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. 14, 2009
Filed:
Nov. 03, 2004
Applicants:
Cindy Ching Fang, College Station, TX (US);
Carl Joseph Thaemlitz, Katy, TX (US);
Inventors:
Cindy Ching Fang, College Station, TX (US);
Carl Joseph Thaemlitz, Katy, TX (US);
Assignee:
Halliburton Energy Services, Inc., Duncan, OK (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01); E21B 43/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lost circulation material and method for treatment employing the material is provided that has particular utility in offshore applications because the material may be used with saltwater or brine, as well as with fresh water, and is biodegradable. The material comprises a biodegradable superabsorbent polysaccharide polymer that is preferably uncrosslinked and non-ionic and that is capable of absorbing multiple times its weight in sea water.