Petroleum Accumulation Characteristics in Campos and Santos Basins, Offshore Brazil
详细信息
- 责任者：Xiong Liping (Petroleum Exploration and Production Research Institute ; SINOPEC ; Beijing 100083 ; China) ; Wu Changwu
- 刊名：Petroleum Geology & Experiment
- 出版年：2013
- 卷期：35(4)
- 关键词：油气藏形成 ; reservoir formation ; 成藏模式 ; pool-formed model ; 巴西 ; Brazil
- 页码：p.419-425
- 图表：illus., 1 table, 10 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
The Campos and Santos Basins are rich in petroleum.Both of the 2 basins have experienced 3 phases of tectonic evolution(rift,transition and passive continental margin),depositing 3 corresponding sedimentary mega-sequences(pre-salt continental sequence,salt sequence and post-salt marine sequence),and forming 2 plays(pre-salt play and post-salt play).Due to different tectonic frameworks,salt distribution and pre-salt reservoir development patterns are different in the 2 basins.Combining with different post-salt reservoir distribution,obvious difference exists in petroleum distribution between the 2 basins.Petroleum in the Santos Basin mainly distributes in pre-salt sequences of the outer basement plateau while petroleum in the Campos Basin accumulates in post-salt reservoirs of the central low uplift.Based on the analyses of tectonic evolution,sedimentation characteristics and major controlling factors,the favorable exploration zones for pre-and post-salt reservoirs are defined.The differences of accumulation condition between the 2 basins are discussed.The studies may provide Chinese companies a guide for new business development and executing blocks’exploration activities in the 2 basins.