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Title: RF transmission line and drill/pipe string switching technology for down-hole telemetry

Abstract

A modulated reflectance well telemetry apparatus having an electrically conductive pipe extending from above a surface to a point below the surface inside a casing. An electrical conductor is located at a position a distance from the electrically conductive pipe and extending from above the surface to a point below the surface. Modulated reflectance apparatus is located below the surface for modulating well data into a RF carrier transmitted from the surface and reflecting the modulated carrier back to the surface. A RF transceiver is located at the surface and is connected between the electrically conductive pipe and the electrical conductor for transmitting a RF signal that is confined between the electrically conductive well pipe and the electrical conductor to the modulated reflectance apparatus, and for receiving reflected data on the well from the modulated reflectance apparatus.

Inventors:
 [1];  [1]
  1. Santa Fe, NM
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
913443
Patent Number(s):
7256707
Application Number:
10/872,054
Assignee:
Los Alamos National Security, LLC (Los Alamos, NM)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Clark, David D, and Coates, Don M. RF transmission line and drill/pipe string switching technology for down-hole telemetry. United States: N. p., 2007. Web.
Clark, David D, & Coates, Don M. RF transmission line and drill/pipe string switching technology for down-hole telemetry. United States.
Clark, David D, and Coates, Don M. Tue . "RF transmission line and drill/pipe string switching technology for down-hole telemetry". United States. https://www.osti.gov/servlets/purl/913443.
@article{osti_913443,
title = {RF transmission line and drill/pipe string switching technology for down-hole telemetry},
author = {Clark, David D and Coates, Don M},
abstractNote = {A modulated reflectance well telemetry apparatus having an electrically conductive pipe extending from above a surface to a point below the surface inside a casing. An electrical conductor is located at a position a distance from the electrically conductive pipe and extending from above the surface to a point below the surface. Modulated reflectance apparatus is located below the surface for modulating well data into a RF carrier transmitted from the surface and reflecting the modulated carrier back to the surface. A RF transceiver is located at the surface and is connected between the electrically conductive pipe and the electrical conductor for transmitting a RF signal that is confined between the electrically conductive well pipe and the electrical conductor to the modulated reflectance apparatus, and for receiving reflected data on the well from the modulated reflectance apparatus.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {8}
}

Patent:

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