CN102533242B - Rapid gel breaker for surfactant fracturing fluid - Google Patents
Rapid gel breaker for surfactant fracturing fluid Download PDFInfo
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- CN102533242B CN102533242B CN201110427532XA CN201110427532A CN102533242B CN 102533242 B CN102533242 B CN 102533242B CN 201110427532X A CN201110427532X A CN 201110427532XA CN 201110427532 A CN201110427532 A CN 201110427532A CN 102533242 B CN102533242 B CN 102533242B
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- gel breaker
- fracturing fluid
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- 239000012530 fluid Substances 0.000 title claims abstract description 41
- 239000004094 surface-active agent Substances 0.000 title abstract description 5
- -1 sorbitan ester Chemical class 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 150000004671 saturated fatty acids Chemical class 0.000 claims abstract description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- 229910052799 carbon Inorganic materials 0.000 claims description 25
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 10
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 9
- 230000015556 catabolic process Effects 0.000 claims description 9
- 238000006731 degradation reaction Methods 0.000 claims description 9
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 5
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 5
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 5
- 239000005639 Lauric acid Substances 0.000 claims description 4
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 3
- 230000005012 migration Effects 0.000 abstract description 2
- 238000013508 migration Methods 0.000 abstract description 2
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000008398 formation water Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000011067 sorbitan monolaureate Nutrition 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010010214 Compression fracture Diseases 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000004064 cosurfactant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Detergent Compositions (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Colloid Chemistry (AREA)
Abstract
The invention provides a rapid gel breaker of surfactant fracturing fluid. The gel breaker is composed of alcohol with 6-16 carbon atoms, polyoxyethylene ether, saturated fatty acid, sorbitan ester and water. The gel breaker can rapidly break gel of clean fracturing fluid, and the gel breaker is added in a gradient increasing and adding mode at the later stage of fracturing construction, so that the clean fracturing fluid can be rapidly broken gel in a certain range at a shaft, the time for breaking the gel of the fracturing fluid caused by the migration of formation water or oil to a well hole is reduced, and the gel breaking effect is effectively improved.
Description
Technical field
The present invention relates to the broken glue of the clean fracturing fluid field in the fracture in oil and water wells transformation, particularly rapid viscosity breaker for surfactant fracturing fluid.
Background technology
At present, oil field compression fracture mainly contains the pressure break liquid system such as aqueous fracturing fluid, oil base fracturing fluid, clean fracturing fluid with fracturing liquid.Clean fracturing fluid is rise in recent years a kind of without the residue Fracture Fluid system.Its major ingredient is cats product or anion surfactant, and this tensio-active agent is mixed to form a kind of viscoelastic fracturing fluid mutually with additives such as inorganic salt, cosurfactants.
Of the fracturing fluid broken glue effect quality is related to the row of returning of breaking glue solution and the quality of stratum flow conductivity, for improving the fracturing reform effect, should make fracturing liquid rubber-breaking thorough as far as possible.At present, the broken glue mode of clean fracturing fluid is mainly a large amount of local waters or oil (hydrocarbon) class.But, for hypotonic low yield oil reservoir, Sweet natural gas, coalbed methane reservoir, the broken poor and broken glue time of glue effect is long, affects construction speed and effect.
Summary of the invention
The present invention is intended to solve the problem of the broken glue difficulty of clean fracturing fluid caused because of local water or shortage of oil, and its consumption is few, and broken glue is thorough rapidly, can greatly improve the flow conductivity on stratum around pit shaft.
Principle of work of the present invention is: by the effect of hydrophilic group hydrophobic group to clean fracturing fluid in gel breaker, destroy original physical rearrangements structure, this process is physical action, make micella be decomposed into single free surfactant molecule, thereby reach brokenly the glue purpose, adjust each component concentration in gel breaker, can effectively control brokenly the glue time.
A kind of gel breaker, with respect to the gross weight of described gel breaker, the alcohol 2% to 15% that carbon number is 6～16; Soxylat A 25-7 5% to 30%, described Soxylat A 25-7 is the fatty alcohol-polyoxyethylene ether that contains carbon number 12～18 or alkylphenol polyoxyethylene or the polyoxyethylene poly-oxygen propylene aether that contains carbon number 8～9; The saturated fatty acid 5% to 40% of carbon number 6～18; Sorbitan ester 2% to 15%, described sorbitan ester is Span-20,40,60,80, a kind of in Tween-20,40,60,80; Surplus is water.
The broken glue speed of the alcohol that carbon number is 6～16 is fast, can reduce water lock effect, better for the gas well effect.
Soxylat A 25-7 can make clean fracturing fluid lose visco-elasticity.
Saturated fatty acid, for controlling brokenly the glue time, prevents too fast broken glue, to avoid sand plug.
Sorbitan ester can make clean fracturing fluid lose visco-elasticity.
According to concrete technical scheme of the present invention, the alcohol that described carbon number is 6～16 is n-Octanol, lauryl alcohol or 16 carbon alcohol.
According to concrete technical scheme of the present invention, the saturated fatty acid of described carbon number 6～18 is sad, lauric acid or palmitinic acid.
According to concrete technical scheme of the present invention, described sorbitan ester is Span-20,60, a kind of in Tween-40.
According to concrete technical scheme of the present invention, described gel breaker operating weight is 0.1%～5% of clean fracturing fluid weight, can in 0.5～30 minute, make thoroughly broken glue of clean fracturing fluid, and viscosity degradation to 1～3mPa.s, reach the row's of returning requirement.
Such gel breaker can be fast by the broken glue of clean fracturing fluid, 0.5 make viscosity degradation to 1～3mPa.s in～30 minutes, reach the row's of returning requirement, increase progressively the mode of appending in the pressing crack construction later stage by gradient and add this gel breaker, clean fracturing fluid in pit shaft place certain limit can be broken rapidly to glue, reduce local water or oil and made the time of fracturing liquid rubber-breaking to the well migration, effectively improved broken glue effect.
Embodiment
Gel breaker of the present invention, with respect to the gross weight of described gel breaker, the alcohol 2% to 15% that carbon number is 6～16; Soxylat A 25-7 5% to 30%, described Soxylat A 25-7 is the fatty alcohol-polyoxyethylene ether that contains carbon number 12～18 or alkylphenol polyoxyethylene or the polyoxyethylene poly-oxygen propylene aether that contains carbon number 8～9; The saturated fatty acid 5% to 40% of carbon number 6～18; Sorbitan ester 2% to 15%, described sorbitan ester is Span-20,40,60,80, a kind of in Tween-20,40,60,80; Surplus is water.
The broken glue speed of the alcohol that carbon number is 6～16 is fast, can reduce water lock effect, better for the gas well effect.
Soxylat A 25-7 can make clean fracturing fluid lose visco-elasticity.
Saturated fatty acid, for controlling brokenly the glue time, prevents too fast broken glue, to avoid sand plug.
Sorbitan ester can make clean fracturing fluid lose visco-elasticity.
The alcohol that described carbon number is 6～16 is n-Octanol, lauryl alcohol or 16 carbon alcohol.
The saturated fatty acid of described carbon number 6～18 is sad, lauric acid or palmitinic acid.
Described sorbitan ester is Span-20,60, a kind of in Tween-40.
Described gel breaker operating weight is 0.1%～5% of clean fracturing fluid weight, can in 0.5～30 minute, make thoroughly broken glue of clean fracturing fluid, and liquid viscosity drops to 1～3mPa.s, reaches the row's of returning requirement.
This experiment medium viscosity measuring method all adopts the fast rotary viscosity design determining of ZNN-D6 six.At first sample is placed in the thermostat water bath of 20 ℃ to constant temperature 10 minutes, adjust level and the zero point of viscometer according to the working specification of ZNN-D6 six fast rotational viscosimeters, then sample is poured in measuring cup to the scale marks place, under the rotating speed of 100r/min, measured liquid viscosity.
Below the mode with specific embodiment illustrates the present invention, but the present invention never only limits to the following example.
Embodiment
Embodiment 1
Get n-Octanol 5g, fatty alcohol-polyoxyethylene ether (AEO3) 20g, sad 5g, sorbitan ester (span-20) 3g, mix mutually with the 67ml water, forms gel breaker.Add above-mentioned gel breaker under 30 ℃ of water bath condition in clean fracturing fluid, wherein adding weight shared part by weight in clean fracturing fluid of gel breaker is can break glue in 0.2%, 20 minute, and viscosity degradation is to 3mPa.s.
Embodiment 2
Get lauryl alcohol 10g, alkylphenol polyoxyethylene (OP-10) 20g, lauric acid 15g, sorbitan ester (span-60) 10g, mix mutually with the 45ml water, forms gel breaker.Add above-mentioned gel breaker under 40 ℃ of water bath condition in clean fracturing fluid, wherein adding weight shared part by weight in clean fracturing fluid of gel breaker is can break glue in 0.5%, 13 minute, and viscosity degradation is to 3mPa.s.
Embodiment 3
Get 16 carbon alcohol 10g, polyoxyethylene poly-oxygen propylene aether (L63) 30g, palmitinic acid 30g, sorbitan ester (Tween-40) 5g, mix mutually with the 25ml water, forms gel breaker.Add above-mentioned gel breaker under 50 ℃ of water bath condition in clean fracturing fluid, wherein adding weight shared part by weight in clean fracturing fluid of gel breaker is can break glue in 1%, 2 minute, and viscosity degradation is to 2mPa.s.
Embodiment 4
Get n-Octanol 2g, fatty alcohol-polyoxyethylene ether (AEO3) 5g, sad 5g, sorbitan ester (span-20) 2g, mix mutually with the 86ml water, forms gel breaker.Add above-mentioned gel breaker under 30 ℃ of water bath condition in clean fracturing fluid, wherein adding weight shared part by weight in clean fracturing fluid of gel breaker is can break glue in 5%, 5.5 minute, and viscosity degradation is to 3mPa.s.
Embodiment 5
Get 16 carbon alcohol 15g, polyoxyethylene poly-oxygen propylene aether (L63) 5g, palmitinic acid 40g, sorbitan ester (Tween-40) 15g, mix mutually with the 25ml water, forms gel breaker.Add above-mentioned gel breaker under 50 ℃ of water bath condition in clean fracturing fluid, wherein adding weight shared part by weight in clean fracturing fluid of gel breaker is can break glue in 0.1%, 25 minute, and viscosity degradation is to 2mPa.s.
The broken glue of the gel breaker of making by the present invention is thorough rapidly, can make viscosity degradation to 1～3mPa.s in 0.5～30 minute fast by the broken glue of clean fracturing fluid, reaches the row's of returning requirement.
Claims (5)
1. a gel breaker, with respect to the gross weight of described gel breaker, its alcohol that is 6～16 by carbon number 2% to 15%; Soxylat A 25-7 5% to 30%, the saturated fatty acid 5% to 40% of carbon number 6～18; Sorbitan ester 2% to 15%, excess water forms; Wherein, described Soxylat A 25-7 is the fatty alcohol-polyoxyethylene ether that contains carbon number 12～18 or alkylphenol polyoxyethylene or the polyoxyethylene poly-oxygen propylene aether that contains carbon number 8～9; Described sorbitan ester is Span-20,40,60,80, a kind of in Tween-20,40,60,80.
2. gel breaker according to claim 1, it is characterized in that: the alcohol that described carbon number is 6～16 is n-Octanol, lauryl alcohol or 16 carbon alcohol.
3. gel breaker according to claim 1 is characterized in that: the saturated fatty acid of described carbon number 6～18 is sad, lauric acid or palmitinic acid.
4. gel breaker according to claim 1, it is characterized in that: described sorbitan ester is Span-20,60, a kind of in Tween-40.
5. gel breaker according to claim 1, it is characterized in that: described gel breaker operating weight is 0.1%～5% of clean fracturing fluid weight, can in 0.5～30 minute, make thoroughly broken glue of clean fracturing fluid, viscosity degradation to 1～3mPa.s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110427532XA CN102533242B (en) | 2011-12-19 | 2011-12-19 | Rapid gel breaker for surfactant fracturing fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110427532XA CN102533242B (en) | 2011-12-19 | 2011-12-19 | Rapid gel breaker for surfactant fracturing fluid |
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| Publication Number | Publication Date |
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| CN102533242A CN102533242A (en) | 2012-07-04 |
| CN102533242B true CN102533242B (en) | 2013-12-04 |
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| CN201110427532XA Active CN102533242B (en) | 2011-12-19 | 2011-12-19 | Rapid gel breaker for surfactant fracturing fluid |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480419B (en) * | 2013-09-24 | 2015-06-03 | 陕西省石油化工研究设计院 | Selective high-molecular fracture catalyst as well as preparation method and application thereof |
| CN104629707A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气股份有限公司 | Viscoelastic surfactant clean fracturing fluid gel breaker and application thereof |
| CN105885817A (en) * | 2016-04-29 | 2016-08-24 | 西北大学 | Clean fracturing fluid gel breaker and application of fracturing fluid in low permeability-ultra-low permeability oil and gas reservoirs |
| CN112210362A (en) * | 2020-09-07 | 2021-01-12 | 中石油煤层气有限责任公司 | Solid gel breaker, preparation method and method for delaying gel breaking time |
| CN115583675A (en) * | 2021-07-06 | 2023-01-10 | 北京中科润金环保工程股份有限公司 | High-solubility gel breaker with high reaction speed |
| CN115595172A (en) * | 2021-07-09 | 2023-01-13 | 北京中科润金环保工程股份有限公司（Cn） | Demulsifier special for aging oil and high in adaptability and demulsification efficiency |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927139A (en) * | 2010-07-12 | 2010-12-29 | 孙安顺 | Self-emulsifier and use thereof in tertiary oil recovery |
| CN102010704A (en) * | 2010-11-18 | 2011-04-13 | 陕西延长石油(集团)有限责任公司研究院 | Viscoelastic surfactant cleaning fracturing fluid gel breaker and field construction method |
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- 2011-12-19 CN CN201110427532XA patent/CN102533242B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927139A (en) * | 2010-07-12 | 2010-12-29 | 孙安顺 | Self-emulsifier and use thereof in tertiary oil recovery |
| CN102010704A (en) * | 2010-11-18 | 2011-04-13 | 陕西延长石油(集团)有限责任公司研究院 | Viscoelastic surfactant cleaning fracturing fluid gel breaker and field construction method |
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| CN102533242A (en) | 2012-07-04 |
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