CN102167970B - Low-density bound water well fluid - Google Patents
Low-density bound water well fluid Download PDFInfo
- Publication number
- CN102167970B CN102167970B CN 201010115449 CN201010115449A CN102167970B CN 102167970 B CN102167970 B CN 102167970B CN 201010115449 CN201010115449 CN 201010115449 CN 201010115449 A CN201010115449 A CN 201010115449A CN 102167970 B CN102167970 B CN 102167970B
- Authority
- CN
- China
- Prior art keywords
- water
- density
- component
- fluid
- less
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000012530 fluid Substances 0.000 title claims abstract description 44
- 239000004094 surface-active agent Substances 0.000 claims abstract description 15
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002250 absorbent Substances 0.000 claims abstract description 5
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229940073608 benzyl chloride Drugs 0.000 claims abstract description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- 150000002892 organic cations Chemical class 0.000 claims description 8
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000013543 active substance Substances 0.000 claims description 3
- OPRIWFSSXKQMPB-UHFFFAOYSA-N 2-methyl-2-(prop-2-enoylamino)propane-1-sulfonic acid;sodium Chemical compound [Na].OS(=O)(=O)CC(C)(C)NC(=O)C=C OPRIWFSSXKQMPB-UHFFFAOYSA-N 0.000 claims description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 abstract description 8
- ITVXXFGORWKKRI-TYYBGVCCSA-N C(C=C)(=O)O.P/C(/C(=O)O)=C/C(=O)O Chemical compound C(C=C)(=O)O.P/C(/C(=O)O)=C/C(=O)O ITVXXFGORWKKRI-TYYBGVCCSA-N 0.000 abstract description 8
- 229920000642 polymer Polymers 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 abstract description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 2
- 239000003093 cationic surfactant Substances 0.000 abstract 2
- 229920001903 high density polyethylene Polymers 0.000 abstract 2
- 239000004700 high-density polyethylene Substances 0.000 abstract 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- FWFUWXVFYKCSQA-UHFFFAOYSA-M sodium;2-methyl-2-(prop-2-enoylamino)propane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(C)(C)NC(=O)C=C FWFUWXVFYKCSQA-UHFFFAOYSA-M 0.000 abstract 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 9
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 239000004160 Ammonium persulphate Substances 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 235000019395 ammonium persulphate Nutrition 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 101100008048 Caenorhabditis elegans cut-4 gene Proteins 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- PBIMIGNDTBRRPI-UHFFFAOYSA-N trifluoro borate Chemical compound FOB(OF)OF PBIMIGNDTBRRPI-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Landscapes
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a high-density polyethylene glycol terephthalate (HDPE) with the density of 1.00g/cm3-1.01g/cm3Low density bound hydraulic well fluid in between; comprises the following components in parts by weight of 150 portions of A component and 200 portions of B component: the component A comprises the following components in percentage by weight: 0.02-0.05% of fluorine-containing surfactant, 1.0-1.5% of organic cationic surfactant, 0.003-0.005% of phosphino maleic acid-acrylic acid copolymer and the balance of water; the component B is a water-absorbent resin polymer; the organic cationic surfactant is prepared by the reaction of equimolar benzyl chloride and trimethylamine; the water-absorbent resin polymer is a polymer of acrylic acid, acrylamide and 2-acrylamido-2-methylpropanesulfonic acid sodium salt; the free water is less than or equal to 5 percent of well killing fluid; at 170S-1The viscosity reduction value is less than or equal to 5 percent after the lower shearing is carried out for 4 hours; can resist 135 ℃ and is suitable for wells with the formation pressure coefficient less than or equal to 0.97MPa/100 m.
Description
Technical field
The density that the present invention relates to a kind of time protection reservoir that is applicable to low pressure oil gas well kill-job (well workover) operation is at 1.00g/cm
3-1.01g/cm
3Between low density irreducible water well control fluid.
Background technology
Domestic at present a large amount of aq. type kill-job workover fluids that adopt have three types of the follow-on kill-job workover fluid of mud, polymeric solid phase salt solution kill-job workover fluid and solid free brine kill-job workover fluids.Wherein the follow-on kill-job workover fluid of mud is because solid load is high, and big relatively to formation damage, use in recent years reduces.The advantage of polymeric solid phase salt solution kill-job workover fluid is that the leak-off on entering stratum is few, and the band grittiness can be good, but existing crack is had hole, the heterogeneous low porosity and low permeability of structure stratum again, and solid phase injures greatly, and water blocking damage is serious, is not easy the row of returning.Solid free brine kill-job workover fluid is chosen and has been used in therefore a lot of oil fields, and this kill-job workover fluid is divided into a variety of: mainly contain organic salt salt solution workover fluid, active water workover fluid and positively charged ion workover fluid.The maximum characteristics of these kill-job workover fluids are that the row of returning is easy; And shortcoming is: leak-off is big, big to formation damage; Particularly clay content is than higher well, and water blocking damage is serious, causes clay swelling, corrosion simultaneously and meet with local water to produce dirt and stop up problem such as stratum.
Summary of the invention
The purpose of this invention is to provide a kind of low density irreducible water well control fluid, it is that in water, to add the formulated density in solidifying agent (polymkeric substance) back be 1.00g/cm
3-1.01g/cm
3Flow, do not have free water produce, can irreducible water, a kind of well control fluid of the not dehydration that is squeezed.
Low density irreducible water well control fluid of the present invention is made up of for 1 part A composition 150-200 part and B composition by weight:
(1) the A composition is made up of following composition by weight percentage
Fluorochemical surfactant 0.02-0.05%
Organic cation tensio-active agent 1.0%-1.5%
Phosphino-maleic acid-acrylic acid copolymer 0.003%-0.005%
Water surplus
(2) the B composition is the absorbent resin polymkeric substance
The fluorochemical surfactant that in water, adds weight 0.02-0.05% reduces the surface tension of well control fluid, makes water surface tension less than 22mN/m.Fluorochemical surfactant is 2,2,3 of Shanghai Zhongke Hechen Co., Ltd.'s production, the 3-tetrapion.
The organic cation tensio-active agent that adds entry weight 1.0%-1.5% prevents clay swelling as anti-clayswelling agent, and it is to be formed by equimolar Benzyl Chloride and Trimethylamine 99 reaction to the anti-swollen rate that makes this liquid water greater than 80% (centrifuging),
Concrete synthesis step is:
1). the Trimethylamine 99 179.1kg that adds 33% concentration in the reaction kettle of condensing works is housed on the opening, stirs, be warming up to 20-30 ℃ (annotate, if Trimethylamine 99 not because temperature do not cross and lowly produce deposition then when dripping Benzyl Chloride, just begin heating);
2). in Agitation Tank, adding 126.6kg content is the Benzyl Chloride more than 99%; Be added dropwise to then in the reaction kettle that is placed with Trimethylamine 99 of above-mentioned stirring; The speed that drips is carried out with the speed that 10-15min drips; If too fast then Trimethylamine 99 boiling in the still that possibly induce reaction, even overflow (reaction is thermopositive reaction);
3). be warming up to (50-60) ℃ reaction 30-60min after dripping;
4). above-mentioned reactant is concentrated down at 95-120 ℃, wait and take advantage of heat release liquid, cooling then when being concentrated to a large amount of crystal generations and liquid retrogradation.
5). get 10 parts of said product by weight, put into kneader, the trifluoro borate ether that adds 2 parts is then mediated, is pulverized and mix, and obtains final anti-clayswelling agent product.
The phosphino-maleic acid-acrylic acid copolymer scale inhibitor that adds entry weight 0.003%-0.005% prevents the meet formation of back dirt of well control fluid and local water; Foreignize the like product of the GY-317 of factory by new glad chemical plant, Tianjin or Changzhou profit.Or prolong is being housed, TM is in five there-necked flasks of whisking appliance; Respectively with 9.02g maleic anhydride and 26.5g vinylformic acid, put into flask (its vinylformic acid and maleic anhydride monomer mass ratio were respectively 85: 15) earlier, put into 42g water again; Stir down at 70 ℃, fully the dissolving back slowly drips the mixing solutions of 10.14g inferior sodium phosphate and ammonium persulphate 10.07g, after dripping; 90 ℃ of reactions 4 hours, obtain lurid phosphino-maleic acid-acrylic acid copolymer clear solution.Industrial products amplify in this ratio synchronously.
In 150-200 part A component liquids, add 1 part of resinous polymer at last with high-hydroscopicity.
The resinous polymer of high-hydroscopicity adopts aqueous solution polymerization method with N; The N-methylene-bisacrylamide is a linking agent; With ammonium persulphate, sodium sulfite anhy 96 is initiator; With vinylformic acid and acrylic amide and 2-acrylamido-2 methyl propane sulfonic acid sodium is monomer, synthetic resinous polymer with high-hydroscopicity.
Stir, being mixed with density is 1.00g/cm
3-1.01g/cm
3Flow but do not have that free water produces, irreducible water, flowable resin, and the well control fluid of the not dehydration that is squeezed.This well control fluid has the good flowability and the ability of extraordinary irreducible water.Its performance is: high sodified water ability.The water of the ability weight of constraint more than 150 times own does not make it free.Has certain intensity.Its free-water of irreducible water well control fluid of configuration is not more than whole well control fluid 5%; Anti-shearing is at 170S
-1Down cut 4 hours, its viscosity drop low value is less than 5%; Can anti-ly be up to 135 ℃, suitable reservoir pressure coefficient is less than or equal to the well of 0.97MPa/100m.7MPa, 85 ℃ down with drilling fluid filter press mensuration 30min dehydration less than whole well control fluid 10%, high temperature resistance, resistance to compression, steady time is long.Can be anti-130 ℃.The row of returning smoothly.The scene is prone to join.Gas well output returns to preceding more than 85% of ordinary production output recently of operation.
Embodiment
Embodiment 1:
The fluorochemical surfactant that in 100 kg of water, adds 0.02 kilogram; 1.0 the organic cation face surface-active agent of kilogram; 0.003 the phosphino-maleic acid-acrylic acid copolymer (being dissolved in water) of kilogram adds 0.5 kilogram of irreducible water then and uses polymkeric substance, fully stirs; Place the irreducible water well control fluid that 30min must prepare, actual disposition is amplified in this ratio in proportion.
The performance of workover fluid: density: 1.01g/cm
3, surface tension: 22mN/m, anti-swollen rate: 81.2%, the dehydration in following 30 minutes of 0.7Mpa pressure is less than 9.5% of well control fluid; Steady time>=30 day at room temperature are 130 ℃ of following steady time>=3 day.Carry out rig-site utilization at basin 5 wells.
Embodiment 2:
The fluorochemical surfactant that in 100 kg of water, adds 0.05 kilogram; 1.5 the organic cation face surface-active agent of kilogram; 0.005 the phosphino-maleic acid-acrylic acid copolymer (being dissolved in water) of kilogram adds 0.666 kilogram of irreducible water then and uses polymkeric substance, fully stirs; Place the irreducible water well control fluid that 30min must prepare, actual disposition is amplified in this ratio in proportion.
The performance of workover fluid: density: 1.02g/cm
3, surface tension: 19mN/m, anti-swollen rate: 85.6%, the dehydration in following 30 minutes of 0.7Mpa pressure is less than 6.1% of well control fluid; Steady time>=30 day at room temperature are 130 ℃ of following steady time>=3 day.Gas reservoir platform 20 wells carry out rig-site utilization in the horse village.
Embodiment 3:
The fluorochemical surfactant that in 100 kg of water, adds 0.03 kilogram; 1.5 the organic cation face surface-active agent of kilogram; 0.004 the phosphino-maleic acid-acrylic acid copolymer (being dissolved in water) of kilogram adds 0.6 kilogram of irreducible water then and uses polymkeric substance, fully stirs; Place the irreducible water well control fluid that 30min must prepare, actual disposition is amplified in this ratio in proportion.
The performance of workover fluid: density: 1.02g/cm
3, surface tension: 21mN/m, anti-swollen rate: 85.1%, the dehydration in following 30 minutes of 0.7Mpa pressure is less than 7.9% of well control fluid; Steady time>=30 day at room temperature are 130 ℃ of following steady time>=3 day.Carry out rig-site utilization at 581 wells.
Embodiment 4:
The fluorochemical surfactant that in 100 kg of water, adds 0.04 kilogram; 1.2 the organic cation face surface-active agent of kilogram adds 0.55 kilogram of irreducible water then and uses polymkeric substance, fully stirs; Place the irreducible water well control fluid that 30min must prepare, actual disposition is amplified in this ratio in proportion.
The performance of workover fluid: density: 1.02g/cm
3, surface tension: 20mN/m, anti-swollen rate: 83.3%, the dehydration in following 30 minutes of 0.7Mpa pressure is less than 8.7% of well control fluid; Steady time>=30 day at room temperature are 130 ℃ of following steady time>=3 day.Carry out rig-site utilization at 256 Jing Jing.
Embodiment 5:
The fluorochemical surfactant that in 100 kg of water, adds 0.04 kilogram; 1.3 the organic cation face surface-active agent of kilogram; 0.003 the phosphino-maleic acid-acrylic acid copolymer (being dissolved in water) of kilogram adds 0.65 kilogram of irreducible water then and uses polymkeric substance, fully stirs; Place the irreducible water well control fluid that 30min must prepare, actual disposition is amplified in this ratio in proportion.
The performance of workover fluid: density: 1.02g/cm
3, surface tension: 19mN/m, anti-swollen rate: 84.0%, the dehydration in following 30 minutes of 0.7Mpa pressure is less than 6.8% of well control fluid; Steady time>=30 day at room temperature are 130 ℃ of following steady time>=3 day.57,218 five mouthfuls of wells carry out rig-site utilization in 53 Sector Easts.
Claims (1)
1. low density irreducible water well control fluid, density is at 1.00g/cm
3-1.01g/cm
3Between, it is characterized in that: form for 1 part by A composition 150-200 part and B composition by weight:
(1) the A composition is made up of following composition by weight percentage
(2) the B composition is the absorbent resin polymkeric substance;
Fluorochemical surfactant is 2,2,3, the 3-tetrapion;
The organic cation tensio-active agent is for being formed by equimolar Benzyl Chloride and Trimethylamine 99 reaction;
The absorbent resin polymkeric substance is the polymkeric substance of vinylformic acid, acrylic amide and 2-acrylamido-2-methyl propane sulfonic acid sodium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010115449 CN102167970B (en) | 2010-02-26 | 2010-02-26 | Low-density bound water well fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010115449 CN102167970B (en) | 2010-02-26 | 2010-02-26 | Low-density bound water well fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102167970A CN102167970A (en) | 2011-08-31 |
| CN102167970B true CN102167970B (en) | 2012-12-12 |
Family
ID=44489289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010115449 Active CN102167970B (en) | 2010-02-26 | 2010-02-26 | Low-density bound water well fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102167970B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104910880A (en) * | 2015-04-21 | 2015-09-16 | 西南石油大学 | Leak stopping high-density bound water well killing fluid |
| CN107255020B (en) * | 2017-06-14 | 2019-08-30 | 中国石油集团渤海钻探工程有限公司 | A kind of workover fluid dehydration liquid and its dewatering for solidifying water |
| CN108467719A (en) * | 2018-04-28 | 2018-08-31 | 西南石油大学 | A kind of preparation with sterilization and the water filling clay expansion-resisting agent of anti-scaling action |
| CN109456750A (en) * | 2018-12-21 | 2019-03-12 | 中国石油集团渤海钻探工程有限公司 | Environment-friendly type coiled tubing drag reducer |
| CN111647394A (en) * | 2020-06-22 | 2020-09-11 | 保定市三拓化工产品有限公司 | Preparation method of small cation shale inhibitor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6613720B1 (en) * | 2000-10-13 | 2003-09-02 | Schlumberger Technology Corporation | Delayed blending of additives in well treatment fluids |
| CN1526788A (en) * | 2003-09-25 | 2004-09-08 | 山东师范大学 | Negative pressure well fluid for oil well repairing operation and its prepn |
| CN101555404A (en) * | 2009-05-20 | 2009-10-14 | 大庆开发区东油新技术有限公司 | Environment-friendly low-damage solidfree well control fluid and applications thereof |
-
2010
- 2010-02-26 CN CN 201010115449 patent/CN102167970B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6613720B1 (en) * | 2000-10-13 | 2003-09-02 | Schlumberger Technology Corporation | Delayed blending of additives in well treatment fluids |
| CN1526788A (en) * | 2003-09-25 | 2004-09-08 | 山东师范大学 | Negative pressure well fluid for oil well repairing operation and its prepn |
| CN101555404A (en) * | 2009-05-20 | 2009-10-14 | 大庆开发区东油新技术有限公司 | Environment-friendly low-damage solidfree well control fluid and applications thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102167970A (en) | 2011-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102167970B (en) | Low-density bound water well fluid | |
| CN101121880B (en) | Natural macromolecule modified starch profile control agent for oil field | |
| CN102051160B (en) | High-density bound water well fluid | |
| CN102504794B (en) | Hydrophobically associating polymer and mixed surfactant binary compound oil displacement system | |
| CA2920932C (en) | Cationic copolymer and use thereof in lost circulation additive | |
| CN104387530A (en) | Preparation method of high-content calcium bentonite water shutoff agent | |
| CN102358771B (en) | Temperature resistant, non-crosslinked and biodegradable gel leak-stopping agent and preparation method thereof | |
| CN103421137B (en) | The preparation method of high temperature resistance polyacrylamide for oil displacement | |
| CN102127189A (en) | Polyacrylamide microgel as well as preparation method and application thereof | |
| CN104231168A (en) | Polymer microsphere temporary plugging agent with ultralow interfacial tension and preparation method thereof | |
| CN104403058A (en) | Latex plugging agent for drilling fluid and preparation method thereof | |
| CN102352232A (en) | Temperature-resistant and salt-resistant polymer clean fracturing fluid thickening agent and preparation method thereof | |
| CN103184035B (en) | A kind of polymer for drilling fluid oil layer protective agent and preparation method | |
| CN103409120A (en) | Polymer nano intercalation composite material plugging agent and preparation method and application thereof | |
| CN105367707A (en) | Drilling fluid high-temperature-resistant polymer filtrate reducer and applications thereof | |
| CN104910880A (en) | Leak stopping high-density bound water well killing fluid | |
| CN103044618A (en) | Method for preparing alkali-resistant water-absorbent resin suitable for oil well cement paste | |
| CN104263329A (en) | High-temperature resistant and salt-tolerance filtrate reducer for drilling fluid and preparation method thereof | |
| CN102533235B (en) | Medium high temperature early strength agent for oil well cement | |
| CN104528902A (en) | Novel polymeric aluminum chloride dephosphorizing filler and preparation method thereof | |
| CN103923257A (en) | Compound super absorbent resin and preparation method thereof | |
| CN104649606B (en) | A kind of compound water reducer of high-efficiency environment friendly | |
| CN101948275B (en) | Quick sea coating mud consolidation agent | |
| CN106589233B (en) | A kind of preparation method of heat and salinity tolerance reversed-phase emulsion drag reducer | |
| CN102827590A (en) | High-efficiency semi-permeable membrane inhibitor for drilling fluid and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |