Investigation of the dynamic capillary pressure during displacement process in fractured tight rocks
Investigation of the dynamic capillary pressure during displacement process in fractured tight rocks
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致密裂隙岩驱替过程中动态毛细管压力研究
DOI：
10.1002/aic.16783
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发表时间：
2019
期刊：
影响因子：
3.7
通讯作者：
Liu Chang
中科院分区：
文献类型：
--
作者：
Li Ying;Li Haitao;Chen Shengnan;Luo Hongwen;Liu Chang
本文通过专门设计的裂隙岩心和完整岩心实验，研究了裂隙性致密岩石驱替过程中的动毛管压力。得到了基体的动态毛细系数和多相流动特性。结果表明，压裂处理后，基质的动毛管压力升高了5-20%左右。基质的动态毛细系数越小，变化越少，说明动力效应减弱，位移锋更加均匀。含水饱和度的时间导数随裂缝的增加而显著增大。最后，压裂后的原油相对渗透率低于完整岩心在高含水饱和度时的相对渗透率。建立了考虑裂缝影响的基质动态毛细系数模型，其平均值er2大于0.95。这有助于理解和预测裂缝性致密多孔介质中的多相流动。
This work investigates the dynamic capillary pressure during the displacement process in fractured tight rocks, through specially designed experiments on fractured and intact core samples. The dynamic capillarity coefficient of matrix and the multiphase flow behaviors are also obtained. Results have shown that the dynamic capillary pressure of the matrix becomes around 5–20% higher after the fracturing treatment. The lower and less variable values of dynamic capillarity coefficient of matrix illustrate a weakened dynamic effect and a more uniform displacement front. Moreover, time derivative of water saturation is increased significantly with fractures. Finally, oil relative permeability after fracturing is lower than its value of the intact core at high water saturations. A dynamic capillarity coefficient model for matrix, which includes the influence of fractures, is derived and verified with the averageR2more than 0.95. This wok helps to understand and predict multiphase flow in fractured tight porous media.
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DOI：
10.1007/bf00872519
发表时间：
1987-03
期刊：
Journal of engineering physics
影响因子：
--
作者：
G. I. Barenblatt;A. A. Gil'man-A.
通讯作者：
G. I. Barenblatt;A. A. Gil'man-A.
饱和度超调的多孔介质中的水流：综述
影响因子：
6.4
作者：
Yunwu Xiong
通讯作者：
Yunwu Xiong
影响因子：
2.1
作者：
Yang Wang;Shiqing Cheng;Kaidi Zhang;Youwei He;N. Feng;Jiazheng Qin;Le Luo;Haiyang Yu
通讯作者：
Yang Wang;Shiqing Cheng;Kaidi Zhang;Youwei He;N. Feng;Jiazheng Qin;Le Luo;Haiyang Yu
DOI：
10.1016/j.jngse.2016.05.005
发表时间：
2016-11-01
影响因子：
--
作者：
Liu, Jia;Wang, J. G.;Tang, Furong
通讯作者：
Tang, Furong
DOI：
10.2174/1874834101407010071
发表时间：
2014-07
期刊：
The Open Petroleum Engineering Journal
影响因子：
--
作者：
Ai-lin Jia;Z. Lv
通讯作者：
Ai-lin Jia;Z. Lv