The Study On Architecture Analysis And Remaining Oil Distribution Patterns Of Meandering River Reservoir

In this paper, the data of coring, logging and performance of wells in NorthⅡWest Areawere used to analyze sedimentary characteristic of meandering river and establishthree-dimensional reservoir architecture model. Integrated use of multi-disciplinary theories,methods and techniques, we can have the research static and dynamic information and questmethod to research reservoir architecture of meandering river and distribution of meanderingriver, to guide research of distribution of meandering river in the period of high water cut.In the basis of the knowledge of Sequence stratigraphy and description of coreobservation,well logging and logging data, formation was divided and feature of well loggingwas identified; guided by the method of "Model predictions, the hierarchical control",sedimentary unit was divided in the vertical direction, Sedimentary microfiches weresubdivided in plane direction and reservoir architecture of point bar in the single river wasidentified; described by the classification of five levels, reservoir architecture of point bar wasanalyzed and representation model of reservoir architecture in sand of point bar was identified;in the basis of geological research and comprehensive utilization of confined core inspectionwells, oil wells hierarchical testing, logging flooded layer of interpretation and dynamic dataetc, using the method of dynamic analysis and development geology, we can analyzedistribution pattern of remaining oil in the different levels of the reservoir architecture,research in the paper shows that reservoir architecture of meandering river, the flow unit andperforating combination were a key factor to control the distribution of remaining oil, As wellas by the influence of gravity, multi-strong washed phenomenon appeared at the bottom ofmeandering river, and the enrichment of the remaining oil appeared at the top of positiverhythm.