Patent · US Active

Remotely operated isolation valve

US9163481B2 · kind B2 · utility

10Cited by

15References

37Claims

0Family size

Assignee

WEATHERFORD TECHNOLOGY HOLDINGS, LLC · US

Inventors

Joe Noske · Houston, US
Roddie R. Smith · Cypress, US
Paul L. Smith · Katy, US
Thomas F. Bailey · Houston, US
Christopher L. McDowell · New Caney, US

Key dates

Filing date	Sep 20, 2011
Grant date	Oct 20, 2015
Priority date	—
Expiry date	Oct 18, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B21/085
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method of operating an isolation valve in a wellbore includes: deploying a work string into the wellbore through a tubular string disposed in the wellbore. The work string comprises a deployment string, a shifting tool, and a bottomhole assembly (BHA). The tubular string comprises the isolation valve and an actuator. The method further includes rotating the actuator using the shifting tool, thereby opening or closing the isolation valve. The isolation valve isolates a formation from an upper portion of the wellbore in the closed position.

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