Formation evaluation using estimated borehole tool position

Details Formation evaluation using estimated borehole tool position Formation evaluation using estimated borehole tool position

2007-09-27

2009-06-16

Nghiem, Michael P. (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

Reexamination Certificate

active

07548817

ABSTRACT:
Caliper measurements made during rotation of a bottomhole assembly are processed to estimate the location of the BHA, and size and shape of the borehole. A piecewise elliptical fitting procedure may be used. These estimates may be used to correct measurements made by a standoff-sensitive formation evaluation sensor such as a neutron porosity tool.

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