Rodless pump hydraulic wax remover wellhead putting and recycling device

Abstract

The invention provides a rodless pump hydraulic wax remover wellhead putting and recycling device, and mainly aims at putting and recycling a rodless pump oil extraction well hydraulic and automatic wax removing device at a wellhead. The device is characterized by comprising the structures of an upper portion and a lower portion, the upper portion is a hydraulic cylinder, the lower portion is a wax remover recycling unit, and a telescopic hydraulic cylinder is used for pushing a hydraulic wax remover to move downwards; the hydraulic cylinder is connected with the remover recycling unit at thelower portion through a flange type cylinder, and the wax remover recycling unit is mainly composed of a retracting cylinder, a sliding pipe, a sliding ring, a spring pin and the like, wherein a railpin penetrates through the sliding ring and is placed in a sliding pipe rail, the unfolded structure of the sliding pipe is two rails with different lengths, under the effect of the hydraulic wax remover, the sliding pipe can move up and down, and the sliding ring is fixed to the primary retracting cylinder through a lower flange; a spring pin structure is composed of the lower flange, a steel ball, a compression spring, a sealing ring and a lateral bolt and is used for clamping the wax remover initially and after the third time of wax removing of the wax remover is finished.

Description

technical field [0001] The invention relates to a wellhead hydraulic wax remover feeding and recovery device, which can be applied to the mechanical wax removal process of oil wells to realize automation. Background technique [0002] At present, the exploitation of various oilfields has entered the middle and later stages, and the output of waxy crude oil has increased rapidly. During the oil production process, the wax dissolved in the crude oil will be precipitated in the form of crystals and adsorbed on the tubing and downhole equipment. The lifting cross-section becomes smaller, which increases the local resistance of the fluid, and also affects the normal operation of oil well equipment, which greatly increases the cost of oil production in the oil field. Nowadays, electric submersible pumps are commonly used in oil fields. With the continuous development of submersible screw pumps and downhole linear motor oil production system technology, the number of rodless pump p...

AI Technical Summary

Problems solved by technology

[0002] At present, the exploitation of various oil fields has entered the middle and later stages, and the output of waxy crude oil has increased rapidly. During the oil production process, the wax dissolved in the crude oil will be precipitated in the form of crystals and adsorbed on the tubing and downhole equipment. The cross-section of the lift becomes smaller, which increases the local resistance of the fluid, and also affects the normal operation of the oil well equipment, which greatly increases the cost of oil production in the oil field

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