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. 04, 1997
Filed:
Feb. 17, 1995
Applicant:
Inventors:
John A Toups, Jr, Sugar Land, TX (US);
David B Young, Kingwood, TX (US);
Majeed H Yousif, Woodlands, TX (US);
B C Smolen, Houston, TX (US);
Jonathan Holt, Houston, TX (US);
Assignee:
BP Exploration & Oil, Inc., Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; E21B / ;
U.S. Cl.
CPC ...
507103 ; 507116 ; 507138 ; 507136 ; 166356 ;
Abstract
An environmentally acceptable, thermally insulating annular fluid comprised of a liquid which is non-aqueous, non-corrosive, and thermally insulating, a clay gellant, and a clay dispersant. A preferred packer fluid includes an ester originated from a vegetable or animal oil as at least a major portion of the liquid phase.