新疆库米什盆地构造特征及勘探前景  

Structural Feature in Kumux Basin and Its Exploration Prospecting

作　　者：胡剑风[1] 刘玉魁[2] 郑多明[2] 刘虎[2] 

机构地区：[1]石油大学,北京102200 [2]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000

出　　处：《新疆石油地质》2004年第1期26-28,共3页Xinjiang Petroleum Geology

摘　　要：库米什盆地位于南天山东段。该区断裂发育,多具左旋性质,分析了可能的断层组合关系。盆地构造演化可以划分为4个阶段。分析认为中生代盆地具“伸展断陷盆地”特征,而新生代盆地演化为“挤压走滑型山间盆地”。库米什盆地具有良好的勘探前景:发育两套主要烃源岩、具良好的储盖组合和多种圈闭类型。对勘探前景分析后认为,近期勘探方向应以“沉积厚、埋藏深、靠盆中”的硝尔-杨布拉克坳陷为主,该坳陷内基底最深的杨布拉克凹陷为最有利远景区。Kumux basin is located in eastern sec to r of South Tianshan Mountains,characterized by developed faulting with sinistra l property.The fault assemblage relations are analyzed.There are four stages in structural evolution of this basin.It was an extensional and faulted basin i n Mesozoic,and then developed into an intermountain basin with compressed strik e-slip attribute in Cenozoic.Study shows that Kumux basin is of bright explo ration prospecting for its two sets of major source rocks,good reservoir-seal assemblage and multi-trap types.It is considered from analysis that the recen t petroleum exploration should pay more attention to Xiaoer-Yang Bulak depress ion with thick sediments,deep buried source rocks and near the center of the ba sin.Yang Bulak sag located at the deepest within the depression is the most fav orable potential area for petroleum exploration.

关 键 词：地质构造 油气勘探 库米什盆地 烃源岩 圈闭 储盖组合 

分 类 号：P618.130.22[天文地球—矿床学] TE132[天文地球—地质学]