Water and gas double-base driving discharge and mining system

Abstract

The invention discloses a water and gas double-base driving discharge and mining system. A first piston of a ground driving pump unit is connected with a hard water pipe to apply suction force or pressure to the hard water pipe. A second piston of the ground driving pump unit is connected with a capillary gas pipe which is connected with a gas pressure buffering tank. The upper side of a double-side piston power implementation unit communicates with the hard water pipe, and the lower side of the double-side piston power implementation unit communicates with the capillary gas pipe. An oil drawing and discharge and mining rod pump unit is in linkage with the double-side piston power implementation unit. When the ground driving pump unit is used for applying pressure to the hard water pipe, the double-side piston power implementation unit drives the oil drawing and discharge and mining rod pump unit to move downwards. When the ground driving pump unit is used for applying suction force to the hard water pipe, the gas pressure buffering tank is used for keeping relative constant pressure when the first piston moves upwards and a cylinder piston of the double-side piston power implementation unit is lifted upwards, so that the oil drawing and discharge and mining rod pump unit is driven to move upwards.

Description

technical field [0001] The invention belongs to the technical field of oil exploitation, coalbed methane and shale gas exploitation, and in particular relates to a water-gas double-base driven drainage system, which can solve the problem of sucker rod tube failure when conventional beam pumping systems are used in inclined wells. Partial wear problem. Background technique [0002] At present, the source of energy is mainly obtained through oil extraction. In recent years, the exploitation of coalbed methane and shale gas has brought hope to human beings who are short of energy. [0003] However, existing mining systems use sucker rods, conventional beams, and downhole power units. When encountering the situation of inclined well pumping in oil fields, coal bed methane and shale gas drainage, the use of reciprocating sucker rods will cause eccentric wear of the sucker rods and tubing, reducing the service life and increasing the workover The number of times increases the d...

AI Technical Summary

Problems solved by technology

[0003] However, existing mining systems use sucker rods, conventional beams, downhole power

When encountering the situation of inclined well pumping in oil fields, coal bed methane and shale gas drainage, the use of reciprocating sucker rods will cause eccentric wear of the sucker rods and tubing, reducing the service life and increasing the workover The number of times increases the drainage cost

Due to the use of the conventional beam system, the volume is large, the floor area is large, the cost is increased, the structure is complicated, and the operation is cumbersome

Other rodless drainage systems, such as downhole power devices such as linear motors or electric submersible pumps, are complicated to install and require electrical sealing, which greatly increases the cost and shortens the service life

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