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合隆气田地质构造演化和地震反射特征表明,研究区地层组合由营城组底为界的两套子系统组成,为浅层次生气藏创造了有利条件。现阶段对泉一段砂体展布精细刻画,基于本区地质资料,采用约束稀疏脉冲反演方法,预测储层展布特征,通过储层类型,使用统计学划分出有利区。结果说明,泉一段有效储层主要分布于下段,厚度大、横向稳定分布,处构造高点和断裂附近天然气聚集程度高,有利区主要位于中东部。
The geotectonic evolution and seismic reflection characteristics of the Helong gas field show that the stratigraphic assemblages in the study area are composed of two sets of subsystems bounded by the Yingcheng Formation and create favorable conditions for shallow secondary gas reservoirs. Based on the geological data of this area, constrained sparse pulse inversion method is used to predict the distribution characteristics of reservoirs. According to the types of reservoirs, the favorable areas are divided according to the statistics. The results show that the effective reservoirs in the first section of Quanyuan are mainly distributed in the lower section. The thick reservoirs, the stable horizontal distributions, the structural highs and the high degree of natural gas accumulation in the vicinity of the faults are mainly located in the middle and eastern parts.