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:
May. 19, 2009
Filed:
Dec. 05, 2006
Jeff Kirsner, Humble, TX (US);
Don Siems, Houston, TX (US);
Kimberly Burrows-lawson, Kingwood, TX (US);
David Carbajal, Houston, TX (US);
Ian Robb, Duncan, OK (US);
Dale E. Jamison, Humble, TX (US);
Jeff Kirsner, Humble, TX (US);
Don Siems, Houston, TX (US);
Kimberly Burrows-Lawson, Kingwood, TX (US);
David Carbajal, Houston, TX (US);
Ian Robb, Duncan, OK (US);
Dale E. Jamison, Humble, TX (US);
Halliburton Energy Services, Inc., Duncan, OK (US);
Abstract
Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or having fragile gel behavior and providing superior oil mud rheology and overall performance. The fluids are especially advantageous for use in offshore wells because the fluids exhibit minimal differences between downhole equivalent circulating densities and surface densities notwithstanding differences in drilling or penetration rates. When an ester and isomerized olefin blend is used for the base of the fluids, the fluids make environmentally acceptable and regulatory compliant invert emulsion drilling fluids.