For the development of offshore horizontal wells, the study of remaining oil should be based on clear main control factors. Research on residual oil distribution under main control factors by numerical simulation method,the research showed that for the oilfields which developed by horizontal wells predominantly, the main controlling factor of remaining oil should be clear as the basis of numerical simulation. in this paper, both the position and digging direction of the enrichment of remaining oil were summarized, it also gives the conclusion that physical conditions, sedimentary microfacies, interlayer, development method were the most important influence factors on remaining oil which characterize the oilfield. Among them, the remaining oil in the interlayer interlayer and multi⁃stage river channel superposition control is the heaviest, which is the main target for future adjustment and potential tapping.

        为了得到针对海上河流相油田的高效、高速开发模式,首先基于渤海Y 油田的地质及开发特点,从4个方面论述了该油田的开发模式,分别为精细注水保持地层压力、基于单砂体划分和组合开发层系、依托单砂体井网优化技术调整井网以及提液与控水相结合的综合调整。利用相关油藏工程方法,计算并评价了在渤海Y 油田的开发模式下进行生产的各个指标的开发效果,根据单指标计算结果,进行开发效果综合评价。结果表明,渤海Y 油田的开发模式适用于大多数海上河流相油田,应用该开发模式能够有效地缩短海上油田的开发年限以及提高油田最终采收率。