目前对南海崖城13-1气田储层非均质性的认识还不清楚，气田储量动用程度较低，动态、静态地质储量差异较大。因此，利用岩心、测井和地震等资料对崖城13-1气田的主力生产层位进行沉积微相和储层特征开展综合研究尤为重要。崖城131气田勘探目的层段为古近系渐新统陵三段，主要形成于海陆过渡环境，发育辫状河三角洲，沉积亚相主要为上三角洲平原、下三角洲平原、三角洲内前缘和三角洲外前缘。储集砂体主要为中—粗砂岩和含砾粗砂岩，其沉积微相为水下分流河道、河口坝和远砂坝。储层物性较好，孔隙度大于10%。储层物性主要受控于压实作用、溶蚀作用和沉积微相。

The previous studies on reservoir heterogeneity for the  Yacheng13-1 gas field are not very convincing; the reserves of some areas are not produced very well; the difference between dynamic and static geological reserves is obvious. Therefore, it is very important to do research on depositional facies and characteristics of the  Yacheng13-1 gas field in detail using the well coring, logging data and seismic data adequately, particularly on the major pay zone, the third Member of the Lingshui Formation (Lingshui Ⅲ). Lingshui Ⅲ belongs to marine-shore transitional environment, its depositional facies is braided delta. The main reservoirs are medium\|coarse sandstone and conglomeratic coarse sandstone, and the sedimentary micofacies are distributary channel, mouth bar, and distal bar. The reservoir properties are good and porosity is larger than 10%. The reservoir properties are controlled by microfacies, later compaction, and corrosion.