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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,357 documents.
First arrival enhancement by statics preserving filtering using surface-consistent constraints
Alejandro Quiaro, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... [' is found solving the following damped least squares problem done by maximizing sparsity in that domain and using the result as reference data. Noisy...
2023
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
Reservoir Optimization Using Event Resolution Imaging to Separate Good Wells from Bad Wells
Daniel R. Cook, John M. Warn
West Texas Geological Society
... does not use traditional discriminant analysis, linear regression, non-linear regression or any type of algorithm which attempts to minimize a least...
2005
High-fidelity full-waveform imaging via impedance inversion
Feng Chen, Yu Zhang, Lian Duan, Weishan Han, Yilong Qin, Qianggong Song
International Meeting for Applied Geoscience and Energy (IMAGE)
... = sin cos ( )= sin cos ( ; ; ) ( ; ; ) . (3) As the inversion methods, e.g., least-squares based imaging and FWI, become the driving force...
2023
3D Refraction Statics Integrated with Surface-Consistent First-Break Picking, Iterative Inversion, and 3D Visualization
Search and Discovery.com
... Squares method. As a result, the average travel-time discrepancies between the shots become equal zero. In addition, anomalous values of tS and δtSi...
2013
3D Inversion of Time-Domain Electromagnetic Data for Ground Water Aquifers, #41610 (2015).
Elliot M. Holtham, Mike McMillan, Eldad Haber
Search and Discovery.com
... regularization functional. To minimize the non-linear objection function ϕ (m) we use the non-linear least squares method and reduce the data misfit until we...
2015
Production Optimization of CO2 Huff-n-Puff Process in Unconventional Oil Reservoirs with Effects of Gas Relative Permeability Hysteresis, Geomechanics, and Capillary Pressure
Sardar Asadov, Caner Karacer, Mustafa Onur
Unconventional Resources Technology Conference (URTEC)
... and the iterative least-squares support regression (LSSVR) proxy method are employed and compared. The optimization (or design) variables could be any...
2024
Improved Petrological Modal Analyses from X-Ray Powder Diffraction Data by Use of the Rietveld Method. Part II. Selected Sedimentary Rocks
W. G. Mumme, G. Tsambourakis, I. C. Madsen, R. J. Hill
Journal of Sedimentary Research (SEPM)
... of the diffraction peaks are not directly used, but rather a least-squares fit is obtained between the step-scanned points in the observed X-ray diffraction profile...
1996
Building Well and Fluid-Specific Pipe Friction Curves, Monitoring Perforation Cluster Efficiency During Stimulation, and Measuring Near-Wellbore Tortuosity Using Acoustic Friction Analysis
Eric M. Dunham, Saeed Rahimi-Aghdam, Junwei Zhang, Nathan Crawford, Craig Cipolla, Michael McKimmy, John Lassek
Unconventional Resources Technology Conference (URTEC)
... parameters 𝑓! and 𝑎 were determined by nonlinear least squares regression. URTeC: 4044718 7 Figure 4. Compilation from acoustic friction...
2024
Ground Roll Removal and Signal Preservation by Cascading SVD Polarization Filters with Localized Fk-Filters; #41543 (2015)
Kristof De Meersman, Chris Ansorger
Search and Discovery.com
... as ‘Coherent Noise Attenuation’ (CNA). This localized least squares fkfilter is implemented in the fx domain and allows for irregular spatial sampling...
2015
Anisotropic Multi-Azimuthal Velocity Model Building and Depth Imaging on Tulip 3D Coil Shooting Survey
Michele Buia, Suyang Chen, Olga Zdraveva, Swee Leng Ng, Martin Bayly, Michelle Tham
Indonesian Petroleum Association
...” Grid Tomography to update the model. The Grid Tomography used a damped least-squares solver at progressively finer scale lengths, with a preconditioning...
2011
Geophysics used to help find good quality groundwater in the Vientiane Plain, Lao PDR
Michael Hatch, Okke Batelaan, Eddie Banks, Somphasith Douangsavanh
Petroleum Exploration Society of Australia (PESA)
..., 1996. Rapid least-squares inversion of apparent resistivity pseudosections by a quasiNewton method, Geophysical Prospecting, vol. 44, 131-152...
2019
Study of the Relationship of Sedimentation and Structural Growth Using Trend Analysis
G. P. Myasnikova, V. I. Shpil’man
Petroleum Geology: A Digest of Russian Literature
... by the method of least squares. For calculation of the coefficients we used a program of correlational and regression analysis (Lorreg) compiled a few years...
1973
Extended Abstract: Integrating Time-Lapse 3D (4D) Seismic Data with Reservoir Simulators
John Waggoner
Petroleum Exploration Society of Australia (PESA)
... s as the correlation between the two data sets, much as the difference in production data is quantified as the sum of least squares differences. Both the production...
2000
On the Planimetric Shape of Wreck Bay, Vancouver Is.
J. M. Bremner, P. H. LeBlond
Journal of Sedimentary Research (SEPM)
... coordinates of the plan data points and (X, Y) the coordinates of the chosen log-spiral center. b) By the method of least squares, the best fitting straight...
1974
Figures: PART 1
Charles L. Angevine, Paul L. Heller, Chris Paola
AAPG Special Volumes
... parameters were estimated using the least-squares technique. End_Page 171------------------------ Fig. 4.8. Minimum and maximum estimates of water...
1990
Chemical Composition of Deep Formation Waters in Southwestern Louisiana: GEOLOGICAL NOTES
Parke A. Dickey , A. Gene Collins , Ivan Fajardo M.
AAPG Bulletin
... concentrations of chloride in formation waters. Dashed lines are least-squares fit of normally pressured waters (leaving out samples 33, 34, 35, and 36...
1972
Dating penecontemporaneous dolomitization in carbonate reservoirs: Paleomagnetic, petrographic, and geochemical constraints
M. T. Cioppa, I. S. Al-Aasm, D. T. A. Symons, K. P. Gillen
AAPG Bulletin
...: Journal of Geophysical Research, v. 94, p. 13681-13703. Kirschvink, J. L., 1980, The least-squares line and plane and the analysis of paleomagnetic data...
2003
Abstract: Resolvability Analysis of Single Azimuth Seismic Moment Tensor Inversion; #90171 (2013)
Ismael Vera Rodriguez and Mauricio D. Sacchi
Search and Discovery.com
... displacements for the corresponding component, receiver and wave type. We carried on the inversion by evaluating the least squares solution to equation (5) m...
2013
Abstract: Violet Grove Time-Lapse Data Revisited: A Surface-Consistent Matching Filters Application; #90187 (2014)
Mahdi H. Almutlaq and Gary F. Margrave
Search and Discovery.com
... baseline and monitor surveys. FFT the above result , then for every frequency, solve the surface-consistent system using least-squares method...
2014
Abstracts: Time-Lapse VSP Data Analysis from Weyburn CO2 Project; #90173 (2015)
Amin Baharvand Ahmadi, Igor Morozov
Search and Discovery.com
...) dependencies and fit straight lines to them by using the least squares method. Figure 3: Calibration of the 3-D VSP and surface seismic data at the same...
2015
Abstracts: Weighing in on the Seismic Scale: The use of Seismic Fault Measurements for Constructing Discrete Fracture Networks in the Horn River Basin; #90173 (2015)
Carl A. Reine and Rory B. Dunphy
Search and Discovery.com
... of the fault lengths and azimuths. The lateral traces of the discontinuities are first modelled in a least-squares fashion as linear events. The points...
2015
Abstracts: Application of Shear-wave Splitting Analysis to Fracture Characterization for a Shaunavon Tight Oil Reservoir; #90173 (2015)
N. Chaminda Sandanayake and Richard A. Bale
Search and Discovery.com
... are almost identical. Theory and Method The analysis for shear-wave splitting has two key steps. First, a pre-stack least-squares analysis...
2015
Non-Equilibrium Source-to-Sink Systems: Controls and Examples, #30308 (2013)
Ole J. Martinsen, Tor Somme
Search and Discovery.com
... other rights contact author directly. 1 Statoil Exploration, Norway ([email protected]) Abstract Source-to-sink analysis is a method for understanding...
2013
Resilience of the US Shale Production to the Collapse of Oil & Gas Prices
Philippe A. Charlez, Pierre Delfiner
Unconventional Resources Technology Conference (URTEC)
... is performed by calculating the best decline curve per well using a least squares algorithm. The method achieves an excellent match of production history...
2016