Publications

Limited resolution of seismic data is a common issue encountered in exploration, especially in zones with a thickness below the tuning thickness. Seismic signal processing by widening the frequency bandwidth can increase seismic resolution. This research was conducted on Penobscot 3D seismic, Nova Scotia, using the Short-Time Fourier Transform Half Cepstrum (STFTHC) algorithm, which can widen frequency bandwidth. This method uses a Gaussian window to take signal chunks then combines the advantages of STFT and Cepstrum to get a broader frequency spectrum. Window’s parameters is crucial particularly ensuring the signal chunk could be considered as a stationary signal and also to avoid spectral leakage; in this study, a Gaussian window with a window length of 16, α value of 4 was selected and hop size a quarter of the window length used. The application of the STFTHC algorithm on 3D Penobscot seismic data successfully increased seismic resolution, therefore most of the layers that was once interfered each other could be separated at targeted formation in Penobscot Field. After STFTHC process the layer became quite well resolved. The increase of seismic resolution could be seen in the improvement of tuning thickness from 74,382 m to 52,135 m. The use of enhanced seismic data also improved well seismic tie correlation from 0.844 to 0.805.