Downhole pulse radar
Abstract
A borehole logging tool generates a fast rise-time, short duration, high peak-power radar pulse having broad energy distribution between 30 MHz and 300 MHz through a directional transmitting and receiving antennas having barium titanate in the electromagnetically active region to reduce the wavelength to within an order of magnitude of the diameter of the antenna. Radar returns from geological discontinuities are sampled for transmission uphole.
- Inventors:
-
- Albuquerque, NM
- Issue Date:
- Research Org.:
- AT&T
- OSTI Identifier:
- 866890
- Patent Number(s):
- 4814768
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- downhole; pulse; radar; borehole; logging; tool; generates; fast; rise-time; duration; peak-power; broad; energy; distribution; 30; mhz; 300; directional; transmitting; receiving; antennas; barium; titanate; electromagnetically; active; region; reduce; wavelength; magnitude; diameter; antenna; returns; geological; discontinuities; sampled; transmission; uphole; radar pulse; barium titanate; active region; energy distribution; receiving antenna; logging tool; borehole logging; pulse radar; fast rise-time; /342/324/
Citation Formats
Chang, Hsi-Tien. Downhole pulse radar. United States: N. p., 1989.
Web.
Chang, Hsi-Tien. Downhole pulse radar. United States.
Chang, Hsi-Tien. Sun .
"Downhole pulse radar". United States. https://www.osti.gov/servlets/purl/866890.
@article{osti_866890,
title = {Downhole pulse radar},
author = {Chang, Hsi-Tien},
abstractNote = {A borehole logging tool generates a fast rise-time, short duration, high peak-power radar pulse having broad energy distribution between 30 MHz and 300 MHz through a directional transmitting and receiving antennas having barium titanate in the electromagnetically active region to reduce the wavelength to within an order of magnitude of the diameter of the antenna. Radar returns from geological discontinuities are sampled for transmission uphole.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.