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. 15, 1987
Filed:
Jun. 25, 1986
Applicant:
Inventors:
Keith H Hollenbeak, Duncan, OK (US);
Paul S Brown, Jr, Duncan, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02D / ;
U.S. Cl.
CPC ...
405263 ; 166293 ; 252-8551 ; 405264 ;
Abstract
Methods of preparing and using a clay stabilizing agent are provided. The agent is prepared by polymerizing diallyldimethylammonium chloride with sulfur dioxide in the presence of a polymerization reaction rate retarder to form a solid cationic copolymer having a high sulfur content. When dissolved in an aqueous carrier fluid, the copolymer is particularly effective in preventing clay swelling and/or fines migration.