The solution of non-gas bright-spot and non-bright-spot gas identification: Elastic prediction

Bright spot (including stacked seismic brigh-spot and traditional AVO anomaly) does not mean high gas saturation hydrocarbon (maybe non reservoir, or brine, or low gas saturation hydrocarbon), and high gas saturation hydrocarbon maybe not exhibit bright-spot (maybe nonbright-spot) behavior especially in deep water area or deep gas situation. But high gas saturation hydrocarbon must exhibit low elastic properties (Poisson’s ratio, or density, etc.) behavior in the northern South China Sea and Gulf of Mexico. Quantitative elastic prediction is the effective solution of non-gas bright-spot and non-bright-spot gas identification problem in those areas.