An oil well desanding device based on pulse jet technology and cyclone separation mechanism

Abstract

The invention belongs to the field of oil well drilling and workover development, and particularly relates to an oil well sand removal device based on a pulsed jet technology and a hydrocyclone separation mechanism. The main structures of the oil well sand removal device include a pulsed jet sand pumping system, a ground buffer system, a three-phase hydrocyclone deaeration and sand removal system,a connecting pipeline, a control system and a power system. A jet pump is adopted to change traditional hydraulic sand washing into hydraulic sand suction, during the downhole sand removal operation,working fluid enters the jet pump at a high speed from a working fluid inlet pipe and passes through a throat pipe of the jet pump at a high speed, a low pressure area in which the pressure is lowerthan the pressure in a well is formed inside the throat pipe, so that mixed fluid mixed up with a large amount of sand is sucked into the jet pump, and high-speed fluid does not carry part of oil gas,sand and the like to rush into an oil reservoir to damage the formation structure and affect the exploitation of petroleum and the like; and the system can realize the intelligent control over a whole sand removal system, greatly reduces the labor intensity of workers and improves the sand removal efficiency of a downhole and the yield of an oil well.

Description

Technical field: [0001] The invention belongs to the field of oil well drilling and workover development, and specifically relates to an oil well desanding device based on pulse jet technology and a cyclone separation mechanism. The system includes three cyclone degassing and desanding systems, and does not need to vent the wellhead during operation. Greatly improved the efficiency of drilling and workover. Background technique: [0002] During the construction and exploitation of wellheads such as oil wells, solid particles (sand) will inevitably be produced. If the sand is not cleaned up in time, it will cause wellbore blockage, etc., which will lead to production reduction or even shutdown of oil and gas wells. In response to this problem, many experts and scholars have studied several sand removal methods for this problem. Generally, it can be divided into two methods: hydraulic sand washing and mechanical sand removal. However, these sand removal and sand removal proc...

AI Technical Summary

Problems solved by technology

These two kinds of sand fishing operations can remove the sand in the oil and gas wells to a certain extent, and the sand fishing efficiency is high. However, in actual operation, the wellhead needs to be emptied and the sand fishing equipment should be put into the wellhead for operation, which is not conducive to the continuous operation of the oil well. Enhanced production and production of oil and gas fields

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