Vadose zone isobaric well
Abstract
A deep tensiometer is configured with an outer guide tube having a vented interval along a perforate section at its lower end, which is isolated from atmospheric pressure at or above grade. A transducer having a monitoring port and a reference port is located within a coaxial inner guide tube. The reference port of the transducer is open to the vented interval of the outer guide tube, which has the same gas pressure as in the sediment surrounding the tensiometer. The reference side of the pressure transducer is thus isolated from the effects of atmospheric pressure changes and relative to pressure changes in the material surrounding the tensiometer measurement location and so it is automatically compensated for such pressure changes.
- Inventors:
-
- Idaho Falls, ID
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- OSTI Identifier:
- 874082
- Patent Number(s):
- 6308563
- Assignee:
- Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
- DOE Contract Number:
- AC07-94ID13223
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- vadose; zone; isobaric; deep; tensiometer; configured; outer; guide; tube; vented; interval; perforate; section; isolated; atmospheric; pressure; grade; transducer; monitoring; reference; located; coaxial; inner; gas; sediment; surrounding; effects; changes; material; measurement; location; automatically; compensated; atmospheric pressure; gas pressure; pressure transducer; guide tube; vadose zone; /73/
Citation Formats
Hubbell, Joel M, and Sisson, James B. Vadose zone isobaric well. United States: N. p., 2001.
Web.
Hubbell, Joel M, & Sisson, James B. Vadose zone isobaric well. United States.
Hubbell, Joel M, and Sisson, James B. Mon .
"Vadose zone isobaric well". United States. https://www.osti.gov/servlets/purl/874082.
@article{osti_874082,
title = {Vadose zone isobaric well},
author = {Hubbell, Joel M and Sisson, James B},
abstractNote = {A deep tensiometer is configured with an outer guide tube having a vented interval along a perforate section at its lower end, which is isolated from atmospheric pressure at or above grade. A transducer having a monitoring port and a reference port is located within a coaxial inner guide tube. The reference port of the transducer is open to the vented interval of the outer guide tube, which has the same gas pressure as in the sediment surrounding the tensiometer. The reference side of the pressure transducer is thus isolated from the effects of atmospheric pressure changes and relative to pressure changes in the material surrounding the tensiometer measurement location and so it is automatically compensated for such pressure changes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}