渤海湾盆地南堡凹陷高南地区下白垩统层序构成及成藏规律研究

发布时间：2018-06-02 13:00

本文选题：地层划分对比 + 沉积微相　；参考：《吉林大学》2015年硕士论文

【摘要】：近些年来对高南地区的前期研究越来越精细，经过对一批钻探井进行油藏评价，以及从油层顶面构造的确定到有效储集砂体分布的描述和有利岩性目标的落实，都达到了比较满意的钻探效果，加大了对高南断裂带深入勘探开发的需要。初步分析表明中浅层油藏主要受低级层序断层及砂体分布的控制，需要在低级层序断层及含油砂体等关键成藏要素精细刻画的基础上，深化研究成藏规律。高南地区是南堡陆地的重点地区之一，该区中浅层是油田开发产能建设重点含油层位，具有较大的扩边建产潜力，为了进一步研究，开展主要目的层各油组构造和断裂发育特征研究、准确落实构造，通过井震结合，在层序格架下开展岩性圈闭识别和储层预测，明确有利圈闭和优势储层发育区；开展成藏规律研究，建立高南地区油气成藏模式，在成藏模式指导下优选有利勘探目标，提出井位建议，，为产能建设提供优质储量区块。为了预测储层及为井位布置提供参考，对高南地区中浅层通过地层划分对比、沉积微相研究、地震属性分析等工作重新对比划分分层数据、井斜轨迹，对测试及生产数据进行计、整理，建立研究区资料数据库，开展地震属性分析并预测储层的分布。得到如下认识：东营组是扇三角洲推进到浅湖一半深湖湖盆中形成的一套以碎屑岩为主的沉积组合。存在有扇三角洲、水下重力流以及湖相沉积相。高南地区是高柳断层下降盘发育的滚动背斜，同沉积断层和同沉积背斜共同控制了构造古地貌，构造古地貌对高南沉积物分散体系和沉积体系的发育分布起到了主导性的控制作用。东营组有利储集砂体为水下分流河道砂、河口坝和湖底扇砂体，东一段以水下分流河道砂为主，东二和东三段湖底扇砂体也是有效储层。
[Abstract]:In recent years, the previous research in Gaonan area has become more and more sophisticated. Through the reservoir evaluation of a number of drilling wells, and from the determination of the top structure of the reservoir to the description of the distribution of the effective reservoir sand body and the implementation of the favorable lithologic target, Satisfactory drilling results have been achieved and the need for further exploration and development in the Gaonan fault zone has been increased. The preliminary analysis shows that the middle and shallow reservoirs are mainly controlled by the low-order sequence faults and the distribution of sand bodies. It is necessary to further study the law of reservoir formation on the basis of fine characterization of key reservoir forming elements such as low-order sequence faults and oil-bearing sand bodies. The Gaonan area is one of the key areas on Nanbao land, and the middle and shallow layers in this area are the key oil-bearing layers in the construction of oilfield production capacity. The structure and fault development characteristics of each oil group in the main target layer are studied, the structure is carried out accurately, the lithologic trap identification and reservoir prediction are carried out under the sequence framework through the combination of well and earthquake, and the favorable traps and favorable reservoir development areas are defined. The oil and gas accumulation model in Gaonan area was established, and favorable exploration targets were selected under the guidance of the reservoir formation model, and well location suggestions were put forward to provide high quality reserve blocks for productivity construction. In order to predict reservoir and provide reference for well location arrangement, it is useful to reclassify stratified data and slant trajectory through stratigraphic division and correlation, sedimentary microfacies study, seismic attribute analysis and so on in the middle and shallow layers of Gaonan area. The test and production data are calculated and sorted, the data database of the research area is established, the seismic attribute analysis is carried out and the reservoir distribution is predicted. The results are as follows: Dongying formation is a set of sedimentary assemblages mainly composed of clastic rocks which are formed in fan delta and half deep lake basin of shallow lake. There are fan delta, underwater gravity flow and lacustrine sedimentary facies. The Gaonan area is a rolling anticline developed from the descending plate of Gaoliu fault, which controls the tectonic paleogeomorphology together with sedimentary faults and synsedimentary anticlines. Tectonic paleogeomorphology plays a dominant role in controlling the development and distribution of sediment dispersion system and sedimentary system in Gaonan. The favorable reservoir sand bodies of Dongying formation are underwater distributary channel sand, estuarine dam and sublacustrine fan sand body. The east first member is dominated by underwater distributary channel sand, and the east second and third member lake sublake fan sand body is also an effective reservoir.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P534.53

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