钻探工程2024，Vol.51Issue(5)：36-44,9.DOI:10.12143/j.ztgc.2024.05.004
中空螺杆马达井底动力绳索取心钻具的研制与试验
Development and test of hollow screw motor bottom hole power wire-line core drill
摘要
Abstract
Aiming at the problems of low drilling efficiency and low coring efficiency of hard rock coring tools in ocean drilling,this paper introduces the basic development and land test of Ø185mm hollow screw motor bottom hole power rope coring tool developed by the Institute of Exploration Techniques,CAGS.In the development process,through theoretical calculation and Ansys Workbench finite element simulation,the spiral structure of the hollow screw motor is optimized and the dynamic analysis is carried out.The force safety analysis of the universal joint is carried out,and the material is optimized.The key technologies such as multi-head small offset short pitch hollow rotor and flexible hollow universal joint are overcome.The feasibility of the working performance of the prototype of the coring tool is verified by the coring test of granite block on land,which provides the guidance of working parameters and the optimization of matching drill bit for the engineering application of this coring tool.It can provide hard rock coring technical support for ocean drilling and deep scientific drilling in China.关键词
孔底动力/中空螺杆马达/柔性万向节/硬岩取心/大洋钻探Key words
bottom power/hollow screw motor/flexible universal joint/hard rock coring/ocean drilling分类
地质学引用本文复制引用
陈晓君,宋刚,王诗竣,韩泽龙,赵明,张欣,田英英..中空螺杆马达井底动力绳索取心钻具的研制与试验[J].钻探工程,2024,51(5):36-44,9.基金项目
中国地质调查局地质调查项目"深海钻探工程关键技术支撑"(编号:DD20221721) （编号:DD20221721）
