Near-Surface Modeling Using First Arrival Tomography: A Case Study on High Variation Topography and High Surface Energy Attenuation Area

41st HAGI Annual Convention and Exhibition 2016

Suroso, Teguh^1 ; Datametriana, Aurum^1

Pertamina-Upstream Technology Center, Jakarta, Indonesia^1

关键词: Acquisition geometry;    Conventional methods;    First arrival;    High surface energy;    Near surface velocity model;    Near surfaces;    Seismic datas;    Velocity model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/132/1/012011/pdf
DOI  :  10.1088/1755-1315/132/1/012011

来源: IOP

【 摘 要 】

This paper describes a method to build a near-surface velocity model. The purpose of this work is to have a better understanding of the near-surface condition below area with high variation topography and high surface energy attenuation. The velocity model built then was used as input for statics calculation. The method applied to this work is first arrival tomography. This method was tested using two datasets with different acquisition geometries. And to verify the result, we compare the calculated statics correction with a conventional method. The results of this work is two similar near-surface models with detail model and the statics applied on the seismic data showed better correction compare to the conventional one. We conclude that the method is applicable accurately on the area with high variation of topography and high surface energy attenuation.