METHOD AND APPARATUS FOR CHARACTERIZING AND ESTIMATING PERMEABILITY USING LWD STONELEY-WAVE DATA

摘要

Stoneley-wave data acquired in the LWD environment are used to characterize/estimate formation permeability. Real-time Stoneley-wave time- delay/slowness and center-frequency /attenuation data are used to indicate/characterize formation permeability even during drilling. The use of stabilizers mounted at the tool ends helps maintain the tool position from severe decentralization, reducing ambiguities in the permeability characterization/estimation.