川东石炭系气藏类型及富集特征研究  

Type and enrichment characteristics of Carboniferous gas reservoir in east Sichuan Basin

作　　者：董才源[1] 杨威[1] 武赛军[2] 

机构地区：[1]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [2]中国石油勘探开发研究院,北京100083

出　　处：《断块油气田》2014年第5期564-568,共5页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项课题"大中型天然气田富集规律及勘探技术研究"(2008ZX05007-02)

摘　　要：川东石炭系是四川盆地重要的勘探层系之一。基于气藏发育构造部位、圈闭类型及主要特征的不同,将川东石炭系已有气藏分为主体构造断垒型、潜伏高带断垒型和潜伏高带断鼻型等3类,预测了向斜悬挂式、向斜低缓微隆型和向斜地层岩性型等3种新的气藏类型,并总结了川东石炭系气藏分布模式。在分析6种气藏富集特征后,认为川东石炭系气藏富集优越性依次应为潜伏高带断鼻型、潜伏高带断垒型、向斜悬挂式、主体构造断垒型、向斜低缓微隆型、向斜地层岩性型。其中,潜伏高带断鼻型富集优越性最好,是川东石炭系大型气藏勘探的重要目标;向斜悬挂式气藏富集优越性较好,可能是川东石炭系下一步勘探的最为有利气藏类型;向斜低缓微隆型和向斜地层岩性型也是川东石炭系勘探的潜力类型。Carboniferous of east Sichuan Basin is one of the most important exploration layers. Based on structural position, trap type and main characteristics, existing gas reservoirs are divided into three types which are main structure-fauh horst type, latent high zone-fauh horst type and latent high zone-fauh nose type. And three new types are thought to be existed named syncline-hanging type, syncline-low amplitude micro uplift type and syncline stratigraphic-lithological type. Em4chment characteristics difference of all 6 type gas reservoirs are analyzed and it is concluded that enrichment superiority order is latent high zone-fauh nose type, latent high zone-fauh horst type, syncline-hanging type, main structure-fauh horst type, syncline-low amplitude micro uplift type and syncline stratigraphic-lithological type. Latent high zone-fault nose type is the best type which is the filet target to prospect giant gas fields. Syncline-hanging type has a good sequence which maybe the important target for the next exploration. Syncline-low amplitude micro uplift type and syncline stratigraphic-lithological type are the potential types for the future exploration.

关 键 词：气藏类型 富集特征 勘探领域 石炭系 川东 

分 类 号：TE122[石油与天然气工程—油气勘探]