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- W2247267524 abstract "This paper discusses the importance of creating high definition geologic velocity models through a workflow defined by three steps: a) adequate conditioning of PSTM gathers, b) incorporating the knowledge of local geology and well velocities during velocity analysis and c) using an efficient automatic picking method to handle the velocity picking in every CDP gather. Availability of such velocity models becomes relevant for studies such as geo-pressure, geo-hazards, rock properties calculations, and other velocity-seismic analysis methods used in exploration and production. We expanded the use of this methodology to the problem of time-to-depth conversion. While velocity models generated through this method are more accurate, they generally require further refinement that is basically controlled by understanding mismatches between well tops and the corresponding seismic horizons, as observed in a layer by layer case. We present results of generating high definition geologic velocity models that are used subsequently, in depth conversion of PSTM stack volumes and interpreted horizons in areas from the Norwegian Sea. The understanding of velocity changes and their impact on depth estimates is achieved by spatial mapping through the entire process. Final depth results are more geologically constrained using this methodology." @default.
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- W2247267524 date "2015-06-01" @default.
- W2247267524 modified "2023-09-23" @default.
- W2247267524 title "Application of High Definition Geologic Velocity Models to Depth Conversion Problems" @default.
- W2247267524 doi "https://doi.org/10.3997/2214-4609.201412731" @default.
- W2247267524 hasPublicationYear "2015" @default.
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