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大气水-砂岩的相互作用是盆地流体研究的重要内容。大气水-砂岩的相互作用主要表现在两个方面。一方面,大气水在多孔介质中的流动导致碎屑矿物和成岩矿物的淋滤和再沉淀;另一方面,大气水的成分将缓慢地被“岩石”所改变。长石溶解与高岭石沉淀、稳定同位素和特征自生矿物是判断大气水-砂岩相互作用的主要标志。砂岩遭受大气水成岩作用与否和期次,取决于盆地的构造演化和砂岩在盆地中所处的位置。大气水-砂岩相互作用的研究对于在中国东部及东北亚中新生代含油气盆地中,寻找优质储层和油气伴生资源具有重要的指导意义。
Atmospheric water-sandstone interaction is an important part of fluid research in the basin. Atmospheric water - sandstone interaction mainly in two aspects. On the one hand, the flow of atmospheric water in porous media leads to leaching and reprecipitation of detrital minerals and diagenetic minerals; on the other hand, the composition of atmospheric water will slowly be altered by “rocks.” Feldspar dissolution and kaolinite precipitation, stable isotopes and characteristic authigenic minerals are the main indicators of atmospheric water-sandstone interaction. Whether or not the sandstone is subjected to atmospheric diagenesis depends on the tectonic evolution of the basin and the location of the sandstone in the basin. The study of atmospheric water-sandstone interaction has important guiding significance for finding good reservoirs and associated resources of oil and gas in the Meso-Cenozoic petroliferous basins in eastern China and Northeast Asia.