基于Abaqus牙轮钻头新型镶装结构研究  

Research on New Teeth Mounted Structure of Roller Bit Based on Abaqus

作　　者：刘轶溟 杨春雷 LIU Yi-ming;YANG Chun-lei(Sinopec Kingdream Drilling and Oil Machinery Co., Ltd, Wuhan Hubei430000, China)

机构地区：[1]中石化江钻石油机械有限公司,湖北武汉430000

出　　处：《机械研究与应用》2019年第2期100-103,共4页Mechanical Research & Application

基　　金：国家科技重大专项:深层页岩气开发关键装备与工具研制--钻完井关键工具研制(编号:2016ZX05038-005)

摘　　要：牙轮钻头牙齿与齿孔的过盈配合结构,直接影响牙轮钻头的固齿能力和壳体结构强度,是影响布齿密度的关键因素。为了提高牙轮钻头的固齿能力,增强牙轮壳体结构强度,加大布齿密度,提出了一种变过盈量的牙轮钻头牙齿与齿孔的过盈配合镶装结构,在保证牙轮与齿孔原有结构不变的条件下,仅改变牙齿齿身部位的结构,即从齿底逐步增大牙齿直径。变过盈量的镶装结构能够提高牙轮钻头固齿能力15%～30%,牙轮结构强度提高10%～25%,以适应高密度布齿,提高钻头使用寿命和机械钻速。The interference fit structure between teeth and the teeth hole of the roller bit directly affects the teeth fixation capacity and the structural strength of cone bit body, which is the key factor affecting the teeth arranging density. For improving the teeth fastening ability, the structural strength and the arranging density, a new design for the teeth mounted structure which has variable interference between the teeth and the teeth hole is proposed in this paper. Under the condition that the original structure of the teeth hole and the roller remains unchanged, it changes the teeth structure by increasing diameter gradually from the teeth base. This new design of the teeth mounted structure can improve the fastening ability by 15%~30% and strength of roller by 10%~25%, so as to adapt to the high arranging density and improve the service life and rate of penetration.

关 键 词：牙轮钻头 过盈配合 牙齿 变过盈量 

分 类 号：TE921[石油与天然气工程—石油机械设备]