Key Technology and Application of Azimuthal Seismic Processing in Complex Mountain Area of the Junggar Basin
The piedmont thrust belt in the southern margin of the Junggar Basin has long been an important oil and gas exploration area in western China.However,its complex structure and the characteristics of thrust fault development also bring great challenges to oil and gas exploration.Especially with the popularization of"two width and one height"data,the omni-directional processing mode is increasingly difficult to meet the needs of deep fine exploration.Therefore,taking the Anjihai anticline as an example,this paper proposes a complete set of azimuth processing flow to solve the problem of combined azimuth anisotropy under it.It includes azimuthal velocity analysis,azimuthal global optimization residual static correction,OVT domain prestack time migration and weighted stacking technology.The application of these tech-nologies has effectively improved the problems of unclear breakpoint faults and multi-solution of structural styles in this area,and has certain production and popularization value.
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