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

作者：Tang Jiping^*; Di Qinfeng; Hu Yibao; Wang Wenchang; Liang Hongjun; Yang Chengxin

来源：Acta Petrolei Sinica, 2010, 31(4): 684-688.

• Axial acceleration
• Axial forces
• Axial velocity
• Borehole wall
• Bottom hole
• Dynamic characteristics
• Indentation damage
• Material characteristics
• ON dynamics
• Power equipment
• Wear mechanism
• Wear mechanisms
• Whirl orbits
• Whirl speed

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.

• 出版日期2010
• 单位上海大学