Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Yongchae Cho"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-19 (2024)
Abstract The Engineering Ocean Seismic 3D system, which enables ultra-high-resolution seismic surveys on a smaller survey scale, was deployed in Yeongil Bay, Pohang, South Korea. The region is renowned for abundant shallow gas deposits and faults. Ba
Externí odkaz:
https://doaj.org/article/6676d0887f9d421786edbc404d171eda
Publikováno v:
Lithosphere, Vol 2024, Iss 2 (2024)
The ant-tracking algorithm is commonly used to extract faults in geological structures. However, obtaining 3D ant-tracking data requires the calculation of various volume attributes. To obtain satisfactory data, it is necessary to iterate through the
Externí odkaz:
https://doaj.org/article/8590141aeeea4106ac911c10b7710534
Publikováno v:
Geofluids, Vol 2022 (2022)
Estimating water saturation via conventional logging tool such as resistivity cannot provide an accurate solution in a formation with low conductivity water and tight porosity. As an alternative, we employed a dielectric permittivity, which makes it
Externí odkaz:
https://doaj.org/article/5e87ccd2884f4c05991395a25a6e6b5b
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
The common image gather (CIG) method enables qualitative and quantitative evaluation of the velocity model through the image. The most common such methods are offset-domain common image gather (ODCIG) and angle-domain common image gather (ADCIG). The
Externí odkaz:
https://doaj.org/article/f6c2f7eafbc349429fb5562f55702509
Autor:
Yongchae Cho, Carlos Pérez Solano, John Kimbro, Yi Yang, René-Édouard Plessix, Kenneth Matson
Publikováno v:
GEOPHYSICS. 87:R391-R400
Elastic full-waveform inversion (FWI) is superior to acoustic FWI due to its ability to simulate complex mode conversions in fast-varying elastic media. Using elastic FWI may become important when building velocity models in areas of large complex sa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3624c62219205769ecb29aaacf3d9366
https://doi.org/10.1190/geo2022-0014.1
https://doi.org/10.1190/geo2022-0014.1
Publikováno v:
GEOPHYSICS. 87:M217-M233
Estimating porosity models via seismic data is challenging due to the low signal-to-noise ratio and insufficient resolution of the data. Although impedance inversion is often used in combination with well logs, to obtain subseismic scale porosity dat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3f61e820b00bd44422b787cbb6ca374
https://doi.org/10.1190/geo2021-0754.1
https://doi.org/10.1190/geo2021-0754.1
Autor:
Yongchae Cho, Hyunggu Jun
Publikováno v:
Geophysical Journal International. 228:1150-1170
SUMMARY In an ideal case, the time-lapse differences in 4-D seismic data should only reflect the changes of the subsurface geology. Practically, however, undesirable discrepancies are generated because of various reasons. Therefore, proper time-lapse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d41415f8d042ac9d8a0e332fe5c037d
https://doi.org/10.1093/gji/ggab397
https://doi.org/10.1093/gji/ggab397
Autor:
Yongchae Cho
Publikováno v:
Interpretation. 9:SG47-SG58
The prediction of natural fracture networks and their geomechanical properties remains a challenge for unconventional reservoir characterization. Because natural fractures are highly heterogeneous and of subseismic scale, integrating petrophysical da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea407d9ae77516ae8f00e4cbe268a6ae
https://doi.org/10.1190/int-2020-0210.1
https://doi.org/10.1190/int-2020-0210.1
Publikováno v:
Geophysical Prospecting. 68:1456-1475
Although horizon interpretation is a routine task for building reservoir models and accurately estimating hydrocarbon production volumes, it is a labour‐intensive and protracted process. Hence, many scientists have worked to improve the horizon int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17fe9df60affcf97ec02b76bc34684aa
https://doi.org/10.1111/1365-2478.12933
https://doi.org/10.1111/1365-2478.12933
Publikováno v:
GEOPHYSICS. 85:T15-T32
Full-waveform inversion (FWI) is widely used to infer earth structures and rock properties. In FWI, most of the computation arises from the repeated simulations of wave propagation. Although frequency-domain implementations have several advantages, s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d0039bb2f16e1aa966e20f6f607bab7
https://doi.org/10.1190/geo2018-0850.1
https://doi.org/10.1190/geo2018-0850.1