US 12,215,563 B2
Liner top diagnostic tool
Muhammad Ali Qureshi, Abqaiq (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Nov. 14, 2022, as Appl. No. 17/986,593.
Prior Publication US 2024/0159122 A1, May 16, 2024
Int. Cl. E21B 33/128 (2006.01); E21B 23/06 (2006.01); E21B 47/117 (2012.01)
CPC E21B 33/128 (2013.01) [E21B 23/06 (2013.01); E21B 47/117 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
running inflow packers in a locked position downhole into a well;
running a liner top diagnostic tool (LTDT) in a drill pipe to a desired depth in the well;
dropping, using a string, a lower-packer-sized ball to activate a lower inflow packer into a well assembly;
pressure-testing a back side of the lower inflow packer assembly to ensure a seal integrity;
unsetting the lower inflow packer by withdrawing a string weight while rotating the string;
displacing the string to test fluid to the end of the string, and applying weight and rotation to set the lower inflow packer;
establishing a Horner plot based, at least in part, on performing an inflow test;
dropping a deactivation-sized ball into the well to deactivate the lower inflow packer included in the well assembly;
activating an upper inflow packer assembly using upper-packer-sized balls; and
identifying a leak into the well based, at least in part, on testing liner tops.