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.:

US 9297234 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 29, 2016

Filed:

Apr. 21, 2011
Applicants:

Daniel Jon Themig, Calgary, CA;

Michael Kenyon, Calgary, CA;

Inventors:

Daniel Jon Themig, Calgary, CA;

Michael Kenyon, Calgary, CA;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01); E21B 34/08 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 34/14 (2013.01); E21B 34/08 (2013.01); E21B 2034/007 (2013.01);
Abstract

A method and apparatus for wellbore control include a downhole facing ball stop and sealing area that can stop and seal with an actuator ball migrating toward surface with wellbore returns or production. The downhole facing ball stop operates with the returning actuator ball to create a seal against any returns or production migrating toward surface such that well control is provided until the ball is removed from the sealing area or a bypass is opened around the seal.


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