发明名称 |
Rotary Servo Pulser and Method of Using the Same |
摘要 |
<p>A servo pulser used to actuate a pulser valve and create pressure pulses in downhole measurement while drilling tools is described. An electric gearmotor is used to rotate a shaft which in turn operates a servo valve. A facing portion of the shaft is compressed onto the face of a servo seat having passages connected to the inside of a drill collar and the rotating action is used to open and/or obstruct a fluid path through those passages. The shaft may include wear-resistant tips to obstruct the fluid path. Part of the torque-transmitting apparatus between the gearmotor and the shaft can be hydrostatically compensated, and part sealed against the operating environment. A magnetic torque coupler may be used as part of the torquetransmitting apparatus between the gearmotor and the shaft.</p> |
申请公布号 |
GB2523489(A) |
申请公布日期 |
2015.08.26 |
申请号 |
GB20150008422 |
申请日期 |
2013.11.07 |
申请人 |
RIME DOWNHOLE TECHNOLOGIES LLC |
发明人 |
MANOJ GOPALAN;ROBERT WEBER |
分类号 |
E21B47/18 |
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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地址 |
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