Fracturing propping agent roundness measuring method based on microscopic image processing

Abstract

The invention discloses a fracturing propping agent roundness measuring method based on microscopic image processing. The fracturing propping agent roundness measuring method comprises the following steps: carrying out angular point detection on each processed fracturing propping agent particle edge image; if no angular point is detected, the roundness of the fracturing propping agent particles is judged to be 0.9, and otherwise, the next operation is carried out; dividing the edge curve of each fracturing propping agent particle into a plurality of sections, and fitting each section of curve by using a high-order curve with the highest judgment coefficient to obtain a plurality of fitted curvilinear equations; and for the detected angular point, calculating the curvature radius of the angular point according to the serial number of the curve segment where the angular point is located, and obtaining the roundness value of each fracturing propping agent particle. According to the relationship between the angular point curvature radius and the maximum inscribed circle radius of the particles, the novel fracturing propping agent roundness measurement method is provided, the sphericity value measured by the method is accurate and effective, and intelligent measurement is achieved.

Description

technical field [0001] The invention belongs to the technical field of fracturing proppant detection in oil and gas fields, and in particular relates to a method for measuring the roundness of fracturing proppant based on microscopic image processing. Background technique [0002] As an effective way to improve oil and gas fields, fracturing technology has been well known and widely used. The fracturing technology uses artificially high pressure to create fractures of different degrees in the rock formation, and then injects fluid into the fractures to form a channel for easy oil and gas circulation. In order to keep the fractures created after fracturing open, granular fracturing proppant is usually injected into the fluid. [0003] According to the requirements of the fracturing process, the fracturing support used must be solid particles with a certain roundness and sphericity, and the higher the sphericity value of the particles, the better. The performance and quality...

AI Technical Summary

Problems solved by technology

[0004] However, this manual visual calibration method has a high probability of human interference and is easily affected by external factors, which will make the measured sphericity and roundness results inaccurate, resulting in insufficient basis and poor traceability. it's worse

At the same time, it is also necessary to consider that manual labor is prone to fatigue, the work efficiency cannot be effectively guaranteed, and the performance and quality of a large number of batches of fracturing proppant particles cannot be measured.

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