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. 02, 2015
Filed:
Aug. 05, 2013
Halliburton Manufacturing & Services Limited, Leatherwood, GB;
Michael John Christie, Aberdeen, GB;
Stuart Gordon, Aberdeen, GB;
Irvine Cardno Brown, Aberdeen, GB;
Michael Adam Reid, Aberdeen, GB;
Halliburton Manufacturing & Services Limited, Leatherhead, GB;
Abstract
A downhole apparatus () adapted to be run on a workstring in a well bore. The apparatus has a body () including ports () and a valve () which is rotatable to open and close the ports to selectively allow fluid flow through the body between regions of a well bore above and below the apparatus. The valve is rotated via a gearbox () and motor () in the apparatus. A sealing arrangement between the valve and body is also described. A method of running the apparatus in a well bore and monitoring pressure above the apparatus in order to control opening and closing of the valve under predetermined conditions is presented.