CN103193906A - Preparation method of delayed-coagulation acrylamide single body profile control agent - Google Patents
Preparation method of delayed-coagulation acrylamide single body profile control agent Download PDFInfo
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- CN103193906A CN103193906A CN2013101101772A CN201310110177A CN103193906A CN 103193906 A CN103193906 A CN 103193906A CN 2013101101772 A CN2013101101772 A CN 2013101101772A CN 201310110177 A CN201310110177 A CN 201310110177A CN 103193906 A CN103193906 A CN 103193906A
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Abstract
The invention relates to a preparation method of a delayed-coagulation acrylamide single body profile control agent, which relates to the technical field of the petrochemical industry. The delayed-coagulation acrylamide single body profile control agent is formed by mixing an acrylamide single body, initiator, amine crosslinking agent, stabilizer, assistant and fresh water. The preparation method is low in cost, shearing-resisting, simple in construction process, capable of delaying the coagulation, long in initial gelatinizing time, high in final set strength, good in selectivity, ingressive, firm to seal, abrasion-resisting, long in validity, capable of reducing the pollution on an oil layer, effective for coordinating the contradiction of the interlayer and the plane and capable of realizing the purpose of deep profile control. The acrylamide single body delayed-coagulation profile control agent is used for adjusting a water absorption profile of a water injection well in the water injection development process of an oil field and sealing a fluid channeling passage, a high-permeable layer and a water outlet layer of the oil well, and can effectively increase the water drive swept volume and increase the oil recovery.
Description
Technical field
The present invention relates to the petrochemical technology field, especially for adjusting profile-log of water injection in the water flooding process, the preparation technology of the plugging agent of fluid-channeling channel, high permeability formation and well water layer between the shutoff oil and water well.
Background technology
The most of Oilfield using early-stage waterfloodings of China, entered middle high water-cut stage at present, the well stimulation effect of widespread use under the original annotation water condition worse and worse, the conventional needs of transferring plugging technique also to be difficult to adapt to complicated oil reservoir profile control and water plugging, the requirement to profile control and water plugging technology in the production is more and more higher.So, be badly in need of seeking effective novel method, improve the oilfields in high water cut period development effectiveness.The height of water displacing oil recovery ratio depends on macroscopical sweep efficiency and the microscopic oil displacement efficiency that injects water, so one of main path that improves waterflooding is exactly to improve sweep efficiency.Its principle is by changing the distribution of subsurface pressure field, making injection water feed through to high oil saturation zone.Thereby the crude oil in the surplus oil district is displaced.Method commonly used has: intake profile, the changed course of oil reservoir deep fluid etc. are adopted, are adjusted in segmentation series of strata, optimization well pattern and layout, adjustment injection and extraction system, injection by force.These methods can reduce water-oil ratio significantly, improve the recovery ratio of crude oil.
In water drive and polymer flooding process, because formation heterogeneity is serious.Make and inject water and polymers soln along most permeable zone, crack, channelling layer, directly enter the oil well output, it is low to cause involving degree, and middle low permeability layer oil displacement efficiency is poor, has had a strong impact on the development effectiveness of water drive or polymer flooding.To fundamentally address this problem, just must adopt the way of profile control and water plugging to improve intake profile.
At present, the retarding crosslinked system that China grows up can be divided three classes by the type of linking agent: the one, can with organic aldehydes linking agent of amide group effect in the water-soluble polymers molecule; Another kind of be can with the transition metal organic crosslinking agent of hydroxy-acid group effect in the polymer molecule; The 3rd class is that the former two is used simultaneously.
Chemical profile control agent both at home and abroad of a great variety from the situation of practical application, is polymer gel profile control agent the most widely.Representative HPAM-high volence metal ion wherein is as Cr(III), Al(III), Zr(IV) system and the organic phenolic system of HPAM-.As can be seen, all apply to the hydro-polyacrylamide of different molecular weight in these systems as host.Use this class host to relate to the problem of the following aspects: one, owing to be to use high molecular polymer, generally to join these powder in the fresh water in advance in use in batches, the long-time stirring experienced the process of swelling and dissolving then, operates more loaded down with trivial details; Two, the molecular weight of general polyacrylamide is more high, transfers stifled effect more good.And behind big in injection process medium viscosity slitter loss rate after the price Senior Three of the polyacrylamide of high molecular, polymer dissolution, the gel-forming property, one-tenth glue intensity be affected greatly, the stratum shearing, the stratum viscosity retention ratio is low; Four, these high volence metal ion system gelation times are fast usually, initial viscosity is high, easy polluted reservoir and be unfavorable for entering the oil reservoir deep.
Be the plugging agent of host with the acrylamide both at home and abroad, gelation time only is several hrs; The construction consumption is low, transfers stifled radius little; Strong to external condition susceptibility such as temperature, become glue fast, construction risk is big, often becomes glue in the injection process in ground tanks and pit shaft, causes the accident.At present relevant acrylic amide plugging agent report seldom.
Summary of the invention
The object of the invention is to propose a kind ofly can overcome the prior art deficiency, and cost is low, anti-shearing, construction technology is simple, delays polymerization, and initial gelation time is long, become the preparation method of the retardation setting type acrylamide monomer plugging agent that intensity is high behind the glue.
Technical solution of the present invention is: acrylamide monomers, initiator, amine linking agent, stablizer, auxiliary agent and mixing of fresh water are formed.
Acrylamide monomers of the present invention, initiator, amine linking agent, stablizer and auxiliary agent account for respectively and mix 2～6%, 0.01～0.05%, 0.05～1%, 0.5～3% and 0.5～2% of total mass.
The system PH that above technology forms is 6-8, under the envrionment conditions of 60～90 ℃ of temperature, and gelation time 1～20 day.
Cost of the present invention is low, anti-shearing, construction technology is simple, delay polymerization, initial gelation time is long, final strength is high, selectivity is good, advance go, seal firmly, anti-ly wash away, validity period is long, reduce oil layer pollution, effectively adjust interlayer and horizontal contradiction, thereby reach the purpose of deep profile controlling.The present invention is a kind of novel propylene amide monomer class slow setting profile control, plugging agent, be used for the water flooding process and adjust profile-log of water injection, fluid-channeling channel, high permeability formation and well water layer between the shutoff oil and water well can effectively improve the water drive swept volume, improve oil recovery factor.
Acrylamide monomers used in the present invention be in acrylamide, Methacrylamide, vinyl cyanide, vinylformic acid or the acrylate at least any one.
Initiator used in the present invention is: be over cure acids initiator and the phenols reagent that 2～5:1 mixes with mass ratio.Wherein, over cure acids initiator is: Ammonium Persulfate 98.5, Sodium Persulfate or Potassium Persulphate; Phenols reagent is 2,6 ditertiary butyl p cresol, phenol, Pyrogentisinic Acid or 2,2
,-binaphthol is preferably 2,2
,-binaphthol.
Amine linking agent used in the present invention is: at least a arbitrarily in diethylenetriamine, Triethylenetetramine (TETA), hexamethylenetetramine, urotropine, ammoniacal liquor or the dimethylethanolamine.
Stablizer used in the present invention is Thiovanic acid ethanol thiocarbamide.
Auxiliary agent used in the present invention is at least a arbitrarily in Thiovanic acid, acetic acid or the propyl carbinol.
Embodiment
One, self-control initiator:
Be 2～5:1 with mass ratio, over cure acids initiator is mixed with phenols reagent.
The over cure acids initiator that adopts can be Ammonium Persulfate 98.5, Sodium Persulfate or Potassium Persulphate.
The phenols reagent that adopts can be 2,6 ditertiary butyl p cresol, phenol, Pyrogentisinic Acid or 2,2
,-binaphthol is preferably 2,2
,-binaphthol.
Two, preparation plugging agent:
Earlier acrylamide is made into the aqueous solution, directly adds homemade initiator again, and then add linking agent, stablizer, auxiliary agent and fresh water.
The acrylamide monomers that adopts can in acrylamide, Methacrylamide, vinyl cyanide, vinylformic acid or the acrylate at least any one.
The amine linking agent that adopts can be at least a arbitrarily in diethylenetriamine, Triethylenetetramine (TETA), hexamethylenetetramine, urotropine, ammoniacal liquor or the dimethylethanolamine.
The stablizer that adopts can be Thiovanic acid ethanol thiocarbamide.
The auxiliary agent that adopts can be in Thiovanic acid, acetic acid or the propyl carbinol at least a arbitrarily.
Control the add-on of each raw material, mix 2～6%, 0.01～0.05%, 0.05～1%, 0.5～3% and 0.5～2% of total mass so that acrylamide monomers, initiator, amine linking agent, stablizer and auxiliary agent account for respectively.
Three, use:
When acrylamide monomers, initiator, amine linking agent, stablizer and auxiliary agent account for respectively mix total mass 4%, 0.02%, 0.08%, 1%, 2% the time, under 70 ℃ of envrionment conditionss, preceding 10 days whole systems can unrestricted flow as water, presetting period is 11 days, final setting time is 20 days, and intensity reaches the F level.
When acrylamide monomers, initiator, amine linking agent, stablizer and auxiliary agent account for respectively mix total mass 3%, 0.03%, 0.06%, 1%, 1% the time, under 90 ℃ of envrionment conditionss, preceding 7 days whole systems can unrestricted flow as water, presetting period is 8 days, final setting time is 16 days, and intensity reaches the G level.
Claims (8)
1. the preparation method of a retardation setting type acrylamide monomer plugging agent is characterized in that acrylamide monomers, initiator, amine linking agent, stablizer, auxiliary agent and mixing of fresh water are formed.
2. according to the described preparation method of claim 1, it is characterized in that described acrylamide monomers, initiator, amine linking agent, stablizer and auxiliary agent account for 2～6%, 0.01～0.05%, 0.05～1%, 0.5～3% and 0.5～2% of mixing total mass respectively.
3. according to the described preparation method of claim 1, it is characterized in that described acrylamide monomers be in acrylamide, Methacrylamide, vinyl cyanide, vinylformic acid or the acrylate at least any one.
4. according to the described preparation method of claim 1, it is characterized in that described initiator is: be over cure acids initiator and the phenols reagent that 2～5:1 mixes with mass ratio, described over cure acids initiator is: Ammonium Persulfate 98.5, Sodium Persulfate or Potassium Persulphate; Described phenols reagent is 2,6 ditertiary butyl p cresol, phenol, Pyrogentisinic Acid or 2,2
,-binaphthol.
5. according to the described preparation method of claim 4, it is characterized in that described phenols reagent is 2,2
,-binaphthol.
6. according to the described preparation method of claim 1, it is characterized in that described amine linking agent is: at least a arbitrarily in diethylenetriamine, Triethylenetetramine (TETA), hexamethylenetetramine, urotropine, ammoniacal liquor or the dimethylethanolamine.
7. according to the described preparation method of claim 1, it is characterized in that described stablizer is Thiovanic acid ethanol thiocarbamide.
8. according to the described preparation method of claim 1, it is characterized in that described auxiliary agent is at least a arbitrarily in Thiovanic acid, acetic acid or the propyl carbinol.
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| CN201310110177.2A CN103193906B (en) | 2013-04-01 | 2013-04-01 | Preparation method of delayed-coagulation acrylamide single body profile control agent |
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| CN201310110177.2A CN103193906B (en) | 2013-04-01 | 2013-04-01 | Preparation method of delayed-coagulation acrylamide single body profile control agent |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666423A (en) * | 2013-12-04 | 2014-03-26 | 天津大港油田滨港集团博弘石油化工有限公司 | Gel injection type profile control agent |
| CN104017135A (en) * | 2014-06-20 | 2014-09-03 | 武汉工程大学 | Method for preparing microbial polysaccharide modified copolymer gel plugging agent |
| CN105154054A (en) * | 2015-08-07 | 2015-12-16 | 中国石油化工股份有限公司胜利油田分公司勘探开发研究院 | Cross-linked polymer flooding agent adopting triamine participating in synthesis and preparation method of cross-linked polymer flooding agent |
| CN107686723A (en) * | 2017-08-11 | 2018-02-13 | 中国石油天然气股份有限公司 | CO (carbon monoxide)2Response in-situ gel channeling sealing sol and preparation method and application thereof |
| CN113773821A (en) * | 2020-06-10 | 2021-12-10 | 中国石油天然气股份有限公司 | High-temperature blockage-regulating cleanup additive and preparation method and application thereof |
| CN115991980A (en) * | 2021-10-19 | 2023-04-21 | 中国石油化工股份有限公司 | Profile control agent for oilfield water injection well and preparation method thereof |
| CN116554846A (en) * | 2023-01-02 | 2023-08-08 | 西南石油大学 | Gel plugging agent suitable for hypotonic ultra-hypotonic fractured reservoir and preparation method thereof |
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| CN102382244A (en) * | 2011-08-17 | 2012-03-21 | 西南石油大学 | Gelation-delayed in-situ polymerized water shutoff gel for high-temperature reservoirs |
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2013
- 2013-04-01 CN CN201310110177.2A patent/CN103193906B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382244A (en) * | 2011-08-17 | 2012-03-21 | 西南石油大学 | Gelation-delayed in-situ polymerized water shutoff gel for high-temperature reservoirs |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666423A (en) * | 2013-12-04 | 2014-03-26 | 天津大港油田滨港集团博弘石油化工有限公司 | Gel injection type profile control agent |
| CN103666423B (en) * | 2013-12-04 | 2016-05-25 | 天津大港油田滨港集团博弘石油化工有限公司 | A kind of gel-type profile control agent that injects |
| CN104017135A (en) * | 2014-06-20 | 2014-09-03 | 武汉工程大学 | Method for preparing microbial polysaccharide modified copolymer gel plugging agent |
| CN105154054A (en) * | 2015-08-07 | 2015-12-16 | 中国石油化工股份有限公司胜利油田分公司勘探开发研究院 | Cross-linked polymer flooding agent adopting triamine participating in synthesis and preparation method of cross-linked polymer flooding agent |
| CN105154054B (en) * | 2015-08-07 | 2017-12-22 | 中国石油化工股份有限公司胜利油田分公司勘探开发研究院 | A kind of tertiary amine participates in crosslinking polymer oil displacement agent of synthesis and preparation method thereof |
| CN107686723A (en) * | 2017-08-11 | 2018-02-13 | 中国石油天然气股份有限公司 | CO (carbon monoxide)2Response in-situ gel channeling sealing sol and preparation method and application thereof |
| CN107686723B (en) * | 2017-08-11 | 2020-03-10 | 中国石油天然气股份有限公司 | CO (carbon monoxide)2Response in-situ gel channeling sealing sol and preparation method and application thereof |
| CN113773821A (en) * | 2020-06-10 | 2021-12-10 | 中国石油天然气股份有限公司 | High-temperature blockage-regulating cleanup additive and preparation method and application thereof |
| CN115991980A (en) * | 2021-10-19 | 2023-04-21 | 中国石油化工股份有限公司 | Profile control agent for oilfield water injection well and preparation method thereof |
| CN116554846A (en) * | 2023-01-02 | 2023-08-08 | 西南石油大学 | Gel plugging agent suitable for hypotonic ultra-hypotonic fractured reservoir and preparation method thereof |
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