Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000234628> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W2000234628 abstract "Seismic multiples still present a major impediment to exploration on the North West Shelf of Western Australia. Considerable effort is being expended on the removal of multiple events from the seismic record to improve the quality of the image of the subsurface, hence reducing the risk of drilling dry holes. Most of the published multiple attenuation techniques to date are based on the premise that multiples are noise and hence need to be removed. The technique presented in this paper is based on the assumption that multiples are signal, and that image quality will be enhanced by assigning their energies to the appropriate place in the final migrated section. A new procedure has been developed for the pre-stack depth migration (PSDM) of seismic multiples which correctly images both primary and multiple energy to give a depth section without visible multiples. The three key processes in the PSDM process are the determination of a suitable velocity model, a method for the computation of travel-times, and a method of mapping seismic shot record data to the final output depth section. The velocity model in the new procedure can include horizontal, dipping planar, and irregular boundaries. Travel-time mapping is achieved by implementing Huygen's principle (Podvin and Lecomte, 1991) while also incorporating the curved wavefront approach of Schneider et al. (1992). By extending the work of Zhao (1996), reflections are modelled using the generalised exploding reflector model (Lambert, 1996) which was used by Manuel (1998) for modelling multiple reflections. This technique is capable of handling large velocity contrasts in structures with irregular boundaries. Zhao et al. (1998) showed how to map first and later arrivals arising from different travel paths in the subsurface. This new procedure treats primary and multiple events as first and later arrivals respectively, and maps them to the final depth section. Examples based on synthetically modelled data show that significant multiple content can be removed by using this new migration technique. The velocity models used for these examples are reasonably complex which enables the new technique to be tested quite rigorously. In most, if not all, depth migration procedures the resultant image quality is dependent on an accurate velocity model. A slightly inaccurate velocity model was used with the new procedure which still resulted in a reasonably accurate depth migrated section." @default.
- W2000234628 created "2016-06-24" @default.
- W2000234628 creator A5009270661 @default.
- W2000234628 creator A5020660585 @default.
- W2000234628 date "2000-03-01" @default.
- W2000234628 modified "2023-09-23" @default.
- W2000234628 title "Pre-stack depth migration of seismic multiples" @default.
- W2000234628 cites W2052170455 @default.
- W2000234628 cites W2172266364 @default.
- W2000234628 doi "https://doi.org/10.1071/eg00328" @default.
- W2000234628 hasPublicationYear "2000" @default.
- W2000234628 type Work @default.
- W2000234628 sameAs 2000234628 @default.
- W2000234628 citedByCount "1" @default.
- W2000234628 countsByYear W20002346282018 @default.
- W2000234628 crossrefType "journal-article" @default.
- W2000234628 hasAuthorship W2000234628A5009270661 @default.
- W2000234628 hasAuthorship W2000234628A5020660585 @default.
- W2000234628 hasConcept C11413529 @default.
- W2000234628 hasConcept C115961682 @default.
- W2000234628 hasConcept C120665830 @default.
- W2000234628 hasConcept C121332964 @default.
- W2000234628 hasConcept C127313418 @default.
- W2000234628 hasConcept C154945302 @default.
- W2000234628 hasConcept C164680029 @default.
- W2000234628 hasConcept C165205528 @default.
- W2000234628 hasConcept C174576160 @default.
- W2000234628 hasConcept C199360897 @default.
- W2000234628 hasConcept C20947056 @default.
- W2000234628 hasConcept C2778415886 @default.
- W2000234628 hasConcept C2982854487 @default.
- W2000234628 hasConcept C33923547 @default.
- W2000234628 hasConcept C41008148 @default.
- W2000234628 hasConcept C45374587 @default.
- W2000234628 hasConcept C9395851 @default.
- W2000234628 hasConcept C94375191 @default.
- W2000234628 hasConcept C99498987 @default.
- W2000234628 hasConceptScore W2000234628C11413529 @default.
- W2000234628 hasConceptScore W2000234628C115961682 @default.
- W2000234628 hasConceptScore W2000234628C120665830 @default.
- W2000234628 hasConceptScore W2000234628C121332964 @default.
- W2000234628 hasConceptScore W2000234628C127313418 @default.
- W2000234628 hasConceptScore W2000234628C154945302 @default.
- W2000234628 hasConceptScore W2000234628C164680029 @default.
- W2000234628 hasConceptScore W2000234628C165205528 @default.
- W2000234628 hasConceptScore W2000234628C174576160 @default.
- W2000234628 hasConceptScore W2000234628C199360897 @default.
- W2000234628 hasConceptScore W2000234628C20947056 @default.
- W2000234628 hasConceptScore W2000234628C2778415886 @default.
- W2000234628 hasConceptScore W2000234628C2982854487 @default.
- W2000234628 hasConceptScore W2000234628C33923547 @default.
- W2000234628 hasConceptScore W2000234628C41008148 @default.
- W2000234628 hasConceptScore W2000234628C45374587 @default.
- W2000234628 hasConceptScore W2000234628C9395851 @default.
- W2000234628 hasConceptScore W2000234628C94375191 @default.
- W2000234628 hasConceptScore W2000234628C99498987 @default.
- W2000234628 hasLocation W20002346281 @default.
- W2000234628 hasOpenAccess W2000234628 @default.
- W2000234628 hasPrimaryLocation W20002346281 @default.
- W2000234628 hasRelatedWork W157162552 @default.
- W2000234628 hasRelatedWork W2009645295 @default.
- W2000234628 hasRelatedWork W2015680315 @default.
- W2000234628 hasRelatedWork W2027737598 @default.
- W2000234628 hasRelatedWork W2068597125 @default.
- W2000234628 hasRelatedWork W2071116882 @default.
- W2000234628 hasRelatedWork W2085363363 @default.
- W2000234628 hasRelatedWork W2112433376 @default.
- W2000234628 hasRelatedWork W2125289264 @default.
- W2000234628 hasRelatedWork W2202950401 @default.
- W2000234628 hasRelatedWork W2301997818 @default.
- W2000234628 hasRelatedWork W2319992832 @default.
- W2000234628 hasRelatedWork W2331763055 @default.
- W2000234628 hasRelatedWork W2391626884 @default.
- W2000234628 hasRelatedWork W2520845960 @default.
- W2000234628 hasRelatedWork W2589982096 @default.
- W2000234628 hasRelatedWork W2897368141 @default.
- W2000234628 hasRelatedWork W2995030594 @default.
- W2000234628 hasRelatedWork W3021266522 @default.
- W2000234628 hasRelatedWork W1970421763 @default.
- W2000234628 isParatext "false" @default.
- W2000234628 isRetracted "false" @default.
- W2000234628 magId "2000234628" @default.
- W2000234628 workType "article" @default.