CN110218554A - A kind of oil/gas well pressure difference activation envelope alters agent - Google Patents
A kind of oil/gas well pressure difference activation envelope alters agent Download PDFInfo
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- CN110218554A CN110218554A CN201910540157.6A CN201910540157A CN110218554A CN 110218554 A CN110218554 A CN 110218554A CN 201910540157 A CN201910540157 A CN 201910540157A CN 110218554 A CN110218554 A CN 110218554A
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- gas well
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- 230000004913 activation Effects 0.000 title claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- 239000012190 activator Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012153 distilled water Substances 0.000 claims abstract description 5
- 239000000839 emulsion Substances 0.000 claims abstract description 5
- 239000000178 monomer Substances 0.000 claims abstract description 5
- 239000003381 stabilizer Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 13
- 229920000459 Nitrile rubber Polymers 0.000 claims description 7
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims description 7
- 239000006071 cream Substances 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 7
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003995 emulsifying agent Substances 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- 229940123973 Oxygen scavenger Drugs 0.000 claims description 3
- SPTHWAJJMLCAQF-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene;hydrogen peroxide Chemical compound OO.CC(C)C1=CC=CC=C1C(C)C SPTHWAJJMLCAQF-UHFFFAOYSA-N 0.000 claims description 2
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 claims description 2
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000008234 soft water Substances 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- XUIVKWAWICCWIQ-UHFFFAOYSA-M sodium;formaldehyde;hydrogen sulfite Chemical group [Na+].O=C.OS([O-])=O XUIVKWAWICCWIQ-UHFFFAOYSA-M 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 12
- 239000003431 cross linking reagent Substances 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 8
- 239000004568 cement Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000003483 aging Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000003019 stabilising effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000693 micelle Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical group [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/44—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of oil/gas well pressure difference activation envelopes to alter agent, comprises the following components in parts by weight: comprising the following components in parts by weight: 100 parts of polymer emulsion, 2.5 parts of activator, 6 parts of terminator, 1 part of stabilizer, 10 parts of performed polymer, 3 parts of monomer, 7.5 parts of crosslinking agent, 20 parts of distilled water.The present invention has pressure difference activation capability, and the plugged zone sample formed color after 120 DEG C of aging 72h slightly deepens, but still has favorable elasticity, and elasticity is deteriorated after 130 DEG C of aging short periods.
Description
Technical field
The invention belongs to petroleum natural gas exploration technical field, it is related to a kind of oil/gas well pressure difference activation envelope and alters agent.
Background technique
As petroleum natural gas exploration work deepens continuously, there is ring in succession in the process of development in a large amount of oil/gas wells
Pneumatics power abnormal phenomenon is got worse.Currently, it is oil-well cement or ultra-fine that the common high-intensitive chemistry envelope in oil field, which alters agent, both at home and abroad
Cement, is commonly used to Water in Water Shutoff in Oil Field, envelope is altered, leak stopping etc., and field application shows oil-well cement or superfine cement intensity
Though high, volume can be shunk after solidification, and can generate microcrack, and cementing strength is poor, and sealing ratiod is low, therefore oil-well cement
It is lower that success rate is altered with superfine cement envelope, it is difficult to solve the problems, such as that oil, well pipe are altered slot outside and can not be reached for conventional sealing agent
To oil/gas well sealing skill purpose, the present invention designs a kind of difference activation envelope and alters agent.
Summary of the invention
The present invention mainly overcomes shortcoming in the prior art, proposes that a kind of oil/gas well pressure difference activation envelope alters agent.
The present invention solves technical solution provided by above-mentioned technical problem: a kind of oil/gas well pressure difference activation envelope alters agent, wraps
Include the component of following parts by weight: 100 parts of polymer emulsion, 2.5 parts of activator, 6 parts of terminator, 1 part of stabilizer, performed polymer 10
Part, 3 parts of monomer, 7.5 parts of crosslinking agent, 20 parts of distilled water.
Further technical solution is that the polymer emulsion is polymer butadiene acrylonitrile rubber cream.
Further technical solution is that the polymer butadiene acrylonitrile rubber cream comprises the following components in parts by weight: butadiene 69
Part, 31 parts of acrylonitrile, 2.66 parts of emulsifier, 0.38 part of relative nonlinear error, 0.033 part of activator, initiator
0.0135 part, 0.02 part of oxygen scavenger, 220 parts of soft water.
Further technical solution is that the emulsifier is rongalite, the relative nonlinear error
For tert-dodecyl mercaptan, the activator is ethylenediamine tetra-acetic acid-ferrisodium salt, and the initiator is di-isopropylbenzene hydroperoxide.
Further technical solution is that the activator is electrolyte.
Further technical solution is that the terminator is double-chain quaternary ammonium salt surfactant.
Beneficial effects of the present invention: the present invention has pressure difference activation capability, and the plugged zone sample formed is at 120 DEG C
Color slightly deepens after aging 72h, but still has favorable elasticity, and elasticity is deteriorated after 130 DEG C of aging short periods.
Detailed description of the invention
Fig. 1 is that the pressure difference activation envelope that embodiment one preliminarily forms alters agent.
Specific embodiment
Further description is done to the present invention below with reference to embodiment and attached drawing.
Embodiment one
A kind of oil/gas well pressure difference activation envelope of the invention alters agent, comprises the following components in parts by weight: polymer butadiene acrylonitrile rubber cream
100 parts, 2.5 parts of activator, 6 parts of terminator, 1 part of stabilizer, 10 parts of performed polymer, 3 parts of monomer, 7.5 parts of crosslinking agent, distilled water
20 parts.
The polymer butadiene acrylonitrile rubber cream comprises the following components in parts by weight: 69 parts of butadiene, 31 parts of acrylonitrile, emulsifier
2.66 parts, it is 0.38 part of relative nonlinear error, 0.033 part of activator, 0.0135 part of initiator, 0.02 part of oxygen scavenger, soft
220 parts of water.
Above-mentioned formula is prepared according to following steps:
(1) 100 parts of polymer butadiene acrylonitrile rubber creams are added in distilled water under agitation, mixing speed is controlled 1200
Rev/min, 2.5 parts of activator solns are slowly added in the case where controlling speed, after react 5h；
(2) 6 parts of terminators are added and stir 5min；
(3) 3 parts of monomers and 10 parts of performed polymers are added, stir evenly；
(4) 7.5 parts of crosslinking agents are added in 70 DEG C of stirring 60min；
(5) 1 part of stabilizer is added, is stirred evenly, that is, forms pressure difference activation envelope and alters agent.
The performance for altering agent to the prepared pressure difference of embodiment one activation envelope is evaluated
One, screw thread seal-off effect is damaged
The envelope prepared is altered into agent deposit in intermediate receptacle, there are one between the intermediate receptacle and damaged screw screw thread
Valve, system use the pressure supply of nitrogen gas cylinder.After pressurization, observation liquid passes through damage screw thread situation.
To show plugging effect, the polymer H latex without any processing is altered into agent with pressure difference activation envelope and blocks damage silk
Button effect is compared.Experimentation, high pressure effect under, whole polymer H latex through damage screw thread at sprayed rapidly and
Out, fail effectively to block damage silk mouth.And pressure difference activation is sealed when altering agent through at damage screw thread, and certain volume liquid is begun to flow out,
Under differential pressure action, flow is smaller and smaller, is gradually decreased as drop-wise, eventually becomes Micro blazed-grating, until blocking completely to the end.Knot
After beam tests provision for disengagement, display envelope alters agent and forms elastic high-strength gel at screw thread, and it is still stream that envelope, which alters agent, in pipeline
The dynamic good liquid of property.
Entirely the experimental results showed that, envelope alters agent and activates performance with apparent pressure difference, can be in leak source high shear forces
Under, it reacts rapidly between particle, has the characteristics that form high-strength gel and block leak source.Envelope is formed in damage silk mouth
After blocking layer, is pumped using high voltage stabilizing and carry out pressure-bearing experiment, the results showed that plugged zone pressure-bearing 30.90MPa is not let out still after 5 hours
Leakage.
Two, envelope alters the pressure difference activity of agent
Sealant is prepared at optimum conditions, the sieve of 200 mesh is added in Buchner funnel and simulates leakage scenarios, with true
Sky pump forms Buchner funnel inside and outside differential pressure action, and the state that envelope alters agent sealing front and back is shown in Fig. 1.As seen from the figure, envelope is altered agent and is being sealed
The preceding liquid for flowing, forms the flexible sealed solid agent for being close to sieve after sealing, illustrate that pressure difference activation envelope alters agent
It can assemble in the case where there is pressure difference and form sealant, effectively sealing leak source.Vacuum pump can stablize the maximum in 0.1MPa
Under negative pressure, illustrate to have sealed sieve at this pressure.
Three, slit seal-off effect
Visualization pressure difference leaking stoppage experiment instrument slit width is adjusted, envelope is altered into agent and is passed through at various pressures with different shear rate
Slit observes the closure situation at slit.Experimental result is as shown in table 1.
1 envelope of table alters closure experimental result of the agent at different slit widths
Four, system temperature tolerance
Experiment has carried out envelope using high temperature ageing tank and has altered agent product temperature tolerance test, and test result is as shown in table 2.
2 envelope of table alters agent product temperature tolerance test result
| Aging temperature/DEG C | Ageing time/h | Phenomenon |
| 30 | 24 | Liquid stabilising |
| 60 | 24 | Liquid stabilising |
| 80 | 24 | Liquid stabilising |
| 90 | 24 | Liquid stabilising |
| 100 | 24 | There is a small amount of reaction, mobility is preferable |
| 110 | 24 | It reacts, bulky grain occurs, there is mobility |
| 120 | 2 | It reacts, unstability solidification |
| 130 | 1 | Raw reaction, unstability solidification |
From the results, it was seen that unstability Hirschfeld-Klinger reaction will not occur for product when temperature is at 90 DEG C or less；At temperature
In 90~110 DEG C, product reacts, but still has preferable mobility；When temperature is more than 110 DEG C, occur between system micelle
Reaction, raw reaction, unstability are frozen into solid, lose flowability in the short time.
Five, plugged zone temperature tolerance
The leak stopping layer heat aging property of formation also determines that envelope alters timeliness, and the good material of temperature tolerance, which is able to maintain, alters a little
Long term seal.Thermal ageing test has been carried out to the plugged zone sampling of formation in experiment.Experiments have shown that sample is in 120 DEG C of agings
Color slightly deepens after 72h, but still has favorable elasticity.And color sample is sallow after 130 DEG C of aging short periods, only keeps
It is more small.
Pressure difference activation envelope alters agent properties of product evaluation result and shows that envelope alters agent with pressure difference activation capability.High pressure leaking stoppage examination
Test the result shows that, damage 6 screw thread of Φ and 0.5mm or less slit leak source be capable of forming envelope and alter layer, which is able to bear
30MPa pressure difference.When temperature is at 90 DEG C or less, unstability Hirschfeld-Klinger reaction will not occur for product；When temperature be in 90~110 DEG C, produce
Product react, but still have preferable mobility；When temperature is more than 110 DEG C, react between system micelle, in the short time
Raw reaction, unstability are frozen into solid, lose flowability.The plugged zone sample of formation color after 120 DEG C of aging 72h slightly deepens,
But still there is favorable elasticity, and elasticity is deteriorated after 130 DEG C of aging short periods.
The above is not intended to limit the present invention in any form, although the present invention takes off through the foregoing embodiment
Show, however, it is not intended to limit the invention, any person skilled in the art, is not departing from technical solution of the present invention model
In enclosing, is made when the technology contents using the disclosure above and change or be modified to the equivalent embodiments of equivalent variations a bit, but is all
It is to the above embodiments according to the technical essence of the invention any simply to repair without departing from the content of technical solution of the present invention
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (6)
1. a kind of oil/gas well pressure difference activation envelope alters agent, which is characterized in that comprise the following components in parts by weight: including following parts by weight
Component: 100 parts of polymer emulsion, 2.5 parts of activator, 6 parts of terminator, 1 part of stabilizer, 10 parts of performed polymer, 3 parts of monomer, hand over
Join 7.5 parts of agent, 20 parts of distilled water.
2. a kind of oil/gas well pressure difference activation envelope according to claim 1 alters agent, which is characterized in that the polymer emulsion is
Polymer butadiene acrylonitrile rubber cream.
3. a kind of oil/gas well pressure difference activation envelope according to claim 2 alters agent, which is characterized in that the polymer butadiene acrylonitrile rubber
Cream comprises the following components in parts by weight: 69 parts of butadiene, 31 parts of acrylonitrile, 2.66 parts of emulsifier, relative nonlinear error
0.38 part, 0.033 part of activator, 0.0135 part of initiator, 0.02 part of oxygen scavenger, 220 parts of soft water.
4. a kind of oil/gas well pressure difference activation envelope according to claim 3 alters agent, which is characterized in that the emulsifier is formaldehyde
Sodium bisulphite, the relative nonlinear error are tert-dodecyl mercaptan, and the activator is ethylenediamine tetra-acetic acid-ferrisodium
Salt, the initiator are di-isopropylbenzene hydroperoxide.
5. a kind of oil/gas well pressure difference activation envelope according to claim 1 alters agent, which is characterized in that the activator is electrolysis
Matter.
6. a kind of oil/gas well pressure difference activation envelope according to claim 1 alters agent, which is characterized in that the terminator is double-strand
Quaternary surfactant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540157.6A CN110218554A (en) | 2019-06-21 | 2019-06-21 | A kind of oil/gas well pressure difference activation envelope alters agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540157.6A CN110218554A (en) | 2019-06-21 | 2019-06-21 | A kind of oil/gas well pressure difference activation envelope alters agent |
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| Publication Number | Publication Date |
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| CN110218554A true CN110218554A (en) | 2019-09-10 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367897B (en) * | 2008-10-08 | 2010-06-09 | 中国石油集团工程技术研究院 | Synthesis of modified styrene butadiene rubber latex special for well cementing cement paste for oil-gas field |
| CA2703043A1 (en) * | 2008-12-18 | 2010-06-18 | Basf Se | Process for blocking underground formations |
| CN102643633A (en) * | 2012-04-06 | 2012-08-22 | 茂名市三元化工有限公司 | High-temperature and anti-salt gas-channeling-preventing agent and manufacturing method thereof |
| CN104151652A (en) * | 2014-08-13 | 2014-11-19 | 廊坊古莱特石油技术有限公司 | Pressure-difference-activated sealant and preparation method thereof |
| WO2017177176A1 (en) * | 2016-04-07 | 2017-10-12 | Molecular Rebar Design, Llc | Nanotube mediation of degradative chemicals for oil-field applications |
| CN107722955A (en) * | 2017-09-27 | 2018-02-23 | 克拉玛依市红都有限责任公司 | Outer seal stoppage agent of variable density pipe and preparation method thereof |
| CN109852356A (en) * | 2019-01-15 | 2019-06-07 | 古莱特科技股份有限公司 | A kind of closure oil/gas well formation channels compound leakage stop agent |
-
2019
- 2019-06-21 CN CN201910540157.6A patent/CN110218554A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367897B (en) * | 2008-10-08 | 2010-06-09 | 中国石油集团工程技术研究院 | Synthesis of modified styrene butadiene rubber latex special for well cementing cement paste for oil-gas field |
| CA2703043A1 (en) * | 2008-12-18 | 2010-06-18 | Basf Se | Process for blocking underground formations |
| CN102643633A (en) * | 2012-04-06 | 2012-08-22 | 茂名市三元化工有限公司 | High-temperature and anti-salt gas-channeling-preventing agent and manufacturing method thereof |
| CN104151652A (en) * | 2014-08-13 | 2014-11-19 | 廊坊古莱特石油技术有限公司 | Pressure-difference-activated sealant and preparation method thereof |
| WO2017177176A1 (en) * | 2016-04-07 | 2017-10-12 | Molecular Rebar Design, Llc | Nanotube mediation of degradative chemicals for oil-field applications |
| CN107722955A (en) * | 2017-09-27 | 2018-02-23 | 克拉玛依市红都有限责任公司 | Outer seal stoppage agent of variable density pipe and preparation method thereof |
| CN109852356A (en) * | 2019-01-15 | 2019-06-07 | 古莱特科技股份有限公司 | A kind of closure oil/gas well formation channels compound leakage stop agent |
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| Title |
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Application publication date: 20190910 |