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:
Sep. 23, 2008
Filed:
Dec. 20, 2002
Applicants:
Isabelle Couillet, Cambridge, GB;
Trevor Hughes, Cambridge, GB;
Inventors:
Isabelle Couillet, Cambridge, GB;
Trevor Hughes, Cambridge, GB;
Assignee:
Schlumberger Technology Corporation, Ridgefield, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention concerns an aqueous viscoelastic fracturing fluid for use in the recovery of hydrocarbons. According to the invention, the fluid comprises a viscoelastic surfactant and a hydrophobically-modified polymer wherein the concentration of the hydrophobically-modified polymer is comprised between its overlap concentration c* and its entanglement concentration c.