EP 0830494 A1 19980325 - METHOD FOR DOWNHOLE CYCLONE SEPARATION
Title (en)
METHOD FOR DOWNHOLE CYCLONE SEPARATION
Title (de)
VERFAHREN ZUM ZYKLONEABSCHEIDEN IM BOHRLOCH
Title (fr)
PROCEDE DE CYCLONAGE DE FOND DE PUITS
Publication
Application
Priority
- CA 9500549 W 19950927
- US 47844095 A 19950607
Abstract (en)
[origin: WO9641065A1] A method of downhole cyclone separation that is less prone to problems associated with gas breakout. This method include the following steps. Firstly, placing a cyclone separator (12) downhole in an oil well (14) producing a mixed stream of oil, water and gas. The cyclone separator (12) includes a separation chamber (16) wherein liquids of differing densities are separated, at least one mixed liquids inlet (18) through which liquids pass into the separation chamber (16), a first outlet (20) for liquids of a first density range to pass from the separation chamber (16), and a second outlet (22) for liquids of a second density range to pass from the separation chamber (16). Secondly, connecting the first outlet (20) to a recovery conduit (24) extending to surface. Thirdly, connecting the second outlet (22) to a disposal conduit (26) extending to a selected disposal site. The method being characterized by the further step of, fourthly, connecting the at least one mixed liquids inlet (18) to a pump (28) and pumping a mixed stream of oil, water and gas into the separation chamber (16) of the cyclone separator (12). The mixed stream is separated into a recovery stream of oil with a reduced water content which flows out of the first outlet (20) and along the recovery conduit (24) to the surface and a disposal stream of mainly water which flows out of the second outlet (22) and along the disposal conduit (26) to the selected disposal site.
IPC 1-7
IPC 8 full level
E21B 43/38 (2006.01)
CPC (source: EP US)
E21B 43/385 (2013.01 - EP US)
Citation (search report)
See references of WO 9641065A1
Designated contracting state (EPC)
AT BE DE DK ES FR GB GR IE IT NL
DOCDB simple family (publication)
WO 9641065 A1 19961219; AT E191255 T1 20000415; AU 3515895 A 19961230; AU 712601 B2 19991111; DE 69516022 D1 20000504; DK 0830494 T3 20000904; EP 0830494 A1 19980325; EP 0830494 B1 20000329; NO 975724 D0 19971205; NO 975724 L 19980129
DOCDB simple family (application)
CA 9500549 W 19950927; AT 95931870 T 19950927; AU 3515895 A 19950927; DE 69516022 T 19950927; DK 95931870 T 19950927; EP 95931870 A 19950927; NO 975724 A 19971205