Dual-sound-wave eddy wax-preventing and viscosity-reducing device

Abstract

The invention relates to oil production auxiliary devices, in particular to a dual-sound-wave eddy wax-preventing and viscosity-reducing device. The dual-sound-wave eddy wax-preventing and viscosity-reducing device is formed by connecting a jet-flow ultrasonic oscillation portion and an eddy flow guiding and jetting portion in a butted mode, wherein a cavitation chamber is arranged between the jet-flow ultrasonic oscillation portion and the eddy flow guiding and jetting portion. The dual-sound-wave eddy wax-preventing and viscosity-reducing device is characterized in that the jet-flow ultrasonic oscillation portion is composed of two stages of jet-flow ultrasonic oscillators which are arranged with the spacing distance of 200+ / -50 mm, and the jet-flow ultrasonic oscillators are installed in a cylindrical shell together, the oscillatory wave frequency of the first stage of jet-flow ultrasonic oscillator ranges from 4000 HZ to 25000 HZ, and the oscillatory wave frequency of the second stage of jet-flow ultrasonic oscillator ranges from 8000 HZ to 50000 HZ. The jet-flow ultrasonic oscillator of each stage is provided with a jet nozzle, wherein a wedged through hole is formed in the middle of each jet nozzle, a support extending outwards is designed to be arranged at the small-opening end of each jet nozzle, and an oscillating elastic piece is installed on each support. According to the dual-sound-wave eddy wax-preventing and viscosity-reducing device, the problems that blocking can easily happen due to high wax content, viscosity of crude oil is large, and crude oil is poor in liquidity are solved better, yield of pumped oil is greatly increased, and the device is widely applicable to oil production of oil wells different in type, wax content and water content.

Description

technical field [0001] The invention relates to an auxiliary device for oil exploitation, in particular to a dual-sonic eddy current wax-preventing viscosity reducer used for downhole oil pumping. Background technique [0002] In the existing oilfields in my country, more than 80% of the medium-high waxy oil wells with a waxy ratio of crude oil of 10-40% are more than 80%. The scaling and clogging of the upper and lower parts of the pipe and the oil well pump will increase the useless power consumption of the oil well pump, reduce the oil output, and even completely block the wellbore and cause production stoppage. Therefore, how to solve the long-standing problem of paraffin crystal plugging, which is a headache for all oilfields, how to prevent wax, reduce viscosity, and increase the fluidity of crude oil in the wellbore, thereby increasing oil well production and improving resource recovery. It is a major scientific research topic that is extremely challenging and has uni...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing ultra-strong anti-wax viscosity reducer and oil booster cannot adapt to oil wells with a wax content above 25%, and to provide a dual-sonic eddy current anti-wax viscosity reducer

Images