US 12,252,945 B2
System and method for pressure activation of a tool in a wellbore
Hassan W. Otaif, Dhahran (SA); and Alexander Boers, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on May 26, 2023, as Appl. No. 18/324,410.
Prior Publication US 2024/0392641 A1, Nov. 28, 2024
Int. Cl. E21B 34/14 (2006.01); E21B 23/04 (2006.01); E21B 43/14 (2006.01)
CPC E21B 23/0413 (2020.05) [E21B 34/142 (2020.05); E21B 43/14 (2013.01)] 20 Claims
OG exemplary drawing
 
18. A method for pressure activation of a tool in a wellbore, the method comprising:
setting a sealing seat in the tool in a horizontal section of the wellbore;
coupling a timer to a self-driven sealing ball;
wherein the timer is configured for sending a signal to a controller to activate the self-driven sealing ball to self-roll,
wherein the timer starts a counting when the self-driven sealing ball is dropped into the wellbore, and
wherein the timer sends the signal when the counting reaches a predefined time period,
wherein the controller ends the counting upon detection of a pressure spike,
activating the self-driven sealing ball to roll through the wellbore independently from fluid speed and motion and come to be in place in the sealing seat thereby forming a sealing of the horizontal section of the wellbore against fluid flow therethrough;
pressurizing the wellbore to form the pressure spike; and
pressure activating the tool for a completion operation using the pressure spike.