Abstract: Model Parametrization Strategies for Newton-Based Acoustic Full Waveform Inversion; #90224 (2015)

Amsalu Y. Anagaw

Search and Discovery.com

... studies the effects of model parameterizations on velocity model building using full waveform inversion with Newton-based optimization method. Three...

Application of Wave Equation Tomography in Frontier Areas

Tien-when Lo, Guy W. Purnell

Indonesian Petroleum Association

... Fourier transform of the scattered wavefield at each frequency, calculating the object function O(r) at those frequencies. The velocity profile C(r...

SAMPLE--Seismic Amplitude Measurement for Primary Lithology Estimation: ABSTRACT

Gary S. Gassaway, H. J. Richgels

AAPG Bulletin

...-depth-point (CDP) gather. From a crossplot of pressure wave velocity and Poisson's ratio, lithologies and pore fluids are then estimated. The SAMPLE...

Abstract: Kirchhoff Imaging with Adaptive Greens Functions for Compensation for Dispersion, Attenuation, and Velocity Imprecision; #90187 (2014)

Andrew V. Barrett

Search and Discovery.com

... and Hormander) index. Here I instead define the Green’s function to be a short convolutional operator derived using a set of input pilot image traces...

Application of Full Waveform Inversion to Resolve an Eroded Shallow Carbonate Platform, North Madura, East Java, Indonesia

David Cavalin, Nurrul Ismail, Tom Paten, Kola Agbebi, Dave Lim

Indonesian Petroleum Association

... measured between the observed shots and shots modeled using a specific model set (velocity, anisotropy, density, Q) is called objective function...

Abstract: To TTI or not to TTI? Semi-Automated 3D Tomographic Velocity Analysis in the Canadian Foothills: A Case History; #90211 (2015)

Sylvestre Charles, David Mitchell, Rob Holt, Jiwu Lin, and John Mathewson

Search and Discovery.com

... were included in the initial velocity model for depth imaging. Figure 2. Weathering velocity model derived using the Tau-P tomography and up-hole...

Abstracts: Full Waveform Inversion with Total Variation Regularization; #90173 (2015)

Amsalu Y. Anagaw, Mauricio D. Sacchi

Search and Discovery.com

... the gradient of the objective function, which can be minimized using the adjoint-state method (Plessix, 2006). To solve the actual inversion process...

Abstract: Forward Modeling of Log Response in Geopressured Formations Reveals Valuable Insights to the Various Pore Pressure Prediction Techniques, by J. C. Rasmus; #90923 (1999)

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High-End Model Building Techniques for Revealing a Pre-Carbonate Reservoir Offshore East Natuna Basin, Indonesia

Jun Wang, Yonghe Guo, Yitao Chen, Muhammad Nauvall Juliansyah, Nick Crabtree

Indonesian Petroleum Association

... difficulties for conventional raybased reflection travel-time tomography. Figure 3 - Initial velocity and refraction energy penetration analysis (Depth...

Stratigraphic Velocity Interpretation: National Petroleum Reserve--Alaska: Chapter 12

E. W. Peikert

AAPG Special Volumes

... velocity as a function of depth and geologic time: Geophysics, v. 16, p. 192-206. Levin, F. K., 1978, The reflection, refraction, and diffraction of waves...

A New Approach to Time Depth Conversion and Depth Error Estimation for 2D Interpretation Using Seismic Velocities

Rosidah Hardiani, Sanisah Soed, Lothar Schulte

Indonesian Petroleum Association

... is more accurate than depth converting the interpolated time horizons. In addition the lower horizon was depth converted using the average velocity...

ABSTRACT: A Comparison of Depth Conversion Methods in the Gulf of Mexico, by Melvan D. Carter, Gary R. Hyatt; #90999 (1990).

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Velocity for Pore Pressure Prediction Modeling and Risk Assessment

Selim Simon Shaker

GCAGS Transactions

...). Red dashed trend represents the average FFP vs. depth. Predicting the pressure in this zone, using seismic velocity, is a challenging task...

Diving wave tomography: Velocity modelling using first arrival traveltime

Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu

Geological Society of Malaysia (GSM)

...Diving wave tomography: Velocity modelling using first arrival traveltime Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu Bulletin...

Comprehensive Study of Elasticity and Shear-Viscosity Effects on Proppant Transport Using HFVRs on High-TDS Produced Water

Mohammed Ba Geri, Ralph Flori, Huosameddin Sherif

Unconventional Resources Technology Conference (URTEC)

... of the effects of elasticity and shear viscosity on proppant settling velocity using HVFRs and linear gel in fresh water and produced water. Two cases were...

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

Yexin Liu, Zhuoheng Chen, Kezhen Hu

Search and Discovery.com

... velocity and density can be inverted using current advanced pre-stack seismic inversion technique from seismic AVO angle gathers (Russell et al. 2005). Like...

Combined Diving Wave Refraction Tomography and Reflection Tomography for PSDM Velocity Model Building (Bekapai Field, Indonesia)

Andi Kusuma, Florent Bertini, Jacques Bonnafe, Artem Sazykin, Swee Leng Ng

Indonesian Petroleum Association

... was available, we built our starting model using an average and scaled function derived from the picked interval velocity field (Figure 4). This single velocity...

Deep Dix: Enhancing interval velocity model estimation through adversarial regularization

Joseph Stitt, Robert Clapp, Biondo Biondi

International Meeting for Applied Geoscience and Energy (IMAGE)

... goals when using a standard roughening regularizer as 0 ≈ W[Cu − d] O(m) = ∥(Fm − d)∥2 + ϵΨΘ (m) 2 (1) where our objective function output O(m...

EXTENDED ABSTRACT: Applications of Wave Imaging Technologies to Improve Deep Gulf Prospecting

Morgan P. Brown, Joseph H. Higginbotham, Cosmin Macesanu, Oscar E. Ramirez

GCAGS Transactions

... depth migration (PSDM), limitations in computer resources meant that PSDM was reserved for the final run, with velocity analysis using time migration...

Application of Robust Noise Reduction on a Land 3D Seismic Data

Agus Abdullah, Jesse Shaw

Indonesian Petroleum Association

... estimates can then be obtained as s ˆ sp = o vn ˆ and v p = vn so = λr f . Once all shots are processed for the phase velocity estimates using...

The depth-domain seismic inversion based on depth-variant wavelet non-stationary convolution method

Cong Wang, Xuehua Chen, Wei Jiang, Shengyi Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... performed seismic wavelet extraction and seismic inversion in the depth domain using the traditional convolution model. However, the process of the velocity...

Mainstream Mantle Convection: A Geologic Analysis of Plate Motion

T. H. Nelson , P. G. Temple

AAPG Bulletin

... material balance when the convective component is added to the system. The assumption that the increase in mainstream velocity with depth is linear...

Abstract: Improving the Statics Solution through De-migration: A Canadian Foothills A-PSDM Case History; #90172 (2014)

Jiwu Lin, Sylvestre Charles, Josef Heim

Search and Discovery.com

... process. The error was only discovered in the middle of the depth imaging phase as the tomography velocity model building iterations were no longer...

Effective Use of Seismic and Well Velocities to Build a Regional Velocity Field for Depth Conversion

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Subsalt Velocity Trend and Its Spatial Variation in the Central Gulf of Mexico

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