US 12,467,358 B2
Validation for reservoir flow during formation testing
Mehdi Ali Pour Kallehbasti, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 19, 2024, as Appl. No. 18/987,466.
Application 18/987,466 is a continuation of application No. 18/407,681, filed on Jan. 9, 2024, granted, now 12,221,885.
Prior Publication US 2025/0223904 A1, Jul. 10, 2025
Int. Cl. E21B 49/08 (2006.01)
CPC E21B 49/088 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method for performing a pressure test comprising:
inserting a formation testing tool into a wellbore, wherein the formation testing tool includes:
at least one probe;
a pump disposed within the formation testing tool and connected to the at least one probe by at least one probe channel and at least one fluid passageway; and
at least one stabilizer disposed on an opposite side of the formation testing tool as the at least one probe;
identifying parameters of the formation testing tool;
activating the at least one stabilizer, wherein the at least one stabilizer is activated into a surface of the wellbore;
activating the at least one probe, wherein the at least one probe is activated into a mudcake, wherein the mudcake is disposed on the surface of the wellbore;
activating the pump, wherein a formation fluid is drawn in through the at least one probe into the at least one probe channel and the at least one fluid passageway by the pump and increasing pressure with the at least one fluid passageway;
measuring the pressure in the at least one fluid passageway by a pressure sensor;
performing a first pre-test with the pressure sensor;
measuring a drawdown pressure, wherein the drawdown pressure is a difference between the measured drawdown pressure at a beginning of a drawdown pressure period and at an end of the drawdown pressure period;
measuring a buildup pressure, wherein the buildup pressure is a difference between the measured buildup pressure at a beginning of a buildup pressure period and at an end of the buildup pressure period;
performing an additional pre-test when the drawdown pressure is above the buildup pressure; and
validating a formation flow when the drawdown pressure is equal to the buildup pressure.