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公开(公告)号:US09519072B2
公开(公告)日:2016-12-13
申请号:US11432269
申请日:2006-05-11
CPC分类号: G01V1/288 , E21B2043/0115 , G01V3/083 , G01V3/12 , G01V2210/647 , G01V2210/65
摘要: An exploration paradigm for detecting and/or characterizing gas hydrate deposits using either electromagnetic or seismic surveys, that accounts for the possibility that gas hydrate may accumulate in vertical or subvertical dikes. Geologic factors, such as the presence of the gas hydrate stability zone, indications that a prolific source of gas exists (or existed) below the gas hydrate stability zone and indications that a high flux of gas could be transported into the gas hydrate stability zone, may be considered as part of an exploration strategy. Data may be collected using seismic techniques, such as a walk-away vertical seismic profile techniques, or electromagnetic surveys that are adapted to detecting the presence of vertical or subvertical dikes. In one example, data processing and acquisition techniques may be adapted to detect hydrate dikes, and do not assume a horizontally isotropic earth model.
摘要翻译: 用于使用电磁或地震勘测来检测和/或表征天然气水合物沉积物的探索范例,这说明了天然气水合物可能在垂直或颠簸堤坝中积聚的可能性。 地质因素,如天然气水合物稳定区的存在,表明天然气水合物稳定区以下气体存在(或存在)多产的气源,可以将高通量的气体输送到气体水合物稳定区, 可能被认为是勘探战略的一部分。 可以使用地震技术(例如步行垂直地震剖面技术)或适用于检测垂直或颠簸堤坝存在的电磁勘探来收集数据。 在一个示例中,数据处理和采集技术可以适于检测水合物堤坝,并且不假定水平各向同性的地球模型。