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US 7,025,130 B2Granted
Methods and apparatus to control downhole tools
AssigneeWeatherford/Lamb, Inc.
InventorsThomas F. Bailey, Michael Nero, Timothy L. Wilson
Life of this patent
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Abstract
The present invention generally provides a downhole tool with an improved means of transmitting data to and from the tool through the use of wired pipe capable of transmitting a signal and/or power between the surface of the well and any components in a drill string. In one aspect, a downhole tool includes a body, and a mandrel disposed in the body and movable in relation to the body. A conducive wire runs the length of the body and permits signals and/or power to be transmitted though the body as the tool changes its length.
Claims17
An assembly for use in a wellbore, comprising:
- a tubular string;
- a signal transducing downhole device;
- and
- an axially extendable tool located between the signal transducing downhole device and an upper end of the tubular string, comprising:
- a signal path therethrough,
- a flow path therethrough,
- a housing,
- a mandrel axially movable relative to the housing, and
- an axially displaceable electrical coupling between the housing and the mandrel.
6 more elements
Dependencies are inferred from the claim text.