西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

一种快速求解交联聚合物驱数学模型的方法

元福卿1,2,穆停华3,魏翠华2   

  1. 1. 中国石油大学石油工程学院,山东青岛266580
    2. 中国石化胜利油田分公司地质科学研究院,山东东营257015
    3. 中国石化胜利油田分公司海洋采油厂,山东东营257237
  • 出版日期:2014-12-01 发布日期:2014-12-01
  • 基金资助:

    国家科技重大专项(2011ZX05011)。

A Fast Solution to the Mathematical Model of Cross-linked
Polymer Flooding

Yuan Fuqing1,2, Mu Tinghua3, Wei Cuihua2   

  1. 1. College of Petroleum Engineering,China University of Petroleum,Qingdao,Shandong 266580,China
    2. Geoscience Research Institute of Shengli Oilfield Branch Company,Dongying,Shandong 257015,China
    3. Haiyang Oil Production Plant of Shengli Oilfield Branch Company,Dongying,Shandong 257237,China
  • Online:2014-12-01 Published:2014-12-01

摘要:

针对油藏数学模型求解效率低下的问题,研究了快速求解交联聚合物驱数学模型的方法。根据交联聚合物驱
的调驱机理,建立了三维两相五组分(油、水、聚合物、交联剂和交联聚合物)的交联聚合物驱数学模型,模型的求解采
用隐式压力、显式饱和度和显式浓度的求解方法。其中,压力的求解提出了计算效率更高、更稳定的Douglas 差分格
式,利用分步降维的思路求解。与商业化的油藏数值模拟软件CMG 相比,采用Douglas 差分格式并结合追赶法求解
交联聚合物驱数学模型,可以大幅度提高模型的计算效率,为快速求解交联聚合物驱油藏数学模型提供了一种有效
方法。

关键词: 交联聚合物驱, 数学模型, Douglas 差分格式, 油藏数值模拟

Abstract:

To solve the problem of the poor computational efficiency in solving reservoir mathematical model,we studied a
fast solution. A three-dimension,two-phase(oleic,aqueous)and five-component(oil,water,polymer,cross-linked polymer,
cross-linker)mathematical model was presented according to the profile control and flooding mechanism of cross-linked polymer
flooding. Based on IMPES method,a more efficient and more stable Douglas difference scheme was proposed which uses
the step-by-step reduced-order idea to solve a model. The simulation result shows that compared with commercial simulator
CMG,the Douglas difference scheme in combination with chase method can greatly improve the solution efficiency,which
provides an effective way to solve a reservoir mathematical model.

Key words: cross-linked polymer flooding, mathematical model, Douglas difference scheme, reservoir numerical simulation