Horizontal stress inversion based on azimuthal difference in P-wave reflectivity

Fubin Chen, Zhaoyun Zong, Xingyao Yin

International Meeting for Applied Geoscience and Energy (IMAGE)

... are developed based on the azimuthal difference in proposed P-wave reflectivity equation. Numerical results illustrate the feasibilities of three methods...

An Explanation of the Logarithmic Spiral Plan Shape of Headland-Bay Beaches

Paul H. Leblond

Journal of Sedimentary Research (SEPM)

... to a wave energy value through equation (8). Using a map of diffracted wave energy as a function of position for the chosen angle of incidence, the value...

Shear Velocity Prediction and its Rock Mechanic Implications, #41296 (2014)

Yexin Liu, Zhuoheng Chen, Kezhen Hu

Search and Discovery.com

... estimation. We propose a method for estimating the shear velocity from P-wave velocity, porosity, shale content and saturation. The response equation...

Abstract: AVO Depth Modelling (Paper 2)

Leong Lap Sau, Ng Tong San

Geological Society of Malaysia (GSM)

... conventionally derived data is one such approach. Given a eMP gather, the horizontal display of the variation of P-wave amplitudes provide a quick-look at any...

Effects of tool eccentricity on acoustic logging: Theory and field example

Bo Rao, Yuanda Su, Shengqing Li, Xiaoming Tang

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Furthermore, the proposed eccentric dipole logging significantly enhances the accuracy of measuring the ultra-slow formation S-wave velocity in a large fluid...

Gravel Ripples on the Inner Scotian Shelf

D. L. Forbes, R. Boyd

Journal of Sedimentary Research (SEPM)

..., computed from Equation 2, for appropriate values of incident wave period in the range 8 T 16 s, range from 0.6 to 2.0 m/s. Threshold velocities computed...

A Practical Review of Migration Issues and Solutions; #40723 (2011)

Ian F. Jones

Search and Discovery.com

..., both of which are numerical solutions to the wave equation. These two categories are the integral methods (including Kirchhoff and beam techniques...

Q-compensated least-squares reverse time migration by considering velocity and Q perturbations

Jinli Li, Yingming Qu, Chongpeng Huang, Zhenchun Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... equation. Finally, the correctness of the method in this thesis is demonstrated by two typical models. Theory In a viscoacoustic medium, seismic wave...

Simultaneous inversion of tight sandstone reservoir fluid and brittleness index based on frequency-dependent AVO

Tianjun Lan, Zhaoyun Zong

International Meeting for Applied Geoscience and Energy (IMAGE)

.... In order to reduce the reservoir prediction error and improve the calculation efficiency, the PP-wave reflection coefficient equation characterized...

Abstracts: Time-lapse Differential AVO: Reflection Coefficient at Fluid-fluid Boundary; #90173 (2015)

Jinfeng Ma

Search and Discovery.com

... the amplitude difference and map fluid variation in a reservoir. In terms of elasticity modulus of Zoeppritz equation approximation and based on fluid...

Abstract: Calculation of Amplitude and Velocity in General Anisotropic Media; #90224 (2015)

M. Malehmir and D. R. Schmitt

Search and Discovery.com

... propagation, lets start with general wave equation 1 and plane wave equation 2. 1 ∂ ρ ui = ci jkl ¨ 2 ∂xj ∂ uk ∂ ul + ∂ xl ∂ xk uk = A0 Pk e(−iK(n.r...

Application of Multi-Scale Fracture Detection from Borehole Microresistivity Image and Dipole Shear Wave Reflection Imaging in Shale Gas Horizontal Wells: A Case Study in Changning Gas Field

DE Heng, He Fa Yao, Ran Wen, Bin Lin, Qi Cheng Fan, Yan Hui Fu,

Unconventional Resources Technology Conference (URTEC)

... of the wave on the propagation path, e(−ωD/2Q ∗β), Where Qβ and β are the quality factor and wave velocity of shear wave. It can be seen from equation 1...

Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology

Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia

Indonesian Petroleum Association

... processing flows for both PP and PS waves were laid out to improve the structural and reservoir images. Particularly for PS converted wave data, apart from...

Modeling the Rollovers of Sandy Clinoforms from the Gravity Effect on Wave-Agitated Sand

Neil C. Mitchell

Journal of Sedimentary Research (SEPM)

... Equation 1 with exponentially declining K with depth (Mitchell and Huthnance 2007), simulating the effect of wave action on sediment supplied from...

Abstract: DMO and Migration: Imaging Tools in Geophysics

Craig J. Beasley

Geological Society of Malaysia (GSM)

... are numerical processes based on the wave equation that attempt to focus the seismic images in much the same way as a camera lens focuses light...

Study of Subtle Traps Using Horizontal Seismic Sections: ABSTRACT

Alistair R. Brown, C. G. Dahm, Robert J. Graebner

AAPG Bulletin

... of these features has been further studied using seismic logs, derived by wave equation inversion. Reservoirs thicker than 30 ft (9 m) have proved...

ABSTRACT: Petrophysical Attribute Evaluation and Anisotropic AVO Modeling in the Chad Basin, NE, Nigeria, by Adeagbo, Oloruntoba J.; Adepelumi, Adekunle A. ; #90142 (2012)

Search and Discovery.com

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

Faranak Mahmoudian, Gary F. Margrave, and Joe Wong

Search and Discovery.com

... inversion. This result makes it possible to compute the shear-wave splitting parameter, γ, (historically determined from shear-wave data) directly...

Abstract: Raypath-Consistent Shear Wave Statics; #90224 (2015)

Raul Cova, David Henley, and Kris Innanen

Search and Discovery.com

...Abstract: Raypath-Consistent Shear Wave Statics; #90224 (2015) Raul Cova, David Henley, and Kris Innanen Datapages/Search and Discovery Article...

Abstract: Use of a Petrophysical-Based Reservoir Zonation and Multicomponent (3-D, 3C) Seismic Attributes for Improved Geologic Modeling, by M. J. Pranter; #90925 (1999)

Search and Discovery.com

Observing Pore-Scale Gas Hydrate Morphology and its Acoustic Response to the Host Sediments

Search and Discovery.com

Wave-equation based inversion for carbonate reservoir characterization in Kuwait

Rao Narhari, Ahmad Al-Sabari, Afrah Al-Ajmi, Justin Ugbo, Jeremy Harris, Gerard Soto, Panos Doulgeris

International Meeting for Applied Geoscience and Energy (IMAGE)

...Wave-equation based inversion for carbonate reservoir characterization in Kuwait Rao Narhari, Ahmad Al-Sabari, Afrah Al-Ajmi, Justin Ugbo, Jeremy...

SONIC LOG APPLICATIONS - EASTERN VENEZUELA

W. F. Clarke

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

... the rock is subjected. Rock System - The theory of wave propagation through an heterogeneous elastic medium is a complex one which involves the elastic...

Abstract: Correlation of P-P and P-S Data in Yinggehai Basin, South China Sea; #90171 (2013)

Jinfeng Ma, Le Gao, and Igor Morozov

Search and Discovery.com

... and βj are its P- and S-wave velocities. Equation (1) can be further simplified by assuming constant density or replacing density by P-wave velocity...

RTM method of prismatic-waves under the undulating surface: A case study of the Longmen Piedmont

Bo Ma, Yingming Qu, Zhenchun Li, Jianggui Zhu, Chang Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... methods appear to solve these imaging problems. It is found that the curved grid reverse time migration technology based on the two-way wave equation can...