中文摘要：

营四段致密砂砾岩是松辽盆地徐家围子断陷深层天然气勘探的主要目标。为了在地下处于高温、高压环境的致密砂砾岩储层中，寻找物性甜点，预测优质储层的分布，讨论沉积相和成岩作用对营四段砂砾岩储层孔隙度和渗透率的综合影响，应用成岩作用数值模拟技术，预测成岩阶段的横向展布，结合前人沉积相的研究成果，预测营四段致密砂砾岩4类储层在平面上的展布。研究结果表明：不同沉积相的砂砾岩体处于不同的成岩阶段就形成了4种不同类型的储层（Ⅰ，Ⅱ，Ⅲ和Ⅳ类）。徐家围子断陷目前已发现的工业气流井主要位于Ⅰ和Ⅱ类优质储层中，低产气流井主要分布在Ⅲ类储层存在的范围内。

英文摘要：

The tight glutenites of Member 4 of Yingcheng Formation are the main gas exploration targets in Xujiaweizi Fault Depression, Songliao Basin. To predict the property sweet points and the high-quality reservoirs in the deep tight glutenites at high temperature and under high pressure, the integrated effects of sedimentary facies and diageneses on the porosity and permeability of the reservoirs were studied, and the reservoir types of the Member 4 of the Yingcheng Formation were predicted laterally by diagenetic numerical modeling combined with the sedimentary facies. The results show that the glutenites of the different sedimentary facies locate in the different diagenetic stages form 4 kinds of different reservoirs, typeⅠ, typeⅡ, type Ⅲ and type Ⅳ. At present the wells producing commercial gas flows are mainly distributed in the reservoirs of high-quality reservoir, typeⅠor typeⅡ, and the wells producing low-yield gas flows are mainly distributed in the reservoirs of type Ⅲ.