摘要
储层分类评价对于油田开发具有重要意义,而核磁共振技术在储层评价中的应用越来越广泛。利用核磁共振、扫描电镜、重矿物、薄片等实验数据,采用记点统计、离心截止值筛选、T2弛豫时间分析等方法对王龙庄油田的储层特征进行研究,认为储层的岩石类型以长石砂岩和岩屑长石砂岩为主,原生粒间孔隙是王龙庄油田主要储集空间。油田内部各小断块储层类型差异体现了孔隙结构强非均质性的特点。结合沉积微相、物性以及核磁共振等微观实验,将储层分为3类,其中阜二段三亚段滩坝砂体对应A类孔隙结构,属物性较好的A类储层,该类储层是王龙庄油田的优质储层,该认识对指导王龙庄油田的调整开发具有现实意义。
Nuclear magnetic resonance(NMR)technology is finding wider and wider application in reservoir classification evaluation,which is of great significance for oilfield development.Based on experimental data of NMR,scanning electron microscopy,heavy mineral,and thin section,this paper studied the reservoir characteristics of Wanglongzhuang oilfield by using methods of point statistics,offcenter cutoff value screening and T2 relaxation time analysis.It has been found that with Feldspar sandstone and lithic feldspar sandstone as the main rock types,intergranular pore serves as the main reservoir space in Wanglongzhuang oilfield.The reservoir type differences of small fault block indicate the pore structure and strong heterogeneity in the oilfield.Combined with microscopic experiments of sedimentary microfacies,physical properties and nuclear magnetic resonance,the reservoir can be divided into three categories.Among them,the F32 formation beach bar sand body,corresponding to the better pore structure of class A,belongs to class A reservoir with better physical property.This type of reservoir is the high quality reservoir of Wanglongzhuang oilfield.The result has practical significance to the development adjustment of Wanglongzhuang oilfield.
出处
《山东科技大学学报(自然科学版)》
CAS
2016年第2期8-15,共8页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
阜宁组储层
孔隙结构
核磁共振
分类评价
Funing formation
pore structure
NMR
classification evaluation