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:
Jun. 19, 1996
Applicant:
Inventors:
Robert B Carpenter, Allen, TX (US);
J Michael Wilson, Duncan, OK (US);
Bill W Loughridge, Duncan, OK (US);
David L Johnson, Dallas, TX (US);
Krishna M Ravi, Duncan, OK (US);
Richard R Jones, Allen, TX (US);
Assignees:
Halliburton Company, Duncan, OK (US);
Atlantic Richfield Company, Plano, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ; C09K / ;
U.S. Cl.
CPC ...
507209 ; 507211 ; 507213 ; 507216 ; 507225 ; 507226 ; 507228 ; 507229 ; 507262 ; 507928 ; 166291 ;
Abstract
A well completion spacer fluid is provided which is particularly suitable for separating a cement slurry from drilling fluid in primary cementing operations. The well completion spacer fluid is also useful for separating other potentially incompatible fluids in the wellbore, such as, separating drilling fluid from a completion brine. The spacer fluid basically comprises water, a hydrous magnesium silicate clay, silica and organic polymer(s).