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Estimation of elastic constants for HTI media using Gauss-Newton and full-Newton multiparameter full-waveform inversion
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pan, Wenyong Innanen, Kristopher A. Margrave, Gary F. Fehler, Michael Fang, Xinding Li, Junxiao |
| Copyright Year | 2016 |
| Abstract | ABSTRACTIn seismic full-waveform inversion (FWI), subsurface parameters are estimated by iteratively minimizing the difference between the modeled and the observed data. We have considered the problem of estimating the elastic constants of a fractured medium using multiparameter FWI and modeling naturally fractured reservoirs as equivalent anisotropic media. Multiparameter FWI, although promising, remains exposed to a range of challenges, one being the parameter crosstalk problem resulting from the overlap of Frechet derivative wavefields. Parameter crosstalk is strongly influenced by the form of the scattering pattern for each parameter. We have derived 3D radiation patterns associated with scattering from a range of elastic constants in general anisotropic media. Then, we developed scattering patterns specific to a horizontal transverse isotropic (HTI) medium to draw conclusions about parameter crosstalk in FWI. Bare gradients exhibit crosstalk, as well as artifacts caused by doubly scattered energy in ... |
| File Format | PDF HTM / HTML |
| DOI | 10.1190/geo2015-0594.1 |
| Alternate Webpage(s) | http://dspace.mit.edu/openaccess-disseminate/1721.1/106926 |
| Alternate Webpage(s) | https://dspace.mit.edu/openaccess-disseminate/1721.1/106926 |
| Alternate Webpage(s) | https://dspace.mit.edu/bitstream/handle/1721.1/106926/Estimation%20of%20elastic.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://www.crewes.org/ForOurSponsors/ConferenceAbstracts/2015/SEG/Pan_W_SEG_2015.pdf |
| Alternate Webpage(s) | https://doi.org/10.1190/geo2015-0594.1 |
| Volume Number | 81 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
