CN103881692A - Low-temperature fracturing fluid - Google Patents
Low-temperature fracturing fluid Download PDFInfo
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- CN103881692A CN103881692A CN201410094505.9A CN201410094505A CN103881692A CN 103881692 A CN103881692 A CN 103881692A CN 201410094505 A CN201410094505 A CN 201410094505A CN 103881692 A CN103881692 A CN 103881692A
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- fracturing liquid
- low temperature
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- temperature fracturing
- boric acid
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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
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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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
- C09K8/605—Compositions for stimulating production by acting on the underground formation containing biocides
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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
- C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—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
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
- C09K8/905—Biopolymers
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Abstract
The invention relates to a low-temperature fracturing fluid which is prepared by the following steps: dissolving 0-0.2 part of peroxide and 0-0.5 part of reducing agent by less than or equal to 20 parts of clean water, then, adding 0.03-20.0 parts of borate, and uniformly mixing to prepare a crosslinking solution; preparing a basic solution by the rest of 99.82-70.5 parts of clean water for preparing the crosslinking agent, 0.15-0.8 part of hybrid fenugreed gum powder, 0-1.0 part of crude oil demulsifier, 0-2.0 parts of clean up additive, 0-2.0 parts of foaming agent, 0-1.0 part of bactericide and 0-2.0 parts of clay stabilizer; then, mixing the crosslinking solution with the basic solution in proportion to form the fracturing fluid.
Description
technical field
The present invention relates to a kind ofly for the low temperature Oil/gas Well fracturing liquid that (comprising shale gas and coal-seam gas), fracturing yield increasing technique was used, is that to hybridize Semen Trigonellae rubber powder be a kind of low temperature fracturing liquid that thickening material, boric acid ester are linking agent specifically.
Background technology
In well fracturing transformation process, the fracturing liquid that prior art is used is mainly the high viscosity elasticity fracturing liquid taking macromolecule plant glue (as guar gum and derivative thereof) as thickening material, to have enough viscosity and good anti-shear performance, carry propping agent and enter stratum and realize supporting crack to realize.Fracturing liquid must break glue and become low-viscosity (mobile) liquid after pressing crack construction finishes, and drains into ground so that liquid can return smoothly, for in-place oil and Sweet natural gas are vacateed passage.
And the method that makes fracturing liquid rubber-breaking that prior art adopts is mainly the broken glue method of chemical oxidation and biological degradation method.
Biological degradation method adopts biological enzyme technology, destroys macromolecule polysaccharide in plant gum fracturing fluid by specific enzyme, makes thickening material polymer be degraded to low molecule and realizes brokenly glue.But biological enzyme is high on storage condition requirement, affected greatly by field condition, is difficult to reach the effect in laboratory when practical application; And cost is high, thereby be restricted in actual applications.
The broken glue method of chemical oxidation mainly adopts persulphate, as ammonium persulphate, Sodium Persulfate, decomposes at the certain temperature in stratum by persulphate discharge oxygen and in to thickening material macromolecule polysaccharide produce degraded, realize and break glue.
The broken glue method of chemical oxidation is the most frequently used, the effective means of the plant gum fracturing fluid taking macromolecule plant glue as thickening material at present.But persulphate exists an outstanding feature to be: the decomposition rate of all persulphates, the impact that rate of decomposition is subject to temperature, when temperature is during lower than 45 DEG C, the very big amplitude of the decomposition rate of persulphate and rate of decomposition declines.Therefore,, in the low temperature Oil/gas Well transformation lower than below 45 DEG C, rely on separately the broken glue of persulphate cannot reach the requirement of fracturing liquid rubber-breaking.In order to improve the broken glue under cold condition, adopt and add reductive agent both at home and abroad, as S-WAT, Sodium Pyrosulfite improve persulphate releasability at low temperatures, and strengthen the consumption of persulphate.But even so,, in temperature, lower than below 30 DEG C time, this means still cannot reach the requirement of fracturing liquid rubber-breaking.
And persulphate is acidic substance, strengthening consumption can be cross-linked and viscosity generation detrimentally affect of the fracturing fluid, and in fracturing process, is reducing all the time of the fracturing fluid viscosity, affects the reliability of construction.In addition, the fracturing liquid of the broken glue of this dependence persulphate, the filter cake forming in low temperature formation and around concentrated solution can not break glue or only have the broken glue of part, in the supporting crack of stratum, easy residual polymer, causes serious pollution to supporting crack.
Summary of the invention
The object of the present invention is to provide a kind of taking hybridization Semen Trigonellae rubber powder as thickening material, boric acid ester is the low temperature fracturing liquid of linking agent.
Special character of the present invention is:
1, the present invention adopts a kind of hybridization combination of fenugreek gum and derivative thereof, this hybridization combination of fenugreek gum derives from the endosperm of the hybridization product taking Semen Trigonellae as female parent, taking guar-bean as male parent, its good characteristic, molecular weight that combines combination of fenugreek gum and guar gum is between 2 × 105-3 × 105, and its molecular structural formula is:
Wherein n value is: 100≤n≤150
2, the boric acid ester that the present invention adopts boric acid and poly-hydroxy organism to form is linking agent, and linking agent can progressively be hydrolyzed and discharge acidic substance to reduce of the fracturing fluid pH value after the crosslinked fracturing liquid of alkalescence enters stratum, makes boron cross-linking system weaken or destroy.Meanwhile, the present invention, by utilizing calcium ions and magnesium ions and thickening material in stratum to form plane, non-netted complexing, repels the cross-linked network effect of boron and thickening material; Along with linking agent hydrolysis in fracturing liquid weakens the crosslinked action of the reduction of of the fracturing fluid pH value, boron and thickening material, the complex ability of calcium magnesium is greater than gradually the crosslinked action of boron and replaces boron and being cross-linked of thickening material.Can complete of the fracturing fluid broken glue by the effect of this two aspect.
For achieving the above object, the technical solution used in the present invention is:
A kind of low temperature fracturing liquid, is characterized in that: this low temperature fracturing liquid is the mixture with following composition and weight part:
Clear water: 99.82～70.5 parts
Hybridization Semen Trigonellae rubber powder: 0.15～0.8 part
Boric acid ester: 0.03～20.0 part
Crude oil demulsifier: 0～1.0 part
Cleanup additive: 0～2.0 part
Pore forming material: 0～2.0 part
Sterilant: 0～1.0 part
Clay stabilizer: 0～2.0 part
0～0.2 part of superoxide
0～0.5 part of reductive agent
Its production process is:
1, the preparation of crosslinked fluid:
With the clear water that is no more than 20 parts will superoxide and reductive agent add again 0.03～20.0 part of required boric acid ester to mix after dissolving.While not using superoxide and reductive agent, can not add clear water and directly use boric acid ester for crosslinked fluid.
2, the preparation of base fluid:
According to the of the fracturing fluid component proportioning of above-mentioned low temperature, in remaining clear water, successively add hybridization Semen Trigonellae rubber powder, crude oil demulsifier, cleanup additive, pore forming material, sterilant, clay stabilizer, pH adjusting agent, after adding, mix and be fracturing liquid base fluid.
When pressing crack construction, crosslinked fluid and base fluid are mixed in proportion and form fracturing liquid for pressing crack construction at the scene.
Above-mentioned hybridization Semen Trigonellae rubber powder derives from the endosperm of the hybridization product taking Semen Trigonellae as female parent, taking guar-bean as male parent, and its molecular weight is between 2 × 105-3 × 105, and its molecular structural formula is:
Wherein n value is: 100≤n≤150
The above-mentioned boric acid ester boric acid ester that to be boric acid form with the organism that contains 2 above-OH groups.
Above-mentioned crude oil demulsifier refers to alkyl polymerization ethers or alkyl polymerization alcohols or alkyl sulfonates or alkylsurfuric acid salt compounds or their arbitrary combination mixture.
Above-mentioned cleanup additive refers to polyoxyethylene alkylphenol or peregal or alkylsulfonate or alkyl-sulphate and their arbitrary combination mixture.
Above-mentioned pore forming material refers to the quaternary amine tensio-active agent of carbon atoms 12-18.
Above-mentioned sterilant refers to formaldehyde or glutaraldehyde or 12-16 alkyl benzyl ammonium chloride or 12-16 alkyl benzyl brometo de amonio or their arbitrary combination mixture and the aqueous solution.
Above-mentioned clay stabilizer is ammonium chloride or sodium-chlor or Repone K or calcium chloride or magnesium chloride or cationic quaternary ammonium salt or cationic quaternary ammonium salt polymkeric substance or their arbitrary combination mixture and the aqueous solution.
Above-mentioned superoxide refers to persulphate or benzoyl peroxide.
Above-mentioned reductive agent refers to sulphite or pyrosulfite.
The present invention compares with respect to existing vegetable jelly class fracturing liquid technology, has following advantage:
1, fracturing liquid can rely on the hydrolysis of self contained linking agent and stratum calcium ions and magnesium ions to realize broken glue, can not use superoxide and reductive agent to be oxidized brokenly glue.
2, fracturing liquid has been avoided lasting viscosity reduction in the pumping procedure of pressing crack construction, has highly stable heatproof and anti-shear performance.
3, fracturing liquid forms at stratum supporting crack wall filter cake and concentrated solution can destroy automatically, can keep the unimpeded of supporting crack wall, improve fracturing yield increasing effect.
Embodiment
, provide specific embodiment of the invention case below, but be not limited to this embodiment:
Embodiment 1:
Total volume is in 100m3 container, to add 90m3 water at the scene, start vacuum jet pump circulation, slowly add 250Kg hybridization Semen Trigonellae rubber powder by jet-pump suction port, then add respectively 50Kg crude oil demulsifier, 300Kg cleanup additive, 100Kg sterilant, 500Kg clay stabilizer, continue to be circulated to liquid mixing abundant, form the fracturing liquid base fluid L1 that hybridization Semen Trigonellae rubber powder concentration is 0.25%.
When pressing crack construction, in infusion solution L1,300Kg boric acid ester is mixed and forms fracturing liquid and carry out fracturing reform for the oil reservoir of 25 DEG C of well temperature with the ratio of " base fluid L1: boric acid ester=100Kg:0.3Kg " with base fluid L1.
Embodiment 2:
30Kg ammonium persulphate and 30Kg S-WAT are dissolved in 300K clear water, then mix with 300Kg boric acid ester and form crosslinked fluid M.
Total volume is in 100m3 container, to add 90m3 water at the scene, start vacuum jet pump circulation, slowly add 250Kg hybridization Semen Trigonellae rubber powder by jet-pump suction port, then add respectively 50Kg crude oil demulsifier, 300Kg cleanup additive, 100Kg sterilant, 500Kg clay stabilizer, continue to be circulated to liquid mixing abundant, form the fracturing liquid base fluid L2 that hybridization Semen Trigonellae rubber powder concentration is 0.25%.
When pressing crack construction, in infusion solution L2, crosslinked fluid M is mixed and forms fracturing liquid and carry out fracturing reform for the oil reservoir of 25 DEG C of well temperature with the ratio of " base fluid L2: crosslinked fluid M=100Kg:0.6Kg " with base fluid L2.
Embodiment 3:
Total volume is in 100m3 container, to add 90 m3 water at the scene, start vacuum jet pump circulation, slowly add 300 Kg hybridization Semen Trigonellae rubber powders by jet-pump suction port, then distinguish 500Kg cleanup additive, 100Kg sterilant, 500Kg clay stabilizer, 500Kg pore forming material, continue to be circulated to liquid mixing abundant, form the fracturing liquid base fluid L3 that hybridization Semen Trigonellae rubber powder concentration is 0.3%.
When pressing crack construction, in infusion solution L3,400Kg boric acid ester is mixed and forms fracturing liquid and carry out fracturing reform for the gasser of 30 DEG C of well temperature with the ratio of " base fluid L3: boric acid ester=100Kg:0.4Kg " with base fluid L3.
Although shown detailed embodiment of the present invention above, those skilled in the art, under prerequisite of the present invention, still can carry out part modifications and changes; The content that description is above mentioned, only as illustrative case, is not limitation of the present invention, has the low temperature fracturing liquid of above-mentioned technical characterictic, all falls into this patent protection domain.
Claims (10)
1. a low temperature fracturing liquid, is characterized in that: fracturing liquid is to hybridize the fracturing liquid that Semen Trigonellae rubber powder is linking agent as thickening material, boric acid ester; Described fracturing liquid is the mixture with following composition and weight part:
Clear water: 70.5～99.82 parts
Hybridization Semen Trigonellae rubber powder: 0.15～0.8 part
Boric acid ester: 0.03～20.0 part
Crude oil demulsifier: 0～1.0 part
Cleanup additive: 0～2.0 part
Pore forming material: 0～2.0 part
Sterilant: 0～1.0 part
Clay stabilizer: 0～2.0 part
0～0.2 part of superoxide
0～0.5 part of reductive agent.
2. a kind of low temperature fracturing liquid according to claim 1, it is characterized in that: described hybridization Semen Trigonellae rubber powder derives from the endosperm of the hybridization product taking Semen Trigonellae as female parent, taking guar-bean as male parent, its molecular weight is between 2 × 105-3 × 105, and its molecular structural formula is:
Wherein n value is: 100≤n≤150.
3. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: the described boric acid ester boric acid ester that to be boric acid form with the organic compound that contains 2 above-OH groups.
4. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: described crude oil demulsifier refers to alkyl polymerization ethers or alkyl polymerization alcohols or alkyl sulfonates or alkylsurfuric acid salt compounds or their arbitrary combination mixture.
5. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: described cleanup additive refers to polyoxyethylene alkylphenol or peregal or alkylsulfonate or alkyl-sulphate and their arbitrary combination mixture.
6. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: described pore forming material refers to the quaternary amine tensio-active agent of carbon atoms 12-18.
7. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: described sterilant refers to formaldehyde or glutaraldehyde or 12-16 alkyl benzyl ammonium chloride or 12-16 alkyl benzyl brometo de amonio or their arbitrary combination mixture and the aqueous solution.
8. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: described clay stabilizer is ammonium chloride or sodium-chlor or Repone K or calcium chloride or magnesium chloride or cationic quaternary ammonium salt or cationic quaternary ammonium salt polymkeric substance or their arbitrary combination mixture and the aqueous solution.
9. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: described superoxide refers to persulphate or benzoyl peroxide.
10. a kind of low temperature fracturing liquid according to claim 1, is characterized in that: described reductive agent refers to sulphite or pyrosulfite.
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| CN201410094505.9A CN103881692A (en) | 2014-03-14 | 2014-03-14 | Low-temperature fracturing fluid |
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| CN201410094505.9A CN103881692A (en) | 2014-03-14 | 2014-03-14 | Low-temperature fracturing fluid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566517A (en) * | 2016-10-21 | 2017-04-19 | 长江大学 | Low temperature gel breaking viscosity reducer of crosslinked guar gum backflow fracturing fluid, and preparation method thereof |
| CN108251095A (en) * | 2016-12-29 | 2018-07-06 | 中国石油化工股份有限公司 | A kind of organic borate cross-linker and its preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699499A (en) * | 2005-06-17 | 2005-11-23 | 甘肃省庆阳长庆井下化工厂 | Low-molecular environmentally-friendly fracturing fluid and use of recovery liquid thereof |
| US20110152133A1 (en) * | 2007-01-23 | 2011-06-23 | Halliburton Energy Services, Inc. | Compositions and methods for breaking a viscosity increasing polymer at very low temperature used in downhole well applications |
| CN102618248A (en) * | 2012-03-02 | 2012-08-01 | 陕西延长石油(集团)有限责任公司研究院 | High-chelating-degree liquid state boron cross-linking agent for gugnidine glue fracturing fluid |
| CN103484092A (en) * | 2012-06-13 | 2014-01-01 | 中国石油天然气股份有限公司 | Ultralow-temperature guanidine gum fracturing fluid |
-
2014
- 2014-03-14 CN CN201410094505.9A patent/CN103881692A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699499A (en) * | 2005-06-17 | 2005-11-23 | 甘肃省庆阳长庆井下化工厂 | Low-molecular environmentally-friendly fracturing fluid and use of recovery liquid thereof |
| US20110152133A1 (en) * | 2007-01-23 | 2011-06-23 | Halliburton Energy Services, Inc. | Compositions and methods for breaking a viscosity increasing polymer at very low temperature used in downhole well applications |
| CN102618248A (en) * | 2012-03-02 | 2012-08-01 | 陕西延长石油(集团)有限责任公司研究院 | High-chelating-degree liquid state boron cross-linking agent for gugnidine glue fracturing fluid |
| CN103484092A (en) * | 2012-06-13 | 2014-01-01 | 中国石油天然气股份有限公司 | Ultralow-temperature guanidine gum fracturing fluid |
Non-Patent Citations (7)
| Title |
|---|
| 何生厚: "《油气开采工程师手册》", 30 April 2006, 中国石化出版社 * |
| 潘道东: "《功能性食品添加剂》", 31 January 2006, 中国轻工业出版社 * |
| 王佳等: "压裂液用硼交联剂作用机理分析", 《精细石油化工进展》 * |
| 蒋国华: "特低温油井加砂压裂液试验研究", 《油田化学》 * |
| 赵以文: "香豆硼冻胶压裂液", 《油田化学》 * |
| 邢景宝: "《大牛地低压致密气藏储层改造理论与实践》", 30 June 2009, 中国石化出版社 * |
| 陈嘉川 等: "《造纸植物资源化学》", 30 April 2012, 科学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566517A (en) * | 2016-10-21 | 2017-04-19 | 长江大学 | Low temperature gel breaking viscosity reducer of crosslinked guar gum backflow fracturing fluid, and preparation method thereof |
| CN108251095A (en) * | 2016-12-29 | 2018-07-06 | 中国石油化工股份有限公司 | A kind of organic borate cross-linker and its preparation method and application |
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