石油学报 ›› 2008, Vol. 29 ›› Issue (2): 296-299.DOI: 10.7623/syxb200802027

• 石油工程 • 上一篇    下一篇

利用遗传算法进行水平井水平段长度优化设计

柳毓松1, 廉培庆1, 同登科1, 田冀2   

  1. 1. 中国石油大学数学学院, 山东东营, 257061;
    2. 中国科学院力学研究所, 北京, 100080
  • 收稿日期:2007-05-24 修回日期:2007-08-01 出版日期:2008-03-25 发布日期:2010-05-21
  • 作者简介:柳毓松,男,1977年2月生,2002年获石油大学(华东)石油工程学院硕士学位,现为中国石油大学(华东)数学学院讲师,主要从事教学和油藏数值模拟研究.E-mail:ysliu1758@163.com
  • 基金资助:
    国家高科技研究发展规划(863)项目(2006AA062236);山东省自然科学基金项目(Y2007F13)联合资助

Optimum design of the horizontal section length in a horizontal well using genetic algorithm

LIU Yusong1, LIAN Peiqing1, TONG Dengke1, TIAN Ji2   

  1. 1. College of Mathematics, China University of Petroleum, Dongying 257061, China;
    2. TIAN Ji Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2007-05-24 Revised:2007-08-01 Online:2008-03-25 Published:2010-05-21

摘要: 在油藏开发过程中,随着水平井水平段长度的增加,水平井段与油藏的接触面也随之增加,同时井筒内流体的流动阻力也增加,从而导致水平井的产液量减少,即水平井的最终产量是2个相互制约的因素共同作用的结果。利用遗传算法全局寻优的特点,结合一种计算无限导流和有限导流情况下水平井产量的井筒/油藏耦合模型,提出了一种用于水平井水平段长度的优化设计方法。该方法可以在不同的油藏地质模型中使用。

关键词: 水平井, 水平段长度, 优化设计, 遗传算法, 井筒/油藏耦合模型

Abstract: As the length of a horizontal well section increases,the contact area between the horizontal well and reservoir increases.At the same time,the resistance to fluid flow in the horizontal well also increases,which has a negative effect on the fluid productivity of a well.The overall performance depends on the balance of the above two opposing factors.According to a reservoir-wellbore coupling model for calculating the fluid productivity of a horizontal well under the conditions of the infinite-conductivity and finite-conductivity,the genetic algorithm was used to find a general optimal solution.A methodology for designing the optimum length of the horizontal section in a horizontal well was developed.This method can be run under a variety of constraints.

Key words: horizontal well, horizontal section length, optimum design, genetic algorithm, reservoir-wellbore coupling model

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