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. 13, 2019
Filed:
May. 26, 2017
Applicant:
Top-co, Inc., Houston, TX (US);
Inventor:
Alfredo Sanchez, Tomball, TX (US);
Assignee:
TOP-CO INC., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/10 (2006.01); E21B 33/14 (2006.01);
U.S. Cl.
CPC ...
E21B 17/1078 (2013.01); E21B 33/14 (2013.01);
Abstract
Asymmetric casing centralizers are provided with varying flow resistances caused by a combination of straight vanes and spiral vanes; as a result, the casing centralizer has varying pressure drops thereacross when the casing centralizer is positioned within a preexisting structure such as, for example, a horizontal wellbore section that traverses one or more subterranean formations.