CN105670596A - High-temperature-resistant automatic gel breaking type surfactant fracturing fluid - Google Patents
High-temperature-resistant automatic gel breaking type surfactant fracturing fluid Download PDFInfo
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- CN105670596A CN105670596A CN201610184764.XA CN201610184764A CN105670596A CN 105670596 A CN105670596 A CN 105670596A CN 201610184764 A CN201610184764 A CN 201610184764A CN 105670596 A CN105670596 A CN 105670596A
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- fracturing fluid
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- temperature resistant
- high temperature
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- 239000012530 fluid Substances 0.000 title claims abstract description 73
- 239000004094 surface-active agent Substances 0.000 title claims abstract description 38
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 30
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- -1 succinic acid fatty alcohol ester Chemical class 0.000 claims abstract description 17
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000019253 formic acid Nutrition 0.000 claims abstract description 15
- 239000001103 potassium chloride Substances 0.000 claims abstract description 15
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 10
- CKLJMWTZIZZHCS-UHFFFAOYSA-N D-OH-Asp Natural products OC(=O)C(N)CC(O)=O CKLJMWTZIZZHCS-UHFFFAOYSA-N 0.000 claims description 17
- 238000006471 dimerization reaction Methods 0.000 claims description 17
- KFKZOYYINITIPB-UHFFFAOYSA-N 4-tert-butylbenzoic acid;sodium Chemical compound [Na].CC(C)(C)C1=CC=C(C(O)=O)C=C1 KFKZOYYINITIPB-UHFFFAOYSA-N 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 abstract 1
- KTTMJIJHZNYOFB-UHFFFAOYSA-M sodium;4-tert-butylbenzoate Chemical compound [Na+].CC(C)(C)C1=CC=C(C([O-])=O)C=C1 KTTMJIJHZNYOFB-UHFFFAOYSA-M 0.000 abstract 1
- 239000001384 succinic acid Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Classifications
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
- C09K8/604—Polymeric surfactants
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/885—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Detergent Compositions (AREA)
Abstract
The invention relates to high-temperature-resistant automatic gel breaking type surfactant fracturing fluid. The high-temperature-resistant automatic gel breaking type surfactant fracturing fluid is characterized in that the fracturing fluid a mixture, and the mixture comprises, by weight, 0.6-5.5% of polyamino succinic acid fatty alcohol ester, 0.1-1.5% of sodium p-t-butylbenzoate, 2-4% of potassium chloride, 0.1-0.3% of formic acid and 92.2-95.6% of water. The high-temperature-resistant automatic gel breaking type surfactant fracturing fluid has the advantages that the high-temperature-resistant automatic gel breaking type surfactant fracturing fluid is easy to prepare, gel can be automatically broken, the temperature resistance of the high-temperature-resistant automatic gel breaking type surfactant fracturing fluid is higher than 130 DEG C, and the like.
Description
Technical field
The present invention relates to the fracturing fluid used in high temperature oil gas reservoir recovery process, be exactly a kind of high temperature resistant broken glue-type surfactant fracturing fluid automatically for high temperature oil gas well fracturing.
Background technology
Fracturing is the effective ways of oil-gas reservoir storey increase design, is the important measures of oil gas water well increasing yield and injection. One of outstanding feature of China's oil natural gas resource is that low osmoticing oil-gas layer distribution is wide, reserves are big, the resources supplIes of this objective reality determines fracturing as the first-selected measure produced in low permeability oil and gas field increasing the storage and effective ways, plays irreplaceable important function in the new oilfield prospecting developing of hyposmosis and in the volume increase production of old oil-and gas-field stable yields. And fracturing fluid is as one of the core of fracturing, its technical research and development receive much concern.
Since Schlumberger company develops the fracturing fluid (i.e. surfactant fracturing fluid) that thickening agent made by a kind of surfactant, owing to the type fracturing fluid is low to formation damage, the technical advantages such as environmental pollution is little, surface fracturing fluid system is of great interest. But, the temperature resistant capability of surfactant fracturing fluid is the maximum short slab of its application, from the most high-temperature resistant of bibliographical information surfactant fracturing fluid (except high molecular surfactant fracturing fluid) less than 120 DEG C. Apply from whole petroleum industry, owing to the temperature resistant capability of surfactant fracturing fluid is low, be difficult to prepare, cost intensive, be the main cause that is restricted of this system technology field popularization application. The present invention is directed to this problem, have developed a kind of novel easy preparation, can automatically break the surfactant fracturing fluid of glue, temperature resistant capability is more than 130 DEG C.
Summary of the invention
It is an object of the invention to: one provided by the invention is high temperature resistant automatic broken glue-type surfactant fracturing fluid, the feature such as there is easy preparation, can automatically break glue, temperature resistant capability more than 130 DEG C.
The technical scheme is that a kind of high temperature resistant broken glue-type surfactant fracturing fluid automatically, it is characterized in that: the mixture that this fracturing fluid is made up of 0.6-5.5% dimerization aminosuccinic acid aliphatic alcohol ester, 0.1-1.5% p-tert-butyl benzoic acid sodium, 2-4% potassium chloride, 0.1-0.3% formic acid and 92.2-95.6% water; Above-mentioned percent is mass percent.
The mixture that this fracturing fluid is made up of 3% dimerization aminosuccinic acid aliphatic alcohol ester, 1% p-tert-butyl benzoic acid sodium, 2% potassium chloride, 0.2% formic acid and 93.8% water; Above-mentioned percent is mass percent.
The preparation method of described a kind of high temperature resistant broken glue-type surfactant fracturing fluid automatically, it is characterized in that: first the potassium chloride of formula ratio is dissolved in the water of formula ratio, order adds dimerization aminosuccinic acid aliphatic alcohol ester and the p-tert-butyl benzoic acid sodium of formula ratio again, it is sufficiently stirred for, it is eventually adding the formic acid of formula ratio, stir.
Described fracturing fluid when temperature 130 DEG C, shear rate 170S-1 apparent viscosity more than 20mPa.s.
Described fracturing fluid is under 100 DEG C of-130 DEG C of conditions, and this fracturing fluid can break glue in 2-4 hour automatically, and fracturing fluid viscosity reduces to 5mPa.s.
The invention have the advantage that this fracturing fluid temperature at 130 DEG C or more than 130 DEG C time, shear rate 170S-1Under condition, apparent viscosity is more than 20mPa.s, therefore adopt this fracturing fluid can meet the temperature reservoirs more than 130 DEG C is carried out sand fracturing transformation take sand requirement. Under 100 DEG C of-130 DEG C of conditions, this fracturing fluid can break glue in 2-4 hour automatically, within fracturing fluid viscosity reduces to 5mPa.s, and after breaking gel without residue, completes the fracturing reform construction of temperature reservoirs. This fracturing fluid is by the fracturing fluid system that surfactant dimerization aminosuccinic acid aliphatic alcohol ester is master, compound additive is respectively provided with good water solublity, after particularly dimerization aminosuccinic acid aliphatic alcohol ester forms compacted shape micelle, there is good temperature resistant capability, and water soluble after breaking gel, therefore it is formed without residue, is conducive to improving correctional effect.
Below in conjunction with embodiment, the present invention is described in further detail, but not as a limitation of the invention.
Detailed description of the invention
Embodiment 1
A kind of high temperature resistant broken glue-type surfactant fracturing fluid, the mixture that this fracturing fluid is made up of the dimerization aminosuccinic acid aliphatic alcohol ester of 3kg, the p-tert-butyl benzoic acid sodium of 1kg, the potassium chloride of 2kg, the formic acid of 0.2kg and the water of 93.8kg automatically.
The preparation method of described a kind of high temperature resistant broken glue-type surfactant fracturing fluid automatically is: be first dissolved in the water of 93.8kg by 2kg potassium chloride, order adds the dimerization aminosuccinic acid aliphatic alcohol ester of 3kg and the p-tert-butyl benzoic acid sodium of 1kg again, it is sufficiently stirred for, it is eventually adding the formic acid of 0.2kg, stir.
The present invention prepares the viscoelastic high temperature resistant broken glue-type surfactant fracturing fluid automatically of formation as stated above at temperature 140 DEG C, shear rate 170S-1Under condition, apparent viscosity is more than 20mPa.s, therefore adopt this fracturing fluid can meet the temperature reservoirs to more than 130 DEG C carry out sand fracturing transformation take sand requirement. Under 140 DEG C of conditions, this fracturing fluid can break glue in 2-4 hour automatically, within fracturing fluid viscosity reduces to 5mPa.s, and after breaking gel without residue, completes the fracturing reform construction of temperature reservoirs.
Embodiment 2
A kind of high temperature resistant broken glue-type surfactant fracturing fluid, the mixture that this fracturing fluid is made up of 0.6kg dimerization aminosuccinic acid aliphatic alcohol ester, 0.1kg p-tert-butyl benzoic acid sodium, 3.6kg potassium chloride, 0.1kg formic acid and 95.6kg water automatically.
The preparation method of described a kind of high temperature resistant broken glue-type surfactant fracturing fluid automatically is: be first dissolved in the water of 95.6kg by 3.6kg potassium chloride, order adds the dimerization aminosuccinic acid aliphatic alcohol ester of 0.6kg and the p-tert-butyl benzoic acid sodium of 0.1kg again, it is sufficiently stirred for, it is eventually adding the formic acid of 0.1kg, stir.
The present invention prepares the viscoelastic high temperature resistant broken glue-type surfactant fracturing fluid automatically of formation as stated above at temperature 130 DEG C, shear rate 170S-1Under condition, apparent viscosity is more than 20mPa.s, therefore adopt this fracturing fluid can meet the temperature reservoirs to 130 DEG C carry out sand fracturing transformation take sand requirement. Under 100 DEG C of-130 DEG C of conditions, this fracturing fluid can break glue in 2-4 hour automatically, within fracturing fluid viscosity reduces to 5mPa.s, and after breaking gel without residue, completes the fracturing reform construction of temperature reservoirs.
Embodiment 3
A kind of high temperature resistant broken glue-type surfactant fracturing fluid, the mixture that this fracturing fluid is made up of the dimerization aminosuccinic acid aliphatic alcohol ester of 2kg, the p-tert-butyl benzoic acid sodium of 1.5kg, the potassium chloride of 4kg, the formic acid of 0.3kg and the water of 92.2kg automatically.
The preparation method of described a kind of high temperature resistant broken glue-type surfactant fracturing fluid automatically is: be first dissolved in the water of 92.2kg by 4kg potassium chloride, order adds the dimerization aminosuccinic acid aliphatic alcohol ester of 2kg and the p-tert-butyl benzoic acid sodium of 1.5kg again, it is sufficiently stirred for, it is eventually adding the formic acid of 0.3kg, stir.
The present invention prepares the viscoelastic high temperature resistant broken glue-type surfactant fracturing fluid automatically of formation as stated above at temperature 130 DEG C, shear rate 170S-1Under condition, apparent viscosity is more than 20mPa.s, therefore adopt this fracturing fluid can meet the temperature reservoirs to 130 DEG C carry out sand fracturing transformation take sand requirement. Under 100 DEG C of-130 DEG C of conditions, this fracturing fluid can break glue in 2-4 hour automatically, within fracturing fluid viscosity reduces to 5mPa.s, and after breaking gel without residue, completes the fracturing reform construction of temperature reservoirs.
Embodiment 4
Embodiment 3 simultaneously, it is a difference in that: a kind of high temperature resistant broken glue-type surfactant fracturing fluid, the mixture that this fracturing fluid is made up of the dimerization aminosuccinic acid aliphatic alcohol ester of 5.5kg, the p-tert-butyl benzoic acid sodium of 0.1kg, the potassium chloride of 2kg, the formic acid of 0.1kg and the water of 92.3kg automatically.
Embodiment 5
Broken glue-type surfactant fracturing fluid scene application automatically that the present invention is high temperature resistant:
The first step: first 2-4% potassium chloride is dissolved in 92.2-95.6% water, order adds 0.6-5.5% dimerization aminosuccinic acid aliphatic alcohol ester and 0.1-1.5% p-tert-butyl benzoic acid sodium again, it is sufficiently stirred for, it is eventually adding 0.1-0.3% formic acid, stir, form viscoelastic high temperature resistant broken glue-type surfactant fracturing fluid automatically; Above-mentioned percent is mass percent;
Second step: the high temperature resistant broken glue-type surfactant fracturing fluid automatically after preparation uniformly is passed into fracturing blender truck;
3rd step: carry out sand fracturing operation;
4th step: fracturing work adds after sand terminates 2-4 hour, waits high temperature resistant broken glue-type surfactant fracturing fluid automatically automatically after breaking gel, the row's of returning residual liquid;
5th step: construction terminates.
Raw material in the present invention all directly can be buied from market, and wherein, dimerization aminosuccinic acid aliphatic alcohol ester and p-tert-butyl benzoic acid sodium can also be buied from petroleum works Technology Co., Ltd. of Shaanxi friendly nation.
The part that the present embodiment does not describe in detail belongs to the known general knowledge of the industry, may search on the net, does not describe one by one here.
Claims (5)
1. a high temperature resistant broken glue-type surfactant fracturing fluid automatically, is characterized in that: the mixture that this fracturing fluid is made up of 0.6-5.5% dimerization aminosuccinic acid aliphatic alcohol ester, 0.1-1.5% p-tert-butyl benzoic acid sodium, 2-4% potassium chloride, 0.1-0.3% formic acid and 92.2-95.6% water; Above-mentioned percent is mass percent.
2. the high temperature resistant broken glue-type surfactant fracturing fluid automatically of one according to claim 1, is characterized in that: the mixture that this fracturing fluid is made up of 3% dimerization aminosuccinic acid aliphatic alcohol ester, 1% p-tert-butyl benzoic acid sodium, 2% potassium chloride, 0.2% formic acid and 93.8% water; Above-mentioned percent is mass percent.
3. the preparation method of a kind of high temperature resistant broken glue-type surfactant fracturing fluid automatically according to claim 1, it is characterized in that: first the potassium chloride of formula ratio is dissolved in the water of formula ratio, order adds dimerization aminosuccinic acid aliphatic alcohol ester and the p-tert-butyl benzoic acid sodium of formula ratio again, it is sufficiently stirred for, it is eventually adding the formic acid of formula ratio, stir.
4. the high temperature resistant automatically broken glue-type surfactant fracturing fluid of one according to claim 1, is characterized in that: described fracturing fluid when temperature 130 DEG C, shear rate 170S-1 apparent viscosity more than 20mPa.s.
5. the high temperature resistant broken glue-type surfactant fracturing fluid automatically of one according to claim 1, is characterized in that: described fracturing fluid is under 100 DEG C of-130 DEG C of conditions, and this fracturing fluid can break glue in 2-4 hour automatically, and fracturing fluid viscosity reduces to 5mPa.s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610184764.XA CN105670596B (en) | 2016-03-29 | 2016-03-29 | A kind of high temperature resistant breaks glue-type surfactant fracturing fluid automatically |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610184764.XA CN105670596B (en) | 2016-03-29 | 2016-03-29 | A kind of high temperature resistant breaks glue-type surfactant fracturing fluid automatically |
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| Publication Number | Publication Date |
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| CN105670596A true CN105670596A (en) | 2016-06-15 |
| CN105670596B CN105670596B (en) | 2018-09-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099278A (en) * | 2017-04-14 | 2017-08-29 | 咸阳万众生物科技有限公司 | A kind of clean fracturing fluid graininess filtrate reducing material and its preparation and application |
| CN115594385A (en) * | 2021-07-09 | 2023-01-13 | 北京中科润金环保工程股份有限公司（Cn） | High-temperature high-activity gel breaker for waste slurry treatment |
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| CN102220861A (en) * | 2011-05-06 | 2011-10-19 | 中国石油天然气股份有限公司 | Acid esters coordination directional glue crushing method |
| CN103173201A (en) * | 2013-01-25 | 2013-06-26 | 北京晟辉兴业科技有限公司 | High temperature resistant clean fracturing fluid |
| CN103865511A (en) * | 2012-12-11 | 2014-06-18 | 中国石油天然气股份有限公司 | Visco-elastic surfactant fracturing fluid, and preparation method and application thereof |
| CN105080424A (en) * | 2015-09-02 | 2015-11-25 | 西南石油大学 | Cationic viscoelastic surfactant and preparation and application thereof |
| CN105199704A (en) * | 2015-10-15 | 2015-12-30 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gel breaker for clean fracturing fluid and application method of gel breaker |
-
2016
- 2016-03-29 CN CN201610184764.XA patent/CN105670596B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220861A (en) * | 2011-05-06 | 2011-10-19 | 中国石油天然气股份有限公司 | Acid esters coordination directional glue crushing method |
| CN103865511A (en) * | 2012-12-11 | 2014-06-18 | 中国石油天然气股份有限公司 | Visco-elastic surfactant fracturing fluid, and preparation method and application thereof |
| CN103173201A (en) * | 2013-01-25 | 2013-06-26 | 北京晟辉兴业科技有限公司 | High temperature resistant clean fracturing fluid |
| CN105080424A (en) * | 2015-09-02 | 2015-11-25 | 西南石油大学 | Cationic viscoelastic surfactant and preparation and application thereof |
| CN105199704A (en) * | 2015-10-15 | 2015-12-30 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gel breaker for clean fracturing fluid and application method of gel breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099278A (en) * | 2017-04-14 | 2017-08-29 | 咸阳万众生物科技有限公司 | A kind of clean fracturing fluid graininess filtrate reducing material and its preparation and application |
| CN115594385A (en) * | 2021-07-09 | 2023-01-13 | 北京中科润金环保工程股份有限公司（Cn） | High-temperature high-activity gel breaker for waste slurry treatment |
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Application publication date: 20160615 Assignee: Heilongjiang Lvcheng Environmental Protection Technology Co.,Ltd. Assignor: XIANYANG WANZHONG BIOTECHNOLOGY Co.,Ltd. Contract record no.: X2021980000289 Denomination of invention: A high temperature resistant surfactant fracturing fluid with automatic gel breaking Granted publication date: 20180907 License type: Exclusive License Record date: 20210112 |
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Denomination of invention: A high temperature resistant automatic gel breaking surfactant fracturing fluid Effective date of registration: 20220207 Granted publication date: 20180907 Pledgee: Bank of Kunlun Limited by Share Ltd. Xi'an branch Pledgor: XIANYANG WANZHONG BIOTECHNOLOGY Co.,Ltd. Registration number: Y2022980001404 |
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Date of cancellation: 20221024 Granted publication date: 20180907 Pledgee: Bank of Kunlun Limited by Share Ltd. Xi'an branch Pledgor: XIANYANG WANZHONG BIOTECHNOLOGY Co.,Ltd. Registration number: Y2022980001404 |
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Denomination of invention: A high temperature resistant automatic gel breaking surfactant fracturing fluid Effective date of registration: 20221028 Granted publication date: 20180907 Pledgee: Bank of Kunlun Limited by Share Ltd. Xi'an branch Pledgor: XIANYANG WANZHONG BIOTECHNOLOGY Co.,Ltd. Registration number: Y2022610000683 |