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. 07, 2018
Filed:
Mar. 31, 2014
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Olga Alexandrovna Minikh, Moscow, RU;
Diankui Fu, Kuala Lumpur, MY;
Fatma Daou, Rio de Janerio, BR;
Bernhard Lungwitz, Wuerzburg, DE;
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); E21B 21/00 (2006.01); C09K 8/42 (2006.01); C09K 8/04 (2006.01); C09K 8/32 (2006.01); C09K 8/36 (2006.01); E21B 33/138 (2006.01);
U.S. Cl.
CPC ...
C09K 8/426 (2013.01); C09K 8/04 (2013.01); C09K 8/32 (2013.01); C09K 8/36 (2013.01); E21B 21/003 (2013.01); E21B 33/138 (2013.01); C09K 2208/08 (2013.01);
Abstract
Adding shapeable particles to drilling fluids may be useful for curing lost circulation. When the shapeable particles are pumped downhole through the drillpipe and the drillbit, they may deform when exposed to shear as they pass through the drillbit nozzles. While circulating back toward the surface they may relax at least partially and assume the shape of cracks or voids they encounter along the formation wall, thereby stopping losses.