ACTIVATION MECHANISM FOR A DOWNHOLE TOOL AND A METHOD THEREOF |
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| 申请号 | EP14885128 | 申请日 | 2014-12-18 | 公开(公告)号 | EP3117074A4 | 公开(公告)日 | 2017-11-22 |
| 申请人 | ADVANCETECH APS; | 发明人 | SOLEM SIGURD; | ||||
| 摘要 | An activation method and a mechanism in which a pressure or flow sensor senses the pressure or flow rate of the treatment fluid being pumped through the drill string. A controller powered by a power source monitors the sensed pressure or flow rate within a first time window and via a suitable activator activates a first downhole tool or operation mode thereof if the sensed pressure or flow rate is stable with that time window. The controller monitors the sensed pressure or flow rate within a second time window and activates a second downhole tool or second operation mode of the first downhole tool if the sensed pressure or flow rate is stable with that time window. In one embodiment, the sensed pressure is combined with a rotation sensor sensing the rotation of the drill string. The controller logs the starting time for the pumping and the rotation. | ||||||
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| 说明书全文 | |||||||
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