石油实验地质Issue(2)：144-152,159,10.DOI:10.11781/sysydz201402144
北部湾盆地东南部构造特征及控油作用分析
Structural features and controlling on oils in southeastern Beibu Gulf Basin
摘要
Abstract
Similar to those of the middle and small basins of continental margin facies in South China, the base-ment of the Beibu Gulf Basin has experienced 3 evolutionary stages:rift from Paleocene to Eocene, rift to depres-sion transition during Oligocene, and regional subsidence ever since Miocene. Influenced by the basin-forming events such as Shenhu, Zhuqiong, Nanhai and Dongsha, 4 periods of faults developed in the Fushan and Maichen sags in the southeast of the basin, resulting in 3 dominant fault systems of NE,NEE and NW directions, forming 2 tectonic layers. The faults are of flower, piled flower, petal and bush shapes, forming 4 styles including basal tilted strike-slip, basal stretch Domino, cap extensional detachment and cap sliding traction. The Fushan Sag showed an obvious asymmetric stretching process, forming NE-oriented tectonic transfer zone in the middle. The EW-oriented fault system of stage Ⅳ in the southeast of the basin controlled present oil reservoirs in the 2 sags. The nose-like structural zone in the center and the steep slope step zone in the southeast of the Fushan Sag are fa-vorable petroleum exploration targets in the southeast of the basin.关键词
控油作用/构造特征/盆地演化/迈陈凹陷/福山凹陷/北部湾盆地Key words
oil-controlling effect/structural feature/basin evolution/Maichen Sag/Fushan Sag/Beibu Gulf Basin分类
能源科技引用本文复制引用
徐政语,俞广,吴炜强,马庆林,黄羚,熊绍云,程刚..北部湾盆地东南部构造特征及控油作用分析[J].石油实验地质,2014,(2):144-152,159,10.基金项目
中国石油天然气股份有限公司科技项目“南方地区中小盆地油气地质条件与精细目标评价”（2011D-0707）和“南方、青藏、华北等新区海相碳酸盐岩油气地质综合评价与有利勘探区带优选研究”（2012B-0504）资助。 （）
