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The AAPG/Datapages Combined Publications Database
Showing 1,451 Results. Searched 195,549 documents.
Abstract: Seismic Data Decomposition into Spectral Components Using Regularized Nonstationary Autoregression; #90187 (2014)
Sergey Fomel
Search and Discovery.com
... is to estimate coefficients an, n = 1,2,…,N such that the prediction error N e(x) = d(x) - å an bn (x) (1) n=1 is minimized in the least-squares sense...
2014
Chapter Nine: Inversion and Interpretation of Impedance Data
Rebecca B. Latimer
AAPG Special Volumes
... are beneficial because they are fast and they are an improvement over recursive inversions. Least-squares inversion. Least-squares inversion methods are similar...
2011
Spectral Recomposition in Stratigraphic Interpretation, #41376 (2014)
Yihua Cai, Sergey Fome, Hongliu Zeng
Search and Discovery.com
... discontinuities. We propose separable nonlinear least-squares estimation in spectral recomposition. Employing the Gauss-Newton method, separable...
2014
Mapping Thin Sand Reservoirs in Eastern India
U. K. Guru, M. Krishnamurty, V. C. Ramalah, E. W. Wiltse, Robin Westerman
Southeast Asia Petroleum Exploration Society (SEAPEX)
...’ with a simultaneous, multi-parameter optimisation of wavefield descriptors. Velocity, polarisation and frequency are optimised in a least-squares sense for downgoing...
1990
Abstract: The George and Stiles Method of Determining Porosity Cutoffs: A Computer Program, by K. C. Powers; #91017 (1992).
Search and Discovery.com
1992
Abstract: Using Fuzzy Logic to Predict Petrophysical Parameters and Improve the Accuracy of Least Squares Regression Analysis; #90211 (2015)
Joaquin Aristimuno, Milagrosa Aldana, and Anna Atencio
Search and Discovery.com
...Abstract: Using Fuzzy Logic to Predict Petrophysical Parameters and Improve the Accuracy of Least Squares Regression Analysis; #90211 (2015) Joaquin...
2015
Dynamic Evolution and Overhang Development of Salt Structures in the North Louisiana Salt Basin: Quantitative Models
Kenneth Petersen , Ian Lerche , Allen Lowrie
GCAGS Transactions
... not exist an inverse procedure that is guaranteed to search a multi-dimensional set of parameters and also find the global least squares best fit...
1992
5-D Interpolation Compensates for Poor Sampling, by Daniel Trad; #41504 (2014).
Search and Discovery.com
2014
Following Seismic Depth Imaging Technology for the Mexican Oil Industry: Experiences and Lessons Learned; #70232 (2016)
Sergio Chávez-Pérez, Mario A. Centeno-Miranda, Douglas A. Gómez-Reyes, Liliana Vargas-Meleza
Search and Discovery.com
..., we focused on seismic imaging tools like RTM (reverse time migration) LSRTM (least squares RTM), layer-based and grid-based tomography, FWI (full...
2016
Identification and Quantification of Parasequences Using Expectation Maximization Filter: Defining Well Log Attributes for Reservoir Characterization
Saurabh Sinha, Raj Kiran, Javier Tellez, Kurt Marfurt
Unconventional Resources Technology Conference (URTEC)
... wells in the area of interest. We then use Least- squares fit to obtain slopes of these parasequences. Furthermore, we map these slopes and compare them...
2019
Simultaneous inversion of velocity and angle-dependent reflectivity
Nizar Chemingui, Yang Yang, Jaime Ramos-Martinez, Guanghui Huang, Dan Whitmore, Sean Crawley, Elena Klochikhina, Sriram Arasanipalai
International Meeting for Applied Geoscience and Energy (IMAGE)
... reflectivity reflectivity, equivalent to a non-linear least-squares RTM, is shown in Figure 2B. Importantly, the angle gathers (Figure 2C) were...
2023
Determination of Well Productivity Using Pump Downtime Data
Jeff Spath
Indonesian Petroleum Association
... unknowns (PI and skin). The model is then compared, in a least squares sense, with the actual runtime data. The unknowns are updated and the process...
2000
P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta
Faranak Mahmoudian
Search and Discovery.com
...; compressional impedance, shear impedance, and density. The approximated Zoeppritz equation is least-squares fitted to the amplitude of all traces...
Unknown
P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta
Faranak Mahmoudian
Search and Discovery.com
...; compressional impedance, shear impedance, and density. The approximated Zoeppritz equation is least-squares fitted to the amplitude of all traces...
Unknown
Finding a Better Path to Impedance Inversion; #41722 (2015)
Amit Kumar Ray, Ritesh Kumar Sharma, Satinder Chopra
Search and Discovery.com
... weights calculated on the basis of inverse distance, and similarly extrapolates away from the well control. When quality checks are performed...
2015
Improving Depth Prediction Accuracy of Quantified Drilling Hazards
W. Scott Leaney, William H. Borland
Geological Society of Malaysia (GSM)
... the low frequency trend is determined, a comparatively simple least squares inversion is possible which will find the solution that remains as close...
1996
Accelerated augmented Lagrangian full-waveform inversion based on truncated randomized singular value decomposition
Jiahang Li, Hitoshi Mikada, Junichi Takekawa
International Meeting for Applied Geoscience and Energy (IMAGE)
... is becoming more and more mature; however, the minimization process of FWI, which uses a least-squares algorithm, still suffers from problems...
2023
Seismic Processing Applications on a Personal Computer
Geophysical Service (Malaysia) Sdn. Bhd.
Geological Society of Malaysia (GSM)
... times for receivers at the same depth, and obtaining the slope of a least squares fitted line we can directly arrive at the ratio of P to S wave...
1989
Abstract: Simultaneous P-P and P-S Waveform Inversion Algorithm Using Pre-Stack Time Imaging Method ; #90187 (2014)
Hassan Khaniani, John C. Bancroft, and Eric von Lunen
Search and Discovery.com
...) to estimate high resolution subsurface properties from waveform information contained in seismic data. FWI is a least-squares approach to minimize...
2014
ABSTRACT: Building and Testing Mineral Models for Mineral-Based Formation Evaluation, by A. B. Carpenter; #91021 (2010)
Search and Discovery.com
2010
Gravity Analysis of West-Central Calcasieu Parish, Louisiana: ABSTRACT
Forrest Wilson, James A. Noel
AAPG Bulletin
.... With the Bouguer values, these points served as input to least squares and model analysis systems. The least squares trend surfaces were calculated...
1983
High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration
Jianping Huang, Jidong Yang, Tengfei Lin, Zhenchun Li, and Liang Chen
AAPG Bulletin
...High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration...
2023
Sequential Shrinking Particle Swam Optimization (SSPSO) and Hierarchical K-Means Clustering Methods to Improve Probabilistic History Matching and Forecast
Theoza Nopranda
Indonesian Petroleum Association
... S. P. 1982. Least Squares Quantization in PCM. IEEE Transactions on Information Theory 28: 129-137. https://doi.org/10.1109/TIT.1982.1056489 5...
2022
Broadband Least-Squares Wave-Equation Migration
Shaoping Lu, Andrew Long, Alejandro Valenciano, Nizar Chemingui
Petroleum Exploration Society of Australia (PESA)
...Broadband Least-Squares Wave-Equation Migration Shaoping Lu, Andrew Long, Alejandro Valenciano, Nizar Chemingui Broadband Least-Squares Wave-Equation...
2018
Seismic Foldout: Potential Prospectivity Identified in the Orphan Basin
Yermek Balabekov, Yang Yang, Sriram Arasanipalai, PGS Ultima
GEO ExPro Magazine
... to the main products. Text: Yermek Balabekov, Yang Yang, Sriram Arasanipalai; PGS Full Waveform Inversion (FWI) followed by Least-Squares Migration (LSM...
2022