Three-Dimensional Structure and Physical Properties of a Methane Hydrate Deposit and Methane Gas Reservoir, Blake Ridge

布莱克岭甲烷水合物矿床和甲烷气藏的三维结构和物理性质

• 批准号: 9910966
• 负责人: W Steven Holbrook
• 金额: $ 79.55万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9910966&HistoricalAwards=false
• 关键词: Three; Dimensional; Structure; Physical; Properties

A 3D seismic survey over the gas-hydrate field on Blake Ridge is planned with the objective to extend information from ODP sites drilled during Leg 164 over a part of the hydrate province. R/V Ewing will be used to obtain two related seismic data sets: 1) and 3D image of the hydrate deposits, and 2) a study of the P to S converted waves in the hydrate province. The obtained information, when combined with chemical, sedimentological and downhole logging information from Leg 164 will constitute a rare opportunity to establish benchmarck linkages between seismic signature (reflectivity, P-velocity, S-velocity) and amounts and distriubtion of hydrate and free gas. The data will also provide basic 3D geometries of stratigraphy, structures, hydrate concentration, and gas accumulations over the study area. The information provided by this experiment will help constrain serveral key processes that occur in gas hydrate provinces, including methanogenesis, hydrate formation and decomposition, and migration of free gas.

计划对布莱克海岭的天然气水合物气田进行三维地震勘探，目的是将第164航次钻探的ODP现场的信息扩展到水合物区的一部分。 R/V Ewing将用于获得两个相关的地震数据集：1）水合物矿床的三维图像，2）水合物区P到S转换波的研究。 所获得的信息与第164航次的化学、沉积学和井下测井信息相结合，将构成一个难得的机会，可以在地震特征（反射率、P速度、S速度）与水合物和游离气的数量和分布之间建立基准联系。 这些数据还将提供研究区域的地层、结构、水合物浓度和天然气聚集的基本3D几何形状。 该实验提供的信息将有助于约束天然气水合物区发生的几个关键过程，包括甲烷生成、水合物形成和分解以及游离气的迁移。