Invention Grant
US08651174B2 Method and apparatus for dropping a pump down plug or ball 有权
用于下降塞子或球的方法和装置

Method and apparatus for dropping a pump down plug or ball
Abstract:
An improved method and apparatus for dropping a ball, plug or dart during oil and gas well operations (e.g., cementing operations) employs a specially configured tool body assembly having valving members (e.g., safety or kelly valves) and valving members holding plugs, balls, or darts to be dropped. A transmitter (or transceiver) provides an ability to generate a wireless signal that is received by receivers (or transceivers) on the tool body assembly. Each receiver (or transceiver) controls an electrical actuator that engages a valving member. Wireless signals can be used to open or close a selected valving member.
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