螺杆钻具轴承组优化设计  

An optimum design for PDM drill bearing pack

作　　者：徐芊[1] 赵宁[1] 朱雅妮[1] 袁烨[1] 

机构地区：[1]中国石油大学(北京),北京102249

出　　处：《复杂油气藏》2016年第1期83-86,共4页Complex Hydrocarbon Reservoirs

摘　　要：针对螺杆钻具轴承组容易出现磨损、断裂和卡死等现象,进行轴承组优化设计。分析推力轴承受力状况和轴向力计算,在轴向轴承的表面焊接PDC复合片,以取代滚珠,提高耐磨性;在轴承之间均匀布置碟形弹簧,以缓冲轴承受到的冲击力。采取这两个技术方案,可以进一步延长螺杆钻具的使用寿命。Wear,fracture and seizure could easily happen in bearing pack. Based on analysis of forces on thrust bearing and calculation of thrust load,an optimum design was developed to solve the problem. In order to improve the wear resistance,the design replaced the ball bearing with PDC complex which was equispaced on axial bearing. The disc spring was disposed between bearing pack to act as a buffer. With these two methods,the bearing life of PDM drill could be increased.

关 键 词：螺杆钻具 轴承组 PDC复合片 碟形弹簧 设计 

分 类 号：TE24[石油与天然气工程—油气井工程]