文章摘要
实验设计方法在低渗油藏CO2驱设计优化中的应用
Application of Experiment design during Design of CO2 Flooding for Tight Reservoirs
投稿时间:2018-07-06  修订日期:2018-07-06
DOI:
中文关键词: 低渗油藏 CO2驱 实验设计 EOR 埋存
英文关键词: Tight reservoir  CO2 flooding  DOE  sequestration  
基金项目:“十三五”国家重大专项“海上油田化学驱油技术”(2016ZX05025-003)
作者单位E-mail
李保振 海洋石油高效开发国家重点实验室 baozhen_li@126.com 
康晓东 中海油研究总院有限责任公司;海洋石油高效开发国家重点实验室 KXD@126.com 
张健 中海油研究总院有限责任公司;海洋石油高效开发国家重点实验室 Zhangj@163.com 
唐恩高 中海油研究总院有限责任公司;海洋石油高效开发国家重点实验室 engtang@163.com 
张贤松 中海油研究总院有限责任公司;海洋石油高效开发国家重点实验室 zhxs@126.com 
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中文摘要:
      将两水平析因实验设计方法引入CO2 驱优化设计研究中,综合考虑储层垂向渗透率与倾角、相渗滞后、注采井型与注采方式等因素,在确定出少量典型方案的基础上,通过统计分析获取关键因素排序及各因素间交互作用等敏感性信息,确定了适合低渗油藏条件的CO2驱注采方式、注采井型及其优化组合,有效提高了注气设计工作的效率。结合A油藏CO2驱方案研究表明,利用大斜度井连续注CO2,结合根据生产气油比与油藏压力实施开关井控制的注采方法可以增加注入能力、缩短开发周期,能够同时获得采收率与埋存的综合优化效果。
英文摘要:
      Reservoir simulation were performed to investigate the best injection and production schemes in tight reservoirs among continuous gas injection; water alternative gas injection, producers well control according to GOR and reservoir pressure; Periodical injection and production, etc. Otherwise to find out the effect of different geological as well as engineering aspects of the reservoirs during CO2 flooding in tight reservoir, a large number of simulations were needed to quantify the impact of all these factors and their corresponding uncertainties taking into account various combinations of the factors. The design of experiment method along with response surface methodology and will be utilized to maximize the information gained from each uncertainty analysis. The two objective functions were oil recovery and amount of CO2 sequestered. This paper shows that continuous CO2 injection using directional injectors coupled producers’ well control method is the best scheme during CO2 flooding in tight reservoirs, which can give higher oil recovery and the most CO2 sequestration. At last this method was used in A reservoir in Jilin Oilfield, which can realize the co-optimization of oil recovery and CO2 storage.
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