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为寻找四川盆地南部老探区(以下简称蜀南地区)下一步勘探有利区带,系统分析确认该区基本地质特征,具有:多期构造旋回发展演化,沉积层系相对完整,多源供烃、多储层层系及圈闭类型、多期成藏及多个含油气系统等特点。通过对老井重新认识,结合勘探成效及研究成果,认为近期蜀南地区研究和勘探的重点是:①深化二叠系、三叠系勘探是目前“增储、上产”的关键;②主攻上三叠统须家河组气藏是近期天然气储量大幅度增加的重点;③古隆起外围雷口坡组是近期找气的重点层系;④下古生界及震旦系是寻找天然气发现的新领域;⑤页岩气藏将是蜀南地区非常规油气勘探开发的新领域。
In order to find out the next exploration favorable zone in the old exploration area in the south of Sichuan Basin (hereinafter referred to as the Shunan area), the basic geological characteristics of this area are systematically analyzed and confirmed, with the following features: multi-stage tectonic cycle evolution, relatively sedimentary system, , Multi-reservoir stratigraphic and trap types, multi-stage hydrocarbon accumulation and multiple petroleum systems. Through the re-understanding of the old wells, combined with the exploration results and achievements, it is considered that the key research and exploration in the recent Shunan area are as follows: (1) Deepening Permian and Triassic exploration is the key issue of increasing reserves and yielding; ② The main Upper Triassic Xujiahe Formation gas reservoir is the focus of recent significant increase of natural gas reserves; ③ the paleo-uplift peripheral Leikoupo Formation is the focus of recent gas discovery; ④ Lower Paleozoic and Sinian are looking for New areas of natural gas discovery; ⑤Shale gas reservoirs will be a new area for unconventional oil and gas exploration and development in southern Sichuan.