低渗透岩性气藏含水特征分析与测井识别技术——以苏里格气田为例

鄂尔多斯盆地苏里格地区上古生界发育低渗透砂岩岩性气藏。随着苏里格气田勘探向北部、西部的拓展，在大面积含气背景下，部分井、层出现不同程度的产水，出水井产水量大小、含水特征各异，平面分布规律复杂，影响了单井产量的提高和储量评价工作。为此，以苏里格气田为例，从低渗透岩性气藏成藏机理出发，分析了气藏充注不充分的条件下低渗透岩性气藏的含水特征，结合储层微观、宏观非均质特征，明确了束缚水、层间水和滞留水３种地层水赋存状态，分析了其测井响应特征及识别方法，结合试气工艺方案的优化，提出了有针对性的气层改造措施，以期达到控水增气的目的。

Water-cut characteristic analysis and well logging identification methods for low-permeability lithologic gas reservoirs:A case study of the Sulige Gas Field

The Upper Paleozoic low-permeability sandstone lithologic gas reservoirs are well developed in the Sulige Gas Field,Ordos Basin.With the keep going of further gas exploration to the north and the west of this field,water-cut has become a serious problem in some wells and some reservoirs to different degree.Obviously,the per-well production and reserves evaluation will be influenced by the water quantity from the water-cut wells,different water-cut characteristics,and complicated regularities of two-dimensio...