渤中25-1南油田明下段储层宏观非均质性研究

为了提高油田的开发效果,通过对研究区明下段浅水三角洲沉积体系内微相类型、层内韵律特征、隔层分布特征、砂体的几何形态、钻遇率、孔渗特征等研究,定量或半定量表征了该区储层的宏观非均质性,揭示了研究区主力含油层段受沉积微相所控制,具有较强的层内、层间及平面非均质性。根据研究成果,提出了针对油田切实可行的综合治理建议。

Study on the macroscopic heterogeneity of the reservoir in Bozhong 25-1S Oilfield

To improve the exploitation effect,microfacies type,rhythm characteristic of intrastratal resevior,distribution characteristics of interlayers,geometric shape of sandbody,drilling ratio,porosity,and the permeability of shallow water delta depositional system in the lower part of Minhuazhen Formation were analyzed,quantitative analysis and half-quantitative analysis were made to illustrate the macroscopic heterogeneity of the reservoir.The controls of sedimentary microfacies on the main oil section in the research area and the strong intrastratal,interstratal and plane heterogeneities are revealed.Finally,based on the study results,some reasonable advices were given.