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An intelligent identification method of safety risk while drilling in gas drilling
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HU Wanjun,XIA Wenhe,LI Yongjie,JIANG Jun,LI Gao,CHEN Yijian
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Table 4. Overview of some safety risk samples while drilling after sample expansion
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Type of
Safety risk | Number of safety
risk samples | Number of complete samples | | Training set | Test set | Training set | Test set | Formation gas
production | 86 | 30 | 240 | 99 | Formation water
production | 83 | 30 | 180 | 99 | | Sticking drill tool | 79 | 30 | 200 | 99 | | Connecting column | 84 | 30 | 160 | 83 |
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