Two-Phase Fluid Flow Characterizations in a Tight Rock: A Fractal Bundle of the Capillary Tube Model
Two-Phase Fluid Flow Characterizations in a Tight Rock: A Fractal Bundle of the Capillary Tube Model
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致密岩石中的两相流体流动特征：毛细管模型的分形束
DOI：
10.1021/acs.iecr.9b04328
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发表时间：
2019-10
影响因子：
4.2
通讯作者：
Liu Chang
中科院分区：
文献类型：
--
作者：
Li Ying;Li Haitao;Chen Shengnan;Ma Qirui;Liu Chang
动力效应、边界滑移和边界层的存在会影响多相流体在致密岩体中的流动。本文提出了一种分形束毛细管模型，将上述因素纳入致密多孔介质中两相流体的流动表征。该模型已通过岩心驱油试验数据成功验证，证明了该模型在描述致密储层生产动态方面的有效性。此外，通过敏感性分析量化了动力效应、边界滑移、边界层和注入压力对致密地层采收率的影响。结果表明，在预测生产动态时应考虑动力效应和边界层，而边界滑移可以忽略不计。在边界层存在的情况下，如果忽略动力效应，预测采收率比实际值高出23%。
The multiphase fluid flow in the tight rocks can be affected by the existences of the dynamic effect, boundary slip and boundary layer. In this work, a fractal bundle of the capillary tubes model is proposed to incorporate the above-mentioned factors into the two-phase fluid flow characterization in tight porous media. The model has been successfully validated by the experimental data from core-flooding tests, demonstrating its effectiveness to describe the production behavior in tight reservoirs. In addition, sensitivity analysis is conducted to quantify the effects of the dynamic effect, boundary slip, boundary layer and injection pressure on the oil recovery of the tight formations. Results indicate that the dynamic effect and boundary layer should be taken into consideration when predicting the production behavior, while the boundary slip can be neglected. The predicted recovery can be as high as 23% higher than its actual value if neglecting the dynamic effect while the existence of the boundary laye...
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