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Direct Detection of Onshore Hydrocarbon Microseepages By Remote Sensing Techniques

机译：遥感技术直接检测陆上油气微渗漏

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摘要

Remote sensing to detect hydrocarbon microseepage onshore, has the advantage of recog- nizing marginal and submarginal low relief structural prospects and all stratigraphic traps that are overlooked by reflection seismograph, besides its fast speed and low cost. The hydro- carbon-induced surface alterations of soil and sediment and associated anomalous vegetation that can be identified from remote sensing imagery are reduction of ferric iron (red bed bleaching), conversion of mixed-layer clays and feldspars to kaolinite, increase of carbonate content and anomalous spectral reflectance of vegetation. Conventional remote sensing data mostly cover 0.4-2.5μm wavelength region with broad bandwidth that cannot characterize the absorption features caused by hydrocarbon microseepage. High spectral resolution imaging data are demanded.
机译：遥感探测陆上碳氢化合物微渗漏的优势在于，它能识别边缘和下边缘的低浮雕构造前景以及反射地震仪所忽略的所有地层圈闭，除了其速度快，成本低之外。碳氢化合物引起的土壤和沉积物表面变化以及相关的异常植被可以从遥感图像中识别出来，包括三价铁的减少（红床漂白），混合层粘土和长石向高岭石的转化，碳酸盐含量的增加植被的光谱反射率异常。常规遥感数据大多覆盖0.4-2.5μm波长范围，带宽较宽，无法表征烃类微渗漏引起的吸收特征。需要高光谱分辨率的成像数据。

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