酒西坳陷油藏地球化学研究  

Reservoir Geochemistry in Jiuxi Depression

作　　者：胡咏[1] 张大江[2] 于兴河[1] 程克明[2] 熊英[2] 杨智明 

机构地区：[1]中国地质大学,北京100083 [2]中国石油石油勘探开发研究院,北京100083 [3]中国石油玉门油田分公司勘探开发研究院,甘肃玉门753200

出　　处：《新疆石油地质》2005年第1期39-43,共5页Xinjiang Petroleum Geology

摘　　要：运用油藏地球化学的理论和研究方法,对酒西坳陷进行了原油族群划分、烃源岩生烃史及石油运移方向研究。酒西坳陷6个油田的原油均属于同一石油族群,又可分为成熟、高成熟和低成熟3个石油组群;酒西坳陷3个生油次凹——青南次凹、石北次凹和大红圈次凹源岩的生烃门限深度分别为4150m、3000m和3300m;原油物性参数变化规律及含氮化合物咔唑类参数变化表明,酒西坳陷石油运移主要方向是由西向东,即青西油田—鸭儿峡油田—老君庙油田—石油沟油田,石油沟和老君庙油田原油垂向运移为自下而上,即L层—K层。Reservoir geochemistry theory and methods are applied to classification of oil family, study of source rock's hydrocarbon-generating history and analysis of petroleum migration direction in Jiuxi depression. Study shows that the crude oils from six fields in this depression belong to the same oil family which could further be divided into three groups of mature, high mature and low mature oils; the oil threshold depths of source rocks in its three sub-sags (Qingnan, Shibei and Dahongquan) range from 4 150 m, 3 000 m and 3 300 m, respectively. The crude physical parameters and carbazole parameters in nitrogenous compounds indicate that the direction of Jiuxi petroleum migration should be from west toward east, i.e., Qingxi field→ Yaerxia field→Laojunmiao field→Shiyougou field, while Shiyouhou and Laojunmiao fields also have vertical petroleum migration with directions from bottom to top, i.e., from L layer to K layer.

关 键 词：酒西坳陷 油藏地球化学 青西油田 原油物性 生烃史 石油运移 生油 烃源岩 含氮化合物 参数变化 

分 类 号：TE122[石油与天然气工程—油气勘探] P618[天文地球—矿床学]