Downhole hydraulic sonic inlet screen and lift string

A hydraulic and liquid feeding technology, applied in drilling pipes, casings, drilling equipment, etc., can solve the problems of high cost, easy pollution to the environment, not meeting the target requirements of green production in oil fields, etc. Effect
CN112081549BActive Publication Date: 2022-07-05PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2022-07-05

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Abstract

The invention discloses a downhole hydraulic acoustic wave liquid inlet screen and a lifting pipe string, which belong to the technical field of mechanical oil production. The downhole hydraulic acoustic wave liquid inlet screen comprises a plurality of hydraulic acoustic wave generators (1) connected end to end, because each hydraulic acoustic wave generator (1) can not only use the pressurized liquid to spray onto the spring plate (13) The generated oscillating acoustic wave processes the formation fluid entering the hydroacoustic wave generator (1), and the hydroacoustic wave generator (1) from the lower part of the hydroacoustic wave generator (1) can enter the hydroacoustic wave generator (1) The pooled solution was also processed. Because the oscillating sound wave can not only make the liquid particles vibrate violently, destroy the network structure of wax crystals in the liquid, but also emulsify the liquid, accelerate the dissolution of the solute, and reduce the viscosity of the liquid, so the formation fluid before entering the oil pump can be To achieve wax prevention and viscosity reduction treatment, effectively improve the flow rate of the oil pump inlet.
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Description

technical field

[0001] The invention relates to the technical field of mechanical oil recovery, in particular to a downhole hydraulic acoustic wave liquid inlet screen and a lift string. Background technique

[0002] Since the crude oil contained in the formation fluid itself is viscous and contains wax molecules, during the continuous lifting process of the oil well, wax is easy to form on the pipe wall of the lifting string, which makes the liquid inlet of the oil pump overflow. The cross-sectional area is small and easy to be blocked, which in turn leads to a slow flow rate of the liquid inlet of the oil well pump, which seriously affects the lifting efficiency of the pipe string.

[0003] At present, most of the existing technologies adopt the method of adding chemicals, by injecting wax remover and viscosity reducing agent into the oil well at the wellhead, so as to prevent wax and reduce viscosity of the lifting string and increase the flow rate of the liquid inlet of ...

Claims

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