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

注CO2 混相驱候选油藏筛选评价新方法

张艳玉1 *,李延杰2,孙晓飞1,白需正3,苏玉亮1   

  1. 1. 中国石油大学(华东)石油工程学院,山东青岛266580
    2. 中海油研究总院,北京朝阳100028
    3. 中国石化胜利油田股份有限公司孤东采油厂,山东东营257000
  • 出版日期:2015-08-01 发布日期:2015-08-01
  • 通讯作者: 张艳玉,E-mail:yyzhang@upc.edu.cn

A New Screening Evaluation Method for Candidate Reservoirs by CO2 Injection Miscible Flooding

Zhang Yanyu1*, Li Yanjie2, Sun Xiaofei1, Bai Xuzheng3, Su Yuliang1   

  1. 1. College of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,China
    2. General Research Institute,CNOOC,Chaoyang,Beijing 10028,China
    3. Gudong Oil Production Plant of Shengli Oil Field Co. Ltd.,SINOPEC,Dongying ,Shandong 257000,China
  • Online:2015-08-01 Published:2015-08-01

摘要:

在注CO2 提高采收率项目实施之前,对油藏进行注CO2 筛选评价可提高注CO2 项目的成功率和经济效益。
从CO2 混相驱机理出发,综合分析了影响注CO2 混相驱开采效果的12 个油藏和流体参数作为筛选油藏的综合评价
参数。根据对国内外大量CO2 混相驱项目的统计,运用理论分析、现场经验和概率统计相结合的方法确定了这些参数
的量化方法。在运用改进的层次分析法和熵权法确定评价参数的综合权重的基础上,结合理想解法与灰色关联分析
法的优点,建立了用于多油藏筛选评价的加权灰色关联理想模型(GC TOPSIS)综合评价方法。应用该筛选方法对
5 个典型的候选油藏进行了综合评价,结果表明:该方法能够成功结合主客观两方面的影响,正确评价各候选油藏注
CO2 混相驱潜力的大小。

关键词: CO2 混相驱, 筛选指标, 评价标准, 理想解法, 灰色关联

Abstract:

Before the implementation of CO2 injection EOR project,screening evaluation of the candidate reservoirs can improve
the success rate and economic benefits of CO2 injection. Based on CO2 miscible flooding mechanism,this paper picks out
12 reservoir parameters and fluid parameters affecting CO2 injection miscible flooding results as comprehensive evaluation parameters
to screen out the candidate reservoirs. According to the investigation of a large number CO2 miscible flooding projects
at home and abroad,the quantitative method is determined by theoretical analysis,field experience and probability statistics.
Through calculating the combinational weight by improved AHP and entropy method and combining the advantages of TOPSIS(
Technique for Order Preference by Similarity to Ideal Solution)with gray relational analysis,the weighted GC TOPSIS
model is established to screen out the candidate reservoirs. This screening method was used to assess five classical candidate
reservoirs about CO2 injection miscible flooding. The results show that:by combined both subjective and objective impact,
this method can correctly evaluate the potential of CO2 miscible flooding of the candidate reservoirs.

Key words: CO2 miscible flooding, screening index, evaluation criteria, ideal solution, grey correlation