发明名称 |
DISPOSITIVO PER MISURARE IL CARICO DI PESO SU UNA PUNTA DI TRIVELLAZIONE DURANTE IL FUNZIONAMENTO |
摘要 |
<p>A measuring device is provided for measuring the weight applied to a drilling bit or like device in a borehole while the drilling is taking place. The measuring apparatus has a tubular housing adapted to be coupled into a drill string preferably immediately above the drill bit. A transducer is mounted in the tubular housing and measures pressure in a captive fluid chamber within the housing which can be correlated to weight on the measuring apparatus and in turn on the drill bit.</p> |
申请公布号 |
IT1144535(B) |
申请公布日期 |
1986.10.29 |
申请号 |
IT19810049900 |
申请日期 |
1981.12.14 |
申请人 |
DRESSER INDUSTRIES INC |
发明人 |
CLAYCOMB JACKSON REYNOLDS |
分类号 |
E21B44/00;E21B47/00;G01L5/00;G08C25/00;(IPC1-7):G01L/ |
主分类号 |
E21B44/00 |
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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