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苏里格气田东南部位于陕北斜坡中北部,盒8段是其重要产气层位。本文综合前人研究成果,通过对岩石颜色、粒度、沉积构造、古生物特征等多种手段综合分析,认为苏东南地区盒8段为辫状河三角洲沉积体系。并在此基础上充分利用测井资料进行分析,绘制了该区沉积剖面图和沉积相平面展布图。研究成果对该区储层预测,气藏井滚动勘探开发提供了地质依据。
The southeastern Sulige gas field is located in the north-central part of the northern Shaanxi slope. The eighth member of the Sulige gas field is an important gas-producing layer. Based on the results of previous studies, by comprehensive analysis of rock color, grain size, sedimentary structure, paleontology and other means, it is concluded that the box 8 of the southeastern region is a braided river delta sedimentary system. On the basis of this, the logging data are fully utilized for analysis, and the sedimentary facies profiles and sedimentary facies plane maps are plotted. The research results provide the geological basis for reservoir prediction and rolling exploration and development in gas reservoirs in this area.