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The rod-type drain is a downhole tool used with the pump. When the oil well is working, the oil pipe and the casing can be connected, and the well fluid in the oil pipe can be leaked into the casing in time, which can effectively avoid pollution to the ground environment during operation.
Mainly composed of body and drain pin.
The oil drainer is installed between the lower coupling of the pump cylinder and the fixed valve, and goes down the well with the oil pump. Pumping will be done first
The oil rod and the oil pump plunger are put forward, and then a headless sucker rod of about 1 meter long Φ19 or Φ22 is put into the oil pipe, and the oil sucking rod falls and impacts the shear pin, and the oil pipe and the casing are connected, and the oil pipe is connected. The well fluid is injected into the casing to achieve the purpose of draining oil.