摘要
在套管损坏问题的研究中,选择平面有限元对引起套损原因进行分析.建立物理模型并阐述了该方法的原理,确定了该物理模型的边界条件.用四边形等参平面有限元进行计算求解.引入了摩擦元进行模拟在地层注水后产生的浸水域引起的地层错动面.考虑了岩石单元的非线性特性,以此方法开发的程序可以对地层压力改变、浸水域位置改变、浸水域大小改变和泥岩水化程度进行分析.本研究方法为套损研究提供了一个新思路.
For investigation of casing damage,plane finite element method was used to analyze the cause of casing damage ,the limit conditions of the physical model are made by constructing a physical model and stating the principle of this method. Friction element was introduced to simulate the changing of relative position of stratum caused by water injecting into stratum.Considering the nonlinear feature of rock element,the program developed in this method was used for analyzing the alteration of stratum pressure ,the position and the size of water soaked area and the hydrated degree of marl.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2003年第3期330-333,共4页
Journal of Harbin Engineering University
关键词
油水井
套管损坏
泥岩层
浸水域
water and oil well
casing damage
marl layer
water soaked area.
