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从斜坡带沉积古地貌特征入手,以高分辨率地震数据体为基础,通过构造特征及砂体展布规律研究,提出本地区以早断、中凹、晚隆的背景形式,控制了沙三段砂体发育。板桥次凹东部受小站物源沉积体系控制,发育大型扇三角洲沉积,板桥斜坡区位于扇三角洲沉积体系前缘,受斜坡古背景控制沙二、三段多期砂体叠置;沙三段烃源岩有机质丰度高、演化程度高,砂体与烃源岩直接接触,油气直接注入,烃源岩、砂体及断裂组合构成统一的疏导体系,使板桥斜坡构造背景好,砂体发育好,储集物性好,储盖组合优越,具备形成大型气藏的条件。
Based on the features of sedimentary paleogeomorphology in the slope belt and high-resolution seismic data body, through the study of tectonic features and sand body distribution law, it is proposed that the background pattern of the area should be early broken, Segment sand body development. The east of Banqiao Sag is controlled by source material depositional system of small station and develops large-scale fan delta deposition. The slope of Banqiao is located in the foreland of the depositional system of fan delta, controlled by the paleo-background of sand slope. The three source rocks have high abundance of organic matter, high evolution degree, direct contact between sand body and source rock, direct injection of oil and gas, formation of uniform drainage system by source rock, sand body and fracture combination, Good sand body, good reservoir properties, excellent combination of reservoir and cover, with the conditions for the formation of large gas reservoirs.