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:
Jun. 13, 2017
Filed:
Jun. 06, 2014
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Charles Timothy Smith, McKinney, TX (US);
William Mark Richards, Flower Mound, TX (US);
Andy Cheng Chang, Houston, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); E21B 33/134 (2006.01); E21B 33/10 (2006.01); E21B 33/12 (2006.01); E21B 33/16 (2006.01); E21B 34/14 (2006.01); E21B 34/00 (2006.01); C09K 8/42 (2006.01); C09K 8/487 (2006.01); E21B 21/00 (2006.01); E21B 33/138 (2006.01);
U.S. Cl.
CPC ...
E21B 33/10 (2013.01); C09K 8/42 (2013.01); C09K 8/487 (2013.01); E21B 21/003 (2013.01); E21B 33/1208 (2013.01); E21B 33/13 (2013.01); E21B 33/134 (2013.01); E21B 33/138 (2013.01); E21B 33/16 (2013.01); E21B 34/00 (2013.01); E21B 34/14 (2013.01); E21B 2033/105 (2013.01); E21B 2034/002 (2013.01);
Abstract
A wellbore cementing plug includes a plug element including a polymer. The polymer is deformable at a first stiffness when subjected to a first strain rate to allow the plug element to pass through a wellbore while sealing against passage of cement past the plug element. The polymer resists deformation at a second, higher stiffness when subjected to a second, higher strain rate to resist allowing the plug element to pass through the wellbore while sealing against passage of cement past the plug element.