US 11,773,691 B2
Remotely operated isolation valve
Joe Noske, Houston, TX (US); Roddie R. Smith, Katy, TX (US); Paul L. Smith, Katy, TX (US); Thomas F. Bailey, Abilene, TX (US); and Christopher L. McDowell, New Caney, TX (US)
Assigned to WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US)
Filed by Weatherford Technology Holdings, LLC, Houston, TX (US)
Filed on Jan. 13, 2021, as Appl. No. 17/147,676.
Application 14/885,024 is a division of application No. 13/237,347, filed on Sep. 20, 2011, granted, now 9,163,481, issued on Oct. 20, 2015.
Application 17/147,676 is a continuation of application No. 16/259,518, filed on Jan. 28, 2019, granted, now 10,895,130.
Application 16/259,518 is a continuation of application No. 14/885,024, filed on Oct. 16, 2015, granted, now 10,214,999, issued on Feb. 26, 2019.
Claims priority of provisional application 61/492,012, filed on Jun. 1, 2011.
Claims priority of provisional application 61/384,591, filed on Sep. 20, 2010.
Prior Publication US 2021/0131233 A1, May 6, 2021
Int. Cl. E21B 34/14 (2006.01); E21B 23/02 (2006.01); E21B 43/10 (2006.01); E21B 34/10 (2006.01); E21B 23/06 (2006.01); E21B 21/08 (2006.01)
CPC E21B 34/142 (2020.05) [E21B 23/02 (2013.01); E21B 23/06 (2013.01); E21B 34/10 (2013.01); E21B 43/103 (2013.01); E21B 21/085 (2020.05)] 11 Claims
OG exemplary drawing
 
1. A power sub for use in a wellbore, comprising:
a tubular housing having a bore formed therethrough;
a tubular mandrel disposed in the housing, movable relative thereto, and having a profile for receiving a driver of a shifting tool;
a first piston operably coupled to the mandrel and operable to pump hydraulic fluid to an outlet of the housing; and
a release operable to receive a release of the shifting tool after operation of the power sub, thereby depressurizing the shifting tool.