Water-based double-hydraulic drive discharge and mining system

Abstract

The invention discloses a water-based double-hydraulic drive discharge and mining system, which comprises a reverse double-piston ground drive pump unit, a flexible tube and hard tube double-tube water-based power transmission unit, a two-sided piston power applying unit and a rod pump unit used for oil pumping and discharge and mining; the flexible tube and hard tube double-tube water-based power transmission unit comprises a flexible tube and a hard tube; the flexible tube is attached to the hard tube and goes deep into an oil tube and a casing under the shaft; the reverse double-piston ground drive pump unit is equipped so as to apply suction to the hard tube while applying pressure to the flexible tube or apply pressure to the hard tube while applying suction to the flexible tube; the upper side of the two-sided piston power applying unit is connected with the flexible tube, and the lower side of the two-sided piston power applying unit is connected with the hard tube; and the rod pump unit used for oil pumping and discharge and mining is in linkage with the two-sided piston power applying unit.

Description

Technical field [0001] The invention belongs to the technical field of oil exploitation, coalbed methane and shale gas exploitation, and specifically relates to a water-based dual hydraulic drive drainage system, which can completely solve the problem of pumping oil when conventional beam pumping systems are used in inclined wells. The eccentric wear of the rod tube. Background technique [0002] Currently, the source of energy is mainly obtained through oil extraction. In recent years, the exploitation of coal-bed methane and shale gas has brought dawn to mankind who is in short supply of energy. [0003] However, the existing mining system uses sucker rods, conventional walking beams, and downhole power devices. When encountering oilfield pumping, coalbed methane and shale gas extraction from inclined wells, the use of reciprocating sucker rods will cause eccentric wear of sucker rods and tubing, reducing service life and increasing workover. The number of times has increased ...

AI Technical Summary

Problems solved by technology

[0006] Because the present invention does not need to use reciprocating sucker rods, it can completely solve the problem of eccentric wear of the sucker rod tubes when the conventional beam pumping system is used in inclined wells, increase the service life, reduce the number of workovers, and greatly reduce the The cost of drainage is reduced, and the economic benefit is remarkable; because there is no need to use conventional beams, it is small in size, small in floor space, low in cost, simple in structure, and easy to operate; the flexible pipe is attached to the hard pipe and penetrates into the downhole tubing, overcoming It overcomes the disadvantage that the double hard pipes cannot be lowered, and the installation is easy; because the present invention can drive the pump rod to move up and down reciprocatingly only through the suction and pressure of the soft and hard pipes, so as to realize the lifting of the downhole liquid, so no downhole power is needed, and There is no need for electric seals; when the reverse dual-piston surface-driven pump unit is configured to apply pressure to the hose while applying suction to the hard pipe, the double-sided piston power-actuated unit drives the suction and row rod pump unit downward, when The reverse dual-piston ground-driven pump unit is configured to apply suction to the hose while applying pressure to the hard pipe. The double-sided piston power implementation unit drives the pump unit to move upward for the pumping and row rod pumps, so it can realize stepless parameter adjustment, Has a very good promotion value

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