泌阳断陷下第三系陆相层序中油气生储盖及其组合特征——以双河—赵凹地区下第三系核三上段为例  

Oil Source Bed, Reservoir and Cap Rock in Palaeogene Terrigenous Sequence of Biyang Fault Depression and Characteristics of the Source-Reservoir-Seal Assemblage——Taking the Upper Member of Eh_3 in Shuanghe-Zhaoao Area as an Example

作　　者：郭文平[1] 胡受权[1] 

机构地区：[1]中山大学地球科学系,广东广州510275

出　　处：《西安石油学院学报（自然科学版）》2002年第2期5-9,共5页Journal of Xi'an Petroleum Institute（Natural Science Edition)

摘　　要：运用层序地层学理论和分析方法 ,分析了泌阳断陷下第三系陆相层序中油气生、储、盖以及盐组合特征 .分析结果表明 :第三系陆相层序中极为有利的烃源岩为发育于高水位体系域的半深湖 -深湖泥岩 (属区域性生油层 ) ,其次是水进体系域及水退体系域的湖相泥岩 (属局部性生油层 ) ;有利的储集体分布于水进体系域和水退体系域的冲积扇——扇三角洲砂体及前扇三角洲斜坡带的滑塌性重力流扇体中 ,尤其是扇三角洲的 (水下 )分流河道、河口砂坝 (远砂坝 )及前缘席状砂体 .区域性盖层为高水位体系域的深水湖相泥岩 。In Biyang fault depression, the most favorable hydrocarbon source rocks are developed in the semideep or deep lake facies mudstone mainly in HST (belonging to regional oil source bed), and secondly in the lake facies mudstone in TST and RST (belonging to local oil source bed); favorable reservoir bodies are distributed in fluvial fan—fan delta sandstone body, and in slumping gravity flow fan body lied in slope zone of the delta, especially in (subaqueous ) distributary channel, debouch bar (far bar) and frontal sheet sandstone of fan delta in TST and RST. Regional cap rock is the deep lake facies mudstone in HST, but the lake facies mudstone in TST and RST can also form local cap rock.

关 键 词：生储盖组合 相分析 体系域 陆相层序 泌阳断陷 组合特征 石油地位 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]