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. 7 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- OSTI Identifier:
- 6866222
- Patent Number(s):
- 6101536
- Assignee:
- SNL; EDB-88-179324
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; RADAR; DESIGN; ANTENNAS; FLOWSHEETS; INVENTIONS; WELL LOGGING EQUIPMENT; DIAGRAMS; ELECTRICAL EQUIPMENT; EQUIPMENT; MEASURING INSTRUMENTS; RANGE FINDERS; 440400* - Well Logging Instrumentation; 440300 - Miscellaneous Instruments- (-1989)
Citation Formats
Chang, Hsi-Tien. Downhole pulse radar. United States: N. p., 1987.
Web.
Chang, Hsi-Tien. Downhole pulse radar. United States.
Chang, Hsi-Tien. Mon .
"Downhole pulse radar". United States.
@article{osti_6866222,
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. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 28 00:00:00 EDT 1987},
month = {Mon Sep 28 00:00:00 EDT 1987}
}
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