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J16块为一被南、北两条正断层夹持的背斜构造,储层岩性以细砂岩及含砾不等粒砂岩为主,属高孔、高渗储层。油层埋深1010～1132m,平面上连片分布,构造高部位油层最发育。在建立J16块储层地质模型中,主要以该区地震解释的断层数据和层面数据以及单井的分层数据为输入数据源,利用PETREL软件建立构造模型,以构造模型提供的地层格架,采用确定性建模方法,建立沉积微相模型;在微相模型基础上,采用相控建模技术,利用顺序高斯模拟方法,建立储层的物性参数模型,并根据有效储层的孔隙度、渗透率下限值进行截断,得到有效储层的三维模型。采用容积法,分层、分段进行储量计算,计算结果与原始储量计算结果基本一致。根据油藏特点及数值模拟技术的要求,设计数值模拟网格系统,将精细的地质模型转换为油藏数值模拟静态模型,满足了油藏数值模拟研究的要求。
J16 block is an anticline structure sandwiched by two normal faults in the south and north. The lithology of the reservoir is mainly composed of fine sandstone and pebbled sandstone, which belongs to high-porosity and high-permeability reservoirs. The oil layer depth is 1010 ~ 1132m, contiguous in plane and high in the structural part. In the establishment of J16 reservoir geological model, the fault data and level data interpreted by the earthquake and the single-well stratified data are taken as input data source. The PETREL software is used to establish the structural model to construct the stratigraphic framework provided by the model. The sedimentary microfacies model is established by deterministic modeling method. On the basis of the microfacies model, the phased modeling technique is used to establish the physical property parameter model of the reservoir by using the sequential Gaussian simulation method. Based on the porosity of effective reservoirs, Cut off the lower limit of permeability to get the 3D model of effective reservoir. Volume method, stratification and subdivision are used to calculate the reserves, and the calculated results are basically the same as those of the original reserves. According to reservoir characteristics and numerical simulation technology, a numerical simulation grid system is designed to transform the fine geological model into a reservoir numerical simulation static model, which meets the requirements of reservoir numerical simulation research.