发明名称 |
BOREHOLE LOGGING TOOL CRYOSTAT |
摘要 |
<p>BOREHOLE LOGGING TOOL CRYOSTAT A borehole logging tool and cryostat therefor to maintain a semiconductor detector at cryogenic temperatures. The cryostat has an elongate single-phase heat sink of solid, thermally conductive material on which the detector is removably mounted. The other end of the heat sink is arranged to receive a liquid cryogen or the cold finger of a helium refrigerator, which is removed before a logging run; the detector being maintained at cryogenic temperatures during the logging run by absorption and retention of heat in the solid, single-phase heat sink. A rigid tube having similar thermal capacity and similarly pre-cooled to cryogenic temperatures, surrounds but is spaced from the heat sink.</p> |
申请公布号 |
CA1138127(A) |
申请公布日期 |
1982.12.21 |
申请号 |
CA19800354498 |
申请日期 |
1980.06.20 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
JANSSEN, SYLVAIN;TOURRET, JEAN;ZARUDIANSKY, ALAIN |
分类号 |
H01L39/00;E21B36/00;E21B47/01;F17C3/08;F25D3/10;G01T1/24;G01T7/00;G01V5/04;G01V5/12;G12B15/06;H01L23/34;H01L31/00;(IPC1-7):G01V5/12;G01V9/04;01V9/04 |
主分类号 |
H01L39/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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