Experimental device and method for quantitatively characterizing the influence of shear effect on the aggregation behavior of wax crystals

Abstract

The present invention relates to a test device and method for quantitatively characterizing the influence of shear effect on wax crystal aggregation behavior, wherein the quantitative characterization method of the test device for quantitatively characterizing the influence of shear effect on wax crystal aggregation behavior is as follows: 1. Synchronously shearing waxy crude oil Wax crystal image capture in cutting mode: 2. Generation, segmentation and grayscale image extraction of wax crystal image grayscale information; 3. Acquisition of spatial surface feature parameters of wax crystal grayscale image; 4. Determination of fractal dimension of wax crystal; 5. Repeat 1 to 4 to obtain the fractal dimension of wax crystals under other shear effects; 6. Establish the functional relationship between the shear effect and the fractal dimension of wax crystals, and quantitatively characterize the shear with the size distribution and change law of the fractal dimensions of wax crystals. The influence of shear effect on the aggregation behavior of wax crystals. The present invention solves the problems that in the prior art, wax crystal images cannot be synchronized with the different hydrodynamic conditions experienced by waxy crude oil, and image grayscale information is lost and quantitative parameters are unreliable when characterizing wax crystal aggregation behavior.

Description

1. Technical field: [0001] The present invention relates to waxy crude oil pipeline transportation technology, when describing the mechanism of wax deposition in the shear flow field from the perspective of thermodynamics and dynamics, it solves the shape and structure of wax crystals precipitated in the crude oil under the influence of the shear effect of pipeline transportation, especially It is a technical problem of quantitative characterization of its aggregation behavior, specifically related to the experimental device and method for quantitative characterization of the influence of shear effect on the aggregation behavior of wax crystals. 2. Background technology: [0002] Under the background that my country's dependence on foreign crude oil is increasing year by year (in 2015, it broke through 60% for the first time, reaching 60.6%; in 2016 or nearly 65%), in order to ensure "oil security", in addition to increasing exploration efforts to find new oil reserves, In ad...

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Problems solved by technology

[0004] An object of the present invention is to provide quantitatively characterizing the test device that shear effect influences wax crystal aggregation behavior, another object of the present invention is to provide quantitative characterizing shear effect to the test device quantitative characterization method that quantitative characterizes shear effect influences wax crystal aggregation behavior, it uses To solve the problem that the existing technology cannot synchronize the different hydrodynamic conditions experienced by waxy crude oil when taking wax crystal images, and when characterizing the wax crystal aggregation behavior, the image grayscale information will be lost, especially the wax crystal structure in the distribution area is idealized problems that make quantitative parameters unreliable

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