Abstract: At the beginning of burial, organic matter in natural world would have been in extremely complicated geophysical and geochemical fields where there existed two kinds of environmental energies: thermal energy and mechanical energy. The latter could be transferred into petroleum system by its mechanical stresses,and endued with a certain of mechanical energy in form of mechanical wave. Once a faulted fold structural movement took place,the mechanical stress had obvious effect on hydrocarbon migration, which might be converted or transformed into degradation of the energy and drive of ground stress, such a series of chain reactions would result in successive high efficient events in hydrocarbon generation,migration and accumulation. This study proposed a hypothesis that it is tectonic movement that creates events of hydrocarbon generation and drainage and accomplishes a petroleum system in light of saltatory evolution and by idea of transforming controlled formations.

Key words: seismic structure, seismic wave field, effective contact pressure, ultramicrograin, mechanic geochemical action, surface chemistry, organic matter evolution, hydrocarbon migration, reservoir formation stage