A method for detecting particle size of heavy oil/water particles

Abstract

The invention provides a particle size detection method of opaque heavy oil in water, which specifically includes: adding a separate continuous phase sample water into the sample tank of the ultrasonic attenuation particle size meter, inputting the density of the sample to be tested, and The ultrasonic attenuation spectrum test is carried out under the frequency conditions, and the test results of the acoustic characteristic parameters of the continuous phase are saved; the separate dispersed phase sample heavy oil is added to the sample tank of the ultrasonic attenuation particle size analyzer, and the density of the sample to be tested is input. The ultrasonic attenuation spectrum test is carried out separately, and the test results of the acoustic characteristic parameters of the dispersed phase sample are saved; The measured acoustic information of the continuous phase and dispersed phase samples, select the test frequency conditions of the continuous phase and dispersed phase to test the ultrasonic attenuation spectrum of the sample to be tested, and obtain the opaque water of the opaque O / W viscous oil system based on the test results Including particle size and distribution of heavy oil particles.

Description

technical field [0001] The invention relates to the field of petrochemical industry, and specifically provides a method for detecting the particle size of opaque heavy oil particles. Background technique [0002] Heavy oil occupies a relatively large proportion of the world's oil and gas resources, conventional crude oil only accounts for about 30% of it, and the rest is heavy oil, super heavy oil and asphalt. Heavy oil at home and abroad has the characteristics of high relative density, high colloid and asphaltene content, etc., which leads to high apparent viscosity and large flow resistance of heavy oil, and it cannot flow even under the condition of oil layer. Therefore, heavy oil must be developed according to different development stages. In order to meet the actual requirements of the actual requirements, the viscosities of heavy oil can be reduced by using appropriate technology, and the flow performance of heavy oil can be improved, so that the production and gather...

AI Technical Summary

Problems solved by technology

At present, the methods for measuring the particle size of opaque heavy oil in water in O / W viscosity reduction system mainly include laser particle size method and microscopic observation method. The particle size measurement of the heavy oil in water particle system can only be carried out on the particle size analysis test of the dilute solution (<1%) system no matter by laser particle size method or microscopic observation method, but the O / W viscosity reduction system is in the The particle size of opaque heavy oil-in-water will change immediately after dilution, and the obtained particle size and distribution cannot truly reflect the particle size and distribution of the entire system. Therefore, there is currently a lack of truly effective analytical methods to characterize O / W viscosity reduction. Particle size and particle size distribution of equal high concentration opaque system

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