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. 14, 2016
Filed:
Jan. 24, 2013
Applicant:
Qinglin Wu, Baton Rouge, LA (US);
Inventor:
Qinglin Wu, Baton Rouge, LA (US);
Assignee:
Board of Supervisors of Louisiana State University And Agricultural and Mechanical College, Baton Rouge, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 21/00 (2006.01); E21B 33/138 (2006.01); C09K 8/487 (2006.01); C09K 8/504 (2006.01); C09K 8/508 (2006.01);
U.S. Cl.
CPC ...
E21B 21/00 (2013.01); C09K 8/487 (2013.01); C09K 8/508 (2013.01); C09K 8/5045 (2013.01); C09K 2208/08 (2013.01);
Abstract
A method for reducing lost circulation in drilling wells employs composite materials containing an engineering thermoplastic polymer and mineral fibers. Optionally the composites may also include other components such as calcium carbonate and blending agents.