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根据储层损害的特殊性和损害机理，将储层伤害源定义为：打开储层时，在温度压力环境下，由于储层内组分或外来组分与储层组分作用所发生的变化，导致岩石孔隙结构的调整并引起绝对渗透率降低的物质。储层伤害源包括内伤害源、外伤害源和复合伤害源三个部分。内伤害源是储层内固有的，外伤害源是引入的，复合伤害源是内、外伤害源相互作用的产物。伤害源作用机理研究表明，伤害源是一个复杂的系统，具有明显的结构层次和功能，可划分为五级描述体系，这就为保护油气层技术系统工程提供了理论依据。
According to the particularity and damage mechanism of reservoir damage, the reservoir damage source is defined as the change of the reservoir component due to the action of component or foreign component and reservoir component under the condition of temperature and pressure , Resulting in the adjustment of the rock pore structure and causing a decrease in absolute permeability. The reservoir injury sources include internal injury source, external injury source and compound injury source. The internal injury source is inherent in the reservoir, the source of external injury is introduced, and the source of combined injury is the product of the interaction between internal and external injury sources. The study on the mechanism of injury source shows that the injury source is a complex system with obvious structural levels and functions and can be divided into five levels of description system, which provides a theoretical basis for the protection of oil and gas layer system engineering.