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鑽具的折断已成为严重影响鑽探效率的主要事故之一。过去,对鑽具折断的研究是很差的,往往把折断的原因都主观地归罪於鑽桿磨损过旧,有的甚至得出鑽具折断是因材質不佳而造成的結論(当然这也是重要的),但却很少注意进行具体分析研究。据統計,鑽具折断的类型基本上可分为兩种。第一,鑽具折断是在鑽桿的絲扣部份;第二,鑽具折断是在鑽桿接手的絲扣中間。从以上的折断类型中可看出鑽具折断並非完全是
Drill breakage has become one of the major accidents that have a serious impact on drilling efficiency. In the past, the research on the breakage of drilling tools was very poor. The reasons for breakage were often subjectively blamed on worn-out drilling rods, and some even concluded that the breakage of drilling tools was caused by poor materials (of course Important), but seldom pay attention to the specific analysis and research. According to statistics, the type of drill break can basically be divided into two types. First, the drill is broken in the threaded part of the drill pipe. Second, the drill is broken in the middle of the threaded pipe taken over by the drill pipe. It can be seen from the above type of breakage that the breakage of the drill tool is not exactly