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1. (WO2001033040) METHOD OF MICROBIAL ENHANCED OIL RECOVERY
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/033040 International Application No.: PCT/GB2000/004239
Publication Date: 10.05.2001 International Filing Date: 03.11.2000
Chapter 2 Demand Filed: 31.05.2001
IPC:
C09K 8/90 (2006.01) ,E21B 43/20 (2006.01)
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
60
Compositions for stimulating production by acting on the underground formation
84
Compositions based on water or polar solvents
86
containing organic compounds
88
macromolecular compounds
90
of natural origin, e.g. polysaccharides, cellulose
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
16
Enhanced recovery methods for obtaining hydrocarbons
20
Displacing by water
Applicants:
SUNDE, Egil [NO/NO]; NO
TORSVIK, Terje [NO/NO]; NO
STATOIL ASA [NO/NO]; N-4035 Stavanger, NO (AllExceptUS)
REES, David, Christopher [GB/GB]; GB (IS)
Inventors:
SUNDE, Egil; NO
TORSVIK, Terje; NO
Agent:
REES, David, Christopher ; Kilburn & Strode 20 Red Lion Street London WC1R 4PJ, GB
Priority Data:
9926157.004.11.1999GB
Title (EN) METHOD OF MICROBIAL ENHANCED OIL RECOVERY
(FR) EXTENSION D'UN PROCEDE MICROBIEN DE RECUPERATION DU PETROLE
Abstract:
(EN) A method of microbial enhanced oil recovery for recovering oil from an oil-bearing rock formation (13). The method comprises: injecting water containing a source of vitamins, phosphates and an electron acceptor such as nitrate into the formation at first location (10) and allowing anaerobic bacteria, which are either already present in the formation (13) or which are introduced simultaneously to multiply using the oil as their main carbon source. This establishes a biomass layer (16) which acts to dissociate the oil from the rock formation (13). The dissociated oil is removed via an outlet (15).
(FR) L'invention concerne un procédé renforcé de récupération des hydrocarbures à l'aide de micro-organismes permettant de récupérer du pétrole dans une formation rocheuse pétrolifère (13). Ce procédé consiste à injecter en un premier point (10) de la formation de l'eau contenant une source de vitamines, des phosphates et un électroaccepteur, tel que le nitrate et à laisser des bactéries anaérobies déjà présentes dans la formation (13) ou introduites simultanément se multiplier en utilisant l'hydrocarbure comme source principale de carbone. On crée ainsi une couche de biomasse (16) qui dissocie de la formation rocheuse (13) l'hydrocarbure, l'hydrocarbure étant soutiré via un orifice de sortie (15).
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)