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. 20, 2013
Filed:
Jul. 02, 2010
Larry W. Gatlin, San Antonio, TX (US);
Glen E. Walden, The Woodlands, TX (US);
Ernest Mcmillan, Kingwood, TX (US);
Richard A. Gatlin, Montgomery, TX (US);
Larry W. Gatlin, San Antonio, TX (US);
Glen E. Walden, The Woodlands, TX (US);
Ernest McMillan, Kingwood, TX (US);
Richard A. Gatlin, Montgomery, TX (US);
Conlen Surfactant Technology, Inc., Conroe, TX (US);
Abstract
A composition useful for crosslinking phosphate esters in hydrocarbon gels used in formation fracturing performs especially well in cold temperatures, such as temperatures lower than (−)20° C. Methods of making the crosslinking composition and the gel are described; also methods of fracturing subterranean formations. Specific forms of ferric sulfate and ferric ammonium citrate are useful as ingredients of the crosslinking composition.