Downhole Cable Sensor
AssigneeSchlumberger Technology Corporation
InventorsNikhil Dalvi, Edward Harrigan
Life of this patent
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Abstract
A method and apparatus for evaluating the subterranean formation of a wellbore is presented. The method includes conveying a downhole tool in a wellbore via a cable, and determining the torque in the cable in real-time. The method further involves conveying the downhole tool on a wireline, and automatically triggering an alert when the torque reaches a certain level. The apparatus includes a cable, a downhole tool attached to the cable for conveyance within the wellbore, and a sensor to measure torque in the cable. The apparatus may also include a telemetry system to communicate the torque data to the surface. The downhole tool includes a sensor to measure the relative torque between the downhole tool and the cable in real time.
Claims21
An apparatus for conveyance within a wellbore extending into a subterranean formation, comprising:
- a cable;
- a downhole tool attached to the cable;
- and
- a sensor to measure the relative torque between the downhole tool and the cable in real time.
A method, comprising:
- conveying a downhole tool in a wellbore extending into a subterranean formation on a cable;
- and
- determining the torque in the cable in real time while the downhole tool is being conveyed.
Dependencies are inferred from the claim text.