CN104513653A - Double-gel oil-water well blocking agent and preparation method thereof - Google Patents
Double-gel oil-water well blocking agent and preparation method thereof Download PDFInfo
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- CN104513653A CN104513653A CN201410847864.7A CN201410847864A CN104513653A CN 104513653 A CN104513653 A CN 104513653A CN 201410847864 A CN201410847864 A CN 201410847864A CN 104513653 A CN104513653 A CN 104513653A
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- 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
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- 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
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
-
- 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
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
Abstract
The invention relates to a double-gel oil-water well blocking agent and a preparation method thereof. The double-gel oil-water well blocking agent comprises the following components in parts by weight: 44.4-55.0 parts of ultrafine cement, 1.0-1.75 parts of an AMPS+AM copolymer (the weight content of AMPS is higher than or equal to 20 percent), 0.1-0.2 part of a crosslinking agent, 0-0.25 part of a gel enhancer and 42.8-54.5 parts of water, wherein the water is running water or formation water. The intensity of a double-gel system and the blocking efficiency are improved according to different gelatinizing times of the two gel systems, namely the AMPS+AM copolymer and the ultrafine cement, and different characters of the two gel systems subjected to gelatinization.
Description
Technical field
The present invention relates to oilfield exploitation technical field, particularly a kind of two gel oil and water well plugging agent and preparation method thereof, based on high-strength gel, coordinates superfine cement, by twice gelling, achieves gel shutoff, solidification shutoff once completes.Be applicable to water breakthrough between well profile modification, the displacement of reservoir oil and oil well plugging high aquifer formation, plugged zone.
Background technology
At present, China's major part oil field enters high water cut rate and recovers the oil, and water outlet is day by day serious.Simultaneously, due to the impact of well cementation, perforation and stratal configuration factor, gang up outside part oil water well tube, cause interlayer interference, water layer water pours in pit shaft by bunch groove segment, cause oil well output sharply to decline, moisture rising, oil well envelope string, water blockoff are one of effective measure keeping oilfield stable production high yield.
Poplar is built in " development of high-temperature oil reservoir organic and inorganic cross-linking system and the performance evaluation " literary composition be published in clearly etc. on the 29th volume the 2nd phase " oilfield chemistry " in 2012 for high-temperature oil reservoir environment, have studied the organic and inorganic be made up of organic resin performed polymer-Inorganic Silicon Compound and stablizer and be cross-linked blocking agent system, obtain more satisfactory result.Utilize the microtexture after ESEM system plastic in experiment, and at 130 DEG C, carried out indoor optimization experiment, draw the blocking agent formula after optimizing.The highest heatproof can reach 140 DEG C, at 130 DEG C, gelation time 2 ~ 24h is adjustable, and at 110 DEG C, gelation time extends to more than 50h.Viscosity change in blocking agent plastic process illustrates that the injection of blocking agent is good, and organic and inorganic is cross-linked blocking agent sealing ratiod can reach more than 98.5%.
" development of JTD blocking agent and the application " literary composition be published on the 27th volume the 4th phase " oil drilling technology " in 1999 such as Luo Yue proposes a kind of novel organic-inorganic composite plugging agent (JTD), and has carried out comprehensive evaluation to its performance.Result shows, JTD blocking agent gel-forming property is good, and plugging strength is high, and flushing resistance is good, be especially adapted to shutoff Thief zone, stratum with big pore passage, and site operation is easy, and construction consumption is few, and cost is low.Be constructed into power 100%, be efficiently greater than 90%.
What length etc. is published in " performance characteristic of macropore and profile control countermeasure " literary composition of " oil drilling technology " of the 22nd volume fifth phase in 2000 determines with HD-1 inorganic particle type+LWSD-1 calcium lignin sulphonate gel-type composite plugging agent profile control system macropore plugging, and proposes profile control macropore plugging well and story selecting principle and profile control shutoff countermeasure thereof in detail.
Although these technology can solve the problem of well profile modification and the displacement of reservoir oil and water breakthrough between oil well plugging high aquifer formation and plugged zone to some extent, all there is some weak point, the problems such as such as, temperature influence is large, and formation colloid ultimate compression strength is weak.And the inorganics in these technology is all fill as physics to use, and can only form a gel, and the intensity of gel does not have essence to change, or elastic colloid, intensity is low.Plain polypropylene acid amides and cement with the use of time gel time short, can not field demand be met.
The present invention overcomes the deficiencies in the prior art, adopts the method for two gel, selected AMPS+AM multipolymer and superfine cement with the use of, through twice gelling, complete by the transition process of elastogel to rigid gel.
Summary of the invention
The object of this invention is to provide a kind of two gel oil and water well plugging agent and preparation method thereof, effectively in conjunction with the advantage of organic gel plugging agent and Cement Slurry, abandon its shortcoming.Utilize the different characteristics after the different gelation time of AMPS+AM multipolymer and superfine cement two kinds of gelling systems and plastic, strengthen intensity and the shutoff efficiency of two gelling system.Two gelinite assembly organogel, inorganic gel are in one, two Gelling Water shutoff Agent is based on high-strength gel, coordinate superfine cement, once gel formation elastogel in formation temperature effect, two-step gelation cement solidification forms the solid of some strength, thus effectively overcomes polymer gel in the low problem of high permeability formation sealing ratiod.
The technical solution used in the present invention is:
A kind of two gel oil and water well plugging agent, comprises the component of following parts by weight:
Superfine cement 44.4-55.0 part; AMPS+AM multipolymer (AMPS weight content >=20%) 1.0-1.75 part; Linking agent 0.1-0.2 part; Gel enhancing agent 0-0.25 part; Water 42.8-54.5 part; Described water is tap water or local water.
Preferably, the parts by weight sum of described component is 100 parts.
Preferably, in described AMPS+AM multipolymer, 20%≤AMPS weight content≤50%.
Preferably, described linking agent is organic chrome cross linker.
Preferably, described gel enhancing agent is sodium lignosulfonate.
Present invention also offers the preparation method of above-mentioned pair of gel oil and water well plugging agent, comprise the steps: first 44.4-55.0 part superfine cement to be added in 42.8-54.5 part water to dissolve, add 0-0.25 part gel enhancing agent and 1.0-1.75 part AMPS+AM multipolymer again after dissolving completely, add 0.1-0.2 part linking agent after dissolving 1.5 ~ 2h and stir and get final product.
The raw material mentioned in the present invention is commercially available prod, all directly can buy and obtain.
The beneficial effect that the present invention has:
1), the present invention once injects twice gel, has better plugging strength and shutoff efficiency.
2), the present invention has selected AMPS (2-acrylamide-2-methylpro panesulfonic acid)+AM (acrylamide) multipolymer and superfine cement acting in conjunction to form gel, when not using the additive such as common dispersion agent, retardant in Cement Slurry, it is made again to reach the effect of dispersion, slow setting.(plain polypropylene acid amides and cement with the use of time gel time short, can not field demand be met.)
3), the viscoelastic colloidal that formed after the present invention's gel, effectively prevent the problem that Cement Slurry is easily flooded, the rigidity colloid that two-step gelation is formed enhances the plugging effect of system, realizes gel shutoff, solidification shutoff once completes.
4), rheological is good, sealing ratiod is high, the intensity of solidification shutoff is adjustable.
5), nontoxic, pollution-free, construction safety, preparation is simple, easy to operate, plugging effect is good.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but do not limit protection scope of the present invention.
Embodiment 1:
A kind of two gel oil and water well plugging agent (hereinafter referred to as blocking agent), component and parts by weight thereof are:
Superfine cement: 44.4 parts;
AMPS+AM multipolymer (AMPS weight content 20%): 1.0 parts;
Linking agent: 0.1 part;
Gel enhancing agent: 0.1 part;
Local water: 54.4 parts.
Described linking agent is: organic chrome cross linker; Described gel enhancing agent is: sodium lignosulfonate.
The preparation method of this blocking agent, under comprising the steps: normal temperature and pressure, local water is put in stirred pot, add superfine cement, AMPS+AM multipolymer (AMPS weight content 20%) and gel enhancing agent is slowly added after stirring, stir 1.5-2h to dissolving completely, then add linking agent and stir, so far complete the preparation of blocking agent.
Embodiment 2:
A kind of two gel oil and water well plugging agent, component and parts by weight thereof are:
Superfine cement 47.4 parts;
AMPS+AM multipolymer (AMPS weight content 20%) 1.5 parts;
Linking agent 0.15 part;
Gel enhancing agent 0.25 part;
Local water 50.7 parts.
Described linking agent is: organic chrome cross linker; Described gel enhancing agent is: sodium lignosulfonate.
The method of the two gel oil and water well plugging agent of preparation is identical with embodiment 1.
Embodiment 3
A kind of two gel oil and water well plugging agent, component and parts by weight thereof are:
Superfine cement 50.0 parts;
AMPS+AM multipolymer (AMPS weight content 20%): 1.75 parts;
Linking agent 0.2 part;
Gel enhancing agent 0.25 part;
Local water 47.8 parts.
Described linking agent is: organic chrome cross linker; Described gel enhancing agent is: sodium lignosulfonate.
The method of the two gel oil and water well plugging agent of preparation is identical with embodiment 1.
Embodiment 4
A kind of two gel oil and water well plugging agent, component and parts by weight thereof are:
Superfine cement 55.0 parts;
AMPS+AM multipolymer (AMPS weight content 20%) 1.75 parts;
Linking agent 0.2 part;
Gel enhancing agent 0.25 part;
Local water 42.8 parts.
Described linking agent is: organic chrome cross linker; Described gel enhancing agent is: sodium lignosulfonate.
The method of the two gel oil and water well plugging agent of preparation is identical with embodiment 1.
Embodiment 5:
A kind of two gel oil and water well plugging agent, component and parts by weight thereof are:
Superfine cement: 44.4 parts;
AMPS+AM multipolymer (AMPS weight content 20%): 1.0 parts;
Linking agent: 0.1 part;
Local water: 54.5 parts.
Described linking agent is: organic chrome cross linker;
The preparation method of this blocking agent, under comprising the steps: normal temperature and pressure, local water is put in stirred pot, add superfine cement, AMPS+AM multipolymer (AMPS weight content 20%) is slowly added after stirring, stir 1.5-2h to dissolving completely, then add linking agent and stir, so far complete the preparation of blocking agent.
Embodiment 6:
A kind of two gel oil and water well plugging agent, component and parts by weight thereof are:
Superfine cement 47.4 parts;
AMPS+AM multipolymer (AMPS weight content 20%) 1.5 parts;
Linking agent 0.15 part;
Local water 50.95 parts.
Described linking agent is: organic chrome cross linker;
The method of the two gel oil and water well plugging agent of preparation is identical with embodiment 5.
Embodiment 7
A kind of two gel oil and water well plugging agent, component and parts by weight thereof are:
Superfine cement 50.0 parts;
AMPS+AM multipolymer (AMPS weight content 20%): 1.75 parts;
Linking agent 0.2 part;
Local water 48.05 parts.
Described linking agent is: organic chrome cross linker;
The method of the two gel oil and water well plugging agent of preparation is identical with embodiment 5.
Embodiment 8
A kind of two gel oil and water well plugging agent, component and parts by weight thereof are:
Superfine cement 55.0 parts;
AMPS+AM multipolymer (AMPS weight content 20%) 1.75 parts;
Linking agent 0.2 part;
Local water 43.05 parts.
Described linking agent is: organic chrome cross linker;
The method of the two gel oil and water well plugging agent of preparation is identical with embodiment 5.
Observe the obtained two gel oil and water well plugging agents of embodiment 1,2,3,4,5,6,7,8 under 50 DEG C of conditions, the change of state in 48 hours.Good mobility is had after polymer dissolution; After 5 ~ 6h, first time gel occurs, mobility is deteriorated; In 24h, system has been solidified.System set time≤24h, ultimate compression strength >3.3MPa.Ultimate compression strength is measured by microcomputer controlled electronic pressure experiment machine in laboratory, and the ultimate compression strength of embodiment 1,2,3,4,5,6,7,8 is respectively 3.352MPa, 4.235MPa, 4.823MPa, 5.537MPa, 3.368MPa, 4.251MPa, 4.843MPa, 5.567MPa.
Application Example 1
Two gel oil and water well plugging agent injection process is:
1), close sleeve valve, just squeeze foremast fresh water 0.6m
3+ blocking agent+rear pad fresh water 0.6m
3+ well control fluid, releases oil pipe by blocking agent, and squeezing top pressure is no more than design pressure;
2), anti-flushing well is consistent to importing and exporting fluidity;
3) oil pipe is carried;
4), seat well head, solidifying 48h is waited in pressurization (being no more than design pressure).
By two gel oil and water well plugging agent maintenance at 40-60 DEG C of temperature obtained for embodiment 1,2,3,4,5,6,7,8, in 48h, complete twice gel, form rigidity colloid.
Claims (6)
1. a two gel oil and water well plugging agent, is characterized in that: the component comprising following parts by weight: superfine cement 44.4-55.0 part; AMPS+AM multipolymer (AMPS weight content >=20%) 1.0-1.75 part; Linking agent 0.1-0.2 part; Gel enhancing agent 0-0.25 part; Water 42.8-54.5 part; Described water is tap water or local water.
2. a kind of two gel oil and water well plugging agent according to claim 1, is characterized in that: the parts by weight sum of described component is 100 parts.
3. a kind of two gel oil and water well plugging agent according to claim 1, is characterized in that: in described AMPS+AM multipolymer, 20%≤AMPS weight content≤50%.
4. a kind of two gel oil and water well plugging agent according to any one of claim 1-3, is characterized in that: described linking agent is organic chrome cross linker.
5. a kind of two gel oil and water well plugging agent according to any one of claim 1-3, is characterized in that: described gel enhancing agent is sodium lignosulfonate.
6. the preparation method of two gel oil and water well plugging agent described in any one of claim 1-5, it is characterized in that: comprise the steps: first 44.4-55.0 part superfine cement to be added in 42.8-54.5 part water to dissolve, add 0-0.25 part gel enhancing agent and 1.0-1.75 part AMPS+AM multipolymer again after dissolving completely, add 0.1-0.2 part linking agent after dissolving 1.5 ~ 2h and stir and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847864.7A CN104513653A (en) | 2014-12-31 | 2014-12-31 | Double-gel oil-water well blocking agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847864.7A CN104513653A (en) | 2014-12-31 | 2014-12-31 | Double-gel oil-water well blocking agent and preparation method thereof |
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| CN104513653A true CN104513653A (en) | 2015-04-15 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086966A (en) * | 2015-09-11 | 2015-11-25 | 中石化石油工程技术服务有限公司 | Shallow-well high-polymer gel plugging agent and preparation method thereof |
| CN105219365A (en) * | 2015-09-11 | 2016-01-06 | 中石化石油工程技术服务有限公司 | Middle-deep well cross-linked polymer gel plugging agent and preparation method thereof |
| CN106753293A (en) * | 2016-11-29 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of colloidal cements blocking agent and preparation method and applications |
| CN110144198A (en) * | 2019-06-13 | 2019-08-20 | 中国石油集团长城钻探工程有限公司 | A kind of oil base drilling fluid GEL USED FOR PLUGGING WELL LOST CIRCULATION and preparation method thereof |
| CN110965962A (en) * | 2019-11-29 | 2020-04-07 | 中国石油集团川庆钻探工程有限公司 | Method for recovering production and deblocking of sealed gas well |
| CN113528105A (en) * | 2020-04-17 | 2021-10-22 | 中石化石油工程技术服务有限公司 | Geopolymer-based dual plugging agent and preparation and application methods thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086966A (en) * | 2015-09-11 | 2015-11-25 | 中石化石油工程技术服务有限公司 | Shallow-well high-polymer gel plugging agent and preparation method thereof |
| CN105219365A (en) * | 2015-09-11 | 2016-01-06 | 中石化石油工程技术服务有限公司 | Middle-deep well cross-linked polymer gel plugging agent and preparation method thereof |
| CN105219365B (en) * | 2015-09-11 | 2017-11-24 | 中石化石油工程技术服务有限公司 | Middle-deep well cross-linked polymer gel sealing agent and preparation method thereof |
| CN106753293A (en) * | 2016-11-29 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of colloidal cements blocking agent and preparation method and applications |
| CN110144198A (en) * | 2019-06-13 | 2019-08-20 | 中国石油集团长城钻探工程有限公司 | A kind of oil base drilling fluid GEL USED FOR PLUGGING WELL LOST CIRCULATION and preparation method thereof |
| CN110144198B (en) * | 2019-06-13 | 2021-12-03 | 中国石油天然气集团有限公司 | Gel plugging agent for oil-based drilling fluid and preparation method thereof |
| CN110965962A (en) * | 2019-11-29 | 2020-04-07 | 中国石油集团川庆钻探工程有限公司 | Method for recovering production and deblocking of sealed gas well |
| CN110965962B (en) * | 2019-11-29 | 2022-05-06 | 中国石油集团川庆钻探工程有限公司 | Method for recovering production and deblocking of sealed gas well |
| CN113528105A (en) * | 2020-04-17 | 2021-10-22 | 中石化石油工程技术服务有限公司 | Geopolymer-based dual plugging agent and preparation and application methods thereof |
| CN113528105B (en) * | 2020-04-17 | 2022-09-09 | 中石化石油工程技术服务有限公司 | Geopolymer-based dual plugging agent and preparation and application methods thereof |
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