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The AAPG/Datapages Combined Publications Database

Showing 193 Results. Searched 200,293 documents.

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A fast sweeping method based on coordinate transformation for eikonal equation on unstructured triangular meshes

Xin Chen, Danping Cao, Xin Fu

International Meeting for Applied Geoscience and Energy (IMAGE)

... is from within the current triangle, i.e., the vertical line from node C to the wavefront should fall inside the triangle. As shown in Figure 2a, when...

2024

Abstract: Statics or Statistics?„The Near-Surface Revisited; #90211 (2015)

David Henley

Search and Discovery.com

... noises, which often mask reflections, this layer, through its irregular thickness and/or velocity structure also causes timing and phase differences...

2015

Broad bandwidths reveal double the expected sediment depth in the Northern Carnarvon Basin

Jo Firth, Mark Stanley

Petroleum Exploration Society of Australia (PESA)

... the depth that had been imaged previously, see figure 3. The clear imaging of these deep events was enhanced by sophisticated high-resolution velocity model...

2016

Abstract: Seismic Modelling and Monitoring of Carbon Storage in a Shallow Sandstone Formation; #90174 (2014)

Virginia C. Vera and Don C. Lawton

Search and Discovery.com

..., representing the post-injection scenario. The velocity and density values were obtained after applying Gassmann fluid substitution (Figure 2 (b...

2014

3D anisotropic seismic simulation for fracture prediction in Sichuans Wufeng shale gas reservoirs

Xiang Li, Ziduo Hu, Chunhui Xie, Yancan Tian, Wei Liu, Xinyu Fang, Gang Yao

International Meeting for Applied Geoscience and Energy (IMAGE)

... vertically through the source point and the depth slice of the target layer, showcasing P-wave velocity, density, and anisotropic parameters...

2024

Synergism in Formation Evaluation Enhances Detailed Reservoir Description: Reservoir Characterization: Petrophysical Formation Evaluation and Rock Description

Bob A. Hardage, Walter H. Fertl

AAPG Special Volumes

... development efforts where it is difficult to make accurate seismic depth maps due to structural complexity or to anomalous velocity behavior, it can...

1991

The Array Sonic .... A New Technique for Acoustic Measurements

A. James

Indonesian Petroleum Association

... 49, 3, 274-281. Liu, O.Y. 1987. A new method of fracture detection using borehole sonic velocity measurements. Proceedings of the Tenth European...

1989

A New Cement and Casing Evaluation Tool – The CET

M. H. Jennings

Indonesian Petroleum Association

... presentation. Furthermore by using an additional, ninth, transducer to measure the borehole fluid velocity it is possible to calibrate the first echo...

1984

Composite (VS/VP) Ratios in Transversely Isotropic Geology: Possible Aid for Identifying Organic Contamination in Porous Rocks

Alvin K. Benson

Environmental Geosciences (DEG)

... 188 198 Vol. 3 (1996) No. 4. Important mechanical properties of rocks and soils can be calculated from the shear-wave velocity, VS, the compressional...

1996

Basic Seismic Processing: Part 7. Geophysical Methods

Peter M. Duncan

AAPG Special Volumes

... width in space, which reduces spatial resolution. As the seismic wavefront travels outward from the source, it not only gets weaker (as a result...

1992

Abstract: The Benefits of S-waves and Multicomponent Data for Surface Monitoring; #90187 (2014)

en Dando, Kit Chambers, Raquel Velasco, and Stephen Wilson

Search and Discovery.com

... source-array geometry by propagating P and S wavefields through 3D P-wave and S-wave velocity models. To compute the synthetics we use a wavefront...

2014

Practical Application of Adaptive Least-Squares Reverse Time Migration (LSRTM) to Advance Field Development and Uncover New Reserves in the Subsalt Provinces

Chong Zeng, Shuqian Dong, Zhaohong Wu, Jean Ji, Darrell Armentrout, Bin Wang

GCAGS Transactions

... to the requirement of seismic velocity in conventional depth migration algorithms. In theory, LSRTM has to assume the velocity model is perfect otherwise...

2016

Abstract: Toward GPU Acceleration of the Reverse Time Migration Using Temporal Blocking; #91204 (2023)

Long Qu, Hatem Ltaief, Hussain Salim, Thierry Tonellot, David Keyes

Search and Discovery.com

...) for seismic depth imaging in challenging geological settings. Using seismic datasets captured at various source and receiver locations, it solves...

2023

Seismic Processing Applications on a Personal Computer

Geophysical Service (Malaysia) Sdn. Bhd.

Geological Society of Malaysia (GSM)

... the velocity vs depth relationship for both P-wave and S-wave energy. 60 GEOPHYSICAL SERVICE (M ) Figure 6: SnN. B HD. 2-panel display, upgoing...

1989

Abstract: Separation of Geometric Spreading, Scattering and Intrinsic Attenuation in VSP data; #90187 (2014)

Amin Baharvand Ahmadi and Igor Morozov

Search and Discovery.com

... (blue labels). Table 1: Resulting separated geometric-spreading, scattering and intrinsic-attenuation model* Depth to Velocity -1 -1 -1 Layer v...

2014

Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)

Robert J. Ferguson and Gary F. Margrave

Search and Discovery.com

... is acoustic velocity. Unit normal  (2) For numerical wave-propagation in the Fourier domain  k 1, k 2,   , where k 1 a n d k 2 are the  Fourier...

2013

Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)

Robert J. Ferguson and Gary F. Margrave

Search and Discovery.com

... is acoustic velocity. Unit normal  (2) For numerical wave-propagation in the Fourier domain  k 1, k 2,   , where k 1 a n d k 2 are the  Fourier...

2013

The effects of seismic anisotropy on mining seismology

Andrew King

Petroleum Exploration Society of Australia (PESA)

... falls. These uses of microseismics require that the seismic events be accurately located, which can only be done using an accurate velocity model...

2019

Using Multi-Focusing 3-D Diffraction Imaging to Predict Fracture Swarms in Unconventional Reservoirs

Marianne Rauch-Davies, Alex Berkovitch, Kostya Deev

Unconventional Resources Technology Conference (URTEC)

... paraxial wavefront: normal incident point wave and normal wave respectively; X  and X  are the source and receiver offsets for a given X 0 ; R+ and R...

2013

Chapter 3: Preparation of Seismic Data for Stratigraphic Work

Tom Wittick

North Texas Geological Society

... amplitude. The amplitude decays with time due to the spherical spreading of the wavefront. Figure 3-1. Amplitude of a Seismic Trace Notice...

1992

Preparation of Seismic Data For Stratigraphic Work

Abilene Geological Society

... decays with time due to the spherical spreading of the wavefront. Figure 1. Amplitude of a Seismic Trace Notice that there are two components...

1993

Persistent Microseismic Monitoring Using Robust Permanent SADAR Arrays

Kevin D. Hutchenson, Jason Jennings, Elige B. Grant, Derek Quigley, Jonathan Yelton, Paul A. Nyffenegger

Carbon Capture, Utilization and Storage (CCUS)

... at Carbon Management Canada’s Field Research Station (FRS) proving ground between 9m-19m depth to demonstrate passive and activesource seismic...

2025

Impact of an Integrated Seismic Data Processing Approach: A Case Study in Central Sumatra

Mars E. Semaan, Eddy Murhantoro, Maryanto, Achmad Bermawi, Budi Subianto, Hari Santoso

Indonesian Petroleum Association

... velocities and their relationships (Poisson's ratio). The resulting P-wave velocity can be used to perform time-to-depth conversion and to predict target...

1992

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