CN107739601A - A kind of macromolecule friction-reducing agent of fracturing fluid and preparation method thereof - Google Patents
A kind of macromolecule friction-reducing agent of fracturing fluid and preparation method thereof Download PDFInfo
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- CN107739601A CN107739601A CN201711001023.4A CN201711001023A CN107739601A CN 107739601 A CN107739601 A CN 107739601A CN 201711001023 A CN201711001023 A CN 201711001023A CN 107739601 A CN107739601 A CN 107739601A
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- fracturing fluid
- reducing agent
- friction
- macromolecule
- macromolecule friction
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/28—Friction or drag reducing additives
Abstract
The present invention provides a kind of macromolecule friction-reducing agent of fracturing fluid and preparation method thereof, and the macromolecule friction-reducing agent of fracturing fluid includes the following each component of weight proportion：35 99 parts of water-absorbing resin gel；20 52 parts of polyacrylamide；80 100 parts of polyvinyl alcohol；5 20 parts of conductive agent；20 30 parts of surfactant；100 150 parts of organic solvent.The invention also discloses a kind of preparation method of macromolecule friction-reducing agent of fracturing fluid.Macromolecule friction-reducing agent of fracturing fluid of the present invention can effectively reduce the frictional resistance of fracturing fluid, good with other additive compatibilities of conventional fracturing fluid system, not influence fracturing fluid property.
Description
Technical field
The present invention relates to friction-reducing agent of fracturing fluid technology, more particularly to a kind of macromolecule friction-reducing agent of fracturing fluid and its preparation side
Method.
Background technology
Pressure break acid fracturing is the main well stimulation of oil-gas field development.Fracturing fluid is the working solution of fracturing process, and fracturing fluid exists
Stratum is pumped into after the supercharging of high pressure pumping-in equipment, presses off crack in the earth formation, and extend crack.Since 21 century, in face of huge
Energy demand, world's oil-production capacity construction and production but relative deficiency, then people start to increasingly focus on non-conventional oil
Natural gas resource.Wherein, it is about according to the prediction of 2009 of world's gas magazine and statistics, worldwide shale gas reserves
4.6 × 1014m3, stock number very abundant.
Because the reservoir conditions of untraditional reservoir are poor, the seepage channel needed for the economic exploitation can not be generally provided, it is more
Number all needs implementation hydraulic fracturing to can be only achieved commercial mining value, but conventional fracturing fluid system frictional resistance is high, and energy loss is big,
It is severely impacted pressing crack construction quality.The fracturing fluid of addition friction reducer have the characteristics that frictional resistance is low, the row of returning lead it is high, therefore by
To domestic and international oil company's extensive concern.At present, key component friction reducer relies on import mostly in fracturing fluid, expensive, sternly
The exploitation of China's tight sand petroleum resources is hindered again.
Because shale Hydrocarbon Reservoir Permeability is ultralow, thickness is big, intrinsic fracture development, although intrinsic fracture can form one
Determine seepage channel, but the seepage channel needed for the economic exploitation can not be generally provided, most oily shale are required for implementing water
Force to split and can be only achieved commercial mining value, but conventional polymer matrix fracturing fluid system (modifyed guar gum etc.), due to containing
Water-insoluble and conventional colloid residue, easily cause shale reservoir grievous injury, and fracturing fluid is unfavorable for stitching net after being cross-linked to form frozen glue
Formation, and the frictional resistance in tubing string can be greatly increased, therefore restriction is brought to construction equipment.Hydro Fracturing Stimulation Treatment is reduced at present
Operation pressure can also be by the method for weighted fracture fluid, but can influence the crosslinking of fracturing fluid due to adding salt latter aspect
And temperature and shearing sustainability, and put into also very high, it is therefore necessary to the frictional resistance of fracturing fluid system is reduced, so that volume increase is arranged
Applying smoothly to implement.
The content of the invention
It is an object of the present invention to be directed to above-mentioned problems, a kind of macromolecule friction-reducing agent of fracturing fluid, present invention height are proposed
Molecule friction-reducing agent of fracturing fluid can effectively reduce the frictional resistance of fracturing fluid, good with other additive compatibilities of conventional fracturing fluid system
It is good, do not influence fracturing fluid property.
To achieve the above object, the technical solution adopted by the present invention is：A kind of macromolecule friction-reducing agent of fracturing fluid, including weight
Match following each component：
Further, the macromolecule friction-reducing agent of fracturing fluid includes the following each component of weight proportion：
Further, the Molecular Weight for Polyacrylamide is 500,000~6,000,000.
Further, the surfactant is DTAC.
Further, the organic solvent is ethanol or white oil.
Further, the surfactant is sorbester p17 and/or Tween 80.
Further, the conductive agent is sodium chloride.
Further, macromolecule friction-reducing agent of fracturing fluid also includes expansion-resisting agent potassium chloride.
Another object of the present invention additionally provides a kind of preparation method of macromolecule friction-reducing agent of fracturing fluid, including following step
Suddenly：
1) surfactant is added in organic solvent, be slowly stirred to well mixed；
2) water-absorbing resin gel is added, is slowly stirred 5-20min, rear 1500~2000rpm high-speed stirreds 5-10min；
3) mixing speed is reduced, is slowly added to polyacrylamide and polyvinyl alcohol, 1000~1500rpm quickly stirs 10-
20min is completely dissolved it, produces the friction reducer.
Further, expansion-resisting agent is added when polyacrylamide and polyvinyl alcohol are added in step 3).
Macromolecule friction-reducing agent of fracturing fluid scientific formulation of the present invention, rationally, compared with prior art with advantages below：
1st, macromolecule friction-reducing agent of fracturing fluid of the present invention can effectively reduce the frictional resistance of fracturing fluid, while can surpass suitable for ultra-deep
Temperature reservoirs, and it is good with other additive compatibilities of conventional fracturing fluid system, do not influence fracturing fluid property.
2nd, friction reducer of the present invention, prepared using polyacrylamide and organic solvent, cost is low, resistance-reducing performance is good, Neng Gou
Frictional resistance of the fluid in pipeline and pit shaft, no floccule good with other additive compatibilities are effectively reduced under relatively low concentration
And precipitation generation.
3rd, reversed-phase emulsion friction reducer provided by the invention need to only produce product by one-step polymerization in process of production, and raw
Nitrogen deoxygenation need not be passed through during production can reach products application performance, and the production time is short, greatly simplify production process, drop
Low production cost.
Embodiment
The present invention is further described with reference to embodiments：
Embodiment 1
Present embodiment discloses a kind of macromolecule friction-reducing agent of fracturing fluid, including each component that weight proportion is following：
The Molecular Weight for Polyacrylamide is 500,000~1,000,000；The surfactant is trimethyl chlorination
Ammonium；The organic solvent is ethanol；The surfactant is sorbester p17 and Tween 80；The conductive agent is sodium chloride.
The preparation method of the macromolecule friction-reducing agent of fracturing fluid, comprises the following steps：
1) surfactant is added in organic solvent, be slowly stirred to well mixed；
2) water-absorbing resin gel is added, is slowly stirred 5min, rear 1500~2000rpm high-speed stirreds 5min；
3) mixing speed is reduced, is slowly added to polyacrylamide and polyvinyl alcohol, 1000~1500rpm is quickly stirred
10min is completely dissolved it, produces the friction reducer.
Embodiment 2
Present embodiment discloses a kind of macromolecule friction-reducing agent of fracturing fluid, including each component that weight proportion is following：
The Molecular Weight for Polyacrylamide is 200-500 ten thousand；The surfactant is DTAC；
The organic solvent is white oil；The surfactant is sorbester p17 and/or Tween 80；The conductive agent is sodium chloride.
The preparation method of macromolecule friction-reducing agent of fracturing fluid, comprises the following steps：
1) surfactant is added in organic solvent, be slowly stirred to well mixed；
2) water-absorbing resin gel is added, is slowly stirred 10min, rear 1500~2000rpm high-speed stirreds 5min；
3) mixing speed is reduced, is slowly added to polyacrylamide and polyvinyl alcohol, 1000~1500rpm is quickly stirred
20min is completely dissolved it, produces the friction reducer.
Embodiment 3
Present embodiment discloses a kind of macromolecule friction-reducing agent of fracturing fluid, including each component that weight proportion is following：
The Molecular Weight for Polyacrylamide is 100-200 ten thousand；The surfactant is DTAC；
The organic solvent is ethanol or white oil；The surfactant is Tween 80；The conductive agent is sodium chloride.
The preparation method of the macromolecule friction-reducing agent of fracturing fluid, comprises the following steps：
1) surfactant is added in organic solvent, be slowly stirred to well mixed；
2) water-absorbing resin gel is added, is slowly stirred 5-20min, rear 1500~2000rpm high-speed stirreds 5-10min；
3) mixing speed is reduced, is slowly added to expansion-resisting agent, polyacrylamide and polyvinyl alcohol, 1000~1500rpm is quick
Stirring 10-20min is completely dissolved it, produces the friction reducer.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of macromolecule friction-reducing agent of fracturing fluid, it is characterised in that including the following each component of weight proportion：
2. macromolecule friction-reducing agent of fracturing fluid according to claim 1, it is characterised in that including the following each group of weight proportion
Point：
3. macromolecule friction-reducing agent of fracturing fluid according to claim 1, it is characterised in that the Molecular Weight for Polyacrylamide is 50
Ten thousand~6,000,000.
4. macromolecule friction-reducing agent of fracturing fluid according to claim 1, it is characterised in that the surfactant is dodecyl
Trimethyl ammonium chloride.
5. macromolecule friction-reducing agent of fracturing fluid according to claim 1, it is characterised in that the organic solvent is ethanol or white oil.
6. macromolecule friction-reducing agent of fracturing fluid according to claim 1, it is characterised in that the surfactant be sorbester p17 and/
Or Tween 80.
7. macromolecule friction-reducing agent of fracturing fluid according to claim 1, it is characterised in that the conductive agent is sodium chloride.
8. macromolecule friction-reducing agent of fracturing fluid according to claim 1, it is characterised in that macromolecule friction-reducing agent of fracturing fluid also includes
Expansion-resisting agent potassium chloride.
9. the preparation method of macromolecule friction-reducing agent of fracturing fluid, comprises the following steps described in claim 1-8 any one：
1) surfactant is added in organic solvent, be slowly stirred to well mixed；
2) water-absorbing resin gel is added, is slowly stirred 5-20min, rear 1500~2000rpm high-speed stirreds 5-10min；
3) mixing speed is reduced, is slowly added to polyacrylamide and polyvinyl alcohol, 1000~1500rpm quickly stirs 10-20min
It is completely dissolved, produces the friction reducer.
10. the preparation method of macromolecule friction-reducing agent of fracturing fluid according to claim 9, polyacrylamide is added in step 3)
Expansion-resisting agent is added during with polyvinyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001023.4A CN107739601A (en) | 2017-10-24 | 2017-10-24 | A kind of macromolecule friction-reducing agent of fracturing fluid and preparation method thereof |
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| CN201711001023.4A CN107739601A (en) | 2017-10-24 | 2017-10-24 | A kind of macromolecule friction-reducing agent of fracturing fluid and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61190584A (en) * | 1985-02-18 | 1986-08-25 | Tachibana Shokai:Kk | Lubricant |
| CN1080624A (en) * | 1992-06-26 | 1994-01-12 | 陈惠民 | Super-strong moisture absorbing resin type resistance reducing agent for grounding |
| CN101752021A (en) * | 2010-02-11 | 2010-06-23 | 昆明宇恬科技工程有限公司 | Long-effective corrosion-prevention physical resistance-reducing agent |
| CN102002355A (en) * | 2010-11-01 | 2011-04-06 | 中国石油化工股份有限公司西北油田分公司工程技术研究院 | Friction-reducing agent of fracturing fluid and preparation method thereof |
| CN103045226A (en) * | 2013-01-18 | 2013-04-17 | 中国石油化工股份有限公司 | Resistance reducing agent and preparation method thereof, and slickwater fracturing fluid using resistance reducing agent and preparation method thereof |
| CN103456386A (en) * | 2013-08-26 | 2013-12-18 | 贵州航天特种车有限责任公司 | Efficient ion resistance reducing agent and preparing method thereof |
| CN104212435A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Fracturing composite thickener |
| CN104449648A (en) * | 2014-11-27 | 2015-03-25 | 陕西科技大学 | Drag reducer for slickwater fracturing on unconventional oil and gas reservoirs and preparation method of drag reducer |
-
2017
- 2017-10-24 CN CN201711001023.4A patent/CN107739601A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61190584A (en) * | 1985-02-18 | 1986-08-25 | Tachibana Shokai:Kk | Lubricant |
| CN1080624A (en) * | 1992-06-26 | 1994-01-12 | 陈惠民 | Super-strong moisture absorbing resin type resistance reducing agent for grounding |
| CN101752021A (en) * | 2010-02-11 | 2010-06-23 | 昆明宇恬科技工程有限公司 | Long-effective corrosion-prevention physical resistance-reducing agent |
| CN102002355A (en) * | 2010-11-01 | 2011-04-06 | 中国石油化工股份有限公司西北油田分公司工程技术研究院 | Friction-reducing agent of fracturing fluid and preparation method thereof |
| CN103045226A (en) * | 2013-01-18 | 2013-04-17 | 中国石油化工股份有限公司 | Resistance reducing agent and preparation method thereof, and slickwater fracturing fluid using resistance reducing agent and preparation method thereof |
| CN104212435A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Fracturing composite thickener |
| CN103456386A (en) * | 2013-08-26 | 2013-12-18 | 贵州航天特种车有限责任公司 | Efficient ion resistance reducing agent and preparing method thereof |
| CN104449648A (en) * | 2014-11-27 | 2015-03-25 | 陕西科技大学 | Drag reducer for slickwater fracturing on unconventional oil and gas reservoirs and preparation method of drag reducer |
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Application publication date: 20180227 |