Seismic sedimentology has been widely used in Oil & Gas Exploration and Development industry. This is about the use of seismic data to study sedimentary rocks and the processes by which they form, and variety of techniques have been adopted in this emerging discipline, like Minus ninety degree rotation of seismic, Spectral Decomposition and Seismic inversion. The key objective is to obtain a high quality 2D image by Strata slice from these techniques. This 2D image contains lithological information from a certain geological time, and might help to delineate external reservoir architecture related to geomorphology and depositional model (such as channel, mouth bar and shoreface).

The conventional methods in Strata slice utilize either amplitude or frequency information. RGB blending, which divides the seismic into 3 cubes of different frequency band and blends together with Red, Green and Blue color, combines both amplitude and frequency information, thus RGB blending might provide a better image with rich information.

In this paper, the workflow of RGB blending contains 4 steps, the first step is to rotate the raw seismic by minus ninety degree, then the seismic amplitude could be used for lithological interpretation. The second step, based on the spectrum of the seismic, is to divide the seismic into 3 cubes of high, middle and low frequency band data through Marr wavelet transform. The summary of the 3 divided cubes should be very close to the seismic. In the third step, the amplitude of each three cubes will be converted into RGB color. The high, middle and low frequency band cube corresponds to Blue, Green and Red color respectively. The last step, blends the 3 color cubes together and do strata slice. The resultant 2D image will contain both amplitude and frequency information.

Seismic sedimentology study in one of producing field in Malaysia showed obvious applicability of RGB blending technique.

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