| 摘要 |
A plunger lift apparatus includes wellhead equipment containing a receiver, a conduit extending from the wellhead equipment into a wellbore, and a plunger to be r un through the conduit to a downhole location in the wellbore. The plunger includes at leas t a sensor to measure a downhole parameter, and a plunger is adapted to communicate the measured downhole parameter to the receiver.
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