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:
Dec. 17, 2013
Filed:
Jul. 04, 2008
Applicant:
Terry W Hoskins, Calgary, CA;
Inventor:
Terry W Hoskins, Calgary, CA;
Assignee:
Canadian Energy Services, LP, Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/00 (2006.01); E21B 33/13 (2006.01); C09K 8/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Generally, the present invention provides drilling fluid additives for reducing or controlling lost circulation in a drilling operation. The additives comprises particles. The particles comprise one or more solids in association a wax or waxy substance. A drilling fluid comprising a drilling fluid additive of the invention is also provided, as well as a method and use of the drilling fluid additive in a drilling operation to reduce or control lost circulation. Methods for manufacturing the drilling fluid additives are also described.