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    • 2. 发明授权
    • Hydraulically actuated downhole pump with gas lock prevention
    • 液压致动井下泵防止气锁
    • US08303272B2
    • 2012-11-06
    • US12402316
    • 2009-03-11
    • Toby PughJohn KelleherClark Robison
    • Toby PughJohn KelleherClark Robison
    • F04B17/00
    • E21B43/129F04B47/08F04B53/10
    • A hydraulic pump avoids problems with gas lock found in conventional pumps. The pump draws in production fluid in a lower pump volume during the pump's upstroke and diverts the produced fluid to an upper pump volume during the downstroke. Spent power fluid is communicated to the upper pump volume during the pump's upstroke. The pump piston in the upstroke expels the entire volume via a check valve that communicates the upper pump volume with a discharge outlet. The check valve increasing the discharge pressure of the upper pump volume, the upper pump volume of the spent power fluid being greater than the upper pump volume, and the upper pump piston compressing produced gas in the upper pump volume all combine to prevent or reduce the chances that the pump will gas lock during operation.
    • 液压泵避免了常规泵中发现的气锁问题。 在泵的上行期间,泵在较低的泵体积中吸入生产流体,并且在下行程期间将所产生的流体转移到上泵体积。 在泵上行期间,耗油量与上泵体积相通。 上行程中的泵活塞通过将上泵体积与排放口连通的止回阀排出整个体积。 止回阀增加上泵体积的排出压力,废动力流体的上泵体积大于上泵体积,并且上泵泵容积中的上泵活塞压缩产生的气体都结合起来以防止或减少 在运行期间泵将气体锁定的机会。
    • 3. 发明申请
    • Hydraulically Actuated Downhole Pump with Gas Lock Prevention
    • 液压驱动井下泵防止气锁
    • US20100230091A1
    • 2010-09-16
    • US12402316
    • 2009-03-11
    • Toby PughJohn KelleherClark Robison
    • Toby PughJohn KelleherClark Robison
    • E21B43/00F04B47/08
    • E21B43/129F04B47/08F04B53/10
    • A hydraulic pump avoids problems with gas lock found in conventional pumps. The pump draws in production fluid in a lower pump volume during the pump's upstroke and diverts the produced fluid to an upper pump volume during the downstroke. Spent power fluid is communicated to the upper pump volume during the pump's upstroke. The pump piston in the upstroke expels the entire volume via a check valve that communicates the upper pump volume with a discharge outlet. The check valve increasing the discharge pressure of the upper pump volume, the upper pump volume of the spent power fluid being greater than the upper pump volume, and the upper pump piston compressing produced gas in the upper pump volume all combine to prevent or reduce the chances that the pump will gas lock during operation.
    • 液压泵避免了常规泵中发现的气锁问题。 在泵的上行期间,泵在较低的泵体积中吸入生产流体,并且在下行程期间将所产生的流体转移到上泵体积。 在泵上行期间,耗油量与上泵体积相通。 上行程中的泵活塞通过将上泵体积与排放口连通的止回阀排出整个体积。 止回阀增加上泵体积的排出压力,废动力流体的上泵体积大于上泵体积,并且上泵泵容积中的上泵活塞压缩产生的气体都结合起来以防止或减少 在运行期间泵将气体锁定的机会。
    • 8. 发明申请
    • Power discriminating systems
    • 电力鉴别系统
    • US20050035827A1
    • 2005-02-17
    • US10941406
    • 2004-09-15
    • Clark RobisonNeal SkinnerJohn GoiffonCharles Pool
    • Clark RobisonNeal SkinnerJohn GoiffonCharles Pool
    • H02J3/02H03H7/01
    • H02J3/02Y10T307/25
    • The present invention relates to a control system for selectively supplying electrical power in a remote environment. The system comprises a plurality of electrical circuits, each designed to operate over a unique frequency passband. Power transmitted within the frequency passband of a circuit is filtered through that circuit to power a corresponding remote device. One or more remote devices can be simultaneously powered by transmitting power within the frequency passbands of the corresponding circuits. It is advantageous to design relatively narrow passbands to accommodate a relatively large number of circuits and corresponding devices for remote operation and a triac, rectifier or other suitable turn-on gate can be incorporated into each circuit to effectively control the width of the frequency passband of each circuit. Alternatively, an operational amplifier could be used.
    • 本发明涉及一种用于在远程环境中选择性地供电的控制系统。 该系统包括多个电路,每个电路被设计成在唯一的频率通带上工作。 在电路的频率通带内传输的功率通过该电路进行滤波,以对相应的远程设备供电。 一个或多个远程设备可以通过在相应电路的频率通带内发送功率来同时供电。 设计相对窄的通带以容纳相对大量的电路和用于远程操作的相应装置是有利的,并且可以将三端双向可控硅开关元件,整流器或其它合适的导通栅极并入每个电路中以有效地控制频率通带的宽度 每个电路。 或者,可以使用运算放大器。