钻探工程2024，Vol.51Issue(4)：23-30,8.DOI:10.12143/j.ztgc.2024.04.004
深井高速涡轮钻配套同径取心技术研究
Research on the same diameter coring drilling technology used by high-speed turbodrill for deep well
摘要
Abstract
The structural and performance characteristics of turbodrill are analyzed.In the high-temperature and high-pressure and highly abrasive strata of deep and extra-deep wells,turbodrill has basically become the only alternative downhole dynamic drilling tool to increase speed and reduce costs in composite drilling.In view of the exploration and development requirements of deep resources,the advantages and existing problems of the existing turbodrill core-extraction technology are described.In addition,numerical simulation technology is used to analyze and study the influence of drilling fluid flow state on the coring effect in the process of simultaneous coring with turbodrill.It is recognized that turbodrill can withstand high temperature and is suitable for full drilling and coring in deep and extra-deep wells,but its high rotational speed is also easy to cause core wear and rock column spiral in the process of coring drilling.Improving the high-speed single motion performance of the core-drilling tool,lengthening the spiral stabilizer of the turbodrill and using the reverse spiral spoiler are beneficial to reduce the vortex motion at the bottom of the hole and the axial velocity difference between the inner and outer tubes of the core,so as to improve the core quality of the core-drilling tool.关键词
特深井/高温硬岩/涡轮钻具/同径取心/提速降本/数值模拟/玛页1井Key words
extra-deep well/high temperature hard rock/turbodrill/simultaneous coring/increase speed and reduce costs/numerical simulation/Maye 1 oil well分类
地质学引用本文复制引用
闫家,梁健,王文,王瑜,张凯,张恒春,曹龙龙,吴纪修,王志刚..深井高速涡轮钻配套同径取心技术研究[J].钻探工程,2024,51(4):23-30,8.基金项目
中国地质调查局地质调查项目(编号:DD20211421、DD20243010) （编号:DD20211421、DD20243010）
