当前位置：
X-MOL 学术
›
Energy Sci. Eng.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Experimental study on the enhanced oil recovery by in situ foam formulation
Energy Science & Engineering ( IF 3.5 ) Pub Date : 2020-01-09 , DOI: 10.1002/ese3.570 Hailong Chen 1, 2 , Zhaomin Li 1 , Fei Wang 3 , Aixin Li 1 , Silagi Wanambwa 1 , Teng Lu 1
Energy Science & Engineering ( IF 3.5 ) Pub Date : 2020-01-09 , DOI: 10.1002/ese3.570 Hailong Chen 1, 2 , Zhaomin Li 1 , Fei Wang 3 , Aixin Li 1 , Silagi Wanambwa 1 , Teng Lu 1
Affiliation
|
In situ CO2 foams (ISCF) are studied systematically by combining in situ CO2 gas reactants (carbonate anhydrous, hydrochloric acid) and bio‐based surfactant. Sandpack flooding experiments at 60°C along with PVT experiments were carried out to analyze the oil displacement mechanisms. The results showed that ISCF could increase oil recovery from heterogeneous multilayer formation of permeability ratio over 6, and displacement efficiency increased with the injection volume increased before the injection of 1 PV. The incremental oil recovery by ISCF was much greater than that of conventional foam or in situ CO2 (ISC) without foam under the same injection conditions. The generated CO2 foam could reduce the interfacial tension between displacement phase and displaced phase effectively which contributed to the great increase in capillary number. The CO2 dissolution greatly reduced the viscosity of crude oil, and the highest viscosity reduction rate at 60°C could be as high as 98%. The Ca2+ concentration of produced liquids analysis revealed the ISCF could distribute intelligently the acid in heterogeneous formations.
中文翻译：
原位泡沫配方提高采收率的实验研究
通过将原位CO 2气体反应物（无水碳酸盐，盐酸）和生物基表面活性剂相结合，系统地研究了原位CO 2泡沫（ISCF）。进行了60°C的沙堆注水实验以及PVT实验，以分析驱油机理。结果表明，在注入1 PV之前，ISCF可以提高渗透率的非均质多层结构的采收率，并且随着注入量的增加驱替效率也随之提高。在相同的注入条件下，通过ISCF进行的增量采油量要远远大于不使用泡沫的传统泡沫或原位CO 2（ISC）。产生的CO 2泡沫可以有效地降低驱替相与驱替相之间的界面张力，从而极大地增加了毛细管数。CO 2的溶解极大地降低了原油的粘度，并且在60°C时最高的粘度降低率可高达98％。产出液的Ca 2+浓度分析表明，ISCF可以智能地将酸分布在非均质地层中。
更新日期：2020-01-09
中文翻译：
原位泡沫配方提高采收率的实验研究
通过将原位CO 2气体反应物（无水碳酸盐，盐酸）和生物基表面活性剂相结合，系统地研究了原位CO 2泡沫（ISCF）。进行了60°C的沙堆注水实验以及PVT实验，以分析驱油机理。结果表明，在注入1 PV之前，ISCF可以提高渗透率的非均质多层结构的采收率，并且随着注入量的增加驱替效率也随之提高。在相同的注入条件下，通过ISCF进行的增量采油量要远远大于不使用泡沫的传统泡沫或原位CO 2（ISC）。产生的CO 2泡沫可以有效地降低驱替相与驱替相之间的界面张力，从而极大地增加了毛细管数。CO 2的溶解极大地降低了原油的粘度，并且在60°C时最高的粘度降低率可高达98％。产出液的Ca 2+浓度分析表明，ISCF可以智能地将酸分布在非均质地层中。
京公网安备 11010802027423号