1887

Abstract

Summary

Prior to deep water exploration drilling it is important to identify geologic hazards both on the sea bottom and in the overburden that could affect drilling operations. This 5000 sq km case study, from the Angoche basin, offshore Mozambique, covers a deep-water block. High-resolution processing of frequency range 0–250 Hz, provided further detail for shallow-hazard assessment. The key high-resolution processing steps such as 3D deghosting, denoise, regularization & interpolation, imaging and post stack image enhancement techniques provide a clear image of the subsurface and facilitate shallow-hazard identification and interpretation work. This case study demonstrates recent broadband acquisition, processing advancements and careful consideration of the processing parameters enabled generation of high-resolution seismic cubes for shallow-hazard analysis. Interpretation of this shallow hazard data set enabled identification of potential hazards, that includes shallow channels, faults, and mass transport complexes (MTCs). Fine scale imaging provided detailed images of internal deformations within the mass transport complex.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201901127
2019-06-03
2024-03-28
Loading full text...

Full text loading...

References

  1. Dragoset, B., Moore, I., Yu, M., and Zhao, W.
    [2008] 3D general surface multiple prediction: An algorithm for all surveys. 78th Annual International Meeting, SEG, Expanded Abstracts, 2426–2430.
    [Google Scholar]
  2. Özbek, A., Vassallo, M., van Manen, D.-J. and Eggenberger, K.
    [2010] Crossline wavefield reconstruction from multi-component streamer data: joint interpolation and 3D up/down separation by generalized matching pursuit. 80th Annual International Meeting, SEG, Expanded Abstracts, 3599–3603.
    [Google Scholar]
  3. Rickett, J., van Manen, D.J., Loganathan, P. and Seymour, N.
    [2014] Slanted-streamer data-adaptive deghosting with local plane waves.76th Annual International Conference and Exhibition, EAGE, Extended Abstracts, 10.3997/2214–4609.20141453.
    https://doi.org/10.3997/2214–4609.20141453 [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901127
Loading
/content/papers/10.3997/2214-4609.201901127
Loading

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