CN109312234A - 用于蒸汽提取沥青的组合物 - Google Patents
用于蒸汽提取沥青的组合物 Download PDFInfo
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- CN109312234A CN109312234A CN201780035167.3A CN201780035167A CN109312234A CN 109312234 A CN109312234 A CN 109312234A CN 201780035167 A CN201780035167 A CN 201780035167A CN 109312234 A CN109312234 A CN 109312234A
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- China
- Prior art keywords
- capped
- glycol
- ether
- ethylene oxide
- glycol ethers
- Prior art date
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- Pending
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- 239000000203 mixture Substances 0.000 title claims abstract description 40
- 238000000605 extraction Methods 0.000 title description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 120
- -1 glycol ethers Chemical class 0.000 claims abstract description 115
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 97
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000005977 Ethylene Substances 0.000 claims abstract description 90
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000007789 sealing Methods 0.000 claims abstract description 78
- 239000003027 oil sand Substances 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 47
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 24
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 15
- 238000004064 recycling Methods 0.000 claims description 14
- 238000005065 mining Methods 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 10
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 10
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 9
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- BPIUIOXAFBGMNB-UHFFFAOYSA-N 1-hexoxyhexane Chemical compound CCCCCCOCCCCCC BPIUIOXAFBGMNB-UHFFFAOYSA-N 0.000 claims description 7
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims description 6
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical group NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 6
- 206010001497 Agitation Diseases 0.000 claims description 6
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 6
- 125000005037 alkyl phenyl group Chemical group 0.000 claims description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N n-propyl alcohol Natural products CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 6
- YHCCCMIWRBJYHG-UHFFFAOYSA-N 3-(2-ethylhexoxymethyl)heptane Chemical compound CCCCC(CC)COCC(CC)CCCC YHCCCMIWRBJYHG-UHFFFAOYSA-N 0.000 claims description 5
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 claims description 5
- BTIMJGKRHNTHIU-UHFFFAOYSA-N 1-(2-ethylhexoxy)propan-2-ol Chemical compound CCCCC(CC)COCC(C)O BTIMJGKRHNTHIU-UHFFFAOYSA-N 0.000 claims description 3
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 2
- OHJYHAOODFPJOD-UHFFFAOYSA-N 2-(2-ethylhexoxy)ethanol Chemical compound CCCCC(CC)COCCO OHJYHAOODFPJOD-UHFFFAOYSA-N 0.000 claims description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims 2
- 150000002170 ethers Chemical class 0.000 claims 2
- 229940031098 ethanolamine Drugs 0.000 claims 1
- 239000001294 propane Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 26
- 239000010426 asphalt Substances 0.000 description 22
- 238000011084 recovery Methods 0.000 description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- WWUVJRULCWHUSA-UHFFFAOYSA-N 2-methyl-1-pentene Chemical compound CCCC(C)=C WWUVJRULCWHUSA-UHFFFAOYSA-N 0.000 description 12
- 238000010796 Steam-assisted gravity drainage Methods 0.000 description 10
- 239000002585 base Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 239000000654 additive Substances 0.000 description 9
- 239000006260 foam Substances 0.000 description 9
- 239000004576 sand Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- UJEGHEMJVNQWOJ-UHFFFAOYSA-N 1-heptoxyheptane Chemical compound CCCCCCCOCCCCCCC UJEGHEMJVNQWOJ-UHFFFAOYSA-N 0.000 description 8
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 150000001335 aliphatic alkanes Chemical group 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000000284 extract Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 4
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 4
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 3
- UPGSWASWQBLSKZ-UHFFFAOYSA-N 2-hexoxyethanol Chemical compound CCCCCCOCCO UPGSWASWQBLSKZ-UHFFFAOYSA-N 0.000 description 3
- IIBWEWUPWKQJAW-UHFFFAOYSA-N 4-(2-propylheptoxymethyl)nonane Chemical compound CCCCCC(CCC)COCC(CCC)CCCCC IIBWEWUPWKQJAW-UHFFFAOYSA-N 0.000 description 3
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- OCDXZFSOHJRGIL-UHFFFAOYSA-N cyclohexyloxycyclohexane Chemical compound C1CCCCC1OC1CCCCC1 OCDXZFSOHJRGIL-UHFFFAOYSA-N 0.000 description 3
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 3
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- NKJOXAZJBOMXID-UHFFFAOYSA-N 1,1'-Oxybisoctane Chemical compound CCCCCCCCOCCCCCCCC NKJOXAZJBOMXID-UHFFFAOYSA-N 0.000 description 2
- BWPAALSUQKGDBR-UHFFFAOYSA-N 1-hexoxypropan-2-ol Chemical compound CCCCCCOCC(C)O BWPAALSUQKGDBR-UHFFFAOYSA-N 0.000 description 2
- UKALMWDUKSISLP-UHFFFAOYSA-N 2-(2-propylheptoxy)ethanol Chemical compound CCCCCC(CCC)COCCO UKALMWDUKSISLP-UHFFFAOYSA-N 0.000 description 2
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 2
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N isopropyl alcohol Natural products CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- RJFBVIODDXCPQF-UHFFFAOYSA-N 1-(2-propylheptoxy)propan-2-ol Chemical compound C(CC)C(COCC(C)O)CCCCC RJFBVIODDXCPQF-UHFFFAOYSA-N 0.000 description 1
- QXNPSEBOTQLKNZ-UHFFFAOYSA-N 1-cyclohexyloxypropan-2-ol Chemical compound CC(O)COC1CCCCC1 QXNPSEBOTQLKNZ-UHFFFAOYSA-N 0.000 description 1
- DEKZZBICBJGBCZ-UHFFFAOYSA-N 1-octoxypropan-2-ol Chemical compound CCCCCCCCOCC(C)O DEKZZBICBJGBCZ-UHFFFAOYSA-N 0.000 description 1
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 description 1
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- WMDZKDKPYCNCDZ-UHFFFAOYSA-N 2-(2-butoxypropoxy)propan-1-ol Chemical compound CCCCOC(C)COC(C)CO WMDZKDKPYCNCDZ-UHFFFAOYSA-N 0.000 description 1
- TTWHRLANJSQOAT-UHFFFAOYSA-N 2-(2-hexoxypropoxy)propan-1-ol Chemical compound CCCCCCOC(C)COC(C)CO TTWHRLANJSQOAT-UHFFFAOYSA-N 0.000 description 1
- NDSYZZUVPRGESW-UHFFFAOYSA-N 2-(2-octoxyethoxy)ethanol Chemical compound CCCCCCCCOCCOCCO NDSYZZUVPRGESW-UHFFFAOYSA-N 0.000 description 1
- KPZZRELRDDMRRI-UHFFFAOYSA-N 2-(2-octoxypropoxy)propan-1-ol Chemical compound CCCCCCCCOC(C)COC(C)CO KPZZRELRDDMRRI-UHFFFAOYSA-N 0.000 description 1
- ZUAURMBNZUCEAF-UHFFFAOYSA-N 2-(2-phenoxyethoxy)ethanol Chemical compound OCCOCCOC1=CC=CC=C1 ZUAURMBNZUCEAF-UHFFFAOYSA-N 0.000 description 1
- LCVQGUBLIVKPAI-UHFFFAOYSA-N 2-(2-phenoxypropoxy)propan-1-ol Chemical compound OCC(C)OCC(C)OC1=CC=CC=C1 LCVQGUBLIVKPAI-UHFFFAOYSA-N 0.000 description 1
- COBPKKZHLDDMTB-UHFFFAOYSA-N 2-[2-(2-butoxyethoxy)ethoxy]ethanol Chemical compound CCCCOCCOCCOCCO COBPKKZHLDDMTB-UHFFFAOYSA-N 0.000 description 1
- JDSQBDGCMUXRBM-UHFFFAOYSA-N 2-[2-(2-butoxypropoxy)propoxy]propan-1-ol Chemical compound CCCCOC(C)COC(C)COC(C)CO JDSQBDGCMUXRBM-UHFFFAOYSA-N 0.000 description 1
- RQTHKSDXOLOVMS-UHFFFAOYSA-N 2-[2-(2-cyclohexyloxyethoxy)ethoxy]ethanol Chemical compound OCCOCCOCCOC1CCCCC1 RQTHKSDXOLOVMS-UHFFFAOYSA-N 0.000 description 1
- JKJRAMLYRLVDGQ-UHFFFAOYSA-N 2-[2-(2-cyclohexyloxypropoxy)propoxy]propan-1-ol Chemical compound OCC(C)OCC(C)OCC(C)OC1CCCCC1 JKJRAMLYRLVDGQ-UHFFFAOYSA-N 0.000 description 1
- OADIZUFHUPTFAG-UHFFFAOYSA-N 2-[2-(2-ethylhexoxy)ethoxy]ethanol Chemical compound CCCCC(CC)COCCOCCO OADIZUFHUPTFAG-UHFFFAOYSA-N 0.000 description 1
- RGICCULPCWNRAB-UHFFFAOYSA-N 2-[2-(2-hexoxyethoxy)ethoxy]ethanol Chemical compound CCCCCCOCCOCCOCCO RGICCULPCWNRAB-UHFFFAOYSA-N 0.000 description 1
- ORUVRNUPHYNSLY-UHFFFAOYSA-N 2-[2-(2-hexoxypropoxy)propoxy]propan-1-ol Chemical compound CCCCCCOC(C)COC(C)COC(C)CO ORUVRNUPHYNSLY-UHFFFAOYSA-N 0.000 description 1
- XIVLVYLYOMHUGB-UHFFFAOYSA-N 2-[2-(2-octoxyethoxy)ethoxy]ethanol Chemical compound CCCCCCCCOCCOCCOCCO XIVLVYLYOMHUGB-UHFFFAOYSA-N 0.000 description 1
- PROIKEUUMJWBQU-UHFFFAOYSA-N 2-[2-(2-octoxypropoxy)propoxy]propan-1-ol Chemical compound CCCCCCCCOC(C)COC(C)COC(C)CO PROIKEUUMJWBQU-UHFFFAOYSA-N 0.000 description 1
- XJCPAFGVHHFBSW-UHFFFAOYSA-N 2-[2-(2-phenoxypropoxy)propoxy]propan-1-ol Chemical compound OCC(C)OCC(C)OCC(C)OC1=CC=CC=C1 XJCPAFGVHHFBSW-UHFFFAOYSA-N 0.000 description 1
- GSKKPNMVOYDARW-UHFFFAOYSA-N 2-[2-[2-(2-ethylhexoxy)ethoxy]ethoxy]ethanol Chemical compound CCCCC(CC)COCCOCCOCCO GSKKPNMVOYDARW-UHFFFAOYSA-N 0.000 description 1
- WRPJHNGOFNEDHO-UHFFFAOYSA-N 2-[2-[2-(2-propylheptoxy)propoxy]propoxy]propan-1-ol Chemical compound C(CC)C(COC(C)COC(C)COC(C)CO)CCCCC WRPJHNGOFNEDHO-UHFFFAOYSA-N 0.000 description 1
- RFHPMEOKJKCEFR-UHFFFAOYSA-N 2-cyclohexyloxyethanol Chemical compound OCCOC1CCCCC1 RFHPMEOKJKCEFR-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- ZQCIMPBZCZUDJM-UHFFFAOYSA-N 2-octoxyethanol Chemical compound CCCCCCCCOCCO ZQCIMPBZCZUDJM-UHFFFAOYSA-N 0.000 description 1
- QCDWFXQBSFUVSP-UHFFFAOYSA-N 2-phenoxyethanol Chemical compound OCCOC1=CC=CC=C1 QCDWFXQBSFUVSP-UHFFFAOYSA-N 0.000 description 1
- LONFHGYOPIELIZ-UHFFFAOYSA-N C(C)C(COC(C)COC(C)CO)CCCC Chemical compound C(C)C(COC(C)COC(C)CO)CCCC LONFHGYOPIELIZ-UHFFFAOYSA-N 0.000 description 1
- JILPOYZLLZCWGZ-UHFFFAOYSA-N C(C)C(COC(C)COC(C)COC(C)CO)CCCC Chemical compound C(C)C(COC(C)COC(C)COC(C)CO)CCCC JILPOYZLLZCWGZ-UHFFFAOYSA-N 0.000 description 1
- QZTXZQIFZTVMHI-UHFFFAOYSA-N C(CC)C(COCCOCCOCCO)CCCCC Chemical compound C(CC)C(COCCOCCOCCO)CCCCC QZTXZQIFZTVMHI-UHFFFAOYSA-N 0.000 description 1
- OZUWSRFNGJBPGZ-UHFFFAOYSA-N CC(=C)CCC.C(COCCO)O Chemical compound CC(=C)CCC.C(COCCO)O OZUWSRFNGJBPGZ-UHFFFAOYSA-N 0.000 description 1
- 238000010794 Cyclic Steam Stimulation Methods 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- DUFKCOQISQKSAV-UHFFFAOYSA-N Polypropylene glycol (m w 1,200-3,000) Chemical group CC(O)COC(C)CO DUFKCOQISQKSAV-UHFFFAOYSA-N 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000010797 Vapor Assisted Petroleum Extraction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
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- 239000012141 concentrate Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
- C10G1/045—Separation of insoluble materials
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
-
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Abstract
本发明涉及一种从油砂中回收沥青的工艺。所述油砂可以在地表开采并输送到处理区域,或可以通过对位置太深而不能露天开采的油砂沉积物进行原地加工来直接处理。具体地,本发明涉及用包含链烷醇胺和环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚的组合物处理油砂的步骤。
Description
技术领域
本发明涉及从油砂中回收沥青。更确切地说,本发明是一种通过地表采矿或原地回收来从油砂中回收沥青的改进方法。此改进是使用包含链烷醇胺和环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚作为沥青回收工艺中使用的水和/或蒸汽中的提取助剂。
背景技术
世界各地都有油砂矿床,但最突出的是加拿大(Canada)、委内瑞拉(Venezuela)以及美国(United States)。这类油砂含有大量重油沉积物,通常称为沥青。来自这类油砂的沥青可以被提取并精炼成合成油或直接精炼成石油产品。沥青的困难在于其通常非常粘稠,有时与其说其是液体不如说是固体。因此,沥青通常不会像粘度较低或轻质原油那样流动。
由于沥青的粘性性质,因此其不能像轻质原油那样从钻入油砂的井中产生。这是因为,在没有首先经加热、稀释和/或升级的情况下沥青不会流动。由于正常的石油钻井实践不足以产生沥青,因此几十年来已经发展出几种方法来提取和加工油砂以去除沥青。对于油砂的浅层沉积物,典型的方法包括地表提取或采矿,随后处理油砂以去除沥青。
地表提取工艺的发展最广泛地出现在加拿大的阿萨巴斯卡(Athabasca)油田。在这类工艺中,通常通过利用拉铲挖掘机、斗轮挖掘机以及最近的铲运操作进行露天采矿(strip mining/open pit mining)来开采油砂。然后将油砂输送到设施中进行加工并从砂中去除沥青。这类工艺通常涉及某种类型的溶剂,最常用的是水或蒸汽,尽管已经使用了其它溶剂,如烃溶剂。
在挖掘之后,在阿萨巴斯卡油田中通常使用热水提取工艺,其中油砂与水在约35℃至75℃范围内的温度下混合,最近的改进使所需温度降低到所述范围的下部。可将提取剂如氢氧化钠(NaOH)、表面活性剂和/或空气与油砂混合。
向油砂中加入水来产生油砂浆料,可向其中添加如NaOH的添加剂,随后通常经由管道将其输送到提取设备。在分离容器内,搅动浆料且水和NaOH从油砂中释放沥青。夹带着水和NaOH的空气附着在沥青上,使沥青漂浮到浆料混合物的顶部并产生泡沫。进一步处理沥青泡沫以去除残留的水和细粒,其通常是小沙子和粘土颗粒。然后将沥青储存用于进一步处理或立即处理,化学处理或与轻质石油产品混合,并通过管道输送用于升级成合成原油。不幸的是,这种方法不能用于更深的焦油砂层。对于在井生产中回收深层油而言,原地技术是必需的。据估计,约80%的阿尔伯塔(Alberta)焦油砂和几乎所有的委内瑞拉焦油砂都处在地表下太深的位置而无法使用露天采矿。
在井生产(称为原地回收)中,蒸汽吞吐(Cyclic Steam Stimulation,CSS)是常规“吞吐”原地方法,其中将蒸汽在250℃至400℃的温度下注入井中。蒸汽上升并加热沥青,降低其粘度。使井静置数天或数周,且然后将混合有冷凝蒸汽的热油抽出,持续进行数周或数月的时间。然后重复所述过程。不幸的是,“吞吐”方法要求将场地关闭数周以使可泵送的油积聚。除了注入蒸汽的高成本之外,CSS方法通常得到20至25%的可用油回收率。
蒸汽辅助重力泄油(Steam Assisted Gravity Drainage,SAGD)是另一种原地方法,其中在焦油砂中钻两个水平井,一个位于地层底部且另一个位于其上方五米处。所述井从中心垫分组钻出。这些井可向各个方向延伸数英里。将蒸汽注入上部井中,从而使沥青熔化,沥青随后流入下部井中。随后将所得的混合有冷凝蒸汽的液体油泵送到地表。可用油的典型回收率为40%至60%。
上述方法存在许多与其相关的成本以及环境和安全问题。例如,使用大量蒸汽是能量密集型的并且需要处理并弃置大量的水。目前,焦油砂提取和加工每产一桶油需要数桶水。露天采矿和进一步处理产生未完全清洁的砂子,其在返回到环境中之前需要进一步加工。此外,在地表采矿中使用大量苛性碱不仅存在工艺安全危害而且还促使在尾矿中形成细小的粘土颗粒,其弃置是主要环境问题。
因此,仍然需要有效、安全且有成本效益的方法来改进从油砂中回收沥青。
发明内容
本发明是一种改进的沥青回收工艺,其包含用组合物处理油砂的步骤,所述组合物包含(i)链烷醇胺和(ii)二醇醚,其中所述处理是对通过地表采矿或原地生产地下储层中的油砂而回收的油砂进行处理。
在上文所述的沥青回收工艺的一个实施例中,本发明的链烷醇胺(i)由下式表示:
R1R2NR3OH I
其中R1为H,或1至4个碳的直链、支链或环状烷基,优选甲基或乙基;R2为H、-CH2CH2OH、-CH2CH(CH3)OH或1至4个碳的直链、支链或环状烷基,优选H、-CH2CH2OH、甲基或乙基;且R3为2至5个碳的直链或支链烷基,优选-CH2CH2-、-CH2CH2CH2-、-CH2CH(CH3)-。优选链烷醇胺是单乙醇胺、单异丙醇胺、N-甲基单乙醇胺、3-氨基-1-丙醇或其混合物。优选链烷醇胺以10至90重量%的量存在于组合物中。
并且,二醇醚(ii)选自:(a)由以下结构描述的环氧乙烷封端的二醇醚:
RO-(CH2CH(CH3)O)m(C2H4O)nH II
其中R为等于或大于4个碳的直链、支链、环状烷基,苯基或烷基苯基,优选正丁基、正戊基、2-甲基-1-戊基、正己基、正庚基、正辛基、2-乙基己基、2-丙基庚基、苯基或环己基;m等于0至3,优选1至2;且n为1至3,优选1或2;更优选m+n为2;优选乙烯封端的二醇醚为以下之一或其组合:环氧乙烷封端的丙二醇正丁基醚、环氧乙烷封端的丙二醇正己基醚、或环氧乙烷封端的丙二醇2-乙基己基醚和/或(b)环氧丙烷封端的二醇醚由以下结构描述:
RO-(C2H4O)o(CH2CH(CH3)O)pH. III
其中为等于或大于4个碳的直链、支链、环状烷基,苯基或烷基苯基,优选正丁基、正戊基、2-甲基-1-戊基、正己基、正庚基、正辛基、2-乙基己基、2-丙基庚基、苯基或环己基;o为0至3,优选1或2;且p为1至3,优选1或2;优选o+p为2;优选丙烯封端的二醇醚为以下之一或其组合:环氧丙烷封端的正丁基醚、环氧丙烷封端的乙二醇正丁基醚、环氧丙烷封端的正己基醚、环氧丙烷封端的乙二醇正己基醚、环氧丙烷封端的2-乙基己基醚、或环氧乙烷封端的乙二醇2-乙基己基醚;优选环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚以按链烷醇胺和环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚的组合重量计90至10重量%的量存在于组合物中。
在上文所述的沥青回收工艺的一个实施例中,链烷醇胺与二醇醚的重量比为50:50。
在本发明的另一实施例中,通过上文所述地表采矿的沥青回收工艺包含以下步骤:i)地表开采油砂;ii)制备油砂含水浆料;iii)用链烷醇胺和环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物处理含水浆料;iv)搅动处理过的含水浆料;v)将搅动后的处理过的含水浆料转移到分离槽中;以及vi)将沥青与含水部分分离,优选地,环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚以按油砂的重量计0.01至10重量%的量存在于含水浆料中。
在本发明的另一实施例,通过上文所述原地生产的沥青回收工艺包含以下步骤:i)通过将含有链烷醇胺和环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物的蒸汽注入井中来处理地下油砂储层;和ii)从井中回收沥青,优选地,蒸汽中的环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚的浓度为0.01至10重量%。
附图说明
图1是实例中使用的实验装置的示意图。
具体实施方式
通过但不限于以下两种方法来完成从油砂中分离沥青和/或重油:地表采矿或原地回收(有时称为井生产)。油砂可通过地表或露天采矿回收并输送到处理区域。可以在文章《了解阿萨巴斯卡油砂的基于水的沥青提取(Understanding Water-Based BitumenExtraction from Athabasca Oil Sands)》,J.Masliyah等,《加拿大化工杂志(CanadianJournal of Chemical Engineering)》第82卷,2004年八月中找到很好的总结。经由地表采矿回收沥青的基本步骤包括:提取、泡沫处理、尾矿处理和升级。所述步骤是相互关联的;采矿操作影响提取,且提取继而影响升级操作。
通常,在商业沥青回收操作中,在露天矿中使用卡车和铲开采油砂。将开采的油砂输送到处理区域。提取步骤包括:粉碎油砂块并将其在混合箱、搅拌槽、环式进料器或旋转破碎机中与水混合(再循环过程)以形成经调节的油砂浆料。将经调节的油砂浆料引入水力输送管道或转筒中,其中油砂块被剪切且尺寸减小。在转筒和/或水力输送管道内,从砂粒中回收或“释放”或“解放”沥青。在浆料制备阶段期间可添加化学添加剂;对于本领域已知的化学品的实例参见US 2008/0139418,其以全文引用的方式并入本文中。在典型的操作中,操作浆料温度在35℃至75℃,优选40℃至55℃范围内。
在滚筒和水力输送管道中,夹带或引入的空气附着在沥青上,产生泡沫。在泡沫处理步骤中,充气沥青漂浮并随后被从浆料中撇出。此步骤在大型重力分离容器中完成,通常称为初级分离容器(primary separation vessel,PSV)、分离池(Sep池)或初级分离池(primary separation cell,PSC)。使用引入的空气浮选在机械浮选池和尾矿油回收容器或环式分离器和水力旋流器中进一步回收浆液中剩余的少量沥青液滴(通常为未充气沥青)。一般来说,商业操作中的总沥青回收率是原地原始油的约88至95%。回收的呈泡沫形式的沥青通常含有60%的沥青、30%的水和10%的固体。
然后将如此回收的沥青泡沫脱气,并用溶剂稀释(混合)以提供水与沥青之间的足够的密度差并降低沥青粘度。通过溶剂(例如石脑油或己烷)的稀释有助于使用斜板沉降器、旋流器和/或离心机从沥青泡沫中去除固体和水。当以足够高的稀释剂与沥青之比使用链烷烃稀释剂(溶剂)时,沥青质发生部分沉淀。这导致形成复合聚集体,其将水和固体截留在稀释的沥青泡沫中。以这种方式,重力分离大大增强,可能无需旋流器或离心机。
在尾矿处理步骤中,来自提取设备的尾矿流进入尾矿池中进行固液分离。净化后的水从池中再循环到提取设备。为了加速尾矿处理,可向成熟的细尾矿中添加石膏,以将细粒与粗砂一起固结成非分离混合物。此方法称为固结(复合)尾矿(CT)工艺。CT以促进其进一步脱水和最终回收的土工方式弃置。任选地,对来自提取设备的尾矿进行旋流,其中将溢流(细尾矿)泵送到浓缩机中且将旋流底流(粗尾矿)泵送到尾矿池中。细尾矿用絮凝剂处理,然后增稠并泵送到尾矿池中。此外,使用糊剂技术(添加絮凝剂/聚电解质)或CT和糊剂技术的组合可用于快速释放水并将CT中的水再循环到提取设备以从油砂中回收沥青。
在最后步骤中,对回收的沥青进行升级。升级要么添加氢气,要么去除碳,以便获得更有价值且更易精炼的平衡轻质碳氢化合物。升级工艺还去除污染物,如重金属、盐、氧、氮和硫。升级工艺包括一个或多个步骤,如:蒸馏,其中多种化合物通过物理性质分离;焦化;加氢转化;提高氢与碳之比的溶剂脱沥青;以及去除污染物如硫的加氢处理。
在本发明的一个实施例中,对从油砂中回收沥青的工艺的改进是使含有沥青的油砂与组合物接触,所述组合物包含以下、基本上由以下组成或由以下组成:(i)链烷醇胺和(ii)二醇醚,优选环氧乙烷封端的二醇醚(ii)(a)和/或环氧丙烷封端的二醇醚(ii)(b)。
本发明的优选链烷醇胺(i)由下式表示:
R1R2NR3OH I
其中R1为H,或1至4个碳的直链、支链或环状烷基,优选甲基或乙基;R2为H、-CH2CH2OH、-CH2CH(CH3)OH或1至4个碳的直链、支链或环状烷基,优选H、-CH2CH2OH、-CH2CH(CH3)OH、甲基或乙基;且R3为2至5个碳的直链或支链烷基,优选-CH2CH2-,-CH2CH2CH2-,-CH2CH(CH3)-。优选链烷醇胺是单乙醇胺、单异丙醇胺、N-甲基单乙醇胺、3-氨基-1-丙醇或其混合物。
以链烷醇胺(i)和二醇醚(ii)的组合重量计,链烷醇胺(i)以以下量存在于本发明的组合物中:等于或大于10重量%,优选等于或大于20重量%、优选等于或大于30重量%、优选等于或大于40重量%、优选等于或大于50重量%。
以链烷醇胺(i)和二醇醚(ii)的组合重量计,链烷醇胺(i)以以下量存在于本发明的组合物中:等于或小于90重量%,优选等于或小于80重量%、优选等于或小于70重量%、优选等于或小于60重量%、优选等于或小于50重量%。
在本发明的一个实施例中,二醇醚是由下式表示的本发明的环氧乙烷封端的二醇醚(ii)(a):
RO-(CH2CH(CH3)O)m(C2H4O)nH II
其中R为等于或大于4个碳的直链、支链、环状烷基,苯基或烷基苯基,优选正丁基、正戊基、2-甲基-1-戊基、正己基、正庚基、正辛基、2-乙基己基、2-丙基庚基、苯基或环己基;
m为0至3,优选为1或2,
且
n独立地为1至3,优选为1或2,优选m+n为2。
在本发明的另一实施例中,二醇醚是由下式表示的本发明的环氧丙烷封端的二醇醚(ii)(b):
RO-(C2H4O)o(CH2CH(CH3)O)pH. III
其中为等于或大于4个碳的直链、支链、环状烷基,苯基或烷基苯基,优选正丁基、正戊基、2-甲基-1-戊基、正己基、正庚基、正辛基、2-乙基己基、2-丙基庚基、苯基或环己基;
o为0到3,优选1或2,
且
p为1至3,优选为1或2,优选m+n为2。
如下文所用,本发明的环氧乙烷封端的二醇醚意指环氧乙烷端包含1至3个环氧乙烷单元。优选的环氧乙烷封端的二醇醚为环氧乙烷封端的正丁醚、环氧乙烷封端的丙二醇正丁醚、环氧乙烷封端的二丙二醇正丁醚、环氧乙烷封端的三丙二醇正丁醚、环氧乙烷封端的正戊醚、环氧乙烷封端的丙二醇正戊醚、环氧乙烷封端的二丙二醇正戊醚、环氧乙烷封端的三丙二醇正戊醚、环氧乙烷封端的2-甲基-1-戊基醚、环氧乙烷封端的丙二醇2-甲基-1-戊基醚、环氧乙烷封端的二丙二醇2-甲基-1-戊基醚、环氧乙烷封端的三丙二醇2-甲基-1-戊基醚、环氧乙烷封端的正己醚、环氧乙烷封端的丙二醇正己醚、环氧乙烷封端的二丙二醇正己醚、环氧乙烷封端的三丙二醇正己醚、环氧乙烷封端的正庚醚、环氧乙烷封端的丙二醇正庚醚、环氧乙烷封端的二丙二醇正庚醚、环氧乙烷封端的三丙二醇正庚醚、环氧乙烷封端的正辛醚、环氧乙烷封端的丙二醇正辛醚、环氧乙烷封端的二丙二醇正辛醚、环氧乙烷封端的三丙二醇正辛醚、环氧乙烷封端的2-乙基己基醚、环氧乙烷封端的丙二醇2-乙基己基醚、环氧乙烷封端的二丙二醇2-乙基己基醚、环氧乙烷封端的三丙二醇2-乙基己基醚、环氧乙烷封端的2-丙基庚基醚、环氧乙烷封端的丙二醇2-丙基庚基醚、环氧乙烷封端的二丙二醇2-丙基庚基醚、环氧乙烷封端的三丙二醇2-丙基庚基醚、环氧乙烷封端的苯基醚、环氧乙烷封端的丙二醇苯基醚、环氧乙烷封端的二丙二醇苯基醚、环氧乙烷封端的三丙二醇苯基醚、环氧乙烷封端的环己基醚、环氧乙烷封端的丙二醇环己基醚、环氧乙烷封端的二丙二醇环己基醚、环氧乙烷封端的三丙二醇环己基醚或其混合物。
如下文所用,本发明的环氧丙烷封端的二醇醚意指环氧丙烷端包含1至3个[2}环氧乙烷{3]单元。优选的环氧丙烷封端的二醇醚为环氧丙烷封端的正丁醚、环氧丙烷封端的乙二醇正丁醚、环氧丙烷封端的二乙二醇正丁醚、环氧丙烷封端的三乙二醇正丁醚、环氧丙烷封端的正戊醚、环氧丙烷封端的乙二醇正戊醚、环氧丙烷封端的二乙二醇正戊醚、环氧丙烷封端的三乙二醇正戊醚、环氧丙烷封端的2-甲基-1-戊基醚、环氧丙烷封端的乙二醇2-甲基-1-戊基醚、环氧丙烷封端的二乙二醇2-甲基-1-戊基醚、环氧丙烷封端的三乙二醇2-甲基-1-戊基醚、环氧丙烷封端的正己醚、环氧丙烷封端的乙二醇正己醚、环氧丙烷封端的二乙二醇正己醚、环氧丙烷封端的三乙二醇正己醚、环氧丙烷封端的正庚醚、环氧丙烷封端的乙二醇正庚醚、环氧丙烷封端的二乙二醇正庚醚、环氧丙烷封端的三乙二醇正庚醚、环氧丙烷封端的正辛醚、环氧丙烷封端的乙二醇正辛醚、环氧丙烷封端的二乙二醇正辛醚、环氧丙烷封端的三乙二醇正辛醚、环氧丙烷封端的2-乙基己基醚、环氧丙烷封端的乙二醇2-乙基己基醚、环氧丙烷封端的二乙二醇2-乙基己基醚、环氧丙烷封端的三乙二醇2-乙基己基醚、环氧丙烷封端的2-丙基庚基醚、环氧丙烷封端的乙二醇2-丙基庚基醚、环氧丙烷封端的二乙二醇2-丙基庚基醚、环氧丙烷封端的三乙二醇2-丙基庚基醚、环氧丙烷封端的苯基醚、环氧丙烷封端的乙二醇苯基醚、环氧丙烷封端的二乙二醇苯基醚、环氧丙烷封端的三乙二醇苯基醚、环氧丙烷封端的环己基醚、环氧丙烷封端的乙二醇环己基醚、环氧丙烷封端的二乙二醇环己基醚、环氧丙烷封端的三乙二醇环己基醚或其混合物。
以链烷醇胺(i)和二醇醚(ii)的组合重量计,二醇醚(ii)以以下量存在于本发明的组合物中:等于或小于90重量%,优选等于或小于80重量%、优选等于或小于70重量%、优选等于或小于60重量%、优选等于或小于50重量%。
以链烷醇胺(i)和二醇醚(ii)的组合重量计,二醇醚(ii)以以下量存在于本发明的组合物中:等于或大于10重量%,优选等于或大于20重量%、优选等于或大于30重量%、优选等于或大于40重量%、优选等于或大于50重量%。
在本发明的一个实施例中,链烷醇胺与二醇醚重量之比为50:50。
通常将链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚溶液/油砂浆料搅动5分钟至4小时,优选一小时或更短。优选地,将链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚溶液油砂浆料加热至等于或高于35℃,更优选等于或高于40℃,更优选等于或高于55℃,更优选等于或高于60℃。优选地,将链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚溶液油砂浆料加热至等于或低于100℃,更优选等于或低于80℃,且更优选等于或低于75℃。
如上文所概述,可将经链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚处理的浆料转移到通常包含稀释的清洁剂溶液的分离槽中,其中从含水部分中分离沥青和重油。可进一步处理固体和含水部分以去除任何额外的游离有机物质。
在本发明的另一实施例中,通过井生产从油砂中回收沥青,其中可通过对位置太深而不能露天开采的油砂沉积物进行原地处理来将如上文所述的链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物加入油砂中。原地生产回收的两种最常用的方法是蒸汽吞吐(CSS)和蒸汽辅助重力泄油(SAGD)。CSS可以利用垂直井和水平井两者,所述井交替地注入蒸汽并且将加热的沥青泵送到地表,形成注入、加热、流动和提取的循环。SAGD利用成对的水平井,在沥青产油区内将一个井置于另一个井上方。上部井用于注入蒸汽,产生永久加热室,在所述永久加热室内加热的沥青通过重力流入提取沥青的下部井中。然而,新的技术,如蒸气回收提取(vapor recovery extraction,VAPEX)和出砂冷采(coldheavy oil production with sand,CHOPS)正处于开发中。
在本发明的一个实施例中,对从油砂中回收沥青的工艺的改进是在浆料制备阶段期间加入链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物。将浆化材料在搅动下加入浆料槽中,并与链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物组合。可以纯净形式,或以按链烷醇胺/环氧乙烷封端的二醇醚组合物溶液的总重量计,环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚的浓度为0.01至10重量%的水溶液形式,将链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物加入油砂浆料中。优选地,环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚以按油砂的重量计0.01至10重量%的量存在于含水油砂浆料中。
从油砂中回收沥青的原地处理的基本步骤包括:蒸汽注入井中;从井中回收沥青;以及例如用冷凝物稀释回收的沥青,以通过管道运送。
根据此方法,链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物在地下油砂储层的沥青回收过程中用作蒸汽添加剂。在单井或多井计划中,蒸汽注入的模式可以包括蒸汽驱动、蒸汽浸渍或周期蒸汽注入中的一个或多个。除了上文列出的蒸汽注入方法中的一种或多种之外,还可以使用水驱法。
通常,蒸汽通过注入井注入油砂储层中,并且其中包含储层和注入流体的地层流体通过相邻生产井或通过反流回注入井来生产。
在大多数油砂储层中,需要至少180℃(其对应于150psi(1.0MPa)的压力)或更高的蒸汽温度,以移动沥青。优选地,在150℃至300℃、优选180℃至260℃范围内的温度下,将链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物-蒸汽注入流引入储层中。在本发明的工艺中使用的特定蒸汽温度和压力将取决于特定储层特性,如深度、覆盖地层压力、产油区厚度和沥青粘度,且因此将针对每个储层进行制定。
优选将链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物与蒸汽同时注入,以便确保或最大化实际随蒸汽移动的环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚的量。在某些情况下,可能需要在蒸汽-链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物注入流之前或之后注入仅蒸汽的注入流。在这种情况下,在仅蒸汽注入期间蒸汽温度可以上升至高于260℃。本文所用术语“蒸汽”意指包括过热蒸汽、饱和蒸汽和小于100%品质的蒸汽。
为清楚起见,术语“小于100%品质的蒸汽”是指存在液体水相的蒸汽。蒸汽品质定义为蒸汽-液体混合物的单位重量中含有的干蒸汽的重量百分比。“饱和蒸汽”与“100%品质的蒸汽”同义使用。“过热蒸汽”是已经加热至高于蒸气-液体平衡点的蒸汽。如果使用过热蒸汽,则在加入链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物之前,优选使蒸汽过热至高于蒸气-液体平衡温度5至50℃之间。
链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物可以纯净形式或作为浓缩物加入蒸汽中。如果以浓缩物形式加入,则其可以1至99重量%水溶液形式加入。优选地,链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物显著挥发并作为气溶胶或雾气进入储层中。同样,基本原理是使随蒸汽一起进入储层的链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚的量最大化。
优选地,链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物间歇或连续地与蒸汽一起注入,使得蒸汽-链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物注入流通过普通管道到达井下地层。调节链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物加入的速率,以便维持优选环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚在蒸汽中的浓度为0.01至10重量%。用于典型油砂储层的蒸汽注入速率可为1至3英尺/天,使得大约有足够的蒸汽来通过地层提供推进。
有效的SAGD添加剂必须满足许多要求才能被认为是成功的。成功的添加剂的主要标准是添加剂随蒸汽一起移动并到达储油层中未被回收的原地沥青、有利地与水/沥青/岩石相互作用以增强沥青回收、且不会不利地干扰现有操作的能力。在这三者中,添加剂在SAGD操作温度下蒸发且随蒸汽一起移动的要求限制了SAGD技术中不同化学品的选择和考虑。例如,许多高分子量表面活性剂即使已知为有助于提高油回收率,但仍不被认为是SAGD添加剂,这是由于其因沸点高而无法与蒸汽一起移动。然而,许多沸点高于水的沸点的环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚是例外。相平衡研究已表明,与液(即水)相相比,这类材料在蒸气(即蒸汽)中的分配是有利的。在蒸气中分配更多的独特能力来自多种环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚尤其是以低浓度存在时形成水-添加剂共沸物的能力,且因此包括本实施例中提到的那些在内的许多环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚均能够随蒸汽一起移动。
实例
对于实例1至12,将合成油砂芯悬浮在压力容器的盖子上,图1。芯的直径为1.5英寸且高度为6英寸,在中心处具有直径为0.5英寸的冷凝管(coldfinger)。合成芯的孔隙率为32至34%,并且水饱和度为15至18孔体积%。每种合成芯含有约36至40g沥青。将400mL包含链烷醇胺和/或二醇醚的溶液装载在容器的底部。在表1中,丁基CELLOSOLVETM是由式II表示的二醇醚,其中R为丁基,m=0,且n=1,并且可购自陶氏化学公司(The Dow ChemicalCompany)。将玻璃杯置于合成芯下面以收集沥青和冷凝水。将容器在225℃加热3小时。在整个实验中,水流过冷凝管。通过将沥青提取到甲苯中并在真空烘箱中蒸发所述甲苯来测量提取的沥青和残留在合成芯中的沥青的量。表1总结利用各种添加剂溶液的沥青的回收率%。
表1
实例 | 添加剂 | 回收率 |
1* | 基线(无链烷醇胺和/或二醇醚) | 52% |
2* | 2000ppm丁基CELLOSOLVE | 54% |
3* | 2000ppm 3-氨基-1-丙醇 | 46% |
4 | 1000ppm 3-氨基-1-丙醇+1000ppm丁基CELLOSOLVE | 63% |
5 | 500ppm 3-氨基-1-丙醇+1500ppm丁基CELLOSOLVE | 59% |
6* | 2000ppm单异丙醇 | 54% |
7 | 1000ppm单异丙醇+1000ppm丁基CELLOSOLVE | 59% |
8 | 1000ppm单乙醇胺+1000ppm丁基CELLOSOLVE | 61% |
9* | 2000ppm N-甲基单乙醇胺 | 48% |
10 | 1000ppm N-甲基单乙醇胺+1000ppm丁基CELLOSOLVE | 68% |
11* | 2000ppm N,N-二乙基单乙醇胺 | 58% |
12 | 1000ppm N,N-二乙基单乙醇胺+1000ppm丁基CELLOSOLVE | 57% |
*不是本发明实施例。
Claims (9)
1.一种回收沥青的方法,其包含使油砂与包含链烷醇胺和二醇醚的组合物接触的步骤,其中所述链烷醇胺/二醇醚组合物包含:
(i)由以下结构描述的链烷醇胺:
R1R2N-R3OH
其中R1为H,或1至4个碳的直链、支链或环状烷基;
R2为H、-CH2CH2OH或1至4个碳的直链、支链或环状烷基;
且
R3为2至5个碳的直链或支链烷基
以及
(ii)选自以下的一种或多种二醇醚:
(a)由以下结构所描述的环氧乙烷封端的二醇醚:
RO-(CH2CH(CH3)O)m(C2H4O)n H
其中R为等于或大于4个碳的直链、支链、环状烷基,苯基或烷基苯基;
m为0至3;
且
n为1至3;
和
(b)由以下结构所描述的环氧丙烷封端的二醇醚:
RO-(C2H4O)o(CH2CH(CH3)O)p H
其中R为等于或大于4个碳的直链、支链、环状烷基,苯基或烷基苯基;
o为0至3;
且
p为1至3,
其中处理是通过地表采矿或原地生产回收油砂。
2.根据权利要求1所述的方法,其包含以下步骤:
i)地表开采油砂;
ii)制备所述油砂的含水浆料;
iii)用链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物处理所述含水浆料;
iv)搅动处理过的含水浆料;
v)将搅动后的处理过的含水浆料转移到分离槽中;
以及
vi)从含水部分中分离所述沥青。
3.根据权利要求2所述的方法,其中所述环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚以按所述油砂的重量计0.01至10重量%的量存在于所述含水浆料中。
4.根据权利要求1所述的方法,其利用原地生产,所述方法包含以下步骤:
i)通过将含有链烷醇胺/环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚组合物的蒸汽注入井中来处理地下油砂储层;
以及
ii)从所述井中回收所述沥青。
5.根据权利要求1所述的方法,其中链烷醇胺(i)与环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚(ii)之比为10:90至90:10。
6.根据权利要求4所述的方法,其中在所述蒸汽中所述环氧乙烷封端的二醇醚和/或环氧丙烷封端的二醇醚的浓度为0.01至10重量%的量。
7.根据权利要求1所述的方法,其中所述链烷醇胺是单乙醇胺、单异丙醇胺、N-甲基单乙醇胺、3-氨基-1-丙醇或其混合物。
8.根据权利要求1所述的方法,其中所述环氧乙烷封端的二醇醚为环氧乙烷封端的正丁醚、环氧乙烷封端的丙二醇正丁醚、环氧乙烷封端的正己醚、环氧乙烷封端的丙二醇正己醚、环氧乙烷封端的2-乙基己基醚或环氧乙烷封端的丙二醇2-乙基己基醚。
9.根据权利要求1所述的方法,其中所述环氧丙烷封端的二醇醚为环氧丙烷封端的正丁醚、环氧丙烷封端的乙二醇正丁醚、环氧丙烷封端的正己醚、环氧丙烷封端的乙二醇正己醚、环氧丙烷封端的2-乙基己基醚或环氧丙烷封端的乙二醇2-乙基己基醚。
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