论文部分内容阅读
盆地内地层流体—岩石相互作用导致储层特征和流体性质发生变化 ,影响油气藏的形成与分布。本文分析了东营凹陷下第三系地层孔隙流体的化学和动力学特征及其分布规律 ,根据地层中矿物的组成和结构特征对成岩过程中地层古流体的地球化学特征进行了推测。并通过对典型油田泥岩层和砂岩层中矿物组合及其在地层剖面上的变化规律的实例剖析 ,揭示了东营凹陷下第三系储层中流体—岩石相互作用的基本特点 ,在此基础上 ,建立储层中流体—岩石相互作用的地质 /地球化学模型。
Fluid-rock interaction in the basin leads to changes in reservoir characteristics and fluid properties that affect the formation and distribution of oil and gas reservoirs. This paper analyzes the chemical and kinetic characteristics and distribution of pore fluid in the Lower Tertiary strata in Dongying Sag. The geochemical characteristics of paleo-hydrofacies in diagenesis are presumed according to the composition and structure of the minerals in the strata. Based on the analysis of the mineral assemblages in the mudstones and sandstones of typical oilfields and their variations in stratigraphic profiles, the basic characteristics of the fluid-rock interaction in the Lower Tertiary reservoirs of the Dongying depression are revealed , To establish a geologic / geochemical model of fluid-rock interaction in the reservoir.