Patent · US Active

While drilling valve system

US9416606B2 · kind B2 · utility

4Cited by

6References

17Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

Kent David Harms · Richmond, US
Jeremy Murphy · Sugar Land, US
Michael J. Stucker · Sugar Land, US
William E. Brennan, III · Richmond, US
Albert Hoefel · Sugar Land, US
Steven G. Villareal · Houston, US
Julian Pop · Houston, US

Key dates

Filing date	Nov 14, 2012
Grant date	Aug 16, 2016
Priority date	—
Expiry date	Sep 15, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B49/081
WIPO fieldCivil engineering
WIPO sectorOther fields

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.