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. 14, 2021
Filed:
May. 10, 2019
Applicant:
David O. Trahan, Lafayette, LA (US);
Inventor:
David O. Trahan, Lafayette, LA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01); C09K 8/66 (2006.01); C08L 5/00 (2006.01); C08L 3/04 (2006.01);
U.S. Cl.
CPC ...
C09K 8/68 (2013.01); C09K 8/665 (2013.01); C08L 3/04 (2013.01); C08L 5/00 (2013.01);
Abstract
A clay control additive for wellbore fluids comprises a blended starch polymer solution comprising a quarternary amine-functionalized starch polymer. The polymer is preferably cationized to a degree of substitution of at least 0.30. The starches may be synthetic or blended from natural amylose cationic starches. In an embodiment, a further additive comprises cactus mucilage obtained from thegenus, which may be combined with the starch polymer in a 1 to 95% solution. In another embodiment, both the starch and the mucilage may be further combined with conventional additives (e.g., choline chloride) to further enhance the clay control properties.