Anti-emulsion demulsifier for acid fracturing and preparation method thereof

Abstract

The invention discloses an anti-emulsion demulsifier for acid fracturing. The anti-emulsion demulsifier comprises 20%-25% of sodium perfluorononenyloxybenzenesulfonate, 25%-30% of polyethylene glycoloctadecanol ether, 15%-20% of alkylphenol ethoxylates, 12%-16% of fatty alcohol polyether, 4%-8% of a cosolvent, 5%-10% of a stabilizer and 6%-8% of a catalyst. According to the anti-emulsion demulsifier for acid fracturing and the preparation method thereof, after the demulsifier is prepared and discharged through a mixing device, a motor is started to be matched with a first driving piece and asecond driving piece to drive a mixing barrel to move upwards, so that the mixing barrel and a cleaning ring move downwards, and a large amount of the demulsifier adhering to the inner wall of the mixing barrel is pushed out to a supporting disc; the upper side of a receiving bag is separated from the supporting disc, a bag opening in the upper side of the receiving bag is tightened, a solution ispushed to flow into a liquid discharging pipe through a through hole in the center of the bag opening by downward extrusion of the hand and then flows into a collecting container, waste caused in thedemulsifier production process is reduced, and more energy is saved and more environment is protected.

Description

technical field [0001] The invention specifically relates to an anti-emulsion demulsifier for acid fracturing and a preparation method thereof. Background technique [0002] A demulsifier is a surfactant that breaks up an emulsion. The demulsifier mainly destroys the emulsion by partially replacing the role of the stable film. Used as a dehydrating agent, it can remove the water in crude oil and heavy oil, so that the water content can meet the requirements; it can reduce the viscosity of crude oil when used in oil wells, so that the oil wells will not be blocked. Polymerized from fatty alcohol, propylene oxide, and ethylene oxide, easily soluble in water, light yellow or milky white viscous liquid, soapy smell, freezing point 25-40°C. The hydroxyl value is less than or equal to 60 mg potassium hydroxide / g, and the aqueous solution is milky white. [0003] The demulsifier is usually a light yellow or milky white viscous liquid. During preparation, it is usually necessary ...

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Problems solved by technology

[0003] The demulsifier is usually a light yellow or milky white viscous liquid. During preparation, it is usually necessary to use a mixing device to mix it. Since the demulsifier is a viscous liquid, a large amount of demulsifier will adhere to the inner wall of the mixing device after the liquid is formed. Broken emulsion, resulting in waste

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