Quantifying the Effects of Near-Surface Viscosity on Seismic Acquisition Geometry: A case study from Chepaizi Exploration Area, Junggar Basin (NW China)
Hongqin Ren*, Tao Liu, Xu Zhang, Jian Zhang and Renwei Ding
1. Shengli Branch, Sinopec Geophysical Co., Ltd., Shandong Dongying 257086, China
2. College of Earth Science and Engineering, Shandong University of Science and Technology, Shandong Qingdao 266590,
China
Abstract The Chepaizi Exploration Area, Junggar Basin (NW China) holds substantial importance for seismic exploration endeavors, yet it poses notable challenges due to the intricate nature of its subsurface and near-surface conditions. To address these challenges, we introduce a novel and comprehensive workflow tailored to evaluate and optimize seismic acquisition geometries while considering the impacts of near-surface viscosity. By integrating geological knowledge, historical seismic data, and subsurface modeling, we conduct simulations employing the visco-acoustic wave equation and reverse-time migration to produce detailed subsurface images. The quality of these images is quantitatively evaluated using a local similarity metric, a pivotal tool for evaluating the accuracy of seismic imaging. The culmination of this workflow results in an automated optimization strategy for acquisition geometries that enhances subsurface exploration. Our proposed methodology underscores the importance of incorporating near-surface viscosity effects in seismic imaging, offering a robust framework for improving the accuracy of subsurface imaging. Herein, we aim to contribute to
the advancement of seismic imaging methodologies by providing valuable insights for achieving high-quality seismic exploration outcomes in regions characterized by complex subsurface and near-surface conditions.
Fund: This work was supported by the Research on Vibroseis Ultra-wideband Excitation Technology in Re-exploration Area of Quasi Western Margin (Project No.:SG22-44K)
About author: Ren Hongqin, male, senior engineer, born in 1982; In 2005, he graduated from Southwest Petroleum Institute, majoring in Exploration Technology and Engineering. He has been engaged in geophysical exploration and acquisition technology research for a long time, and is committed to geophysical exploration technology research and field collection work in the Eastern exploration area, Hexi Corridor, Tarim Basin, Junggar Basin and other regions. He has undertaken and participated in a number of major national projects and scientifi c and technological research work of group companies, and has rich experience in geophysical exploration technology research and application. Email:sl-renhq.osgc@sinopec.com
Cite this article:
. Quantifying the Effects of Near-Surface Viscosity on Seismic Acquisition Geometry: A case study from Chepaizi Exploration Area, Junggar Basin (NW China)[J]. APPLIED GEOPHYSICS, 2024, 21(3): 433-439.
2024, Vol. 21 
