Direct-drive type ground screw pump oil production device and operating method thereof

Abstract

The invention discloses a direct-drive type ground screw pump oil production device and an operating method thereof. The direct-drive type ground screw pump oil production device comprises two supporting frames which are of the same structure and are welded to each other. A first motor is installed on the top of each supporting frame. A dual-row toothed chain wheel is installed at one end of an output shaft of each first motor. The dual-row toothed chain wheels are in transmission connection with a first chain wheel and a second chain wheel through chains. The first chain wheel sleeves a firstchain wheel shaft, and the second chain wheel sleeves a second chain wheel shaft. The two ends of the first chain wheel shaft and the two ends of the second chain wheel shaft are each sleeved with anupper chain wheel. Through foundation supporting plates on the two sides of the two supporting frames, during well mouth excavation and oil production, the two supporting frames can be fixed to the ground, the shaking situation of the supporting frames caused by the vibration generated by a spiral auger during well mouth excavation and the vibration generated by shell oil pumping during oil production is effectively avoided, and the technical problems that an oil production device cannot meet the excavation requirement of an oil well and meanwhile the shaking of the supporting frames can be caused during oil production in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of oil extraction, in particular to a direct-drive surface screw pump oil extraction device and an operating method thereof. Background technique [0002] At present, in the field of oil field mechanical oil recovery, the direct driving device of the screw pump motor is a widely used oil pumping device. [0003] The patent document (CN201710230436.3) discloses a surface direct-drive oil production device of a screw pump, which achieves the purpose of reducing the number of parts, simplifying the equipment structure, and reducing the cost of the equipment by optimizing the structure of the prior art, but the screw pump The oil production device does not have the function of oil well production. Simultaneously, in the prior art, oil well exploitation is accomplished by the spiral jiglong, and when faced with geologically hard land oil well exploitation, the helix jiaolong needs a stronger impact force to comp...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a direct-drive surface screw pump oil extraction device and its operation method, to solve the following technical problems: (1) By setting two support frames, one is provided with a spiral dragon, and the other is provided with a spiral dragon. A screw pump is installed so that the oil production device can satisfy the wellhead excavation while satisfying oil production. The two support frames can slide on the rails, which is convenient for direct oil production after the spiral Jiaolong wellhead is excavated. The two support frames are fixed on the block The telescopic cylinder piston rod shrinks, and then the lifting bar drives the lifting rod down, and the lifting rod drives the foundation support plate to press down on the ground to fix the support frame. The foundation support plates on both sides of the two support frames are set so that the During wellhead excavation and oil production, the two support frames can be fixed on the ground, which can effectively prevent the vibration generated by the spiral dragon during wellhead excavation and the vibration of the shell pumping during oil production, which will cause the support frame to shake, and solve the problem in the prior art. The oil production device does not satisfy the excavation of the oil well, and at the same time, the technical problem of shaking the support frame will be caused during oil production; (2) The output shaft of the first motor on the support frame drives the double-row toothed sprocket to rotate, and the double-row toothed sprocket passes through the chain. Drive the first sprocket and the second sprocket to rotate, the first sprocket drives the first sprocket shaft to rotate, the second sprocket drives the second sprocket shaft to rotate, the first sprocket shaft and the second sprocket shaft drive the upper sprocket to rotate, and the upper The sprocket cooperates with the lower sprocket to drive the spiral dragon and the shell to lift. Through this setting, the spiral dragon and the shell can be lifted and lowered automatically, which is convenient for the exploitation of the wellhead and oil extraction. It has strong practicability. The output shaft of the drive motor drives one of the first shafts. Rotate, the two first shafts rotate through gears, the first shaft drives the first connecting rod to rotate, the first connecting rod cooperates with the second connecting rod to rotate, the second connecting rod cooperates with the third connecting rod to rotate, the third connecting rod Drive the lifting frame down, the output shaft of the second motor drives the spiral dragon to rotate, and the spiral dragon drills holes on the ground. Through this setting, the spiral dragon descends while the cooperation of the first connecting rod, the second connecting rod, and the third connecting rod drives, increasing the spiral The impact force of Jiaolong’s downward mining solves the technical problem that the existing technology cannot adapt to hard land mining when the oil well is excavated; (3) The well fluid enters the inner space of the tubing joint by the downhole pressure, and then the well fluid enters the transmission joint. The output shaft of the screw pump drives the screw to rotate, the screw drives the flexible shaft to rotate, the flexible shaft drives the transmission joint to rotate, and the screw cooperates with the stator to transport the oil to the oil outlet chamber to complete the oil collection , to solve the technical problems in the prior art that the outer casing has poor passability in complex wellbores and serious eccentric wear

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