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The AAPG/Datapages Combined Publications Database
Showing 20,859 Results. Searched 200,630 documents.
Measuring Electrical Resistivity Variations in a Sandstone Specimen Injected with Gas, Liquid, and Supercritical CO2
Kyosuke Onishi, Toshifumi Matsuoka, Yoshihiko Ishikawa, Ikuo Okamoto, Ziqiu Xue
AAPG Special Volumes
..., 2004, Seismic wave monitoring of CO2 migration in water-saturated porous sandstone: Exploration Geophysics, v. 35, p. 2532.Xue, Z., T. Ohsumi, and H...
2009
Abstract: AVO Crossplotting II: Examining Vp/Vs Behavior; #90171 (2013)
Heath Pelletier
Search and Discovery.com
... at very high P-wave velocities. Figure 1. AVO behavior in crossplot space. (a) Castagna and Swan’s (1997) background trend illustrates AVO crossplot...
2013
Abstract: Image Enhacement After Migration; #90174 (2014)
John C. Bancroft, Thais Guirigay, and Helen Isaac
Search and Discovery.com
... it applies to all “wave-equation” migrations. Consider the forward process of modelling with linear algebra as (1) Dr s , where D is a diffraction...
2014
A method to predict the resistivity index for tight sandstone reservoirs from nuclear magnetic resonance data
Liang Xiao, Yujiang Shi, Gaoren Li, Haopeng Guo, Junran Li
AAPG Bulletin
... be simply expressed using the Archie equation. This makes the saturation exponent difficult to determine and the water saturation estimation significantly...
2021
High Resolution Pore Pressure Prediction Using AVO Inversion
Yongyi Li
Search and Discovery.com
... in over pressured zones. Traditionally, the P-wave velocity obtained through stacking velocity analysis or reflection tomographic inversion is used...
Unknown
Seismic Imaging of Fractures A Feasibility Study
Larry Lines
Search and Discovery.com
..., L.R., 1997, Seismic modeling and imaging with the complete wave equation, SEG publication, Tulsa, Oklahoma. Lamb, M.A., and Spratt, D.A., 2005...
Unknown
High Resolution Pore Pressure Prediction Using AVO Inversion
Yongyi Li
Search and Discovery.com
... in over pressured zones. Traditionally, the P-wave velocity obtained through stacking velocity analysis or reflection tomographic inversion is used...
Unknown
Seismic Imaging of Fractures A Feasibility Study
Larry Lines
Search and Discovery.com
..., L.R., 1997, Seismic modeling and imaging with the complete wave equation, SEG publication, Tulsa, Oklahoma. Lamb, M.A., and Spratt, D.A., 2005...
Unknown
Abstract: Time-lapse Seismic Modeling of CO2 Sequestration at Quest CCS Project; #90187 (2014)
Shahin Moradi and Don C. Lawton
Search and Discovery.com
... the in-situ pore fluid is substituted by a new fluid, physical rock properties such as density and seismic wave velocities would change (Gassmann, 1951...
2014
Abstract: Modeling and Mapping SAGD Steam Chamber Evolution in a Heavy Oil Reservoir using 4D-3C Seismic; #90187 (2014)
Loren M. Zeigler, Kelsey Schiltz, and David Gray
Search and Discovery.com
...) and converted (PS) wave data. In an ideal homogenous reservoir, this steam chamber created by the SAGD process would form perfectly as an inverted...
2014
Abstracts: Q Determination, Corner Frequency and Spectral Characteristics of Microseismicity Induced by Hydraulic Fracturing; #90173 (2015)
David W. Eaton
Search and Discovery.com
.... For a given wave type (P or S) recorded on two downhole receivers, the ratio of spectral amplitudes is given by: A1 ( ) A2 ( ) e 2Q (t2 t1...
2015
PSDM for Unconventional Reservoirs? A Niobrara Shale Case Study; #80392 (2014)
Morgan P. Brown
Search and Discovery.com
... to justify anisotropic PSDM. Azimuthal velocity analysis using Wave Equation PSDM (WEM) azimuth angle gathers indicates a very weak level of overburden...
2014
3D Prestack Waveform Inversion - A Real Data Example from the Rock Springs Uplift, Wyoming, #70258 (2017).
Josiane Pafeng, Subhashis Mallick, Hema Sharma
Search and Discovery.com
... inversion (PWI) solve the full wave equation and have given high quality results. PWI is very computation-intensive and was thus rewritten in a multilevel...
2017
Novel 3-D Field-scale Characterization of Reservoir Fractures Using Surface Seismic Data by the Double-Beam Method and Field Applications
Yingcai Zheng, Hao Hu, Xinding Fang, Robert Stewart
Unconventional Resources Technology Conference (URTEC)
... would cause apparent seismic anisotropy and cause the amplitudes of reflected/transmitted P and S waves varying with the wave-propagating angle...
2018
Rock physics diagnostics and modeling for shale gas formation characterization in China
Gang Yu, Yusheng Zhang, Paola Newton, Ilgar Azizov
Unconventional Resources Technology Conference (URTEC)
... azimuth P-wave seismic data has been shown to be suitable for quantitative fracture characterization and determination of anisotropy. For the latter...
2014
Combining high resolution modelling and one-way wave field extrapolation migration to image beneath a complex overburden: A case study from Porcupine Basin, Ireland
Partha Pratim Mandal, Weidi Koh, Julien Bluteau, David Laws, Jennifer Greenhalgh
Petroleum Exploration Society of Australia (PESA)
... the wave equation. RTM uses the more accurate two-way wave extrapolation, which can handle multipathing, rapid velocity variations and dips exceeding 90...
2016
Leveraging self-supervised deep learning to address cross-talks in multi-parameter inversions
Wenlong Wang, Yulang Wu, Yanfei Wang, George A. McMechan
International Meeting for Applied Geoscience and Energy (IMAGE)
... inversion face challenges in accurately determining MPM due to complex inter-parameter crosstalks in the elastic wave equation. To solve this problem...
2024
Extended Abstract: Rock Compressive Strength: A Correlation from Formation Evaluation Data for the Niger Delta
Babatunde Salawu, Reza Sanaee, Olumayowa Onabanjo
Africa Energy and Technology Conference, 2016
... strength to physical properties of rocks that can be measured from formation evaluation data and derive an equation that can be used to derive rock...
2016
A Technique for Identifying Hydrocarbons Using “Old Electric Logs” and Contemporary Sonic Logs
Lee Sanders
West Texas Geological Society
... distribution on elastic wave velocities, The Log Analyst, v. 30, p. 437–445. Helander, H., 1983, Fundamentals of formation evaluation:Tulsa, OGCI Publications...
1995
Abstract: Inversion Approach to Calculate Instantaneous Frequency; #90174 (2014)
Jiajun Han and Mirko van der Baan
Search and Discovery.com
... equation (2), instantaneous frequency is the derivative of instantaneous phase; in other words, instantaneous phase is the time integral...
2014
Abstracts: General Anisotropic Travel Times A Purpose Built Solution; #90173 (2015)
R. Phillip Bording
Search and Discovery.com
... to travel times. Introduction The eikonal equation is a non-linear partial differential equation, which has many applications in geophysical modeling...
2015
Abstract: Deterministic Marine Deghosting: Tutorial and Recent Advances; #90224 (2015)
Mike J. Perz and Hassan Masoomzadeh
Search and Discovery.com
..., both of which address various complexities of wave propagation. Deterministic aspects Note that if r and td were known with certainty, equation (3...
2015
Isotropic AVO Methods to Detect Fracture-Prone Zones in Tight Gas Resource Plays, #41530 (2015).
Bill Goodway, John Varsek, Christian Abaco
Search and Discovery.com
... equation. The isotropic AVO modelling based on logs tied to 3D data indicate that shale zones have mostly type 1 AVO responses, i.e., high shear-wave...
2015
The Application of 2D Common-Offset Common-Reflection-Surface (CO CRS) Stack Method Towards Synthetic Data
Parapaty Halley, Rachmat Sule, Teuku Abdullah Sanny
Indonesian Petroleum Association
.... The synthetic data is produced from Finite Difference Modeling that solves the acoustic wave equation for an undulated subsurface model. THE CO CRS...
2009
Fractured Bedrock Hydrogeologic Characterization Using Digital Rock Physics, #42398 (2019).
Eric Goldfarb, Logan Shmidt, Ken Ikeda, Omar Alamoudi, Daniella Rempe, Nicola Tisato,
Search and Discovery.com
... difference method simulation to solve the wave equation at each node through the model of the fractured sample and computed wave-speeds. Fluid flow can...
2019