石油工程中Abaqus数值模拟若干实践综述.pdfVIP

1 Xinpu Shen, Xianhe Du/ 2010 SIMULIA, China 石油工程中Abaqus数值模拟若干实践综述 沈新普，哈里伯顿能源服务公司，休斯敦，77042，美国；杜显赫，沈阳工业大学，110870，沈阳 摘要： 本文对作者做过的3个工程实例进行综述，展示Abaqus三维数值模拟在解决石油钻井等工程方面的能 力。实例一介绍了墨西哥湾岩盐井段泥浆压力安全值的Abaqus三维计算实践。实例二介绍了综合使 用Abaqus三维数值模拟和一维常规石油孔隙压力分析软件，进行井壁稳定和泥浆压力计算，并应用 于苏里南某浅层疏松地层油田的例子。实例三是将Abaqus三维分析技术用于英国北海Ekofisk油田， 计算油田生产导致的压力降引发的地层沉降和地层主应力方向改变的情况。改变后的地应力方向矢 量图可以用作增压注水井的井孔轨迹设计的参考。 Review of Some Practices of 3-Dimensional Numerical Simulations with Abaqus in Petroleum Engineering Xinpu Shen, Halliburton Energy Service, Houston, 77042 TX, USA ; Xianhe Du, Shenyang University of Technology, Shenyang, 110870, China Abstract: Real cases of three dimensional numerical simulations with Abaqus in petroleum engineering have been reviewed . Case 1 is the numerical analysis on subsalt wellbore stability in a region of Gulf of Mexico. Special concerns were given to the shear failure gradient calculation with local refined mesh at the well section of salt base. Case 2 is the integrated analysis made on mud weight design for deviated wells in shallow loose sand reservoirs in an oil field of Suriname . One dimensional analytical tool for pore pressure analysis was used together with Abaqus finite element program. Case 3 shows numerical results of variation of stress orientation caused by pore pressure depletion in the Ekofisk field, North Sea . 1. Introduction With the development of un-conventional petro resources, 3-dimensional numerical simulation such as Abaqus has become more and more popular in petroleum engineering [1] [2] [3]. For un-conventional petro resources such as shale gas etc, conventional 1 - dimensional analytical tools can hardly meet the needs alone . In order to simulate rather complicated mechanical behaviors of various formations particularly for those rock such salt and shale etc, i