摘要
在地质工作中,钻探是一种直接有效的手段,它可以为地质工作取得第一手资料。钻探工作中经常遇到很多复杂的地质状况,如：地层渗漏、孔壁塌陷、钻孔缩径等。在钻探过程中,经常会发生卡钻、埋钻事故,这是由孔壁地质结构的不稳定所造成的。如果不能及时处理这些情况,孔内发生事故的概率就会增大,如果处理时间过长,钻孔报废的可能性就会很高,这就造成了资源的浪费。钻探取心的过程必须快速、安全、准确地完成,“预防为主,防治结合”的原则就要在钻探设计初期被采用。本文以国内某些金矿区为实例,通过对复杂地层性质的分析,总结出钻探工作中采用套管以及护壁堵漏的一种新的钻探方法。
Drilling is a direct and effective method in geological work. It can obtain first-hand information for geological work. Many complex geological conditions are often encountered in drilling work, such as formation seepage, hole wall collapse, borehole shrinkage and so on. During the drilling process, the drilling and burying accidents occur frequently, which are caused by the instability of the geological structure of the hole wall. If you can not deal with these situations in time, the probability of occurrence of accidents will increase, if the processing time is too long, the possibility of drilling holes will be very high, which caused a waste of resources. Drilling coring process must be fast, safe and accurate completion, ＂prevention first, the combination of prevention and control＂ principle should be used in the early drilling design. In this paper, some domestic gold mining area as an example, through the analysis of the properties of complex formation, summed up a new method for drilling and casing wall plugging the drill.
出处
《世界有色金属》
2016年第11期140-140,144,共2页
World Nonferrous Metals
关键词
钻探
复杂地层
套管
护壁
drilling
complex stratum
bushing
encasing
