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. 11, 2015
Filed:
Aug. 03, 2011
Applicants:
Henry X. He, Edmonton, CA;
Kwong-onn Chan, Edmonton, CA;
Gene Ambrose, Calgary, CA;
Inventors:
Assignee:
Vetco Gray Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); E21B 33/068 (2006.01);
U.S. Cl.
CPC ...
E21B 33/068 (2013.01);
Abstract
A ball launcher for dispatching balls into a wellbore that includes a manifold for selective attachment to a wellhead assembly and a magazine mounted on the manifold in which the balls are stored for distribution to the manifold. Chambers are provided in a cylinder in the magazine, so that by rotating the cylinder the chambers register with a bore in the manifold, through which the balls are delivered to the wellbore. Flowing a flushing fluid into the bore in the manifold urges the balls downward. An auxiliary line through the manifold provides a conduit for the flushing fluid into the bore.