An intelligent identification method of safety risk while drilling in gas drilling

HU Wanjun,XIA Wenhe,LI Yongjie,JIANG Jun,LI Gao,CHEN Yijian

Table 1. Sample time span distribution

Type of safety risk 1# Sample time span/s 2# Sample time span/s 3# Sample time span/s Formation gas production 20 40 60 Formation water production 20 40 60 Sticking drill tool 20 40 60 Connecting column 120 150 180