skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis

Abstract

A casing-less down hole sampling system for acquiring a subsurface sample for analysis using an inductively coupled plasma system is disclosed. The system includes a probe which is pushed into the formation to be analyzed using a hydraulic ram system. The probe includes a detachable tip member which has a soil point and a barb, with the soil point aiding the penetration of the earth, and the barb causing the tip member to disengage from the probe and remain in the formation when the probe is pulled up. The probe is forced into the formation to be tested, and then pulled up slightly, to disengage the tip member and expose a column of the subsurface formation to be tested. An instrumentation tube mounted in the probe is then extended outward from the probe to longitudinally extend into the exposed column. A balloon seal mounted on the end of the instrumentation tube allows the bottom of the column to be sealed. A source of laser radiation is emitted from the instrumentation tube to ablate a sample from the exposed column. The instrumentation tube can be rotated in the probe to sweep the laser source across the surface of the exposed column.more » An aerosol transport system carries the ablated sample from the probe to the surface for testing in an inductively coupled plasma system. By testing at various levels in the down-hole as the probe is extracted from the soil, a profile of the subsurface formation may be obtained. 9 figs.« less

Inventors:
; ;
Issue Date:
Research Org.:
Iowa State Univ., Ames, IA (United States)
OSTI Identifier:
378129
Patent Number(s):
5,561,516
Application Number:
PAN: 8-283,079
Assignee:
Iowa State Univ. Research Foundation, Inc., Ames, IA (United States)
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 1 Oct 1996
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; SAMPLERS; DESIGN; BOREHOLES; SAMPLING; SOILS; PROBES; SEALS; OPERATION; ABLATION; LASER-RADIATION HEATING; SOIL CHEMISTRY

Citation Formats

Noble, D T, Braymen, S D, and Anderson, M S. Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis. United States: N. p., 1996. Web.
Noble, D T, Braymen, S D, & Anderson, M S. Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis. United States.
Noble, D T, Braymen, S D, and Anderson, M S. Tue . "Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis". United States.
@article{osti_378129,
title = {Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis},
author = {Noble, D T and Braymen, S D and Anderson, M S},
abstractNote = {A casing-less down hole sampling system for acquiring a subsurface sample for analysis using an inductively coupled plasma system is disclosed. The system includes a probe which is pushed into the formation to be analyzed using a hydraulic ram system. The probe includes a detachable tip member which has a soil point and a barb, with the soil point aiding the penetration of the earth, and the barb causing the tip member to disengage from the probe and remain in the formation when the probe is pulled up. The probe is forced into the formation to be tested, and then pulled up slightly, to disengage the tip member and expose a column of the subsurface formation to be tested. An instrumentation tube mounted in the probe is then extended outward from the probe to longitudinally extend into the exposed column. A balloon seal mounted on the end of the instrumentation tube allows the bottom of the column to be sealed. A source of laser radiation is emitted from the instrumentation tube to ablate a sample from the exposed column. The instrumentation tube can be rotated in the probe to sweep the laser source across the surface of the exposed column. An aerosol transport system carries the ablated sample from the probe to the surface for testing in an inductively coupled plasma system. By testing at various levels in the down-hole as the probe is extracted from the soil, a profile of the subsurface formation may be obtained. 9 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {10}
}