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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418591
... exploration geophysicist 10 nmo velocity ellipse equation anisotropy parameter coefficient ellipse fracture upstream oil & gas horizontal symmetry plane seg international exposition grechka On parameterization in monoclinic medium with a horizontal symmetry plane Alexey Stovas*, NTNU...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3399804
... hydraulic fracturing wavelength microseismic imaging ramya ravindranathan imaging expanded abstract exploration geophysicist 10 reservoir characterization resolution reservoir imaging envelope derivative upstream oil & gas grechka permian basin vladimir grechka borehole seismic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3399830
... anisotropic media upstream oil & gas kinematic double couple geophysics dip slip hydraulic fracturing mechanism focal mechanism grechka clvd focal region anisotropy DC or not DC? Vladimir Grechka (Borehole Seismic) Summary duced by hydraulic fracturing are real or the result of erroneous...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216698
... Start Time: 8:30 AM Presentation Time: 8:55 AM Location: 221C Presentation Type: Oral media reflector inversion traveltime symmetry plane ellipse geophysics orthorhombic model coincide reservoir characterization grechka plane tsvankin nmo ellipse seg international exposition dip...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215209
... improvement is expected from joint inversion of the P and S data. Presentation Date: Wednesday, September 18, 2019 Session Start Time: 8:30 AM Presentation Time: 11:25 AM Location: 221C Presentation Type: Oral waveform inversion grechka elastic waveform inversion reservoir characterization...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995627
... international meeting azimuth belayouni woodford upstream oil & gas annual meeting grechka reservoir unconventional reservoir vladimir grechka Barnes , A. E. , 2016 , Handbook of poststack seismic attributes : SEG , Geophysical REFERENCES series , no. 21 . Belayouni , N...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2990944
...: Wednesday, October 17, 2018 Start Time: 1:50:00 PM Location: 205A (Anaheim Convention Center) Presentation Type: Oral grechka waveform inversion hydraulic fracture michel microseismic data middle layer reservoir characterization jarillo michel algorithm vti media oscar jarillo michel...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17795790
... coefficient azimuthally geophysics upstream oil & gas stova grechka slowness series coefficient seg seg international exposition traveltime parameter media Alkhalifah , T. , 1997 , Seismic data processing in vertically inhomogeneous TI media : Geophysics , 62 , 662 – 675...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-16890504
... Presentation Type: ORAL seismic source fracture vavrycuk microseismic data geophysics tensor inversion tensor mti reservoir characterization focal mechanism geometry mechanism grechka seg seg international exposition tensile microseismic event vladimir grechka plane microseismic event...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-16890707
... unambiguously places the recorded events in the Wood-ford formation, something that cannot be achieved with the direct arrivals alone. Presentation Date: Tuesday, September 26, 2017 Start Time: 8:55 AM Location: 381A Presentation Type: ORAL microseismic data grechka hypocenter microseismic event...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-16927109
..., singularity-unrelated cusps of the elementary wavefront ( = 16). Presentation Date: Tuesday, September 26, 2017 Start Time: 10:10 AM Location: 360D Presentation Type: ORAL body wave upstream oil & gas parabolic line reservoir characterization cusp equation 21 grechka musgrave slowness...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17647694
... tsvankin geophysics anisotropic media assumption interface reservoir characterization lateral heterogeneity grechka blia approximation seg seg international exposition fomel slowness heterogeneity traveltime derivative upstream oil & gas media Blias , E. , 1981...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17663573
... exposition reservoir characterization grechka estimation sweet spot weakness alkhalifah vertical fracture tsvankin Estimation of fracture parameters using elastic full-waveform inversion Zhen-dong Zhang , Tariq Alkhalifah , Ilya Tsvankin and Ju-won Oh King Abdullah University of Science...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13875028
... vsp data estimation geophysics grechka reservoir characterization artificial intelligence waveform inversion inversion vertical seismic profile joint slowness-polarization method mallick azimuthal anisotropy multicomponent vsp data upstream oil & gas multicomponent vertical...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13236710
... Date: Monday, October 17, 2016 Start Time: 3:45:00 PM Location: 144/145 Presentation Type: ORAL velocity model multiple master vladimir grechka slave waldhauser traveltime seg seg international exposition reservoir characterization perforation shot geophysics relative location...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13819319
... type and strength of anisotropy, the variation of the NMO velocity with azimuth is almost always elliptic (Grechka and Tsvankin, 1998). In orthorhombic medium with the symmetry planes aligned with the acquisition coordinate system, the P-wave NMO ellipse is controlled by five param- eters (Grechka...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13954271
... splitting parameter velocity model upstream oil & gas arrival time joint inversion reservoir characterization inversion grechka s-wave splitting measurement event location artificial intelligence splitting measurement Grechka , V. , and A. A. Duchkov , 2011 , Narrow...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13516639
... algorithm gradient inversion derivative geometry objective function source parameter seg seg international exposition receiver velocity model wti modeling reservoir characterization upstream oil & gas seismogram event location grechka Got , J.-L. , J. Frechet...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5750205
... (e.g., Thurber, 1986; Iyer and Hirahara, 1993; Thurber and Rabinowitz, 2000; Zhang et al., 2009; Grechka and Yaskevich, 2014; Li et al., 2014); and, third, the influence of velocities on the hypocenters of events within a selected cluster might be reduced by relying on the previously located events...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5750144
... geometry mti upstream oil & gas symmetry geophysics microseismic data aperture inversion grechka slowness slowness vector tensor inverse problem plane yaskevich reservoir characterization microseismic event anisotropy vector ray Moment tensor inversion of single-well microseismic...

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