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四川盆地嘉陵江组三—四段气藏,主要分布在泸州古隆起核部周边及其延伸部分,而于古隆起核部则未获一个气藏。究其原因,主要是由于该储层自身缺乏生气条件;从气源层又无向上断达嘉三—嘉四段储层的断层存在;古隆起核部因曾遭受早印支运动强烈的剥蚀,已无嘉四段良好的石膏岩作盖层。研究认为,嘉三—嘉四段储层是以古岩溶缝、洞为基础,几经演变后,并为晚期构造和构造缝复杂化了的储层,其储集空间并不受构造的限制,即使是向斜也可能有古岩溶缝洞和裂缝存在,勘探领域相当宽广。因此,进一步勘探主要应放在该古隆起核部周边及其向西和向东延伸的地区。
The Jialingjiang Formation gas pools in the Sichuan Basin are mainly distributed around the periphery of the Luzhou paleo-uplift and its extension, while not in the paleo-uplift. The reason is mainly due to the fact that the reservoir itself is lack of anaerobic conditions. There is no fault up to the Jia-San-Jia-4 Member reservoir from the gas source layer. The paleo-uplift core suffered strong erosion due to the Early Indosinian Movement , There is no good four sections of gypsum rock for cover. The study shows that the reservoir of the Ka-San-Jia-4 Member is based on palaeokarst cracks and holes. After several evolutions, it is a reservoir that is complicated by late tectonics and structural seams. Its reservoir space is not limited by the structure. Even synclinal karst fractures and cracks may exist, and the field of exploration is quite broad. Therefore, further exploration should mainly be located in the vicinity of the paleohigh core and in areas that extend west and eastwards.