Application of high resolution seismic data processing technique to identify thin reservoir and low amplitude structure
Zhu Hong-chang1, Zhu Li1, Xuan Chang-hong1, Liu Sheng-yu1, Yu Xue-bin2
1. Geophysical Research Institute of Shengli Oilfield Branch Company,Sinopec,Dongying City,Shandong Province,257022,China;
2. Institute of Shanghai Branch Company of CNOOC,Shanghai City,200120,China
Abstract：In order to identify the thin reservoirs,the low amplitude structures,the small faults and the small scale geological bodies in the reservoir development,the high resolution technique which is aiming at protecting and raising the signal to noise ratio for the high frequency component was studied in this paper.With the technique the wavelet can be effectively compressed for post-stack data and pre-stack data,the frequency band can be expanded so the seismic data resolution can be raised.The application of the technique in the seismic data processing in Yongxin Block of Shengli exploration area show that the seismic resolution was raised,weak reflection became clearer,better imaging quality was achieved for the low amplitude structures,richer geological information were seen,and the main frequency of the exploration target was raised from 20～30Hz to 46～50Hz,the technique is very effective for raising the seismic data processing quality and resolving the imaging problem for the low amplitude structures in the terrestrial thin interbed reservoir.
