南堡凹陷水淹层地化识别与评价技术研究

Water flooded layer identification and evaluation technology research of Nanpu sag

在钻井取心水驱油地球化学实验分析的基础上,明确了油层水淹后岩石地球化学性质及参数变化特征,通过两类储层不同水淹程度的含油饱和度、饱和烃气相色谱总峰面积等评价参数建模,建立水淹层地化识别方法和评价标准,形成一套定性识别和定量计算有机结合的水淹层地化录井综合识别方法。利用该方法对南堡凹陷深层注水开发区块进行了水淹层评价,结果表明,南堡凹陷7口井水淹层的水淹程度与实际试油结论吻合,说明该方法适用性强,为油田深层注水开发区块水淹程度识别与评价提供了有力的技术支持。

Based on experimental analysis of geochemical drilling coring in water flooded reservoirs,the geochemical properties and the reservoir parameters flooded characteristics have been made clear.Through parameters modeling of oil saturation,saturated hydrocarbon gas chromatography total peak area under two reservoir types of different water-flooded degree,the layer identification methods and evaluation criteria have been established,and a set of qualitative and quantitative calculation of the organic combination has been formed.Using this method,flooded layer evaluation of Nanpu Sag has been carried out.The results show that the water flooded degree of 7 wells in Nanpu sag coincide with the actual test oil wells flooded.The method is proved to be of strong adaptability and can provide a strong technical support for water flooded degree identification and evaluation in deep water injection development.