苏里格气田25区块盒8段基于水动力能量的沉积微相展布

为了更精确地预测苏里格气田下二叠统下石盒子组盒8段辫状河有效砂岩储集层的分布，指导气田有效开发，开展了基于水动力能量的辫状河沉积微相展布研究。建立了苏里格气田下石盒子组盒8段辫状河储集层单一河道砂体边界的识别标志和砂体叠置模式，划分对比单一河道砂体；分析辫状河不同沉积微相的测井响应特征，建立了研究区岩电相转换模型及单井沉积微相类型；利用自然伽马与补偿中子曲线包络特征，重构水动力指数曲线，并以水体能量厚度平面展布为约束，精细刻画了沉积微相的平面展布特征。实际应用结果表明，有效砂体分布的预测结果与实钻结果吻合度较高，可有效指导气田的开发部署。

Hydrodynamic Energy-Based Sedimentary Microfacies Distribution of He-8 Member of Lower Shihezi Formation in Block-25, Sulige Gas Field

In order to more accurately predict the distribution of effective sandstone of braided channel reservoir of He?8 member of Lower Shihezi formation in Sulige gas field, and guide its efficient development, this paper studies the braided channel sedimentary microfacies distribution based on hydrodynamic energy. The identification signs and overlapping model for single channel sand bodies in braided river reservoir of He?8 member of the Lower Shihezi formation in Sulige gas field were established to make classification and correlation of these sand bodies. The logging response features of its different sedimentary micofacies were analyzed to develop the transformation model from cores to logs and single well sedimentary microfacies types in the study area. The enveloped characteristics of GR and CNL logs were used to reconstruct the hydrodynamic index curve, and finely describe the planar distribution of the sedimentary microfacies constrained by wa?ter energy thickness distribution. The result shows that the predicted results of effective sands distribution are very closed to that from real drilling application, which can provide effective guide for the gas field development and well deployment