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:
Aug. 02, 2011
Filed:
Sep. 25, 2008
Kay Louise Robinson, Milton, GB;
Maria Violante DE Paz Banez, Seville, ES;
Gary John Tustin, Sawston, GB;
Timothy Gareth John Jones, Cottenham, GB;
Kay Louise Robinson, Milton, GB;
Maria Violante De Paz Banez, Seville, ES;
Gary John Tustin, Sawston, GB;
Timothy Gareth John Jones, Cottenham, GB;
Schlumberger Technology Corporation, Cambridge, MA (US);
Abstract
A subterranean location accessed via a wellbore is treated with an oilfield fluid containing a viscosifying agent which is a polymer and a cross-linking agent which can undergo the Diels-Alder reaction to form a gel. Conditions at the subterranean location alter fluid viscosity by bringing about the Diels-Alder reaction to increase viscosity or the retro Diels-Alder reaction to decrease the viscosity of the gel.