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鄂尔多斯盆地西缘前陆盆地区二叠系天然气资源丰富,查清其储层发育规律对该区天然气勘探具有重要意义。基于动力储层地质学研究思路,结合鄂尔多斯西缘前陆盆地区二叠系沉积体系、构造演化史和地层流体动力场研究,本文对鄂尔多斯西缘盆地动力特征对储层发育的控制作用进行了初步分析。研究表明,中生代前陆盆地构造运动期,二叠系砂岩主要处于早成岩阶段,前陆盆地构造运动对储层发育具有重要的影响;在沉积动力作用过程、构造动力作用过程、热动力作用过程和流体动力作用过程的联合下,西缘前陆盆地区发育泥煤系地层水溶蚀边箱,并且不同构造带二叠系砂岩具有不同的动力演化模式。
The Permian natural gas resources are abundant in the foreland basin in the western margin of the Ordos Basin. It is of great significance to ascertain the law of reservoir development for natural gas exploration in this area. Based on the research thought of dynamic reservoir geology and the study of Permian sedimentary system, tectonic evolution history and formation fluid dynamic field in the foreland basin of the western Ordos Basin, this paper carried out a study on the controlling effect of dynamic characteristics of the western Ordos Basin on reservoir development initial analysis. The results show that during the tectonic movement period of the Mesozoic foreland basin, the Permian sandstone is mainly in the early diagenetic stage and the tectonic movement of the foreland basin has an important influence on the reservoir development. During the depositional dynamic process, the tectonic dynamic process, the thermodynamic process And hydrodynamic processes, the pelagic water-faulted side-basins are developed in the foreland basin of the western margin, and the Permian sandstones in different tectonic zones have different dynamic evolution modes.