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The AAPG/Datapages Combined Publications Database

Showing 757 Results. Searched 200,357 documents.

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Characterizing Multiple Formations for Gas Production and CO2 Sequestration

Adriana Gordon, Bill Goodway, Evan Mutual, Raul Cova, Scott Leaney, Wendell Pardasie, Matt Ng

Unconventional Resources Technology Conference (URTEC)

... wavelet estimation: a frequency domain solution to a geophysical noisy input-output problem, IEEE Transactions on Geoscience and Remote Sensing 36...

2023

Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method

Tianfei Zhu

Search and Discovery.com

... Consider the wave equation in the frequency domain: ’2 <  Z2 V 2 (x ) < 0. (1) ART seeks an approximate solution to the wave equation in the form...

Unknown

Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method

Tianfei Zhu

Search and Discovery.com

... Consider the wave equation in the frequency domain: ’2 <  Z2 V 2 (x ) < 0. (1) ART seeks an approximate solution to the wave equation in the form...

Unknown

Ground Roll Polarization Filtering with Spatial Smoothness Constraints

Search and Discovery.com

... to this time-domain definition of the 3C data-vector one can also define it in the frequency domain using the spectra, or define it using the analytic...

2013

Abstract: Seismic Wave Attenuation due to Scattering and Leaky Mode Mechanisms in Heterogeneous Reservoirs; #90171 (2013)

Jun-Wei Huang, Gilles Bellefleur, and Bernd Milkereit

Search and Discovery.com

... mode, we put two horizontal receiver arrays inside the model. (b) Ormsby wavelet in the time and frequency domain with the parameters listed...

2013

Abstract: Efficency and Accuracy Enhancement for One-way Wave Equation Migration Through Improved Mapping Function in the Time-shift Imaging Condition; #90171 (2013)

Mark Ng

Search and Discovery.com

... interpolation (PSPI) is used. At depth z1 and lateral position x, the frequency domain expression of the cross-correlation for 2D (Kelly and Ren, 2003...

2013

Abstract: Mapping Lithological Heterogeneity in Athabasca Oil Sand Reservoirs Using Surface Seismic Data: Case History; #90171 (2013)

Yong Xu and Satinder Chopra

Search and Discovery.com

... in Athabasca oil sands, including (1) using a windowed approach instead of a sample-by-sample basis; (2) applying error-based weights in the frequency...

2013

Abstract: Salt Mapping Using 3D-marine CSEM Surveys; #90171 (2013)

J.J. Zach, M.A. Frenkel, A.M. Ostvedt-Ghazi, S. Goldstein, A. Kumar, and T. Pham

Search and Discovery.com

...) was conditioned for 3D inversion, producing frequency-domain data and noise estimates using the methodology described in Zach et al. (2008b). The time...

2013

Abstract: Nisku Multiple Attenuation with Interpolation and Sparsity: A Case Study; #90172 (2014)

Lee Hunt, Scott Reynolds, Mark Hadley, Scott Hadley, Mike Perz, Ye Zheng

Search and Discovery.com

... it for both parabolic and hyperbolic applications that could be solved in either the time or frequency domain (Sacchi, 2009). The use of sparsity constraints...

2014

Abstract: How much well do you need in Acoustic Impedance Inversion?; #90174 (2014)

Heather J. E. Lloyd and Gary F. Margrave

Search and Discovery.com

... that has been filtered at a low pass cut-off frequency determined by the user in the frequency domain. These results are then added together...

2014

Abstract: Estimating Q from Hydraulic Fracture Related Seismicity; #90187 (2014)

Gisela Viegas, Adam Baig, Ted Urbancic, Eric von Lunen, Jason Hendrick, and Sean Lovric

Search and Discovery.com

..., stress drop, radiated energy, etc., are commonly calculated in the frequency domain from the displacement amplitude spectrum of P and/or S waves...

2014

Abstract: Model Parametrization Strategies for Newton-Based Acoustic Full Waveform Inversion; #90224 (2015)

Amsalu Y. Anagaw

Search and Discovery.com

... Stekl, I. and R. G. Pratt, 1998, Accurate viscoelastic modeling by frequency-domain ïnAnite differences using ˘¸ rotated operators: Geophysics, 63...

2015

Characteristics of the Free Surface Multiple Attenuation Using Wave Field Extrapolation; #40504 (2010)

Patrícia P. Ferreira, Marco Antonio, Cetale Santos, and Luiz Landau

Search and Discovery.com

... for a medium characterized as a volume D enclosed by a surface S. It can be described in the frequency domain by (Wapenaar and Berkhout, 1989): , (1...

2010

A Practical Review of Migration Issues and Solutions; #40723 (2011)

Ian F. Jones

Search and Discovery.com

... time domain, frequency domain, and common shot, common azimuth, or common offset data, etc, and can also be solved with several different numerical...

2011

Incorporating Fault Intensity and AVO Inversion to Characterize a Shale Gas Reservoir; #41346 (2014)

Carl Reine and Sean Lovric

Search and Discovery.com

... of P-impedance and Poisson’s ratio both show similar behaviour to one another. Spectral analysis of the maps in the spatial frequency domain shows...

2014

Detecting Lateral Continuity of Taranaki Basin Reservoir Sand Based on Sequence Stratigraphy and Seismic Attribute Analysis; #10741 (2015)

Joseph Gnapragasan, Umar Hamzah

Search and Discovery.com

... N-S trending channels compared to the one at higher frequency. Higher frequency domain seems to have lower signal to noise ratio compare to the lower...

2015

Interpolation, PSTM, AVO, and a Thin Gas Charged Viking Shoreface in West Central Alberta; #41555 (2015)

Lee Hunt, Scott Hadley, Mark Hadley, Jon Downton, Bashir Durrani

Search and Discovery.com

... in the spatial frequency domain tends to ensure that the amplitude changes slowly in all four spatial dimensions including offset and azimuth while...

2015

Are Key Technological Changes of the Last Three Years Enough to Warrant Reprocessing? Interpolation and AVO Inversion for the Nisku at Brazeau; #41556 (2015)

Lee Hunt, Scott Reynolds, Mark Hadley, Scott Hadley, Jon Downton, Bashir Durrani

Search and Discovery.com

... constraint applied in the spatial frequency domain tends to ensure that the amplitude changes slowly in all four spatial dimensions including offset...

2015

Seismic Attributes for Prediction of Reservoir Architecture and Hydrocarbon Prospectivity: A Case Study of Zubair Formation in Bahrah Area, North Kuwait, #41914 (2016).

Eman Al-Shehri, Subrata K. Bhukta, Prabir K. Nath, Sunil K. Singh, Afrah Saleh Al-Ajmi

Search and Discovery.com

... with the lowering in the gamma ray log. These are tied to the inverted seismic data in the relative P-impedance domain within estimated seismic frequency band (5-65...

2016

Integrated Reservoir Characterization of Thin Bed Reservoir in Desert Area, #20391 (2017).

Jie Chen, Jixiang Lin, Jie Li, Yu Lin, Yaonan Li, Jing Bie, Yuzhen Wang

Search and Discovery.com

.... Wu, 2005, Spherical divergence and absorption in time and frequency domain: Oil Geophysical Prospecting, v. 40, p. 176–182. Sen, M.K., 2006, Seismic...

2017

A Parsimonious Approach to Gravity Inversion for Salt Shape Delineation; #42417 (2019)

Simone Re, Luca Masnaghetti, Elena Medina

Search and Discovery.com

... they overlap in the spatial frequency domain. However, once again, the superposition of the effects can be used to separate the contributions as schematically...

2019

Geometric mode decomposition method for diffraction separation

Peng Lin, Suping Peng, Yang Xiang, Chuangjian Li, Xiaoqin Cui

International Meeting for Applied Geoscience and Energy (IMAGE)

... is based on the fact that, in the frequency-wavenumber (f-k) domain, strong reflections concentrate linearly along a certain dip direction whereas weak...

2022

Exploration and Detection of Subsurface Water Using Broadband Electromagnetic Sensors

T. David McGlone

Environmental Geosciences (DEG)

... 2-D and 3-D electromagnetic imaging. The wide bandwidth of the receiver also allows time and frequency domain measurements to be made simultaneously...

1998

Image - Rays and the Treatment of Inhomogeneity in Migration

L. Hatton

Southeast Asia Petroleum Exploration Society (SEAPEX)

... approaches have been supplemented by a third, the frequency domain or f-k migration technique following the work of Stolt (1978). This approach has...

1980

Predicting the time-evolution of CO2 saturation through a combination of rock physics and full-waveform inversion

Qi Hu, Dario Grana, Kristopher A. Innanen

International Meeting for Applied Geoscience and Energy (IMAGE)

... on the frequencydomain inversion formulation of Keating and Innanen (2020). We consider isotropic elasticity and a 2D medium. In the frequency domain...

2022

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