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 The instruments are operated, and the apparatus withdrawn, the material of the body maintaining the very low temperatures at which the instrument(s) operate for a sufficient period of time at the remote or downhole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
- 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, Jr, W A, and Overton, Jr, W C. Apparatus and method for maintaining low temperatures about an object at a remote location. [Patent application]. United States: N. p., 1980.
Web.
Steyert, Jr, W A, & Overton, Jr, W C. Apparatus and method for maintaining low temperatures about an object at a remote location. [Patent application]. United States.
Steyert, Jr, W A, and Overton, Jr, W C. 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, Jr, W A and Overton, Jr, W 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 = {1980},
month = {10}
}