System and method for imaging properties of subterranean formations

摘要

A system and method for imaging properties of subterranean formations in a wellbore is provided. The system comprises a formation sensor for collecting currents injected into the subterranean formations, the formation sensor positionable on a downhole tool deployable into the wellbore. The system comprises a controller for controlling the formation sensor and a formation imaging unit. The formation imaging unit comprises a current management unit for collecting data from the currents injected into the subterranean formations, the currents having at least two different frequencies. The formation imaging unit comprises a drilling mud data unit for determining at least one drilling mud parameter, a formation data unit for determining at least one formation parameter from the collected data, and an inversion unit for determining at least one formation property by inverting the at least one formation parameter.

主权项

1. A formation imaging unit for imaging properties of at least one subterranean formation in a wellbore at a wellsite, the formation imaging unit comprising:
a current management unit for collecting data from at least two currents injected into the at least one subterranean formation, the at least two currents having at least two different frequencies; a drilling mud data unit for determining at least one drilling mud parameter; a formation data unit for determining at least one formation parameter from the collected data; and an inversion unit for determining at least one formation property by inverting the at least one formation parameter, wherein the at least one formation property is determined by inverting the drilling mud parameter and the at least one formation parameter, andwherein a sensor standoff is determined by the inversion unit.