TTI Wave Equation Migration by Phase-Shift Plus Interpolation

Richard A. Bale

Search and Discovery.com

...   (1) where VP0 is the velocity parallel to the symmetry axis (vertical for VTI), K Thomsen (1986) parameters H and G, and Vnmo V P 0 1  2G...

Prestack Seismic Data Inversion for Shale Gas Reservoir Characterization in China

Gang Yu, Yusheng Zhang, Ximing Wang, Xing Liang, Uwe Strecker, Maggie Smith

Unconventional Resources Technology Conference (URTEC)

... for Thomsen parameters and elastic moduli (Thomsen, 1986). Instead an isotropic inversion of full azimuth angle stacks was performed, the higher fold...

Prestack Seismic Data Inversion for Shale Gas Reservoir Characterization in China; #41829 (2016)

Gang Yu, Yusheng Zhang, Uwe Strecker, Maggie Smith

Search and Discovery.com

... judged insufficiently stable to proceed to inversion for Thomsen parameters and elastic moduli (Thomsen, 1986). Instead an isotropic inversion of full...

EXTENDED ABSTRACT: From Isotropic to Tilted Transverse Isotropic Pre-Stack Depth Migration

Nicolas Chazalnoel

GCAGS Transactions

... to minimize exploration risk. Method Thanks to the advance of wide azimuth acquisition (WAZ), we now are able to derive anisotropic parameters from...

Abstract: Azimuthal Fourier Coefficient Elastic Inversion; #90174 (2014)

Benjamin Roure and Jon Downton

Search and Discovery.com

... attributes such as the anisotropic gradient and the fracture parameters of the azimuthal elastic inversion. First the azimuthal elastic inversion...

Modelling pure qP-wave in attenuative VTI media using fractional viscoacoustic wave equation

Shanshan Zhang, Kun Tian, Ning Qin, Yanguang Wang, Changbo Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... is sometimes significantly stronger than that of velocity anisotropy. Zhu & Tsvankin (2006) introduced Thomsen parameters into the direction-dependent...

Abstract: SS-wave Reflections from P-wave Sources in Azimuthally Anisotropic Media; #90187 (2014)

James Gaiser and Richard Verm

Search and Discovery.com

... verse components and ly, and density is gr/cm . The ,  and  are Thomsen (1986) parameters. analyze azimuth stacks to Layer Depth VP0 VS0     find...

A depth uncertainty estimation method using interval-domain anisotropic VTI velocity and travel time detectability criterion

Andrey H. Shabelansky, Cory J. Hoelting, Min Yang, Sizhuang Deng, Jinsong Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

... and η into interval time domain. Figure 3: Input VTI anisotropic velocity (triplet of the reference parameters V, η, δ) extracted along 2D section...

Orthorhombic Imaging for Orthogonal Wide Azimuth Surveys in Mississippi Canyon, Gulf of Mexico; #30391 (2014)

Yang He, Adam Gersztenkorn, Sherry Yang, Bin Wang

Search and Discovery.com

... for azimuth-dependent anisotropic parameters. By resolving the inconsistencies in residual moveout for different azimuths, it is demonstrated that ORT...

Jointly data and model driven pre-stack inversion of elastic and anisotropy parameters in HTI media

Xin Zhang, Jianhua Geng

International Meeting for Applied Geoscience and Energy (IMAGE)

... inversion of anisotropy parameters relies on an approximation formula for reflection and transmission coefficients in anisotropic media. However...

Poroviscoelasticity of The Eagleford Shale Depending on the Drilling Mud and Fracturing Fluid Chemistry

Search and Discovery.com

Studying the feasibility of phase slowness inversion of seismic anisotropic parameters using VSP DAS data

Yu Chen, Takashi Mizuno, Manish Lal Kaitan, Xinyuan Li

International Meeting for Applied Geoscience and Energy (IMAGE)

...Studying the feasibility of phase slowness inversion of seismic anisotropic parameters using VSP DAS data Yu Chen, Takashi Mizuno, Manish Lal Kaitan...

Estimating Seismic Anisotropy Parameters from Rock Properties in Wolfcamp Shales, Midland Basin

Jaewook Lee, David Lumley

Unconventional Resources Technology Conference (URTEC)

... stiffness coefficient values (Figure 8). As a result, we can successfully estimate the anisotropic parameters (elastic stiffness coefficients and Thomsen...

Uncertainty quantification of anisotropic elastic constants and mud speed using borehole sonic data

Ting Lei, Kristoffer Walker, Adam Donald, Alexei Bolshakov, Lin Liang, Romain Prioul, Edgar Ignacio Velez Arteaga

International Meeting for Applied Geoscience and Energy (IMAGE)

...) parameters. However, the inversion process is ill-conditioned, leading to trade-off between Thomsen parameters (𝛾, 𝜀, 𝛿) and input uncertainties...

A stochastic modeling method of seismic velocity and anisotropy parameters in VTI medium using travel time detectability criterion

Andrey H. Shabelansky, Huafeng Liu, Cory J. Hoelting, Min Yang, Jinsong Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

..., t) + ∆δj (x, y, t) ∙ ςj (1b) Stochastic modeling of the anisotropic velocity (i.e., vertical velocity V, anellipticity parameter η and Thomsen δ...

Abstract: Interpretation of Natural Fractures from the Traveltime Variation with Source-receiver Azimuth in the Alberta Foothills; #90172 (2014)

Draga A. Talinga, Don C. Lawton

Search and Discovery.com

... can be realized when some of the most critical parameters (matrix velocity and symmetry axis direction) are unknown. The orientations predicted...

PSDM for Unconventional Reservoirs? A Niobrara Shale Case Study; #80392 (2014)

Morgan P. Brown

Search and Discovery.com

... From AVAZ Slope ~5% N FMI E ~50% What causes AVAZ? • Change in azimuthal anisotropy (Thomsen) parameters across an interface • P-waves: d, e...

Prestack Depth Migration for "Easy" Unconventional Plays?, #41056 (2012)

Morgan Brown

Search and Discovery.com

... significant misties Shale Layer • Measure misties at well tops • Build Thomsen d for anisotropic PSDM... • …or warp image to fit tops • Note: Dip...

Finite-frequency transmission traveltime tomography in VTI media

Fei Luo, Lanlan Yan, Jiexiong Cai

International Meeting for Applied Geoscience and Energy (IMAGE)

... of anisotropic parameters. As shown in Figure 1, the background model in VTI media is set to v p 0  3.0,   0.2,   0.1 and excited by 15Hz Ricker...

Prospect De-Risking Through a Fully Integrated Approach from Seismic Processing to Geology Interpretation

Francois Baillard, Rajat Rathore, Zhengmin Zhang, David Gold, Safrin Arbi, Mat Hardenberg

Indonesian Petroleum Association

... is a succession of tilted reflection planes defined by four parameters (V0, θ, δ, ε), V0 for the vertical velocity, δ and ε for the Thomsen’s anisotropic...

Seismic Anisotropy VTI Modeling and Mechanical Properties of Kerogen in Gas Shale, #42486 (2020).

Anggoro S. Dradjat, Agus Djamil, M. Firwan Aprizal

Search and Discovery.com

... than zero. Second parameters for measuring mechanical anisotropy is gamma or S wave velocity Thomsen parameter which is measuring difference...

Abstract: AVAZ Inversion for Anisotropy Parameters of a Fractured Medium; #90174 (2014)

Faranak Mahmoudian, Gary F. Margrave, and Joe Wong

Search and Discovery.com

... and the direction normal to it is referred as the symmetry axis of the system. Three Thomsen-style anisotropy parameters (ε, δ, γ) in addition...

Ultrasonic measurements of elastic anisotropy of granitic rocks for enhanced geothermal reservoirs

Mayra D. L. Carrasquilla, Jake Parsons, Teng Long, Min Sun, Yingcai Zheng, De-Hua Han

International Meeting for Applied Geoscience and Energy (IMAGE)

... direction. In Thomsen’s work in 1986, a group of parameters (𝜖, 𝛾, and 𝛿) were introduced, and the weak anisotropy approximation for phase velocities...

3-D Geomechanical Modeling for Field Development of a Colombian Shale Play

Leonardo Arias Medina, Azra N. Tutuncu

Unconventional Resources Technology Conference (URTEC)

... and 5), and Thomsen’s parameters, Mpsi (track 6). The static geomechanical properties are calculated using the dynamic elastic properties, shale...

Fracture Detection by Azimuthal Differential Residual Moveout

Juefu Wang

Search and Discovery.com

..., and then compute the difference. These differential time-variant trim statics are used to extract fracture orientation and Thomsen’s delta parameter. We explore...