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:
Mar. 29, 1983
Filed:
Aug. 21, 1981
Applicant:
Inventors:
Hui-Min Hsu, Duncan, OK (US);
John W Burnham, Bethany, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; E21B / ;
U.S. Cl.
CPC ...
166295 ; 106194 ; 106208 ; 166294 ; 252 / ; 524 55 ;
Abstract
Methods, additives and compositions for selectively temporarily sealing high temperature permeable formations penetrated by well bores. The compositions are formed by dispersing a granular additive into an aqueous medium which contains a galactomannan gum treated with potassium pyroantimonate whereby the hydration rate of the gum is retarded at temperatures below about 120.degree. F. but increases at temperatures thereabove. When the composition is introduced into a high temperature permeable formation, it is heated whereby the treated galactomannan gum hydrates and the composition is formed into a stiff gel.