Hot air valve for wax removal, hot air wax removal system and artificial intelligence wax removal method

Abstract

The invention discloses a hot air valve for wax removal, a hot air wax removal system and an artificial intelligence wax removal method. The hot air valve comprises an upper hoop, an inner pipe, an outer pipe, a sealing gasket, a pulley, a pulley yoke, a lower hoop, a steel wire rope, an upper steel wire rope fastener, piston rings and a lower steel wire rope fastener; the wax removal system comprises the hot air valve, a hot air pipeline, a hot air pipeline valve, an oil discharging pipeline valve, an oil discharging pipeline, a servo motor, an induced draft fan, an annulus, a tee joint, an oil well casing and an oil well pipe; and the method comprises the steps: work of an oil-submerged pump is stopped; the oil discharging pipeline valve is closed; the servo motor is started to lift theouter pipe to enable hot air through holes to be exposed; the induced draft fan is started, and thus the oil well pipe, the hot air valve and the annulus are in a negative pressure state; hot air generated by an air heater is driven into the oil well pipe, and thus the hot air flows in the oil well pipe, the hot air valve and the annulus; after wax removal is completed, an air blower, the induceddraft fan and the hot air pipeline valve are sequentially stopped / closed; the servo motor is started to enable the outer pipe to lower to close the hot air through holes; and the oil discharging pipeline valve is opened, and wax removal work is completed.

Description

technical field [0001] The invention relates to a hot air valve for wax removal, a hot air wax removal system and an artificial intelligence wax removal method, belonging to the technical field of hot air wax removal. Background technique [0002] During the oil production process in the oil field, the oil-containing mixture is produced from the downhole. With the decrease of temperature and pressure and the precipitation of gas, the paraffin dissolved in the crude oil will crystallize and precipitate, and gradually accumulate on the inner wall surface of the oil pipe. Wax deposition on oil well pipe wall has been a difficult technical problem for many years. Existing wax removal methods include chemical method, thermal energy cleaning method, and mechanical wax scraping method. The chemical method uses chemical preparations to suppress wax formation, but the chemical preparations are easy to lose quickly with the liquid, and need to be refilled repeatedly to remove wax. Hi...

AI Technical Summary

Problems solved by technology

Existing wax removal methods include chemical method, thermal energy cleaning method, and mechanical wax scraping method. The chemical method uses chemical preparations to suppress wax formation, but the chemical preparations are easy to lose quickly with the liquid, and need to be refilled repeatedly to remove wax. High cost

The thermal energy cleaning method is to use a movable boiler to heat the oil well under high pressure. During cleaning, only reverse circulation heat cleaning is possible. The heat energy is injected from the casing and comes out from the oil pipe. Due to the temperature resistance limit of the underground submersible oil pump, the injection temperature can only be below 60°C , because the melting point of wax is 53°C, so the efficiency is not high, and this method is generally not used

The mechanical wax scraping method takes too long, and generally requires oil wells to be shut down for 4 to 8 hours, which affects oil production

Others proposed to directly energize the well pipe to heat and remove wax, but the power consumption is too large, and there are also potential safety hazards

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