2) S_(75) wire-line coring drilling
S75绳索取心钻进
1.
Based on the characteristics of the strata in the Qitao coal district and the performance requirement of the drilling fluid for the S_(75) wire-line coring drilling,it selects for some(reasonable) patterns and a compounding ratio of the drilling fluids.
根据奇韬煤矿区地层特点,结合S75绳索取心钻进对冲洗液的性能要求,选择合理的冲洗液类型和配比。
4) rotary percussion drilling
回转冲击钻进
1.
Problems of drilling middle soft to middle hard rock formation with hard alloy rotary percussion drilling have been put forward.
提出了在大量遇到的中软-中硬岩层中采用硬质合金回转冲击钻进的问题,在论述球体冲击器结构及工作原理的基础上,介绍了室内外回转冲击钻进试验使机械钻速明显提高的效果,借助数理统计方法建立了球体冲击器冲击频率与风压、风量之间高度显著的相关关系式,可用于冲击频率及其它重要工艺参数的预测与控制。
6) diamond wire-line coring drilling
金刚石绳索取心钻进
1.
During the diamond wire-line coring drilling process in coal measures strata,borehole sloughing,collapsing,shrinking,fluid loss and water gushing are often encountered in rather complex strata,and caused very difficult wall protection and collapse prevention.
在煤系地层金刚石绳索取心钻进过程中,经常会因遇到较复杂地层而出现孔内掉块、坍塌、缩径、冲洗液漏失、涌水等问题,对钻进过程中护壁防塌产生了极大的困难。
补充资料：绳索
1.绳子。亦特指粗绳。 2.比喻牵挂;束缚。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条