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    • 5. 发明授权
    • Oil and gas exploration system and method for detecting trace amounts of hydrocarbon gases in the atmosphere
    • 石油和天然气勘探系统和大气中痕量烃类气体检测方法
    • US06509566B1
    • 2003-01-21
    • US09602096
    • 2000-06-22
    • Paula R. WamsleyCarl S. WeimerLoren D. NelsonMartin J. O'Brien
    • Paula R. WamsleyCarl S. WeimerLoren D. NelsonMartin J. O'Brien
    • G01N2145
    • G01N21/39G01N21/3504G01N2021/394
    • An oil and gas exploration system and method for land and airborne operations, the system and method used for locating subsurface hydrocarbon deposits based upon a remote detection of trace amounts of gases in the atmosphere. The detection of one or more target gases in the atmosphere is used to indicate a possible subsurface oil and gas deposit. By mapping a plurality of gas targets over a selected survey area, the survey area can be analyzed for measurable concentration anomalies. The anomalies are interpreted along with other exploration data to evaluate the value of an underground deposit. The system includes a differential absorption lidar (DIAL) system with a spectroscopic grade laser light and a light detector. The laser light is continuously tunable in a mid-infrared range, 2 to 5 micrometers, for choosing appropriate wavelengths to measure different gases and avoid absorption bands of interference gases. The laser light has sufficient optical energy to measure atmospheric concentrations of a gas over a path as long as a mile and greater. The detection of the gas is based on optical absorption measurements at specific wavelengths in the open atmosphere. Light that is detected using the light detector contains an absorption signature acquired as the light travels through the atmosphere from the laser source and back to the light detector. The absorption signature of each gas is processed and then analyzed to determine if a potential anomaly exists.
    • 基于对大气中微量气体的远程检测,用于陆地和空中作业的油气勘探系统和方法,用于定位地下烃沉积物的系统和方法。 大气中一种或多种目标气体的检测用于表示可能的地下油气沉积物。 通过在选定的测量区域上映射多个气体目标,可以分析测量区域的可测量的浓度异常。 这些异常与其他勘探数据一起被解释,以评估地下沉积物的价值。 该系统包括具有光谱级激光和光检测器的差分吸收激光雷达(DIAL)系统。 激光可以在2到5微米的中红外范围内连续调节,用于选择适当的波长来测量不同的气体,并避免干扰气体的吸收带。 激光具有足够的光能以测量长达一英里和更长的路径上的气体的大气浓度。 气体的检测基于在开放气氛中的特定波长处的光吸收测量。 使用光检测器检测的光包含当光从激光源穿过大气并且返回到光检测器时所获取的吸收特征。 对每种气体的吸收特征进行处理,然后进行分析,以确定是否存在潜在的异常现象。