单牙轮钻头楔形牙齿偏转角优化方法  

Optimization Methodology for Tooth Deflection Angles of Single-Cone Bit with Wedge-Shaped Teeth

作　　者：陈炼[1,2] 宋朝晖 王新东 张武涛 谢正森 粟籽华 CHEN Lian;SONG Zhaohui;WANG Xindong;ZHANG Wutao;XIE Zhengsen;SU Zihua(School of Mechanical Engineering,Southwest Petroleum University,Chengdu,Sichuan,610500,China;Postdoctoral Research Mobile Station of Southwest Petroleum University,Chengdu,Sichuan,610500,China;Engineering Technology Research Institute,CNPC Xibu Drilling Engineering Company,Limited,Urumqi,Xinjiang,830046,China)

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]西南石油大学博士后科研流动站,四川成都610500 [3]中国石油集团西部钻探工程有限公司工程技术研究院,新疆乌鲁木齐830046

出　　处：《石油钻探技术》2023年第1期57-61,共5页Petroleum Drilling Techniques

基　　金：国家自然科学基金项目“动静复合单牙轮钻头破岩机理及设计理论研究”(编号:51304168);中国博士后科学基金(编号:2021M693909)联合资助。

摘　　要：为了解牙齿偏转角对单牙轮钻头破岩效率的影响,获得最优的牙齿偏转角,结合单牙轮钻头的运动特性和牙齿的工作特点,采用数值分析方法进行了楔形牙齿刮切破岩模拟,并建立了单牙轮钻头楔形牙齿偏转角优化方法,同时开展了不同楔形牙齿偏转角单牙轮钻头的破岩试验。数值分析表明:刮切破岩过程中,单牙轮钻头楔形牙齿的工作面和刮切体积在不断变化;楔形牙齿偏转角优化方法能准确、快速地计算楔形牙齿刮切体积,找出最优的偏转角;优化计算发现楔形牙齿的最优偏转角都在90°附近。破岩试验结果验证了楔形牙齿偏转角优化方法的可行性和计算结果的准确性。研究结果表明,利用单牙轮楔形牙齿偏转角优化方法,可以求得单牙轮钻头楔形牙齿的最优偏转角,可以为单牙轮钻头布置楔形牙齿提供指导。To investigate the influence of tooth deflection angles on the rock-cutting efficiency of single-cone bits and obtain the optimal tooth deflection angle as well,rock scraping of wedge-shaped teeth was simulated by a numerical analysis method according to the motion characteristics of single-cone bits and the working performance of the teeth.An optimization methodology for the tooth deflection angles of single-cone bits with wedge-shaped teeth was developed,and rock-cutting tests were carried out on single-cone bits with different tooth deflection angles.The numerical analysis results showed that the working face and scraping volume of the wedge-shaped teeth of the single-cone bits kept changing during scraping rock.The proposed optimization methodology for tooth deflection angles could calculate the scraping volume of the wedge-shaped teeth and obtained the optimal tooth deflection angles accurately and rapidly.The optimizing calculation revealed that the optimal tooth deflection angles were all around 90°.The rock-cutting test results verified the feasibility of the proposed optimization methodology for tooth deflection angles and the accuracy of its calculation results.The research results demonstrated that the proposed optimization methodology for tooth deflection angles of single-cone bit with wedge-shaped teeth can be applied to obtain the optimal tooth deflection angles of the wedge-shaped teeth and direct their distribution on single-cone bits.

关 键 词：单牙轮钻头 牙齿偏转角 优化 破岩效率 数值分析方法 实验室试验 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]