Method for treating thickened oil oil-in-water type emulsion by magnetic nanoparticles and microwave

Abstract

The invention discloses a method for treating thickened oil oil-in-water type emulsion through magnetic nano particles and microwaves, which belongs to the technical field of oil-water separation engineering. By means of the coupling synergistic effect of the magnetic nanoparticles and the microwave high-frequency electromagnetic field, the demulsification rate and demulsification efficiency are greatly improved, and the water diversion rate of a high-stability thick oil O / W type emulsion can exceed 99% in a short time. The problems that a traditional chemical demulsifier is large in dosage and limited in application range, so that a catalyst is poisoned, flocculate generated after demulsification stays in a water phase or an oil phase all the time, and secondary pollution is caused to theenvironment are solved. Besides, the magnetic nanoparticles can be repeatedly recycled for multiple times, the demulsification cost is reduced to a great extent, the demulsified magnetic nanoparticles can be adsorbed and recycled again under the action of an external magnetic field, environmental pollution is avoided, and the magnetic nanoparticles have good application prospects.

Description

technical field [0001] The invention belongs to the technical field of oil-water separation engineering, and in particular relates to a magnetic nanoparticle-microwave treatment method for oil-in-water emulsion of heavy oil. Background technique [0002] In order to improve the recovery rate of heavy oil, major oilfields have successively adopted chemical flooding recovery technology. However, with the increase of the production period of chemical flooding, the composition of the produced fluid becomes more complex, making oil-water separation more difficult. Milk technology will bring a series of problems to the gathering and transportation process, such as: increasing the burden of storage and transportation, reducing the service life of pipelines, and causing serious corrosion of high-temperature distillation equipment. In addition, the water phase of the produced fluid after oil-water separation is mainly refilled underground or discharged. If it is not handled properly,...

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Problems solved by technology

However, the pure application of magnetic nanoparticles for demulsification has a low water separation rate, and the coupling effect between magnetic nanoparticles and an external electromagnetic field has not been exerted, which limits the application of magnetic nanoparticles.

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