Folding ultrasonic borehole imaging tool

Details Folding ultrasonic borehole imaging tool Folding ultrasonic borehole imaging tool

2011-07-12

2011-07-12

Fitzgerald, John (Department: 2856)

Measuring and testing

Borehole or drilling

Downhole test

C166S241500

Reexamination Certificate

active

07975541

ABSTRACT:
A borehole logging tool includes a housing oriented along a longitudinal axis, and a centralizer assembly that positions the housing substantially at the center of the borehole. In one example, the centralizer assembly includes a plurality of centralizer arms radially extendable outward from the longitudinal axis. The borehole logging tool further includes a scanning head that rotates a plurality of scanning sensors axially within the borehole about the longitudinal axis. The scanning head further includes a plurality of linkage arms coupled to the plurality of scanning sensors such that the scanning sensors are radially extendable outward from the longitudinal axis. The borehole logging tool further includes an extension assembly adapted to substantially concurrently control the radial extension of the centralizer arms and the plurality of sensors.

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