Microdynamic geological processes and residual oil distribution: An (example) from the second member of the Shahejie Formation in the (Shengtuo) Oil Field of the Shengli Oil Province

The etching and triggering of the development fluids in the long-term waterflooding oil fields are (responsible) for the microdynamic geological processes such as weathering, erosion, dissolution and deposition in the micropores of reservoir rocks. These geological processes originated from the destruction of the subsurface dynamic equilibrium by the fluids for recovery often give rise to the reworking and destruction of the reservoir framework, porosity and pore throats which have exerted an important effect on the generation and distribution of residual oil.