【摘要】 地震剖面解释及沉积相研究证实塔里木东部轮东—古城地区、罗西地区寒武纪—中奥陶世沉积期发育两个近南北向展布的台地边缘相带。轮东—古城坡折带属缓坡型台地前缘坡折带,坡折带位置自寒武纪至中奥陶世逐渐向东迁移。罗西坡折带属台地边缘陡崖型坡折带,寒武纪—中奥陶世呈多期坡折垂向叠加特征。成藏条件分析表明:轮东—古城坡折带具有良好的寒武系古油藏及奥陶系原油裂解气的勘探前景,而罗西坡折带保存条件好的地区有望获得寒武系古油藏的勘探突破。更多还原

【Abstract】 Based on a study of seismic sections and sedimentary facies,two Cambrian-Middle Ordovician break-slope zones were approved in Lundong—Gucheng and Luoxi areas of the eastern Tarim.The Lundong—Gucheng break-slope zone belonged to slow break-slope along the platform margin,and the shape on seismic sections showed that the Lundong—Gucheng break-slope moved eastward gradually from Cambrian to Middle-Ordovician.The Luoxi break-slope zone belonged to scarp break-slope along the platform margin,and the break-slope was aggraded vertically from Cambrian to Middle Ordovician.The study on the petroleum accumulation conditions indicated that the Lundong—Gucheng break-slope zone might have a considerable exploration potential of Cambrian palaeo-oil pools and Ordovician oil cracked gas,and exploration breakthrough of Cambrian palaeo-oil pools would be made in better conservation areas of the Luoxi break-slope.更多还原