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Title: Multiple caliper arms capable of independent movement

Patent ·
OSTI ID:5293332

This patent describes a multiple arm caliper tool system for use in a well borehole. It comprises: an elongate tool body that adapted to be lowered and retrieved along a well borehole; at least a pari of caliper arms, each of the arms being a piston isolating the chamber; and means for compressing the hydraulic fluid within the chamber so that hydraulic fluid in the chamber is brought to a specified pressure wherein the hydraulic fluid acts on all of the push rods extending into the chamber.

Assignee:
Halliburton Logging Services, Inc., Houston, TX (United States)
Patent Number(s):
US 5086645; A
Application Number:
PPN: US 7-507285
OSTI ID:
5293332
Resource Relation:
Patent File Date: 10 Apr 1990
Country of Publication:
United States
Language:
English