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The AAPG/Datapages Combined Publications Database
Showing 1,097 Results. Searched 200,293 documents.
Beam Migration for Imaging of Complex Structures
Karl Schleicher, John Sherwood, Lynn Comeaux, Mazin Farouki
Indonesian Petroleum Association
... are then iterated until a satisfactory velocity model is developed for which the common reflection point depth gathers are adequately flat. The final...
2009
Regional exploration of crustal structures from long-offset OBN data by extended-source FWI
Gaoshan Guo, Stéphane Operto
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the predominant approach for determining large-scale crustal structures still relies on traveltime tomography (see Christeson et al. (2014) for a Gulf...
2024
Abstract: Cross-Validation of 3C and 9C Prestack Shear Wave Splitting Analysis at Big Sky; #90224 (2015)
Jeff P. Grossman and Gulia Popov
Search and Discovery.com
... features and spatial resolution. As expected from theory, the traveltime delays between fast and slow modes estimated from pure shear wave data are twice...
2015
Synthetic Seismic-Reflection Profiles of Rift-Related Structures
Martha O. Withjack , D. J. Drickman Pollock
AAPG Bulletin
... may disrupt and bend the reflections on the upthrown side. Depth, rock-velocity distribution, and fault displacement affect the severity...
1984
Chapter 14 (Case Histories of Three-Dimensional Seismic Surveys)—Case History 2: Three-Dimensional Seismic Monitoring of an Enhanced Oil Recovery Process
Robert J. Greaves, Terrance J. Fulp
AAPG Special Volumes
... in both density and velocity. Figure 14-2-9. Comparison of sonic traveltime logs (above) and density logs (below) from preburn well W306 and postburn...
2011
Abstract: P-wave AVAz Modeling: A Haynesville Case Study; #90224 (2015)
Jon Downton
Search and Discovery.com
... caused by fractures, using linear slip theory and available well log information. Modeling allows the interpreter to determine the magnitude...
2015
Use of Seismic Surveying for Study of the Subsurface Structure of Southeast Turkmenistan
D. M. Mil’shteyn
Petroleum Geology: A Digest of Russian Literature
...) velocity of propagation of elastic vibrations increases gradually with depth, reflecting a corresponding increase in formation velocities...
1960
Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method
Tianfei Zhu
Search and Discovery.com
.... It is, for example, a key element of the Kirchhoff migration algorithm which has been a major tool over the past decade for prestack depth imaging...
Unknown
Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method
Tianfei Zhu
Search and Discovery.com
.... It is, for example, a key element of the Kirchhoff migration algorithm which has been a major tool over the past decade for prestack depth imaging...
Unknown
Fault MLReal: A fault delineation study for the Decatur CO2 field data using neural network predicted passive seismic locations
Hanchen Wang, Yinpeng Chen, Tariq Alkhalifah, Youzuo Lin
International Meeting for Applied Geoscience and Energy (IMAGE)
... applications (Wu et al., 2020). However, traditional methods like traveltime and double-difference relocation, and waveform imaging, while improving...
2023
Abstract: Characterization of Heavy Oil Reservoir using Vp/Vs Ratio and Neural Network Analysis; #90171 (2013)
Carmen C. Dumitrescu and Larry Lines
Search and Discovery.com
... of the inverted volume. Depending on the seismic data and the number of wells available, a Vp/Vs ratio volume can be obtained from: (i) traveltime measurements...
2013
Abstract: Characterization of Heavy Oil Reservoir using Vp/Vs Ratio and Neural Network Analysis; #90171 (2013)
Carmen C. Dumitrescu and Larry Lines
Search and Discovery.com
... of the inverted volume. Depending on the seismic data and the number of wells available, a Vp/Vs ratio volume can be obtained from: (i) traveltime measurements...
2013
3-D AVO Analysis and Modeling Applied to Fracture Detection in Coalbed Methane Reservoirs
Antonio C.B. Ramos, T.L. Davis
Rocky Mountain Association of Geologists
... the 3-D volume confirms model predictions. Areas of large AVO intercepts indicate low velocity coals, possibly related to zones of stress relief. Areas...
1997
Generation and evolution of overpressure caused by hydrocarbon generation in the Jurassic source rocks of the central Junggar Basin, northwestern China
Xiaowen Guo, Sheng He, Keyu Liu, Zhi Yang, Shengqiang Yuan, and Mingliang Liu
AAPG Bulletin
.... The well-log responses of the overpressured mudstones and seismic velocity characteristics indicate that the top depth of the overpressure zone...
2019
Origin of overpressure and pore-pressure prediction in the Baram province, Brunei
Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Chris K. Morley, Abdul Razak Damit
AAPG Bulletin
...-vertical effective stress plots. Acoustic traveltime is inversely related to porosity. Hence, sonic velocity-vertical effective stress data can also...
2009
Automated velocity modeling with domain transformations
Kevin Gullikson, Arnab Dhara, Ram Tuvi, Mrinal K. Sen
International Meeting for Applied Geoscience and Energy (IMAGE)
... time to depth domain by integrating the predicted velocity model. This pipeline is capable of predicting a velocity model suitable for input to FWI...
2024
Using Reflected Phases to Improve Depth Resolution of Microseismic Source Locations from Single-Well Observations
James Rutledge, Nobukazu Soma
Unconventional Resources Technology Conference (URTEC)
... of trial depth positions, matched their arrivals to ray-trace arrivals from two distinct velocity boundaries while also honoring the direct P...
2013
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
Late Cretaceous-Cenozoic Development of Outer Continental Margin, Southwestern Nova Scotia
Stephen A. Swift
AAPG Bulletin
... (1975) found paleocanyons on the upper rise, within the diapir province, Table 1. Interval Velocity and Depth Versus Traveltime Functions End_Page...
1987
Automation of passive seismic processing via machine learning and physics-informed methods
Ivan Lim Chen Ning, Laura Swafford, Mike Craven, Kevin Davies, Evan Earnest, Dean Thornton
International Meeting for Applied Geoscience and Energy (IMAGE)
... location, we use 1D P and S wave velocity models adapted from Lomax and Savvaidis (2019). Figure 6 shows the traveltime residuals for P (top...
2022
Structural segmentation in the Qiongdongnan Basin, South China Sea: Insights from analogue models and implications for hydrocarbon exploration
Gengxiong Yang, Hongwei Yin, Jun Gan, Wei Wang, Jitian Zhu, Dong Jia, Xiaofeng Xiong, and Wenqiao Xu
AAPG Bulletin
... of deep preexisting faults. The influences of the initial crustal rheological structure and extensional velocity, which are closely related to depth...
2024
Upside down Rayleigh-Marchenko imaging: an application to the Volve ocean-bottom cable data
Ning Wang, Matteo Ravasi
International Meeting for Applied Geoscience and Energy (IMAGE)
...m, 6750 m, and 7500 m) for both mirror migration method (Figure 4a) and the UD-RM method (Figure 4b). Since the velocity is generally increasing over dept...
2024
Characteristics of Deep Bahama Channels in Relation to Hydrocarbon Potential: GEOLOGIC NOTES
Henry T. Mullins , George W. Lynts , A. Conrad Neumann , Mahlon M. Balls
AAPG Bulletin
... erosional unconformity. Seconds of two-way acoustic traveltime are marked on left; water depth in meters on right. Profile was obtained using 10-cu in. (164...
1978
Characterizing seismic anisotropy and AVO using walkaway VSP: Willow oilfield, Alaska
Manish Lal Khaitan, Ali Sayed, Shujaat Ali, Trey Wagner, Jonathan Scorer, Brett Wendt
International Meeting for Applied Geoscience and Energy (IMAGE)
...-depth relationship along the well, interval velocity profile, and a corridor stack. The interval velocity was used to calibrate the compressional sonic...
2022