Electromagnetic anti-jam telemetry tool
Patent
·
OSTI ID:983083
- Sugar Land, TX
- Missouri City, TX
A mud-pulse telemetry tool includes a tool housing, a motor disposed in the tool housing, and a magnetic coupling coupled to the motor and having an inner shaft and an outer shaft. The tool may also include a stator coupled to the tool housing, a restrictor disposed proximate the stator and coupled to the magnetic coupling, so that the restrictor and the stator adapted to generate selected pulses in a drilling fluid when the restrictor is selectively rotated. The tool may also include a first anti-jam magnet coupled to the too housing, and an second anti-jam magnet disposed proximate the first anti-jam magnet and coupled to the inner shaft and/or the outer shaft, wherein at least one of the first anti-jam magnet and the second anti-jam magnet is an electromagnet, and wherein the first anti-jam magnet and the second anti-jam magnet are positioned with adjacent like poles.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-03NT41835
- Assignee:
- Schlumberger Technology Corporation (Sugar Land, TX)
- Patent Number(s):
- 7,330,397
- Application Number:
- 10/905,953
- OSTI ID:
- 983083
- Country of Publication:
- United States
- Language:
- English
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