CN108102633A - Viscoelastic acid-based fracturing fluid and preparation method thereof - Google Patents
Viscoelastic acid-based fracturing fluid and preparation method thereof Download PDFInfo
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- CN108102633A CN108102633A CN201711142436.4A CN201711142436A CN108102633A CN 108102633 A CN108102633 A CN 108102633A CN 201711142436 A CN201711142436 A CN 201711142436A CN 108102633 A CN108102633 A CN 108102633A
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- acid
- fracturing fluid
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- viscoplasticity
- thickening agent
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- 239000012530 fluid Substances 0.000 title claims abstract description 90
- 239000002253 acid Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002562 thickening agent Substances 0.000 claims abstract description 32
- -1 ion salt Chemical class 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000007797 corrosion Effects 0.000 claims abstract description 19
- 238000005260 corrosion Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 22
- 230000002378 acidificating effect Effects 0.000 claims description 15
- 235000011167 hydrochloric acid Nutrition 0.000 claims description 15
- REZZEXDLIUJMMS-UHFFFAOYSA-M dimethyldioctadecylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCCCCCC REZZEXDLIUJMMS-UHFFFAOYSA-M 0.000 claims description 12
- 150000002500 ions Chemical class 0.000 claims description 8
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 7
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 5
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 5
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 5
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 5
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 5
- 239000004299 sodium benzoate Substances 0.000 claims description 5
- 235000010234 sodium benzoate Nutrition 0.000 claims description 5
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- 230000031709 bromination Effects 0.000 claims description 4
- 238000005893 bromination reaction Methods 0.000 claims description 4
- 239000001273 butane Substances 0.000 claims description 4
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 claims description 4
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 235000010352 sodium erythorbate Nutrition 0.000 claims description 4
- CIWBSHSKHKDKBQ-DUZGATOHSA-N D-isoascorbic acid Chemical compound OC[C@@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-DUZGATOHSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 claims description 2
- 229960003237 betaine Drugs 0.000 claims description 2
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 2
- 238000005660 chlorination reaction Methods 0.000 claims description 2
- ZCPCLAPUXMZUCD-UHFFFAOYSA-M dihexadecyl(dimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCCCC ZCPCLAPUXMZUCD-UHFFFAOYSA-M 0.000 claims description 2
- 150000002462 imidazolines Chemical class 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 229960004025 sodium salicylate Drugs 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 3
- YFVKHKCZBSGZPE-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-2-(propylamino)propan-1-one Chemical compound CCCNC(C)C(=O)C1=CC=C2OCOC2=C1 YFVKHKCZBSGZPE-UHFFFAOYSA-N 0.000 claims 1
- MPNXSZJPSVBLHP-UHFFFAOYSA-N 2-chloro-n-phenylpyridine-3-carboxamide Chemical compound ClC1=NC=CC=C1C(=O)NC1=CC=CC=C1 MPNXSZJPSVBLHP-UHFFFAOYSA-N 0.000 claims 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims 1
- 150000002460 imidazoles Chemical class 0.000 claims 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N isopropyl alcohol Natural products CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000003112 inhibitor Substances 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 27
- 239000003350 kerosene Substances 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 description 7
- 239000004576 sand Substances 0.000 description 7
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- 239000003190 viscoelastic substance Substances 0.000 description 3
- CAAMSDWKXXPUJR-UHFFFAOYSA-N 3,5-dihydro-4H-imidazol-4-one Chemical compound O=C1CNC=N1 CAAMSDWKXXPUJR-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- YCSMVPSDJIOXGN-UHFFFAOYSA-N CCCCCCCCCCCC[Na] Chemical compound CCCCCCCCCCCC[Na] YCSMVPSDJIOXGN-UHFFFAOYSA-N 0.000 description 2
- YXYZMHGSOKYZAF-UHFFFAOYSA-M [Cl-].C(C(=C)C)(=O)OCC[N+](C(C)(C)C)(C)C Chemical compound [Cl-].C(C(=C)C)(=O)OCC[N+](C(C)(C)C)(C)C YXYZMHGSOKYZAF-UHFFFAOYSA-M 0.000 description 2
- AJXBTRZGLDTSST-UHFFFAOYSA-N amino 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)ON AJXBTRZGLDTSST-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- BHUGZIJOVAVBOQ-UHFFFAOYSA-N 2-(propylazaniumyl)acetate Chemical compound CCCNCC(O)=O BHUGZIJOVAVBOQ-UHFFFAOYSA-N 0.000 description 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000002511 behenyl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- SQQXRXKYTKFFSM-UHFFFAOYSA-N chembl1992147 Chemical compound OC1=C(OC)C(OC)=CC=C1C1=C(C)C(C(O)=O)=NC(C=2N=C3C4=NC(C)(C)N=C4C(OC)=C(O)C3=CC=2)=C1N SQQXRXKYTKFFSM-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- PFKRTWCFCOUBHS-UHFFFAOYSA-N dimethyl(octadecyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[NH+](C)C PFKRTWCFCOUBHS-UHFFFAOYSA-N 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229940124669 imidazoquinoline Drugs 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 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
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
Classifications
-
- 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
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
-
- 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
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
-
- 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
-
- 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
- C09K2208/30—Viscoelastic surfactants [VES]
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Lubricants (AREA)
Abstract
The invention provides a viscoelastic acid-based fracturing fluid and a preparation method thereof. The composition of the viscoelastic acid-based fracturing fluid of the invention comprises: a thickening agent: 2.0-7.5 parts by weight; 31-37 wt.% concentrated hydrochloric acid: 50.0 to 75.0 parts by weight; a counter ion salt: 0.5-2.5 parts by weight; corrosion inhibitor: 0.5-2.5 parts by weight; iron ion stabilizer: 1.5-5.0 parts by weight. The system of the invention is strong acid, high temperature resistant, high viscosity, automatic gel breaking, no residue in gel breaking liquid, and has the advantages of simple raw material, low cost, convenient liquid preparation, etc.
Description
Technical field
The present invention relates to a kind of viscoplasticity acid-base fracturing fluids and preparation method thereof, belong to oil-gas mining technical field.
Background technology
The integrated waterpower of fracture acidizing adds sand Technology of Compound Fracturing that can form the crack of high flow conductivity.It is currently used
Fracturing fluid is aqueous fracturing fluid, and the higher solid-carrying performance of fracturing fluid viscosity is better, aqueous fracturing fluid mainly using thickening agent guanidine glue and
Crosslinking agent borax is crosslinked in alkaline conditions, and guanidine xanthan molecule amount is all higher than 1,000,000, the easy Adsorption And Retention of guanidine glue macromolecular substances
Block reservoir fluid seepage channel, fracturing fluid residue blocks supporting crack and filter cake fracture wall surface also results in injury.In recent years
Done substantial amounts of research work for these aspects both at home and abroad, but macromolecular substances reservoir pore Adsorption And Retention problem with
And alkaline fluids the problems such as being injured to the intrusion of reservoir, is not resolved always.In addition, regular hydrochloric acid acidification rate is fast, effect
Apart from short, acid solution viscosity need to be improved to reduce acid-rock reaction speed.
Yang Yandong is in " research of cross-linked acid acid-base fracturing fluid system " (Southwest Petrol University's master thesis, 2006)
A kind of cross-linked acid acid-base fracturing fluid system cross-linked acid is disclosed, wherein chemical synthesis cationic high-molecular compound has been selected to make
For the route of thickening agent, two are carried out with cheap acrylamide (AM) and MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride (DMC)
Member copolymerization, synthesizes a kind of new gelling agent for acid fluid CH-II, and based on thickening agent CH-II of development, development preferably goes out
Mating crosslinking agent ZJL and compound gel breaker DP.The cross-linked acid acid-base fracturing fluid system have viscosity is high, leak-off is low, frictional resistance is low,
Easily pumping, acid-rock reaction speed is slow, seam is efficient, the row of returning is easy, rheological characteristic is good, can take the series of advantages such as sand, so as to
With the purpose for realizing acid fluid system deep penetration, improving acid corrosion fracture, extending the term of validity after pressing, improve single well productivity.
But the cross-linked acid acid-base fracturing fluid system, since wherein thickening agent for polymeric substance and need to add crosslinking agent etc.
Heavy metal, therefore injury of the macromolecule to stratum can not be reduced.
The content of the invention
It is an object of the present invention to provide a kind of viscoplasticity acid-base fracturing fluid, the performance for having high temperature resistant, viscosity high,
And reduce the injury to stratum.
Another object of the present invention is to provide the preparation method of the viscoplasticity acid-base fracturing fluid.
On the one hand, the present invention provides a kind of viscoplasticity acidic group fracturing fluid compositions, said composition includes：
Thickening agent：2.0-7.5 parts by weight；
31wt.%-37wt.% concentrated hydrochloric acids：50.0-75.0 parts by weight；
Counter ion salt：0.5-2.5 parts by weight；
Corrosion inhibiter：0.5-2.5 parts by weight；
Ferrous stability：1.5-5.0 parts by weight.
Specific embodiment according to the present invention in viscoplasticity acidic group fracturing fluid compositions of the invention, further includes appropriate
Water so that the sum of each component be 100 parts by weight.
Specific embodiment according to the present invention, viscoplasticity acidic group fracturing fluid compositions of the invention, using its total weight as
100% meter, component are：
Thickening agent：2.0wt.%-7.5wt.%；
31wt.%-37wt.% concentrated hydrochloric acids：50.0wt.%-75.0wt.%；
Counter ion salt：0.5wt.%-2.5wt.%；
Corrosion inhibiter：0.5wt.%-2.5wt.%；
Ferrous stability：1.5wt.%-5.0wt.%；
Water：Surplus.
Specific embodiment according to the present invention, in viscoplasticity acidic group fracturing fluid compositions of the invention, the thickening agent
It can include hexadecyltrimethylammonium chloride, INCROQUAT TMC-80, Varisoft 432PPG, double
One or more in octadecyldimethyl ammonium chloride, lauroylamidopropyl betaine.When the mixture using various ingredients
During as thickening agent of the invention, each component can be mixed with arbitrary proportion.
Specific embodiment according to the present invention, in viscoplasticity acidic group fracturing fluid compositions of the invention, the counter ion
Salt includes the one or more in lauryl sodium sulfate, sodium salicylate, sodium benzoate, potassium chloride.When anti-using various ingredients
During ion salt, each component can be mixed with arbitrary proportion.
Specific embodiment according to the present invention, in viscoplasticity acidic group fracturing fluid compositions of the invention, the corrosion inhibiter
Including chlorination -1,6- (a- octylpyridiniums) hexane, -2 hydroxy propane of 1,3- dichlorides pyridine, bromination -1,4 (a- octylpyridiniums) fourth
One or more in alkane, oily acid based imidazolines, bis-imdazoline, benzimidazole.
Specific embodiment according to the present invention, in viscoplasticity acidic group fracturing fluid compositions of the invention, the iron ion
It is steady that stabilizer includes ironic citrate ion stabilizer, disodium edta ferrous stability, arabo-ascorbic acid iron ion
Determine the one or more in agent.
The present invention also provides a kind of viscoplasticity acid-base fracturing fluids, are by the viscoplasticity acidic group fracturing fluid compositions
Prepare what is obtained.
The present invention also provides a kind of methods for preparing viscoplasticity acid-base fracturing fluid, and the method comprising the steps of：
A, thickening agent is soluble in water, adds corrosion inhibiter, ferrous stability (it is steady not limit addition corrosion inhibiter, iron ion
Determine the sequencing of agent), concentrated hydrochloric acid is then added in, obtains acid thickening agent liquid；
B, counter ion salt is dissolved in water, obtains counter ion solution；
C, by above-mentioned acid thickening agent liquid and the miscible conjunction of counter ion, stir evenly, you can obtain viscoplasticity acidic group pressure break
Liquid system.
The preparation method of the viscoplasticity acid-base fracturing fluid of the present invention, can carry out at normal temperatures and pressures.
The viscoplasticity acidic group fracturing fluid system of the present invention be crosslinked in acid solution by surfactant and counter ion salt and
Into molecular weight is respectively less than 1000, and without any macromolecule, system is in highly acid, and high temperature resistant, viscosity are high, break glue, breaking glue solution automatically
It without residue, can realize that the integrated waterpower of fracture acidizing adds sand Technology of Compound Fracturing, grittiness is taken depending on it due to fracturing fluid
Viscosity size, the viscosity of fracturing fluid is bigger, and solid-carrying performance is better, and acid fracturing can carry the proppant into crack, while pressure break
Carry out man-made fracture around matrix acidifying, thus be acidified scope increase considerably, can not only release near wellbore zone pollution and
Filtrational resistance and the crack that can form the high flow conductivity identical with hydraulic fracturing, the acid in concurrent fracturing liquid, can release
Injury of the fracturing fluid to stratum in nearly crack wall surface leak-off band, so as to formed with higher, longer-term flow conductivity acid etching-
Compound crack is supportted, thoroughly improves the percolation ability near wellbore zone and nearly crack area.
Generally speaking, viscoplasticity acid-base fracturing fluid of the invention and preparation method thereof has the advantages that：
1st, viscoplasticity acid-base fracturing fluid provided by the invention can be used for the integrated waterpower of fracture acidizing and add sand composite fracturing
Technology, resistance to 90 DEG C~110 DEG C of carbonate reservoir, viscosity reach 100mPas~180mPas, are carried out while pressure break
Matrix acidifying around man-made fracture, thus the scope being acidified increases considerably, and can not only release near wellbore zone pollution and seepage flow
Resistance and the crack that can form the high flow conductivity identical with hydraulic fracturing, the acid in concurrent fracturing liquid, can release and closely split
Injury of the fracturing fluid to stratum in the leak-off band of slotted wall face, it is multiple so as to form acid etching-support with higher, longer-term flow conductivity
Close crack.
2nd, traditional aqueous fracturing fluid breaks glue and is not thorough, and water insoluble matter content is big, residue is more after breaking gel, injures stratum, and
The thickening agent that viscoplasticity acid-base fracturing fluid uses is surfactant, and molecular weight is small, and the viscoplasticity acid-base fracturing fluid formed exists
It touches crude oil, water flooding or natural gas and breaks glue automatically.
3rd, viscoplasticity acid-base fracturing fluid of the invention has many advantages, such as that raw material is simple, at low cost, convenient with liquid.
Description of the drawings
Fig. 1 is that the acid-base fracturing fluid viscosity of dioctadecyl dimethyl ammonium chloride varies with temperature.
Fig. 2 is that the acid-base fracturing fluid viscosity of lauroylamidopropyl betaine varies with temperature.
Fig. 3 is that the acid-base fracturing fluid viscosity of INCROQUAT TMC-80 varies with temperature.
Specific embodiment
In order to which technical characteristic, purpose and the advantageous effect to the present invention are more clearly understood, now to the skill of the present invention
Art scheme carry out it is described further below, but it is not intended that the present invention can practical range restriction.
Embodiment 1：
A kind of acid-base fracturing fluid is present embodiments provided, by percentage to the quality：
Thickening agent：Dioctadecyl dimethyl ammonium chloride 7.5wt.%
31wt.% concentrated hydrochloric acids：50.0wt.%
Counter ion salt：Lauryl sodium sulfate 0.5wt.%
Corrosion inhibiter：Bis-imdazoline 0.5wt.%
Ferrous stability：Disodium edta ferrous stability 1.5wt.%
Surplus is water.
Specifically preparation process is：
According to aforementioned proportion, dioctadecyl dimethyl ammonium chloride is added to the water abundant dissolving under room temperature, successively plus
Enter corrosion inhibiter bis-imdazoline 3, disodium edta class ferrous stability, 31wt.% concentrated hydrochloric acids, obtain acid thickening
Agent solution, counter ion salt lauryl sodium sulfate is soluble in water, then two kinds of solution are mixed, and stirs evenly, you can obtain viscoelastic
Property acid-base fracturing fluid system, data such as table 1.
1 dioctadecyl dimethyl ammonium chloride acid-base fracturing fluid viscosity of table varies with temperature
| Temperature/DEG C | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
| Viscosity/mPas | 120 | 115 | 110 | 100 | 60 | 30 | 20 |
Viscoplasticity acid-base fracturing fluid complete to run into after the effect of acid fracturing in the earth formation touch crude oil, water flooding or
Person's natural gas breaks gelatinization water, and otherwise visco-elastic material can have a negative impact to the acid stimulation effect on stratum.Viscoplasticity acidic group
One big feature of fracturing fluid is that the broken glue of residual acid is simply thorough, and without additional gel breaker, residual acid, which meets hydrocarbon, can break glue.
Gel breaking test 1,
Coal separation oil cooks gel breaker in experiment, and when experiment mixes acid-base fracturing fluid with kerosene according to different proportion, at 60 DEG C
And it is stirred at 90 DEG C and residual acid fracturing fluid is taken out after 60min measures viscosity (apparent viscosity ＜ 5mPas are as thorough under experimental temperature
Broken glue).Data such as table 2.
Gel breaking test 2,
Add substantial amounts of water in experiment, survey its viscosity (apparent viscosity ＜ 5mPas are thoroughly to break glue under experimental temperature).Number
According to such as table 3.
2 viscoplasticity acid-base fracturing fluid of table adds in not viscosity of the same amount kerosene after 60min at different temperatures
| Kerosene content/wt.% | 5 | 6 | 8 | 10 | 12 |
| 60 DEG C of viscosity/mPas | 4 | 3 | 2 | 1 | 1 |
| 90 DEG C of viscosity/mPas | 1 | 1 | 0 | 0 | 0 |
3 viscoplasticity acid-base fracturing fluid of table adds in the viscosity after not same amount water at different temperatures
| Water/wt.% | 100 | 200 | 300 | 400 | 500 |
| 60 DEG C of viscosity/mPas | 45 | 24 | 5 | 1 | 0 |
| 90 DEG C of viscosity/mPas | 22 | 12 | 3 | 0 | 0 |
The acid-base fracturing fluid of thickening agent dioctadecyl dimethyl ammonium chloride preparation is can be seen that with temperature from table 1 and Fig. 1
Degree rise viscosity declines, and viscosity can meet pressure break and take viscosity required by sand up to 100mPas at 90 DEG C.
From table 2 it can be seen that in 60 DEG C of low temperature, kerosene content 5wt.% can meet brokenly glue requirement, double octadecyls two
Ammonio methacrylate acid-base fracturing fluid can thoroughly break glue in 60 DEG C~90 DEG C.
From table 3 it can be seen that dioctadecyl dimethyl ammonium chloride acid-base fracturing fluid can thoroughly be broken when adding in 3 times of water
Glue.
Embodiment 2：
A kind of acid-base fracturing fluid is present embodiments provided, by percentage to the quality：
Thickening agent：Lauroylamidopropyl betaine 7.5wt.%
37wt.% concentrated hydrochloric acids：50wt.%
Counter ion salt：Potassium chloride 2.5wt.%
Corrosion inhibiter：Oleic imidazolinone 2.5wt.%
Ferrous stability：Arabo-ascorbic acid ferrous stability 4.5wt.%
Surplus is water.
Specifically preparation process is：
According to aforementioned proportion, lauroylamidopropyl betaine is added to the water abundant dissolving under room temperature, is sequentially added slow
Agent oleic imidazolinone, arabo-ascorbic acid ferrous stability, 37wt.% concentrated hydrochloric acids are lost, obtains acid thickening agent solution, counter ion
Salt potassium chloride is soluble in water, then two kinds of solution are mixed, and stirs evenly, you can obtain viscoplasticity acidic group fracturing fluid system, data
Such as table 4.
4 lauroylamidopropyl betaine acid-base fracturing fluid viscosity of table varies with temperature
| Temperature/DEG C | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
| Viscosity/mPas | 150 | 140 | 130 | 120 | 100 | 60 | 20 |
Viscoplasticity acid-base fracturing fluid complete to run into after the effect of acid fracturing in the earth formation touch crude oil, water flooding or
Person's natural gas needs that gelatinization water can be broken, and otherwise visco-elastic material can have a negative impact to the acid stimulation effect on stratum.Viscoplasticity
One big feature of acid-base fracturing fluid is that the broken glue of residual acid is simply thorough, and without additional gel breaker, residual acid, which meets hydrocarbon, can break glue.
Gel breaking test 3,
Coal separation oil cooks gel breaker in experiment, and when experiment is mixed acid-base fracturing fluid with kerosene by different proportion, at 60 DEG C and
Taking out residual acid fracturing fluid measure viscosity at 100 DEG C after stirring 60min, (apparent viscosity ＜ 5mPas are as thorough under experimental temperature
Broken glue).Data such as table 5.
Gel breaking test 4,
Add substantial amounts of water in experiment, survey its viscosity (apparent viscosity ＜ 5mPas are thoroughly to break glue under experimental temperature).Number
According to such as table 6.
5 viscoplasticity acid-base fracturing fluid of table adds in not viscosity of the same amount kerosene after 60min at different temperatures
| Kerosene content/wt.% | 5 | 6 | 8 | 10 | 12 |
| 60 DEG C of viscosity/mPas | 4 | 3 | 2 | 1 | 1 |
| 100 DEG C of viscosity/mPas | 1 | 0 | 0 | 0 | 0 |
6 viscoplasticity acid-base fracturing fluid of table adds in the viscosity after not same amount water at different temperatures
| Water/wt.% | 100 | 200 | 300 | 400 | 500 |
| 60 DEG C of viscosity/mPas | 50 | 25 | 5 | 1 | 0 |
| 100 DEG C of viscosity/mPas | 25 | 10 | 0 | 0 | 0 |
The acid-base fracturing fluid of thickening agent lauroylamidopropyl betaine preparation is can be seen that with temperature liter from table 4 and Fig. 2
High viscosity declines, and viscosity can meet pressure break and take viscosity required by sand up to 100mPas at 100 DEG C.
As can be seen from Table 5, in 60 DEG C of low temperature, kerosene content 5wt.% can meet brokenly glue requirement, dodecanamide propyl
Glycine betaine acid-base fracturing fluid can thoroughly break glue in 60 DEG C~100 DEG C.
As can be seen from Table 6, lauroylamidopropyl betaine acid-base fracturing fluid can thoroughly break glue when adding in 3 times of water.
Embodiment 3：
A kind of acid-base fracturing fluid is present embodiments provided, by percentage to the quality：
Thickening agent：INCROQUAT TMC-80 4wt.%
31wt.% concentrated hydrochloric acids：75.0wt.%
Counter ion salt：Sodium benzoate 2.5wt.%
Corrosion inhibiter：Bromination -1,4 (a- octylpyridiniums) butane 2.5wt.%
Ferrous stability：Ironic citrate ion stabilizer 5.0wt.%
Surplus is water.
Specifically preparation process is：
According to aforementioned proportion, INCROQUAT TMC-80 is added to the water abundant dissolving under room temperature, successively plus
Enter corrosion inhibiter bromination-Isosorbide-5-Nitrae (a- octylpyridiniums) butane, ironic citrate ion stabilizer, 31wt.% concentrated hydrochloric acids, obtain acid thick
Agent solution, counter ion salt sodium benzoate is soluble in water, then two kinds of solution are mixed, and stirs evenly, you can obtain viscoelastic acid
Base fracturing fluid system, data such as table 7.
7 INCROQUAT TMC-80 acid-base fracturing fluid viscosity of table varies with temperature
| Temperature/DEG C | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
| Viscosity/mPas | 180 | 165 | 150 | 138 | 124 | 100 | 60 |
Viscoplasticity acid-base fracturing fluid complete to run into after the effect of acid fracturing in the earth formation touch crude oil, water flooding or
Person's natural gas needs that gelatinization water can be broken, and otherwise visco-elastic material can have a negative impact to the acid stimulation effect on stratum.Viscoplasticity
One big feature of acid-base fracturing fluid is that the broken glue of residual acid is simply thorough, and without additional gel breaker, residual acid, which meets hydrocarbon, can break glue.
Gel breaking test 5,
Coal separation oil cooks gel breaker in experiment, so coal separation oil cooks gel breaker in experiment, by acid-base fracturing fluid and coal during experiment
Oil is mixed by different proportion, and residual acid fracturing fluid measure viscosity is taken out (under experimental temperature after 60min is stirred at 60 DEG C and 110 DEG C
Apparent viscosity ＜ 5mPas are thoroughly to break glue).Data such as table 8.
Gel breaking test 6,
Add substantial amounts of water in experiment, survey its viscosity (apparent viscosity ＜ 5mPas are thoroughly to break glue under experimental temperature).Number
According to such as table 9.
8 viscoplasticity acid-base fracturing fluid of table adds in not viscosity of the same amount kerosene after 60min at different temperatures
| Kerosene content/wt.% | 5 | 6 | 8 | 10 | 12 |
| 60 DEG C of viscosity/mPas | 4 | 3 | 2 | 1 | 1 |
| 110 DEG C of viscosity/mPas | 0 | 0 | 0 | 0 | 0 |
9 viscoplasticity acid-base fracturing fluid of table adds in the viscosity after not same amount water at different temperatures
| Water/wt.% | 100 | 200 | 300 | 400 | 500 |
| 60 DEG C of viscosity/mPas | 60 | 40 | 5 | 1 | 0 |
| 110 DEG C of viscosity/mPas | 25 | 9 | 0 | 0 | 0 |
The acid-base fracturing fluid of thickening agent INCROQUAT TMC-80 preparation is can be seen that with temperature from table 7 and Fig. 3
Degree rise viscosity declines, and viscosity can meet pressure break and take viscosity required by sand up to 100mPas at 110 DEG C.
As can be seen from Table 8, in 60 DEG C of low temperature, kerosene content 5wt.% can meet brokenly glue requirement, docosyl three
Ammonio methacrylate acid-base fracturing fluid can thoroughly break glue in 60 DEG C~110 DEG C.
As can be seen from Table 9, INCROQUAT TMC-80 acid-base fracturing fluid can thoroughly be broken when adding in 3 times of water
Glue.
Embodiment 4：
The preparation method of the present embodiment comparative example 1 prepares acid-base fracturing fluid, by percentage to the quality：
Thickening agent：Dioctadecyl dimethyl ammonium chloride 7.5wt.%
31wt.% concentrated hydrochloric acids：50.0wt.%
Counter ion salt：Lauryl sodium sulfate 0.5wt.%
Corrosion inhibiter：Bis-imdazoline 0.5wt.%
Ferrous stability：Disodium edta ferrous stability 1.5wt.%
Surplus is water.
Specifically preparation process is：
According to aforementioned proportion, 31wt.% concentrated hydrochloric acids are added to the water under room temperature, sequentially add corrosion inhibiter bicyclic imidazo
Quinoline, disodium edta class ferrous stability, dioctadecyl dimethyl ammonium chloride, fully dissolving obtain acid thickening
Agent solution, counter ion salt lauryl sodium sulfate is soluble in water, then two kinds of solution are mixed, and stirs evenly, you can obtain viscoelastic
Property acid-base fracturing fluid system, data such as table 10.
The viscosity of 10 dioctadecyl dimethyl ammonium chloride acid-base fracturing fluid difference preparation process of table varies with temperature
| Temperature/DEG C | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
| Viscosity/mPas | 10 | 5 | 2 | 2 | 1 | 1 | 0 |
Thickening agent dioctadecyl dimethyl ammonium chloride is can be seen that from table 1 and 10 data of table in acid after first dissolving, no
Viscoplasticity acid-base fracturing fluid is generated, and first dissolving can generate viscoplasticity acid-base fracturing fluid in water, therefore thickening agent is needed in water
In fully dissolve.
Claims (10)
1. a kind of viscoplasticity acidic group fracturing fluid compositions, said composition include：
Thickening agent：2.0-7.5 parts by weight；
31wt.%-37wt.% concentrated hydrochloric acids：50.0-75.0 parts by weight；
Counter ion salt：0.5-2.5 parts by weight；
Corrosion inhibiter：0.5-2.5 parts by weight；
Ferrous stability：1.5-5.0 parts by weight.
2. composition according to claim 1, including suitable water so that the sum of each component is 100 parts by weight.
3. composition according to claim 1, is counted using its total weight as 100%, component is：
Thickening agent：2.0wt.%-7.5wt.%；
31wt.%-37wt.% concentrated hydrochloric acids：50.0wt.%-75.0wt.%；
Counter ion salt：0.5wt.%-2.5wt.%；
Corrosion inhibiter：0.5wt.%-2.5wt.%；
Ferrous stability：1.5wt.%-5.0wt.%；
Water：Surplus.
4. composition according to claim 1, wherein, the thickening agent includes hexadecyltrimethylammonium chloride, 20
Dialkyl group trimethyl ammonium chloride, Varisoft 432PPG, dioctadecyl dimethyl ammonium chloride, dodecanamide propyl
One or more in glycine betaine.
5. composition according to claim 1, wherein, the counter ion salt include lauryl sodium sulfate, sodium salicylate,
One or more in sodium benzoate, potassium chloride.
6. composition according to claim 1, wherein, the corrosion inhibiter include chlorination -1,6- (a- octylpyridiniums) hexane,
- 2 hydroxy propane of 1,3- dichlorides pyridine, bromination -1,4 (a- octylpyridiniums) butane, oily acid based imidazolines, bis-imdazoline, benzene
And the one or more in imidazoles.
7. composition according to claim 1, wherein, the ferrous stability include ironic citrate ion stabilizer,
One or more in disodium edta ferrous stability, arabo-ascorbic acid ferrous stability.
8. composition according to claim 1, wherein,
The thickening agent includes INCROQUAT TMC-80, dioctadecyl dimethyl ammonium chloride；
The counter ion salt includes lauryl sodium sulfate, sodium benzoate；
The corrosion inhibiter includes bromination -1,4 (a- octylpyridiniums) butane, bis-imdazoline；
The ferrous stability includes ironic citrate ion stabilizer, disodium edta ferrous stability.
9. a kind of viscoplasticity acid-base fracturing fluid is by any one of the claim 1~8 viscoplasticity acidic group fracturing fluid compositions
Prepare what is obtained.
10. the preparation method of viscoplasticity acid-base fracturing fluid described in claim 9, the method comprising the steps of：
A, thickening agent is soluble in water, adds corrosion inhibiter, ferrous stability, then adds in concentrated hydrochloric acid, obtains acid thickening agent
Liquid；
B, counter ion salt is dissolved in water, obtains counter ion solution；
C, by above-mentioned acid thickening agent liquid and the miscible conjunction of counter ion, stir evenly, you can obtain viscoplasticity acidic group fracturing liquid
System.
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