Mechanical oil recovery

When the energy of the reservoir is insufficient to maintain self-spraying, it is necessary to artificially replenish energy from the ground to lift the crude oil out of the wellhead. If the way to replenish energy is to use mechanical energy to extract oil from the ground, it is called mechanical oil recovery.

Mechanical oil recovery can be divided into gas lift production method and deep well pump production method. At present, domestic and foreign mechanical oil production devices are mainly divided into two types: rod pump and rodless pump. The pole pump ground power equipment drives the pumping unit and drives the deep well pump through the sucker rod. A rodless pump that does not rely on a sucker rod to transmit power to the pumping unit. At present, there are many types of rodless pumps, such as hydraulic piston pumps, electric submersible centrifugal pumps, jet pumps, vibration pumps, and screw pumps. At present, the most widely used is the deep well pumping device of the beam pumping unit. Because the device is reasonable in structure, durable, easy to manage, and has a wide range of applications.