长岭断陷东岭地区火石岭组油气成藏特征分析  

Huoshiling Hydrocarbon Accumulation in Dongling Area of Changling Depression

作　　者：肖永军[1,2,3] 徐佑德[3] 段晓艳[4] 于永利[3] 

机构地区：[1]北京大学地球与空间科学学院,北京100871 [2]北京大学石油与天然气研究中心,北京100871 [3]胜利油田分公司西部新区研究中心,山东东营257000 [4]中国石化中原油田分公司物探研究院,河南濮阳457001

出　　处：《天然气地球科学》2012年第4期720-726,共7页Natural Gas Geoscience

基　　金：中国石化科技攻关项目"长岭断陷火山岩气藏成藏主控因素及区带优选"(编号:P10024)资助

摘　　要：长岭断陷东岭地区火石岭组具有典型的断陷残留盆地特征。近年来在东岭地区火一段残留洼陷的碎屑岩中获得较大的突破。通过对东岭地区火石岭组成藏条件的分析,探讨了该区火石岭组油气成藏特征及富集规律。火石岭组发育深湖相—半深湖相暗色泥岩,厚度大、分布广,处于成熟—高成熟的大量生油气阶段;火石岭组发育火一段前缘相砂体和火二段火山岩2种类型储层,在与火一段烃源的有效配置和上覆火二段火山岩的封盖作用下,形成了自生自储式的火一段岩性、地层油气藏及下生上储式的火二段火山岩构造—岩性气藏。油气藏的分布受火一段烃源的控制,输导条件的差异性造成了西气东油的油气分布特征,而圈闭条件则控制油气藏的类型及富集程度。Huoshiling Formation of Dongling area in Changling depression is a typical residual basin. In recent years,a great breakthrough has been made in the Huoshiling elastic exploration of the Dongling area. In this paper, we make clear the feature of petroleum accumulation and enriching pattern after analyzing accumulation condition of Huoshiling Formation in the Dongling area. In Huoshiling Formation, the dark mudstone with big thickness and wide distribution,which was formed in the semi-deep and deep lake facies exists,is at mature-high mature stage of thermal maturity. There are two types of reservoirs in Huoshiling Formation,one is the delta front sand bodies of K1h1 ,the other is the volcanic reservoir of K1h2. The K1h1 reservoir is a lithologic and stratigraphic reservoir of self-generation and self-accumulation while the K1h2 reservoir is a structural-lithologic one of lower-generation and upper-accumulation. The distribution of hy drocarbon reservoirs is controlled by K1h1 source rocks. The difference of fluid transporting conditions leads to distribution of gas in western part and oil in eastern one. Trap conditions confine the reservoir type and hydrocarbon enrichment.

关 键 词：成藏模式 成藏条件 火石岭组 东岭地区 长岭断陷 

分 类 号：TE121.1[石油与天然气工程—油气勘探]