| CPC E21B 49/088 (2013.01) | 19 Claims |
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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 pre-test with the pressure sensor;
measuring a drawdown pressure;
measuring a buildup pressure;
performing another pre-test when the drawdown pressure is superior to the buildup pressure; and
validating a formation flow when the drawdown pressure is equal to the buildup pressure, wherein a measured pressure obtained at an asymptote of a pressure curve after the buildup pressure corresponds to a formation pore pressure.
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