泌阳凹陷新生代构造控油规律研究  

Structural Control on Distribution of Cenozoic Reservoirs in Biyang Depression

作　　者：翟中喜[1,2] 陆建林[3] 胡望水[4] 夏东领 

机构地区：[1]中国地质大学(武汉)资源学院,湖北武汉430074 [2]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [3]中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所,江苏无锡214151 [4]长江大学地球科学学院,湖北荆州434023

出　　处：《石油天然气学报》2010年第3期43-46,58,共5页Journal of Oil and Gas Technology

摘　　要：泌阳凹陷的油气藏在时空分布上明显受到新生代构造的控制。主控断层对烃源岩的控制作用明显,铲式断层上盘的半地堑有比较稳定的沉降中心,控制烃源岩演化与生烃洼陷分布,为周边构造带提供了丰富的油源。大量实例证明,泌阳凹陷主要砂体大多发育分布在变换构造控制区内,尤其是核三段的8个砂组,特征更加明显,其主力砂体均分布在变换构造发育区,变换构造控制了储层的分布;该凹陷的构造演化经历的4个阶段,分别对油气运移起到了不同的控制作用,从而形成了泌阳凹陷阶梯状和单向垂向运移2种油气运移方式;伸展构造控制了圈闭的形成,为油气聚集创造了有利条件;构造作用使各成藏要素紧密联系,易于形成有利成藏组合,最终形成有利的油气富集区。Distribution of reservoirs in Biyang Depression was obviously controlled by the Cenozoic structures.The source rocks were significantly controlled by the major faults.There existed a relatively stable subsidence center in the half-graben of the hanging wall of listric fault.It controlled the evolution of source rocks and the distribution of hydrocarbon kitchens,by which abundant oil resources were provided to the structural zones in the peripheral area.The application shows that majority of sandbodies in Biyang Depression are distributed in areas controlled by transform structures,especially the eight sand units in the third member of Hetaoyuan Formation,where the transform structures are all controlled by the major sandbodies.The reservoir distribution is controlled by the transform structures.The structural evolution in the depression can be divided into 4 stages which control the hydrocarbon migration to some extent.There are two modes of hydrocarbon migration in the study area,including step-like and one-way vertical migrations.Extensional structures control the formation of traps,provides favorable conditions for hydrocarbon migration and accumulation.The structural activities closely connect with various reservoir-forming elements,result in favorable oil enrichment area.

关 键 词：变换构造 构造作用 控油规律 新生代 泌阳凹陷 

分 类 号：P618.13[天文地球—矿床学]