饶阳凹陷肃宁地区古近系沉积相研究

发布时间：2018-03-08 06:09

本文选题：饶阳凹陷　切入点：肃宁地区　出处：《中国地质大学(北京)》2015年硕士论文　论文类型：学位论文

【摘要】：肃宁地区位于饶阳凹陷中部,紧邻河间富油洼槽区,剩余油气资源丰富,是油气预探的重点靶区。该区构造背景好、油源条件优选,但受远离物源区和古地貌影响,沉积相展布复杂,储层分布变化较快。由于对沉积相平面展布及砂体的空间展布规律认识不清,已经严重制约的油气勘探工作。为此,加强沉积体系与砂体预测研究成为了本区地层岩性油气藏勘探的关键。本论文期望通过研究饶阳凹陷肃宁地区古近系(Es1~Ed3段)沉积相,从形态、范围、分布和侧向、垂向上的连通非均质性等几个方面来探讨其储集砂体特征,沉积类型并进一步分析其对油气成藏的控制作用,以期对油田的进一步勘探和开发提供帮助。研究过程中,以饶阳凹陷肃宁地区古近系Es1~Ed3为主要目的层,以砂体刻画与输导体系评价为核心,综合应用地震资料、岩心资料、测录井资料和地质背景资料,系统建立研究区主要研究层段的等时地层格架,并通过分析相关井岩心、单井相和连井相来探寻其沉积相类型及分布规律,精细研究目的层砂体展布特征。现已明确了该区为流域下游曲流河沉积,具备形成岩性油气藏的有利条件;利用层序地层学理论等精细刻画砂体展布,进一步落实岩性圈闭的发育特征,明确油气勘探靶区;确定了“断砂耦合,下生上储”岩性油藏成藏新模式,明确了“纵向叠置富集、横向复合连片”的油气富集规律,指导勘探取得新发现。
[Abstract]:The Suning area is located in the middle of Raoyang sag, adjacent to the oil-rich depression in Hejian, and is rich in remaining oil and gas resources. It is a key target area for oil and gas preexploration. The area has a good tectonic background and excellent oil source conditions, but is affected by the remote source area and paleogeomorphology. The distribution of sedimentary facies is complex and the reservoir distribution changes rapidly. Because of the unclear understanding of the distribution of sedimentary facies plane and the spatial distribution of sand bodies, the exploration of oil and gas has been seriously restricted. Strengthening the study of sedimentary system and sand body prediction has become the key to the exploration of stratigraphic lithologic reservoirs in this area. This paper expects to study the sedimentary facies in the Paleogene of the Suning area, Raoyang Sag, from the shape, range, distribution and lateral direction. The vertical connected heterogeneity and other aspects are used to discuss the reservoir sand body characteristics, sedimentary types and further analysis of its controlling effect on oil and gas accumulation, in order to provide help for further exploration and development of oil fields. Taking the Paleogene Es1~Ed3 in Suning area of Raoyang depression as the main target layer, taking the sand body description and the evaluation of the transportation system as the core, the seismic data, core data, logging data and geological background data are used synthetically. The isochronous stratigraphic framework of the main strata in the study area is systematically established, and the types and distribution of sedimentary facies are explored by analyzing the core, single well facies and even well facies of related wells. The distribution characteristics of sand bodies in the target layer are studied in detail. It has been determined that the area is a meandering river deposit in the lower reaches of the basin, which has favorable conditions for forming lithologic reservoirs, and the distribution of sand bodies is characterized by sequence stratigraphy theory. The development characteristics of lithologic traps are further carried out, the target areas for oil and gas exploration are defined, a new model of reservoir formation in lithologic reservoirs with "sand fault coupling, lower generation and upper reservoir" is established, and the oil and gas enrichment law of "vertical superposition enrichment, horizontal composite continuous slice" is defined. Guide exploration to new discoveries.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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