A Study On The Residual Oil Distribution And Tapping The Potential Deployment Plan Of C601X Block

The remaining oil distribution study is the main task in the later period of oil reservoir management.It is an important way to realize the development strategy of controlling water and stabilizing oil.With the increase of the difficulty and costs of exploration,it is more urgent and important to enhance oil recovery.The numerous practice of oilfield development show that the oil recovery ratio of waterflooding is generally only about 30%,and two thirds of the remaining oil reserves are still underground.Therefore,accurately evaluating the remaining oil saturation is important for tapping the potential of reservoir in the later development and impletmenting tertiary oil recovery.This technology has a broad prospect.According to the dynamic production data and test analysis reports in C601 X block,the research carrys out in aspects of layer series of development?well pattern?well spacing flexibility evaluation?subdivision of layer series of development and well pattern regrouping which is based on previous fine reservoir description study.Using the facies-controlled modeling technology,the numerical model in key block is established which is based on the improvement of the geological model.The study of intrastratal?interlayer and plane remaining oil distribution can be developed by dynamic analysis and numerical simulation.The remaining oil distribution mode with different sedimentary features is established.The qualitative and quantitative description of the remaining oil distribution from the aspects of water–out reservoir evaluation?residual oil saturation?remaining recoverable reserves abundance use the basic units of geological division,the rich area can be defined by summerising the law and the main factors affecting the distribution of remaining oil.The secondary development adjustment research mainly about subdivision of layer series?regrouping flooding pattern and local horizontal well producing is carried out.Comparing with the technical and economic index,the secondary development and deployment proposal of the block is proposed.According to the guidance of new wells deployment,the resevers producing degree and the development effect can be improved.