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:
Feb. 15, 2005
Filed:
Mar. 11, 2002
James E. Norfleet, Magnolia, TX (US);
Michael A. Jarrett, Houston, TX (US);
Patricia A. Potts, Houston, TX (US);
Tao Xiang, Houston, TX (US);
Frank E. Evans, The Woodland, TX (US);
James E. Norfleet, Magnolia, TX (US);
Michael A. Jarrett, Houston, TX (US);
Patricia A. Potts, Houston, TX (US);
Tao Xiang, Houston, TX (US);
Frank E. Evans, The Woodland, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A drilling system fluid and method of using same. The drilling system fluid comprises water as a continuous phase, an amount of a multivalent metal, and a quantity of a water soluble polyacrylamide copolymer having a charge density of at least about 1%. In a preferred embodiment, the fluid also comprises a second amount of a monovalent salt effective to increase gas hydrate suppression and decrease density when compared to a fluid consisting essentially of only a divalent salt in the absence of the monovalent salt.