CN103468237A - Clean fracturing fluid and preparation method thereof - Google Patents
Clean fracturing fluid and preparation method thereof Download PDFInfo
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- CN103468237A CN103468237A CN2013102331911A CN201310233191A CN103468237A CN 103468237 A CN103468237 A CN 103468237A CN 2013102331911 A CN2013102331911 A CN 2013102331911A CN 201310233191 A CN201310233191 A CN 201310233191A CN 103468237 A CN103468237 A CN 103468237A
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- fracturing fluid
- clean fracturing
- agent
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- gel breaker
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- 239000012530 fluid Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000012745 toughening agent Substances 0.000 claims description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 239000013543 active substance Substances 0.000 claims description 8
- 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
- 239000004160 Ammonium persulphate Substances 0.000 claims description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical group [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- 239000004159 Potassium persulphate Substances 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- 235000019394 potassium persulphate Nutrition 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
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical group [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 4
- 229920003169 water-soluble polymer Polymers 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000002579 anti-swelling effect Effects 0.000 abstract 2
- 239000012744 reinforcing agent Substances 0.000 abstract 2
- 239000002562 thickening agent Substances 0.000 abstract 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000003129 oil well Substances 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The invention belongs to the technology field of fracturing fluid used for petroleum reservoir strata, and relates to a clean fracturing fluid and a preparation method thereof. The clean fracturing fluid comprises following ingredients, by weight: 0.3 to 0.7% of a thickening agent, 0.2 to 0.6% of a reinforcing agent, 0.6 to 1% of an antiswelling agent, 0.01 to 0.2% of a gel breaker, and the balance water. The preparation method comprises following steps: the antiswelling agent is dissolved in water uniformly so as to obtain a solution; the thickening agent is added into the solution for uniform mixing so as to obtain a base liquid; and the reinforcing agent and the gel breaker are added into the base liquid, and the mixture is mixed uniformly so as to obtain the clean fracturing fluid. Technological process of the preparation method is simple and convenient. The pH value of the clean fracturing fluid is 6 to 8; frictional resistance is low; application temperature range is wide; the addition of ordinary gel breaker is capable of realizing gel breaking of the clean fracturing fluid, and no residue is left; damages on petroleum reservoir strata are few; and the petroleum reservoir strata possesses excellent temperature resistance and shearing resistance, and is suitable for oil well fracturing operation under complicated conditions.
Description
Technical field
the present invention relates to petroleum reservoir fracturing liquid technical field, is a kind of clean fracturing fluid and preparation method thereof.
Background technology
at present both at home and abroad fracturing reform mainly be take water-based fracturing liquid system that melon glue is viscosifying agent as main.The residue of this guar gum fracturing fluid system will inevitably cause serious obstruction that its rate of permeation is significantly descended to stratum and filling bed, thereby greatly reduces the effect of pressure break, for low pressure, low hole, the fine and close hydrocarbon zone such as hypotonic, hides especially outstanding especially.Obtained reasonable effect from the most transformations of current correctional effect, the part block is rate of permeation, block that reservoir pressure is lower particularly, and correctional effect is not obvious.The undesirable well of these correctional effects mainly contains two kinds of performances after pressing: a kind of is after pressing, to spray logically, needs could obtain certain production capacity through other measure; Though another kind can spray logical after pressing but oil and gas production is lower.Think by analysis, outside the Pass these low oil production gas wells remove and have with factors such as geological characteristics own, fracturing technologies, in reservoir reconstruction, fracturing liquid also can not be ignored the injury of reservoir.
Summary of the invention
the invention provides a kind of clean fracturing fluid and preparation method thereof, overcome the deficiency of above-mentioned prior art, it can effectively solve the problem of existing fracturing liquid to reservoir damage.
one of technical scheme of the present invention realizes by following measures: a kind of clean fracturing fluid, and the percentage ratio meter consists of by weight: the water of viscosifying agent 0.3% to 0.7%, toughener 0.2% to 0.6%, expansion-resisting agent 0.6% to 1%, gel breaker 0.01% to 0.2% and surplus; Wherein, this clean fracturing fluid obtains as follows: expansion-resisting agent is mixed to wiring solution-forming in water, then add viscosifying agent to mix the formation base fluid in this solution, then to adding toughener and gel breaker and mix in base fluid, obtain clean fracturing fluid.
two of technical scheme of the present invention realizes by following measures: a kind of preparation method of clean fracturing fluid, and the percentage ratio meter consists of by weight: the water of viscosifying agent 0.3% to 0.7%, toughener 0.2% to 0.6%, expansion-resisting agent 0.6% to 1%, gel breaker 0.01% to 0.2% and surplus; Wherein, the preparation method of this clean fracturing fluid carries out in the steps below: expansion-resisting agent is mixed to wiring solution-forming in water, then add viscosifying agent to be mixed into base fluid in this solution, then to adding toughener and gel breaker and mix in base fluid, obtain clean fracturing fluid.
below the further optimization and/or improvements to the foregoing invention technical scheme:
above-mentioned viscosifying agent is that molecular weight is 300 * 10
4
to 1000 * 10
4
hydrophobic associated water-soluble polymer.
above-mentioned expansion-resisting agent is Repone K; Or/and gel breaker is ammonium persulphate or Potassium Persulphate or Sodium Persulfate.
above-mentioned toughener is sulphur salt tensio-active agent.
above-mentioned sulphur salt tensio-active agent is sodium laurylsulfonate.
processing method of the present invention is simple and easy to do, and the clean fracturing fluid pH value that the inventive method is produced is 6 to 8; Frictional resistance is low, and applicable reservoir temperature scope is wide, and this clean fracturing fluid uses conventional break agent just can break glue and without residue, little to the injury of reservoir, has good heatproof shear resistant simultaneously, can be suitable for the frac job of Various Complex operating mode well.
The accompanying drawing explanation
the heatproof endurance of cutting energy graphic representation that Fig. 1 is temperature clean fracturing fluid of the present invention in the time of 85 ℃.
Embodiment
the present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and practical situation.
below in conjunction with embodiment, the invention will be further described:
embodiment 1, this clean fracturing fluid, and the percentage ratio meter consists of by weight: the water of viscosifying agent 0.3% to 0.7%, toughener 0.2% to 0.6%, expansion-resisting agent 0.6% to 1%, gel breaker 0.01% to 0.2% and surplus; Wherein, this clean fracturing fluid obtains by following preparation method: expansion-resisting agent is mixed to wiring solution-forming in water, then add viscosifying agent to mix the formation base fluid in this solution, then to adding toughener and gel breaker and mix in base fluid, obtain clean fracturing fluid.
embodiment 2, this clean fracturing fluid, and the percentage ratio meter consists of by weight: viscosifying agent 0.3% or 0.7%, toughener 0.2% or 0.6%, expansion-resisting agent 0.6% or 1%, gel breaker 0.01% or 0.2% and the water of surplus; Wherein, this clean fracturing fluid obtains by following preparation method: expansion-resisting agent is mixed to wiring solution-forming in water, then add viscosifying agent to mix the formation base fluid in this solution, then to adding toughener and gel breaker and mix in base fluid, obtain clean fracturing fluid.
embodiment 3, as above-described embodiment preferably, viscosifying agent is that molecular weight is 300 * 10
4
to 1000 * 10
4
hydrophobic associated water-soluble polymer.
embodiment 4, as above-described embodiment preferably, expansion-resisting agent is Repone K; Or/and gel breaker is ammonium persulphate or Potassium Persulphate or Sodium Persulfate.
embodiment 5, as above-described embodiment preferably, toughener is sulphur salt tensio-active agent.
embodiment 6, as above-described embodiment preferably, sulphur salt tensio-active agent is sodium laurylsulfonate.
the clean fracturing fluid pH value of producing according to the inventive method is 6 to 8; Frictional resistance is low, average frictional resistance is only 40% to 50% of clear water, the applicable reservoir temperature scope of this clean fracturing is wide, applicable reservoir temperature is 20 ℃ to 180 ℃, and this clean fracturing fluid is used conventional break agent just can break glue and without residue, residue content is 0mg/L substantially, little to the injury of reservoir, and the core damage rate is less than to 10%; The clean fracturing fluid of producing according to the inventive method can be widely used in conventional well pressure break, the complicated pressure break operating mode of unconventional well (carbon dioxide foaming pressure break, shale and tight sand gas well pressure break, volcanics well fracturing, seam net pressure break and volume fracturing, refracturing, turn to pressure break); Fig. 1 is the heatproof endurance of cutting energy graphic representation of temperature clean fracturing fluid of the present invention in the time of 85 ℃, and as seen from Figure 1, virtual viscosity does not increase with shear time and obviously descends, therefore show good heatproof shear resistant.
Claims (10)
1. a clean fracturing fluid, is characterized in that the percentage ratio meter consists of by weight: the water of viscosifying agent 0.3% to 0.7%, toughener 0.2% to 0.6%, expansion-resisting agent 0.6% to 1%, gel breaker 0.01% to 0.2% and surplus; Wherein, this clean fracturing fluid obtains as follows: expansion-resisting agent is mixed to wiring solution-forming in water, then add viscosifying agent to mix the formation base fluid in this solution, then to adding toughener and gel breaker and mix in base fluid, obtain clean fracturing fluid.
2. clean fracturing fluid according to claim 1, is characterized in that viscosifying agent is that molecular weight is 300 * 10
4to 1000 * 10
4hydrophobic associated water-soluble polymer.
3. clean fracturing fluid according to claim 1 and 2, is characterized in that expansion-resisting agent is Repone K; Or/and gel breaker is ammonium persulphate or Potassium Persulphate or Sodium Persulfate.
4. according to claim 1 or 2 or 3 described clean fracturing fluids, it is characterized in that toughener is sulphur salt tensio-active agent.
5. clean fracturing fluid according to claim 4, is characterized in that sulphur salt tensio-active agent is sodium laurylsulfonate.
6. the preparation method of a clean fracturing fluid, is characterized in that the percentage ratio meter consists of by weight: the water of viscosifying agent 0.3% to 0.7%, toughener 0.2% to 0.6%, expansion-resisting agent 0.6% to 1%, gel breaker 0.01 to 0.2% and surplus; Wherein, the preparation method of this clean fracturing fluid carries out in the steps below: expansion-resisting agent is mixed to wiring solution-forming in water, then add viscosifying agent to be mixed into base fluid in this solution, then to adding toughener and gel breaker and mix in base fluid, obtain clean fracturing fluid.
7. the preparation method of clean fracturing fluid according to claim 6, is characterized in that viscosifying agent is that molecular weight is 300 * 10
4to 1000 * 10
4hydrophobic associated water-soluble polymer.
8. according to the preparation method of claim 6 or 7 described clean fracturing fluids, it is characterized in that expansion-resisting agent is Repone K; Or/and gel breaker is ammonium persulphate or Potassium Persulphate or Sodium Persulfate.
9. according to the preparation method of claim 6 or 7 or 8 described clean fracturing fluids, it is characterized in that toughener is sulphur salt tensio-active agent.
10. according to the preparation method of clean fracturing fluid claimed in claim 9, it is characterized in that sulphur salt tensio-active agent is sodium laurylsulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102331911A CN103468237A (en) | 2013-06-13 | 2013-06-13 | Clean fracturing fluid and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102331911A CN103468237A (en) | 2013-06-13 | 2013-06-13 | Clean fracturing fluid and preparation method thereof |
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|---|---|
| CN103468237A true CN103468237A (en) | 2013-12-25 |
Family
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| CN2013102331911A Pending CN103468237A (en) | 2013-06-13 | 2013-06-13 | Clean fracturing fluid and preparation method thereof |
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| CN (1) | CN103468237A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105219372A (en) * | 2015-11-19 | 2016-01-06 | 四川光亚聚合物化工有限公司 | A kind of multi-functional composite fracturing liquid system |
| CN106675544A (en) * | 2016-12-20 | 2017-05-17 | 陕西海山能源发展有限公司 | Novel clean fracturing fluid system |
| CN110408376A (en) * | 2019-08-28 | 2019-11-05 | 巴州科邦石油助剂有限公司 | Acidproof clean fracturing fluid of viscoplasticity and preparation method thereof |
| CN110540833A (en) * | 2018-05-29 | 2019-12-06 | 山东大学 | A stable carbon dioxide water-based foam fracturing fluid and its preparation method and its application in enhancing shale gas recovery |
| WO2019237050A1 (en) * | 2018-06-07 | 2019-12-12 | Texas Tech University System | Method to generate microfractures by chemical reaction in low carbonate mineral content shale reservoirs |
| CN111548782A (en) * | 2020-04-30 | 2020-08-18 | 长江大学 | Nano-enhanced supermolecule clean fracturing fluid and preparation method thereof |
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| CN110540833A (en) * | 2018-05-29 | 2019-12-06 | 山东大学 | A stable carbon dioxide water-based foam fracturing fluid and its preparation method and its application in enhancing shale gas recovery |
| WO2019237050A1 (en) * | 2018-06-07 | 2019-12-12 | Texas Tech University System | Method to generate microfractures by chemical reaction in low carbonate mineral content shale reservoirs |
| US11725492B2 (en) | 2018-06-07 | 2023-08-15 | Texas Tech University System | Method to generate microfractures by chemical reaction in low carbonate mineral content shale reservoirs |
| CN110408376A (en) * | 2019-08-28 | 2019-11-05 | 巴州科邦石油助剂有限公司 | Acidproof clean fracturing fluid of viscoplasticity and preparation method thereof |
| CN111548782A (en) * | 2020-04-30 | 2020-08-18 | 长江大学 | Nano-enhanced supermolecule clean fracturing fluid and preparation method thereof |
| CN111548782B (en) * | 2020-04-30 | 2023-01-24 | 长江大学 | Nano-enhanced supermolecule clean fracturing fluid and preparation method thereof |
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Application publication date: 20131225 |