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:
Aug. 04, 1998
Filed:
Mar. 13, 1996
Applicant:
Inventor:
Arvind D Patel, Houston, TX (US);
Assignee:
M-I Drilling Fluids, L.L.C., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
507121 ; 507120 ; 507122 ; 507118 ; 507119 ;
Abstract
This invention relates to an improved water based drilling fluid containing a controlled cross-linked polymeric fluid loss control agent. The novel polymeric fluid loss control agent of this invention exhibits improved thermal stability and other enhanced drilling fluid additive properties. The controlled cross-linking of the polymer of this invention results from the addition of specific amounts and types of cross-linking agents.