Patent ID: 8473214
Filing Date: 2013-06-25
Classification: E21B

Abstract:
1. A method for determining permeability of a reservoir having a formation with a thickness using a packer-probe formation testing tool, comprising: generating, using a dual packer tool module, fluid flows from the reservoir into a wellbore; obtaining pressure data associated with the fluid flows using an observation probe tool module, wherein the packer-probe formation testing tool comprises the dual packer module and the observation probe tool module; identifying a portion of the pressure data corresponding to a spherical flow regime; generating, using the portion of the pressure data, a spherical flow plot of build-up probe pressure versus spherical build-up superposition time; determining a spherical flow slope from the spherical flow plot; determining horizontal permeability independent of the thickness of the formation based on the portion of the pressure data and the spherical flow slope; and displaying an output generated using the horizontal permeability.