The first step of the process was to perforate, and after the guns were fired, to circulate bottoms up to handle any possible influx of gas.
作业的第一步是射孔，射孔后循环一周以排除气体溢流的可能性。
The first step of the process was to perforate, and after the guns were fired, to circulate bottoms up to handle any possible influx of gas.
作业的第一步是射孔，射孔后循环一周以排除气体溢流的可能性。
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