基于裂缝性致密储层关键渗流参数的逆向渗吸速度计算

徐中一; 程林松; 曹仁义; 方思冬; 吴九柱; 庄永涛; 艾爽

doi:10.3799/dqkx.2017.108

Volume 42 Issue 8

Aug. 2017

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Article Navigation > Earth Science > 2017 > 42(8): 1431-1440

Xu Zhongyi, Cheng Linsong, Cao Renyi, Fang Sidong, Wu Jiuzhu, Zhuang Yongtao, Ai Shuang, 2017. Characterization of Key Tight Oil Parameters and Mass Transfer of Counter-Current Imbibition in Fractured Tight Oil Reservoirs. Earth Science, 42(8): 1431-1440. doi: 10.3799/dqkx.2017.108

Citation:

Xu Zhongyi, Cheng Linsong, Cao Renyi, Fang Sidong, Wu Jiuzhu, Zhuang Yongtao, Ai Shuang, 2017. Characterization of Key Tight Oil Parameters and Mass Transfer of Counter-Current Imbibition in Fractured Tight Oil Reservoirs. Earth Science, 42(8): 1431-1440. doi: 10.3799/dqkx.2017.108

Citation:

Xu Zhongyi, Cheng Linsong, Cao Renyi, Fang Sidong, Wu Jiuzhu, Zhuang Yongtao, Ai Shuang, 2017. Characterization of Key Tight Oil Parameters and Mass Transfer of Counter-Current Imbibition in Fractured Tight Oil Reservoirs. Earth Science, 42(8): 1431-1440. doi: 10.3799/dqkx.2017.108

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Characterization of Key Tight Oil Parameters and Mass Transfer of Counter-Current Imbibition in Fractured Tight Oil Reservoirs

doi: 10.3799/dqkx.2017.108

1.
College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
2.
Oil Production Technology Institute, Dagang Oilfield Company, PetroChina, Tianjin 300280, China
3.
Research Institute of Petroleum Engineering, SINOPEC, Beijing 100101, China

Received Date: 2017-04-27
Publish Date: 2017-08-15

Abstract

Abstract

During the process of tight oil exploration, counter current imbibition effect is significantly different due to the presence of complex fracture network and flow characteristics in tight oil reservoirs. But at present, there is no proper model to simulate counter-current imbibition in fractured reservoir considering the characteristics of tight oil formation. In order to solve this problem, PEBI grids are used to match the complex fracture network, natural fractures and matrix are idealized as dual-porosity medium, rate of mass transfer of imbibition between matrix and fractures is treated as source or sink term in dual porosity model. A new semi analytical model for the calculation of mass transfer function of counter-current imbibition in the presence of complex fracture network is established by using radial integration boundary element method (RIBEM). In addition, to reflect the flow characteristics of tight oil, relative permeability and capillary pressure curve with the effect of boundary layer considered, and mixed wettability have also used in the mass transfer model. Besides, we show the capacity and practical application of the model with a field example from tight oil reservoir. From simulated results, it is concluded that counter-current imbibition plays an important role in improving the oil recovery and the existence of boundary layer reduces the contribution of imbibition to oil production dramatically.
- tight oil reservoirs,
- fractured,
- counter current imbibition,
- radical integral boundary element method (RIBEM),
- dual porosity model in single permeability,
- petroleum geology

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References(28)

References

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Characterization of Key Tight Oil Parameters and Mass Transfer of Counter-Current Imbibition in Fractured Tight Oil Reservoirs

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