Impedance matched joined drill pipe for improved acoustic transmission
Abstract
An impedance matched jointed drill pipe for improved acoustic transmission. A passive means and method that maximizes the amplitude and minimize the temporal dispersion of acoustic signals that are sent through a drill string, for use in a measurement while drilling telemetry system. The improvement in signal transmission is accomplished by replacing the standard joints in a drill string with joints constructed of a material that is impedance matched acoustically to the end of the drill pipe to which it is connected. Provides improvement in the measurement while drilling technique which can be utilized for well logging, directional drilling, and drilling dynamics, as well as gamma-ray spectroscopy while drilling post shot boreholes, such as utilized in drilling post shot boreholes.
- Inventors:
-
- San Mateo, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 873182
- Patent Number(s):
- 6108268
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- impedance; matched; joined; drill; pipe; improved; acoustic; transmission; jointed; passive; means; method; maximizes; amplitude; minimize; temporal; dispersion; signals; string; measurement; drilling; telemetry; improvement; signal; accomplished; replacing; standard; joints; constructed; material; acoustically; connected; provides; technique; utilized; logging; directional; dynamics; gamma-ray; spectroscopy; post; shot; boreholes; signal transmission; acoustic signals; drill string; acoustic signal; impedance matched; gamma-ray spectroscopy; directional drilling; drill pipe; improved acoustic; ray spectroscopy; acoustic transmission; /367/175/340/439/
Citation Formats
Moss, William C. Impedance matched joined drill pipe for improved acoustic transmission. United States: N. p., 2000.
Web.
Moss, William C. Impedance matched joined drill pipe for improved acoustic transmission. United States.
Moss, William C. Sat .
"Impedance matched joined drill pipe for improved acoustic transmission". United States. https://www.osti.gov/servlets/purl/873182.
@article{osti_873182,
title = {Impedance matched joined drill pipe for improved acoustic transmission},
author = {Moss, William C},
abstractNote = {An impedance matched jointed drill pipe for improved acoustic transmission. A passive means and method that maximizes the amplitude and minimize the temporal dispersion of acoustic signals that are sent through a drill string, for use in a measurement while drilling telemetry system. The improvement in signal transmission is accomplished by replacing the standard joints in a drill string with joints constructed of a material that is impedance matched acoustically to the end of the drill pipe to which it is connected. Provides improvement in the measurement while drilling technique which can be utilized for well logging, directional drilling, and drilling dynamics, as well as gamma-ray spectroscopy while drilling post shot boreholes, such as utilized in drilling post shot boreholes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}