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Title: Apparatus and method for maintaining low temperatures about an object at a remote location. [Patent application]

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 The instruments are operated, and the apparatus withdrawn, the material of the body maintaining the very low temperatures at which the instrument(s) operate for a sufficient period of time at the remote or downhole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:
;
Issue Date:
OSTI Identifier:
6156557
Assignee:
Dept. of Energy TIC; ERA-06-031079; EDB-81-100014
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 47 OTHER INSTRUMENTATION; SUPERCONDUCTING DEVICES; DESIGN; OPERATION; WELL LOGGING EQUIPMENT; TEMPERATURE CONTROL; BOREHOLES; CRYOGENICS; ULTRALOW TEMPERATURE; CAVITIES; CONTROL; EQUIPMENT; 420201* - Engineering- Cryogenic Equipment & Devices; 440400 - Well Logging Instrumentation

Citation Formats

Steyert, W.A. Jr., and Overton, W.C. Jr. Apparatus and method for maintaining low temperatures about an object at a remote location. [Patent application]. United States: N. p., 1980. Web.
Steyert, W.A. Jr., & Overton, W.C. Jr. Apparatus and method for maintaining low temperatures about an object at a remote location. [Patent application]. United States.
Steyert, W.A. Jr., and Overton, W.C. Jr. Wed . "Apparatus and method for maintaining low temperatures about an object at a remote location. [Patent application]". United States.
@article{osti_6156557,
title = {Apparatus and method for maintaining low temperatures about an object at a remote location. [Patent application]},
author = {Steyert, W.A. Jr. and Overton, W.C. Jr.},
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 = {1980},
month = {10}
}