ML油田BS区注水开发储层物性变化特征

Characteristics of changes in physical properties of waterflooding reservoirs in BS area of ML Oilfield

长庆ML油田Bs区目前已经进入中高含水期开采阶段。在长期开发过程中，由于地层压力变化，注入水的冲刷作用、注入水的水质等影响了储层的物性。针对储层物性的变化。对比开发初期主力油层的岩心与目前的岩心分析资料，阐述了储层物性变化特征及这些特征的影响因素。分析研究成果对调整油藏开发策略有很好的借鉴意义。

The BS area in Changqing ML Oilfield has entered the high water cut stage. In the long-term development process, the erosion and water quality of the injected water impact the reservoir＇ s physical properties due to formation pressure changes. According to the changes of reservoir properties, the characteristics of the physical properties variation and the influencing factors of these characteristics are expounded by comparing the analysis data of the cores from the main reservoirs at the early stage of development with that at the present days. The results of the study are helpful to the adjustment of the oil reservoir development strategy.