EP 0269231 A1 19880601 - Recovery of heavy oil.
Title (en)
Recovery of heavy oil.
Title (de)
Gewinnung von Schweröl.
Title (fr)
Récupération d'huile lourde.
Publication
Application
Priority
GB 8625933 A 19861030
Abstract (en)
A two stage method for the recovery of heavy crude oil or bitumen associated with a solid inorganic substance and water from an underground deposit comprises chemically conditioning the deposit in situ with an aqueous solution of an alkaline compound and subsequently treating the conditioned deposit to recover the heavy crude oil or bitumen from it. The method is particularly suitable for recovering bitumen from tar sand. In situ conditioning increases the yield of product.
IPC 1-7
IPC 8 full level
C10C 3/00 (2006.01); C10G 1/00 (2006.01); C10G 1/04 (2006.01)
CPC (source: EP)
C10C 3/007 (2013.01); C10G 1/00 (2013.01); C10G 1/04 (2013.01)
Citation (search report)
- US 4409091 A 19831011 - KESSICK MICHAEL A [CA]
- US 4549935 A 19851029 - TCHERNYAK SHIMON S [CA]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0269231 A1 19880601; CA 1300000 C 19920505; GB 8625933 D0 19861203
DOCDB simple family (application)
EP 87308937 A 19871008; CA 550500 A 19871028; GB 8625933 A 19861030