摘要
挠性短节和磨铣工具的几何形态和力学状态直接影响套管侧钻开窗效率和侧钻窗口形态。根据套管开窗侧钻工艺原理,分析挠性短节和磨铣工具受力、振动和弯曲状态,设计“五因素四水平”正交实验,获取工具结构和作业的优水平参数,研究不同优水平参数对挠性短节Mises应力、铣锥切削力和侧向力的影响规律。结果表明:钻压、短节径厚比和短节长度对工具力学性能影响较大,转速和套管型号影响较小。套管开窗作业用时减少,总体开窗效率较同区块其他常规开窗井平均水平提升30.6%。该方法能够有效提高工具效率及寿命,优水平参数组合为不同工况下开窗工具型号及参数的优选提供参考。
The geometric form and mechanical state of flexible short joints and milling tools directly affect the efficiency of casing side drilling window opening and the shape of side drilling window.Based on the principle of casing window drilling technology,analyze the force,vibration,and bending status of the flexible short joints and milling tools,design a“five factor and four level”orthogonal experiment,obtain the optimal level parameters of the tool structure and operation,and study the influence of different optimal level parameters on the Mises stress,milling cone cutting force,and lateral force of the flexible short joint.The results show that the drilling pressure,short pitch diameter to thickness ratio,and short pitch length have a significant impact on the mechanical properties of the tool,while the impact of rotational speed and casing type is relatively small.The time required for casing window opening operation in a certain well has been reduced,and the overall window opening efficiency has increased by 30.6%compared to the average level of other conventional window opening wells in the same block.This method can effectively improve the efficiency and lifespan of the tool,and the optimal parameter combination provides a reference for the optimization of window opening tool models and parameters under different working conditions.
作者
杨保健
华泽君
关皓纶
薛宪波
YANG Baojian;HUA Zejun;GUAN Haolun;XUE Xianbo(Tianjin Branch of CNOOC(China),Tianjin 300459,China;COSL Integrated Solution&New Energy,Tianjin 300459,China)
出处
《东北石油大学学报》
CAS
北大核心
2023年第5期92-100,124,I0006-I0007,共12页
Journal of Northeast Petroleum University
基金
中国海洋石油集团公司科技项目(YSB19YF025)。
关键词
套管开窗
侧钻
挠性短节
磨铣工具
力学分析
结构参数
casing window
sidetracking
flexible short joint
milling tool
mechanical analysis
structural parameter
