TY - GEN

T1 - Full waveform inversion for elastic waves

T2 - 79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter

AU - Gadylshin, K.

AU - Chavent, G.

AU - Tcheverda, V.

PY - 2017/7

Y1 - 2017/7

N2 - The paper develops a reliable numerical method to solve inverse dynamic problem for elastic waves equation on the base of nonlinear least-squares formulation which is widely known as Full Waveform Inversion (FWI). The key issue on this way is correct reconstruction of macrovelocity component of the model with input seismic data without time frequencies less than 5-7Hz and reasonable source-recievers offsets. To provide correct macrovelocity reconstruction we introduce modified elastic FWI formulation which is sensitive to smooth space variations of both Vp- and Vs-velocity distributions.

AB - The paper develops a reliable numerical method to solve inverse dynamic problem for elastic waves equation on the base of nonlinear least-squares formulation which is widely known as Full Waveform Inversion (FWI). The key issue on this way is correct reconstruction of macrovelocity component of the model with input seismic data without time frequencies less than 5-7Hz and reasonable source-recievers offsets. To provide correct macrovelocity reconstruction we introduce modified elastic FWI formulation which is sensitive to smooth space variations of both Vp- and Vs-velocity distributions.

UR - http://www.scopus.com/inward/record.url?scp=85088068179&partnerID=8YFLogxK

U2 - 10.3997/2214-4609.201700508

DO - 10.3997/2214-4609.201700508

M3 - Conference contribution

AN - SCOPUS:85088068179

T3 - 79th EAGE Conference and Exhibition 2017

BT - 79th EAGE Conference and Exhibition 2017

PB - European Association of Geoscientists and Engineers, EAGE

Y2 - 12 June 2017 through 15 June 2017

ER -