The result shows that the reasonable total amount of CO 2 is 15%HCPV, and the optimum injection style is suggested as tapering WAG (water alternating gas).

• 研究结果表明 ,试验区对CO2 驱有较好的适应性。 CO2 合理用量为 15%25HCPV ,最佳注入方式为段塞尺寸逐渐减小的改进交替注气水方式。