发明名称 Apparatus and method to detect actuation of a flow control device
摘要 An apparatus for use in a wellbore comprises a flow control device having an open position, a closed position, and at least one intermediate position. The apparatus further comprises a chamber and a movable member for actuating the flow control device, where the movable member is movable inside the chamber. The movable member causes a characteristic in the chamber to change in response to movement of the movable member to actuate the flow control device. A sensor detects the change in the characteristic inside the chamber that is indicative of actuation of the flow control device.
申请公布号 US7347275(B2) 申请公布日期 2008.03.25
申请号 US20050160211 申请日期 2005.06.14
申请人 SCHLUMBERGER TECHNOLOGY CORPORATION 发明人 FONTENOT ROBERT J.;ROSS DONALD W.;ARENA MICHELE
分类号 E21B34/16;E21B;E21B34/06;E21B43/00;E21B47/09;G05D7/00 主分类号 E21B34/16
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