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:
Jun. 10, 2008
Filed:
Jun. 11, 2002
Pierre Maroy, Saint-Galmier, FR;
Arnaud Cadix, Paris, FR;
Dominique Hourdet, Paris, FR;
Ilias Iliopoulos, Paris, FR;
Françoise Lafuma, Paris, FR;
Pierre Maroy, Saint-Galmier, FR;
Arnaud Cadix, Paris, FR;
Dominique Hourdet, Paris, FR;
Ilias Iliopoulos, Paris, FR;
Françoise Lafuma, Paris, FR;
Schlumberger Technology Corporation, Sugarland, TX (US);
Abstract
Water-based fluids that can viscosify under shear or can produce a gel or form a gel under shear are obtained by dissolving polymers in an aqueous phase. These polymers comprise three types of functional groups: non-ionic functional groups that are hydrosoluble at the temperature under consideration, ionic functional groups, and functional groups that are hydrophobic at the temperature under consideration. These three types of functional groups can be distributed or spread in a random distribution along the polymer chain. A slightly block distribution is acceptable. For applications to oil wells, functional groups are used which exhibit LCST (Lower Critical Solution Temperature) behavior (i.e., a low critical solution temperature) instead of hydrophobic functional groups. At temperatures below the LCST, the functional groups are hydrophobic.