Research on the recovery efficiency of crude oil in tight reservoirs with different pore sizes

被引：0
|
作者：
Zhou, Xiaofeng [1 ,2 ,3 ]
Zhang, Guolu [4 ]
Wei, Jianguang [1 ,2 ,3 ]
Li, Zhuang [5 ]
Shamil, Sultanov [6 ]
Jiang, Guochao [7 ]
Chen, Yinghe [8 ]
Zhang, Yanyan [9 ]
Yang, Siqi [1 ,10 ]
Wu, Jie [5 ]
机构：
[1] Northeast Petr Univ, State Key Lab Continental Shale Oil, Daqing 163318, Heilongjiang, Peoples R China
[2] Northeast Petr Univ, Minist Educ, Key Lab Continental Shale Hydrocarbon Accumulat &, Daqing 163318, Peoples R China
[3] Northeast Petr Univ, Inst Unconvent Oil & Gas, Daqing 163318, Peoples R China
[4] China Natl Petr Corp, Liaohe Oilfield Co Branch, RongXing Oil & Gas Dev Corp, Panjin 124010, Peoples R China
[5] GWDC Drilling Engn & Technol Res Inst, Panjin 124009, Peoples R China
[6] Ufa State Petr Technol Univ, Dept Geol & Explorat Oil & Gas Fields, Ufa 450064, Russia
[7] 8 Oil Prod Plant Daqing Oilfield Co Ltd, Daqing 163514, Peoples R China
[8] CNOOC China Co Ltd, Tianjin Branch, Tianjin 300450, Peoples R China
[9] Third Oil Plant Daqing Oilfield Co Ltd, Daqing 163000, Heilongjiang, Peoples R China
[10] Northeast Petr Univ, Sch Petr Engn, Daqing 163318, Heilongjiang, Peoples R China
来源：
ENERGY | 2024年 / 306卷
关键词：
Tight oil reservoir; Pores of different sizes; Oil recovery rate; Pressure and imbibition; Soaking time; REAL-GAS MIXTURE; SPONTANEOUS IMBIBITION; TRANSPORT; NANOPORES; INJECTION; MODEL;
D O I：
10.1016/j.energy.2024.132404
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Tight reservoirs are rich in microscale pores, and the fluid flow mechanisms are extremely complex. In this paper, firstly, by using the high-temperature and high-pressure static and dynamic throughput experimental equipment and nuclear magnetic resonance instrument, the effects of pressure and imbibition medium on the recovery rate and total recovery rate of different pore sizes under static imbibition conditions of rock cores are studied. Secondly, the effect of soaking time on the recovery rate and total recovery rate of pores with different sizes under dynamic throughput conditions is studied. Results show that: (a) Under static imbibition conditions, pressurization can improve the total recovery efficiency of the two imbibition systems and shorten the imbibition equilibrium time. (b) Under static imbibition conditions, pressurization will reduce the degree of crude oil utilization in microscale pores and macroscale pores, and increase the degree of crude oil utilization in small and mesoscale pores. (c) As the imbibition pressure increases, PAM type slick water reaches the imbibition displacement equilibrium faster than anionic non-ionic surfactants
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页数：13
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