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商河地区为自北向南成明显阶梯状分布的多级构造调节带及多级坡折带,受其构造特征影响,储层特征也表现出明显的规律性。通过对商河地区大量储层物性数据的统计,结合镜下薄片观察发现商河油田具有同一层位,自北向南,商一区、商二区、商三区、商四区储层物性依次变差的特点;而对于同一地区,整体上自上向下随深度增加储层物性逐渐变差;同一层位不同沉积微相的储层具有不同的物性特征,三角洲前缘河口坝砂体储层物性最好,水下分支河道较好,而远砂坝、席状砂砂体储层物性相对较差。经综合研究分析认为储层特征主要受沉积相及成岩作用共同影响,储层成岩作用主要受地层埋深的影响,而由于商河地区的分界大断层主要为同沉积断层,地层厚度和沉积相分布主要受同生断层活动的影响,因此构造作用的同沉积断层是商河地区储层物性的主要控制因素。
The Shanghe area is a multistage tectonic adjustment zone and a multistage slope break zone distributed from north to south with obvious step distribution. Due to its tectonic features, the reservoir characteristics also show obvious regularity. Based on the statistics of a large number of reservoir physical properties in Shanghe area and the observation of microscopic thin sheets, it is found that the Shanghe oilfield has the same horizon. From the north to the south, the reservoir physical properties of Shangyi, Shang2, Shangsan, While in the same area, the physical properties of the reservoir gradually deteriorate as the depth increases from the top to the bottom in the same area. Reservoirs with different sedimentary microfacies in the same layer have different physical characteristics. The delta front sandbody The physical properties of the best, sub-river channel is better, and far sand bar, sandy sand sand reservoir properties are relatively poor. The comprehensive study shows that the reservoir characteristics are mainly affected by both sedimentary facies and diagenesis, and the diagenesis of reservoirs is mainly affected by the depth of the strata. However, the major faults in the Shanghe area are mainly the same sedimentary faults, the thickness of sedimentary facies and the sedimentary facies The distribution is mainly affected by the activity of the syngenetic fault, so the tectonic synsedimentary fault is the main controlling factor of the reservoir physical property in the Shanghe area.