EP 2009231 A1 20081231 - Method of producing crude oil
Title (en)
Method of producing crude oil
Title (de)
Verfahren zur Produktion von Rohöl
Title (fr)
Procédé de production de pétrole brut
Publication
Application
Priority
EP 07111358 A 20070629
Abstract (en)
A method of producing crude oil, comprising: a) drilling a well (1) traversing a crude oil containing formation (2); b) creating a cavity (8) in the vicinity of the well; c) creating a flow channel (3A,3B) between the cavity and the well; d) inducing crude oil (20) to flow from the crude oil containing formation into the cavern the flow channel a section of the well, which is equipped with a valve (13); e) closing the valve when a substantial portion of the cavity is filled with crude oil; f) injecting water into the cavity, thereby inducing crude oil to flow from the cavity via the flow channel and the well to a wellhead (15) at the earth surface; g) interrupting water injection into the cavity when a substantial portion of the cavity is filled with water; h) pumping water from the cavity and filling at least a substantial portion of the cavity with a gaseous fluid; i) opening the valve and repeating steps d)-h). The method may make use of a one way valve (13) nitrogen and a salt layer (4).
IPC 8 full level
E21B 43/14 (2006.01); E21B 43/16 (2006.01); E21B 43/20 (2006.01); E21B 43/38 (2006.01)
CPC (source: EP US)
E21B 43/14 (2013.01 - EP US); E21B 43/162 (2013.01 - EP); E21B 43/166 (2013.01 - EP); E21B 43/18 (2013.01 - EP); E21B 43/20 (2013.01 - EP); E21B 43/38 (2013.01 - EP US)
Citation (search report)
- [X] WO 03091133 A1 20031106 - CONOCOPHILLIPS CO [US]
- [A] EP 0517597 A1 19921209 - GEOSTOCK [FR]
- [A] GB 2384508 A 20030730 - HALLIBURTON ENERGY SERV INC [US]
- [A] US 4034812 A 19770712 - WIDMYER RICHARD H
- [A] US 4456065 A 19840626 - HEIM WERNER [CH], et al
- [A] WO 2005049964 A1 20050602 - CDX GAS LLC [US], et al
- [A] US 4016930 A 19770412 - ARNOLD JAMES F
- [A] US 3739851 A 19730619 - BEARD T
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07111358 A 20070629