This paper presents the results of a study designed to determine well testing procedures required to overcome the effects of formation damage from drilling, completion and other fluids in order to permit the derivation of realistic values of original formation permeability. A variety of possible drilling, completion and well testing conditions was modeled using a numerical multiphase reservoir simulator. Results indicate the possible lengths of the tests that may be required for various expected permeability ranges and how to allocate drawdown to buildup time for a fixed testing time to optimize results.

You can access this article if you purchase or spend a download.