柳赞油田稠油油藏特征与形成机理研究  

Characteristics and Forming Mechanism of Heavy-oil Reservoirs in Liuzan Oilfield

作　　者：方度 贾倩 刘道杰 魏文懂 龚晶晶 

机构地区：[1]中石油冀东油田分公司勘探开发研究院,河北唐山063000

出　　处：《石油天然气学报》2014年第6期26-31,3-4,共6页Journal of Oil and Gas Technology

基　　金：高等学校博士学科点专项科研基金项目(20095121110003)

摘　　要：南堡凹陷柳赞油田稠油油藏在馆陶组、沙河街组均有分布,属复杂小断块型普通稠油油藏。通过研究原油分析化验资料发现,柳赞油田稠油油藏分布具有明显的区域性和成层性。在详细分析原油地球化学特征的基础上,结合构造演化与油气成藏规律,揭示了区内浅层稠油油藏的形成主要受生物降解与水洗氧化作用影响,深层稠油油藏的形成主要与断层活动有关。Heavy oil reservoirs in Liuzan Oilfield of Nanpu Depression was distributed both in Guantao Formation and Shahejie Formation,it belonged to a normal heavy oil reservoir with small fault blocks.The assay data of crude oil were analyzed,it was found out that the distribution of crude oil in Liuzan Oilfield had obvious regionalization and stratification of heavy oil reservoir.On the basis of comprehensive analysis of geochemistry characteristics of crude oil and in combination with the research of tectonic evolution and hydrocarbon accumulation rules,it reveals that the formation of shallow heavy-oil reservoirs is mainly influenced by biodegradation and water washing and oxidation in the studied area,while the formation of deep heavy oil reservoirs is mainly related with fault action.

关 键 词：稠油油藏 油藏特征 断层活动 生物降解 水洗氧化 柳赞油田 

分 类 号：P618.13[天文地球—矿床学]