【摘要】 塔里木盆地中晚奥陶世发育大量的生物礁。通过钻探,发现了中国第一个奥陶系坡折带礁滩相灰岩亿吨级整装凝析油气田。生物礁生存和发育有着严格的生存环境,但由于构造剥蚀作用,造成塔里木盆地中晚奥陶世原始沉积环境破坏殆尽。这里从地震角度出发,应用地震地层厚度趋势法,对塔里木盆地中晚奥陶统地层进行了剥蚀恢复,再现了生物礁发育的原始沉积环境,并指出塔里木盆地中晚奥陶统在塔中以西,存在环麦盖堤斜坡～塔中～塔北的一条台地边缘相带,其范围广,面积大,为良好的生物礁发育场所,是未来油气勘探的主力区块。更多还原

【Abstract】 Organic reef was largely developed in middle to late Ordovician in Tarim Basin, and the first 100M ton reserves gas oil field in China was discovered in the organic reef-bank limestone of Ordovician slope-bank zone. Organic reef formation and development rely on very unique environment, but original sedimentary environment in middle to late Ordovician in Tarim was destroyed completely due to structure eroded. This paper presents the results of original sedimentary environment of organic reef formation and development in middle to Ordovician in Tarim Basin restored by using seismic stratigraphy thickness trend approach, and it concludes that the middle to late Ordovician distributed in the ring platform margin facies zone from Maigeti Slope to Tazhong to Tabei in western Tazhong and that the sedimentary area are large and wide with good environment for reef which will be the main exploration area of oil and gas in this area in future.更多还原