西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (5): 73-78.DOI: 10.3863/j.issn.1674-5086.2009.05.015

• 地质勘探 • 上一篇    下一篇

濮城油田南区沙二上4~7低渗储层特征

肖淑明1,2 钟建华1,3 王勇4 马锋5   

  1. 1.中国科学院广州地球化学研究所,广东广州510640;2.中国石化胜利油田有限责任公司现河采油厂,山东东营257342;3.中国石油大学(华东)地球资源与信息学院,山东东营257061;4.中国石化胜利油田有限公司地质科学研究院,山东东营257015;5.中国石油勘探开发研究院,北京海淀100083
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-10-20 发布日期:2009-10-20

THE CHARACTERISTICS OF LOW-PERMEABILITY RESERVIOR OF Es2 UPPER 4-7 BODY GROUP IN THE SOUTHERN AREA OF PUCHENG OILFIELD

XIAO Shu-ming1,2 ZHONG Jian-hua1,3 WANG Yong4 MA Feng5   

  1. 1.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou Guangdong 510640,China;2.Xianhe Production Plant,Shengli Oilfield Company Ltd.,SINOPEC,Dongying Shandong 257342,China;3.College of Geo-resources and Information,China University of Petroleum,Dongying Shandong 257061,China;4.Geological Scientific Research Institute,Shengli Oilfield Company Ltd.,Dongying Shandong 257015,China;5.Research Institute of Petroleum Exploration and Development,CNPC,Haidian Beijing 100083,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-10-20 Published:2009-10-20

摘要: 根据铸体薄片、扫描电镜、物性、岩芯、测井和地质模型等资料,对濮城南区沙二上4~7储层进行详细研究,认为该套储层储集空间以剩余原生粒间孔和次生粒间孔组合为主;排驱压力和饱和度中值压力较高,孔喉半径小且分选性较差,歪度小,溶蚀作用对改善喉道连通性的效果不佳,渗透率较低。储层质量受沉积作用和成岩作用的综合影响,其中,沉积作用是形成低渗透储层的最基本因素,决定了后期成岩作用的类型和强度,强烈的压实作用和胶结作用对形成低孔低渗储层起了决定性作用。利用储层物性和孔隙结构参数,将其储层划分为4类,其中Ⅰ、Ⅱ类储层主要分布在三角洲前缘水下分流河道和河口坝微相。

关键词: 地质模型, 储层, 沉积相, 粒间孔, 成岩作用

Abstract:

The characteristics of Es2 upper 4-7 body group reservior in the southern area of Pucheng Oilfield are investigated with the data of thin section analysis,SEM,porosity and permeability analysis,core,log and geologic model.It is recognized that the pore space of reservoir mainly includes the primary residual intergranular pores and secondary intergranular pores.Displacement and saturation median point pressure is high,pore throat radius is small,pores throat sorting is poor and skewness is fine.The quality of reservoir is affected by sedimentary microfacies and diagenesis.The sedimentation is a basic factor generating low-permeability reservoirs,and the strong compaction and cementation are the key factors forming low-porosity and low-permeability reservoirs.According to the petrophysical properties of reservoir and pore structure parameters,Es2 upper 4-7 body group reservoir is classified into four types,the type Ⅰ and type Ⅱ are mainly distributed in the underwater channel and estuarine far-bar sandstone.

Key words: geologic model, reservoir, sedimentary microfacies, intergranular pore, diagenesis

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