Experimental and simulation studies for optimization of waterealternating-gas(CO2)flooding for enhanced oil recovery
作者机构：DrillingCementing and Stimulation Research CenterSchool of Petroleum TechnologyPandit Deendayal Petroleum UniversityGandhinagarGujarat382007India
出 版 物：《Petroleum Research》 (石油研究（英文）)
年 卷 期：2020年第5卷第3期
页 面：227-234页
学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程]
主 题：Water-alternating-gas injection Minimum miscibility pressure Enhanced oil recovery WAG ratio WAG cycle
摘 要：The paper deals with the screening of injection of water-alternating-gas(WAG)to tap the residual oil saturation left in the reservoir by over and above the water *** detailed mineralogical composition has been studied by X-ray diffraction(XRD)method along with the petrophysical parameters to see their impacts of flow on Himmatnagar(India)***,aromatics,resins,and asphaltenes present in the crude oil were determined by ASTM *** miscibility pressure of CO2 with the crude oil was determined and it has been found at 1254 psi based on thermodynamic *** WAG ratios of 1:1,1.5:1 and 2:1 have been applied for EOR during *** on water injection followed by CO2 has been performed for investigation of the WAG process efficiency.A total 2 cycles of WAG injection was done with water flow rate of 1 ml/min and gas injection pressure around 1250 psi to achieve the better contact *** experimental data has been generated,compiled and interpreted during different cycles of WAG *** was observed that WAG ratio 2:1 exhibits highest additional oil recovery around 34%of original oil in *** WAG ratio yields more additional oil recovery.
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