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:
Jul. 12, 2005
Filed:
Feb. 10, 2004
Kevin W. England, Houston, TX (US);
J. Ernest Brown, Katy, TX (US);
Jerald J. Hinkel, Houston, TX (US);
Ramchandra M. Reddy, Houston, TX (US);
Kevin W. England, Houston, TX (US);
J. Ernest Brown, Katy, TX (US);
Jerald J. Hinkel, Houston, TX (US);
Ramchandra M. Reddy, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen or air. Preferably, the surfactant has the formulaR—NH—(CH)—C(O)OXwherein R is a saturated or unsaturated alkyl group having from 6-20 carbon atoms, n is from 2-6, and X is hydrogen or a salt forming cation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile