国内外绳索取心钻具研发应用概况及特深孔钻进问题分析

Development and application of wireline coring tool and diagnosis of ultra-deep hole drilling problems

随着钻孔深度的不断增加,对绳索取心钻具的使用性能提出了更高要求。在分析了国内外绳索取心钻具研发现状、结构设计特点及特深孔应用情况的基础上,整理了特深孔钻进绳索取心钻具使用存在的技术问题,定位机构打捞可靠性、到位报信提示可靠性、堵心报信机构工作稳定性、单动机构使用寿命均有待提高,并相应地分析了原因,为5000 m特深孔绳索取心钻具优化设计打好基础。

Increase in drilling depth poses higher requirements on the performance of wireline coring tool.With analysis of the research and development status,structural design feature and ultra-deep hole application of the wireline coring tool at home and abroad,this paper summarizes technical problems with the wireline coring tool for ultra-deep hole drilling,such as fishing reliability of the latching mechanism,signal reliability of the landing mechanism,working stability of the core jamming indicating mechanism,service life of the swivel mechanism.The causes of the above problems are also examined.All these lay a good foundation for the optimum design of the wireline coring tool used for 5000m ultra-deep holes.