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| An approach to prestack time migration in dip angle domain |
| WU Ji-Zhong |
| Exploration and Development Institute of Jidong Oilfield,Tangshan 063004,China |
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Abstract This paper proposes an approach to prestack time migration in dip angle domain,which can produce common dip-angle imaging gathers directly.Dip angles and imaging area can be determined on these gathers.The final imaging profile is right without migration noise,which could improve signal-to-noise ratio.This scheme was applied to real data of the Matouying structure in Napu sag,and the good results demonstrate that the approach to prestack time migration in dip angle domain has broad application prospects for low signal-to-noise ratio and big noise area.
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Received: 13 July 2016
Published: 20 August 2017
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