Method for testing sphericity of fracturing propping agent

A technology of proppant and sphericity, applied in measuring devices, particle size analysis, instruments, etc., can solve the problem of large gap in sphericity of resolution particles

Active Publication Date: 2016-11-23
QINGDAO SHIDA HUASONG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the above-mentioned technical problems existing in the prior art, the present invention proposes a method for testing the sphericity of fracturing proppant,

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  • Method for testing sphericity of fracturing propping agent
  • Method for testing sphericity of fracturing propping agent

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Experimental program
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Embodiment 1

[0061]In order to solve the problems of large difference in sphericity of particles with different resolutions, slow speed, and low test accuracy. The invention provides a method for testing the sphericity of the fracturing proppant (such as figure 1 shown), including the following steps:

[0062] Step 1: Grab 20-50 proppant particles, use a stereo microscope to collect data images, pre-process the images, and classify them according to the image features.

[0063] Step 2: If it is a quartz sand proppant particle, process the digital image and obtain image data information. The roundness of the proppant is obtained by extracting the radius of the inscribed circle at all corner points on the profile of the test particle; the sphericity of the proppant is calculated by extracting the long and short sides of the test particle.

[0064] Step 3: If it is a ceramic proppant particle, process the digital image and obtain image data information. Calculate the proppant sphericity by...

Embodiment 2

[0110] This implementation has specifically described the present invention on the basis of Embodiment 1. The present invention is accomplished by means of the software Fracture_PRS 1.0 platform.

[0111] The first step is to use a stereo microscope to obtain the particle image, and use software for preliminary preprocessing;

[0112] In the second step, calculate the sphericity of the particles in the template as described in step 2 to obtain the test results as follows figure 2 shown.

[0113] Will figure 2 The test results in the image 3 Comparing the standard template diagram in , it can be seen that the test results meet the experimental requirements, with high precision and fast speed.

[0114] The invention uses a stereo microscope to complete the data collection, which saves manpower and has a high degree of automation; the original definition test method is adopted, and the initial definition of roundness is used as the starting point to calculate the sphericit...

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Abstract

The invention discloses a method for testing the sphericity of a fracturing propping agent and belongs to the technical field of development of oil-gas fields. A stereoscopic microscope is adopted for finishing data acquisition work, labor is saved, and the automation degree is high. An original definition testing mode is adopted, the particle sphericity is calculated with sphericity initial definition as a starting point, and testing precision is high. Through the hybrid programming data processing technology, the calculation speed is increased, and calculation precision is improved. The problem that the difference between the sphericity of particles at different resolutions is large is solved. The defects that in the prior art, the testing quantity is small, the speed is low, and the precision is low are overcome, and the detection level of propping agent particles is increased. Development of the scene fracturing technology is powerfully supported.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, and in particular relates to a method for testing the sphericity of a fracturing proppant. Background technique [0002] Fracturing proppant is an important material used in fracturing in oilfield development. The performance of proppant is directly related to the fracture conductivity under closing pressure, which plays a very important role in formation fracturing. Proppant sphericity is an important parameter for performance evaluation of fracturing proppant. In the standards such as QSH 1020 1598-2008 Fracturing Proppant Performance Index and Measurement Method, QSY 125-2007 Fracturing Proppant Performance Tabulation and Evaluation Test Method, SYT 5108-200 Fracturing Proppant Performance Index and Test Recommended Method, etc., The evaluation methods all adopt the plate comparison method, which has the disadvantages of large error, strong subjectivity and long test ti...

Claims

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Application Information

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IPC IPC(8): G01N15/02
CPCG01N15/0227
Inventor 赵希春韩俊华陈晖刘冬冬张云玲邵东亮马文衡刘智飞李慧娟
Owner QINGDAO SHIDA HUASONG SCI & TECH
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