ZHANG Qing, HE Feng, HE Youwei. Well interference evaluation and prediction of shale gas wells based on machine learning[J]. Petroleum Reservoir Evaluation and Development, 2022, (3): 487-495. DOI: 10.13809/j.cnki.cn32-1825/te.2022.03.011.
Well interference evaluation and prediction of shale gas wells based on machine learning
Inter-well interference seriously affects the production of shale gas wells. The evaluation and prediction of well interference degree is of great significance to the efficient development of shale gas. But the existing research mainly focuses on the interference phenomenon between shale gas wells
production performance
and parameter optimization through numerical simulation. There are few studies on the quantitative evaluation and prediction of the interference degree between shale gas wells
and the selected parameters is incomplete
which makes it difficult to objectively evaluate the well interference between shale gas wells. Therefore
the machine learning method is used to comprehensively consider the geological parameters and fracturing parameters to evaluate and predict the degree of interference between wells in the shale gas reservoir. Firstly
the initial data are processed to improve the data quality. Then
based on the processed data
cluster analysis and random forest algorithm are used to evaluate and predict the interference degree of shale gas wells. The results show that the proportions of the wells with low
medium and high well interference in the shale gas reservoirs are 25.93 %
37.03 % and 37.04 %
respectively. The fracturing factors show significant influence on the well interference degree in the shale gas reservoirs. After parameters optimization
the prediction results of well interference degree reaches 92.07 %
indicating that the developed prediction model can be applied to forecast the well interference degree in shale gas reservoirs.