摘要
英东地区构造复杂,逆断层发育,破裂作用相对较强。受构造抬升的影响,岩石失去可塑性,从而产生粒内的微裂缝或构造缝。该粒内微裂缝对储层孔隙度贡献量较小而对渗透率贡献较大,体现为储层的孔隙度、渗透率相关性较差,储层分类比较困难。FZI值是一个把岩石结构和矿物地质特征、孔喉特征等结合起来的一个综合判定参数,文章引用这一参数,结合压汞实验中测试样品的毛管压力曲线特征,将研究区储层分为三类。通过对岩心分析数据、压汞实验和薄片鉴定等资料的综合分析,对比各类储层的微观特征;结合试油试采测试资料,建立相应的适合地区地质特征和油藏特点的测井储层综合分类评价标准。
The structure of Yingdong area is complex with reverse fault development and relatively strong fracture effect. Rock loses plasticity affected by the tectonic uplift, resulting in intragranular microcracks or tectoclase, which contributes very small to porosity but great to permeability, represents a poor correlation between porosity and permeability. It is hard to classify reservoirs. FZI value is a comprehensive judgment parameter which combines rock texture, mineral geologic characteristic and pore throat characteristicstogether. With this parameter and the characteristics of capillary pressure curves from the mercury injection experiments, reservoirs of the study area are divided into three categories in the paper. Through a comprehensive analysis of core analysis data, mercury experiments and thin section analysis information, the logging evaluation criteria of the reservoir are established with contrasting microscopic features of various types of reservoirs; combining well testing report data to comprehensive classification which is appropriate to the regional geological features.
出处
《国外测井技术》
2014年第6期34-36,3-4,共3页
World Well Logging Technology
关键词
储层分类
FZI值
毛管压力曲线
孔隙结构
英东地区
reservoir classification
FZI value
capillary pressure curves
pore structure
Yingdong area
