Measuring and testing – Borehole or drilling – During drilling
Reexamination Certificate
2005-10-25
2005-10-25
Williams, Hezron (Department: 2856)
Measuring and testing
Borehole or drilling
During drilling
C073S152590
Reexamination Certificate
active
06957575
ABSTRACT:
The present invention is generally directed to a tool for obtaining downhole measurements and methods of using such a tool. In one illustrative embodiment the tool comprises a body, at least one strain gauge cavity in the body, the strain gauge cavity having a strain gauge mounting surface that is located at a position such that a region of approximately zero strain due to at least one downhole operating condition exists on the mounting surface when the tool is subjected to downhole operating conditions, and a strain gauge operatively coupled to the mounting face above the region of approximately zero strain. In another illustrative embodiment, the method comprises providing a measurement tool comprised of a body, at least one strain gauge cavity in the body, the strain gauge cavity having a strain gauge mounting surface that is located at a position such that a region of approximately zero strain due to at least one downhole operating condition exists on the mounting surface when the tool is subjected to downhole operating conditions, and a strain gauge coupled to the mounting face above the region of approximately zero strain. The method further comprises positioning the tool in a subterranean well bore and obtaining measurement data using the strain gauge in the tool.
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Boucher Marcel Luke
Ivie Craig Robert
Jarvis Brian Peter
Schen Aaron
Daly Jeffery E.
Fitzgerald John
ReedHycalog, L.P.
Williams Hezron
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