钻具接头螺纹应力分析与结构优化  

Stress Analysis and Structure Optimization of Drilling Connection

作　　者：李明[1] 严仁田 鲜奇飚[3] 刘杰[4] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [2]中国石油长城钻探工程有限公司,盘锦124010 [3]西南油气分公司川东北采气厂,阆中637400 [4]川庆钻探工程有限公司川东钻探公司,重庆400021

出　　处：《重庆科技学院学报（自然科学版）》2012年第5期118-121,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金项目(51074135)

摘　　要：石油钻具接头螺纹是发生钻具失效事故的主要部位。针对钻具接头螺纹失效问题,以41/2in钻杆接头为例,参照API SPEC 7推荐的三种类型钻杆螺纹接头及非API标准H90型螺纹接头,建立有限元模型,在标准上扣扭矩、相同载荷及边界条件下对其进行力学分析,得出4种不同扣型接头螺纹的应力分布,以此为基础提出新的结构优化。The threads of drilling connection are the main parts in drilling tool failure accidents.To solve this problem,the thread connections of 4 1 / 2 inch drilling pipe is took as an example,finite element model are established to analyze the three types of API SPEC 7 recommended thread connections and non-preferred connection(H90 style).In the same condition of standard torque,load and boundary,the stress distribution is obtained by mechanics analysis.Based on these analytical conclusions,this paper proposes a new structure optimization and provides theoretical basis for drilling pipe threads selection.

关 键 词：螺纹接头 有限元 应力分布 结构优化 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]