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The AAPG/Datapages Combined Publications Database
Showing 20,631 Results. Searched 200,691 documents.
Forward Modeling of Seismic Data: Part 7. Geophysical Methods
George Mellman, Paul A. Kunzinger
AAPG Special Volumes
..., again with approximations, but with significant time savings. There are two classes of seismic modeling: ray tracing and wave equation methods...
1992
Abstract: Accurate Conversion Of Seismic Horizon Time Values To Depth Requires Validation, by K. L. Plate and R. C. Bartman; #90928 (1999).
Search and Discovery.com
1999
Brittleness and Geomechanical Properties Estimation Using Wireline and Seismic Data in the Duvernay Shale Basin, Canada
Carmen C. Dumitrescu
Unconventional Resources Technology Conference (URTEC)
... (equation 2). The linear relation between stress and strain is known as Hooke’s law. 𝐸= 𝜎𝑧 𝜀𝑧 = ∆𝐹/𝐴 ∆𝐿/𝐿 (2) In equation 2, ΔF...
2021
Imaging of multiwell and multifiber walkaway DAS-VSP datasets in a CCUS demonstration project onshore Japan
Yuji Yamada, Shotaro Nakayama, Takuji Mouri, Manish Lal Khaitan, Philip Armstrong, Olga Podgornova
International Meeting for Applied Geoscience and Energy (IMAGE)
... the fiber length with a sparse linear Radon transform. This step transformed the measured fiber strain to velocity (assuming short gauge length compared...
2024
Angle Gathers for Gaussian Beam Depth Migration, #41593 (2015).
Samuel Gray
Search and Discovery.com
... ([email protected]) Abstract Migrated common-image-gathers (CIG’s) are of central importance to prestack depth migration. They allow seismic velocity estimation...
2015
Brittleness modeling selects optimum stimulation zone in shaly source rocks in the Whangai Formation, New Zealand
Claudio Rabe, Raul Correa Rechden Filho, Jesus Pastor Salazar, Fernando Della Pasqua, Giovanni Chaves Stael, and Luiz Antonio Pierantoni Gamboa
AAPG Bulletin
...’s ratio (equation 12) and Edyn (equation 13) developed for homogeneous isotropic linear elastic materials (Zoback, 2007).The Edyn (MPa) can...
2021
Abstract: Full Waveform Inversion of Borehole Data in the Presence of High-Velocity Screens; #91204 (2023)
Ali Aldawood, Andrey Bakulin, Fuqiang Chen
Search and Discovery.com
... preventing seismic energy from travelling to a deeper depth. We also add three low-velocity anomalies to introduce horizontal heterogeneity. 317 shot gathers...
2023
2001
Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5
John H. Doveton
AAPG Special Volumes
... describes a straight line and is given by the linear equation: [EQUATION] where x is the trend value of the log at depth d, and a0 and a1...
1994
Anisotropic Pre-Stack Depth Migration in the Cusiana and Cupiagua Sur Fields
J. Checa, M. Mesa, N. Burke, J. Calderon, H. Alfonso, U. Egozi, B. Ver West, M. Yates
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
...). In this process, non flatness of the CIGs is associated with velocity errors along the travel paths of the corresponding Common Reflection Point (CRP) ray...
2006
Chapter 10: Rock Physics Relationships between Elastic and Reservoir Properties in the Haynesville Shale
Kyle T. Spikes, Meijuan Jiang
AAPG Special Volumes
... shown are the gamma ray (GR), P-wave (Vp) and S-wave (Vs) velocity, density porosity (φDen), and bulk density (ρb). Depth on the vertical axis...
2013
Abstract: Comparative Study on 2D Microseismic Source Location with Synthetic Seismograms Recorded by Borehole- and Surfacereceiver Arrays; #90224 (2015)
Anton Biryukov, Simon G.E. Harvey, and Giovanni Grasselli
Search and Discovery.com
... in [8]. A velocity gradient ranging from 3500 m/s at surface to approximately 4700 m/s at depth has been applied to the succession of limestone units...
2015
Kriging-based surrogate models for convergence acceleration of Markov chains: An example of magnetotellurics-dix joint inversion
Alejandro Quiaro, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... a reduced model space, where the velocity-resistivity covariance is depth-dependent. The model fields reconstructed with kriging are generally smooth...
2024
Simultaneous Inversion for Microseismic Event Location and Velocity Model in Vaca Muerta Formation
Zhishuai Zhang, Jing Du, Fuchun Gao
Unconventional Resources Technology Conference (URTEC)
... predicted using these predetermined velocity models. The forward modeling was conducted by solving the Eikonal equation for the first arrivals, which...
2017
From Drilling Hazard to Economical Reserves: the Evolution of Formation Evaluation in a Shallow Gas Reservoir
Anang Karana, Andy Kristianto, Gilang Ariestya, Fabrice Cochet
Indonesian Petroleum Association
... the GR by picking shale and sand values and using a linear relationship. The effective porosity is computed from subsea vertical depth and shaliness...
2014
Elastic Mechanical Properties from SEM Imaging in Tight Formations
Joel Walls, Jack Dvorkin, Gabriela Davalos
Unconventional Resources Technology Conference (URTEC)
.... These properties can be determined from sonic well logs, but the required logs (compressional and shear velocity) are not always available...
2019
SYNTHETIC SEISMOGRAMS
Search and Discovery.com
N/A
4-D Seismic: A Powerful New Technology for Monitoring Steam Movements in Duri Field-Central Sumatra
S. D. Jenkins, M. F. Bee, J. H. Lyle, E. Murhantoro
Indonesian Petroleum Association
... shot-geophone offsets in the 4-D data relative to the size and depth of the steam chest, a ray based velocity analysis is required to account for non...
1994
The Commercial Application and Interpretation of the Borehole Gravimeter
James W. Bradley
Pacific Section of AAPG
... of this slab is called the Bouguer Gravity and it’s equation is Gb - = 0.01276 σt, σ being the density, and t being the thickness of the lithology...
1976
TTI Wave-equation Migration of A 3-D Canadian Foothills Dataset
Search and Discovery.com
...TTI Wave-equation Migration of A 3-D Canadian Foothills Dataset TTI Wave-equation Migration of A 3-D Canadian Foothills Dataset Richard Bale...
2013
Abstract: Statics Preserving Sparse Radon Transform; #90224 (2015)
Nasser Kazemi
Search and Discovery.com
... aperture of the data, missing traces, aliasing, finite number of scanned ray parameter, noise and statics are the major sources of artifacts. This fact...
2015
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
..., as opposed to polar anisotropy (VTI/TTI) accounted for in traveltime ray tracing of prestack depth migration, can cause shear waves to split into fast (S1...
Unknown
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
..., as opposed to polar anisotropy (VTI/TTI) accounted for in traveltime ray tracing of prestack depth migration, can cause shear waves to split into fast (S1...
Unknown
Abstract: Application of Acoustic Waveform Tomography to Marine Seismic Reflection Data Contaminated with Strong Guided Waves; #90187 (2014)
Rajesh Vayavur and Andrew. J. Calvert
Search and Discovery.com
... arrivals. The source estimate needed for the first inversion was derived from the initial velocity model derived by ray based tomography and an spike...
2014
Physical Processes in the Ocean: Part 2: Relation of Oceanography to Sedimentation: PART 2
R. H. Fleming, Roger Revelle
AAPG Special Volumes
.... SVERDRUP, H. U., and FLEMING, R. H., unpublished material. 104. SWAINSON, O. W., "Velocity and Ray Paths of Sound Waves in Sea Water," Field Engineers...
1939