歧北凹陷古近系构造坡折带对圈闭的控制作用  

Control of Paleogene structural slope-break on non-structural traps in the Qibei Sag,Bohai Bay Basin

作　　者：向雪梅[1,2] 王华[2] 王家豪[2] 肖敦清[3] 蒲秀刚[3] 

机构地区：[1]中国石化石油物探技术研究院 [2]中国地质大学(武汉)资源学院 [3]中国石油大港油田公司勘探开发研究院

出　　处：《石油勘探与开发》2011年第3期314-320,共7页Petroleum Exploration and Development

基　　金：国家自然科学基金项目"典型断陷富油气凹陷层序构成样式的差异性研究"(40872077)

摘　　要：应用三维地震、钻井和测井等资料,对歧北凹陷进行层序地层学研究。研究区古近系可划分为3个二级层序,11个三级层序。歧北凹陷斜坡区发育断裂坡折和挠曲坡折两种构造坡折带类型。坡折带的发育演化具有明显的阶段性和继承性:早期为断裂坡折带,晚期为挠曲坡折带。不同类型坡折带层序构成样式及内部体系域构成不同,断裂坡折带控制了低位扇三角洲砂体以及构造-岩性复合圈闭的发育,而挠曲坡折带除了对砂体有控制作用外,更突出地表现为对地层超覆以及岩性圈闭发育的控制。坡折带附近是非构造圈闭发育的有利部位,进一步勘探的潜力巨大。The study of sequence stratigraphy is carried out in central Huanghua Depression using 3D seismic data,drilling,and well logging data.The Paleogene of the studied area can be divided into three second-order sequences,and 11 third-order sequences.Two kinds of structural slope-break are developed in the Qibei slope： faulted slope-break and flexural slope-break.The development and evolution of the slope-breaks are episodic and successive： in early period,it is faulted slope-break;in later period,it is flexural slope-break.Different kinds of slope-breaks have different sequence stratigraphic patterns and inner systems tracts.The faulted slope-breaks control the development of lowstand fan delta sandbodies and combination structural-lithologic traps,while the flexural slope-breaks not only control the development of sandbodies,but more apparently control the development of stratigraphic overlap and lithologic traps.The surrounding areas of the slope-breaks are favorable for the development of non-structural traps,and have great potential for exploration.

关 键 词：黄骅坳陷 歧北凹陷 构造坡折带 层序构成样式 非构造圈闭 

分 类 号：TE122.1[石油与天然气工程—油气勘探]