发明名称 |
BOREHOLE LOGGING APPARATUS FOR DEEP WELL DRILLINGS WITH A DEVICE FOR TRANSMITTING BOREHOLE MEASUREMENT DATA |
摘要 |
In a borehole logging apparatus (1) for deep well drillings having a device for transmitting measured data obtained while drilling from a borehole through the drilling fluid to the earth's surface, there is arranged in the upper end of a housing (2) a signal transmitter (13) comprising a beaker-shaped rotor (24) and a stator sleeve (25) surrounding said rotor. Fluid impinges on the signal transmitter (13) through a central feed pipe (15) surrounded by an exchangeable bypass ring (14) to which the complete current of drilling fluid is routed through a filter pipe (3) and through which part of the drilling fluid current is routed back into the drill string (6). From a set of bypass rings (14) of different bypass cross sections it is possible to select one suited for the particular on-site conditions and insert it into the logging apparatus (1) in order to obtain a significant signal through the signal transmitter (13).
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申请公布号 |
CA2315981(A1) |
申请公布日期 |
2001.02.19 |
申请号 |
CA20002315981 |
申请日期 |
2000.08.14 |
申请人 |
BECFIELD DRILLING SERVICES GMBH |
发明人 |
WINNACKER, HELMUT |
分类号 |
E21B47/18;(IPC1-7):E21B47/12;G01V1/40 |
主分类号 |
E21B47/18 |
代理机构 |
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代理人 |
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主权项 |
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