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本文通过对现今构造对上下亚段气水关系的影响、储层的非均质性对须四上亚段气水产出的影响、断层的作用及裂缝发育的高孔隙砂岩对产能的影响,这四个方面对新场气田须四段成藏主控因素进行分析,得出现今构造对气水分布具有一定的控制作用,裂缝与较好的砂岩储层相配套复合形成的裂缝-孔隙型储层是须四下亚段天然气藏的主力储层类型,只有裂缝发育的具有一定厚度的高孔隙砂岩才是下亚段要寻找的目标。
Based on the influence of the current structure on the relationship between gas and water in the upper and lower sub-layers, the influence of reservoir heterogeneity on the gas and water production in the upper Xu 4 Member, the effect of faults and the production of fractured high-porosity sandstone, From the four aspects, the controlling factors of the Xisi Member formation in the Xinchang gas field are analyzed. It is concluded that the present structure has some control over the distribution of gas and water. The fractures are fractured with the better sandstone reservoirs. The layer is the main type of reservoirs to be sub-divided into four sub-sections. Only the high-porosity sandstone with a certain thickness of fractures is the target to be sought in the next sub-section.