Quantitative evaluation of the sealing effect of penetrating gas drilling and in situ repairing technology for smooth holes
Zuxiang Hu,
Yuepeng Yan,
Hongqi Yang
et al.
Abstract:In this study, a new method is proposed to quantitatively determine the extraction of boreholes under the effect of time. The main purpose of this method is to divide the gas drilling holes in the monitoring time into two stages: the early stage of extraction and the middle stage of extraction. The early stage of extraction uses the gas pressure difference to detect the gas tightness of the drilling holes and determine the type of gas leakage of the drilling holes. Moreover, the unqualified drilling holes are … Show more
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