Downhole Tool Non Contact Position Measurement System
OwnerJulien Toniolo, Alan J. Sallwasser +2inventors
InventorsJulien Toniolo, Alan J. Sallwasser, Peter Wells, Mark A. Fredette
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Abstract
A downhole tool includes a position system. The position system includes a hub moveably coupled to a fixed tool string. The hub includes a sensor component. The position system also includes a position sensor disposed within the fixed tool string and segregated from the sensor component. Additionally, the sensor component is at a first pressure and the position sensor is at a second pressure, different than the first pressure.
Claims20
A downhole tool, comprising:
- a position system, comprising:
- a hub moveably coupled to a fixed tool string, wherein the hub comprises a sensor component;
- and
- a position sensor disposed within the fixed tool string and segregated from the sensor component;
- wherein the sensor component is at a first pressure and the position sensor is at a second pressure, different than the first pressure.
The downhole tool of claim 10, wherein the logging tool is configured to make borehole measurements while the drill string is being removed from the borehole.
A logging tool configured to be disposed in a borehole, the logging tool comprising:
- a linkage-less caliper tool configured to move radially relative to the logging tool;
- and
- a position system configured to detect a radial position of the caliper tool.
A method for determining a radial position of a caliper tool, comprising:
- inducing movement of a hub coupled to the caliper tool, wherein the hub is configured to move in response to radial movement of the caliper tool;
- generating a signal indicative of a hub position via a position sensor;
- and
- determining the radial position of the caliper tool based on the signal indicative of the hub position.
Dependencies are inferred from the claim text.