CN1752173A - Composition of clean fracturing fluid additive and method for fracturing stratum - Google Patents
Composition of clean fracturing fluid additive and method for fracturing stratum Download PDFInfo
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- CN1752173A CN1752173A CN 200410078253 CN200410078253A CN1752173A CN 1752173 A CN1752173 A CN 1752173A CN 200410078253 CN200410078253 CN 200410078253 CN 200410078253 A CN200410078253 A CN 200410078253A CN 1752173 A CN1752173 A CN 1752173A
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- stratum
- fracturing fluid
- fracturing
- clean
- clean fracturing
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- 239000012530 fluid Substances 0.000 title claims abstract description 112
- 239000000654 additive Substances 0.000 title claims abstract description 59
- 230000000996 additive effect Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000000203 mixture Substances 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- -1 carbon chain alkyl quaternary ammonium salt Chemical class 0.000 claims abstract description 41
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 229960001860 salicylate Drugs 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims abstract description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 42
- 235000019198 oils Nutrition 0.000 claims description 40
- 239000003795 chemical substances by application Substances 0.000 claims description 39
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 27
- 239000003292 glue Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 20
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 16
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 12
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 11
- 235000019270 ammonium chloride Nutrition 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 claims description 9
- 239000003760 tallow Substances 0.000 claims description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 125000005211 alkyl trimethyl ammonium group Chemical group 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 5
- 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 description 5
- CUBCNYWQJHBXIY-UHFFFAOYSA-N benzoic acid;2-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=CC=C1.OC(=O)C1=CC=CC=C1O CUBCNYWQJHBXIY-UHFFFAOYSA-N 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 5
- 229960004025 sodium salicylate Drugs 0.000 claims description 5
- 239000003549 soybean oil Substances 0.000 claims description 5
- 235000012424 soybean oil Nutrition 0.000 claims description 5
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 235000019439 ethyl acetate Nutrition 0.000 claims description 3
- 239000008173 hydrogenated soybean oil Substances 0.000 claims description 3
- 238000005984 hydrogenation reaction Methods 0.000 claims description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 2
- BDLXTDLGTWNUFM-UHFFFAOYSA-N 2-[(2-methylpropan-2-yl)oxy]ethanol Chemical compound CC(C)(C)OCCO BDLXTDLGTWNUFM-UHFFFAOYSA-N 0.000 claims description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 2
- QCDWFXQBSFUVSP-UHFFFAOYSA-N 2-phenoxyethanol Chemical compound OCCOC1=CC=CC=C1 QCDWFXQBSFUVSP-UHFFFAOYSA-N 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- 101100493820 Caenorhabditis elegans best-1 gene Proteins 0.000 claims description 2
- 101100494262 Caenorhabditis elegans best-12 gene Proteins 0.000 claims description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 2
- BOFZOTMTKBQRAB-UHFFFAOYSA-N azanium;2-carboxyphenolate Chemical compound N.OC(=O)C1=CC=CC=C1O BOFZOTMTKBQRAB-UHFFFAOYSA-N 0.000 claims description 2
- DVBJBNKEBPCGSY-UHFFFAOYSA-M cetylpyridinium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 DVBJBNKEBPCGSY-UHFFFAOYSA-M 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
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims description 2
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims description 2
- FRMWBRPWYBNAFB-UHFFFAOYSA-M potassium salicylate Chemical compound [K+].OC1=CC=CC=C1C([O-])=O FRMWBRPWYBNAFB-UHFFFAOYSA-M 0.000 claims description 2
- 229960003629 potassium salicylate Drugs 0.000 claims description 2
- UEVAMYPIMMOEFW-UHFFFAOYSA-N trolamine salicylate Chemical class OCCN(CCO)CCO.OC(=O)C1=CC=CC=C1O UEVAMYPIMMOEFW-UHFFFAOYSA-N 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims 4
- 235000013311 vegetables Nutrition 0.000 claims 4
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims 2
- 150000002892 organic cations Chemical class 0.000 claims 2
- YMKDRGPMQRFJGP-UHFFFAOYSA-M cetylpyridinium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 YMKDRGPMQRFJGP-UHFFFAOYSA-M 0.000 claims 1
- 239000004094 surface-active agent Substances 0.000 abstract description 17
- 239000004576 sand Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004132 cross linking Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- ONLRKTIYOMZEJM-UHFFFAOYSA-N n-methylmethanamine oxide Chemical compound C[NH+](C)[O-] ONLRKTIYOMZEJM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 39
- 150000004676 glycans Chemical class 0.000 description 22
- 239000007864 aqueous solution Substances 0.000 description 11
- 239000012065 filter cake Substances 0.000 description 10
- 238000010008 shearing Methods 0.000 description 10
- 239000013543 active substance Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 230000006378 damage Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 7
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 208000014674 injury Diseases 0.000 description 6
- ROSDSFDQCJNGOL-UHFFFAOYSA-N protonated dimethyl amine Natural products CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000693 micelle Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241001449342 Chlorocrambe hastata Species 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 229920000289 Polyquaternium Polymers 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- 235000019484 Rapeseed oil Nutrition 0.000 description 2
- 150000001242 acetic acid derivatives Chemical class 0.000 description 2
- VFFDVELHRCMPLY-UHFFFAOYSA-N dimethyldodecyl amine Natural products CC(C)CCCCCCCCCCCN VFFDVELHRCMPLY-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- YWFWDNVOPHGWMX-UHFFFAOYSA-N n,n-dimethyldodecan-1-amine Chemical compound CCCCCCCCCCCCN(C)C YWFWDNVOPHGWMX-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 235000003276 Apios tuberosa Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000010744 Arachis villosulicarpa Nutrition 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 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
- 229920002752 Konjac Polymers 0.000 description 1
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 244000275012 Sesbania cannabina Species 0.000 description 1
- 244000250129 Trigonella foenum graecum Species 0.000 description 1
- 235000001484 Trigonella foenum graecum Nutrition 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- ZOJBYZNEUISWFT-UHFFFAOYSA-N allyl isothiocyanate Chemical compound C=CCN=C=S ZOJBYZNEUISWFT-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 235000010485 konjac Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000008164 mustard oil Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000000913 palmityl 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])[H] 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 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
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 235000001019 trigonella foenum-graecum Nutrition 0.000 description 1
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 1
- SZYJELPVAFJOGJ-UHFFFAOYSA-N trimethylamine hydrochloride Chemical class Cl.CN(C)C SZYJELPVAFJOGJ-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A composition of clean fracturing fluid additive and a method for fracturing a stratum, the clean fracturing fluid additive is characterized by comprising the following components: long carbon chain alkyl quaternary ammonium salt, long carbon chain alkyl dimethyl amine oxide, salicylate, glycol ether, low carbon alcohol and water; the method comprises the steps of preparing the clean fracturing fluid; under the pressure enough to press the stratum open, the clean fracturing fluid is squeezed into the stratum through perforation holes of an oil-gas well, and cracks are formed inside the stratum; squeezing into sand carrying liquid; pressure is removed, cracks are closed, the broken fracturing fluid is discharged back to the ground, all advantages of the conventional surfactant-based fracturing fluid are kept by the fracturing fluid, fluid preparation equipment can be reduced and operation requirements can be lowered by using the clean fracturing fluid additive, online tackifying and online crosslinking of the fracturing fluid can be really realized, the number of types of additives required for preparing the fracturing fluid is sharply reduced to two types or even one type, and the clean fracturing fluid can be used under an extremely severe cold condition without additional heating equipment.
Description
Technical field
The present invention relates to fracturing liquid and fracturing process that oil-gas field uses, specifically, is a kind of composition of clean fracturing solution additive and the method on pressure break stratum.
Background technology
In the particularly hypotonic hydrocarbon zone exploratory development of hydrocarbon zone process, hydraulic fracturing technology is the measure of using usually.Form the crack lead to the shaft bottom by waterfrac treatment in hydrocarbon zone, output that can more efficient raising oil gas.
Normally a kind of heavy-gravity of fracturing liquid or gelatinous fluid.High-pressure pump group by ground is annotated the liquid of certain viscosity to the oil gas well pump, and its speed is enough to form the crack in formation rock, pump into subsequently to contain the high strength particle gel of (being called propping agent).Propping agent is along with fracturing liquid enters the crack of formation, and when surface pump notes pressure removed, fracturing liquid infiltrated the stratum or discharges the stratum, and propping agent is stayed in the crack with certain distribution mode, makes the stratum have the passage of high flow conductivity, increases the oil gas well yield.
In the waterfrac treatment process, a common problem is exactly that fracturing fluid leak is in formation pore matrix.Fracturing fluid leak is serious problems, effectively is distributed in the crack in order to make propping agent, must pump into the not low fracturing liquid of a large amount of expenses.In addition, the liquid of leak-off also can reduce the effect of waterfrac treatment.For example, the leak-off of liquid can limit fissured geometrical shape and size.
Fracturing liquid contains water miscible polymkeric substance usually, gives the aqueous solution certain viscosity, also can make fracturing liquid have enough visco-elasticity by chemically crosslinked.Before using, in the mixing tank on ground, make these water miscible polymer dispersed, swelling by certain whipping device, form the solution of certain viscosity.Before arriving the shaft bottom,, form the viscoelastic fluid that is enough to carry propping agent by crosslinked.Generally use glycan class material as of the fracturing fluid viscosifying agent, as melon glue, sesbania gum, fenugreek gum, konjak gum etc.
Using glycan class material is that its hydrolysis is time-consuming as a problem of fracturing fluid gelatinizer, and needs a large amount of equipment.The increase that these equipment and relevant personnel are serious of the fracturing fluid cost.Secondly, in case these glycan class viscosifying agents dissolvings and crosslinked after, just be difficult in solution, add again other viscosifying agent, be difficult in the concentration of adjustment viscosifying agent in the frac job process.
Glycan class material is exactly to need a large amount of complementary additives as the another one problem of fracturing fluid gelatinizer.For example, sterilant, defrother, dispersion agent, pH control agent, chemical gel breaker, enzyme breaker, Fe stabilizer, fluid stable agent, linking agent, delay cross linking additive, antioxidant and salt.The use of these additives must form certain prescription.After fracturing liquid prepares, be transported to the well site, also need the accurate measurement of linking agent during infusion.
Secondly, when glycan class material uses as fracturing fluid gelatinizer, in the frac job process, these additives in the fracturing liquid can concentrate on the wall of crack because of the leak-off of water, form be difficult to degrade fracture flow capacity is had the spissated glycan gellike of height of grievous injury.After there are some researches show pressure break, the glycan class material above 60% is trapped in the stratum.
Some other glycan as Natvosol (HEC), also is used as the viscosifying agent of aqueous fracturing fluid, and the solution that mixes forms filter cake hardly at the crack wall, but HEC easily forms agglomerate or flake in mixing process.
In order to overcome the restriction of glycan class viscosifying agent, some advise using relatively costly thickening material, as viscoelastic surfactant.Viscoelastic surfactant can form the good frozen glue of visco-elasticity that is similar to glycan class viscosifying agent in the aqueous solution.This frozen glue enough is transported to the crack wall to propping agent, but does not have above-mentioned three kinds of restrictions of glycan class viscosifying agent.In addition, viscoelastic surfactant forms the micella that can enter the stratum, and just can break glue returns row not need gel breaker then.
The use history of viscoelastic surfactant gelled fracturing fluid is not long, and the experience that accumulates in the fracturing process is also very limited.A typical problem that runs in the past is exactly exaggerative viscoelastic surfactant based of the fracturing fluid leak-off.In addition, viscoelastic surfactant source narrow, cost an arm and a leg, use temperature is low all is that problem to be solved is arranged.
However, of the fracturing fluid research of viscoelastic surfactant and use are constantly being carried out especially in recent years.Be limited in many cases and contain clay or need water-soluble salt to suppress the stratum of clay aquation.At United States Patent (USP) 5,551, in 516, Norman discloses viscoelastic surfactant based of the fracturing fluid composition.In this fracturing liquid, with the organic salt of the water miscible inorganic salt of also having of using of tensio-active agent such as Repone K or ammonium chloride and similar water poplar acid sodium or alcohol as stablizer.Employed tensio-active agent main component is 60% mustard oil base dihydroxy ethyl ammonio methacrylate at least.But it is said the fracturing liquid heatproof to 107 ℃ of prescription.
United States Patent (USP) 5,964,295,6,435,277,6,412,561 disclose viscoelastic surfactant based of the fracturing fluid component type of use and using method.In this invention, do not indicate the title of the tensio-active agent of determining use, but pointed out the advantage of viscoelastic surfactant in the low-permeability oilfield volume increase.These inventions provide a kind of method of new increase hypotonic (rate of permeation is less than 20md) pressure break formation oil output.Owing to used viscoelastic surfactant based fracturing liquid, limited the output of stratum associated water, reduced the fracturing fluid leak amount, reduced the of the fracturing fluid equipment of preparation and pumping.The visco-elasticity of the tensio-active agent in the water layer of stratum helps that fracturing liquid more enters oil reservoir and the output of oil in the oil reservoir of stratum after changing fissured geometrical shape and increasing pressure break.
The condition of the tensio-active agent in the United States Patent (USP) 5,979, the 555 pairs of viscoelastic surfactant based fracturing liquids has been done requirement.This invention thinks, the alkyl carbon number 18 and below the content of content in whole tensio-active agent quaternary ammonium salt of alkyl quaternary ammonium salts should be less than 3%, other impurity should be less than 1%.Satisfactory tensio-active agent and Repone K or ammonium chloride, organic stabilizer use together.
In recent years, the Schlumberger petroleum engineering technical service company of the U.S. carried out the of the fracturing fluid technical service of visco-elasticity surfactivity base at the Xinjiang Oilfield of China, long celebrating oil field, Daqing oil field, and its of the fracturing fluid trade(brand)name is ClearFRAC
This fracturing liquid is because very little and do not form filter cake and residue is called as clean fracturing fluid (also claiming pollution-free fracturing liquid, non-injury fracturing fluid, no polymkeric substance fracturing liquid) in China in fracturing process to formation damage.This fracturing liquid is made up of 4 kinds of additives: J508W, L64, J463 and Repone K.Wherein, J508W is the alcohol mixture solution that contains 60% docosyl dihydroxy ethyl ammonio methacrylate, and J463 is a sodium salicylate, and L64 is the polyquaternium of small molecular weight.
Xinjiang Petroleum Administration has also used surfactant based fracturing liquid.To grow alkyl chain length trimethyl ammonium chloride and sodium salicylate is the main component preparing fracturing fluid.
People such as the Wang Xin of down-hole branch office of Daqing Oil Field Co., Ltd alcohol, Wang Shigui have also developed surfactant based fracturing liquid, and this fracturing liquid is called as non-injury fracturing fluid, has also applied for Chinese patent (publication number is CN1439691A).The aqueous solution of bromination quaternary ammonium salt (host) and sodium salicylate (linking agent) has just formed non-injury fracturing fluid.Employed quaternary ammonium salt is a cetyl trimethylammonium bromide.
As seen from the above, no matter be domestic or external, employed surfactant based fracturing liquid is made up of three kinds of additives at least.First kind is water miscible salt, as Repone K, ammonium chloride; Second kind of additive of forming by long alkyl chain length quaternary ammonium salt; The third is salicylic acid sodium salt or sylvite.
Summary of the invention
The purpose of this invention is to provide a kind of clean fracturing solution additive, this additive is even, transparent, low-freezing and pourable liquid.Although itself have very poor visco-elasticity, can give its aqueous solution enough as of the fracturing fluid visco-elasticity.The present invention also provides the method for a kind of use by the pressure break stratum of this additive preparing fracturing fluid simultaneously.
The feature of clean fracturing solution additive is made up of following component
1. long alkyl chain length quaternary ammonium salt.
2. long alkyl chain length dimethyl oxidation amine.
3. salicylate.
4. glycol ether.
5. low-carbon alcohol.
6. water.
United States Patent (USP) 5,979,555 require the alkyl carbon number 18 and below the content of content in whole tensio-active agent quaternary ammonium salt of alkyl quaternary ammonium salts should be less than 3%, other impurity should be less than 1%.The present invention does not have such requirement, and the carbon chain lengths of long alkyl chain length quaternary ammonium salt can be 18 carbon or 16 carbon, but can not be less than 16 carbon.Carbon chain lengths also can use in the present invention at the alkyl quaternary ammonium salts of 18 carbon atoms.
Long alkyl chain length quaternary ammonium salt among the present invention is a kind of or the mixture of several long alkyl chain length quaternary ammonium salts at least, and wherein the long alkyl chain length quaternary ammonium salt with iodine number 45～65 is optimal selection.Candidate's long alkyl chain length quaternary ammonium salt has the muriate or the bromide of long alkyl chain length trimethylammonium, the muriate or the bromide of long alkyl chain length pyridine, long alkyl chain length dihydroxy ethyl Methochloride or bromide, with muriate for well.
Alkyl in the long alkyl chain length quaternary ammonium salt can be from the petrochemical complex product, as hexadecyl, octadecyl or from natural product, as tallow base, hydrogenated-tallow group, oleic acid base, soybean oil alkyl, hydrogenated soybean oil alkyl, rape seed oil alkyl, hydrogenation rape seed oil alkyl, peanut oil alkyl, hydrogenated groundnut alkyl.
The alkyl dimethyl amine oxide of long carbochain is 12～CH3-(CH2)13N(CH3)2-O or coconut oil base dimethyl oxygen amine.
Salicylate must be that solubleness surpasses 20% inorganic salt or organic salt in water, and the salicylate of using as the present invention can be a kind of mixture of or several salt.These salicylates comprise sodium salicylate, potassium salicylate, Salicylate ammonium, Trolamine salicylate salt, Whitfield's ointment diethanolamine salt, Whitfield's ointment Monoethanolamine MEA BASF salt, Whitfield's ointment Monomethylamine salt, Whitfield's ointment dimethylamine salt, Whitfield's ointment front three amine salt.
Glycol ether is a kind of or several mixtures in the following material at least: ethylene glycol ethyl ether, butyl glycol ether, ethylene glycol phenyl ether, ethylene glycol ether acetate, Diethylene Glycol butyl ether, ethylene glycol tertbutyl ether, diethylene glycol monobutyl ether acetic ester.
Low-carbon alcohol is a kind of or several mixtures in the following material at least: methyl alcohol, ethanol, Virahol, ethylene glycol, propylene glycol, glycerol.
Long alkyl chain length quaternary ammonium salt general 30%～70%, best 45～60%; Alkyl dimethyl amine oxide general 0.5%～10%, best 1%～5%; Salicylate general 8%～20%, best 12%～18%; Glycol ether general 2%～10%, best 4%～6%; Low-carbon alcohol general 5%～25%, best 10%～20%; Surplus is a water.
Speed to stratum squeeze note liquid is 1 meter
3/ minute ~ 10 meters
3/ minute, generally at 2.5 meters
3/ minute ~ 6 meters
3/ minute; Employed wellhead pressure is generally at 10MPa ~ 150MPa.The temperature on described stratum is 20 ℃ ~ 100 ℃.
In order to adapt to the smooth construction of clean fracturing fluid under the severe cold weather, can adjust the concentration of the low-carbon alcohol in the clean fracturing solution additive, when being 20% as the concentration when low-carbon alcohol, the clean fracturing solution additive still has good flowability under subzero 30 ℃.
The use of clean fracturing solution additive of the present invention is very simple, and only needing the clean fracturing solution additive of metering and water under agitation mixed to become fracturing liquid.Letter is put in required also few being difficult to of dosing equipment, only need recycle pump and tank car, and the concentration of each jar can change.Can in the base fluid for preparing, add extra clean fracturing solution additive at well head,, make base fluid become well behaved sand-carrying agent by fluidic high speed shear effect in the tubing string.The advantage of these uses of clean fracturing solution additive is that glycan class fracturing liquid can not have.
The invention provides a kind of clean fracturing solution additive and a kind of clean fracturing fluid and using method of forming by clean fracturing solution additive of the present invention thereof.This fracturing liquid has kept surfactant based in the past of the fracturing fluid all advantages, use this clean fracturing solution additive can reduce dosing equipment and reduction operational requirement, can make the real online tackify, online crosslinked of realizing of fracturing liquid, the species number that makes preparing fracturing fluid need prepare additive falls sharply to two kinds even a kind of.In addition, clean fracturing fluid provided by the invention also can need not extra heating installation and just can use under extreme severe cold condition.
Clean fracturing fluid of the present invention is exactly the aqueous solution of clean fracturing solution additive of the present invention.Clean fracturing fluid not only materials is simple and easy to use, and also has outstanding performance.This shows following several aspect
1. Du Te one-tenth glue mechanism.The molecular weight of each component is all less than 500, less than 0.1% of glycan class viscosifying agent molecular weight in the clean fracturing solution additive.In the aqueous solution, these small molecules associate into micella with water under certain condition.The micellar type is relevant with the concentration of clean fracturing solution additive in the aqueous solution.During lower concentration, micella is spherical in shape.During greater concn, it is bar-shaped that micella is.This moment is if continue to increase the concentration of clean fracturing solution additive, and the length of rod-shaped micelle then can elongated (reaching 100nm), becomes vermiculate glues.Micella that forms even mutual the winding show some viscoelasticity characteristics of the similar high density superpolymer aqueous solution.
2. particular rheological properties energy.The shearing behavior of clean fracturing fluid of the present invention with glycan class of the fracturing fluid different as viscosifying agent.Although clean fracturing fluid has the performance of shear thinning, its viscosity is reversible.After external force removed, the visco-elasticity of system can be recovered fully.In addition, under certain shearing condition, almost it doesn't matter for fracturing liquid viscosity and shear time.And after the shearing of glycan class fracturing liquid process, the viscosity of forfeiture is then irrecoverable.
3. Du Te filtration property.In the waterfrac treatment process, the leak-off behavior of clean fracturing fluid is of the fracturing fluid different with the glycan class.Glycan class fracturing liquid can produce residue at the crack wall when leak-off, form filter cake.It is very nearly the same that the viscosity of the viscosity of stratum matrix filtrate and water is gone in filter.And in clean fracturing fluid because component all is a small molecules, when the wall leak-off of crack, do not have filter cake to form, fracturing liquid enters stratum matrix with full viscosity.
4. Du Te broken colloidality energy.After waterfrac treatment adds sand and finishes, will consider brokenly the glue problem.The of the fracturing fluid broken glue of glycan class relies on persulphate or enzyme breaker.The broken glue process of clean fracturing fluid does not then need these gel breakers.Clean fracturing fluid relies on its change that has environment to finish its broken glue process.The visco-elasticity of clean fracturing fluid is from a large amount of vermiculate glues that exist wherein, and these vermiculate glues run into just englobement micella immediately of hydrocarbons (in-place oil), and the viscosity of globular micelle and blends of crudes is extremely low.Formation crude oil always exists.
5. clean fracturing fluid is to almost not injury of hydraulic fracture.Because leak-off, glycan class fracturing liquid can be condensed into the extremely strong gelatinoid of elasticity in the crack, promptly so-called filter cake.The existence of filter cake not only makes a large amount of polymkeric substance be trapped in the crack forever, and has greatly reduced the fracture flow capacity that had formed already.And clean fracturing fluid is not owing to forming filter cake, so fracture flow capacity is not almost had injury in the crack.
6. the favourable row's of returning performance.There are some researches show, even the of the fracturing fluid row of returning of glycan class volume reaches 100%, in addition bigger, be trapped in the amount of the glycan base polymer in the crack at least greater than 50% owing to forming filter cake.Because clean fracturing fluid does not form filter cake, so clean fracturing fluid can not be trapped in the crack.Filter is gone into the of the fracturing fluid row of returning in the stratum and is then looked it and have environment and change.Filter is gone in the matrix of oil reservoir or oil-water common-layer, and clean fracturing fluid becomes the low globular micelle of viscosity pole owing to contacting with crude oil, along with the operation of well after the pressure break can be discharged ground along with crude oil all return.And the fracturing liquid in the water layer is gone in filter, owing to have no chance to contact crude oil, its viscosity still can temporarily be kept.But along with local water constantly dilutes the fracturing liquid that enters in the matrix, of the fracturing fluid mobility can be improved, and final returning fully along with the extraction of local water discharged ground.
7. the good grittiness energy of taking.When using glycan class fracturing liquid to carry out waterfrac treatment, obtain the conveying experience of a propping agent: at shearing rate is 100S
-1The time, of the fracturing fluid viscosity reaches 100mPaS at least, or is 170S at shearing rate
-1The time, viscosity reaches 50mPaS at least.This experience is to clean fracturing fluid and inapplicable.
The rheological behaviour of clean fracturing fluid can not explain that its characteristic is more as Newtonian fuid with the theory of power-law fluid.It doesn't matter with shear time under different shearings rate for its apparent viscosity, although have shear thinning behavior, and its rheological completely reversibility.When being in shear conditions following time, its viscosity can forever not degraded; Under low shearing condition, high viscosity is arranged again.Therefore, the clean fracturing fluid conveying and the suspension that can be propping agent provides competent viscosity.
Laboratory observation and on-site experience show that the clean fracturing fluid that viscosity is lower than traditional principles is enough to and can puts propping agent by design, at 100S
-1Shearing condition under, the viscosity of clean fracturing fluid is low to be reached 30mPaS and just can effectively carry propping agent.
Because these above-mentioned characteristics, clean fracturing fluid becomes ideal aqueous fracturing fluid in the low permeability formation waterfrac treatment operation.Ben is that low permeability reservoir is also inequality with the method that height oozes reservoir control leak-off.For example, filtering agent falls in solid, and to ooze reservoir at height effective especially, but in hypotonic oil-containing reservoir nearly unavailable.Because in fracturing process, fracturing liquid is the stratum that enters of full viscosity, the method for restriction leak-off is by viscosity rather than filter cake, thus greatly reduce the filter loss of liquid, thus improved the utilising efficiency of liquid.Except the net pay zone waterfrac treatment being used the clean fracturing fluid, when adjacent bed and oil, water are with the pressure break on the stratum of layer each other to oil, water, use clean fracturing fluid also can receive beyond thought effect.
When waterfrac treatment is carried out on the stratum of adjacent bed each other to oil, water, can a certain amount of clean fracturing fluid of first squeeze note.Its viscosity can keep relative stablizing after clean fracturing fluid entered water layer matrix, and the fracturing liquid that enters oil reservoir matrix is because of the broken glue loses viscosity of the existence of oil.Therefore, be to make in the of the fracturing fluid high speed squeeze note process of seam in follow-up purpose, increase the resistance that fracturing liquid enters water layer, so just can change fissured trend and geometrical shape in the fracturing process, improved the possibility of of the fracturing fluid utilising efficiency and effective fracture.After pressure break was gone into operation, water layer was owing to become the seam probability little and be present in the full-bodied fracturing liquid of the loss of performance that also is not able to do in time wherein, made that the mobility of water reduces greatly in the water layer, seriously limited the output of water.Oil reservoir is made seam and the of the fracturing fluid glue that in time breaks of leak-off greatly is improved output because of high efficiency.
To also having special effect of increasing production after the waterfrac treatment of moisture oil reservoir employing clean fracturing fluid.Such stratum often oil-water-layer is thinner, and oil sheet and thin water layer replace mutually, and the mechanical property on stratum is more approaching, shows as the profit symbiosis on the macroscopic view.Although adopt the clean fracturing fluid waterfrac treatment not reach the purpose of optimizing fracture geometry, be very favorable to post-fracturing operation to this class stratum.In fracturing process, directly squeeze note is made seam fracturing liquid and sand-carrying agent.Owing to the of the fracturing fluid viscosity in the thin water layer is maintained, the of the fracturing fluid viscosity in the oil sheet becomes oil viscosity because of hydro carbons exists, and it is obvious to show as the effect that increases oil and gas production after pressure break is gone into operation, and the ability of increase aquatic products amount is low.
The method of use clean fracturing fluid of the present invention is a kind of novel fracturing technique, and it is to low permeability formation, especially rate of permeation is had obvious effects less than the waterfrac treatment effect on the stratum of 30mPaS.Not only the materials kind is few for it, and the of the fracturing fluid demand equipment of preparing fracturing fluid and infusion is few, and because low leak-off can obviously improve of the fracturing fluid utilising efficiency.Can also derive a series of thus such as above-mentioned optimization fracture geometry and the only obvious waterfrac treatment new technology that improves oil and gas production.
In addition, clean fracturing fluid of the present invention can also use together with energizer, becomes foamed fracturing fluid.Energizer comprises air, nitrogen, carbonic acid gas.
Because the needs of good ground, clean fracturing fluid of the present invention also can comprise a spot of water miscible salt, as Repone K, ammonium chloride except the clean fracturing solution additive.Some organic clay stabilizerses also can, as, alkyl trimethyl ammonium chloride, the polyquaternium of small molecular weight, polyamine salt.
Embodiment
To further illustrate the using method of clean fracturing solution additive of the present invention, clean fracturing fluid and clean fracturing fluid with example below.
Example 1
108 gram palmityl trimethyl ammonium chlorides, 2 gram dimethyl dodecyl amine oxides, 30 gram sodium salicylates, 10 gram ethylene glycol ether acetates, 30 gram methyl alcohol and 10 gram water, mix, obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive, and 2% the aqueous solution promptly has tangible visco-elasticity.
Example 2
90 gram octadecyl trimethyl ammonium chloride, 6 gram dimethyl dodecyl amine oxides, 24 gram sodium salicylates, 15 gram ethylene glycol ether acetates, 15 gram ethanol and 10 gram water, mix, just can obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive.
Example 3
188 gram octadecyl trimethyl ammonium chloride, 4 gram Oleum Cocois alkyl dimethyl amine oxides, 48 gram sodium salicylates, 16 gram ethylene glycol monobutyl ether acetic esters, 44 gram ethylene glycol and 20 gram water, mix, obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive.
Example 4
150 gram octadecyl dihydroxy ethyl ammonio methacrylates, 5 gram Oleum Cocois alkyl dimethyl amine oxides, 35 gram Salicylate ammoniums, 15 gram ethylene glycol monobutyl ethers, 50 gram propylene glycol, 30 gram Virahols and 10 gram water, mix, obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive, and its zero pour is 30 ℃.
Example 5
300 grams, 18 trimethyl ammonium chlorides, 40 gram hexadecyl pyridinium bromides, 20 gram Oleum Cocois alkyl dimethyl amine oxides, 90 gram Whitfield's ointment diethanolamine salts, 30 gram Diethylene Glycol butyl ether, 50 gram propylene glycol, 40 gram ethylene glycol and 30 gram water, mix, obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive.
Example 6
350 gram tallow alkyl trimethyl ammonium chlorides, 10 gram Oleum Cocois alkyl dimethyl amine oxides, 90 gram Whitfield's ointment dimethylamine salts, the stupid ether of 30 gram ethylene glycol, 100 gram Virahols, 20 gram water, mix, obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive.
Example 7
1600 kilograms of soybean oil alkyl trimethyl ammonium chlorides, 100 kilograms of Oleum Cocois alkyl dimethyl amine oxides, 500 kilograms of Whitfield's ointment front three amine salt, 300 kilograms of ethylene glycol monobutyl ethers, 400 kilograms of Virahols, 100 kg of water, mix, obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive, and it has good flowability under the temperature more than-15 ℃.
Example 8
4200 kilograms of soybean oil alkyl trimethyl ammonium chlorides, 100 kilograms of Oleum Cocois alkyl dimethyl amine oxides, 1200 kilograms of Whitfield's ointment monomethyl amine salt, 400 kilograms of Diethylene Glycol monobutyl ethers, 400 kilograms of propylene glycol, 900 kilograms of ethanol, 900 kg of water, mix, obtain the liquid of 25 ℃ of following homogeneous transparents, this liquid can be used as the clean fracturing solution additive, and it still has good flowability under-20 ℃.
Example 9
The aqueous solution of the clean fracturing solution additive of the example 8 of preparation different concns is measured 40 ℃, 170S with the RV20 viscometer
-1Viscosity under the shearing condition, unit is mPaS, the result is as follows
| Measuring condition: example 8 clean fracturing solution additives, 40 ℃, 170S -1, sheared 20 minutes | |
| 2％ | 43 |
| 3％ | 62 |
| 4％ | 86 |
| 5％ | 102 |
| 6％ | 120 |
Prepare the aqueous solution of the clean fracturing solution additive of 4% example 8, usefulness RV20 viscometer is measured under the differing temps, 170S
-1Viscosity under the shearing condition, unit is mPaS, the result is as follows
| Measuring condition: 4% example, 8 clean fracturing solution additives, 170S -1 | |
| 20℃ | 151 |
| 40℃ | 86 |
| 50℃ | 75 |
| 60℃ | 62 |
| 70℃ | 51 |
| 80℃ | 40 |
Example 11:
Use clean fracturing fluid to carry out the waterpower sandfrac to the preceding 4-6 well 4+5 layer that is under the jurisdiction of Jilin Oil Field branch office.This well location is 48 blocks before Jilin Oil Field, and 1231.6 ~ 1240 meters of fractured well sections are penetrated out 5.8 meters of thickness, 5.8 meters of net thickness, 65 ℃ of bottom temperatures.There is not the nature production capacity before the pressure break.Use 85.85 meters of clean fracturing fluids altogether
3, the mean concns 4% of clean fracturing solution additive, wherein the spearhead consumption is 27.06 meters
3, 6.25 meters of overdisplacement volumes
3, 52.54 meters of sand-carrying agent consumptions
312.3 meters of propping agent consumptions
3, propping agent is the quartz sand of 0.65 ~ 0.9mm, average sand is than 22.8%, high sand ratio 50.47%.During construction, top pressure 19.2MPa, 3 meters of discharge capacities
3/ minute.After the pressure break, breaking glue solution viscosity is 1.8～3.6mPa.s, and the production fluid amount is 20.73 meters
3/ day, wherein oil offtake is 16.63 meters
3/ day.
Example 12
Use clean fracturing fluid to carry out the waterpower sandfrac to the preceding 4-6 well 8+9+10 layer that is under the jurisdiction of Jilin Oil Field branch office.This well location is 48 blocks before Jilin Oil Field, and 1252.8 ~ 1264 meters of fractured well sections are penetrated out 7.4 meters of thickness, 7.4 meters of net thickness, 65 ℃ of bottom temperatures.There is not the nature production capacity before the pressure break.Use 82.05 meters of clean fracturing fluids altogether
3, the mean concns 4% of clean fracturing solution additive, wherein the spearhead consumption is 29.93 meters
3, 3.09 meters of overdisplacement volumes
3, 49.03 meters of sand-carrying agent consumptions
312.63 meters of propping agent consumptions
3, propping agent is the quartz sand of 0.65 ~ 0.9mm, average sand is than 25.7%, high sand ratio 46.24%.During construction, top pressure 40.1MPa, 3 meters of discharge capacities
3/ minute.After the pressure break, breaking glue solution viscosity is 1.8～3.4mPa.s, and the production fluid amount is 24.49 meters
3/ day, wherein oil offtake is 19.56 meters
3/ day.
The construction of real well indicates situation and the construction process and the effect on stratum.
Claims (11)
1. a clean fracturing solution additive is characterized in that: be made up of following
1. carbon chain lengths is at least the above long alkyl chain length quaternary ammonium salt of 16 carbon atoms;
2. carbon chain lengths is the alkyl dimethyl amine oxide of 12 to 14 carbon atoms;
3. water miscible salicylate;
4. glycol ether;
5. low-carbon alcohol;
6. water;
Wherein: the mass percentage concentration scope of each component in the clean fracturing solution additive is respectively: long alkyl chain length quaternary ammonium salt general 30%～70%, best 45～60%; Alkyl dimethyl amine oxide general 0.5%～10%, best 1%～5%; Salicylate general 8%～20%, best 12%～18%; Glycol ether general 2%～10%, best 4%～6%; Low-carbon alcohol general 5%～25%, best 10%～20%; Surplus is a water.
2. a kind of clean fracturing solution additive according to claim 1 is characterized in that: described long alkyl chain length quaternary ammonium salt is a kind of or several mixtures in the following alkyl quaternary ammonium salts at least: the hexadecyl pyridinium bromide, hexadecylpyridinium chloride, palmityl trimethyl ammonium chloride, cetyl trimethylammonium bromide, octadecyl trimethyl ammonium chloride, octadecyl dihydroxy ethyl ammonio methacrylate, tallow base trimethyl ammonium chloride, the hydrogenated-tallow group trimethyl ammonium chloride, the soybean oil alkyl trimethyl ammonium chloride, the hydrogenated soybean oil alkyl trimethyl ammonium chloride, vegetable seeds oil base trimethyl ammonium chloride, hydrogenation vegetable seeds oil base trimethyl ammonium chloride, tallow base dihydroxy ethyl ammonio methacrylate, hydrogenated-tallow group dihydroxy ethyl ammonio methacrylate, soybean oil alkyl dihydroxy ethyl ammonio methacrylate, hydrogenated soybean oil alkyl dihydroxy ethyl ammonio methacrylate, vegetable seeds oil base dihydroxy ethyl ammonio methacrylate, hydrogenation vegetable seeds oil base dihydroxy ethyl ammonio methacrylate.
3. a kind of clean fracturing solution additive according to claim 1 is characterized in that: described water miscible salicylate be at least following salicylate a kind of or several mixtures: sodium salicylate, potassium salicylate, Salicylate ammonium, Trolamine salicylate salt, Whitfield's ointment diethanolamine salt, Whitfield's ointment Monoethanolamine MEA BASF salt, Whitfield's ointment Monomethylamine salt, Whitfield's ointment dimethylamine salt, Whitfield's ointment front three amine salt.
4. a kind of clean fracturing solution additive according to claim 1 is characterized in that: described glycol ether is a kind of or several mixtures in the following material at least: ethylene glycol ethyl ether, butyl glycol ether, ethylene glycol phenyl ether, ethylene glycol ether acetate, Diethylene Glycol butyl ether, ethylene glycol tertbutyl ether, diethylene glycol monobutyl ether acetic ester.
5. a kind of clean fracturing solution additive according to claim 1 is characterized in that: described low-carbon alcohol is a kind of or several mixtures in the following material at least: methyl alcohol, ethanol, Virahol, ethylene glycol, propylene glycol, glycerol.
6. the method on a pressure break stratum may further comprise the steps
1. use the fracturing liquid of right 1 described clean fracturing solution additive preparation right 7 indications, its fracturing liquid consists of:
A: the clean fracturing solution additive of right 1～right 6 indications;
B: organic cation clay stabilizer;
C: surplus is a water;
Clean fracturing solution additive general 2%～10%, commonly used 3%～7%; Organic cation clay stabilizer general 0.1%～2%, commonly used 0.5%～1%;
2. under the pressure that enough presses off the stratum, above-mentioned fracturing liquid is clamp-oned the stratum by the perf of oil gas well, the inner crack that forms on the stratum;
3. under enough pressure, keep above-mentioned fracture open, the mixed stream of fracturing liquid and propping agent composition is clamp-oned the crack;
4. remove pressure, make crack closure, allow brokenly fracturing fluid recovery (backflow) behind the glue go out ground.
7. the method on a kind of pressure break according to claim 6 stratum is characterized in that: in the method that reduces the liquid leak-off for rate of permeation in less than the waterfrac treatment process on 40 millidarcy stratum, the fracturing liquid that uses right 7 to require may further comprise the steps:
1. prepare right 7 described clean fracturing fluids;
2. under the pressure that enough presses off the stratum, the fracturing liquid of right 7 indications is clamp-oned the stratum by the perf of oil gas well, the inner crack that forms on the stratum;
3. clamp-on follow-up sand-carrying agent;
4. remove pressure, make crack closure, allow brokenly fracturing fluid recovery (backflow) behind the glue go out ground;
8. the method on a kind of pressure break according to claim 6 stratum is characterized in that: right 1 desired clean fracturing solution additive and above-mentioned fracturing liquid used in the waterfrac treatment that restriction stratum aquatic products goes out in the waterfrac treatment process, may further comprise the steps
1. prepare above-mentioned clean fracturing fluid;
2. under the pressure that does not press off the stratum, with top speed to stratum squeeze note clean fracturing fluid;
3. remove wellhead pressure, make the fracturing liquid rubber-breaking in the oil reservoir;
4. under the pressure that enough presses off the stratum, clean fracturing fluid is clamp-oned the stratum by the perf of oil gas well, the inner crack that forms on the stratum;
5. clamp-on sand-carrying agent;
6. remove pressure, make crack closure, allow brokenly fracturing fluid recovery (backflow) behind the glue go out ground.
9. the method on a kind of pressure break according to claim 6 stratum, it is characterized in that: the waterfrac treatment method that limits moisture oil reservoir aquatic products amount, in the waterfrac treatment process, use right 1 desired clean fracturing solution additive and above-mentioned fracturing liquid, may further comprise the steps
1. prepare described clean fracturing fluid;
2. under the pressure that enough presses off the stratum, clean fracturing fluid is clamp-oned the stratum by the perf of oil gas well, the inner crack that forms on the stratum;
3. clamp-on sand-carrying agent;
6. remove pressure, make crack closure, allow brokenly fracturing fluid recovery (backflow) behind the glue go out ground.
10. the method on a kind of pressure break according to claim 6 stratum is characterized in that: the stratum of indication is contained an oil reservoir at least or is contained a water layer at least.
10. the method on a kind of pressure break according to claim 6 stratum is characterized in that:, be 1 meter to the speed of stratum squeeze note liquid
3/ minute ~ 10 meters
3/ minute, generally at 2.5 meters
3/ minute ~ 6 meters
3/ minute; Employed wellhead pressure is generally at 10MPa ~ 150MPa.The temperature on described stratum is 20 ℃ ~ 100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100782537A CN1313563C (en) | 2004-09-23 | 2004-09-23 | Composition of clean fracturing fluid additive and method for fracturing stratum |
Applications Claiming Priority (1)
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