco-elasticity meet necessarily required gelinite and meet high-temperature oil reservoir profile control transfer drive with multipolymer.
The most of oil field of China adopts waterflooding pattern, along with oil-field development exploitation enters middle high water-cut stage, improves injectability, improves development effectiveness and be one of urgent task that these oil fields face.Because chemical profile control transfer drive technological adaptability is wide, flexible operation, with low cost, be the prefered method that current oilfield stimulation is taped the latent power.Oil reservoir deep profile controlling transfer drive technology is effective one of the water driving technology that improves growing up on conventional profile control and extensive polymer flooding basis, it can effectively adjust oil reservoir intake profile and plane wave and efficiency, success ratio is high, is the developing direction of improving in recent years water driving technology.Oil deposit deep part transfer drive technology is different from polymer flooding and profile control technique to the requirement of chemical agent, requires the cross-linking system using should have certain gel-formation power, also will have certain flow capacity, and have good adaptability under differing temps and salinity condition.For telling the temperature regime of the most of oil reservoir temperature in oil field, Kazakhstan in 70-90 ℃, must there is the gelinite of this oil reservoir system of adaptation to reach the linking agent of dark tune, volume increase object.
Summary of the invention
The object of the invention is the problem existing for above prior art, a kind of high-temperature oil reservoir deep transfer drive linking agent its preparation method and the application in high-temperature oil reservoir chemical displacement of reservoir oil exploitation thereof are provided, linking agent of the present invention is polyhydroxy phenol high temperature gel linking agent, toxicity is low, have no irritating odor, construction safety.
For realizing object of the present invention, one aspect of the present invention provides a kind of high-temperature oil reservoir deep transfer drive linking agent, it is characterized in that, take phenol, vulkacit H, formaldehyde, solidifying agent as raw material, under the effect of catalyzer, by polyreaction, forming.
Wherein, described solidifying agent is one or more in diethylenetriamine, triethylene tetramine, vinyl triamine or ammonium chloride, is preferably ammonium chloride; Described catalyzer is sodium hydroxide or potassium hydroxide, is preferably sodium hydroxide.
Wherein, the weight part proportioning of described raw material and catalyzer is: phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5, be preferably: phenol 2.5-3.5, vulkacit H 1.5-2.5, formaldehyde 1.5-2.5, solidifying agent 1.5-2.5, catalyzer 0.75-1.25, more preferably phenol 3, vulkacit H 2, formaldehyde 2, solidifying agent 2, catalyzer 1.
Particularly, described formaldehyde is that mass percent concentration is 37% industrial formaldehyde solution.
The present invention provides the preparation method of a kind of high-temperature oil reservoir deep transfer drive linking agent on the other hand, comprises as follows step in sequence:
1) according to following weight part proportioning, prepare raw material, comprise
Phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5;
2) described raw material is added to reactor, after mixing, be heated to 60-100 ℃, maintenance temperature is 60-100 ℃, carries out polyreaction, obtains.
Wherein, step 1) described in the weight part proportioning of raw material be: phenol 2.5-3.5, vulkacit H 1.5-2.5, formaldehyde 1.5-2.5, solidifying agent 1.5-2.5, catalyzer 0.75-1.25, be preferably phenol 3, vulkacit H 2, formaldehyde 2, solidifying agent 2, catalyzer 1.
Wherein, step 2) described in temperature of reaction be preferably 80-90 ℃; The reaction times of described polyreaction is 2-3h, is preferably 2.5h.
Another aspect of the invention provides the application of a kind of above-mentioned high-temperature oil reservoir deep transfer drive linking agent in high-temperature oil reservoir chemical profile control, transfer drive.
High-temperature oil reservoir of the present invention deep transfer drive linking agent tool has the following advantages:
1, high-temperature oil reservoir linking agent irritating smell of the present invention is low,, toxicity is low, especially uses nontoxic ammonium chloride as the prepared linking agent of solidifying agent, its toxicity is lower;
2, the compound displacement agent that high-temperature oil reservoir of the present invention deep transfer drive linking agent and polymer poly acrylamide are mixed with can be applicable to deep chemistry transfer drive, the profile control processing of high-temperature oil reservoir, and being applicable to temperature is 70 ℃ of above high-temperature oil reservoir;
3, the adjusting driving agnet oil displacement efficiency that high-temperature oil reservoir of the present invention deep transfer drive linking agent is mixed with in superpolymer is remarkable, and effect of field application is relatively good, has improved the recovery ratio in oil field.
4, high-temperature oil reservoir of the present invention deep transfer drive linking agent preparation method is simple, easy to operate, and sufficient raw is cheap, is suitable for applying;
5, high-temperature oil reservoir of the present invention deep transfer drive linking agent is in oilfield chemistry transfer drive, profile control site operation process, and application is convenient, and construction is simple.
Accompanying drawing explanation
Fig. 1 is the chemical structural formula of main component in the compound displacement agent of high-temperature oil reservoir of the present invention deep.
Embodiment
Industrial goods polyhydroxy phenol linking agent of the present invention is take phenol, vulkacit H, formaldehyde, catalyzer, solidifying agent as raw material, in reactor, be heated to certain temperature, under the effect of catalyzer, carry out polyreaction, the High Temperature Pre aggressiveness mixture (as containing monohydroxy phenol, dihydric phenol performed polymer) that generation contains hydroxyl phenol, be High Temperature Pre aggressiveness organic crosslinking agent mixture, that is to say and obtain High Temperature Pre aggressiveness linking agent.
The High Temperature Pre aggressiveness linking agent of preparation has no irritating odor, toxicity significantly reduces, and with the adjusting driving agnet of the compound rear generation of polyacrylamide for high-temperature oil reservoir deep transfer drive, site operation, is used safety.
Raw material formaldehyde in the embodiment of the present invention is that mass percent concentration is 37% industrial formaldehyde solution; Solidifying agent adopts ammonium chloride, and other are also applicable to the present invention as diethylenetriamine, triethylene tetramine, vinyl triamine; Catalyzer adopts sodium hydroxide, and other are also applicable to the present invention as potassium hydroxide.
Embodiment 1
One, synthesizing high temperature oil deposit deep part transfer drive linking agent
1, according to following weight proportion, prepare raw material (× 10kg)
Phenol 3, vulkacit H 2, formaldehyde 2, solidifying agent 2, catalyzer 1
2, above-mentioned raw materials is joined in reactor together, mix, heat and make temperature remain 85 ± 5 ℃, at this temperature, carry out polyreaction.
3, after reaction 2.5h, reaction mixture is cooled to normal temperature (25 ℃), obtain performed polymer linking agent (being high-temperature oil reservoir deep transfer drive poly-hydroxy phenols linking agent).
Two, preparation high-temperature oil reservoir deep adjusting driving agnet
1, clear water is mixed with polyacrylamide, be mixed with the polyacrylamide solution that concentration is 1000mg/L, it is the polyacrylamide that adds 1000mg in every 1L clear water, that is to say, the weight that contains polyacrylamide in every 1L clear water is 1000mg, wherein, the molecular weight of polyacrylamide is 1,200 ten thousand;
2, to high-temperature oil reservoir deep transfer drive with adding clear water in poly-hydroxy phenols linking agent, mix, be mixed with the cross-linking agent solution that concentration is 600mg/L, be the performed polymer linking agent that adds the step () of 600mg to prepare in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 600mg;
3, polyacrylamide solution is mixed and be get final product with cross-linking agent solution, wherein, in the polyacrylamide in polyacrylamide solution and cross-linking agent solution, the weight proportion of linking agent is 2: 1.
High Temperature Pre aggressiveness linking agent prepared by the present invention and polyacrylamide effect, at a certain temperature, the plural gel body (as Fig. 1) that formation polyacrylamide-resol is main component, resol, the methylene base polyacrylamine gel of generating portion simultaneously, obtain the agent of polyhydroxy phenol high temperature compound displacement, i.e. high-temperature oil reservoir deep compound displacement agent.
Embodiment 2
One, synthesizing high temperature oil deposit deep part transfer drive linking agent
1, according to following weight proportion, prepare raw material (× 10kg)
Phenol 2.5, vulkacit H 2.5, formaldehyde 1.5, solidifying agent 1.5, catalyzer 1.75
2, above-mentioned raw materials is joined in reactor together, mix, heat and make temperature remain 95 ± 5 ℃, at this temperature, carry out polyreaction.
3, reaction 2h, cools reaction mixture to normal temperature (25 ℃), obtains.
Two, preparation high-temperature oil reservoir deep adjusting driving agnet
1, clear water is mixed with polyacrylamide, be mixed with the polyacrylamide solution that concentration is 800mg/L, it is the polyacrylamide that adds 800mg in every 1L clear water, that is to say, the weight that contains polyacrylamide in every 1L clear water is 800mg, wherein, the molecular weight of polyacrylamide is 1,700 ten thousand;
2, to high-temperature oil reservoir deep transfer drive with adding clear water in poly-hydroxy phenols linking agent, mix, be mixed with the cross-linking agent solution that concentration is 700mg/L, be the performed polymer linking agent that adds the step () of 700mg to prepare in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 700mg;
3, polyacrylamide solution is mixed and be get final product with cross-linking agent solution, wherein, in the polyacrylamide in polyacrylamide solution and cross-linking agent solution, the weight proportion of linking agent is 4: 1.
Embodiment 3
One, synthesizing high temperature oil deposit deep part transfer drive linking agent
1, according to following weight proportion, prepare raw material (× 10kg)
Phenol 3.5, vulkacit H 1.5, formaldehyde 2.5, solidifying agent 2.5, catalyzer 1.25
2, above-mentioned raw materials is joined in reactor together, mix, heat and make temperature remain 80 ± 5 ℃, at this temperature, carry out polyreaction.
3, after reaction 3h, reaction mixture is cooled to normal temperature (25 ℃), obtain.
Two, preparation high-temperature oil reservoir deep adjusting driving agnet
1, clear water is mixed with polyacrylamide, be mixed with the polyacrylamide solution that concentration is 1200mg/L, it is the polyacrylamide that adds 1200mg in every 1L clear water, that is to say, the weight that contains polyacrylamide in every 1L clear water is 1200mg, wherein, the molecular weight of polyacrylamide is 1,500 ten thousand;
2, to high-temperature oil reservoir deep transfer drive with adding clear water in poly-hydroxy phenols linking agent, mix, be mixed with the cross-linking agent solution that concentration is 500mg/L, be the performed polymer linking agent that adds the step () of 500mg to prepare in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 500mg;
3, polyacrylamide solution is mixed and be get final product with cross-linking agent solution, wherein, in the polyacrylamide in polyacrylamide solution and cross-linking agent solution, the weight proportion of linking agent is 2: 1.
Embodiment 4
One, synthesizing high temperature oil deposit deep part transfer drive linking agent
1, according to following weight proportion, prepare raw material (× 10kg)
Phenol 2, vulkacit H 1, formaldehyde 3, solidifying agent 1, catalyzer 0.5
2, above-mentioned raw materials is joined in reactor together, mix, heat and make temperature remain 90 ± 5 ℃, at this temperature, carry out polyreaction.
3, after reaction 2.5h, reaction mixture is cooled to normal temperature (25 ℃), obtain.
Two, preparation high-temperature oil reservoir deep adjusting driving agnet
1, clear water is mixed with polyacrylamide, be mixed with the polyacrylamide solution that concentration is 400mg/L, it is the polyacrylamide that adds 400mg in every 1L clear water, that is to say, the weight that contains polyacrylamide in every 1L clear water is 400mg, wherein, the molecular weight of polyacrylamide is 1,200 ten thousand;
2, to high-temperature oil reservoir deep transfer drive with adding clear water in poly-hydroxy phenols linking agent, mix, be mixed with the cross-linking agent solution that concentration is 1000mg/L, be the performed polymer linking agent that adds the step () of 1000mg to prepare in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 1000mg;
3, polyacrylamide solution is mixed and be get final product with cross-linking agent solution, wherein, in the polyacrylamide in polyacrylamide solution and cross-linking agent solution, the weight proportion of linking agent is 6: 1.
Embodiment 5
One, synthesizing high temperature oil deposit deep part transfer drive linking agent
1, according to following weight proportion, prepare raw material (× 10kg)
Phenol 4, vulkacit H 3, formaldehyde 1, solidifying agent 3, catalyzer 1.5
2, above-mentioned raw materials is joined in reactor together, mix, heat and make temperature remain 65 ± 5 ℃, at this temperature, carry out polyreaction.
3, after reaction 3h, reaction mixture is cooled to normal temperature (25 ℃), obtain.
Two, preparation high-temperature oil reservoir deep adjusting driving agnet
1, clear water is mixed with polyacrylamide, be mixed with the polyacrylamide solution that concentration is 1500mg/L, it is the polyacrylamide that adds 1500mg in every 1L clear water, that is to say, the weight that contains polyacrylamide in every 1L clear water is 1500mg, wherein, the molecular weight of polyacrylamide is 1,200 ten thousand;
2, to high-temperature oil reservoir deep transfer drive with adding clear water in poly-hydroxy phenols linking agent, mix, be mixed with the cross-linking agent solution that concentration is 200mg/L, be the performed polymer linking agent that adds the step () of 200mg to prepare in every 1L clear water, the weight that is to say performed polymer linking agent in every 1L clear water is 200mg;
3, polyacrylamide solution is mixed and be get final product with cross-linking agent solution, wherein, in the polyacrylamide in polyacrylamide solution and cross-linking agent solution, the weight proportion of linking agent is 1: 1.
1 one-tenth colloidality viscosity test of test example
It is in 80 ℃ of baking ovens that adjusting driving agnet prepared by embodiment 1-5 is put in respectively temperature, its viscosity number of different time sampling and measuring, to investigate adjusting driving agnet gel-forming property in different time, wherein adopt Brookfield viscometer under 6rpm condition, to measure the viscosity of adjusting driving agnet, measurement result is as shown in table 1.
Table 1 adjusting driving agnet gel-forming property viscosity changes
Experimental result shows:
1, after the present invention mixes with polymer poly acrylamide for the linking agent of high-temperature oil reservoir deep transfer drive, form gel, can be used for transfer drive, the profile control processing of high-temperature oil reservoir, can serve as high-temperature oil reservoir deep adjusting driving agnet and amendment and use;
2, the present invention is a kind of movable gel (being colloidal dispersed gel) for the linking agent of high-temperature oil reservoir deep transfer drive and the cohesion that polyacrylamide mixes, can realize the dynamic plugging to down-hole High Permeability Interval, displacement oil recovery factor is high, has changed the short defect of conventional adjusting driving agnet validity period.
3, the cohesion viscosity that the present invention forms for linking agent and the polyacrylamide of high-temperature oil reservoir deep transfer drive is high, and gelation time is adjustable, can be for the high seepage channel in shutoff water filling stratum after plastic 2-5 days, play the object of steady oil control water; After plastic, viscosity increases gradually, and gelation time is long, prevents compound displacement agent block pumps and pipeline, has extended the validity period of compound displacement agent simultaneously.
4, the cohesion that the present invention forms for linking agent and the polyacrylamide of high-temperature oil reservoir deep transfer drive does not need to control the pH of solution while preparing, during preparation, ground viscosity is lower than 100mPa.S, the compound displacement agent at preparation initial stage has higher mobility, easily flow, easily, under Injection Well, be suitable on a large scale, inject for a long time.
5, the present invention is low for the linking agent of high-temperature oil reservoir deep transfer drive and the proportioning of polyacrylamide, and polymkeric substance is low with the ratio of linking agent solid content, can significantly reduce the use of chemical reagent, has reduced production cost.
6, high-temperature oil reservoir of the present invention deep compound displacement agent displacement viscosity is high, and environmental resistance is good, can effectively stop up macropore and string layer.
7, when poly-double ratio is excessive, as gathered double ratio 6: 1 in embodiment 4, after profile control system plastic, reduced viscosity amplitude is larger, illustrates that when gathering double ratio be more greatly that gelling system exists signs of degradation, while therefore constructing at the scene, should control poly-double ratio example.
The two-tube non-homogeneous model test of test example 2 (being the adjusting driving agnet system thing mould research of high-temperature oil reservoir deep)
Simulation Lu Keqin oil field, Xinjiang permeability variation situation, adopts parallel two-tube (diameter is that 5cm, length are 87.21cm) heterogeneous body sand-packed model to carry out oil displacement test, to investigate high-temperature oil reservoir deep compound displacement agent oil displacement efficiency under static conditions.The rate of permeation of high permeability model is 550-600 × 10
-3μ m
2; The rate of permeation of low permeability model is 40-50 × 10
-3μ m
2, permeability grade is 11-15 times.
The high-temperature oil reservoir deep compound displacement agent of preparing using embodiment 1-5 respectively and the polymer poly acrylamide soln of reference examples 1-5 carry out oil displacement test as the adjusting driving agnet of the polymer flooding of two-tube non-homogeneous model test.
Testing sequence is as follows:
1) single tube is tested to rate of permeation with clear water respectively;
2) single tube is vacuumized respectively to the rear saturated Shandong gram crude oil that oozes, wherein, the density of ground crude oil is 0.8878g/cm
3, viscosity is 255.4mPa.s;
3) after two-tube parallel connection, carry out water drive crude oil, water drive reaches 98% to moisture simultaneously, and water drive oil recovery factor is as table 2;
4) then carry out compound displacement agent displacement of reservoir oil test simultaneously, wherein, 0.2 times (0.2pv) that the amount of the compound displacement agent of injection is volume of voids, the recovery ratio after compound displacement is as shown in table 2.
The measurement result of two-tube non-homogeneous model test is as shown in table 2.
The movable gel of the two-tube parallel model of table 2 drives effect (experimental temperature 75 ' C)
The pore volume injected of PV---core
Experimental result shows:
1, the high-temperature oil reservoir deep compound displacement agent displacement crude oil effectively that adopts polyhydroxy phenol type high temp performed polymer organic crosslinking agent of the present invention and polyacrylamide to prepare, displacement is respond well, improved recovery ratio, average recovery ratio has improved more than 8.5%, reaches 8.5-17.6%.
The startup ability of the irreducible oil of the low-permeability layer of the high-temperature oil reservoir deep compound displacement agent that 2, prepared by the present invention to non-homogeneous pay is strong compared with the startup ability of polymer flooding, improved profit mobility ratio, the recovery ratio that has improved low permeability layer, recovery ratio has improved 11.3-18.9%.
3, the flow that rear high and low infiltration layer is driven in the high-temperature oil reservoir deep compound displacement agent that prepared by the present invention has obvious variation, and low-permeability layer flow has raising by a relatively large margin, makes the reserves of low permeability layer obtain obvious startup.
Test example 3 oil field transfer drive researchs
The compound displacement agent that adopts high-temperature oil reservoir of the present invention deep transfer drive linking agent and polymkeric substance to prepare is mainly used in water injection well chemical profile control (driving) in high-temperature oil reservoir, reduce high water-intake interval water regain, improve water injection pressure, make middle low permeability layer water suction, improve in profile-log of water injection or plane and stop up high seepage channel, improve injected water swept volume, improve water drive situation, and then improve individual well or well group output, reduce moisture.
One, rig-site utilization
1, select well
Actual according to geology and production, select jade east 201-X, beautiful eastern 204-19, jade east 203, the beautiful eastern 2-42 well in Ke Qin oil field, Shandong to carry out Oil Field transfer drive profile control test in 2009-2010 year, wherein, the reservoir temperature of oil well is 70 ℃～125 ℃; Reservoir Permeability is 20～3000 × 10-3um
2; Water source is oil field clear water or sewage, the moisture 70-90% of four-hole well.
2, construction
The clear and definite decreasing water cut and increasing oil objects of factor such as, water breakthrough direction moisture according to tracer agent, well group;
According to factor deterministics such as waterflood front, water-flushed zone scope, well spacing, section development degrees, adjust radius, the compound displacement agent consumption simultaneously injecting with reference to effective water sucting thickness, adjusting driving agnet character calculative determination, wherein, be chosen in jade east 201-X, the beautiful eastern 204-19 in the same area, beautiful east 203, beautiful eastern 2-42 well, its compound displacement agent consumption is respectively 4160m
3, 5970m
3, 7500m
3, 3000m
3.
The injection that anyization adjusted all should be below formation-parting pressure, considers that interlayer trigger pressure difference determines the injection pressure gradient of zone of interest simultaneously, and then extrapolates injection pressure.Injection pressure gradient, liquid column hydrostatic pressure, zone of interest trigger pressure and water injectivity index are calculated the operation pressure of setting under discharge capacity.
In test example of the present invention, according to the reservoir situation of the eastern 201-X of jade, beautiful eastern 204-19, beautiful east 203, beautiful eastern 2-42 well group, determine that it is 74-160m that individual well injects intensity
3/ m, average individual well injects intensity 122m
3/ m, controls injection speed near the injection speed of each individual well injection allocation, and control of injection pressure is below waterflood system pressure, and operating tool string is blank tubing list note zone of interest, adopts the design of injection slug to carry out transfer drive construction, and slug design is as shown in table 3:
The design of table 3 slug is as follows
Specific as follows:
1) frontal slug: inject low viscous polyacrylamide solution (i.e. the polyacrylamide of low base fluid viscosity) to down-hole, injection radius is 2-4m, and Main Function is to push local water open, plays buffer action, the validity of protection main body slug;
2) main body slug: according to initial injection pressure, the order raising gradually according to viscosity is injected low viscosity, medium viscosity, the compound adjusting driving agnet of high viscosity, indepth plugging water breakthrough direction successively to down-hole.Beautiful eastern 201-X, beautiful eastern 204-19, beautiful east 203, beautiful eastern 2-42 well main body slug stage adjusting driving agnet behaviour in service are as table 4:
Table 4 Huas is adjusted well main body slug construction table
3) trailing edge slug: inject the compound adjusting driving agnet of high viscosity to down-hole, protection shutoff slug is not washed open by follow-up filling liquid, integrity and the resistance to erosion ability of protection main body block section;
4) replace slug: to down-hole, inject displacing liquid, replace the compound adjusting driving agnet of high viscosity that trailing edge slug step is injected, cross the area replacing to apart from well radius >=3m, displacing liquid is the polyacrylamide solution of high base fluid viscosity, i.e. full-bodied polyacrylamide solution.
3, construction effect (well group effect)
The compound displacement agent that polyhydroxy phenol type high temp performed polymer organic crosslinking agent prepared by employing the present invention and polymer poly acrylamide soln are mixed with is applicable to Ke Qin oil field, Shandong transfer drive, profile control, the change of composite slug adjusts mode effect better, oil and water well end is efficient is 100%, changes and adjusts well injection side Construction Condition as shown in table 5; After construction, oil well effect is as shown in table 6.
Table 5 Huas is adjusted well injection side Construction Gereral Situation table
PI value---pressure drop index, the reaction degree that wellhead pressure declines within the shut-in time, the while also represents the landing degree of reservoir pressure, the necessity that judges individual well profile control, numerical value is less, illustrates that current reservoir pressure declines severe, it is strong that water filling breaks through degree, and therefore the necessity of profile control is just larger.
The table 6 oil well effect summary sheet that takes effect
Economic and Efficiency Analysis
The 4 mouthfuls of wells of constructing, change adjustment expense and construction cost, 3,780,000 yuan of Meteorologicals; Increase oily 2830t, fall liquid 2800m
3, 1,358 ten thousand yuan of output expenses, input-output ratio 1: 3.6.
Claims (7)
1. a high-temperature oil reservoir transfer drive linking agent, it is characterized in that take phenol, vulkacit H, formaldehyde, solidifying agent as raw material, under the effect of catalyzer, by polyreaction, form, wherein, the weight part proportioning of described raw material and catalyzer is: phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5; Described solidifying agent is one or more in diethylenetriamine, triethylene tetramine, vinyl triamine or ammonium chloride; Described catalyzer is sodium hydroxide or potassium hydroxide.
2. linking agent as claimed in claim 1, is characterized in that the weight part proportioning of described raw material and catalyzer is: phenol 2.5-3.5, vulkacit H 1.5-2.5, formaldehyde 1.5-2.5, solidifying agent 1.5-2.5, catalyzer 0.75-1.25.
3. a preparation method for linking agent for high-temperature oil reservoir transfer drive, is characterized in that comprising as follows step in sequence:
1) according to following weight part proportioning, prepare raw material, comprise
Phenol 2-4, vulkacit H 1-3, formaldehyde 1-3, solidifying agent 1-3, catalyzer 0.5-1.5
Wherein said solidifying agent is one or more in diethylenetriamine, triethylene tetramine, vinyl triamine or ammonium chloride; Described catalyzer is sodium hydroxide or potassium hydroxide;
2) described raw material is added to reactor, after mixing, polyreaction is carried out in heating at 60-100 ℃ of temperature, obtains.
4. preparation method as claimed in claim 3, is characterized in that the weight part proportioning of raw material described in step 1) is: phenol 2.5-3.5, vulkacit H 1.5-2.5, formaldehyde 1.5-2.5, solidifying agent 1.5-2.5, catalyzer 0.75-1.25.
5. the preparation method as described in claim 3 or 4, is characterized in that step 2) described in temperature of reaction be 80-90 ℃.
6. the preparation method as described in claim 3 or 4, is characterized in that step 2) described in reaction times of polyreaction be 2-3h.
. a kind of transfer drive of high-temperature oil reservoir is as claimed in claim 1 or 2 the application in high-temperature oil reservoir chemical displacement of reservoir oil exploitation with linking agent.
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| CN201110334720.8A CN102558469B (en) | 2010-10-29 | 2011-10-28 | Cross-linking agent for profile control and oil displacement for high-temperature oil reservoir, as well as preparation method and application for same |
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| CN201110334720.8A Expired - Fee Related CN102558469B (en) | 2010-10-29 | 2011-10-28 | Cross-linking agent for profile control and oil displacement for high-temperature oil reservoir, as well as preparation method and application for same |
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| CN103214639A (en) * | 2013-04-24 | 2013-07-24 | 新疆华油技术服务股份有限公司 | Production method of water-soluble phenolic resin cross-linking agent used for water shut-off and profile control of oil field |
| CN105440233B (en) * | 2015-12-10 | 2017-09-01 | 中国石油天然气股份有限公司 | Fireflooding channeling sealing agent and preparation method thereof |
| CN106047324B (en) * | 2016-06-30 | 2018-12-21 | 中国石油大学(华东) | Reinforcing frozen glue dispersion in-depth profile control suitable for hyposmosis high temperature and high salt oil deposit |
| CN107384343B (en) * | 2017-06-27 | 2020-07-21 | 任丘市宏华兴化工有限公司 | High-temperature-resistant oil reservoir profile control water shutoff agent |
| CN110819334B (en) * | 2018-10-31 | 2021-08-20 | 中国石油大学(华东) | Skid-mounted jelly dispersion production device and its application |
| CN111205422B (en) * | 2018-11-22 | 2022-12-02 | 中国石油天然气股份有限公司 | Oily sludge plugging gel and preparation method and application thereof |
| CN113046043B (en) * | 2019-12-27 | 2022-11-04 | 中国石油天然气股份有限公司 | Oil reservoir reinjection water liquid preparation profile control and flooding agent, preparation method and application thereof |
| CN115261005A (en) * | 2021-04-30 | 2022-11-01 | 中国石油天然气股份有限公司 | Modifying and flooding agent and preparation method thereof |
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| CN101033392B (en) * | 2007-03-30 | 2011-01-12 | 盘锦市庆联油田工程技术服务有限公司 | Expansion type flow gel profile controlling water shutoff agent |
| CN101735421B (en) * | 2009-12-03 | 2012-12-12 | 中国石油大学(华东) | Method for preparing phenolic resin pre-condensation polymer cross-linking agent |
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| CN102060966A (en) | 2011-05-18 |
| CN102533240A (en) | 2012-07-04 |
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