乌尔逊凹陷南部白垩系大磨拐河组层序地层特征与油气勘探远景  

Sequence Stratigraphic Characteristics and Hydrocarbon Prospect of the Cretaceous Damoguaihe Formation in the Southern Wuerxun Sag

作　　者：刘淑芬[1] 张明学[1] 文瑞霞[2] 刘伟伟[1] 张新[1] 

机构地区：[1]大庆石油学院地球科学学院,大庆163318 [2]大庆油田有限责任公司勘探开发研究院,大庆163712

出　　处：《科学技术与工程》2010年第9期2151-2154,共4页Science Technology and Engineering

摘　　要：通过综合分析地震、测井和钻井等资料,对乌尔逊凹陷南部地区大磨拐河组进行了层序分析,识别出二级层序界面,首次湖泛面,最大湖泛面,分析了层序内三个体系域——低水位体系域、水进体系域和高水位体系域特征。在层序地层单元划分和对比的基础上,结合不同体系域的沉积体系分析,建立了该区的层序地层学模式,研究了油气分布特点,在有利的构造配合下,指出了工区发育的四种油气藏类型。On the basis of analysis of the data of seismic,well-log and drilling core data,this paper analyzed the sequence stratigraphy of the Damoguaihe Formation in the south of Wuerxun Sag area. Second-order sequence boundaries,first flooding surfaces and maximum flooding surfaces are identified. We studied the set of type sequence,which includes lowstand system tracts,transgressive system tracts and highstand system tracts. On the basis of the identification and correlation of stratigraphic unit,the sequence stratigra-phy mode combining is built with the depositional system of three system tracts,and the distribution of oil and gas is studied. At last,four types of hydrocarbon reservoir are pointed out in suitable condition.

关 键 词：层序 乌尔逊凹陷南部 大磨拐河组 油气藏 

分 类 号：P539.2[天文地球—古生物学与地层学]