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Title: Electromagnetic anti-jam telemetry tool

Abstract

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.

Inventors:
 [1];  [2]
  1. Sugar Land, TX
  2. Missouri City, TX
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
983083
Patent Number(s):
7330397
Application Number:
10/905,953
Assignee:
Schlumberger Technology Corporation (Sugar Land, TX)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
DOE Contract Number:  
FC26-03NT41835
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Ganesan, Harini, and Mayzenberg, Nataliya. Electromagnetic anti-jam telemetry tool. United States: N. p., 2008. Web.
Ganesan, Harini, & Mayzenberg, Nataliya. Electromagnetic anti-jam telemetry tool. United States.
Ganesan, Harini, and Mayzenberg, Nataliya. Tue . "Electromagnetic anti-jam telemetry tool". United States. https://www.osti.gov/servlets/purl/983083.
@article{osti_983083,
title = {Electromagnetic anti-jam telemetry tool},
author = {Ganesan, Harini and Mayzenberg, Nataliya},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {2}
}

Patent:

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