Apparatus for downhole strain measurements and methods of using same

摘要

In one illustrative embodiment the apparatus comprises a body (12), at least one strain gauge cavity (30) in the body, the strain gauge cavity having a strain gauge mounting surface (34) 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 (32) operatively 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. <IMAGE>