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The AAPG/Datapages Combined Publications Database
Showing 1,097 Results. Searched 200,357 documents.
Wide-Angle Seismic-Reflection and -Refraction Data from the Solomon Islands
A. K. Cooper, R. A. Wood
Circum Pacific Council Publications
.../s are seen as distinct linear segments, separated by sharp breaks in slope, that indicate dis tinct subsurface velocity boundaries. At higher velo...
1986
Basic Seismic Processing: Part 7. Geophysical Methods
Peter M. Duncan
AAPG Special Volumes
... related to shot and receiver positions on the surface of the earth, an elapsed time after the shot that originated the reflection or echo (traveltime...
1992
Key Technologies for Processing of Seismic Data in Gas Cloud Area, Bohai Bay Basin, #42093 (2017).
Xia Tongxing, Ming Jun, Liu Lei, Zhou Xuefeng, Liu Hongxing, Liu Xuetong
Search and Discovery.com
... attenuated traveltime tomography. Then, model-driven Q compensation is realized directly during depth migration. Conventional reflection tomography...
2017
Geologic Framework of Lower Cook Inlet, Alaska
Michael A. Fisher, Leslie B. Magoon
AAPG Bulletin
... interpretation or correlation but can be used for approximate conversion of seismic traveltime to depth. Interval-velocity curves were computed at 21...
1978
2D Survey Earth Model Building and Depth Imaging Using 3D Grid-Based Tomography Technology
Eric Pearson, Suyang Chen
Indonesian Petroleum Association
... anisotropy model without well constraints using the final 3D velocity model for 2D anisotropic depth migration. This case study will describe...
2012
FWI derived reflectivity gathers in angle domain
Hu Jin, Simon Luo, Qingqing Liao, Xukai Shen, Ganyuan Xia, Madhav Vyas
International Meeting for Applied Geoscience and Energy (IMAGE)
... sparse angle gathers to generate angle-dependent FWI gradients and uses a single step length to obtain angle-dependent velocity model updates from those...
2024
Elastic FWI for large impedance contrasts
Zedong Wu, Zhiyuan Wei, Zhigang Zhang, Jiawei Mei, Rongxin Huang, Ping Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... contrasts such as salt, despite its presently taken acoustic assumption. This has resulted in a leap in salt velocity model building over...
2022
Joint inversion of magnetotelluric and seismic travel time data with intelligent interpretation of geophysical models
Hongyu Zhou, Rui Guo, Maokun Li, Fan Yang, Shengheng Xu, Zuzhi Hu, Deqiang Tao
International Meeting for Applied Geoscience and Energy (IMAGE)
..., 1200-1600m and 1600-2000m, respectively. The resistivity and velocity of layers increase with depth. One or two anomalies are known to be located...
2022
Delineation of Jonah field Using Seismic and Sonic Velocity Interpretations
Ronald C. Surdam, John Robinson, Zun Sheng Jiao, Nicholas K. Boyd III
Rocky Mountain Association of Geologists
... a significant velocity-inversion surface in the Jonah area. For example, in Figure 10 it is apparent that, after removing the regional velocity/depth gradient...
2001
Abstract: Application of 2D Crosscorrelation and Radon Transform for Analysis of Double Couple Microseismic Source; #90187 (2014)
Neda Boroumand and Hassan Khaniani
Search and Discovery.com
..., t is the two-way traveltime, z is the depth to the apex of the hyperbola and p is defined as 1 v x and is the lag time to be solved. Numerical...
2014
ABSTRACT: 2D/3D Modeling of the Pacific Lower Mantle Using S, SKS and SKKS Traveltimes and Amplitudes; #90113 (2010)
Yang Zhang and Jeroen Ritsema
Search and Discovery.com
... of the traveltime differences is detected between SKKS and SKS and between S and SKS. Combined, these observations suggest that S, SKS, and SKKS interact...
2009
Hierarchical elastic velocities reconstruction with Eikonal-equation-based characteristic reflection traveltime tomography
Jianhua Wang, Jianming Zhang, Liangguo Dong, Yandong Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... converted waves. Raytracing is also necessary during iterative inversions to minimize the traveltime residuals and update the elastic velocity models...
2024
Application of Zero Offset 2D CRS-Stack Method for Low Fold Data: Synthetic and Real Data Examples
R. Sule, A. Hendriyana, P. D. Anggraini, Fatkhan, Alfian, Sardjito, Waluyo, Adriansyah
Indonesian Petroleum Association
... velocity model in depth domain. data. This is optimization problem, and one possible approach to determine those attributes is test all attributes...
2009
Application of Traveltime Tomography and Kirchhoff Migration Methods to Improve the Seismic Cross-Section Resolution on 2D Land Seismic Data
Harmita Lestari, Nur Ayu Anas, Muh. Resky Ariansyah, Sabrianto Aswad, Heri Winarto
Indonesian Petroleum Association
.... At this stage the module used is VELMOD which functions to obtain a velocity interval model for migration in the domain depth. In subsurface modelling...
2019
Hybrid Domain Parallel Algorithm for 3D Kirchhoff Prestack Depth Migration; #10928 (2017)
Changhai Zhao, Jianlei Zhang, Guoan Luo, Quanshun Cui, Chengxiang Wang
Search and Discovery.com
... of traveltime tables for prestack depth migration: presented at the SEG Technical Program, Expanded Abstracts. Alkhalifah, T., 2006, The many benefits...
2017
Multiple Suppression by the CRS Technique
Search and Discovery.com
N/A
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
Joint Anisotropic Parameter Inversion Based on Nonhyperbolic Moveout and Azimuthal Amplitude Variance
Fangyu Li, Jie Qi, Bin Lyu, Kurt J. Marfurt
Unconventional Resources Technology Conference (URTEC)
... analysis focuses on azimuthal changes on either velocity or amplitude. It is obvious that in the field application both HTI and VTI exist...
2016
Estimation of Formation Pressures from Log-Derived Shale Properties(*)
C. E. Hottman , R. K. Johnson
GCAGS Transactions
...-pressured formations. On a plot of transitime versus depth, a linear relationship is generally observed, whereas on a plot of resistivity versus depth...
1965
Least-squares RTM with shifted total variation regularization for depth imaging of sparse short-offset seismic data
Toktam Zand, Andrzej Gorszczyk, Ali Gholami, Hasan Ghasemzadeh, Alison Malcolm
International Meeting for Applied Geoscience and Energy (IMAGE)
..., in order to account for multiples as signal rather than noise, we recursively update the migration velocity model in the frame of a non-linear migration...
2022
Main Geological Results Using Common-Depth-Point Seismic Surveying in Bashkiria and Prospects for Exploration for New Oil and Gas Fields
Yu. N. Kukharenko, F. I. Khat’yanov, N. K. Yunusov
Petroleum Geology: A Digest of Russian Literature
.... a-Traveltime section of the common-depth-point survey: 1-position of graben-like downwarp; b–geological-geophysical section: 1-oil pool, 2-carbonates...
1977
Estimating Smectite Content from Seismic Data
Roman Beloborodov, Marina Pervukhina, Valeriya Shulakova, Dimitri Chagalov, Matthew Josh, Michael B. Clennell, Gavin Ward, Matthew Waugh, Juerg Hauser
Australian Petroleum Production & Exploration Association (APPEA) Journal
... at ~2.8 two-way traveltime in Fig. 3, where the smectite content decreases rapidly from 0.3 to 0.1. The depth of the transition corresponds...
2019
Fracture Estimation Using a P-Wave Azimuthal Attribute Analysis in the Cagüi Area: Abstract
Jorge Monsegny, Carlos Piedrahita
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... amplitude, AVO gradient, velocity and traveltime. Each one of them shows azimuthal dependent variation which is evidence of a fracture induced anisotropic...
2009
Crustal Structure in Gulf of Mexico from OBS Refraction and Multichannel Reflection Data
A. K. Ibrahim, J. Carye, G. Latham, R. T. Buffler
AAPG Bulletin
... was obtained indirectly to give the correct depth of the OBS. Linear segments of traveltime curves were interpreted from the record section and fitted...
1981
Elastic Wave Seismic Interpretation of Heavy-Oil Reservoirs
Search and Discovery.com
... processing have led to the more frequent use of VP/VS (P-wave velocity to S-wave velocity) ratios. Such analysis has enhanced our ability to characterize...
2013