发明名称 Method and system of monitoring rotational time of rotatable equipment
摘要 Method and system for monitoring rotational time of a rotatable equipment. At least some of the illustrative embodiments are methods comprising powering a sensor coupled to a rotatable equipment, the powering by a self-contained electronic system integral to the rotatable equipment monitoring rotational time of the rotatable equipment by way of the sensor, and providing a report of rotational time of the rotatable equipment upon request.
申请公布号 GB2469600(B) 申请公布日期 2011.11.09
申请号 GB20100012994 申请日期 2009.02.03
申请人 NATIONAL OILWELL VARCO, L.P. 发明人 JONATHAN RYAN PRILL;MICHAEL X TANG
分类号 E21B45/00;E21B4/02;E21B7/00;E21B21/08 主分类号 E21B45/00
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