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

CO2 混相驱拟含气率与采出程度图版的建立

孙雷1,冯乔1,陈国利2,张华2,靳美玉3   

  1. 孙雷1,冯乔1,陈国利2,张华2,靳美玉3
  • 出版日期:2014-02-01 发布日期:2014-02-01
  • 基金资助:

    十二五国家科技重大专项“CO2 驱油藏动态监测与方案优化技术”(2011ZX05016–005)。

Establishment of the Chart of Equivalent Gas Ratio-Recovery Degree for
CO2 Miscible Flooding

Sun Lei1, Feng Qiao1, Chen Guoli2, Zhang Hua2, Jin Meiyu3   

  1. 1. State of Key Laboratory of Oil & Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. Jilin Oilfield Company,PetroChina,Songyuan,Jilin 138000,china
    3. Korla General Vocational and Technical College,Korla,Xinjiang 841000,China
  • Online:2014-02-01 Published:2014-02-01

摘要:

针对Y 区块注CO2 混相驱动态开发评价方法不够全面不够系统、利用水驱童氏图版评价气驱开发效果不够
准确等特点,首先定义了A 型气驱特征曲线,在此基础上推导了适合Y 区块的CO2 混相驱拟含气率和采出程度的关
系式,绘制了CO2 混相驱特征理论图版,用改进后的图版预测了Y 区块注CO2 后所提高的最大采收率,并将预测的
采收率与现场预测的采收率进行比较,其结果比较吻合,说明该图版能很好地预测CO2 混相驱动态开发效果,同时对
该区块下一步的开发及评价具有指导意义。

关键词: CO2 混相驱, 拟含气率, 采出程度, 提高的最大采收率, 图版

Abstract:

Because the dynamic evaluation methods of CO2 miscible drive is not enough comprehensive and systematic,and
also the improved water flooding chart is not suitable for the evaluation of the CO2 miscible drive,we first define the type A
gas flooding characteristic curve. Then on the basis of it,we have derived the relational expression between the equivalent gas
rate and recovery degree,and draw the calibration chart. We use this chart to predict the biggest increased recovery of Y block
after injecting CO2,and by comparing with the scene results,we find that two of them are consistent. So the results that the
chart is a good predictor of the biggest increased recovery after injecting CO2. In general,this method is more significant for
the block’s further development.

Key words: CO2 miscible flooding, equivalent gas rate, recovery degree, enhanced maximum recovery rate, chart