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用现场测试、选层注汽资料和数值模拟方法，研究了辽河油田齐40块直井蒸汽吞吐后期油层剩余油分布。在此基础上，以经济指标为目标函数，重点对水平井与现有直井的组合方式、开采方式、注采参数方案进行了优选。结果表明：蒸汽吞吐阶段，射孔井段上部油层剩余油饱和度为49．9％～52．3％，下部为54．7％～62．0％；水平井组注蒸汽开采的采收率较直井组可提高12．68％，热油比提高0．2627kg／kJ．
By field test, layer selection of steam injection data and numerical simulation, the distribution of remaining oil in the late stage of steam stimulation of Qi 40 vertical wells in Liaohe Oilfield was studied. On this basis, the economic index is taken as the objective function, and the combination mode, mining mode and injection-injection parameter scheme of horizontal well and existing vertical well are optimized. The results show that in the steam huffing stage, the residual oil saturation in the upper part of perforating interval is from 49.9% to 52.3% and from 54.7% to 62.0% in the lower part of perforating interval. The recovery rate of injection for steam injection Compared with the vertical well group, it can be increased by 12.68% and the hot oil ratio increased by 0.2627kg / kJ.