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:
Jan. 22, 2019
Filed:
Aug. 10, 2016
Schlumberger Technology Corporation, Sugar Land, TX (US);
Kent David Harms, Richmond, TX (US);
Jeremy T. Murphy, Sugar Land, TX (US);
Michael J. Stucker, Sugar Land, TX (US);
William E. Brennan, III, Sulphur Springs, TX (US);
Albert Hoefel, Sugar Land, TX (US);
Steven G. Villareal, Stonehouse, GB;
Julian J. Pop, Houston, TX (US);
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
A system includes a valve subassembly configured to be disposed along an internal flowline exit of a first internal flowline within a downhole drilling module. The valve subassembly includes an active valve configured to regulate flow of a fluid through the internal flowline exit and a passive valve configured to be passively controlled based on a differential pressure between a first volume of the downhole drilling module and a second volume surrounding the downhole drilling module.