US 12,247,459 B2
System and methodology for actuating a downhole device
Cassius Elston, Pearland, TX (US); Thomas Meeks, Houston, TX (US); Venkata Siva Reddy Battula, Houston, TX (US); and Ashish Sharma, Friendswood, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Oct. 25, 2023, as Appl. No. 18/494,040.
Application 18/494,040 is a continuation of application No. 17/594,336, granted, now 11,808,110, previously published as PCT/US2020/029097, filed on Apr. 21, 2020.
Claims priority of provisional application 62/837,786, filed on Apr. 24, 2019.
Prior Publication US 2024/0052723 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 34/10 (2006.01); E21B 34/14 (2006.01)
CPC E21B 34/10 (2013.01) [E21B 34/14 (2013.01); E21B 2200/04 (2020.05)] 14 Claims
OG exemplary drawing
 
12. A method of actuating a valve, comprising:
forming an intermediate chamber between a housing and an actuation piston disposed within the housing, the actuation piston coupled to the valve;
preventing the actuation piston from actuating the valve by blocking fluid flow between the intermediate chamber and an atmospheric pressure chamber formed in the housing;
opening communication between the intermediate chamber and the atmospheric pressure chamber; and
reducing a pressure in the intermediate chamber by transferring fluid from the intermediate chamber into the atmospheric pressure chamber, thereby causing movement of the actuation piston to actuate the valve, wherein reducing the pressure in the intermediate chamber causes movement of an intermediate piston into engagement with an abutment of the actuation piston.