Device for removing paraffin and washing well by gas heat carrier

Abstract

The invention provides a device for removing paraffin and washing well. The device comprises a high-temperature gas generator, and an air compressor, a high-pressure fuel injection pump, a gas analysis system, a high-pressure fuel injection pump, a gasification water injection pump and a cooling water pump which are controlled by a controller, wherein the high-temperature gas generator comprises a cylinder block, a cooling water tank, an air-fuel mixer, a compressed air inlet, a cooling water inlet, a cooling water outlet, an igniter, a combustion chamber, a gasification blending chamber, a gasification water injection inlet and a high-temperature gas spout formed at the lower end of the gasification blending chamber. The device has the advantages of capability of burning diesel oil and accompanying natural gas generated by burning oil wells directly, environmental protection, energy conservation, low operation cost, convenient fuel sources, small volume, light weight, flexibility andconvenience, and excellent application prospect in the aspects of paraffin removal and dirt washing of the oil wells.

Description

Technical field: [0001] The invention provides a well flushing device for removing wax deposits and scaling in oil production well pipes. Background technique: [0002] In the process of oil exploitation, wax and scale often form in the production well pipe, which gradually reduces the inner diameter of the oil pipe, affects the oil production efficiency, and reduces the well fluid output; at the same time, the pressure in the oil pipe increases, which increases the load of the oil pump and shortens the service life of the oil pump. The existing wax removal technology mainly adopts mechanical wax removal and thermal wax removal. Mechanical wax removal is not thorough and affects oil well production. Thermal wax removal generally uses a boiler to heat the heat carrier, such as hot oil, hot water, etc., to bring heat energy into the wellbore, increase the temperature of the wellbore, and make it exceed the melting point of the wax, so that the wax can be melted to achieve the ...

AI Technical Summary

Problems solved by technology

The cost of using cooked oil as a heat carrier is too high

Using boilers to generate hot water to inject downholes has the disadvantages of low thermal efficiency and the use of a large amount of well washing fluid, which may cause damage to sensitive oil layers; this method requires large equipment, high energy consumption, low efficiency, and large emission pollution; compared with well pressure Oil wells with high wax content are difficult to operate; for oil wells with high wax content and heavy oil wells, it is more difficult to remove wax and scale

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