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. 17, 2010
Filed:
Jul. 25, 2008
David Merlau, Friendswood, TX (US);
Lang Zhan, Pearland, TX (US);
Dhandayuthapani Kannan, Missouri City, TX (US);
Jim B. Benton, Huffman, TX (US);
David Merlau, Friendswood, TX (US);
Lang Zhan, Pearland, TX (US);
Dhandayuthapani Kannan, Missouri City, TX (US);
Jim B. Benton, Huffman, TX (US);
Schlumberber Technology Corporation, Sugar Land, TX (US);
Abstract
An apparatus for use in a wellbore includes a tool string and a plurality of sensors, which include at least a first sensor to detect pressure signals in an inner conduit of the tool string and at least a second sensor to detect pressure signals in an annulus outside the tool string. A controller actuates a tool in the tool string in response to a logical combination of outputs from the sensors, where the outputs of the sensors are responsive to the respective pressure signals.