Building very large scale depth velocity models for imaging and interpretation purposes is a challenging task that pushes the boundaries of software and hardware processing capabilities ( ). Here we demonstrate a model build over what we believe is one of the largest areas ever published (~35,000 km2), highlighting the application of high-end technology, with an attention to detail and a delivery schedule that just a few years ago would have only been possible on a small scale survey. We also examine how integrating large amounts of carefully selected and pre-processed well and stratigraphic data benefits the model building process.


Article metrics loading...

Loading full text...

Full text loading...


  1. Gabrielli, P., Jouno, F., Xiao, B., Iliev, I., Page, C., Schouten, R., Thompson, S., Cowley, J. and Ratcliffe, A.
    [2016] Velocity model building offshore Gabon – a vast step into the unknown. PETEX biennial PESGB conference and exhibition, H1-2-5.
    [Google Scholar]
  2. Latter, T., Gregory, M., Ratcliffe, A., Roberts, G., Xiao, B., Sood, R. and Purcell, C.
    [2018] Imaging through near-surface absorption bodies with visco-acoustic least-squares migration: a case study from the Northern Viking Graben. SEG International Exposition and 88th Annual Meeting
    [Google Scholar]
  3. JafarGandomi, A., Richardson, J., Hoeber, H., Galyga, M., Smith, P. and Irving, A.
    , [2018] Improved Reservoir Imaging Using Specular Dip-angle Migration. 80th EAGE Conference and Exhibition 2018.
    [Google Scholar]
  4. Xiao, B., Ratcliffe, A., Latter, T., Xie, Y. and Wang, M.
    [2018] Inverting near-surface absorption bodies with full-waveform inversion: a case study from the North Viking Graben in the Norwegian North Sea. 80th EAGE Conference and Exhibition, Extended Abstracts.
    [Google Scholar]
  5. Guillaume, P., Zhang, X., Prescott, A., Lambare, G., Reinier, M., Montel, J-P., and Cavalie, A.
    [2013] Multi-layer non-linear slope tomography. 75th EAGE Conference & Exhibition 2013
    [Google Scholar]
  6. Gamar, F., Guillaume, P., Pica, A., Pignot, G., Poggi, P., Henry-Baudot, A., Prescott, A., Gacha, A., Carotti, D. and Prieux, V.
    [2015] Automatic Gas Pockets Detection by High-resolution Volumetric Q-tomography Using Accurate Frequency Peak Estimation. 77th EAGE Conference & Exhibition 2015, Extended Abstracts.
    [Google Scholar]

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error