储层微观动态地质作用与剩余油研究——以胜利油区胜坨油田沙二段为例

长期注水开发油田的开发流体，长期对储集层进行浸泡、驱动，使储集层的众多微观孔隙与喉道的极其微小空间发生风化、剥蚀、溶解和沉积等微观动态地质作用。这些地质作用是由于开发流体打破了地下的动态平衡产生的，它对储集层的岩石骨架、孔隙和喉道等进行改造和破坏，进而控制剩余油的形成与分布，并使得微观剩余油存在多种分布模式。研究指出微观动态地质作用是储集层随开发而发生变化的重要原因，是控制剩余油形成和分布的基本因素。微观动态地质作用长期持续存在，并对储集层进行改造和破坏，使得储集层中的剩余油分布更复杂。

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.