Omnidirectionally sampled 3D seismic data give detailed insights into fault-fold relations
- Andreas Laake (WesternGeco)
- Document ID
- Society of Exploration Geophysicists
- 2018 SEG International Exposition and Annual Meeting, 14-19 October, Anaheim, California, USA
- Publication Date
- Document Type
- Conference Paper
- 2018. Society of Exploration Geophysicists
- Interpretation, 3D, Broadband, Faults, High-resolution
- 0 in the last 30 days
- 9 since 2007
- Show more detail
Concepts for the relation between faults and folds in an extensional regime have revealed the importance of detailed mapping of fault zones, particularly in combined structural-stratigraphic traps. We show in a case study from the Australian North West Shelf that extensional fault zones are composed of several individual faults. Depending on the depth within the faulted interval, the individual faults may be interrupted by relay ramps. Additionally, release faults perpendicular to the main faults may introduce further potential breaches of the fault seal. Understanding the faults within the reservoir at this level of detail will assist in better understanding the fault seal risk for combined structural-stratigraphic traps. Omnidirectionally sampled 3D seismic data are well-suited to provide the data quality sufficient for this interpretation approach.
Presentation Date: Wednesday, October 17, 2018
Start Time: 8:30:00 AM
Location: 210A (Anaheim Convention Center)
Presentation Type: Oral
|File Size||7 MB||Number of Pages||5|
Australian Government, Geoscience Australia, Carnarvon Basin,2018,http://www.ga.gov.au/scientific-topics/energy/province-sedimentary-basin-geology/petroleum/offshore-northwest-australia/canarvon,accessed 25 February 2018.
Black,M.,K. D.McCormack,C.Elders, andD.Robertson,2017,Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia:Marine and Petroleum Geology,85,301–315,10.1016/j.marpetgeo.2017.05.022.
Destro,N.,1995,Release fault: A variety of cross fault in linked extensional fault systems, in the Sergipe-Alagoas Basin, NE Brazil:Journal of Structural Geology,17,615–629,10.1016/0191-8141(94)00088-H.
Khalil,S. M., andK. R.McClay,2017,3D geometry and kinematic evolution of extensional fault-related folds, NW Red Sea, Egypt,inC.Childs,R. E.Holdsworth,C. A.-L.Jackson,T.Manzocchi,J. J.Walsh, andG.Yielding,eds.,The geometry and growth of normal faults:Geological Society, London, Special Publications439,109–130.
Laake,A.,J.Perdomo,N.Seymour, andA.Imamshah,2017,The importance of omnidirectional sampling for geologic interpretation of seismic data, Flemish Pass area, offshore Newfoundland:87th Annual International Meeting, SEG,Expanded Abstracts,1872–1876,10.1190/segam2017-17666908.1.
Robertsson,J. O. A.,I.Moore,M.Vassallo,A. K.Özdemir,D. J.van Manen, andA.Özbek,2008,On the use of multicomponent streamer recordings for reconstruction of pressure wavefields in the crossline direction:Geophysics,73,no.5,A45–A49,10.1190/1.2953338.
Stewart,S. A.,2001,Displacement distributions on extensional faults: Implications for fault stretch, linkage, and seal:AAPG Bulletin,85,587–599,10.1306/8626c951-173b-11d7-8645000102c1865d.