Intelligent coal reservoir permeability prediction method based on particle swarm optimization
A particle swarm algorithm and intelligent prediction technology, applied in the field of mining engineering, can solve the problems of poor prediction model accuracy and generalization, model error, dependent on the number of samples, etc., to save calculation and calculation errors, improve accuracy, and reduce prediction. The effect of bias
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[0066] The technical solutions of the present invention will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present invention;
[0067] see figure 1 , an intelligent prediction method for coal reservoir permeability based on particle swarm algorithm optimization, the steps are:
[0068] S1: Collect samples for machine learning. The input content of this case study sample includes 4 indicators of coal strata: surrounding rock stress, gas pressure, self-temperature and compressive strength of coal, and the permeability of coal strata. As the output value of the learning sample;
[0069] S2: Perform data processing to remove outliers, see figure 2 ;Use the Q-Q diagram to test whether each indicator conforms to the normal distribution, and eliminate the data that does not conform to the normal distribution. The test results are shown in image 3 ;
[0070] S3, divide the data into a training set and a test set. In thi...
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