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. 11, 2000
Filed:
Jun. 05, 1998
Applicant:
Inventors:
Steven B Laramay, Balch Springs, TX (US);
Rebecca G Udarbe, Garland, TX (US);
Assignee:
Fritz Industries, Inc., Mesquite, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166293 ; 106696 ; 106725 ; 106727 ; 106823 ; 166295 ; 524-3 ; 524-5 ;
Abstract
This invention discloses a polymer composition, a cement slurry containing said polymer composition and a method of using the cement slurry to cement a borehole penetrating a subsurface earth formation wherein the polymer composition is made by polymerizing a vinylamide morpholine derivative and at least one branched N-vinylamide derivative in the presence of a humate. The polymer composition operates to reduce fluid loss from the cement slurry to the subsurface formation.