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:
May. 07, 2013
Filed:
Dec. 11, 2008
Bruno Drochon, Cambridge, GB;
Simon James, Le Plessis-Robinson, FR;
Sylvaine Le Roy-delage, Paris, FR;
Clara Carelli, Paris, FR;
Bruno Drochon, Cambridge, GB;
Simon James, Le Plessis-Robinson, FR;
Sylvaine Le Roy-Delage, Paris, FR;
Clara Carelli, Paris, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Compositions containing an alkali swelling polymer and a pH buffer with a pH between 3 and 7 may be used to treat a wellbore. The pH buffer prevents the swelling of the alkali swellable polymer. The compositions may be placed in the wellbore, whereupon they contact another material with pH increasing properties. The pH of the compositions increases, causing the compositions to swell and form a seal. The alkali swelling polymer may be an alkali swelling latex.