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:
Nov. 28, 2000
Filed:
Oct. 21, 1998
Applicant:
Inventors:
Jimmie B Lawson, Houston, TX (US);
Donald L Whitfill, Kingwood, TX (US);
Assignee:
Baroid Technology, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; C09K / ;
U.S. Cl.
CPC ...
166293 ; 175 72 ;
Abstract
Drilling fluids are designed for drilling and cementing through shallow water flows and unconsolidated formations. Such drilling fluids utilize hollow microspheres to increase the volume of the drilling fluid without adding too much weight to the drilling fluid. The drilling fluid is also designed to employ an admixture of silicate, high surface area fibrous material, deformable graphite particles, and an activatable cementitious material to stabilize unconsolidated formations and form a tough filter cake that will bond with the cement casing.