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. 22, 1977
Filed:
Dec. 11, 1975
Applicant:
Inventors:
Paul W Fischer, Whittier, CA (US);
Jerry C Jones, deceased, late of Memez Springs, NM (US);
Delbert E Pyle, Northridge, CA (US);
Stephen Pye, Brea, CA (US);
Assignee:
Union Oil Company of California, Brea, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; E21C / ;
U.S. Cl.
CPC ...
252 / ; 175 69 ; 175 71 ;
Abstract
A composition and method for drilling a well into a subterranean formation containing a geothermal fluid utilizing a gas-containing aqueous drilling fluid containing both lignite and a salt of a high molecular weight acrylic polymer.