Application of Gaussian beam migration to VSP imaging

Acta Geophysica

article

Yang, Feilong¹  Sun, Hui² 

[1] College of the Geoscience and Engineering, Xi’an Shiyou University;Shandong Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Geological Science and Engineering, Shandong University of Science and Technology;Modeling and Imaging Laboratory, Earth and Planetary Sciences, University of California;MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University

关键词: Gaussian beam migration;    VSP imaging;    Prestack depth migration;    Plane wave decomposition;   

DOI  :  10.1007/s11600-019-00376-1

学科分类：地球科学(综合)

来源: Polska Akademia Nauk * Instytut Geofizyki

【 摘 要 】

Vertical seismic profiling (VSP) technology plays an important role in oil and gas exploration. It can obtain data in the well with higher resolution than conventional surface seismic imaging methods, and effectively identify small faults along the well, thereby improving the description accuracy of the reservoir. Gaussian beam migration (GBM) has the ability to calculate the multi-arrival travel time, which has the advantages of both high efficiency and high imaging accuracy. In this paper, the observation system and the local plane wave decomposition step will be adjusted to expand the prestack GBM into a VSP imaging method. A layer model and a complex model will be employed to verify the imaging ability of VSP GBM. The correctness of VSP GBM will be proved by practical data test through comparing the results of VSP GBM with Kirchhoff migration in surface seismic.

【 授权许可】

Unknown