A well washing and wax removal vehicle and wax removal method thereof

Abstract

The invention relates to a well washing and wax removal vehicle and a wax removal method thereof. Heating system, combustion system, control system and LNG gas recovery system; the LNG gas tank is connected to the vaporization heating system through a first-stage pressure reducing valve; the vaporization heating system is connected to the combustion system; the exhaust gas collection device is used to collect the exhaust gas of the vehicle body , and connected with the vaporization heating system; the exhaust gas collection device includes a motor, a frequency converter, and an air pump; the control system includes: an operation display panel, a control module, a temperature sensor, a pressure sensor, a liquid level sensor, and an alarm device. The device has a reasonable structural design and can make full use of the exhaust system to heat the LNG fuel with the released heat to ensure complete vaporization of the LNG fuel. It also has the advantages of low production cost and greatly reduced labor intensity.

Description

technical field [0001] The invention relates to the technical field of a well washing and wax removal vehicle used in oil extraction operations in the petroleum industry, in particular to a well washing and wax removal vehicle and a wax removal method thereof. The wax removal vehicle uses LNG fuel, which not only has a reasonable structural design, but also can greatly reduce manual labor. Strength, but also has the advantages of energy saving and environmental protection. Background technique [0002] In the process of crude oil extraction, with the continuous increase of oil wells, the continuous increase of workload, the change of oil quality and the aging of equipment, wax deposition is becoming more and more serious, hindering the flow of crude oil and affecting the oil yield of oil wells; The demand for wax equipment is also increasing, and the cost is also increasing, and the existing well washing and wax removal equipment of oil wells are increasingly unable to meet ...

AI Technical Summary

Problems solved by technology

[0002] In the process of crude oil extraction, with the continuous increase of oil wells, the continuous increase of workload, the change of oil quality and the aging of equipment, wax deposition is becoming more and more serious, hindering the flow of crude oil and affecting the oil yield of oil wells; The demand for wax equipment is also increasing, and the cost is also increasing, and the existing well washing and wax removal equipment of oil wells are increasingly unable to meet the needs of crude oil production

[0003] The traditional method of flushing and removing wax is to inject a large amount of hot water into the well. However, with this method, on the one hand, the temperature of the hot water is low, the heating time is long, and the cost is high. On the other hand, it not only causes environmental pollution, but also the oil well is almost Normal production cannot be done within a day, and the pumping unit is doing useless work

Some of the existing well washing and wax removal vehicles in China use fuel oil as the combustion medium, which has the following disadvantages: preheating time, large consumption, high cost, black smoke generated during combustion, which pollutes the environment, etc.

Therefore, there is an urgent need for a clean and environmentally friendly well washing and wax removal vehicle. The LNG well washing and wax removal vehicle has a short warm-up time, less consumption, low cost, and does not produce black smoke when burning, which is very environmentally friendly and can realize automatic control of the temperature in the boiler system. Constant adjustment to ensure the safe and automatic operation of the system, but LNG fuel needs to be vaporized and then burned, but the engine water cannot provide enough heat for vaporization, so LNG needs to be pretreated to make it vaporize successfully

At the same time, the operation is still manual operation, and the over-temperature, over-pressure, oil shortage, water shortage and other states in the operation process all rely on manual observation and judgment, which has defects such as high labor intensity and potential safety hazards.

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