Magnetic detection of underground pipe using timed-release marking droplets
Abstract
A system and method are disclosed of detecting an underground pipe by injecting magnetic marking droplets into the underground pipe which coat the inside of the pipe and may be detected from aboveground by a magnetometer. The droplets include a non-adhesive cover which allows free flow through the pipe, with the cover being ablatable for the timed-release of a central core containing magnetic particles which adhere to the inside of the pipe and are detectable from aboveground. The rate of ablation of the droplet covers is selectively variable to control a free flowing incubation zone for the droplets and a subsequent deposition zone in which the magnetic particles are released for coating the pipe. 6 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Associated Universities Inc
- OSTI Identifier:
- 415743
- Patent Number(s):
- 5585725
- Application Number:
- PAN: 8-421,567
- Assignee:
- Associated Universities, Inc., Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 17 Dec 1996
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; MAGNETOMETERS; DESIGN; PIPES; DETECTION; MAGNETIC SURVEYS; SITE CHARACTERIZATION
Citation Formats
Powell, J R, and Reich, M. Magnetic detection of underground pipe using timed-release marking droplets. United States: N. p., 1996.
Web.
Powell, J R, & Reich, M. Magnetic detection of underground pipe using timed-release marking droplets. United States.
Powell, J R, and Reich, M. Tue .
"Magnetic detection of underground pipe using timed-release marking droplets". United States.
@article{osti_415743,
title = {Magnetic detection of underground pipe using timed-release marking droplets},
author = {Powell, J R and Reich, M},
abstractNote = {A system and method are disclosed of detecting an underground pipe by injecting magnetic marking droplets into the underground pipe which coat the inside of the pipe and may be detected from aboveground by a magnetometer. The droplets include a non-adhesive cover which allows free flow through the pipe, with the cover being ablatable for the timed-release of a central core containing magnetic particles which adhere to the inside of the pipe and are detectable from aboveground. The rate of ablation of the droplet covers is selectively variable to control a free flowing incubation zone for the droplets and a subsequent deposition zone in which the magnetic particles are released for coating the pipe. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 17 00:00:00 EST 1996},
month = {Tue Dec 17 00:00:00 EST 1996}
}