EP 0420751 B1 19930721 - PROCEDURE FOR PUMPING A GAS/LIQUID MIXTURE FROM AN OIL RECOVERY WELL AND DEVICE FOR CARRYING OUT SUCH METHOD
Title (en)
PROCEDURE FOR PUMPING A GAS/LIQUID MIXTURE FROM AN OIL RECOVERY WELL AND DEVICE FOR CARRYING OUT SUCH METHOD
Publication
Application
Priority
FR 8912759 A 19890929
Abstract (en)
[origin: US5173022A] The present invention relates to a process for pumping a two-phase gas/liquid mixture in an extraction well (11) whose initial gas percentage is greater than approximately 40% by volume, characterized in that it consists: in reducing the percentage of free gas to below 40% by the use of at least a first centrifugal separating module (3, 4); in cooling the drive motor by means of an annular flow of the mixture emerging from the first separating module (3, 4) around the motor (9), the proportion of gas in the said mixture having been brought down to below 40% in order to increase its heat capacity and its speed of passage around the motor; in reducing to below approximately 10% the percentage of gas by volume by the use of at least a second centrifugal separating module (14); in pumping the fluid thus obtained by means of a centrifugal pump (16) driven by the motor (9).
IPC 1-7
IPC 8 full level
E21B 43/38 (2006.01)
CPC (source: EP US)
E21B 43/38 (2013.01 - EP US); Y10S 415/901 (2013.01 - EP US); Y10S 415/902 (2013.01 - EP US); Y10S 415/903 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0420751 A1 19910403; EP 0420751 B1 19930721; BR 9004880 A 19910910; DE 69002296 D1 19930826; DE 69002296 T2 19940217; FR 2652610 A1 19910405; FR 2652610 B1 19920103; NO 300515 B1 19970609; NO 904242 D0 19900928; NO 904242 L 19910402; OA 09264 A 19920831; US 5173022 A 19921222
DOCDB simple family (application)
EP 90402660 A 19900927; BR 9004880 A 19900928; DE 69002296 T 19900927; FR 8912759 A 19890929; NO 904242 A 19900928; OA 59862 A 19900928; US 59137690 A 19901001