2D seismic data processing methods in the Block D, West China
Zhang Gaocheng1, Zhou Gang2, Si Wei1, Zhang Juan1, Yang Dan1
1. Petroleum Geophysical Technology Research Institute, Henan Oilfield Branch Co., SINOPEC, Zhengzhou, Henan 450018, China;
2. Exploration and Development Institute, Northwest Oilfield Branch Co., SINOPEC, Urumqi Xinjiang 830011, China
Abstract：This paper discusses some seismic data processing methods in the Block D of West China. In order to improve seismic data imaging, first we use to mographic static correction, apply multi signal reconstruction to eliminate the surface waves and multi-domain combination to remove linear noise, and adopt high-precision Radon transform to remove multiples. Then, using constant phase rotation and surface-consistent approach, we perform wavelet shaping due to different seismic source such as dynamite and vibroseis. For enhancing the precision of migrated imaging, we build accurate velocity model, and use Kirchhoff prestack time migration. On final seismic sections, the signal-to-noise ratio is greatly improved, the imaging is accurate, and both wave group characteristics and various structural shapes are clear.
