ODP典型水合物站位沉积物与烃类地球化学指标特征的对比研究

发布时间：2018-03-14 02:02

本文选题：ODP　切入点：天然气水合物　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】：天然气水合物这种新型清洁能源在世界各国受到了广泛重视。随着水合物开发大幕的拉开,对相关勘探开发技术的需求日益迫切。我国正在落实制定水合物开发规划,并计划于2030年前后实现商业化开发,因此目前亟需对水合物的勘探开发技术进行深入细致的研究。烃类地球化学方法是常用的水合物勘探技术之一,对于水合物的调查和研究具有十分重要的意义。目前我国常用的烃类地球化学方法数据大量来自于浅层沉积物的测试,这与ODP以钻井岩心为基础的测试存在着一定的差异。深度范围上的欠缺限制了烃类指标与其他水合物勘探指标之间的对比和联系,制约了方法的应用和发展,因此需要在垂向维度上进行细致的研究和深入的探索。国际大洋钻探ODP的一系列水合物专门航次为上述问题的解决提供了物质基础和研究材料。本文在国内外海洋水合物研究的基础上,采用与ODP公布的数据资料及成果进行对比的研究方法,探讨了游离烃、酸解烃等烃类地球化学指标在海洋水合物勘探中的意义,探究了井中沉积物指标与烃类地球化学指标及水合物赋存区之间的对应关系,尝试利用沉积物指标与烃类地球化学指标对水合物赋存区和赋存深度进行了联合判定。文章首次系统地总结了不同站位井中沉积物有机质若干指标特征及其与水合物赋存区游离烃指标之间的关系,详细地对比了碳酸盐含量及其同位素特征与酸解烃组分特征之间的相关性规律,将井中不同指标进行了对比与统一。这对于烃类地球化学勘探方法在深度范围上的应用和推广,有着重要的研究意义和应用价值。
[Abstract]:Natural gas hydrate, a new clean energy source, has been paid more and more attention in the world. With the development of gas hydrate, the demand for related exploration and development technology is becoming more and more urgent. It is planned to realize commercial development around 2030, so it is urgent to study the exploration and development technology of hydrates. Hydrocarbon geochemical method is one of the commonly used hydrate exploration techniques. It is of great significance for the investigation and study of hydrates. At present, the data of hydrocarbon geochemical methods commonly used in China come from the testing of shallow sediments. This is different from the ODP test based on drilling core. The lack of depth limits the comparison and relation between hydrocarbon indexes and other hydrate exploration indicators, and restricts the application and development of the method. Therefore, it is necessary to carry out detailed research and deep exploration on the vertical dimension. A series of special voyage of hydrate in ODP provides the material basis and research material for solving the above problems. This paper is in the sea at home and abroad. Based on the study of ocean hydrates, The significance of hydrocarbon geochemical indexes, such as free hydrocarbon, acidolytic hydrocarbon, etc. in marine hydrate exploration, is discussed by comparing with the data and results published by ODP. The relationship between sediment index in well and hydrocarbon geochemical index and hydrate occurrence area is studied. This paper attempts to use sediment index and hydrocarbon geochemical index to determine the occurrence area and depth of hydrate. For the first time, the characteristics of organic matter of sediment in different station wells and their relationship with water are systematically summarized. The relationship between the free hydrocarbon index in the complex occurrence area, The correlation law between carbonate content, its isotopic characteristics and acidolysis hydrocarbon component characteristics is compared in detail, and the different indexes in the well are compared and unified. This is the application and popularization of hydrocarbon geochemical exploration method in depth range. It has important research significance and application value.
【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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