万米科学钻探钻杆柱的优化配置发展趋势

Development trend of drill string optimal configurationin myriametre scientific drilling

科学超深井是中国发展能源战略和“透明地球”的重要组成部分,钻杆柱作为科学超深井实施的关键技术,其优化配置是万米深部钻探工程顺利完成的重要保障。针对如何科学选配钻杆柱以应对万米钻深的需求,通过超深井钻杆柱面临的技术挑战分析,考虑钻杆柱整体强度、密封性能和使用过程中的持续稳定性,结合大强重比管材技术、复合钻杆柱技术、接头优配技术、钻杆制造技术、涂层防护技术、动力学分析和钻杆智能化等7个关键技术,给出了万米科学钻探钻杆柱的优化配置方案,明确了超深井钻杆柱未来发展趋势。

Scientific ultra deep well is an important part of energy development strategy and the"transparent earth"project in China.As a key part of scientific ultra deep well,the drill string provides a guarantee for the safe and successful implementation of deep exploration engineering with its optimized configuration.Aiming at scientific selection of drill string for the demand of myriametre drilling depth,and considering the overall strength,sealing performance and continuous stability of drill string in use,this paper discusses seven key technologies based on analysis of technical challenges faced by the drill string in ultra deep well.such as pipe technology of high strength-to-weight ratio,composite drll string technology,joint optimization technology,dril pipe manufacturing technology,coating protection technology,dynamic analysis and intelligent drll string,and proposes the optimized configuration solution of drll string for myriametre scientific drlling.At the same time,the development trend of drill string is analyzed.It defines the research direction of the drll string for myriametre scientific well.