摘要
建立了深井APR测试管柱的力学模型 ,采用接触间隙元理论方法对深井APR测试管柱进行了力学分析 ,给出了管柱各点 (包括螺纹 )应力和强度评定条件 ,为预测管柱的强度和安全评定提供了重要的理论依据 .该方法在 5 .5km的深井中得到应用 ,悬重误差为 3 .2 3 %
A static model of APR testing string in deep well is built. The model is solved by theory of gap element of finite element method. We give a calculation procedure for calculating contact force, friction and stress of every point( including whorl ) of testing string, which provides a theoretical basis for calculation of static strength and reliability evaluation of testing string, and offers a practical method for designing and forecasting the static strength of testing string. It has already been applied to 5 500 m wells, which confirms that the static model and method proposed in this paper is correct and valid enough to meet engineering requirements,and can be applied in engineering.
出处
《大庆石油学院学报》
CAS
北大核心
2002年第1期68-71,共4页
Journal of Daqing Petroleum Institute
关键词
油气井
深井
测试管柱
力学分析
有限元法
间隙元理论
强度评定
deep well
testing string
static analysis
theory of gap element
finite element method
strength evaluation
