摘要
利用岩心观测、铸体薄片、扫描电镜、物性分析、压汞分析等方法,对古城油田B区构造沉积特征、岩石学特征、储层特征、孔隙结构等进行了深入研究。结果表明,B区目的层段储集岩石类型主要为长石砂岩;沉积微相包括水下分流河道,河口坝,席状砂等多种微相,属扇三角洲前缘沉积;储集空间主要是原生粒间孔隙和次生溶蚀孔隙,以粗孔喉占主导。研究区孔隙度与渗透率具有较好的正相关性。影响储层性能的因素主要有沉积物成分、沉积微相、压实作用和溶蚀作用等。
The sedimentary and structure characteristics, lithology characteristics, reservoir characteristics, pore texture and pore types of the reservoir of B area of Gucheng oilfield have been studied through analyzing the core, thin sections with the method of scanning electron microscope and mercury intrusion method etc. The result indicates the sandstones mainly consist of arkoses. The multiple sedimentary microfacies includes:underwater distributaries channel,river mouth bar, sand sheet etc, belonging to the fan delta. The pore types include residual inter-particle pores, and secondary dissolution pore, most are rough pore throat. Between porosity and permeability of the investigated area, there are good positive correlations. The physical properties of the reservoirs are controlled by sedimentary microfacies, sedimentary composition, compaction, corrosion etc.
出处
《石油地质与工程》
CAS
2011年第6期9-11,5,共3页
Petroleum Geology and Engineering
基金
中国石化河南油田分公司科技项目(G0502-09-ZS0016)
关键词
泌阳凹陷
古城油田
储层特征
沉积相
成岩作用
Biyang depression
Gucheng oilfield
reservoir characteristics
sedimentary microfacies
diagenesis
