Abstract: The present invention provides a multi-phase controlled multi-well pumping unit and relates to an oil exploitation device. The multi-phase controlled multi-well pumping unit includes: a power part, where include a rotating shaft; a crank part, where the crank part includes two crank mechanisms, and a power output part, where the power output part includes a plurality of flexible-power-rope guide components. The pumping unit drives the dual cranks by two ends of the rotating shaft to serve as a power source, and the dual-crank power output mechanism leads out a plurality of groups of flexible power ropes to drive, by using the uniformly distributed guide components, a plurality of pumping wells to operate. Such practice can effectively reduce energy consumption of the multi-well pumping unit system and further improve efficiency.

Abstract: A pumping system is described comprising a bracket being vertically fixed onto the connection end of a pump basement and also connected to a wellhead in order to support multiple fixed pulleys fixed on the same plane as the top end of the bracket), an electric motor and a speed reducer also successively being fixed to a lower end of the bracket. The end head of an output shaft of a speed reducer is connected by means of a crank whose top end head is connected with a movable pulley that is on the same plane as the fixed pulleys. A flexible cable vertically hung in the center of the wellhead is successively wound across the fixed pulleys and the movable pulley and then is locked onto the pump basement. The flexible cable is downwardly connected to a plunger element of an upper wellhead canned pump and also to a plunger element of a downhole oil well pump.

Abstract: A pumping system is described comprising a bracket being vertically fixed onto the connection end of a pump basement and also connected to a wellhead in order to support multiple fixed pulleys fixed on the same plane as the top end of the bracket), an electric motor and a speed reducer also successively being fixed to a lower end of the bracket. The end head of an output shaft of a speed reducer is connected by means of a crank whose top end head is connected with a movable pulley that is on the same plane as the fixed pulleys. A flexible cable vertically hung in the center of the wellhead is successively wound across the fixed pulleys and the movable pulley and then is locked onto the pump basement. The flexible cable is downwardly connected to a plunger element of an upper wellhead canned pump and also to a plunger element of a downhole oil well pump.