Zobrazeno 1 - 10
of 393
pro vyhledávání: '"Ru-Shan Wu"'
Publikováno v:
IEEE Access, Vol 8, Pp 34598-34610 (2020)
Pre-stack reverse time migration (RTM) based on the two-way wave equation has been proved to be the most accurate seismic migration method theoretically. However, it requires reverse-order access to the wavefield calculated in forward time. In recurs
Externí odkaz:
https://doaj.org/article/48089021d06f492c8d0638040beeb263
Publikováno v:
Remote Sensing, Vol 15, Iss 3, p 746 (2023)
Strong-scattering medium can usually form a good sealing medium for oil and gas resources. However, conventional elastic full-waveform inversion (EFWI) methods are difficult to build reliable velocity models under the condition of lacking low-frequen
Externí odkaz:
https://doaj.org/article/2e0167e7714f40db810e64a7d4af7fcf
Publikováno v:
International Journal of Geophysics, Vol 2012 (2012)
Most of the wavefield downward continuation migration approaches are relying on one-way wave equations, which move the seismic energy always in one direction along depth. The one-way downward continuation migrations only use the primaries for imaging
Externí odkaz:
https://doaj.org/article/b2b8b50b314c4432bb6a5bda4c1f590a
Publikováno v:
GEOPHYSICS. :1-88
Correct subsalt structure recovery is important for subsalt reservoirs exploration. However, high precision subsalt structure retrieving using full waveform inversion (FWI) is not easy caused by the shielding from salt body and the depth of the targe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d0bd9950b1c412712b1447276c21a79
https://doi.org/10.1190/geo2022-0550.1
https://doi.org/10.1190/geo2022-0550.1
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 61:1-14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a5d9f7ebf0228d9b6048cd9bf2c0e66
https://doi.org/10.1109/tgrs.2023.3243218
https://doi.org/10.1109/tgrs.2023.3243218
Publikováno v:
Petroleum Science. 19:2046-2063
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9a82fc024579f74a197f5164b390611
https://doi.org/10.1016/j.petsci.2022.05.007
https://doi.org/10.1016/j.petsci.2022.05.007
Publikováno v:
GEOPHYSICS. 87:R245-R260
Large-scale geologic structures with strong contrasts present difficulties for seismic imaging and inversion. Previously, direct envelope inversion (DEI) with ultralow frequency has been proposed to retrieve strong-contrast velocity models. However,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c74d8269c7b0e9075d0057d208fb0d38
https://doi.org/10.1190/geo2020-0956.1
https://doi.org/10.1190/geo2020-0956.1
Publikováno v:
Journal of Inverse and Ill-posed Problems. 30:307-321
Total variation regularization is widely used in geophysical inverse problems for preserving the edges of geological structures. However, it may lead to staircase artifacts and other inversion errors. To overcome this drawback, we present an impedanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::795c26221dd0f1ab03cf9fad09ba3286
https://doi.org/10.1515/jiip-2018-0074
https://doi.org/10.1515/jiip-2018-0074
Autor:
Zhiwei Gu, Ru-Shan Wu
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 60:1-11
Marchenko equation-based imaging methods have been proved as an effective way to remove the internal multiples. Conventional Marchenko imaging needs the reflection response at the surface and an estimate of the direct arrival times from the virtual s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a41debc714a03ada83d5d522427f7a4
https://doi.org/10.1109/tgrs.2021.3080210
https://doi.org/10.1109/tgrs.2021.3080210
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 19:1-5
Full waveform inversion (FWI) is, as an optimization problem, strongly nonconvex and is influenced intensely by the cycle skipping issue, especially for multiparameter inversions like the elastic case. When there are strong scattering heterogeneities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c06eafe12380cb82cbbac91aa2781640
https://doi.org/10.1109/lgrs.2021.3061972
https://doi.org/10.1109/lgrs.2021.3061972