Investigating the PS seismic imaging of faults using seismic modelling and data from the Snøhvit field, Barents Sea
Posted on 2021-11-29 - 14:04
PS seismic data from the Snøhvit field are compared with seismic modelling to understand the effect of azimuthal separation and incidence angle on the imaging of faults and associated horizon discontinuities. In addition, the frequency content of seismic waves backscattered from faults is analysed. The study area consists of a horst structure delimited by a northern fault dipping NW and oblique to the E-W survey orientation, and a southern fault dipping SSW and subparallel to the survey. Due to the raypath asymmetry of PS reflections, the northern fault is imaged better by azimuthally partitioned W data that include receivers downdip of the fault, relative to the sources, than by E data where the receivers are updip from the sources. Partial stack data show a systematic increase in the PS fault-reflected amplitude and therefore quality of fault imaging with increasing incidence angle. Fault images are dominated by internal low-medium frequency shadows surrounded by medium-high frequencies haloes. Synthetic experiments suggest that this is due to the interaction of specular waves and diffractions, and the spectral contribution from the fault signal, which increases with fault zone complexity. These results highlight the impact of survey geometry and processing workflows on fault imaging.
CITE THIS COLLECTION
DataCite
3 Biotech
3D Printing in Medicine
3D Research
3D-Printed Materials and Systems
4OR
AAPG Bulletin
AAPS Open
AAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)
Academic Medicine
Academic Pediatrics
Academic Psychiatry
Academic Questions
Academy of Management Discoveries
Academy of Management Journal
Academy of Management Learning and Education
Academy of Management Perspectives
Academy of Management Proceedings
Academy of Management Review
Cunningham, Jennifer; Weiball, Wiktor W.; Cardozo, Nestor; Iacopini, David (2021). Investigating the PS seismic imaging of faults using seismic modelling and data from the Snøhvit field, Barents Sea. Geological Society of London. Collection. https://doi.org/10.6084/m9.figshare.c.5727552.v1
or
Select your citation style and then place your mouse over the citation text to select it.
ORCID FOR SUBMITTING AUTHOR(s)
SHARE
Usage metrics
Read the peer-reviewed publication
AUTHORS (4)
JC
Jennifer Cunningham
WW
Wiktor W. Weiball
NC
Nestor Cardozo
DI
David Iacopini
CATEGORIES
KEYWORDS
synthetic experiments suggeststudy area consistshorst structure delimitedhigh frequencies haloesassociated horizon discontinuitiesseismic waves backscatteredw survey orientationincreasing incidence angleinclude receivers downdipfault zone complexityps seismic imagingincidence angleseismic modellingspecular wavesps reflectionsps faulttherefore qualitysystematic increasesurvey geometryspectral contributionsnøhvit fieldresults highlightreflected amplituderaypath asymmetryprocessing workflowsnorthern faultinternal lowimaged betterfrequency contentfault signalfault imagingfault imagesazimuthal separationGeology