饶阳凹陷肃宁地区新生代断裂活动及其对油气成藏的控制作用

发布时间：2018-02-27 07:46

本文关键词： 断裂活动油气成藏新生代饶阳凹陷渤海湾盆地　出处：《油气地质与采收率》2017年03期 　论文类型：期刊论文

【摘要】：断裂活动对裂陷盆地的形成、演化及油气成藏具有重要影响。利用渤海湾盆地饶阳凹陷肃宁地区的三维地震数据及钻井、测井资料分析新生代断裂活动性,并在此基础上探讨断裂活动对油气成藏的控制作用。研究结果表明,肃宁地区新生代的断裂活动具有明显的阶段性;古近纪可分为孔店组—沙四段沉积时期、沙三段—沙二段沉积时期、沙一段—东营组沉积时期共3期由弱变强的断裂活动幕,其中沙三段—沙二段沉积时期和沙一段—东营组沉积时期为研究区构造活动最强烈的2期断裂活动幕;新近纪以来,研究区仅在明化镇组沉积早期发生断裂微弱活动。肃宁地区新生代的断裂活动对油气成藏具有重要的控制作用,主要表现为古近纪最强烈的2期断裂活动幕形成2套优质烃源岩,强伸展作用控制富烃洼槽的形成,断裂演化过程控制潜山圈闭的发育与定型,并影响沉积体系的演化与砂体展布。受断裂活动的控制,研究区发育新生古储型断裂—不整合侧向供烃成藏模式和新生新储型多期充注混源成藏模式。
[Abstract]:Fault activity plays an important role in the formation, evolution and hydrocarbon accumulation of rift basins. Using 3D seismic data and drilling data of Suning area in Raoyang Sag, Bohai Bay Basin, well logging data are used to analyze the Cenozoic fault activity. On this basis, the controlling effect of fault activity on hydrocarbon accumulation is discussed. The results show that the Cenozoic faulting activities in Suning area have obvious stages, Paleogene can be divided into the sedimentary period of Kongdian formation and the fourth member of Shahejie formation. The sedimentary period between the third and second member of the Shahejie formation and the sedimentary period of the first and Dongying formation of the Shahejie formation are from weak to strong fault activity episodes. The sedimentary period between the third and second member of the Shahejie formation and the sedimentary period of the first member of the Shayi formation and the Dongying formation are the two most active fault activity episodes in the study area, and since the Neogene, In the study area, the weak fault activity occurred only in the early sedimentary period of Minghuazhen formation. The Cenozoic fault activity in Suning area plays an important role in controlling oil and gas accumulation. Two sets of high quality hydrocarbon source rocks were formed in the active episode of the second stage of Paleogene, the strong extensional action controlled the formation of hydrocarbon rich depression, and the evolution of the fault controlled the development and stereotype of buried hill traps. It also affects the evolution of sedimentary system and the distribution of sand bodies. Under the control of fault activity, the study area developed a new type of paleo-reservoir fault-unconformable lateral hydrocarbon supply reservoir model and a new new type of multi-stage injection-filled and mixed-source reservoir model.
【作者单位】：中国石油华北油田分公司第三采油厂;西北大学大陆动力学国家重点实验室;中国石油大学(北京)油气资源与探测国家重点实验室;
【基金】：国家科技重大专项“近海富烃凹陷资源潜力再评价和新区、新领域勘探方向”(2011ZX05023-001)
【分类号】：P618.13

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