CN1552793A - Pre-crosslinked granular plugging agent and its production - Google Patents
Pre-crosslinked granular plugging agent and its production Download PDFInfo
- Publication number
- CN1552793A CN1552793A CNA031375227A CN03137522A CN1552793A CN 1552793 A CN1552793 A CN 1552793A CN A031375227 A CNA031375227 A CN A031375227A CN 03137522 A CN03137522 A CN 03137522A CN 1552793 A CN1552793 A CN 1552793A
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- China
- Prior art keywords
- profile
- controlling
- plugging agent
- weight parts
- persulphate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003513 alkali Substances 0.000 claims abstract description 16
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims abstract description 16
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 34
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 27
- 239000002585 base Substances 0.000 claims description 26
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 claims description 23
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 19
- 239000004160 Ammonium persulphate Substances 0.000 claims description 16
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 16
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 15
- 235000017550 sodium carbonate Nutrition 0.000 claims description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 239000012467 final product Substances 0.000 claims description 12
- 238000010298 pulverizing process Methods 0.000 claims description 12
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims description 5
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 239000004159 Potassium persulphate Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 235000019394 potassium persulphate Nutrition 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 21
- 238000007664 blowing Methods 0.000 description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- -1 compound ion Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
A pluggin agent for recovering petroleum contains acrylamide monomer, methylene biacrylamide, persulfate, filler, alkali, acrylic acid and water.
Description
Invention field
The present invention relates to precrosslink particle profile-controlling and plugging agent and production method thereof.The invention still further relates to and utilize this profile-controlling and plugging agent to carry out the method and the purposes of this profile-controlling and plugging agent in oil production of profile control, water blockoff.
Background technology
In the world along with the development of oil cause, oil-field development exists some difficult problems, increasing technology has obtained application in oil-field development, water blockoff, the application of profile control technique on the oil field for many years, and obtained certain effect, but also there is certain problem, from disclosed patent or file, up to the present, how based on underground crosslinked, as external CDG, domestic compound ion isogel system, these technology have obtained certain achievement, but also exist certain problem, as be subjected to the influence of the uncertain factor in the stratum, can not cause the not enough problem of glue or gelling strength.Have data to show, become the good compound ion of glue owing to the effect of being sheared in injection process on the ground, viscosity descends greatly, drops to about 20 by about 500.External CDG also exists similar problem, so it is just very important to invent a kind of water plugging profile control agent that is not subjected to the stratum to become glue to influence.
Summary of the invention
The purpose of this invention is to provide a kind of precrosslink particle profile-controlling and plugging agent that not influenced by ground environment, this pre-crosslinking system can be used for the water plugging and profile controlling in the oil production, has solved the problem that prior art exists.
Described profile-controlling and plugging agent comprises:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.2～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 0～330 weight part
Alkali 3.75～45 weight parts
Vinylformic acid 0～50 weight part
Water is an amount of,
Wherein said acrylamide monomers for example comprises acrylamide, Methacrylamide etc.
Persulphate comprises ammonium persulphate, Sodium Persulfate, Potassium Persulphate etc., and their mixture.They use with the form of the aqueous solution usually.
Alkali comprises yellow soda ash, sodium bicarbonate, sodium hydroxide etc., or their mixture, they can compound or the form of the aqueous solution (for example 10～40%) use.
Stopping composition comprises wilkinite, xylogen, clay, polynite, diatomite, clay, kaolin etc., or their mixture.
Water can be with tap water or deionized water, and its consumption is not special restriction, for example is generally 100～800 weight parts, preferred about 200～400 weight parts.
The method for preparing profile-controlling and plugging agent of the present invention comprises each component is mixed, and is placed to glue, and is broken then, drying, and pulverizing gets final product again.The gained material can directly drop in the oil well and use.
A kind of preferred manufacturing procedure (not using under acrylic acid situation) draw together water, acrylamide monomers, methene base bisacrylamide and persulphate mix, and drop into optional stopping composition, then temperature are controlled at below 15 ℃ and stir, add alkali then, be warmed up to for example 20～40 ℃ again, preferred 25～30 ℃ of placements, broken behind the one-tenth glue, drying, pulverizing gets final product again.
Also have a kind of preferred manufacturing procedure to comprise that (using under acrylic acid situation) is with water, acrylamide monomers and vinylformic acid uniform mixing drop into optional stopping composition then, stir the back and drop into alkali, be warmed up to about 20～40 ℃ again, preferred 25～30 ℃, drop into methene base bisacrylamide, persulphate, be placed to glue after the stirring, broken then, drying, pulverizing gets final product.
The exsiccant temperature is not special restriction, only otherwise the character of material is changed.
In above-mentioned scope, regulate consumption, can prepare the particle of varying strength and expansion multiple.
In a preferred embodiment of the invention, profile-controlling and plugging agent of the present invention comprises:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.3～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 0～330 weight part
Alkali 22.5～45 weight parts
Water is an amount of.
In this preferred embodiment, also more preferably, profile-controlling and plugging agent comprises:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.3～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 5～330 weight parts
Alkali 22.5～45 weight parts
Water is an amount of.
In second preferred embodiment of the present invention, profile-controlling and plugging agent of the present invention comprises:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.2～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 0～300 weight part
Alkali 3.75～7.5 weight parts
Vinylformic acid 12～50 weight parts
Water is an amount of.
In this preferred embodiment, profile-controlling and plugging agent of the present invention also more preferably comprises:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.2～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 5～300 weight parts
Alkali 3.75～7.5 weight parts
Vinylformic acid 12～50 weight parts
Water is an amount of.
In above all schemes, described acrylamide monomers for example comprises acrylamide, Methacrylamide etc.
Persulphate comprises ammonium persulphate, Sodium Persulfate, Potassium Persulphate etc., and their mixture.They use with the form of the aqueous solution usually.
Alkali comprises yellow soda ash, sodium bicarbonate, sodium hydroxide etc., or their mixture, they can compound or the form of the aqueous solution (for example 10～40%) use.
Stopping composition comprises wilkinite, xylogen, clay, polynite, diatomite, clay, kaolin etc., or their mixture.
Water can be with tap water or deionized water, and its consumption is not special restriction, for example is generally 100～800 weight parts, preferred about 200～400 weight parts.
Profile-controlling and plugging agent of the present invention is tried out in all kinds of oil fields and has all been obtained good effect, before using and the well water amount after using descend about 9～12%, show that profile-controlling and plugging agent of the present invention is not influenced by ground environment, be suitable for all kinds of oil wells, and viscosity and gelling strength retentivity are fine.And second embodiment be better than first embodiment, shows on viscosity and the gelling strength.
Below in conjunction with embodiment the present invention is described, it should be understood that these embodiment only are used for illustrative purposes, do not constitute limitation of the scope of the invention.
Specific embodiment
Embodiment 1
Acrylamide 150kg
Methene base acrylamide (2% solution) 20kg
Ammonium persulphate (33.3% solution) 5kg
Wilkinite 20kg
Yellow soda ash (15% solution) 160kg
Water 100kg
With water, acrylamide monomer, methene base bisacrylamide and ammonium persulphate mix, and drop into wilkinite, temperature was controlled at stir about below 15 ℃ 30 minutes then, adds yellow soda ash then and stirred 15 minutes, be warmed up to 25 ℃ again, blowing, broken behind the one-tenth glue, drying, pulverizing gets final product again.
Embodiment 2
Acrylamide 650kg
Methene base acrylamide (2% solution) 50kg
Ammonium persulphate (33.3% solution) 5kg
Xylogen 320kg
Yellow soda ash (15% solution) 200kg
Water 400kg
With water, acrylamide monomer, methene base bisacrylamide and ammonium persulphate mix, and drop into xylogen, then temperature is controlled at below 15 ℃ and stirred 30 minutes, add yellow soda ash then and stirred 15 minutes, be warmed up to 25 ℃ again, blowing, broken behind the one-tenth glue, drying, pulverizing gets final product again.
Embodiment 3
Acrylamide 350kg
Methene base acrylamide (2% solution) 25kg
Sodium Persulfate (33.3% solution) 5kg
Wilkinite 100kg
Sodium bicarbonate (15% solution) 300kg
Water 300kg
With water, acrylamide monomer, methene base bisacrylamide and ammonium persulphate mix, and drop into wilkinite, then temperature is controlled at below 15 ℃ and stirred 30 minutes, add yellow soda ash then and stirred 15 minutes, be warmed up to 30 ℃ again, blowing, broken behind the one-tenth glue, drying, pulverizing gets final product again.
Embodiment 4
Methacrylamide 150kg
Vinylformic acid 20kg
Methene base acrylamide (2% solution) 15kg
Ammonium persulphate (33.3% solution) 5kg
Clay 200kg
Yellow soda ash (15% solution) 25kg
Water 100kg
With water, methyl acrylamide monomer and vinylformic acid uniform mixing drop into clay then, stir and drop into yellow soda ash after 30 minutes, are warmed up to 30 ℃ again, drop into methene base bisacrylamide, and ammonium persulphate stirs blowing after 5 minutes, and be broken behind the one-tenth glue, drying, and pulverizing gets final product.
Embodiment 5
Acrylamide 650kg
Vinylformic acid 45kg
Methene base acrylamide (2% solution) 50kg
Ammonium persulphate (33.3% solution) 5kg
Wilkinite 250kg
Yellow soda ash (15% solution) 35kg
Water 500kg
With water, acrylamide monomer and vinylformic acid uniform mixing drop into wilkinite then, stir and drop into yellow soda ash after 30 minutes, are warmed up to 30 ℃ again, drop into methene base bisacrylamide, and ammonium persulphate stirred after 5 minutes, and blowing is broken behind the one-tenth glue, drying, and pulverizing gets final product.
Embodiment 6
Acrylamide 550kg
Vinylformic acid 45kg
Methene base acrylamide (2% solution) 50kg
Ammonium persulphate (33.3% solution) 5kg
Wilkinite 30kg
Sodium bicarbonate (15% solution) 50kg
Water 400kg
With water, acrylamide monomer and vinylformic acid uniform mixing drop into wilkinite then, stir and drop into yellow soda ash after 30 minutes, are warmed up to 25 ℃ again, drop into methene base bisacrylamide, and ammonium persulphate stirred after 5 minutes, and blowing is broken behind the one-tenth glue, drying, and pulverizing gets final product.
Embodiment 7
Acrylamide 550kg
Vinylformic acid 45kg
Methene base acrylamide (2% solution) 50kg
Ammonium persulphate (33.3% solution) 5kg
Sodium bicarbonate (15% solution) 50kg
Water 400kg
With water, acrylamide monomer and vinylformic acid uniform mixing dropped into yellow soda ash after 30 minutes, were warmed up to 25 ℃ again, dropped into methene base bisacrylamide, and ammonium persulphate stirred after 5 minutes, and blowing is broken behind the one-tenth glue, drying, and pulverizing gets final product.
Claims (10)
1, a kind of profile-controlling and plugging agent comprises:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.2～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 0～330 weight part
Alkali 3.75～45 weight parts
Vinylformic acid 0～50 weight part
Water is an amount of.
2, according to the profile-controlling and plugging agent of claim 1, comprising:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.3～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 0～330 weight part
Alkali 22.5～45 weight parts
Water is an amount of.
3, according to the profile-controlling and plugging agent of claim 1, comprising:
Acrylamide monomers 150～650 weight parts
Methene base bisacrylamide 0.2～1 weight part
Persulphate 1.2～2 weight parts
Stopping composition 0～300 weight part
Alkali 3.75～7.5 weight parts
Vinylformic acid 12～50 weight parts
Water is an amount of.
4, according to claim 1,2 or 3 profile-controlling and plugging agent, wherein acrylamide monomers is acrylamide or Methacrylamide.
5, according to claim 1,2 or 3 profile-controlling and plugging agent, wherein persulphate is an ammonium persulphate, Potassium Persulphate or Sodium Persulfate.
6, according to claim 1,2 or 3 profile-controlling and plugging agent, wherein alkali is yellow soda ash, sodium bicarbonate, or sodium hydroxide.
7, according to claim 1,2 or 3 profile-controlling and plugging agent, wherein stopping composition comprises wilkinite, xylogen, clay, polynite, diatomite, clay, kaolin etc., or their mixture.
8, the method for preparing the profile-controlling and plugging agent of claim 1 or 2, be characterised in that and comprise water, acrylamide monomers, methene base bisacrylamide and persulphate mix, the optional stopping composition that drops into, then temperature is controlled at below 15 ℃ and stirs, add alkali then, be warmed up to 20～40 ℃ of placements again, broken behind the one-tenth glue, drying, pulverizing gets final product again.
9, the method for preparing the profile-controlling and plugging agent of claim 1 or 3, be characterised in that to comprise acrylamide monomers and vinylformic acid uniform mixing, the optional stopping composition that drops into water, stir the back and drop into alkali, be warmed up to 20～40 ℃ again, drop into methene base bisacrylamide, persulphate, be placed to glue after the stirring, broken then, drying, pulverizing gets final product.
10, each profile-controlling and plugging agent is used for the purposes of oil production in the claim 1～3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031375227A CN1333036C (en) | 2003-06-06 | 2003-06-06 | Pre-crosslinked granular plugging agent and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031375227A CN1333036C (en) | 2003-06-06 | 2003-06-06 | Pre-crosslinked granular plugging agent and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1552793A true CN1552793A (en) | 2004-12-08 |
| CN1333036C CN1333036C (en) | 2007-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031375227A Expired - Lifetime CN1333036C (en) | 2003-06-06 | 2003-06-06 | Pre-crosslinked granular plugging agent and its production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1333036C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298804C (en) * | 2005-10-18 | 2007-02-07 | 中国石油天然气股份有限公司 | Hydrophobic water-swelling profile control agent |
| CN101314710A (en) * | 2008-07-18 | 2008-12-03 | 中国石油大学(华东) | Foam regulating and displacing agent, oil displacement system and oil displacement method |
| CN101387190B (en) * | 2007-09-13 | 2012-08-15 | 廖中健 | Well killing method using absorbent resin to protect low pressure oil and gas reservoir |
| CN105062444A (en) * | 2015-08-07 | 2015-11-18 | 中国石油化工股份有限公司 | High temperature swellable granule plugging agent and preparation method thereof |
| CN106010491A (en) * | 2016-05-16 | 2016-10-12 | 中国石油化工股份有限公司 | Pre-crosslinking swellable profile control agent, preparation method and application |
| CN106381139A (en) * | 2016-08-17 | 2017-02-08 | 常熟理工学院 | A horizontal well selective water shutoff agent and a preparing method thereof |
| CN106634904A (en) * | 2016-11-10 | 2017-05-10 | 仇颖超 | Preparation method of high-temperature and high-salinity water shutoff agent special for oil well |
| CN107760291A (en) * | 2016-08-19 | 2018-03-06 | 中国石油天然气股份有限公司 | Weak gel compound clay profile control and flooding agent and preparation method thereof |
| CN108570196A (en) * | 2018-05-03 | 2018-09-25 | 南京思甲宁新材料科技有限公司 | The building mode of power cable |
| CN110229273A (en) * | 2019-07-17 | 2019-09-13 | 中国石油大学(北京) | A kind of deep electrical structure and its preparation method and application |
| CN110564393A (en) * | 2019-08-08 | 2019-12-13 | 大庆油田有限责任公司 | Micro-expansion type plugging agent and preparation method thereof |
| CN111777854A (en) * | 2020-07-23 | 2020-10-16 | 杭州每步材料科技有限公司 | Novel environment-friendly flame-retardant polyurethane grouting material and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1251856A (en) * | 1998-10-21 | 2000-05-03 | 石油勘探开发科学研究院采油工程研究所 | Usage of gel particles |
| CN1345907A (en) * | 2000-09-28 | 2002-04-24 | 唐山博亚科技工业开发有限责任公司 | Water plugging agent for petroleum well |
-
2003
- 2003-06-06 CN CNB031375227A patent/CN1333036C/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1298804C (en) * | 2005-10-18 | 2007-02-07 | 中国石油天然气股份有限公司 | Hydrophobic water-swelling profile control agent |
| CN101387190B (en) * | 2007-09-13 | 2012-08-15 | 廖中健 | Well killing method using absorbent resin to protect low pressure oil and gas reservoir |
| CN101314710A (en) * | 2008-07-18 | 2008-12-03 | 中国石油大学(华东) | Foam regulating and displacing agent, oil displacement system and oil displacement method |
| CN101314710B (en) * | 2008-07-18 | 2014-07-09 | 中国石油大学(华东) | Oil displacement profile control agent, displacement of reservoir oil system and displacement of reservoir oil method |
| CN105062444A (en) * | 2015-08-07 | 2015-11-18 | 中国石油化工股份有限公司 | High temperature swellable granule plugging agent and preparation method thereof |
| CN106010491A (en) * | 2016-05-16 | 2016-10-12 | 中国石油化工股份有限公司 | Pre-crosslinking swellable profile control agent, preparation method and application |
| CN106381139A (en) * | 2016-08-17 | 2017-02-08 | 常熟理工学院 | A horizontal well selective water shutoff agent and a preparing method thereof |
| CN106381139B (en) * | 2016-08-17 | 2019-03-29 | 常熟理工学院 | A kind of selective plugging agent for horizontal well and preparation method thereof |
| CN107760291A (en) * | 2016-08-19 | 2018-03-06 | 中国石油天然气股份有限公司 | Weak gel compound clay profile control and flooding agent and preparation method thereof |
| CN106634904A (en) * | 2016-11-10 | 2017-05-10 | 仇颖超 | Preparation method of high-temperature and high-salinity water shutoff agent special for oil well |
| CN108570196A (en) * | 2018-05-03 | 2018-09-25 | 南京思甲宁新材料科技有限公司 | The building mode of power cable |
| CN110229273A (en) * | 2019-07-17 | 2019-09-13 | 中国石油大学(北京) | A kind of deep electrical structure and its preparation method and application |
| CN110229273B (en) * | 2019-07-17 | 2020-08-04 | 中国石油大学(北京) | A kind of deep profile control agent and its preparation method and application |
| CN110564393A (en) * | 2019-08-08 | 2019-12-13 | 大庆油田有限责任公司 | Micro-expansion type plugging agent and preparation method thereof |
| CN110564393B (en) * | 2019-08-08 | 2022-06-10 | 大庆油田有限责任公司 | Micro-expansion type plugging agent and preparation method thereof |
| CN111777854A (en) * | 2020-07-23 | 2020-10-16 | 杭州每步材料科技有限公司 | Novel environment-friendly flame-retardant polyurethane grouting material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1333036C (en) | 2007-08-22 |
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Assignee: Daqing Wantong Chemical Factory Assignor: Wu Fengxiang Contract record no.: 2011230000287 Denomination of invention: Pre-crosslinked granular plugging agent and its production Granted publication date: 20070822 License type: Exclusive License Open date: 20041208 Record date: 20111014 |
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