周口拗陷油气地质特征  

Characteristics of petroleum geology of Zhoukou Depression

作　　者：姚亚明[1] 赵红格[1] 杨斌谊[1] 付代国[2] 赵增录[2] 

机构地区：[1]西北大学地质学系,陕西西安710069 [2]河南石油勘探局勘探事业部,河南南阳473132

出　　处：《西北大学学报（自然科学版）》2004年第3期331-336,共6页Journal of Northwest University（Natural Science Edition）

基　　金：中国石油化工集团公司重点科技攻关资助项目(P02039)

摘　　要：目的　周口拗陷是由多个次级凹陷、多套烃源岩层、多套目的层系组成的一个复式拗陷,认识其地质特征对油气勘探意义重大。方法　运用地震资料解释、地震地质综合研究、层序地层、圈闭评价等方法,对生、储、盖、圈、运、保等基本石油地质条件进行了分析。结果　认为该区油气资源丰富,有4个主要圈闭形成期和油气运移期,形成3种油气聚集类型;综合评价指出谭庄 沈丘凹陷、倪丘集凹陷为I类勘探有利区,舞阳、襄城、鹿邑凹陷为Ⅱ类勘探有利区。结论　周口凹陷的油气勘探,应围绕该有利地区进行深入研究。AimZhoukou Depression is a composite depression which includes many sags, many source rocks, many formation of interest. It is of great significance for petroleum exploration to understand the geologic characteristics.MethodsThe research analyzes the basic petroleum geologic conditions of the source rock, reservoir, entrapment, trap, migration and preservation by means of seismic interpretation, comprehension research of seismic and geology, sequence stratigraphy and trap evaluation.ResultsThe oil and gas resource is rich in Zhoukou Depression and there existed four main formation and migration periods and three petroleum accumulation types. The integrated assessment shows that Tanzhuang-Shenqiu Sag and Niqiuji Sag are the type Ⅰ better regions for exploration and Wuyang Sag, Xiangyang Sag,Luyi sag are the type Ⅱ regions.ConclusionThe petroleum exploration in Zhoukou Depression should be stressed on those favorable area and make further research.

关 键 词：周口拗陷 石油地质特征 油气成藏条件 有利地区评价 

分 类 号：TE113[石油与天然气工程—油气勘探]