The injection pattern investigation of hydrocarbon gas enhanced oil recovery in heterogeneous reservoirs

被引：0
作者：
Zhou, Wei [1 ,2 ]
Li, Ao [3 ]
Tang, Hongjiao [1 ]
Zhang, Yu [3 ]
Liang, Baoxing [1 ]
He, Yuexiang [4 ]
Yin, Long [5 ]
机构：
[1] PetroChina, Expt Test Res Inst Xin Jiang Oilfield Co, Karamay, Peoples R China
[2] Xinjiang Lab Petr Reserve Conglomerate, Karamay, Peoples R China
[3] China Univ Petr, Coll Chem Engn & Environm, State Key Lab Heavy Oil Proc, Beijing, Peoples R China
[4] Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing, Peoples R China
[5] Qiqihar Inspect & Testing Ctr, Qiqihar, Peoples R China
来源：
PETROLEUM SCIENCE AND TECHNOLOGY | 2024年
关键词：
Enhance oil recovery; gas injection method; heterogeneous reservoirs; hydrocarbon gas flooding; minimum miscibility pressure; FRACTURED RESERVOIRS; SOLVENT INJECTION; WAG; OPTIMIZATION; PERFORMANCE;
D O I：
10.1080/10916466.2024.2387161
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Considering the large difference in physical properties and low water flooding efficiency of heterogeneous reservoirs, the hydrocarbon gas flooding to enhance oil recovery was investigated. Through the rising bubble apparatus experiment, it was determined that the injected gas and crude oil are immiscible under formation conditions. On the other hand, the displacement experiment carried out on a long core was used to perform the effect of hydrocarbon gas flooding. According to displacement experiment, alternative injection of gas as slugs with water slugs can mobilize the residual oil in place in the reservoirs. When the gas injection rate is 0.5 cm3/min, the recovery efficiency of hydrocarbon gas flooding is highest. At the same time, the lower of water content, the better the timing of waterflooding to gas flooding. In experiments with slugs of different gas-water ratios, when the gas-water ratio is 1:1, the oil recovery efficiency is the highest. The water alternate gas in use within limit adaptation could significantly enhance the residual oil recovery and bring more economic benefits.
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页数：18
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