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US 2006/0064889 A1Published application
Borehole caliper tool
AssigneeSchlumberger Technology Corporation
InventorsMark Fredette, Scott Ritter, Wade DuPree
Life of this patent
Estimating the term…
Abstract
A borehole caliper tool includes a tool body and an arm coupled to the tool body. The arm is deflectable relative to the tool body. The caliper tool further includes a cam coupled to the arm such that a position of the cam changes as the arm deflects. The caliper tool further includes a proximity sensor for sensing the position of the cam, wherein the position of the cam provides an indication of the deflection of the arm relative to the tool body.
Claims21
A borehole caliper tool, comprising:
- a tool body;
- an arm coupled to the tool body, the arm being deflectable relative to the tool body;
- a cam coupled to the arm such that a position of the cam changes as the arm deflects;
- and
- a proximity sensor for sensing the position of the cam, wherein the position of the cam provides an indication of the deflection of the arm relative to the tool body.
2 more elements
A borehole caliper tool, comprising:
- a tool body;
- an arm having a first and second end, the arm being coupled to the tool body at the first end to form a pivot joint;
- a cam coupled to the arm at the first end, the cam adapted to move as the arm moves relative to the tool body;
- and
- a proximity sensor adapted to sense the position of the cam, wherein the position of the cam provides an indication of the movement of the arm relative to the tool body.
2 more elements
A method for gauging a diameter of a borehole, comprising:
- deploying a tool body carrying an arm assembly in the borehole, the arm assembly comprising an arm extending between a surface of the borehole and the tool body and deflectable relative to the tool body as the diameter of the borehole changes, the arm having a cam coupled thereto such that a position of the cam changes as the arm deflects;
- monitoring the position of the cam using a proximity sensor;
- and
- translating the position of the cam into the diameter of the borehole.
1 more element
Dependencies are inferred from the claim text.