CN104481490A - Coal-bed gas well nitrogen foam fracturing fluid system - Google Patents

Coal-bed gas well nitrogen foam fracturing fluid system Download PDF

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Publication number
CN104481490A
CN104481490A CN201410662689.4A CN201410662689A CN104481490A CN 104481490 A CN104481490 A CN 104481490A CN 201410662689 A CN201410662689 A CN 201410662689A CN 104481490 A CN104481490 A CN 104481490A
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CN
China
Prior art keywords
nitrogen
gas well
fracturing fluid
bed gas
fracturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410662689.4A
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Chinese (zh)
Inventor
曹运兴
周丹
田林
曹永恒
贾猛
石玢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HENAN ARK NEW ENERGY Co Ltd
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HENAN ARK NEW ENERGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CN201410662689.4A priority Critical patent/CN104481490A/en
Publication of CN104481490A publication Critical patent/CN104481490A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • 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
    • 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
    • C09K8/70—Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
    • C09K8/703—Foams
    • 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
    • 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
    • C09K2208/26—Gel breakers other than bacteria or enzymes

Abstract

The invention discloses a coal-bed gas well nitrogen foam fracturing fluid system. Nitrogen foam fracturing fluid comprises, in weight percent, 1.0% of potassium chloride, 0.2% of GCW-3K (gelatin powder), 0.1% of SUPER100 (foaming agents), 0.05% of SAS100 (breaking agents) and 98.8% of water, wherein the SUPER100 (foaming agents) and the SAS100 (breaking agents) account for the volume ratio of the prepared glue liquor. The coal-bed gas well nitrogen foam fracturing fluid system has the advantages of gel breaking rapidness, less reservoir pollution, high sand carrying capability, small filter loss, fine backflow effect, wide fracturing fracture and the like, partial pressure of methane can be reduced by nitrogen, gas in a coal-bed gas well can be rapidly desorbed, and gas yield can be improved.

Description

A kind of coal bed gas well nitrogen foam fracturing fluid system
Technical field
The present invention relates to coal bed gas well reservoir fracturing improvement fracturing fluid used, particularly relate to a kind of new proportioning of coal bed gas well nitrogen foam fracturing fluid system.
Background technology
Nitrogen foam fracturing fluid stitches as making and takes the medium of sand, and the improvement of its performance is the problem that people study always.Since the fifties carries out fracturing on a large scale, no matter fracturing fluid all there occurs great change from the formation of individual event additive, integral hydraulic fracturing formula of liquid system, desk research plant and instrument and method to on-the-spot technique for applying technology etc., particularly since the nineties, fracturing fluid system research is tending towards perfect, in fracturing fluid chemistry and on-the-spot application, played important function.
The fracturing technique that nitrogen foam fracturing fluid has grown up since being 20 century 70s, there is prop-carrying capacity strong, filter loss is little, make seam long and wide, formation damage is little, and flowback effect is good, the features such as coal dust can be carried, simultaneously nitrogen can make gas dividing potential drop, is beneficial to the raising of gas fast desorption and gas production, is specially adapted to the fracturing reform of low-pressure, hyposmosis and sensitive reservoir.In low permeability pay fracturing reform and CBM Fracturing volume increase, nitrogen foam fracturing technology is quite general in U.S.'s application, and in the coal-bed gas exploitation well of Blackwarrior basin, most construction well all adopts nitrogen foam fracturing technology.
Domestic more late to the research of nitrogen foam fracturing fluid, successively in formation fracturing transformation and CBM Fracturing volume increase, attempt application, effect is pretty good, and in order to better, more targetedly apply nitrogen foam fracturing technology, experiment and engineering test two aspect conduct in-depth research indoor.
Summary of the invention
The object of the present invention is to provide a kind of coal bed gas well nitrogen foam fracturing fluid system.
For achieving the above object, the present invention adopts following technical scheme:
(1) according to coal bed gas well FRACTURING DESIGN require get out required clear water, clear water pH value at 7-7.5, water cleaning, mechanical admixture is less than 1 ‰, solid grain size≤50 μm;
(2) with special dosing equipment, potassium chloride and GCW1 rubber powder are brought in clear water with the mass ratio circulation of 1.0% and 0.2% respectively, fully circulate, mix;
(3), during pressing crack construction, fracturing blender truck is mixed into SUPER1 blowing agent and SAS1 gel breaker in glue with the volume ratio of 0.1% and 0.05% respectively, pumps into high pressure pipe joint through fracturing car;
(4) simultaneously, liquid nitrogen pump vehicle pumps into high pressure pipe joint with the discharge capacity of FRACTURING DESIGN nitrogen, forms nitrogen foam and enter coal seam after nitrogen and glue mix in high pressure pipe joint.
Further, nitrogen foam fracturing fluid system by weight ratio: potassium chloride accounts for 1.0%, GCW1 rubber powder and accounts for 0.2%, and water accounts for 98.8%; And the volume ratio that SUPER1 blowing agent and SAS1 gel breaker are above joined glue, account for 0.1% and 0.05% respectively.
Beneficial effect of the present invention is:
The present invention has the advantages such as broken glue is fast, reservoir pollution is little, prop-carrying capacity is strong, filter loss is little, flowback effect is good, fracturing fracture is wide, and nitrogen can reduce methane partial pressure simultaneously, is beneficial to the raising of coal bed gas well gas fast desorption and gas production.
Detailed description of the invention
Below in conjunction with embodiment, describe the present invention in detail.
The object of the present invention is to provide a kind of coal bed gas well nitrogen foam fracturing fluid system.
For achieving the above object, the present invention adopts following technical scheme:
(1) according to coal bed gas well FRACTURING DESIGN require get out required clear water, clear water pH value at 7-7.5, water cleaning, mechanical admixture is less than 1 ‰, solid grain size≤50 μm;
(2) with special dosing equipment, potassium chloride and GCW1 rubber powder are brought in clear water with the mass ratio circulation of 1.0% and 0.2% respectively, fully circulate, mix;
(3), during pressing crack construction, fracturing blender truck is mixed into SUPER1 blowing agent and SAS1 gel breaker in glue with the volume ratio of 0.1% and 0.05% respectively, pumps into high pressure pipe joint through fracturing car;
(4) simultaneously, liquid nitrogen pump vehicle pumps into high pressure pipe joint with the discharge capacity of FRACTURING DESIGN nitrogen, forms nitrogen foam and enter coal seam after nitrogen and glue mix in high pressure pipe joint.
Further, nitrogen foam fracturing fluid system by weight ratio: potassium chloride accounts for 1.0%, GCW1 rubber powder and accounts for 0.2%, and water accounts for 98.8%; And the volume ratio that SUPER1 blowing agent and SAS1 gel breaker are above joined glue, account for 0.1% and 0.05% respectively.
Beneficial effect of the present invention is:
The present invention has the advantages such as broken glue is fast, reservoir pollution is little, prop-carrying capacity is strong, filter loss is little, flowback effect is good, fracturing fracture is wide, and nitrogen can reduce methane partial pressure simultaneously, is beneficial to the raising of coal bed gas well gas fast desorption and gas production.

Claims (2)

1. a coal bed gas well nitrogen foam fracturing fluid system, is characterized in that:
(1) according to coal bed gas well FRACTURING DESIGN require get out required clear water, clear water pH value at 7-7.5, water cleaning, mechanical admixture is less than 1 ‰, solid grain size≤50 μm;
(2) with special dosing equipment, potassium chloride and GCW1 rubber powder are brought in clear water with the mass ratio circulation of 1.0% and 0.2% respectively, fully circulate, mix;
(3), during pressing crack construction, fracturing blender truck is mixed into SUPER1 blowing agent and SAS1 gel breaker in glue with the volume ratio of 0.1% and 0.05% respectively, pumps into high pressure pipe joint through fracturing car;
(4) simultaneously, liquid nitrogen pump vehicle pumps into high pressure pipe joint with the discharge capacity of FRACTURING DESIGN nitrogen, forms nitrogen foam and enter coal seam after nitrogen and glue mix in high pressure pipe joint.
2. a kind of coal bed gas well nitrogen foam fracturing fluid system according to claim 1, is characterized in that, nitrogen foam fracturing fluid system by weight ratio: potassium chloride accounts for 1.0%, GCW1 rubber powder and accounts for 0.2%, and water accounts for 98.8%; And the volume ratio that SUPER1 blowing agent and SAS1 gel breaker are above joined glue, account for 0.1% and 0.05% respectively.
CN201410662689.4A 2014-11-18 2014-11-18 Coal-bed gas well nitrogen foam fracturing fluid system Pending CN104481490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410662689.4A CN104481490A (en) 2014-11-18 2014-11-18 Coal-bed gas well nitrogen foam fracturing fluid system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410662689.4A CN104481490A (en) 2014-11-18 2014-11-18 Coal-bed gas well nitrogen foam fracturing fluid system

Publications (1)

Publication Number Publication Date
CN104481490A true CN104481490A (en) 2015-04-01

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CN (1) CN104481490A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11559711B2 (en) 2017-03-01 2023-01-24 China Petroleum & Chemical Corporation Foam producing method, fire extinguishing method, and appliance for foam extinguishing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1151527A (en) * 1980-11-06 1983-08-09 Ronald S. Bullen Proppant concentrator
US5424285A (en) * 1993-01-27 1995-06-13 The Western Company Of North America Method for reducing deleterious environmental impact of subterranean fracturing processes
US20050077047A1 (en) * 2003-10-10 2005-04-14 Jiten Chatterji Methods of fracturing a subterranean formation using a pH dependent foamed fracturing fluid
CN102766450A (en) * 2012-08-15 2012-11-07 中国石油大学(华东) Nitrogen foam fracturing fluid for coal bed methane and preparation method of nitrogen foam fracturing fluid
CN102994069A (en) * 2012-12-03 2013-03-27 中国石油集团西部钻探工程有限公司 Low damage carboxymethyl hydroxypropyl guanidine gum foam fracturing fluid of low permeability gas reservoir and preparation method of low damage carboxymethyl hydroxypropyl guanidine gum foam fracturing fluid
CN102996107A (en) * 2012-12-07 2013-03-27 东营盛世石油科技有限责任公司 Fracturing process for online continuous preparation based on liquid polymer
CN103590801A (en) * 2013-11-26 2014-02-19 中国石油集团长城钻探工程有限公司 Coal bed methane horizontal well nitrogen foam fracturing mining technology

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1151527A (en) * 1980-11-06 1983-08-09 Ronald S. Bullen Proppant concentrator
US5424285A (en) * 1993-01-27 1995-06-13 The Western Company Of North America Method for reducing deleterious environmental impact of subterranean fracturing processes
US20050077047A1 (en) * 2003-10-10 2005-04-14 Jiten Chatterji Methods of fracturing a subterranean formation using a pH dependent foamed fracturing fluid
CN102766450A (en) * 2012-08-15 2012-11-07 中国石油大学(华东) Nitrogen foam fracturing fluid for coal bed methane and preparation method of nitrogen foam fracturing fluid
CN102994069A (en) * 2012-12-03 2013-03-27 中国石油集团西部钻探工程有限公司 Low damage carboxymethyl hydroxypropyl guanidine gum foam fracturing fluid of low permeability gas reservoir and preparation method of low damage carboxymethyl hydroxypropyl guanidine gum foam fracturing fluid
CN102996107A (en) * 2012-12-07 2013-03-27 东营盛世石油科技有限责任公司 Fracturing process for online continuous preparation based on liquid polymer
CN103590801A (en) * 2013-11-26 2014-02-19 中国石油集团长城钻探工程有限公司 Coal bed methane horizontal well nitrogen foam fracturing mining technology

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
河南方舟新能源股份有限公司: "氮气泡沫压裂技术", 《HTTP://WWW.HNARKS.COM/CPINFO.ASP?CPID=240》 *
程秋菊等: "氮气泡沫压裂液用作煤层气井性能研究", 《应用化工》 *
许卫等: "氮气泡沫压裂液体系的研究与应用", 《西南石油学院学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11559711B2 (en) 2017-03-01 2023-01-24 China Petroleum & Chemical Corporation Foam producing method, fire extinguishing method, and appliance for foam extinguishing

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Application publication date: 20150401

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