西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (6): 80-84.DOI: 10.3863/j.issn.1674-5086.2009.06.017

• 石油与天然气工程 • 上一篇    下一篇

双重介质油藏数值模拟并行算法研究

伍轶鸣1 李勇2 李保柱2 姚军3   

  1. 1.中国地质大学(武汉)资源学院,湖北 武汉 430074;2.中国石油勘探开发研究院油气田开发所,北京 100083; 3.中国石油大学(华东)石油工程学院,山东 东营 257061
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-12-20 发布日期:2009-12-20

PARALLEL COMPUTING TECHNOLOGY FOR DUAL-POROSITY RESERVOIR NUMERICAL SIMULATION

WU Yi-Ming1 LI Yong2 LI Bao-zhu2 YAO Jun3   

  1. 1.Resource Institute,China University of Geoscience,Wuhan Hubei 430074,China;2.Oil and Gas Field Development Department,Research Institute of Petroleum Exploration and Development,CNPC,Beijing 100083,China;3.School of Petroleum Engineering,China University of Petroleum(East China),Dongying Shandong 257061,China)JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SCIENCE & TECHNOLOGY EDITION),VOL.31,NO.6,80-84,2009(ISSN 1674-5086,in Chinese
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20

摘要: 裂缝型碳酸盐岩油藏非均质性极强,数值模拟运算时间长,迫切需要一种切实可行的解决方法。介绍了区域分解法在数值模拟中的应用方法,提供了油藏数值模拟串行算法并行化的一般策略与方法。基于已开发的双重介质油藏数值模拟串行算法及建立的Windows平台PC集群网络并行计算环境,利用消息传递界面(MPI库)实现了并行过程中所有消息的传递功能。通过对国内某实际碳酸盐岩油田的模拟表明,并行后的算法是成功的,2个PC加速比高达1.86,4个PC达到3.46,8个PC达到6.89。通过模拟还发现,并行数值模拟时,存在最佳的子区域规模和数目。该算法解决了大规模碳酸盐岩油藏数值模拟时间长的问题,具有实际的应用价值。

关键词: 双重介质, 油藏数值模拟, 区域分解法, 并行计算, PC集群

Abstract: The single-phase flow through porous media in fracture media under electric field is studied with numerical simulation.A mathematical model describing the flow of single-phase fluid in fracture media under electric field is established based on the equivalent continuum model and the electroosmosis theory,the finite element method for solving the mathematical equations is introduced,three kinds of fracture media models with different fracture apertures are designed,and the effect of electric-field strength,pressure gradient and fracture aperture on flow velocity in fracture media is analyzed respectively in terms of the numerical results.The flow rate can be increased effectively under electric-field,for example,the velocity can be increased by 8.2 times in the fracture media whose aperture is 5×10-5m when electric-field strength is 450v/m,and the ratio of flow velocity under different electrical fields and zero electrical field decays exponentially with pressure gradient increasing.The results indicate that influence of electric field on flow through porous media is more significant with the decreasing in the pressure gradient and the fracture aperture.

Key words: fracture media, electric-field, flow through porous media, numerical simulation, finite element 

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