The Polystage Evolution of the Subsidence Downwarping Region and Formation of Petroleum Accumulation
- Received Date: 1995-01-28
- Publish Date: 1996-12-31
Abstract: The subsidence downwarping region in petroleum bearing basins was found to be characteristic of polystage and polycycle development. The characteristics of tectonic movement controlled the formation and devolopment of sediment subsidence and petroleum bearing depression center, and also influenced the sedimentary rock sequence and formation of hydrocarbon source rocks. The process of successive subsidence or interruptly polystage subsidence existed during the formation of petroleum bearing downwarping region as a result of the vertical superposition of prototype basins in the geologic time. This process controlted the polystage successivety hydrocarbon-generating process in the thermal evolution of sonroe rocks, in the condition of continuously being buried.Multiphase tectonic movements formed faults shatter belts regional, unconformity and fissure system of structural culmination, which together with good primary porosity-Permeability and secondary porosity-permeability system in the process of diagenesis supplied different phases and types of oil and gas under the condition of migration and entrapment.
Citation: | Zheng Jianjing, Peng Zuolin. The Polystage Evolution of the Subsidence Downwarping Region and Formation of Petroleum Accumulation[J]. Acta Sedimentologica Sinica, 1996, 14(S1): 158-163. |