基于地震反演的下印度盆地储层评价

发布时间：2018-05-09 17:33

本文选题：地震 + 地震反演　；参考：《中国地质大学》2016年博士论文

【摘要】：巴基斯坦下印度盆地具有重要的研究意义,其已被证实具有油气勘探潜力。本研究基于先进的地球物理勘探技术,如对油气勘探和开发都非常有意义的储层评价和储量评估,为该地区的地球物理勘探领域打开了新的视野。地震反演技术被用于构造、地层识别,圈闭机理的解释和储层表征。本文提出了一种新的岩石物理地震反演方法,将地震反演与储层评价建立了联系。本研究结合地震解释和反演,特别是地震属性及岩石物理地震反演新方法,得到储层品质评估的综合研究结果,为下印度盆地储层评价提供可靠的信息。本文主要得出以下五点重要结论：1)基于地质、构造和地层分析,通过研究区的地震解释和与井约束的地震反演,对下印度盆地进行了详细的区域地层和构造研究,解释了区域沉积中心和物源方向；2)下印度盆地白垩纪砂岩层具有大量的砂岩,有很多发现井控制了这些砂岩的总体分布,被认为具有广阔的研究前景;3)地震数据反演第一次应用于巴基斯坦的下印度盆地；4)地层评价研究第一次应用于该地区,将为油气储量评价做出重要贡献；5)基于以上研究,给出了下印度盆地的油气前景的估计。在下印度盆地地层评价的基础上,给出如下建议：(1)下印度盆地储层建模应该结合不同数据,共同描述储层的岩石属性；(2)利用地震数据进行储层参数估计是一个复杂的非线性反演问题,因此要用确定性的和概率的方法解决该问题,估计储层模型；(3)基于地震反演技术的构造和地层解释也应该应用于其他盆地；(4)这些先进技术在下印度盆地的应用,为石油勘探领域展示出了新的前景。(5)通过储层表征对印度盆地未勘探的区域和其他盆地进行研究是非常重要的。本文主要分为五个部分。第一章,研究区和数据简介,包括研究意义,可用的下印度盆地地震数据、下印度盆地测井及分层信息,以及数据准备情况和研究成果介绍；第二章,研究区构造和地层简介;第三章是地震解释和地震建模；第四章描述了研究区地震反演；第五章是储层评价；最后一章总结论文,指出存在的问题及未来的研究方向。
[Abstract]:The Lower India Basin in Pakistan is of great significance and has proven potential for oil and gas exploration. Based on the advanced geophysical exploration techniques, such as reservoir evaluation and reserve evaluation, which are of great significance for oil and gas exploration and development, this study opens up a new field of vision for geophysical exploration in this area. Seismic inversion techniques are used for structural, stratigraphic identification, interpretation of trap mechanism and reservoir characterization. In this paper, a new method of rock physical seismic inversion is proposed, which links seismic inversion with reservoir evaluation. Combined with seismic interpretation and inversion, especially the new seismic inversion method of seismic attribute and petrophysical inversion, the comprehensive research results of reservoir quality evaluation are obtained in this study, which provides reliable information for reservoir evaluation in Lower India Basin. This paper draws the following five important conclusions: (1) based on geological, structural and stratigraphic analysis, a detailed study of the regional stratigraphy and structure of the Lower India Basin is carried out through seismic interpretation and seismic inversion with well constraints in the study area. It is explained that there is a large amount of sandstone in the Cretaceous sandstone beds in the Lower Indian Basin, and many discovery wells control the overall distribution of these sandstone. The seismic data inversion is considered to be the first time to be applied to the evaluation of strata in the Lower India Basin of Pakistan, which will make an important contribution to the assessment of oil and gas reserves. The oil and gas prospects of the Lower Indian Basin are estimated. On the basis of the stratigraphic evaluation of the lower Indian basin, the following suggestions are given for reservoir modeling in the lower Indian basin: (1) the reservoir modeling of the lower Indian basin should be combined with different data. The estimation of reservoir parameters using seismic data is a complicated nonlinear inversion problem, so the deterministic and probability method should be used to solve the problem. It is estimated that reservoir model No. 3) structural and stratigraphic interpretation based on seismic inversion techniques should also be applied to other basins.) the application of these advanced techniques in lower Indian basins. It is very important to study the unexplored regions and other basins in Indian basin through reservoir characterization. This paper is divided into five parts. Chapter 1, introduction of research area and data, including significance of study, available seismic data of lower Indian basin, logging and stratigraphic information of lower Indian basin, data preparation and introduction of research results, chapter 2, introduction of structure and formation in the study area; The third chapter is seismic interpretation and seismic modeling; the fourth chapter describes seismic inversion in the study area; the fifth chapter is reservoir evaluation; the last chapter summarizes the paper, pointing out the existing problems and future research direction.
【学位授予单位】：中国地质大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：P618.13;P631.4

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