辽河油田边顶水超稠油油藏特征及其成因探讨  

Characteristics and genesis of super heavy oil reservoir with top water and edge water in Liaohe Oilfield

作　　者：才业[1] 樊佐春[1] 

机构地区：[1]中国石油辽河油田分公司勘探开发研究院

出　　处：《岩性油气藏》2011年第4期129-132,共4页Lithologic Reservoirs

摘　　要：辽河油田边顶水超稠油油藏具有构造平缓、岩石颗粒粗、物性好、成岩作用弱、非均质性较弱、油水关系复杂的特征。通过对该类油藏的成因探讨,认为生物降解作用是形成边顶水超稠油油藏的物质基础;水动力和水洗作用使浮力对原油运动力的影响变得极小;氧化作用形成的"沥青壳"阻止了地层水的下渗,有利于油藏的保存。Super heavy oil reservoir with top water and edge water in Liaohe Oilfield is characterized by gentle stru-cture,coarse rock particles,good physical properties,weak diagenesis,poor heterogeneity,no oil-water interface.The genesis of this special reservoir is discussed.The result shows that biodegradation is material basis,hydrodynamic force and water washing make the buoyancy affect crude oil movement little,and the ＂asphalt shell＂ formed by oxidation prevents the formation water infiltration,which is favorable for reservoir preservation.

关 键 词：超稠油 油藏特征 生物降解作用 边顶水油藏 辽河油田 

分 类 号：TE345[石油与天然气工程—油气田开发工程]