Analyzing resistivity images for determining downhole events...

Details Analyzing resistivity images for determining downhole events... Analyzing resistivity images for determining downhole events...

2008-05-09

2010-11-02

Bomar, Shane (Department: 3676)

Boring or penetrating the earth

Processes

C175S045000, C175S040000, C073S152480, C073S862392

Reexamination Certificate

active

07823658

ABSTRACT:
Borehole images obtained with MWD measurements have a mismatch with subsequent images obtained when measurements are repeated over the same depth interval after the drillstring has been raised up. The difference is attributable to stretch of the drillstring. This can be estimated by correlating the two images. The difference can also be estimated by monitoring drilling conditions such as RPM, WOB and torque on reentry.

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