Apparatus and method for maintaining low temperatures about an object at a remote location
Abstract
The disclosure is directed to an apparatus and method for maintaining a body at cryogenic temperatures at a remote location such as down a borehole for an extended period of time. A housing contains a body comprising a material having a high specific heat at cryogenic temperatures such as between about 2 and 15 K. The body contains an orifice for containing an instrument or instruments operable at superconducting temperatures. The apparatus is precooled at the surface and lowered into a borehole to a desired depth, such as 2 to 3 miles. The instruments are operated, and the apparatus withdrawn, the material of the body maintaining the very low temperatures at which the instrument(s) operate for a sufficient period of time at the remote or downhole location. The material may comprise a rare earth compound, such as Gd.sub.2 O.sub.3, Gd.sub.2 Se.sub.3, Gd.sub.2 O.sub.2 S or GdAlO.sub.3. Monoclinic and C-phase gadolinium oxides work well. A low temperature is maintainable at a remote location for several hours.
- Inventors:
-
- (Los Alamos, NM)
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM
- OSTI Identifier:
- 864270
- Patent Number(s):
- 4340405
- Assignee:
- United States of America as represented by United States (Washington, DC) LANL
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- apparatus; method; maintaining; temperatures; remote; location; disclosure; directed; cryogenic; borehole; extended; period; time; housing; contains; comprising; material; specific; heat; 15; orifice; containing; instrument; instruments; operable; superconducting; precooled; surface; lowered; desired; depth; miles; operated; withdrawn; operate; sufficient; downhole; comprise; rare; earth; compound; gd; gdalo; monoclinic; c-phase; gadolinium; oxides; temperature; maintainable; hours; specific heat; cryogenic temperature; superconducting temperatures; cryogenic temperatures; rare earth; remote location; sufficient period; extended period; earth compound; housing contains; desired depth; gadolinium oxide; downhole location; superconducting temperature; /62/165/505/
Citation Formats
Steyert, Jr., William A., and Overton, Jr., William C. Apparatus and method for maintaining low temperatures about an object at a remote location. United States: N. p., 1982.
Web.
Steyert, Jr., William A., & Overton, Jr., William C. Apparatus and method for maintaining low temperatures about an object at a remote location. United States.
Steyert, Jr., William A., and Overton, Jr., William C. Fri .
"Apparatus and method for maintaining low temperatures about an object at a remote location". United States. https://www.osti.gov/servlets/purl/864270.
@article{osti_864270,
title = {Apparatus and method for maintaining low temperatures about an object at a remote location},
author = {Steyert, Jr., William A. and Overton, Jr., William C.},
abstractNote = {The disclosure is directed to an apparatus and method for maintaining a body at cryogenic temperatures at a remote location such as down a borehole for an extended period of time. A housing contains a body comprising a material having a high specific heat at cryogenic temperatures such as between about 2 and 15 K. The body contains an orifice for containing an instrument or instruments operable at superconducting temperatures. The apparatus is precooled at the surface and lowered into a borehole to a desired depth, such as 2 to 3 miles. The instruments are operated, and the apparatus withdrawn, the material of the body maintaining the very low temperatures at which the instrument(s) operate for a sufficient period of time at the remote or downhole location. The material may comprise a rare earth compound, such as Gd.sub.2 O.sub.3, Gd.sub.2 Se.sub.3, Gd.sub.2 O.sub.2 S or GdAlO.sub.3. Monoclinic and C-phase gadolinium oxides work well. A low temperature is maintainable at a remote location for several hours.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}