CN110079292A - High-content wax oil reservoir fracturing composition, high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir composite fracturing fluid - Google Patents
High-content wax oil reservoir fracturing composition, high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir composite fracturing fluid Download PDFInfo
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- CN110079292A CN110079292A CN201910222078.0A CN201910222078A CN110079292A CN 110079292 A CN110079292 A CN 110079292A CN 201910222078 A CN201910222078 A CN 201910222078A CN 110079292 A CN110079292 A CN 110079292A
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- 239000012530 fluid Substances 0.000 title claims abstract description 279
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 239000001993 wax Substances 0.000 claims abstract description 80
- 239000012188 paraffin wax Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000003381 stabilizer Substances 0.000 claims abstract description 46
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 41
- 239000000654 additive Substances 0.000 claims abstract description 31
- 230000000996 additive effect Effects 0.000 claims abstract description 31
- 239000003921 oil Substances 0.000 claims description 122
- 239000003795 chemical substances by application Substances 0.000 claims description 69
- 239000007788 liquid Substances 0.000 claims description 66
- 238000007667 floating Methods 0.000 claims description 42
- 238000006073 displacement reaction Methods 0.000 claims description 24
- 238000000605 extraction Methods 0.000 claims description 24
- 239000003431 cross linking reagent Substances 0.000 claims description 18
- 230000000855 fungicidal effect Effects 0.000 claims description 16
- 239000000417 fungicide Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 13
- 239000002562 thickening agent Substances 0.000 claims description 12
- -1 hydroxypropyl Chemical group 0.000 claims description 11
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 10
- 229910052726 zirconium Inorganic materials 0.000 claims description 10
- 239000004971 Cross linker Substances 0.000 claims description 9
- 239000011324 bead Substances 0.000 claims description 9
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 239000003002 pH adjusting agent Substances 0.000 claims description 5
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 79
- 239000007924 injection Substances 0.000 description 79
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 52
- 238000010793 Steam injection (oil industry) Methods 0.000 description 29
- 239000001103 potassium chloride Substances 0.000 description 26
- 235000011164 potassium chloride Nutrition 0.000 description 26
- 238000004519 manufacturing process Methods 0.000 description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 16
- 239000003129 oil well Substances 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 108010010803 Gelatin Proteins 0.000 description 11
- 239000008273 gelatin Substances 0.000 description 11
- 229920000159 gelatin Polymers 0.000 description 11
- 235000019322 gelatine Nutrition 0.000 description 11
- 235000011852 gelatine desserts Nutrition 0.000 description 11
- 244000007835 Cyamopsis tetragonoloba Species 0.000 description 9
- 239000010779 crude oil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 239000010865 sewage Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000002068 microbial inoculum Substances 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 229910021538 borax Inorganic materials 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 239000004328 sodium tetraborate Substances 0.000 description 5
- 235000010339 sodium tetraborate Nutrition 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000013475 authorization Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 125000002370 organoaluminium group Chemical group 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- AGIAFGCENAKLNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid;iron Chemical group [Fe].CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O AGIAFGCENAKLNP-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 239000003348 petrochemical agent Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- GCGWQXSXIREHCF-UHFFFAOYSA-N 2-[bis(2-hydroxyethyl)amino]ethanol;zirconium Chemical group [Zr].OCCN(CCO)CCO GCGWQXSXIREHCF-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- DNXNYEBMOSARMM-UHFFFAOYSA-N alumane;zirconium Chemical compound [AlH3].[Zr] DNXNYEBMOSARMM-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical group [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229920013818 hydroxypropyl guar gum Polymers 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
-
- 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
- C09K8/84—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
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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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- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Lubricants (AREA)
Abstract
The present invention relates to a kind of high-content wax oil reservoir fracturing composition, high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir composite fracturing fluids, belong to oilfield exploitation technical field.High-content wax oil reservoir fracturing composition of the invention, the component including following parts by weight: 10 parts of water base paraffin remover, 0.2 part of cleanup additive, 1 part of stabilizer, 1.5 portions of pour-point depressants.High-content wax oil reservoir of the invention is used in combination with fracturing composition using water base paraffin remover, pour-point depressant, is greatly reduced the appearance of the wax deposition phenomenon in oil reservoir, be can be improved the recovery ratio when exploitation of high-content wax oil reservoir.
Description
Technical field
The present invention relates to a kind of high-content wax oil reservoir fracturing composition, high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir use
Composite fracturing fluid belongs to oilfield exploitation technical field.
Background technique
With the deepening of petroleum exploration & development degree, it is found that the difficulty of high-quality petroleum reserves increases.How to improve height to contain
The development effectiveness of wax, high-solidification point heavy crude reservoir improves its recovery ratio as the task of top priority.Henan Oil Field has viscous crude abundant
Oil reservoir resource, oil reservoir have the characteristics that permeability is not high, reservoir is thin, crude oil is thick, and wax deposition, blocking are seriously to restrict when exploitation
The influence factor of such oil reservoir economical and effective exploitation.
Application publication number is that the Chinese invention patent of CN106590609A discloses a kind of fracturing fluid, including thickening agent, thick
Change auxiliary agent, cleanup additive, clay stabilizer, fungicide, pH adjusting agent, antisludging agent, crosslinking agent, gel breaker, water, thickening agent is hydroxypropyl
Base guar gum, densification aid are kaolin.The fracturing fluid cost low and high temperature anti-shear performance is good, still, oil higher for the content of wax
For hiding, there is certain limitations in terms of improving oil production for the fracturing fluid.
Summary of the invention
The purpose of the present invention is to provide a kind of high-content wax oil reservoir pressure breaks of oil production that can be improved high-content wax oil reservoir
Composition.
The object of the invention is also to provide a kind of high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir composite fracturing fluids.
To achieve the above object, technical scheme is as follows:
A kind of high-content wax oil reservoir fracturing composition, the component including following parts by weight: 1-12 parts of water base paraffin remover,
0.01-0.29 parts of cleanup additive, 0.5-2 parts of stabilizer, 0.02-2.5 parts of pour-point depressant.
High-content wax oil reservoir of the invention is used in combination with fracturing composition using paraffin remover, pour-point depressant, and oil is greatly reduced
The appearance of wax deposition phenomenon in layer, can be improved the recovery ratio when exploitation of high-content wax oil reservoir.
A kind of high-content wax oil reservoir fracturing fluid, by forming following weight percentage components: the water base paraffin remover of 1-12%,
The cleanup additive of 0.01-0.29%, the stabilizer of 0.5-2%, 0.02-2.5% pour-point depressant, surplus is water.
A kind of high-content wax oil reservoir composite fracturing fluid, including pretreatment fluid and fracturing fluid, the fracturing fluid include prepad fluid,
Load fluid, displacement fluid, the pretreatment fluid by forming following weight percentage components: paraffin remover, the 0.01- of 1-12%
0.29% cleanup additive, the stabilizer of 0.5-2%, 0.02-2.5% pour-point depressant, surplus is water.
The prepad fluid includes crosslinked fluid, active liquid；The crosslinked fluid consists of the following components in percentage by mass:
The thickening agent of 0.15-0.35%, the fungicide of 0.2-1.0%, the stabilizer of 0.5-1%, 0.05-0.2% fracturing extraction assistant,
The pH regulator of 0.02-0.08%, the crosslinking agent of 0.02-0.5%, surplus are water；The activity liquid is by following mass percent
Group be grouped as: the stabilizer of 0.5-1.0%, the fracturing extraction assistant of 0.05-0.2%, surplus be water；The crosslinked fluid and activity
The volume ratio of liquid is 12-22:18-23.
The thickening agent is one or both of hydroxypropyl guar, polyacrylamide.
The fungicide is one or both of formaldehyde, dodecyl trimethyl ammonium chloride.
The crosslinking agent is the combination of one or more of borate crosslinker, organic zirconium crosslinker.
The activity liquid further includes floating agent, the stabilizer, fracturing extraction assistant, floating agent mass ratio be 0.3-1.2:
0.01-0.2:0.7-4.
The floating agent is floating bead.
The load fluid includes crosslinked fluid and proppant, and the crosslinked fluid consists of the following components in percentage by mass:
The thickening agent of 0.15-0.35%, the fungicide of 0.2-1.0%, the stabilizer of 0.5-1%, 0.05-0.2% fracturing extraction assistant,
The crosslinking agent of the pH regulator of 0.02-0.08%, 0.02-0.5%, surplus is water；The proppant is ceramsite propping agent or low
The volume ratio of multidensity quartz sand, the proppant and crosslinked fluid is 12.41-15.41:39-75.
Specific embodiment
Technical solution of the present invention is described further combined with specific embodiments below.
High-content wax oil reservoir fracturing composition of the invention includes the component of following parts by weight: 1-12 parts of paraffin remover,
0.01-0.29 parts of cleanup additive, 0.5-2 parts of stabilizer, 0.02-2.5 parts of pour-point depressant.
High-content wax oil reservoir of the invention is with fracturing fluid by forming following weight percentage components: the paraffin remover of 1-12%,
The cleanup additive of 0.01-0.29%, the stabilizer of 0.5-2%, 0.02-2.5% pour-point depressant, surplus is water.
In above-mentioned high-content wax oil reservoir fracturing composition and high-content wax oil reservoir fracturing fluid, paraffin remover is in the prior art
Paraffin remover, it is preferred that use " the paraffin remover experimental study of the quasi- basin Ge Er spring scenery oil field " (Zheng Yancheng etc., petroleum gas journal,
2 months 2012, the 2nd phase of volume 34, the 145-147 pages) in paraffin remover or " desk research of paraffin removal from oil well visbreaking agent " (rely
Yan Ling, Zheng Yancheng, Xinjiang petroleum geology, in December, 2011, the phase of volume 32 the 6th, 678-680 pages) in paraffin remover.
In above-mentioned high-content wax oil reservoir fracturing composition and high-content wax oil reservoir fracturing fluid, the stabilizer be potassium chloride,
The combination of one or more of ammonium chloride.
In above-mentioned high-content wax oil reservoir fracturing composition and high-content wax oil reservoir fracturing fluid, the cleanup additive is the prior art
In cleanup additive, it is preferred that using Beijing Baofeng spring Petrotechnik Ltd. produce pressure break demulsification cleanup agent
(http://www.bfckj.com/product_detail/id/5.html)。
The pour-point depressant uses pour-point depressant in the prior art, it is preferred that pour-point depressant uses " phenylethylene-maleic anhydride-the third
The synthesis and its pour point depression performance of olefin(e) acid stearyl terpolymer " (Li Kehua, Wu Jiazhong, Zheng Yancheng etc., fine petroleum
Work progress, 2001, (4) phase of volume 2,16-18 pages) in pour-point depressant, or " synthesis of crude oil with high solidifying point pour-point depressant and compatibility
Can research " pour-point depressant in (Zheng Yancheng etc., oil and gas chemical industry, 2012, the 1st phase of volume 41,70-73, page 89).
The water is field joint stations treated purification sewage or oil field locality river water.
High-content wax oil reservoir composite fracturing fluid of the invention, including pretreatment fluid and fracturing fluid, before the fracturing fluid includes
Liquid, load fluid, displacement fluid are set, the pretreatment fluid by forming following weight percentage components: the paraffin remover of 1-12%,
The cleanup additive of 0.01-0.29%, the stabilizer of 0.5-2%, 0.02-2.5% pour-point depressant, surplus is water.Further, the institute
Stating prepad fluid includes crosslinked fluid, active liquid；The crosslinked fluid consists of the following components in percentage by mass: 0.15-0.35%'s
Thickening agent, the fungicide of 0.2-1.0%, the stabilizer of 0.5-1%, the fracturing extraction assistant of 0.05-0.2%, 0.02-0.08%
The crosslinking agent of pH adjusting agent, 0.02-0.5%, surplus are water；The activity liquid consists of the following components in percentage by mass:
The fracturing extraction assistant of the stabilizer of 0.5-1.0%, 0.05-0.2%, surplus is water；The volume ratio of the crosslinked fluid and active liquid
For 12-22:18-23.
The thickening agent is one or both of hydroxypropyl guar, polyacrylamide.
The fungicide is one or both of formaldehyde, dodecyl trimethyl ammonium chloride.
The crosslinking agent is the combination of one or more of borate crosslinker, organic zirconium crosslinker.The borate crosslinker is
Borax.The organic zirconium crosslinker is (triethanolamine) zirconium of borax four or organic zirconium crosslinker be application publication number is CN
A kind of Chinese invention patent application (organo-aluminium zirconium crosslink agent, preparation method and the low polymer pressure break of 104371699A
Liquid) in organo-aluminium zirconium crosslink agent.
The activity liquid further includes floating agent, the stabilizer, fracturing extraction assistant, floating agent mass ratio be 0.3-1.2:
0.01-0.2:0.7-4.The floating agent is floating bead.The floating bead partial size is 200 mesh to 60 mesh, and density is less than 0.412g/m3。
The load fluid includes crosslinked fluid and proppant, and the crosslinked fluid consists of the following components in percentage by mass:
The thickening agent of 0.15-0.35%, the fungicide of 0.2-1.0%, the stabilizer of 0.5-1%, 0.05-0.2% fracturing extraction assistant,
The crosslinking agent of the pH regulator of 0.02-0.08%, 0.02-0.5%, surplus is water；The proppant is ceramsite propping agent or low
The volume ratio of multidensity quartz sand, the proppant and crosslinked fluid is 12.41-15.41:39-75.
The stabilizer is the combination of one or more of potassium chloride, ammonium chloride.
The fracturing extraction assistant and helping in above-mentioned high-content wax oil reservoir fracturing composition and high-content wax oil reservoir fracturing fluid
Row's agent may be the same or different, it is preferred that the two is identical.Preferably, using Beijing Baofeng spring Petrotechnik Ltd.
The pressure break of production is with demulsification cleanup agent (http://www.bfckj.com/product_detail/id/5.html).
The water is field joint stations treated purification sewage or oil field locality river water.
The pH adjusting agent is the combination of one or more of sodium hydroxide, sodium bicarbonate, sodium carbonate.
The displacement fluid is original gelatin.Specifically, for the glue of hydroxypropyl guar gum or the glue of polyacrylamide.
Pretreatment liquid, prepad fluid, load fluid, displacement fluid volume ratio be 10-22:10-50:14-68:3-8.
The application method of above-mentioned high-content wax oil reservoir composite fracturing fluid, includes the following steps:
1) pretreatment fluid is heated to set temperature, injection oil reservoir carries out closing well and reacts 12-24h；
2) manufacture of intraocular crack is carried out to oil reservoir injection prepad fluid；Then crack is filled to oil reservoir injection load fluid；Then
To oil reservoir
Injection displacement fluid carries out the proppant that not can enter stratum in cleaning tubing string；
3) steam injection, production.
The high-content wax oil reservoir refers to paraffin content in the oil reservoir of 20-55.5%.
Pretreatment fluid includes above-mentioned high-content wax oil reservoir fracturing composition and water.Specifically, the pretreatment fluid is by as follows
The group of weight percent is grouped as: the paraffin remover of 1-12%, the cleanup additive of 0.01-0.29%, 0.5-2% stabilizer, 0.02-
2.5% pour-point depressant, surplus are water.
Injecting prepad fluid to oil reservoir in step 2) includes: first to carry out first stage injection prepad fluid, then carries out second-order
Section injection prepad fluid.First stage injection prepad fluid and second stage inject prepad fluid the ratio between prepad fluid injection rate volume be
20-30:10-15.The first stage injection prepad fluid includes the first crosslinked fluid injection stage successively carried out and the first activity
Liquid injection stage.The second stage injection prepad fluid includes the second active liquid injection stage successively carried out and the second crosslinked fluid
Injection stage.The first crosslinked fluid injection stage, the first active liquid injection stage, the second active liquid injection stage, second are handed over
Joining the ratio between injection rate volume of liquid injection stage is 10-15:10-15:8:2-7.
Termination of pumping is carried out between the first stage injection prepad fluid and second stage injection prepad fluid.The termination of pumping time is
8min.The ratio between the active liquid injection stage of flow and second, the injection rate volume of the second crosslinked fluid injection stage when termination of pumping are 8:
15-20:2-7.
Injection flow velocity to oil reservoir injection prepad fluid is 1.5-1.8m3/ min, preferably 2m3/min。
The first crosslinked fluid injection stage and the crosslinked fluid of the second crosslinked fluid injection stage injection are above-mentioned crosslinked fluid.
Described first active liquid injection stage and the active liquid of the second active liquid injection stage injection are above-mentioned active liquid.
The prepad fluid further includes floating agent.The crosslinked fluid, active liquid, floating agent volume ratio be 10-17:3-17:
0.7-11。
It to oil reservoir injection load fluid is above to oil reservoir injection load fluid in two times in step 2)；The load fluid includes handing over
Join liquid and proppant.
The volume ratio of the proppant and crosslinked fluid is 12.41-15.41:39-75.
It to oil reservoir injection load fluid include: above to oil reservoir injection load fluid in two times in step 2).Preferably, divide 8 times
Load fluid is injected into oil reservoir.
Divide 8 times and inject load fluid into oil reservoir, 8 times the injected slurry volume ratio of crosslinked fluid is 2- when injection load fluid into oil reservoir
7:5-10: 7-12:7-12:5-10:2-7:1-5:1-5.Also divide while injecting crosslinked fluid into oil reservoir points for 8 times 8 times to oil reservoir
Middle injection proppant.Specifically, inject proppant while injecting crosslinked fluid, i.e., infused when to oil reservoir injecting crosslinked fluid every time
Enter proppant.The volume ratio of injection crosslinked fluid and proppant is 2-20:1 every time.The injected slurry volume ratio of proppant is 0.3-0.35:
0.30-0.80:1.30-1.80:2.26-2.76:2.5-3.0:2.0-2.45:1.5-2.00: 2.25.
Injection flow velocity when injecting from load fluid to oil reservoir is 1.5-3.0m3/min。
The crosslinked fluid injected when the injection load fluid is above-mentioned crosslinked fluid.
The proppant is ceramic proppant or low-density quartz sand.The granularity of the proppant is 12 mesh to 80 mesh.It is excellent
Choosing, be low-density quartz sand, and partial size is 12 mesh to 80 mesh.Proppant density is 1.3g/cm3.The addition side that proppant uses
Formula is to be blended in crosslinked fluid to be added.
Injection flow velocity when injecting from load fluid to oil reservoir is 3.1-4.0m3/ min, preferably 2.5m3/min。
The displacement fluid is original gelatin.
The crosslinked fluid used when above-mentioned injection prepad fluid, load fluid, displacement fluid is heated to 60 DEG C before injection.Above-mentioned injection
The active liquid used when prepad fluid is heated to 60 DEG C before injection.
Note thinner is carried out in step 3) before steam injection.Specifically, carrying out fracturing fluid recovery (backflow) before steam injection, returned in fracturing fluid
After row, note thinner is carried out before steam injection.The thinner by forming following weight percentage components: catalyst 0.1-20%,
Alkaline matter 0.1-25%, surplus are water.The catalyst is dodecyl benzene sulfonic acid iron.The alkaline matter is hydroxide
One of sodium, potassium hydroxide, sodium carbonate are several.
When infusing thinner, the proportion of each component in thinner is selected according to core intersection.Specifically, in core intersection
When h≤3m, thinner neutral and alkali substance, catalyst, water mass ratio be 1-3:1-2:18-22, preferably 1:1:18.In oil
Layer with a thickness of 3 < h≤5m when, thinner neutral and alkali substance, catalyst, water mass ratio be 4-7:3-6:12-16, preferably
2:3:16.Core intersection be 5 < h≤10m when, thinner neutral and alkali substance, catalyst, water mass ratio be 8-10:7-9:
5-7, preferably 4:5:12.
It is carried out after steam injection in step 3) bored well 3-7 days.
Steam injection pressure is configured according to the 55% of oil breakdown pressure value when the steam injection.
Steam injection amount when steam injection is 110-130 tons/rice.Specific steam injection amount is selected according to core intersection.In oil reservoir
When thickness h≤3m, steam injection amount is 130 tons/meter.When core intersection is 3 < h≤5m, steam injection amount is 120 tons/meter.In oil reservoir
When with a thickness of 5 < h≤10m, steam injection amount is 110 tons/meter.Steam injection rate is 100-300 ton/days.Specific steam injection rate according to
Core intersection is selected.In core intersection h≤3m, steam injection rate is 100-130 ton/days.Core intersection be 3 < h≤
When 5m, steam injection rate is 130-150 ton/days.When core intersection is 5 < h≤10m, steam injection rate is 150-200 ton/days.
Steam quality when steam injection is not less than 70%.Steam quality value is well head steam quality value.
Note Wax removing agent is carried out after steam injection.The Wax removing agent is Paraffin Removal microbial inoculum.Preferably, which can
To use Authorization Notice No. for the strong emulsibility microbial wax control microbial inoculum in the Chinese invention patent of 104109516 B of CN.?
When specifically used, the usage amount of Wax removing agent is selected according to core intersection.In general, usage amount is 250-1250kg.Specifically
, as core intersection h≤3m, the additional amount of Wax removing agent is 250-500kg.As 3 < h≤5m of core intersection, Paraffin Removal
The additional amount of agent is 500-750kg.When core intersection is 5 < h≤10m, the additional amount of Wax removing agent is 1000-1250kg.
The additional amount of Wax removing agent is individual well additional amount.
Injection nitrogen is carried out after steam injection.Specifically, injecting nitrogen after infusing Wax removing agent.Injection nitrogen amount be
1000-3000m3.The injection rate of nitrogen is individual-well injection rate.
Pretreatment fluid is heated to set temperature to heat using heating superconduction vehicle.Heating superconduction vehicle is that GKA is multi-functional
The automatic hot-washing wax remover equipment of superconduction.Heat the model GKA-B111B5 type of superconduction vehicle.
Carry out selecting well before heating pretreatment fluid, selection criteria when selecting well are as follows:
10 μm of thickness < 10m, porosity < 30%, the permeability < of the oil reservoir2, oil saturation > 30%.
The reservoir temperature is 40-80 DEG C.
Water layer distance 4-8 meter and barrier stress difference of the oil reservoir with above or below are in 3-5MPa.
Paraffin content≤55.5%, 45-60 DEG C of crude oil freezing point, viscosity (70 DEG C) are in the oil component of the oil reservoir
70.00-300.00mPa.s, crude oil standard density 0.8000-0.9200g/cm at 20 DEG C3。
The distance of steam injection well spacing producing well is no more than 150m.
The oil well is to produce 30 day, day oil-producing of period L T.LT.LT before closed time > 10 days, production before a period opening well and making production
1.0 ton/days of < of amount.
The hole deviation of oil well since kickoff point (KOP) within the scope of finishing drilling target zone, 40-80 ° of the gradient of oil well.
Stop well when oil production is lower than 1.5 ton/days, carries out next period production.
Embodiment 1
In the present embodiment, paraffin remover uses " the paraffin remover experimental study of the quasi- basin Ge Er spring scenery oil field " (Zheng Yancheng, petroleum day
Right gas journal, 2 months 2012, the 2nd phase of volume 34, the 145-147 pages) in paraffin remover.
Cleanup additive using Beijing Baofeng spring Petrotechnik Ltd. production pressure break with demulsification cleanup agent (http: //
www.bfckj.com/product_detail/id/5.html)。
Pour-point depressant uses " synthesis of phenylethylene-maleic anhydride-octadecyl acrylate terpolymer and its pour point depression
Can " (Li Kehua, Wu Jiazhong, Zheng Yancheng etc., Speciality Petrochemicals progress, 2001, (4) phase of volume 2,16-18 pages) in
Pour-point depressant.
The high-content wax oil reservoir fracturing composition of the present embodiment includes the component of following parts by weight: 12 parts of paraffin remover,
0.29 part of cleanup additive, 1 part of stabilizer, 2.5 parts of pour-point depressant.Stabilizer is potassium chloride.
The high-content wax oil reservoir fracturing fluid of the present embodiment, by forming following weight percentage components: 12% paraffin remover,
0.29% cleanup additive, 1% stabilizer, 2.5% pour-point depressant, surplus be field joint stations treated purification sewage.Stablize
Agent is potassium chloride.
The high-content wax oil reservoir composite fracturing fluid of the present embodiment, including pretreatment liquid, prepad fluid, load fluid, displacement fluid, it is preceding
Treatment fluid, prepad fluid, load fluid, displacement fluid volume ratio be 15:50:68:7.8.
Pretreatment liquid by forming following weight percentage components: 12% paraffin remover, 0.29% cleanup additive, 1%
Stabilizer, 2.5% pour-point depressant, surplus be field joint stations treated purification sewage.Stabilizer is potassium chloride.
Prepad fluid is to be made of crosslinked fluid and active liquid and floating agent.The volume ratio of crosslinked fluid and active liquid is in prepad fluid
22:23.Floating agent is floating bead.The amount of floating agent is 0.7 ton.The volume ratio of floating agent and crosslinked fluid is 1.5:22.Floating agent
Partial size is 60 mesh.
Load fluid is made of crosslinked fluid and proppant.The volume ratio of proppant and crosslinked fluid is 15.41:68 in load fluid.
Proppant is 20/40 mesh ceramsite propping agent.
Displacement fluid is original gelatin.Specifically, original gelatin is the solution of hydroxypropyl guar configuration.
The mass percentage composition of crosslinked fluid in above-mentioned prepad fluid and load fluid be 0.35% hydroxypropyl guar, 1%
Formaldehyde, 1% potassium chloride, 0.1% fracturing extraction assistant, 0.08% sodium hydroxide, 0.5% borax, surplus be locality
River water.The mass percentage composition of above-mentioned activity liquid is 1.0% potassium chloride, 0.2% fracturing extraction assistant, and surplus is local river
Water.
The application method of the high-content wax oil reservoir composite fracturing fluid of the present embodiment, includes the following steps:
(1) well is selected
The E of Henan Oil Field with the following characteristics is selected to finish 1 well:
A. the straight line well spacing of the well of the injection steam of producing well and offer driving exploitation energy is 149m.
B. the production cycle is 29 days, daily oil production before closed time is 38 days, produces before a period opening well and making production on oil well
It is 0.9 ton/day.
C. the hole deviation of oil well since kickoff point (KOP) within the scope of finishing drilling target zone, 41 ° of the gradient of oil well.
The corresponding reservoir of selected oil well and crude oil have the feature that
A. core intersection 1m, porosity 10%, 9 μm of permeability2, oil saturation 31%；
B. reservoir temperature is 80 DEG C；
C. water layer distance 4 meters and barrier stress difference of the oil reservoir with above or below are 3MPa.
D. paraffin content 22% in oil component, 45 DEG C of crude oil freezing point, (70 DEG C) of viscosity be 70mPa.s, crude oil at 20 DEG C
Standard density 0.8012g/cm3。
(2) it pre-processes
Pretreatment fluid is heated to 60 DEG C using heating superconduction vehicle, pretreatment fluid is grouped by the group of following mass percent
At: 12% paraffin remover, 0.29% cleanup additive, 2% potassium chloride, 2.5% pour-point depressant, surplus are local river water.
Heating superconduction vehicle is specially the automatic hot-washing wax remover equipment of oil field GKA Multifunctional superconducting, model: GKA-B111B5 type.
(3) pressure break mixed liquor is injected
1) prepad fluid is injected
First stage injection prepad fluid is first carried out when injecting prepad fluid, is then carried out second stage and is injected prepad fluid.First
Stage injection prepad fluid includes the first crosslinked fluid injection stage successively carried out and the first active liquid injection stage.Second stage note
Entering prepad fluid includes the second active liquid injection stage and the second crosslinked fluid injection stage successively carried out.First is successively carried out to hand over
Join liquid injection stage, the first active liquid injection stage, the second active liquid injection stage, the second crosslinked fluid injection stage, wherein
Termination of pumping 8 minutes between second active liquid injection stage and the second crosslinked fluid injection stage.The note in each stage including the termination of pumping stage
Entering the ratio between amount volume is 15:15:8:20:7.Wherein the first active liquid injection stage is additionally added 60 mesh floating agent 1.5m3.Before injection
Discharge capacity when setting liquid is 2m3/min.Floating agent is floating bead.
The crosslinked fluid of each injection stage injection by forming following weight percentage components: 0.35% hydroxypropyl guar,
0.2% formaldehyde, 1% potassium chloride, 0.2% fracturing extraction assistant, 0.08% sodium hydroxide, 0.5% borax；Surplus is
Local river water.
The active liquid of each injection stage injection by forming following weight percentage components: 1.0% potassium chloride, 0.2%
Fracturing extraction assistant, surplus is local river water.
2) load fluid is injected
It is injected the load fluid time-division 8 times to oil reservoir and injects load fluid into oil reservoir.Load fluid includes crosslinked fluid and proppant, i.e.,
Divide 8 times and injects crosslinked fluid, i.e. 1 stage of crosslinked fluid, 2 stage of crosslinked fluid, 3 stage of crosslinked fluid, 4 stage of crosslinked fluid, friendship into oil reservoir
Join 5 stage of liquid, 6 stage of crosslinked fluid, 7 stage of crosslinked fluid, 8 stage of crosslinked fluid, each cross-linking stage injects proppant simultaneously.
8 times into oil reservoir, the injected slurry volume ratio of crosslinked fluid is 7:10:12:12:10:7:5:5 when injection load fluid.Proppant
Injected slurry volume ratio be 0.35:0.80:1.80:2.76:3.0:2.45:2.00:2.25.
Discharge capacity when injecting from load fluid to oil reservoir is 2.5m3/min。
The crosslinked fluid injected when injecting load fluid by forming following weight percentage components:
0.35% hydroxypropyl guar, 0.2% formaldehyde, 1% potassium chloride, 0.2% fracturing extraction assistant, 0.08%
Sodium hydroxide, 0.5% borax；Surplus is local river water.
60 DEG C or more are heated to using superconduction vehicle before crosslinked fluid injection.Proppant is ceramic proppant.The granularity of proppant
For 20/40 mesh.
3) displacement fluid is injected
Displacement fluid uses original gelatin.Injection rate is 7.8m3, injection length 3.1min.
Each stage injection parameter is as shown in table 1:
The construction parameter of each injection stage in 1 embodiment 1 of table
Note: " sand " refers to proppant in table.
Glue discharge capacity refers under a fixed displacement in table, the relationship between the cross-linked dosage being pumped into and liquid volume.Specifically,
Glue discharge capacity means that crosslinking agent makes the fracturing fluid base fluid as gruel, when becoming g., jelly-like gel, when pump truck pump is infused
The unit ratio of the crosslinking agent of addition.
(4) steam injection produces
1) pressure break mixed liquor, which returns, drains into ground.Cracking and catalyzing from oil pipe to stratum injection for heavy oil exploitation via steam injection drops
Stick (can refer to the thinner in the Chinese invention patent that Authorization Notice No. is 101418213 B of CN), and thinner is by hydroxide
Sodium, dodecyl benzene sulfonic acid iron, water composition, the mass ratio of three are 1:1:18.
2) start the period 1: injection water vapour, after the completion of steam injection, bored well reacts 7 days.
Steam injection pressure: the pressure that well head fills the water steam is calculated by the 55% of oil breakdown pressure value.
Period 1 steam injection amount is 130 tons/meter.
Steam injection rate: 100 ton/days.
Steam injection mass dryness fraction: steam quality 70% (well head).
3) injecting strong emulsibility microbial wax control microbial inoculum to stratum from casing (can refer to Authorization Notice No. as CN
Paraffin Removal microbial inoculum in the Chinese invention patent of 104109516 B).Paraffin Removal microbial inoculum includes the first pseudomonas aeruginosa
(CGMCC1.2814), the second pseudomonas aeruginosa (CGMCC1.10452) and earth's surface ground bacillus (CGMCC1.2673), bacterium
Agent is solid-state dry powder, and the mass ratio of three kinds of bacterium dry powder is 1:1:1.This kind of Paraffin Removal microbial inoculum additional amount is 250kg.
4) start second round: injecting nitrogen from oil pipe to stratum, the amount for injecting nitrogen is 1000m3, nitrogen injection completion
Afterwards, normal opening well and making production.
When well is then stopped in oil production≤1.5 ton/day, into the production of next period.I.e. when oil well output≤1.5 tpd,
Again above-mentioned steps are pressed, above-mentioned steps is repeated and oil well is exploited.
Embodiment 2
In the present embodiment, paraffin remover uses " desk research of paraffin removal from oil well visbreaking agent " (Lai Yanling, Zheng Yancheng, Xinjiang stone
Oily geology, in December, 2011, the phase of volume 32 the 6th, 679-680 pages) in paraffin remover.
Cleanup additive using Beijing Baofeng spring Petrotechnik Ltd. production pressure break with demulsification cleanup agent (http: //
www.bfckj.com/product_detail/id/5.html)。
Pour-point depressant is using " synthesis of crude oil with high solidifying point pour-point depressant and compound property research " (Zheng Yancheng, oil and gas
Work, 2012, the 1st phase of volume 41,70-73, page 89) in pour-point depressant.
The high-content wax oil reservoir fracturing composition of the present embodiment includes the component of following parts by weight: 1 part of paraffin remover,
0.01 part of cleanup additive, 0.5 part of stabilizer, 0.02 portion of pour-point depressant.Stabilizer is potassium chloride.
The high-content wax oil reservoir fracturing fluid of the present embodiment, by forming following weight percentage components: 1% paraffin remover,
0.01% cleanup additive, 0.5% stabilizer potassium chloride, 0.02% pour-point depressant, surplus are the purified dirt of field joint stations
Water.
The high-content wax oil reservoir composite fracturing fluid of the present embodiment, including pretreatment liquid, prepad fluid, load fluid, displacement fluid, it is preceding
Treatment fluid, prepad fluid, load fluid, displacement fluid volume ratio be 10:10:20:3.
Pretreatment liquid by forming following weight percentage components: 1% paraffin remover, 0.01% cleanup additive, 0.5%
Stabilizer, 0.02% pour-point depressant, surplus are the purified sewage of field joint stations.Stabilizer is potassium chloride.
Prepad fluid is to be made of crosslinked fluid and active liquid and floating agent.The volume ratio of crosslinked fluid and active liquid is in prepad fluid
20:22.Floating agent is floating bead.The amount of floating agent is 3 tons.The volume ratio of floating agent and crosslinked fluid is 7:20.The partial size of floating agent
For 100 mesh.
Load fluid is made of crosslinked fluid and proppant.The volume ratio of proppant and crosslinked fluid is 14.59:61 in load fluid.
Proppant is 16/30 mesh ceramsite propping agent.
Displacement fluid is original gelatin.Specifically, original gelatin is the liquid that pressure break polymer thickening agent is prepared.Specially poly- third
The liquid that acrylamide is prepared.
The mass percentage composition of crosslinked fluid in above-mentioned prepad fluid and load fluid be 0.15% polyacrylamide,
0.2% fungicide, 0.5% potassium chloride, 0.05% fracturing extraction assistant, 0.02% sodium bicarbonate, 0.02% it is organic
Zirconium crosslink agent, surplus are local river water.Fungicide is formaldehyde, and organic zirconium crosslinker is that application publication number is CN 104371699A
Chinese invention patent application (a kind of organo-aluminium zirconium crosslink agent, preparation method and low polymer fracturing fluid) in it is organic
Aluminium zirconium crosslink agent.The mass percentage composition of above-mentioned activity liquid is 1.0% potassium chloride, 0.2% fracturing extraction assistant, and surplus is
Water.
The application method of the high-content wax oil reservoir composite fracturing fluid of the present embodiment is the same as embodiment 1.
Embodiment 3
In the present embodiment, paraffin remover uses " the paraffin remover experimental study of the quasi- basin Ge Er spring scenery oil field " (Zheng Yancheng, petroleum day
Right gas journal, 2 months 2012, the 2nd phase of volume 34, the 145-147 pages) in paraffin remover.
Cleanup additive using Beijing Baofeng spring Petrotechnik Ltd. production pressure break with demulsification cleanup agent (http: //
www.bfckj.com/product_detail/id/5.html)。
Pour-point depressant is using " synthesis of crude oil with high solidifying point pour-point depressant and compound property research " (Zheng Yancheng, oil and gas
Work, 2012, the 1st phase of volume 41,70-73, page 89) in pour-point depressant.
The high-content wax oil reservoir fracturing composition of the present embodiment includes the component of following parts by weight: 2 parts of paraffin remover,
0.1 part of cleanup additive, 1 part of stabilizer, 1.5 parts of pour-point depressant.Stabilizer is potassium chloride.
The high-content wax oil reservoir fracturing fluid of the present embodiment, by forming following weight percentage components: 2% paraffin remover,
0.1% cleanup additive, 1% stabilizer, 1.5% pour-point depressant, surplus are local river water.Stabilizer is potassium chloride.
The high-content wax oil reservoir composite fracturing fluid of the present embodiment, including pretreatment liquid, prepad fluid, load fluid, displacement fluid, it is preceding
Treatment fluid, prepad fluid, load fluid, displacement fluid volume ratio be 15:14:16:5.
Pretreatment liquid by forming following weight percentage components: 2% paraffin remover, 0.1% cleanup additive, 1% it is steady
Determine agent, 1.5% pour-point depressant, surplus is local river water.Stabilizer is potassium chloride.
Prepad fluid is to be made of crosslinked fluid and active liquid and floating agent.The volume ratio of crosslinked fluid and active liquid is in prepad fluid
15:19.Floating agent is floating bead.The amount of floating agent is 5m3.The partial size of floating agent is 80 mesh.The amount and crosslinked fluid or work of floating agent
The volume ratio 5:15 of property liquid.
Load fluid is made of crosslinked fluid and proppant.The volume ratio of proppant and crosslinked fluid is 13.31:39 in load fluid.
Proppant is 30/50 mesh ceramsite propping agent.
Displacement fluid is original gelatin.Specifically, original gelatin is the liquid that hydroxypropyl guar is prepared.
Hydroxypropyl guar that the mass percentage composition of crosslinked fluid in above-mentioned prepad fluid and load fluid is 0.2%, 1%
Fungicide, 1% potassium chloride, 0.07% fracturing extraction assistant, 0.05% sodium bicarbonate, 0.5% crosslinking agent, surplus are
Water.Fungicide is formaldehyde, and crosslinking agent is identical as the crosslinking agent in embodiment 2.The mass percentage composition of above-mentioned activity liquid is 1%
Potassium chloride, 0.2% fracturing extraction assistant, surplus is water.
The application method of the high-content wax oil reservoir composite fracturing fluid of the present embodiment is the same as embodiment 1.
Embodiment 4
In the present embodiment, paraffin remover uses " desk research of paraffin removal from oil well visbreaking agent " (Lai Yanling, Zheng Yancheng, Xinjiang stone
Oily geology, in December, 2011, the phase of volume 32 the 6th, 679-680 pages) in paraffin remover.
Cleanup additive using Beijing Baofeng spring Petrotechnik Ltd. production pressure break with demulsification cleanup agent (http: //
www.bfckj.com/product_detail/id/5.html)。
Pour-point depressant uses " synthesis of phenylethylene-maleic anhydride-octadecyl acrylate terpolymer and its pour point depression
Can " (Li Kehua, Wu Jiazhong, Zheng Yancheng etc., Speciality Petrochemicals progress, 2001, (4) phase of volume 2,16-18 pages) in
Pour-point depressant.
The high-content wax oil reservoir fracturing composition of the present embodiment includes the component of following parts by weight: 10 parts of paraffin remover,
0.18 part of cleanup additive, 1.1 parts of stabilizer, 1.8 parts of pour-point depressant.Stabilizer is potassium chloride.
The high-content wax oil reservoir fracturing fluid of the present embodiment, by forming following weight percentage components: 10% paraffin remover,
0.18% cleanup additive, 1.1% stabilizer, 1.8% pour-point depressant, surplus are the purified sewage of field joint stations.Stablize
Agent is potassium chloride.
The high-content wax oil reservoir composite fracturing fluid of the present embodiment, including pretreatment liquid, prepad fluid, load fluid, displacement fluid, it is preceding
Treatment fluid, prepad fluid, load fluid, displacement fluid volume ratio be 22:28:14:3.
Pretreatment liquid by forming following weight percentage components: 10% paraffin remover, 0.18% cleanup additive, 1.1%
Stabilizer, 1.8% pour-point depressant, surplus be multi-purpose station purify sewage.Stabilizer is potassium chloride.
Prepad fluid is to be made of crosslinked fluid and active liquid and floating agent.The volume ratio of crosslinked fluid and active liquid is in prepad fluid
12:18.Floating agent is floating bead.The amount of floating agent is 9 tons.The volume ratio of floating agent and crosslinked fluid is 21:12.The partial size of floating agent
For 40 mesh.
Load fluid is made of crosslinked fluid and proppant.The volume ratio of proppant and crosslinked fluid is 12.41:75 in load fluid.
Proppant is 30/50 mesh ceramsite propping agent.
Displacement fluid is original gelatin.Specifically, original gelatin is polymer fracturing fluid solution, specially polyacrylamide is prepared
Liquid.
The mass percentage composition of crosslinked fluid in above-mentioned prepad fluid and load fluid be 0.3% hydroxypropyl guar, 0.9%
Fungicide, 0.2% potassium chloride, 0.1% fracturing extraction assistant, 0.06% sodium hydroxide, 0.4 crosslinking agent, surplus is
Water.Fungicide is formaldehyde, and crosslinking agent is identical as the crosslinking agent in embodiment 2.The mass percentage composition of above-mentioned activity liquid is 1%
Potassium chloride, 0.2% fracturing extraction assistant, surplus is water.
The application method of the high-content wax oil reservoir composite fracturing fluid of the present embodiment is the same as embodiment 1.
Embodiment 5
High-content wax oil reservoir fracturing composition, high-content wax oil reservoir fracturing fluid and high-content wax oil reservoir in the present embodiment is with again
Conjunction fracturing fluid is identical as in embodiment 1, and the application method of composite fracturing fluid takes the pretreatment fluid injection oil without preheating
Well is pre-processed, meanwhile, prepad fluid, load fluid, displacement fluid are respectively adopted method in the prior art and disposably inject, preposition
Liquid and load fluid no longer inject stage by stage.
Oil well in embodiment 1-5 is as shown in table 2 using comparative situation before and after composite fracturing fluid of the invention, uses this hair
Before bright composite fracturing fluid and use fracturing fluid in the prior art.
Oil well in 2 embodiment 1-5 of table is using situation comparison before and after composite fracturing fluid of the invention
As can be seen from the table, after using composite fracturing fluid of the invention, the solidification of fluid viscosity in reservoir, wax is reduced
Point, oil density, pump efficiency improve the degree of perfection and pressing crack construction effect of oil well transformation, improve heavy crude reservoir on the whole
Yield, solve the problems, such as well recovery low efficiency, realize the Efficient Development of oil reservoir.
Claims (10)
1. a kind of high-content wax oil reservoir fracturing composition, which is characterized in that the component including following parts by weight: 1-12 parts of water
Base paraffin remover, 0.01-0.29 parts of cleanup additive, 0.5-2 parts of stabilizer, 0.02-2.5 parts of pour-point depressant.
2. a kind of high-content wax oil reservoir fracturing fluid, which is characterized in that by forming following weight percentage components: the water of 1-12%
Base paraffin remover, the cleanup additive of 0.01-0.29%, the stabilizer of 0.5-2%, 0.02-2.5% pour-point depressant, surplus is water.
3. a kind of high-content wax oil reservoir composite fracturing fluid, which is characterized in that including pretreatment fluid and fracturing fluid, the fracturing fluid packet
Prepad fluid, load fluid, displacement fluid are included, the pretreatment fluid by forming following weight percentage components: the paraffin remover of 1-12%,
The cleanup additive of 0.01-0.29%, the stabilizer of 0.5-2%, 0.02-2.5% pour-point depressant, surplus is water.
4. high-content wax oil reservoir composite fracturing fluid according to claim 3, which is characterized in that the prepad fluid includes
Crosslinked fluid, active liquid；The crosslinked fluid consists of the following components in percentage by mass: thickening agent, the 0.2- of 0.15-0.35%
1.0% fungicide, the stabilizer of 0.5-1%, the fracturing extraction assistant of 0.05-0.2%, 0.02-0.08% pH adjusting agent,
The crosslinking agent of 0.02-0.5%, surplus are water；The activity liquid consists of the following components in percentage by mass: 0.5-1.0%'s
Stabilizer, the fracturing extraction assistant of 0.05-0.2%, surplus are water；The volume ratio of the crosslinked fluid and active liquid is 12-22:18-
23。
5. high-content wax oil reservoir composite fracturing fluid according to claim 4, which is characterized in that the thickening agent is hydroxypropyl
One or both of guanidine glue, polyacrylamide.
6. high-content wax oil reservoir composite fracturing fluid according to claim 4, which is characterized in that the fungicide be formaldehyde,
One or both of dodecyl trimethyl ammonium chloride.
7. high-content wax oil reservoir composite fracturing fluid according to claim 4, which is characterized in that the crosslinking agent is boron crosslinking
The combination of one or more of agent, organic zirconium crosslinker.
8. high-content wax oil reservoir composite fracturing fluid according to claim 4, which is characterized in that it is described activity liquid further include on
Floating agent, the stabilizer, fracturing extraction assistant, floating agent mass ratio be 0.3-1.2:0.01-0.2:0.7-4.
9. high-content wax oil reservoir composite fracturing fluid according to claim 8, which is characterized in that the floating agent is floating bead.
10. high-content wax oil reservoir composite fracturing fluid according to claim 3, which is characterized in that the load fluid includes handing over
Connection liquid and proppant, the crosslinked fluid consist of the following components in percentage by mass: thickening agent, the 0.2- of 0.15-0.35%
1.0% fungicide, the stabilizer of 0.5-1%, the fracturing extraction assistant of 0.05-0.2%, 0.02-0.08% pH adjusting agent,
The crosslinking agent of 0.02-0.5%, surplus are water；The proppant be ceramsite propping agent or low-density quartz sand, the proppant with
The volume ratio of crosslinked fluid is 12.41-15.41:39-75.
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