|
|||||
|
|
Hanging-wall deformation and gas-migration associated to a major salt detaching fault in the Norwegian Danish Basin |
|
| Institution: | 1. Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark;2. Maersk Oil Copenhagen, Denmark;3. dGB Earth Sciences, Houston, USA;1. School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC, 3800, Australia;2. Instituto Geonorte, National University of Salta, INENCO-CONICET, Av. Bolivia 5150, 4400, Salta, Argentina;3. Centre for Lithospheric Research, Czech Geological Survey, Klárov 3, 118 21, Prague 1, Czech Republic;1. Dipartimento di Scienze della Terra, Università di Napoli Federico II, Naples, Italy;2. Dipartimento di Scienze della Terra e dell''Ambiente, Università di Pavia, Via Ferrata, 1, Pavia, Italy;1. ChronoEnvironnement, UMR 6249, Université de Franche Comté, 16 route de Gray, 25030 Besançon, France;2. Géosciences Montpellier, UMR 5243, Université Montpellier 2, 34095 Montpellier, France;3. DNO International ASA, Bryggegata 9, 0250 Oslo, Norway;4. Total, Jean Feger Scientific and Technical Center, Avenue Larribau, 64018 Pau, France |
| Abstract: | The central and southern regions of the North Sea Basin are characterized by mobile Zechstein Salt and represent an excellent area to study listric normal fault development related to halokinesis. The North Sea Basin–in spite of being a mature explored hydrocarbon producing basin-contains a generally not fully understood hydrocarbon plumbing system. Faults and associated fluid migration routes represent critical elements of the plumbing system. Here we present a combined 3D seismic mapping of a listric fault and detailed seismic attribute analysis of shallow gas anomalies near the fault implying a close and complex relationship between a major detaching fault, hangingwall deformation and fluid migration and entrapment. The fault and associated antithetic and secondary synthetic faults is controlled by the growth of the underlying salt structure. Three separate segments of the fault are recognized showing distinct and varying characteristics of structural maturity and fluid migration. The studied fault and shallow gas anomalies thus represent an example of a complex faulted shallow fluid migration system developing in relation to an underlying salt structure which could be relevant for understanding similar salt, fault and fluid migration systems around the world. |
| Keywords: | Hangingwall deformation Fluid migration 3D seismic Norwegian-Danish Basin Seismic attributes |
| 本文献已被 ScienceDirect 等数据库收录！ | |