EP 1125037 A1 20010822 - PROCESS FOR SEQUENTIALLY APPLYING SAGD TO ADJACENT SECTIONS OF A PETROLEUM RESERVOIR
Title (en)
PROCESS FOR SEQUENTIALLY APPLYING SAGD TO ADJACENT SECTIONS OF A PETROLEUM RESERVOIR
Title (de)
VERFAHREN ZUR SEQUENTIELLEN ANWENDUNG VON SAGD AN BENACHBARTEN TEILEN EINES ERDÖLRESERVOIRES
Title (fr)
PROCEDE D'APPLICATION SEQUENTIELLE D'UN DRAINAGE PAR GRAVITE AU MOYEN DE LA VAPEUR A DES PARTIES ADJACENTES D'UN GISEMENT DE PETROLE
Publication
Application
Priority
- CA 9900996 W 19991026
- CA 2251157 A 19981026
Abstract (en)
[origin: WO0025002A1] Steam assisted gravity drainage ("SAGD") is practised in a first section of a reservoir containing heavy oil. When production becomes uneconomic, steam injection into the first section is terminated. Non-condensible gas is then injected into the section to pressurize it and production of residual oil and steam condensate is continued. Concurrently with pressurization, SAGD is practised in an adjacent reservoir section. As a result, some of the residual oil in the first section is recovered and steam loss from the second section to the first section is minimized.
IPC 1-7
IPC 8 full level
E21B 43/24 (2006.01)
CPC (source: EP)
E21B 43/2406 (2013.01); E21B 43/2408 (2013.01)
Citation (search report)
See references of WO 0025002A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0025002 A1 20000504; CA 2251157 A1 20000426; CA 2251157 C 20030527; EP 1125037 A1 20010822
DOCDB simple family (application)
CA 9900996 W 19991026; CA 2251157 A 19981026; EP 99952188 A 19991026