Title:
DELAYED-GELATION SOLUTION
Document Type and Number:
WIPO Patent Application WO2004020783
Kind Code:
A8
Abstract:
The invention concerns an aqueous delayed-gelation solution and a method of selectively placing a delayed-gelation solution in a hydrocarbon well. According to the invention, the aqueous delayed-gelation solution a dissolved metal salt which, in use, hydrolyses to form a gel, wherein the solution contains suspended inorganic particles and the method comprises the steps of - providing the aqueous delayed- gelation solution, and - injecting the solution into the hydrocarbon well, whereby the suspended inorganic particles reduce or block the flow of the delayed-gelation solution to relatively low permeability formation zones thereby selectively placing the solution in a relatively high permeability formation zone. Applications of the invention relate to the treatment of hydrocarbon wells.
Inventors:
DAVIES STEPHEN (US)
HUGHES TREVOR (GB)
LEKKERKERKER HENK (NL)
VAN BRUGGEN MICHEL (NL)
VAN DER BEKEN ARNAUD (BE)
HUGHES TREVOR (GB)
LEKKERKERKER HENK (NL)
VAN BRUGGEN MICHEL (NL)
VAN DER BEKEN ARNAUD (BE)
Application Number:
PCT/GB2003/003645
Publication Date:
May 13, 2004
Filing Date:
August 20, 2003
Export Citation:
Assignee:
SOFITECH NV (BE)
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER HOLDINGS (VG)
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER TECHNOLOGY BV (NL)
DAVIES STEPHEN (US)
HUGHES TREVOR (GB)
LEKKERKERKER HENK (NL)
VAN BRUGGEN MICHEL (NL)
VAN DER BEKEN ARNAUD (BE)
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER HOLDINGS (VG)
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER TECHNOLOGY BV (NL)
DAVIES STEPHEN (US)
HUGHES TREVOR (GB)
LEKKERKERKER HENK (NL)
VAN BRUGGEN MICHEL (NL)
VAN DER BEKEN ARNAUD (BE)
International Classes:
C09K8/504; (IPC1-7): E21B33/138; E21B43/02
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