铝合金钻杆的动态特性及磨损机理分析  

Analysis on dynamic characteristics and wear mechanism of aluminum alloy drill pipe

作　　者：唐继平[1] 狄勤丰[2,3] 胡以宝[2,3] 王文昌[2,3] 梁红军[1] 杨成新[1] 

机构地区：[1]中国石油塔里木油田公司,新疆库尔勒841000 [2]上海大学上海市应用数学和力学研究所,上海200072 [3]上海市力学在能源工程中的应用重点实验室,上海200072

出　　处：《石油学报》2010年第4期684-688,共5页Acta Petrolei Sinica

基　　金：国家自然科学基金项目(No.50674065);长江学者创新团队发展计划(IRT0844)联合资助

摘　　要：根据塔里木油田某井铝合金钻杆材料特点和实际磨损情况,运用有限元法分析了铝合金钻杆在地面旋转驱动时的涡动轨迹、涡动速度、轴向速度和加速度。将其与钢钻杆的动力学特性进行的比较结果表明,铝合金钻杆在接近井壁区域内大部分时间作向前涡动,且涡动速度较大,使得铝合金钻杆易产生划痕、压痕等损伤。这也解释了俄罗斯在使用铝合金钻杆中要求尽可能采用井下动力驱动的力学机制的原因。与钢质钻杆相比,铝合金钻杆的轴向加速度较大,但其轴向力及波动幅度较小。Based on the material characteristics and wear situation of aluminum alloy drill pipe,the dynamic characteristics of aluminum alloy drill pipe in terrain rotation,such as whirl orbit,whirl speed,axial velocity and acceleration,were analyzed using the finite element method.The dynamic characteristics of aluminum alloy drill pipe were compared with that of the steel drill pipe.The results show that the aluminum alloy drill pipe moves forward in whirl motion at a high speed near the region of borehole wall.The moving situation is easy to result in the scratch and indentation damages on the surface of aluminum alloy drill pipe.That is why the Russian engineers recommend using the aluminum alloy drill pipe driven by power equipment at bottom hole.The aluminum alloy drill pipe has larger axial acceleration and smaller axial force and fluctuating amplitude than the steel drill pipe.

关 键 词：铝合金钻杆 动力学特性 有限元法 涡动 磨损机理 

分 类 号：TE242[石油与天然气工程—油气井工程]