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90°相位转换快速高效识别油气储层的方法已经在油气地震勘探界广泛接受,但地震储层的调谐厚度与储层实际厚度匹配良好是该技术应用的必要条件之一,这就大大限制了该技术在中深层中低频、高速砂泥岩地层中的应用。尝试采用宽频+逆散射级数法的鬼波压制处理结合90°相位转换技术,破解该技术在中深层应用瓶颈。通过利用上述技术在南海L地区中深层的2880层复杂叠置砂体识别实验,应用效果良好,较好分辨2880层3套孤立砂体横向分布和接触关系,并为该区下一步油田开发提供了依据。这套组合技术的应用不仅对该区油田开发具有指导意义,同时拓展了90°相位技术在中深层目的层勘探层的应用,为海上中深层地震资料上快速识别复杂叠置砂体提供了一种技术手段。
The method of rapidly and efficiently recognizing oil and gas reservoirs by 90 ° phase transition has been widely accepted by the oil and gas seismic exploration community. However, it is one of the necessary conditions for the application of this technique that the tuned thickness of the seismic reservoir and the actual thickness of the reservoir are well matched The application of this technology in medium-low-frequency, high-speed sandstone shale formation. Attempts to use the ghost suppression method of broadband + inverse scattering series method combined with 90 ° phase conversion technology, to crack the bottleneck of the technology in the middle and deep application. By using the above technique, the experiment of 2880-layer complex overlying sand body identification in the middle and deep layers of the L region in the South China Sea has good application effect, and the lateral distribution and contact relationship of 3 sets of isolated sand bodies in 2880 layers are well resolved and provided for the next oilfield development in this area The basis. The application of this combination technology not only instructs the development of oilfields in this area, but also extends the application of 90 ° phase technology in the exploration of middle-deep target formation, providing a quick identification of complex superimposed sandbodies on medium- and deep-sea seismic data Kind of technical means.