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    • 21. 发明申请
    • WELL SHUT IN DEVICE
    • 在设备中很好
    • WO2013064658A2
    • 2013-05-10
    • PCT/EP2012071753
    • 2012-11-02
    • WIRELESS MEASUREMENT LTDWILSON JAMESATHERTON ERIC
    • WILSON JAMESATHERTON ERIC
    • E21B34/16E21B34/08G08C17/02G08C2201/20
    • There are certain wellhead emergencies that present a danger in that it is extremely hazardous to approach the well close enough to activate the manual emergency shut in valve. An additional way of actuating the shut-in valve is disclosed, employing a remote handheld radio controller. Thus, we describe a well for extraction of hydrocarbons, and an associated control system, comprising a flow conduit for the hydrocarbons leading from a subsurface region to an above-surface region, a normally-closed shut-in valve located in the subsurface region of the flow conduit, a hydraulic system arranged to cause the shut-in valve to open when the hydraulic system is pressurised, and a release valve for releasing pressure in the hydraulic system, a wireless interface having a unique identifier, and being adapted to open the release valve on receipt of a wireless communication from a remote device, and a plurality of remote devices, each comprising a wireless transmitter compatible with the wireless interface and able to transmit control instructions to the wireless interface, at least one control instruction in any sequence of control instructions issued by the remote device induding the unique identifier, wherein the wireless interface is adapted to ignore control instructions containing an identifier differing from the unique identifier. A pressure sensor is ideally provided in the hydraulic system, to detect the pressure of the hydraulic fluid in the hydraulic system. The wireless interface is preferably adapted to transmit data relating to this detected pressure, allowing users to confirm that the shut-in valve has operated. The plurality of remote devices ideally each include a directional antenna for communicating with the wireless interface, which assists in a number of ways.
    • 有一些井口突发事件存在危险,因为接近足够靠近的井是非常危险的,以激活阀门的手动紧急关闭。 公开了采用远程手持无线电控制器的另一种致动关闭阀的方法。 因此,我们描述了一种用于提取烃的井,以及相关的控制系统,其包括用于从地下区域到上表面区域的烃的流动管道,位于下表面区域的常闭关闭阀 所述流动管道,布置成当所述液压系统被加压时使所述关闭阀打开的液压系统;以及用于释放所述液压系统中的压力的​​释放阀,具有唯一标识符的无线接口,并且适于打开 接收来自远程设备的无线通信的释放阀以及多个远程设备,每个远程设备包括与无线接口兼容的能够向无线接口发送控制指令的无线发射机,至少一个控制指令以任何顺序 由所述远程设备发布的包含所述唯一标识符的控制指令,其中所述无线接口适于忽略控制指令 包含与唯一标识符不同的标识符。 压力传感器理想地设置在液压系统中,以检测液压系统中的液压流体的压力。 无线接口优选地适于发送与该检测到的压力有关的数据,从而允许用户确认关闭阀已经操作。 多个远程设备理想地包括用于与无线接口进行通信的定向天线,这有助于多种方式。
    • 23. 发明申请
    • SIGNALLING METHOD
    • 信号方法
    • WO2006000796A2
    • 2006-01-05
    • PCT/GB2005002502
    • 2005-06-24
    • PLUS DESIGN LTDATHERTON ERIC
    • ATHERTON ERIC
    • E21B47/12G01V11/00H03K7/08H03K9/08H04B3/54H04L1/24H04L25/49
    • H04L1/246E21B47/12G01V11/00H03K7/08H03K9/08H04B3/54H04B2203/5475H04L25/4902Y02A90/342
    • An electrical signalling system comprises a modulator arranged to accept information and encode that information in an alternating signal containing repeated rising and falling edges, the encoding being by way of the time between consecutive rising and falling edges a transmission path for the signal from the modulator to a demodulator, wherein the modulator is arranged to precede a data signal with a reference signal of a known time, and the demodulator is arranged to detect that reference signal and calculate a calibration error therefrom. The demodulator can record the calibration error and subtract this from subsequent data signals. The demodulator can alternatively (or in addition) adjust the threshold for future signals, on the basis of the calibration error. This is particularly suited to inductive transmission paths such as a three-phase electrical supply cable leading to downhole sensors in the oil and gas extraction industries.
    • 一种电信令系统,包括调制器,被配置为接收信息并将信息编码在包含重复的上升沿和下降沿的交替信号中,该编码通过连续上升沿和下降沿之间的时间,来自调制器的信号的传输路径 解调器,其中所述调制器被布置为在数据信号之前具有已知时间的参考信号,并且所述解调器被布置为检测所述参考信号并从其计算校准误差。 解调器可以记录校准误差,并将其从后续数据信号中减去。 另外(或另外)解调器可以根据校准误差来调整未来信号的阈值。 这特别适用于感应传输路径,例如通往油气开采行业的井下传感器的三相供电电缆。