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Title: Polished Downhole Transducer Having Improved Signal Coupling

Abstract

Apparatus and methods to improve signal coupling in downhole inductive transmission elements to reduce the dispersion of magnetic energy at the tool joints and to provide consistent impedance and contact between transmission elements located along the drill string. A transmission element for transmitting information between downhole tools is disclosed in one embodiment of the invention as including an annular core constructed of a magnetically conductive material. The annular core forms an open channel around its circumference and is configured to form a closed channel by mating with a corresponding annular core along an annular mating surface. The mating surface is polished to provide improved magnetic coupling with the corresponding annular core. An annular conductor is disposed within the open channel.

Inventors:
 [1];  [2]
  1. (Provo, UT)
  2. (Spanish Fork, UT)
Publication Date:
Research Org.:
Novatek Engineering Inc
OSTI Identifier:
880172
Patent Number(s):
US 7,019,665
Application Number:
10/653564
Assignee:
IntelliServ, Inc. (Provo, UT) NETL
DOE Contract Number:
FC26-97FT34365
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Hall, David R., and Fox, Joe. Polished Downhole Transducer Having Improved Signal Coupling. United States: N. p., 2006. Web.
Hall, David R., & Fox, Joe. Polished Downhole Transducer Having Improved Signal Coupling. United States.
Hall, David R., and Fox, Joe. Tue . "Polished Downhole Transducer Having Improved Signal Coupling". United States. doi:. https://www.osti.gov/servlets/purl/880172.
@article{osti_880172,
title = {Polished Downhole Transducer Having Improved Signal Coupling},
author = {Hall, David R. and Fox, Joe},
abstractNote = {Apparatus and methods to improve signal coupling in downhole inductive transmission elements to reduce the dispersion of magnetic energy at the tool joints and to provide consistent impedance and contact between transmission elements located along the drill string. A transmission element for transmitting information between downhole tools is disclosed in one embodiment of the invention as including an annular core constructed of a magnetically conductive material. The annular core forms an open channel around its circumference and is configured to form a closed channel by mating with a corresponding annular core along an annular mating surface. The mating surface is polished to provide improved magnetic coupling with the corresponding annular core. An annular conductor is disposed within the open channel.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 28 00:00:00 EST 2006},
month = {Tue Mar 28 00:00:00 EST 2006}
}

Patent:

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