Lithologic Reservoirs ›› 2017, Vol. 29 ›› Issue (6): 91-100.doi: 10.3969/j.issn.1673-8926.2017.06.012

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Application of reverse-time migration technology to complex structural imaging in Daqing exploration area

CHEN Keyang   

  1. Research Institute of Exploration & Development, PetroChina Daqing Oilfield Company Ltd., Daqing 163712, Heilongjiang, China
  • Received:2017-03-10 Revised:2017-05-25 Online:2017-11-21 Published:2017-11-21

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Abstract: The conventional seismic migration methods are difficult to solve complex structure accurate imaging of Daqing seismic data. The key factors on reverse-time migration precision were analyzed, such as finite difference method's order, absorbing boundary conditions, reverse-time imaging condition, wavelet phase correction, background noise suppression,reverse-time parameter optimization. A set of high-precision reverse-time migration techniques is improved in key algorithm and imaging results, which is applied to practical seismic data reverse-time migration in Daqing exploration area. The high-precision reverse-time migration technology is better than that of conventional Kirchhoff pre-stack depth imaging technology and conventional correlation reverse-time ima-ging technology. The results are of some reference to the theory,method,and practical application of reverse-time migration technology.

Key words: dynamic provenance, sequence stratigraphy, paleogeomorphic analysis, reservoir prediction, Yanan Sag, Qiongdongnan Basin

CLC Number: 

  • P631.4
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