Hybrid workover rig

Abstract

The invention provides a hybrid workover rig which comprises an automobile chassis. The hybrid workover rig further comprises a roller, a supporting leg, a derrick unit, a driving unit, a control unit, a motor for driving the roller to rotate and an energy storage unit connected with the motor, wherein the roller, the supporting leg, the derrick unit, the driving unit, the control unit, the motor and the energy storage unit are installed on the automobile chassis. The driving unit is simultaneously connected with the motor and the energy storage unit. The control unit is simultaneously connected with the driving unit, the energy storage unit and the motor. Dual systems are provided to output power, and the stability and adaptability of the systems are guaranteed. The requirements of equipment for chassis engine power are greatly reduced. Against full-load power output, the chassis output power can be reduced to 50% that of original equipment to the largest extent, the equipment purchase cost is reduced greatly, and oil consumption is also reduced. The motor has a braking function, and through the matching of a suspension state of a large hook, the safety factor of the equipment is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of petroleum workover equipment, and in particular relates to a hybrid power workover machine. Background technique [0002] The work content of the workover rig is to lift out the downhole casing one by one, and then put the next one into the well after dredging. This just requires that the drum rotates and pulls the big hook to run upwards for 10 meters or 20 meters to propose a column casing. Then stop and remove the casing, and the drum rotates in the opposite direction and lowers the enlarged hook to the wellhead to lift the next casing. In this process, only full power and heavy load are required during the lifting process of the big hook. During the stop process, the brake is used to lock the drum, and no power is needed to be provided to it. However, during the lowering process, the gravity does work and the brake is used to control it. . That is to say, in the whole process, power is only require...

AI Technical Summary

Problems solved by technology

Completely relying on the chassis engine as the power source requires the power of the vehicle's base plate engine to meet the full power of the equipment, which wastes equipment investment; in addition, all fuel is used as fuel, and the fuel consumption is high, which wastes fuel; and the equipment is realized by controlling the chassis engine. The start and stop of the machine is not conducive to the optimization of the control system. Most of the working conditions require the manual operation of the operator, and some operations are completely dependent on the operator's experience and the accuracy of the hand feeling, so the requirements for the operator are too high.

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