Xiong Liping, Wu Changwu, Guo Yongqiang, Li Songyang. Petroleum accumulation characteristics in Campos and Santos Basins, offshore Brazil[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2013, 35(4): 419-425. doi: 10.11781/sysydz201304419
Citation: Xiong Liping, Wu Changwu, Guo Yongqiang, Li Songyang. Petroleum accumulation characteristics in Campos and Santos Basins, offshore Brazil[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2013, 35(4): 419-425. doi: 10.11781/sysydz201304419

Petroleum accumulation characteristics in Campos and Santos Basins, offshore Brazil

doi: 10.11781/sysydz201304419
  • Received Date: 2012-08-27
  • Rev Recd Date: 2013-07-04
  • Publish Date: 2013-07-28
  • 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.

     

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