【摘要】 葡萄花油田利用CO₂吞吐进行采油研究结果表明,在油层条件下,液态的CO₂能够快速汽化并溶于原油中使储集层孔隙压力增高,局部地区油层的弹性能量增加,从而提高现井网注来关系无法完善的孤立砂体中的剩余油藏的采收率。根据大庆葡萄花油田地质条件及开发现状,在现场试验2口井,见到了较好的增油效果。更多还原

【Abstract】 The result of production by CO2 soak in Putaohua Oilfield shows that under reservoir conditions CO2 fluid will vaporize promptly and solve in crude oil to raise pore pressure in reservoir, increase elastic energy of reservoirs in local area, thus to enhance oil recovery of residual oil in isolated sandbody, which would not be completed in current stimulation well patterns. According to the geologic conditions and production situations in Daqing Putaohua Oilfield, field test is conducted in 2 wells with good efficiency of oil production increase.更多还原