一内螺旋刀翼PDC钻头研究-中国石油大学学报.PDF

2016年摇 第40卷摇 摇 摇 摇 摇 摇 中国石油大学学报(自然科学版)摇 摇 摇 摇 摇 摇 摇 摇 Vol.40摇 No.5 摇 第5期摇 摇 摇 摇 摇 摇 摇 摇 Journal of China University of Petroleum摇 摇 摇 摇 摇 摇 摇 摇 Oct.2016 摇 摇 文章编号:1673鄄5005(2016)05鄄0123鄄05摇 摇 摇 doi:10.3969/ j.issn.1673鄄5005.2016.05.015 一内螺旋刀翼PDC钻头研究 喻开安,李文星,黄摇 巍 (中国石油大学机械与储运工程学院,北京 102249) 摘要:针对自掩埋钻井新方法需要内排屑的问题,采用螺旋刀翼、内锥面、中心腔体等结构设计内螺旋刀翼PDC钻 头,研究刀翼螺旋升角的变化规律,分析岩屑在刀翼刃部和刀翼面上的受力,建立岩屑推动力与刀翼螺旋升角的关 系,优化刀翼螺旋升角,并进行台架实验。 结果表明:内螺旋刀翼PDC钻头刀翼螺旋升角的理想设计范围为9毅 ~ 52毅,考虑加工和排屑通道大小等影响因素,其合理的设计范围为26毅 ~52毅,研制的钻头能迫使岩屑向其中心运移, 并实现岩屑的良好流动,满足内排屑要求。 关键词:自掩埋钻井;内排屑;内螺旋刀翼;PDC钻头;刀翼螺旋升角 中图分类号:TE242摇 摇 摇 文献标志码:A 引用格式:喻开安,李文星,黄巍. 内螺旋刀翼PDC钻头研究[J]. 中国石油大学学报(自然科学版),2016,40(5): 123鄄127. YU Kaian,LIWenxing,HUANGWei. Researchof inner spiralbladePDCbit[J]. Journalof ChinaUniversityof Petroleum (Edition of Natural Science),2016,40(5):123鄄127. Research of inner spiral blade PDCbit YU Kaian,LI Wenxing,HUANG Wei (College of Machinery and Storage in China University of Petroleum,Beijing 102249,China) Abstract:New method for the self burieddrillingrequiresmovingthecuttingsfromthebottomholetotheinsideofthedrill bit,and therefore the structures of spiral blade,inner cone,center cavity and so on are used in the design of the spiral blade PDC bit. In this paper,the changing rule of blade helix angle was studied,the forces on the cuttings at the blade edge andbladefacewere analyzed,therelationship betweenthe drivingforceonthe cuttingsandthebladehelix anglewas established,the blade helix angle was optimized,and bench experiment was carried out. The results show that the ideal design range of the blade helix angle is9毅-52毅,considering the influencefactors such as the process and the size of cut鄄 tings removal channels,etc. ,the reas