Enhanced Heavy Oil Recovery by Calcium Hydroxide Flooding with the Production of Viscoelastic Materials: Study with 3-D X-Ray Tomography and 2-D Glass Micromodels
Enhanced Heavy Oil Recovery by Calcium Hydroxide Flooding with the Production of Viscoelastic Materials: Study with 3-D X-Ray Tomography and 2-D Glass Micromodels
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DOI：
10.1021/acs.energyfuels.1c00963
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发表时间：
2021-07
期刊：
影响因子：
5.3
通讯作者：
M. Mahardika;Yun She;Fujiura Shori;Anindityo Patmonoaji;Shintaro Matsushita;T. Suekane;Y. Nagatsu
中科院分区：
文献类型：
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作者：
M. Mahardika;Yun She;Fujiura Shori;Anindityo Patmonoaji;Shintaro Matsushita;T. Suekane;Y. Nagatsu
在这项研究中，氢氧化钙（Ca（OH）2）驱油（CHF）的性能进行了研究与三维（3-D）实验与微型计算机断层扫描和二维（2-D）微观模型实验。在CHF的3-D实验中，在高毛细管数下发生两个阶段的驱替。首先，条纹状图案的粘性指进发展到出口的填充床。之后，稳定的驱替前缘沿流动方向传播，并导致原油采收率> 50%的初始原油。在稳定位移前沿的传播过程中，沿多孔介质沿着建立高压降。如果CHF后再进行注水，稳定前缘不会扩展，产量迅速下降。对于非均质层状多孔介质的所有渗透率比，CHF的采收率比WF高约30%。我们成功地证明了在均匀多孔介质和非均匀分层介质中CHF可以显着改善。二维微观模型实验表明，一个神经节的Ca（OH）2斑点和折叠膜推出稠油在孔隙规模在一个稳定的驱替前沿。
In this study, the performance of calcium hydroxide (Ca(OH)2) flooding (CHF) was investigated with three-dimensional (3-D) experiments with microcomputed tomography and two-dimensional (2-D) micromodel experiments. In 3-D experiments for CHF, two stages of displacement occurred at high capillary numbers. First, streak-like patterns of viscous fingering developed up to the exit of the packed bed. After that, a stable displacement front propagated in the flow direction and resulted in an oil recovery of >50% of the initial oil in place. During the propagation of the stable displacement front, a high-pressure drop was established along the porous media. If CHF is followed by water flooding (WF), the stable front did not propagate and oil production declined promptly. CHF oil recovery is higher by approximately 30% than that of WF for all permeability ratios of heterogeneous layered porous media. We successfully demonstrated that CHF could improve significantly in homogeneous porous media and heterogeneous layered media. 2-D micromodel experiments suggest that a ganglion of Ca(OH)2blobs and folded membranes pushed out heavy oil at pore scale in a stable displacement front.