CN104265252B - A kind of heavy crude reservoir artificial oil stream displacement recovery method - Google Patents
A kind of heavy crude reservoir artificial oil stream displacement recovery method Download PDFInfo
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- CN104265252B CN104265252B CN201410409039.9A CN201410409039A CN104265252B CN 104265252 B CN104265252 B CN 104265252B CN 201410409039 A CN201410409039 A CN 201410409039A CN 104265252 B CN104265252 B CN 104265252B
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- oil
- foaming agent
- solvent
- well
- injection
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- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000011084 recovery Methods 0.000 title claims abstract description 55
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 35
- 239000004088 foaming agent Substances 0.000 claims abstract description 77
- 238000002347 injection Methods 0.000 claims abstract description 57
- 239000007924 injection Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 230000009467 reduction Effects 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 239000000243 solution Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 107
- 235000019198 oils Nutrition 0.000 claims description 104
- 239000006260 foam Substances 0.000 claims description 51
- -1 1- butyl -3- methylimidazoles hexafluorophosphate Chemical class 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 239000004094 surface-active agent Substances 0.000 claims description 23
- 239000002585 base Substances 0.000 claims description 22
- 229960003237 betaine Drugs 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 19
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 17
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 16
- 239000003381 stabilizer Substances 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 239000002608 ionic liquid Substances 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 10
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 8
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 8
- 150000002191 fatty alcohols Chemical class 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229920001577 copolymer Polymers 0.000 claims description 7
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 claims description 6
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical group CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 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 claims description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- 150000001450 anions Chemical class 0.000 claims description 6
- 239000003849 aromatic solvent Substances 0.000 claims description 6
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 6
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 6
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 5
- 239000002174 Styrene-butadiene Substances 0.000 claims description 5
- 239000003570 air Substances 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 5
- 230000001804 emulsifying effect Effects 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000003208 petroleum Substances 0.000 claims description 5
- 239000001294 propane Substances 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 239000011115 styrene butadiene Substances 0.000 claims description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920001400 block copolymer Polymers 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- YWFWDNVOPHGWMX-UHFFFAOYSA-N n,n-dimethyldodecan-1-amine Chemical compound CCCCCCCCCCCCN(C)C YWFWDNVOPHGWMX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- 239000004711 α-olefin Substances 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 3
- 235000019482 Palm oil Nutrition 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000000908 ammonium hydroxide Substances 0.000 claims description 3
- RTACIUYXLGWTAE-UHFFFAOYSA-N buta-1,3-diene;2-methylbuta-1,3-diene;styrene Chemical compound C=CC=C.CC(=C)C=C.C=CC1=CC=CC=C1 RTACIUYXLGWTAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- ABDBNWQRPYOPDF-UHFFFAOYSA-N carbonofluoridic acid Chemical compound OC(F)=O ABDBNWQRPYOPDF-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 3
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims description 3
- 235000019797 dipotassium phosphate Nutrition 0.000 claims description 3
- CNXJITYCNQNTBD-UHFFFAOYSA-L dipotassium;hexadecyl phosphate Chemical compound [K+].[K+].CCCCCCCCCCCCCCCCOP([O-])([O-])=O CNXJITYCNQNTBD-UHFFFAOYSA-L 0.000 claims description 3
- 125000005456 glyceride group Chemical group 0.000 claims description 3
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 claims description 3
- 239000002540 palm oil Substances 0.000 claims description 3
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 3
- 235000011009 potassium phosphates Nutrition 0.000 claims description 3
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 claims description 3
- OCVZNQCDPKRNDL-UHFFFAOYSA-N 2-hydroxyethyl-dimethyl-octadecylazanium;nitrate Chemical compound [O-][N+]([O-])=O.CCCCCCCCCCCCCCCCCC[N+](C)(C)CCO OCVZNQCDPKRNDL-UHFFFAOYSA-N 0.000 claims description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 claims description 2
- 241000335053 Beta vulgaris Species 0.000 claims description 2
- QFMBTSIEWDTEKV-UHFFFAOYSA-M Cl(=O)(=O)(=O)[O-].C(CCCCCCCCCCCCCCCCC)[N+](OCC)(C)C Chemical compound Cl(=O)(=O)(=O)[O-].C(CCCCCCCCCCCCCCCCC)[N+](OCC)(C)C QFMBTSIEWDTEKV-UHFFFAOYSA-M 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- QDYLMAYUEZBUFO-UHFFFAOYSA-N cetalkonium chloride Chemical compound CCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 QDYLMAYUEZBUFO-UHFFFAOYSA-N 0.000 claims description 2
- YMKDRGPMQRFJGP-UHFFFAOYSA-M cetylpyridinium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 YMKDRGPMQRFJGP-UHFFFAOYSA-M 0.000 claims description 2
- 229950003988 decil Drugs 0.000 claims description 2
- 229920000359 diblock copolymer Polymers 0.000 claims description 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N iso-quinoline Natural products C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 claims description 2
- 150000002596 lactones Chemical class 0.000 claims description 2
- ILRSCQWREDREME-UHFFFAOYSA-N lauric acid amide propyl betaine Natural products CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 claims description 2
- 150000002892 organic cations Chemical class 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 125000003944 tolyl group Chemical group 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims 1
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 claims 1
- 150000002460 imidazoles Chemical class 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- FZGRPBJBMUNMQH-UHFFFAOYSA-N trimethyl-$l^{3}-chlorane Chemical compound CCl(C)C FZGRPBJBMUNMQH-UHFFFAOYSA-N 0.000 claims 1
- 238000010795 Steam Flooding Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 description 17
- 238000011161 development Methods 0.000 description 11
- 239000010779 crude oil Substances 0.000 description 10
- 238000010793 Steam injection (oil industry) Methods 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000010796 Steam-assisted gravity drainage Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- HMDFOXQIYPYCRX-UHFFFAOYSA-N 1-(2-chloropropan-2-yl)-2-dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1C(C)(C)Cl HMDFOXQIYPYCRX-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- 241000193403 Clostridium Species 0.000 description 1
- 238000010794 Cyclic Steam Stimulation Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- QCCKPZOPTXCJPL-UHFFFAOYSA-N dodecyl(dimethyl)azanium;hydroxide Chemical compound [OH-].CCCCCCCCCCCC[NH+](C)C QCCKPZOPTXCJPL-UHFFFAOYSA-N 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 229910001412 inorganic anion Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- 150000002891 organic anions Chemical group 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention provides a kind of heavy crude reservoir artificial oil stream displacement recovery method.The method includes：Using straight well or horizontal well construction displacement well pattern；Oil-soluble viscosity reducer and solvent-borne type foaming agent are injected to repeating to replace in injection well, or to alternately injection oil-in-water emulsified viscosity reduction agent solution and oil resistant foaming agent high is repeated in injection well, producing well is continuously produced in injection process.The method provided using the present invention can realize all kinds of steam flooding reservoirs and conventional recovery method difficulty employ heavy crude reservoir effectively employ with exploitation, realize above-mentioned viscous crude economical and efficient exploitation and the purpose for greatly improving recovery ratio.
Description
Technical field
The present invention relates to a kind of recovery method of heavy crude reservoir, the artificial oil stream displacement of more particularly to a kind of heavy crude reservoir
Recovery method, belong to technical field of petroleum extraction.
Background technology
China's heavy crude reservoir is widely distributed in oil fields such as Xinjiang, the Liaohe River, triumpies, and its main body production technique is steam injection heating power
Production technique, according to incompletely statistics, current 70% proved reserves have been realized in commercial development.But still have some thick
Oily clostridium difficitis, due to its special reservoir condition, current conventional exploitation via steam injection technology is difficult to effectively employ.
(1) heavy crude reservoir, refers to the heavy crude reservoir of viscosity of crude under reservoir conditions more than 50,000 centipoises, this kind of heavy crude reservoir
Because underground crude oil viscosity is higher, during steam injection development, steam is larger into oil reservoir resistance, causes steam soak effectively to employ half
Footpath is small, and many round throughput predictions drastically decline, and recovery factor of cyclic steam stimulation is only 10% or so；Some heavy crude reservoirs have carried out steam
Development experiments are driven, but because viscosity of crude is big, resistance is big, it is difficult to driving pressure difference is set up between injection well and producing well, is received
Influenceed to oil reservoir inside anisotropism, the steam-front of injection will forward be advanced by leaps and bounds along the band that permeability is high, resistance is small, be caused
Channeling is serious, and steam swept volume is small, and recovery ratio is relatively low, and less than 25%, gas oil ratio is low, deficiency in economic performance.Some heavy crude reservoirs
Also SAGD has been carried out (referred to as:SAGD) test, but in a SAGD well group, the level of injection well and producing well
Segment distance is only 5 meters, and under oil reservoir heterogeneous conditions, the steam of top injection well injection will be along channeling to life under High Permeability Interval
Produce in well horizontal segment, cause horizontal segment development degree relatively low, averagely less than 50%, badly influence yield level, reservoir producing
Scope and recovery ratio.
(2) deep layer and ultra deep heavy crude reservoir, deep-layer heavy crude reservoir refer to heavy crude reservoir of the reservoir buried depth more than 2000m,
Because oil reservoir buries too deep, because steam injection is too big along journey heat loss, conventional steam injection development technology cannot be opened effectively at present
Hair.
(3) thin heavy oil, refers to heavy crude reservoir of the continuous effective pay thickiness below 5 meters, this kind of heavy crude reservoir by
Thin in oil reservoir, during steam injection development, steam top bottom layer heat loss is big, causes gas oil ratio relatively low, deficiency in economic performance, this
Class oil reservoir is difficult to realize economical and efficient exploitation at present.
" foam oil rheological behavior and its influence factor are tested " (deer rises, Li Zhaomin, Li Songyan etc., petroleum journal, and 2013,
34(5):1004-1009) point out, " foam oil stream " refer to during heavy crude reservoir dissolved gas drive, because Crude viscosity is higher,
Gas diffusion velocity is slower, and barometric gradient is larger, and it is in the rapid output of continuous gas phase that the gas of precipitation is not, but with minute bubbles shape
Formula is dispersed in crude oil, is moved with crude oil.This special seepage characteristic can improve rate of oil production, reduce gas-oil ratio and
Oil reservoir pressure drop rate, the dispersion of this oily bag gas is referred to as foam oil stream.
" heavy oil cold flow production foam oil factors affecting stability microcosmos experiment " (Zhao Ruidong, Wu Xiaodong, Wang Ruihe etc., grand celebration stone
Oily geology and exploitation, 2012,31 (6):99-103) point out, in Canada and the dissolved gas drive of the several heavy crude reservoirs of Venezuela
In recovery process, so-called " foam oil " phenomenon is occurred in that, it has abnormal development behavior：Rate of oil production, low life high
Produce gas-oil ratio, primary recovery rate high etc..Foam oil is that a kind of oil phase continuously disperses the crude oil of bubbles containing a large amount of, and gas phase is in
The form of many minute bubbles is trapped in oil phase, and it is mainly appeared on during the dissolved gas drive of some heavy crude reservoirs.
But as described above, foam oil phenomenon exists only in the heavy crude reservoir of original gassiness at present, accordingly, it is capable to no by innovation
Injected media and recovery method, make original gassiness and gas-free heavy crude reservoir " foam oil " also occur in process of production
Development features, reach rate of oil production high, low production gas-oil ratio, the purpose of high recovery rate, are a weights of following heavy oil development
Point research direction.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of heavy crude reservoir artificial oil stream displacement exploitation side
Method, the method goes for various viscosity, various buried depths, the heavy crude reservoir of various core intersections, without being noted in oil reservoir again
Enter steam, so as to reduce steam injection and cost；Meanwhile, the foam oil stream of formation is due to flow resistance system higher
Number, can effectively block the macropore formed in steam-drive process, effectively involve and the remaining oil of displacement steam drive non-master streamline is rich
Ji Qu, is capable of achieving all kinds of steam flooding reservoirs and employs the effective exploitation of heavy crude reservoir and significantly carry with conventional recovery method difficulty
The purpose of high recovery rate.
In order to achieve the above object, the invention provides a kind of heavy crude reservoir artificial oil stream displacement recovery method, its bag
Include following steps：
Step one：Using straight well or horizontal well construction displacement well pattern；
Step 2：To oil-soluble viscosity reducer is injected in injection well, viscosity reduction slug, the injection of the oil-soluble viscosity reducer are formed
It is 100-3000 tons to measure, and injection rate is 20-200 ton days, wherein, the oil-soluble viscosity reducer is A+B-Type ionic liquid with it is molten
The composition of agent, the A+B-The amount of type ionic liquid accounts for the 0.1wt%-10wt% of the oil-soluble viscosity reducer total amount；
Step 3：To solvent-borne type foaming agent is injected in injection well, foam slug, the injection of the solvent-borne type foaming agent are formed
It is 100-3000 tons to measure, and injection rate is 50-200 ton days, wherein, the solvent-borne type foaming agent is the first foaming agent, first steady
The composition of infusion, solvent and gas, the liquid of the solvent-borne type foaming agent is by the first foaming agent, the first foam stabilizer and solvent group
Into concentration of first foaming agent in the liquid of solvent-borne type foaming agent is 0.01wt%-0.5wt%, first foam stabilizing
Concentration of the agent in the liquid of solvent-borne type foaming agent is 0.01wt%-0.1wt%, under reservoir temperature and pressure, the solvent
The gas-liquid volume ratio of type foaming agent is 1:1-3:1；
Wherein, step 2 and step 3 are alternately repeated is carried out, and producing well is continuously produced in injection process, when producing well is aqueous
When rate reaches 95%, stop production.
In the above-mentioned heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, it is preferable that the A of use+B-Type
A in ionic liquid+Be organic cation, specifically include glyoxaline cation, pyridylium, isoquinoline cation moiety,
Ammonium or quaternary ammonium cation；It is highly preferred that quaternary ammonium cation includes trimethyl quaternary ammonium cation, dodecyl dimethyl
Benzyl quaternary ammonium cation or octadecyldimethyl ethoxy quaternary ammonium cation；
The A of use+B-B in type ionic liquid-It is organic anion or inorganic anion；
It is highly preferred that A+B- types ionic liquid includes DTAC, dodecyl dimethyl benzyl chloride
Change ammonium, octadecyldimethyl hydroxyethyl ammonium nitrate, octadecyldimethyl ethoxy ammonium perchlorate, 1- butyl -3- methyl miaows
Azoles hexafluorophosphate or hexadecylpyridinium chloride；
Solvent in step 2 is acetonitrile, side chain and straight-chain fatty alcohol, the fragrance of dimethylformamide, 3-20 carbon atom
The combination of one or more in race's solvent, dimethyl ether and naphtha；It is highly preferred that use 3-20 carbon atom side chain with
Straight-chain fatty alcohol includes isopropanol, butanol or amylalcohol, and the aromatic solvent of use includes toluene, benzene or dimethylbenzene.
In the above-mentioned heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, it is preferable that the first of use
Foaming agent includes alpha-alkene sulfonate and/or perfluoroalkyl betain；
The first foam stabilizer for using is block copolymer；The block copolymer of use includes styrene-isoprene copolymerization
Thing, styrene-isoprene diblock polymer, styrene-isoprene triblock polymer, styrene-isoprene are more
Block polymer, SB, styrene-butadiene diblock copolymer, styrene-butadiene three block
Polymer, styrene-butadiene multi-block polymer, styrene-isoprene-butadiene copolymer, styrene-isoamyl two
One or more combination in alkene-butadiene triblock polymer and styrene-isoprene-butadiene multi-block polymer；
Solvent in step 3 is side chain and one kind or several of straight-chain fatty alcohol, aromatic solvent, dimethyl ether and naphtha
Plant combination；It is highly preferred that the side chain for using and straight-chain fatty alcohol are ethanol, isopropanol, butanol or amylalcohol, the aromatic series of use is molten
Agent is toluene, benzene or dimethylbenzene；
Gas is one or more in methane, ethane, propane, carbon dioxide, ammonia, flue gas, air and nitrogen
Combination；
It is highly preferred that the alpha-alkene sulfonate for using includes C12-C18Alpha-olefin sodium sulfonate (AOS)；
It is highly preferred that the perfluoroalkyl betain for using includes n-C8F17SO2N(H)CH2CH2CH2N(CH3)2CH2COO-。
In the above-mentioned heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, with first foaming agent
Gross weight is counted for 100wt%, it is preferable that the first foaming agent of use also can be by the silicone oil of 20wt%-50wt%, 20wt%-
The organosilicon polyoxyalkylene copolymers of 50wt% and the fluorine-containing organic silicon copolyether composition of 20wt%-50wt%；More preferably
Ground, the silicone oil, organosilicon polyoxyalkylene copolymers, the mean molecule quantity of fluorine-containing organic silicon copolyether three are 3000-
10000g/mol, and the molecular weight of wherein at least one is not less than 5000g/mol.
In the above-mentioned heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, it is preferable that oil-soluble viscosity reduction
Agent is 20%-99% to the viscosity break ratio of viscous crude；The half-life period of solvent-borne type foaming agent is more than 30 days, and resistance coefficient is more than 50.
Present invention also offers a kind of heavy crude reservoir artificial oil stream displacement recovery method, following steps are specifically included：
Step one：Using straight well or horizontal well construction displacement well pattern；
Step 2：To oil-in-water emulsified viscosity reduction agent solution is injected in injection well, viscosity reduction slug, the oil-in-water emulsified are formed
The injection rate of viscosity reduction agent solution is 100-3000 tons, and injection rate is 20-200 ton days, wherein, the oil-in-water emulsified viscosity reduction
Agent solution is made up of oil-in-water type emulsion thinner and base fluid, and the oil-in-water type emulsion thinner is in oil-in-water emulsified thinner
Concentration in solution is 0.1wt%-10wt%；
Step 3：To oil resistant foaming agent high is injected in injection well, foam slug, the injection of the oil resistant foaming agent high are formed
It is 100-3000 tons to measure, injection rate be 50-200 ton days, wherein, the oil resistant foaming agent high be the foaming agent of oil resistant high second,
The composition of the second foam stabilizer, base fluid and gas, the liquid of the oil resistant foaming agent high by the second foaming agent, the second foam stabilizer and
Base fluid is constituted, and concentration of second foaming agent in the liquid of oil resistant foaming agent high is 0.01wt%-0.5wt%, described the
Concentration of two foam stabilizers in the liquid of oil resistant foaming agent high is 0.01wt%-0.3wt%, under reservoir temperature and pressure, institute
The gas-liquid volume ratio for stating oil resistant foaming agent high is 1:1-3:1；
Wherein, step 2 and step 3 are alternately repeated is carried out, and producing well is continuously produced in injection process, when producing well is aqueous
When rate reaches 95%, stop production.
In the above-mentioned heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, with the oil-in-water type emulsion
The gross weight of thinner be 100wt% meter, it is preferable that the oil-in-water type emulsion thinner of use by 30wt%-50wt% hydrogen
Change palm oil glycerides, the hexadecanyl phosphate potassium of 15wt%-35wt%, the hexadecanol of 20wt%-30wt%, 5wt%-
The potassium phosphate of 15wt% and the potassium hydrogen phosphate composition of 4wt%-10wt%；
Base fluid in step 2 is water.
In the above-mentioned heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, it is preferable that the second foaming agent
For fluorocarbon surfactant is formed with both sexes hc-surfactant or anion hc-surfactant compounding, according to conventional multiple
Compounded with operation；The fluorocarbon surfactant of use is lived with both sexes hc-surfactant or the hydrocarbon surface of anion
Property agent mass ratio be 1:10-1:20；
The fluorocarbon surfactant of use includes perfluoroalkyl betain, perfluor sulfobetaines and perfluorocarboxylic acid glycine betaine
In the combination of one or more；
The both sexes hc-surfactant of use include alkyl betaine, one kind of sulfobetaines and carboxylic acid glycine betaine or
Several combinations；
The anion hc-surfactant of use includes alpha-alkene sulfonate, alkyl diphenyl ether disulfonate and oil sulphur
The combination of one or more of hydrochlorate；
The second foam stabilizer for using is the nano SiO 2 particle of 10-1000nm for particle diameter；
Gas is one or more in methane, ethane, propane, carbon dioxide, ammonia, flue gas, air and nitrogen
Combination；
The base fluid used in step 3 is in NaOH, potassium hydroxide, ammonium hydroxide and TBAH
The aqueous solution of kind or several compositions, the concentration of base fluid is 0.005wt%-5wt%；
It is highly preferred that use perfluoroalkyl betain, perfluor sulfobetaines, perfluorocarboxylic acid glycine betaine three it is average
Molecular weight is 1000-10000g/mol, and the molecular weight of wherein at least one is not less than 2000g/mol；
It is highly preferred that the alkyl betaine for using includes dodecyldimethylammonium hydroxide inner salt, dodecyldimethylamine base beet
The combination of one or more in alkali, octodecyl betaine and dodecanamide propyl decil lactone；
It is highly preferred that the sulfobetaines for using includes dodecyl dimethyl azochlorosulfonate propyl lycine, dodecyldimethylamine
One kind in base azochlorosulfonate propyl lycine, hexadecyldimethyl benzyl ammonium azochlorosulfonate propyl lycine and octadecyldimethyl azochlorosulfonate propyl lycine
Or several combinations；
It is highly preferred that the carboxylic acid glycine betaine for using includes dodecyl dihydroxy ethyl glycine betaine or octadecyl dihydroxy ethyl
Glycine betaine；
It is highly preferred that the alpha-alkene sulfonate for using includes C12-C18Alpha-olefin sodium sulfonate (AOS)；
It is highly preferred that the alkyl diphenyl ether disulfonate for using includes alkyl diphenyl ether disulphonic acid sodium；
It is highly preferred that the petroleum sulfonate for using includes R-SO3Na, wherein R are C14-C22Alkyl.
The present invention provide above-mentioned heavy crude reservoir artificial oil stream displacement recovery method in, it is preferable that use it is high resistance to
The highest oil resistant saturation degree of oil whip agent is more than 60%, and half-life period is more than 30 days, and resistance coefficient is more than 50.
In the above-mentioned heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, it is preferable that the water bag of use
Oily reducing viscosity by emulsifying agent solution is 20%-99% to the viscosity break ratio of viscous crude, and the stable emulsifying time is more than 30 days.
The heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, with following technical advantage：
1st, oil-soluble viscosity reducer is initially injected, oil-soluble viscosity reducer of the invention can realize the efficient irreversible drop of viscous crude
Viscous, the viscous crude after viscosity reduction is distributed in the affected area of oil-soluble viscosity reducer in a highly dispersed state, and this hair is injected on this basis
Bright solvent-borne type foaming agent, because the solvent-borne type foam for being formed is oil phase foam, you can keep good foaminess in crude oil
Can simultaneously produce stabilization foam, therefore can mix with crude oil in oil displacement process and under shear action formation stable dispersion plan
Single-phase foam oil stream, its flow performance is foam stabilization, degassing, significantly viscosity reduction is difficult, so as to formed have with primary foam oil
The artificial foam oil of same rheology characteristic.Because the foam of stabilization is present in crude oil oil stream, the bullet of crude oil is can greatly improve
Performance amount, reduces viscosity of crude and improves crude output.
2nd, oil-in-water emulsified viscosity reduction agent solution is initially injected, in shear action after reducing viscosity by emulsifying agent solution chance oil of the invention
Under can quickly form oil-in-water emulsion, crude oil is packed to the oil-in-water type particle of high degree of dispersion, so that its viscosity is big
Width reduction, the crude oil being emulsified has fluid ability higher in oil reservoir, especially causes that viscous crude, can be in oil after emulsification
Just there is preferable mobility in layer, displacement system can be set up between injection well and producing well.And then injection one is high
Oil resistant foaming agent, the second foaming agent, the second foam stabilizer and base fluid in oil resistant foaming agent high of the invention are formed has oil resistant high
Saturation degree and the foam system of stabilization time more long so that the foam of injection can be resistant to the non-master of early stage steam injection or waterflooding extraction
The oil saturation high in streamline region, so that its foam will not quickly vanish in oil-containing region high.The aerated fluid of injection with
Oil-in-water type particle after reducing viscosity by emulsifying is advanced to producing well together, and aerated fluid constantly will in motion process in shear action
The oil-in-water type particle dispersion of reducing viscosity by emulsifying, so as to form the foam oil stream of high degree of dispersion, i.e. artificial oil stream.
3rd, two kinds of recovery methods that the present invention is provided are applied to various viscosity, various buried depths, the viscous crude of various core intersections
Oil reservoir, without to steam or water is injected in oil reservoir, so as to reduce the step of steam/water injects and reducing cost of winning again；
Meanwhile, the foam oil stream of formation can effectively blocked and formed in steam-drive process due to flow resistance coefficient higher
Macropore, effectively involve and displacement steam drive non-master streamline remaining oil enriched area, realize the effective of all kinds of heavy crude reservoirs
Develop and greatly improve the purpose of recovery ratio.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and beneficial effect, now to skill of the invention
Art scheme carry out it is described further below, but it is not intended that to it is of the invention can practical range restriction.
Embodiment 1
Technical scheme is illustrated by taking certain heavy crude reservoir as an example below, it should be noted that the present invention is not limited to
The heavy crude reservoir.Oil reservoir depth is 300m, and the viscosity of crude under reservoir temperature is 100000 centipoises, and original average reservoir temperature is
20 DEG C, original average reservoir pressure is 2.5MPa.Early stage deployment straight well well pattern steam drive development 4 years, uses exploitation of the invention
Instantaneous gas oil ratio before method is 0.07, and vapour is driven without economic benefit, and vapour driving oil recovery yield is 16%.
Present embodiments provide a kind of heavy crude reservoir artificial oil stream displacement exploitation side for being applied to above-mentioned certain heavy crude reservoir
Method, specifically includes following steps：
(1) well spacing parameter, experiment is carried out using a well group in existing old well well pattern, is straight well displacement well pattern, note
It is 70m to enter well with the horizontal range of producing well.
(2) to oil-soluble viscosity reducer is injected in injection well, oil-soluble viscosity reduction slug, the injection rate of oil-soluble viscosity reducer are formed
It it is 200 tons, injection rate is 40 ton days；
The oil-soluble viscosity reducer for using is A+B-The composition of type ionic liquid and solvent, the A+B-Type ionic liquid is
The 0.5wt% of oil-soluble viscosity reducer；A+B-Type ionic liquid is DTAC；
The solvent for using is naphtha；
The oil-soluble viscosity reducer for using is 70% to the viscosity break ratio of viscous crude；The half-life period of solvent-borne type foaming agent is 50 days, resistance
Force coefficient is 60.
(3) to solvent-borne type foaming agent is injected in injection well, foam slug is formed, the injection rate of solvent-borne type foaming agent is 200
Ton, injection rate is 50 ton days；
The solvent-borne type foaming agent for using is the composition of foaming agent, foam stabilizer, solvent and gas；
Wherein, foaming agent is that the molecular formula of perfluoroalkyl betain is C15H15F17N2O4S；Foam stabilizer is styrene-fourth two
Alkene diblock polymer；Solvent is dimethyl ether；Gas is methane；
Foaming agent concentration in the liquid of solvent-borne type foaming agent is 0.1wt%, liquid of the foam stabilizer in solvent-borne type foaming agent
Concentration in body is 0.1wt%；Under reservoir temperature and pressure, the gas-liquid volume ratio of foaming agent is 1:1.
Wherein, (2) are repeated alternately with (3), and in injection process, the producing well in well pattern is continuously produced, and works as production
When well moisture content reaches 95%, stop production.
After the artificial oil stream displacement recovery method of the present embodiment, the pilot wellgroup is effective on the basis of steam drive
Production time is 5 years, and recovery ratio is driven than steam and improves 15%.
Embodiment 2
Technical scheme is illustrated by taking certain heavy crude reservoir as an example below, it should be noted that the present invention is not limited to
The heavy crude reservoir.Oil reservoir depth is 800m, and the viscosity of crude under reservoir temperature is 2000 centipoises, and original average reservoir temperature is 40
DEG C, original average reservoir pressure is 8MPa.Early stage deployment horizontal well patterns steam drive development 4 years, uses exploitation side of the invention
Instantaneous moisture content before method is 98%, and steam is driven without economic benefit, and vapour driving oil recovery yield is 12%.
Present embodiments provide a kind of heavy crude reservoir artificial oil stream displacement exploitation side for being applied to above-mentioned certain heavy crude reservoir
Method, specifically includes following steps：
(1) well spacing parameter, experiment is carried out using a well group in existing old well well pattern, is horizontal well displacement well pattern,
Injection well is 140m with the horizontal range of producing well.
(2) to oil-in-water emulsified viscosity reduction agent solution is injected in injection well, oil-in-water emulsified viscosity reduction slug, oil-in-water breast are formed
The injection rate for changing viscosity reduction agent solution is 1000 tons, and injection rate is 200 ton days；
Wherein, the oil-in-water emulsified viscosity reduction agent solution of use is made up of oil-in-water type thinner and base fluid；
Oil-in-water type thinner by the hydrogenated palm oil glycerides of 30wt%, the hexadecanyl phosphate potassium of 20wt%,
The potassium hydrogen phosphate composition of the hexadecanol of 30wt%, the potassium phosphate of 10wt% and 10wt%；
The base fluid for using is water；
Concentration of the oil-in-water type thinner in oil-in-water emulsified viscosity reduction agent solution is 0.5wt%；
Oil-in-water emulsified viscosity reduction agent solution is 90% to the viscosity break ratio of viscous crude, and the stable emulsifying time is 90 days.
(3) to oil resistant foaming agent high is injected in injection well, foam slug is formed, the injection rate of oil resistant foaming agent high is 1000
Ton, injection rate is 200 ton days；
Wherein, the oil resistant foaming agent high for using is the composition of oil resistant foaming agent high, foam stabilizer, base fluid and gas；
The foaming agent for using is formed for fluorocarbon surfactant with both sexes hc-surfactant compounding；Fluoro-carbon surface active
Agent is 1 with the mass ratio of both sexes hc-surfactant:10；The fluorocarbon surfactant for using divides for perfluor sulfobetaines
Minor is C15H15F17N2O4S；The both sexes hc-surfactant is dodecyl dihydroxy ethyl glycine betaine；
The foam stabilizer for using is the nano SiO 2 particle of 100nm for particle diameter；
The base fluid for using for etc. the NaOH of quality, potassium hydroxide, ammonium hydroxide, TBAH composition water
Solution, the concentration of base fluid is 0.5wt%；
Concentration of the foaming agent in the liquid of oil resistant foaming agent high is 0.3wt%；Liquid of the foam stabilizer in oil resistant foaming agent high
Concentration in body is 0.01wt%；The gas is methane, ethane, propane, carbon dioxide, ammonia, the flue of equal quality ratio
Gas, air, nitrogen composition；Under reservoir temperature and pressure, the gas-liquid volume ratio of oil resistant foaming agent high is 3:1；
The highest oil resistant saturation degree of oil resistant foaming agent high is 70%, and the half-life period of oil resistant foaming agent high is 70 days, resistance system
Number 100.
Wherein, (2) are repeated alternately with (3), and in injection process, the producing well in well pattern is continuously produced, and works as production
When well moisture content reaches 95%, stop production.
After the artificial oil stream displacement recovery method of the present embodiment, the pilot wellgroup is effective on the basis of steam drive
Production time is 8 years, and recovery ratio is driven than steam and improves 36%.
In sum, the heavy crude reservoir artificial oil stream displacement recovery method that the present invention is provided, can form in oil reservoir
Foam stabilization, be difficult degassing, significantly viscosity reduction dispersing foam oil stream, and can block steam drive macropore, injection well with production
Displacement system is set up between well, the effective exploitation of heavy crude reservoir is realized and is greatly improved recovery ratio.
Claims (18)
1. a kind of heavy crude reservoir artificial oil stream displacement recovery method, it is comprised the following steps：
Step one：Using straight well or horizontal well construction displacement well pattern；
Step 2：To oil-soluble viscosity reducer is injected in injection well, viscosity reduction slug is formed, the injection rate of the oil-soluble viscosity reducer is
100-3000 tons, injection rate is 20-200 ton days, wherein, the oil-soluble viscosity reducer is A+B-Type ionic liquid and solvent
Composition, the A+B-The amount of type ionic liquid accounts for the 0.1wt%-10wt% of the oil-soluble viscosity reducer total amount；Described solvent
It is acetonitrile, dimethylformamide, the side chain and straight-chain fatty alcohol of 3-20 carbon atom, aromatic solvent, dimethyl ether and naphtha
In the combination of one or more；The A+B-A in type ionic liquid+Be organic cation, specifically include imidazoles sun from
Son, pyridylium, isoquinoline cation moiety, ammonium or quaternary ammonium cation；
Step 3：To solvent-borne type foaming agent is injected in injection well, foam slug is formed, the injection rate of the solvent-borne type foaming agent is
100-3000 tons, injection rate is 50-200 ton days, wherein, the solvent-borne type foaming agent is the first foaming agent, the first foam stabilizing
The composition of agent, solvent and gas, the liquid in the solvent-borne type foaming agent is by the first foaming agent, the first foam stabilizer and solvent group
Into concentration of first foaming agent in the liquid of solvent-borne type foaming agent is 0.01wt%-0.5wt%, first foam stabilizing
Concentration of the agent in the liquid of solvent-borne type foaming agent is 0.01wt%-0.1wt%, under reservoir temperature and pressure, the solvent
The gas-liquid volume ratio of type foaming agent is 1:1-3:1；
The gas is one or more in methane, ethane, propane, carbon dioxide, ammonia, flue gas, air and nitrogen
Combination；
Wherein, step 2 and step 3 are alternately repeated is carried out, and producing well is continuously produced in injection process.
2. recovery method according to claim 1, wherein, the quaternary ammonium cation includes trimethyl quaternary ammonium sun
Ion, dodecyl dimethyl benzyl quaternary ammonium cation or octadecyldimethyl ethoxy quaternary ammonium cation.
3. recovery method according to claim 1, wherein, the A+B-Type ionic liquid includes trimethyl chlorine
Change ammonium, dodecyl benzyl dimethyl ammonium chloride, octadecyldimethyl hydroxyethyl ammonium nitrate, octadecyldimethyl ethoxy
Ammonium perchlorate, 1- butyl -3- methylimidazoles hexafluorophosphate or hexadecylpyridinium chloride.
4. recovery method according to claim 1, wherein, the side chain and straight-chain fatty alcohol of the 3-20 carbon atom include
Isopropanol, butanol or amylalcohol, the aromatic solvent include toluene, benzene or dimethylbenzene.
5. recovery method according to claim 1, wherein, first foaming agent includes alpha-alkene sulfonate and/or complete
Fluoroalkyl glycine betaine；
First foam stabilizer is block copolymer；The block copolymer includes styrene-isoprene copolymer, benzene second
Alkene-diblock polymer, styrene-isoprene triblock polymer, many block polymerizations of styrene-isoprene
Thing, SB, styrene-butadiene diblock copolymer, styrene-butadiene triblock polymer, benzene
Ethylene-butylene multi-block polymer, styrene-isoprene-butadiene copolymer, styrene-isoprene-butadiene three
One or more combination in block polymer and styrene-isoprene-butadiene multi-block polymer；
Solvent described in step 3 is side chain and one kind or several of straight-chain fatty alcohol, aromatic solvent, dimethyl ether and naphtha
Plant combination.
6. recovery method according to claim 5, wherein, the alpha-alkene sulfonate includes C12-C18Alpha-olefin sulfonic acid
Sodium；The molecular formula of the perfluoroalkyl betain is C15H15F17N2O4S。
7. recovery method according to claim 5, wherein, the side chain and straight-chain fatty alcohol are ethanol, isopropanol, butanol
Or amylalcohol, the aromatic solvent is toluene, benzene or dimethylbenzene.
8. recovery method according to claim 1, wherein, counted by 100wt% of the gross weight of first foaming agent, institute
State silicone oil, the organosilicon polyoxyalkylene copolymers of 20wt%-50wt%, 20wt%- of first foaming agent by 20wt%-50wt%
The fluorine-containing organic silicon copolyether composition of 50wt%.
9. recovery method according to claim 8, wherein, it is the silicone oil, organosilicon polyoxyalkylene copolymers, fluorine-containing organic
The mean molecule quantity of silicon copolyether three is 3000-10000g/mol, and the molecular weight of wherein at least one is not less than
5000g/mol。
10. recovery method according to claim 1, wherein, the oil-soluble viscosity reducer is 20%- to the viscosity break ratio of viscous crude
99%；The half-life period of the solvent-borne type foaming agent is more than 30 days, and resistance coefficient is more than 50.
A kind of 11. heavy crude reservoir artificial oil stream displacement recovery methods, it is comprised the following steps：
Step one：Using straight well or horizontal well construction displacement well pattern；
Step 2：To oil-in-water emulsified viscosity reduction agent solution is injected in injection well, viscosity reduction slug, the oil-in-water emulsified viscosity reduction are formed
The injection rate of agent solution is 100-3000 tons, and injection rate is 20-200 ton days, wherein, the oil-in-water emulsified thinner is molten
Liquid is made up of oil-in-water type emulsion thinner and base fluid, and the oil-in-water type emulsion thinner is in oil-in-water emulsified viscosity reduction agent solution
In concentration be 0.1wt%-10wt%；
Step 3：To oil resistant foaming agent high is injected in injection well, foam slug is formed, the injection rate of the oil resistant foaming agent high is
100-3000 tons, injection rate is 50-200 ton days, wherein, the oil resistant foaming agent high is the second foaming agent, the second foam stabilizing
The composition of agent, base fluid and gas, the liquid of the oil resistant foaming agent high is by the second foaming agent, the second foam stabilizer and base fluid group
Into concentration of second foaming agent in the liquid of oil resistant foaming agent high is 0.01wt%-0.5wt%, second foam stabilizing
Concentration of the agent in the liquid of oil resistant foaming agent high is 0.01wt%-0.3wt%, and under reservoir temperature and pressure, the height is resistance to
The gas-liquid volume ratio of oil whip agent is 1:1-3:1；
Wherein, step 2 and step 3 are alternately repeated is carried out, and producing well is continuously produced in injection process.
12. recovery methods according to claim 11, wherein, the gross weight with the oil-in-water type emulsion thinner is
100wt% is counted, hydrogenated palm oil glycerides, 15wt%- of the oil-in-water type emulsion thinner by 30wt%-50wt%
The hexadecanyl phosphate potassium of 35wt%, the hexadecanol of 20wt%-30wt%, the potassium phosphate of 5wt%-15wt% and 4wt%-
The potassium hydrogen phosphate composition of 10wt%；
Base fluid described in step 2 is water.
13. recovery methods according to claim 11, wherein, second foaming agent is fluorocarbon surfactant and both sexes
Hc-surfactant or anion hc-surfactant compounding are formed；
The fluorocarbon surfactant is 1 with the mass ratio of both sexes hc-surfactant or anion hc-surfactant:
10-1:20；
The fluorocarbon surfactant includes in perfluoroalkyl betain, perfluor sulfobetaines and perfluorocarboxylic acid glycine betaine
Plant or several combinations；The both sexes hc-surfactant is included in alkyl betaine, sulfobetaines and carboxylic acid glycine betaine
The combination of one or more；The anion hc-surfactant includes alpha-alkene sulfonate, alkyl diphenyl ether disulphonic acid
The combination of one or more of salt and petroleum sulfonate；
Second foam stabilizer is that particle diameter is the nano SiO 2 particle of 10-1000nm；
Base fluid described in step 3 for the one kind in NaOH, potassium hydroxide, ammonium hydroxide and TBAH or
The aqueous solution of several compositions, the concentration of the base fluid is 0.005wt%-5wt%；
The gas is one or more in methane, ethane, propane, carbon dioxide, ammonia, flue gas, air and nitrogen
Combination.
14. recovery methods according to claim 13, wherein, it is the perfluoroalkyl betain, perfluor sulfobetaines, complete
The mean molecule quantity of carboxylic acid fluoride glycine betaine three is 1000-10000g/mol, and the molecular weight of wherein at least one is not less than
2000g/mol。
15. recovery methods according to claim 13, wherein, the alkyl betaine includes dodecyl dimethyl beet
In alkali, dodecyldimethylamine base glycine betaine, octodecyl betaine and dodecanamide propyl decil lactone one
Plant or several combinations；The sulfobetaines includes dodecyl dimethyl azochlorosulfonate propyl lycine, dodecyldimethylamine base sulphur
One kind or several in CAB, hexadecyldimethyl benzyl ammonium azochlorosulfonate propyl lycine and octadecyldimethyl azochlorosulfonate propyl lycine
The combination planted；The carboxylic acid glycine betaine includes dodecyl dihydroxy ethyl glycine betaine or octadecyl dihydroxy ethyl glycine betaine.
16. recovery methods according to claim 13, wherein, the alpha-alkene sulfonate includes C12-C18Alpha-olefin sulphur
Sour sodium；The alkyl diphenyl ether disulfonate includes alkyl diphenyl ether disulphonic acid sodium；The petroleum sulfonate includes R-SO3Na,
Wherein, R is C14-C22Alkyl.
17. recovery methods according to claim 11, wherein, viscosity reduction of the oil-in-water emulsified viscosity reduction agent solution to viscous crude
Rate is 20%-99%, and the stable emulsifying time is more than 30 days.
18. recovery methods according to claim 11, wherein, the highest oil resistant saturation degree of the oil resistant foaming agent high is more than
60%, half-life period is more than 30 days, and resistance coefficient is more than 50.
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