稠油水淹层识别方法研究—以井楼油田为例

RESEARCH ON THE IDENTIFICATION METHOD FOR WATER FLOODED ZONE OF HEAVY OIL-A CASE STUDY IN JINGLOU OIL FIELD

通过对稠油岩心淡水变倍数驱替实验,研究了稠油水淹层孔隙度、电阻率的变化规律,确定了水淹层电阻率先降低后增高的规律,为电法测井识别水淹层提供了依据。研究了油田水淹条件下的测井响应特征,确立了利用AC-RT、RT-SW交汇图模板法以及利用C/0比测井解释水淹层的方法,建立了井楼油田水淹层测井解释标准,为油田后期注水开采打下了坚实的基础。

Through the experiment of freshwater displacing oil in thick oil core, the changing rule of porosity and resistivity in thick oil water flooded layer is studied that the resistivity decreases first and then increases, which provide the basis for electrical logging to identify water flooded layers.Logging response characteristics under the condition of oilfield water flooding are studied in the paper. AC-RT,RT-SW cross-plots are established. With C/O logging, the interpretation standards for the water-flooded zone in Jinglou oilfield are set up, which laid a solid foundation for later oilfield waterflood production.