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川中磨溪—龙女寺构造带下三叠统嘉陵江组碳酸盐岩储层岩性种类较多,夹有石膏层且储层普遍含水,使得流体的判识比较困难。另外,嘉陵江组流体分布规律不明显,控制因素复杂。在深入分析不同流体测井响应特征的基础上,用定性和定量2种方法对流体性质进行判识,建立起适合于研究区的流体判识模型。然后,对流体分布特征进行分析,并对影响流体分布的控制因素加以探索,认为储层物性和构造幅度是控制流体分布的主控因素,而储层内部较强的非均质性是造成流体分布复杂的原因。
There are more lithologic types of carbonate reservoirs in the Lower Triassic Jialingjiang Formation in the Moxi-Longxisi tectonic belt of the Central Sichuan Basin. Gypsum layers are trapped and the reservoirs generally contain water, making the identification of fluids more difficult. In addition, the Jialing River fluid distribution law is not obvious, the control factors are complicated. On the basis of deeply analyzing the logging response characteristics of different fluids, two kinds of methods, qualitative and quantitative, were used to identify the fluid properties and establish a fluid identification model suitable for the study area. Then, the fluid distribution characteristics are analyzed, and the control factors influencing the fluid distribution are explored. It is considered that reservoir physical properties and structure amplitude are the main controlling factors for fluid distribution, and the strong heterogeneity inside the reservoir is the cause of fluid The reason for the complex distribution.