1-20 of 1422
Keywords: anisotropy
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Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3580599
...) approximation proposed for the homogeneous elastic ORT model for the computation in the numerical example. Three groups of examples are analyzed to investigate the influence in the accuracy of the approximation with the rotation angle, degree of anisotropy, and the direction of the orientation. The results...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581747
... of the pair distribution function upon the elastic stiffnesses and anisotropy of clay domains. Assuming a lower aspect ratio for the pair distribution function than for the clay platelets is found to reduce in-plane elastic stiffnesses C 11 , C 12 and C 66 , but to increase out-of-plane stiffnesses C...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581174
... A set of seismoelectric coupling equations have been developed in 3D porous medium that has electric isotropy and elastic anisotropy. We considered only the anisotropy of orthorhombic type with poroelastic parameters. We computed the seismoelectric response in orthorhombic medium by finite...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3595028
.... The application indicates that the azimuthal anisotropy of instantaneous frequency In this paper, we illustrate a case study of predicting the computed from offset vector title (OVT) seismic data can be azimuth of in-situ stress of a shale reservoir located within used to predict the azimuth of maximum in-situ...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583720
... to simulate P-waves propagating in an isotropic medium, VTI media with weak/strong anisotropy and a two-layer VTI model, the synthetic results validate the feasibility of this algorithm. vti media exploration geophysicist 10 isotropic medium propagator scalar qp-wave geophysics algorithm...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3587037
... The gas and oil-bearing fractured basement rocks in Bohai Bay, offshore China, form important and complicated hydrocarbon reservoirs. It has proved a challenging area for seismic imaging due to the presence of substantial velocity heterogeneity and strong azimuthal anisotropy in both...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582618
... coal measure csg reservoir bandanna coal fracture open fracture origin energy summary inversion jurassic walloon coal measure well logging complex reservoir coal exploration geophysicist 10 permeability seismic applications anisotropy The challenges and successes of seismic...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583321
... third order accuracy in smooth test cases, with quasi-linear computation time. We also validate our solver by comparing it with the solution to the elastic wave equation on a medium with general anisotropy. eikonal solver seismic wave exploration geophysicist 10 eikonal equation upstream oil...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583081
... Using hydraulic fracturing induced seismicity data, we explore the possibility of using anisotropy analysis to determine stress changes due to induced earthquake rupture on a fault. A dataset from the Fox Creek, Alberta area is used, where the largest observed magnitude was Mw 4.1. It is found...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584214
... crack orientation maximum dip angle exploration geophysicist 10 orientation compliance ratio bedding fracture upstream oil & gas stress sensitivity physics modeling alignment anisotropy source rock reservoir characterization tangential compliance ratio crack property...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584133
... be known initially. This geometric determination enabled the application of the Alford rotation to detect birefringence. Results are shown for the shear travel-time inversion of the direct shear wave arrival and preliminary results from the Alford rotation are discussed. The anisotropy values determined...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3590447
... imaging, by itself and jointly with first arrival analysis, it is being carried out assuming the subsurface is isotropic. There is a need to incorporate anisotropy in surface-wave inversion and to pursue joint estimation of VS and transversely isotropic parameters. In this study, we demonstrate multimode...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594396
... channelization has occurred. The scale of heterogeneity varies inversely with the number of channels present within a delta. Fluvial and tidal deltas exhibit low anisotropy, with the principal direction being perpendicular to the initial shoreline. In contrast, wave deltas exhibit higher anisotropy...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3398810
... important, analyze the continuity of the fracture far from well wall by analyzing anisotropy using sonic scanner tool. Presentation Date: Monday, October 12, 2020 Session Start Time: 1:50 PM Presentation Time: 3:05 PM Location: 360D Presentation Type: Oral reservoir characterization production...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3399830
... Moment tensors of kinematically double-couple microseismic events triggered in anisotropic formations are known to exhibit non-double-couple focal mechanisms. Their weak anisotropy approximation reveals the combinations of anisotropy coefficients of vertically transversely isotropic focal...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427205
... The Columbus Basin offshore Trinidad has been a challenging area for seismic imaging due to the presence of substantial velocity heterogeneity and strong azimuthal anisotropy resulting from abundant gas clouds and complex fault structures. A tilted orthorhombic (TOR) model is required to address...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428438
... Geological layering at all scales causes polar or VTI elastic anisotropy while vertical fractures and/or horizontal stress anisotropy add an azimuthal variation in properties. The addition of vertical fractures and/or horizontal stress anisotropy to a background VTI medium results in a medium...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427877
... Based on Monti Carlo simulation using laboratory measured rock physics data, we studied the effect of seismic anisotropy on the AVO gradient B and compared it with the gas saturation effect on AVO gradient. Our study shows that the former is usually much greater than the latter, and the seismic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427950
..., and requires the interpretation to account for the anisotropy to extract the maximum amount of information from the data. In this study, we examine the capability of magnetotelluric (MT) data to resolve the electrical conductivity tensor for each layer in a layered halfspace. We invert for a triaxially...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428075
... exploration geophysicist 10 inversion carbonate reservoir hadexun area seg international exposition equation fracture upstream oil & gas dispersion information fluid identification inversion method anisotropy Fluid identification and effective fractures prediction by combining AVOF, AVOZ...

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