The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2009
Filed:
Aug. 20, 2007
Stephen Davies, Doha, QA;
Trevor Hughes, Cambridge, GB;
Henk Lekkerkerker, Maarn, NL;
Michel Van Bruggen, Helmond, NL;
Arnaud Van Der Beken, Brussels, BE;
Stephen Davies, Doha, QA;
Trevor Hughes, Cambridge, GB;
Henk Lekkerkerker, Maarn, NL;
Michel Van Bruggen, Helmond, NL;
Arnaud Van Der Beken, Brussels, BE;
Schlumberger Technology Corporation, Ridgefield, CT (US);
Abstract
The invention concerns an aqueous delayed-gelation solution for use in hydrocarbon wells. 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.