Downhole jetting device for reducing viscosity of petroleum production

Abstract

The invention relates to the technical field of petroleum, and discloses a downhole jetting device for reducing the viscosity of petroleum production. The downhole jetting device includes a pumping pipe, wherein a feeding pipe is installed on the right side of the pumping pipe, the bottom of the feeding pipe is fixedly connected with a material storage box, the right side of the pumping pipe is fixedly connected with a pneumatic pipe, the pumping pipe is internally and movably connected with a threaded rod, a discharging hole is formed in the outer side of the threaded rod, a fixed shaft is installed in the threaded rod, the threaded rod is internally and fixedly connected with a fixed sleeve, a sliding rod is slidably connected to the side, close to the fixed shaft, of the fixed sleeve, and a pressure spring is installed on the outer side of the sliding rod. A chemical agent is released through the discharging hole formed in the surface of the threaded rod so that petroleum can be fully in contact with the chemical agent for dilution in the process of upward transportation, and thus the viscosity of the petroleum is effectively reduced, and the pipe plugging caused by the insufficient mixing of the petroleum and the chemical agent in the process of oil absorption is prevented.

Description

technical field [0001] The invention relates to the technical field of petroleum, in particular to a downhole injection device for reducing the viscosity of exploited petroleum. Background technique [0002] Petroleum is a viscous, dark brown liquid known as "industrial blood". It is the main energy source in today's society. Petroleum is mainly produced as fuel oil and gasoline, and is also a raw material for many chemical industrial products such as plastics. In technology, oil is mostly exploited through wellbore viscosity reduction technology. Wellbore chemical viscosity reduction technology refers to the technology of extracting heavy oil and high-viscosity oil by adding chemicals to the wellbore fluid to reduce the fluid viscosity. [0003] In the actual extraction process, it is difficult for the downhole injection device of the traditional oil extraction system to fully mix the chemical agent into the oil fluid in the oil extraction pipe, resulting in some oil not mi...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a downhole injection device for reducing the viscosity of exploited petroleum, which has the advantages of fully mixing petroleum and chemical agents and reducing mining costs, and solves the problem that petroleum and chemical agents are not easy to mix evenly high cost problem

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