莺歌海盆地东方区高温高压储层物性特征评价研究

Evaluation of physical characteristics of high temperature and high pressure reservoirs in the eastern area of Yinggehai Basin

通过采用薄片鉴定、扫描电镜分析及图像分析等技术系统地认识高温高压条件下岩石学特征、成岩作用及低渗储层成因机制。结果表明:黄流组一段储层物性受控于沉积微相,临滨砂坝物性最好,平均为17.1%,泥质含量较低;临滨滩砂物性次之,分布相对集中,平均值为12.6%,滨外砂坝最差,平均值为13.1%。该项研究成果对高温高压储层物性研究具有重要指导意义。

In this paper,thin section identification,scanning electron microscopy and image analysis are used to systematically understand the petrology characteristics,diagenesis and genetic mechanism of low permeability reservoir under high temperature and pressure.The results show that the reservoir physical property of the first member of Huangliu Formation is controlled by sedimentary microfacies,and the physical property of the coastal sand bar is the best,with an average value of 17.1%,and the shaliness content is low.The physical property of coastal beach sand is the second,the distribution is relatively concentrated,the average value is 12.6%,and the offshore sand bar is the worst,the average value is 13.1%.The research results have important guiding significance for the study of physical properties of high temperature and high pressure reservoirs.