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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,293 documents.
Computer Utilization of Type Curve for Forecasting Production Performance
A. Partakoesoema, Djumero S.
Indonesian Petroleum Association
... the option to honor the high points or direct the program to find the least squares best fit. The system was given a severe test to evaluate...
1985
Determination of Heat Flow in Some Exploration Wells in the Northern Part of the South China Sea
Xia Kanyuan, Xia Sigao, Chen Zhongrong, Seiya Uyeda, Osamu Matsubayashi, Toshiyasu Nagao, Li Xinyuan, Chen Sizhong, Tang Zhengyi, Rao Chuntao, Yang Zhanfei
Geological Society of Malaysia (GSM)
... SEA (Fig. 2) by using the least-squares method in the Pearl River Mouth basin as follows: Kl ~ Kg 1-0 1/1 = 4.40 0.63 (45 data for sandstone...
1995
Acoustic modelling with elastic AVA effects
Robin P. Fletcher, James Hobro, James Rickett
International Meeting for Applied Geoscience and Energy (IMAGE)
... to near zero angle, and increase frequency, to invert for normal incidence “pseudo” reflectivity from the reflections. As a non-linear least-squares...
2023
Scalable, efficient, and adaptive simulation of frequency-domain wave propagation
Jacob Badger, Andrey Bakulin, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... of a weighted least squares system: Leading direct sparse solvers can factorize linear systems arising from three-dimensional problems in O(ω6...
2024
Hybrid 3D Marine Towed-Streamers and Ocean-Bottom Nodes Survey - Challenges and Solutions for Seismic Data Processing and Imaging
Wai Leng Cheah, Wong Li Ming Joyce, Evonne Hooi Rong Yu, Artem Sazykin, Gavin Menzel-Jones
Indonesian Petroleum Association
...) to build a noise model and then, with the help of the least-squares approach, adaptively match and subtract the model from the Z-component. INTRODUCTION...
2019
The Behavior of ZN2+ and MN2+ during Carbonate Diagenesis: Theory and Application: DISCUSSION
D. W. Morrow, I. R. Mayers
Journal of Sedimentary Research (SEPM)
... diagenesis with the 0.05 and 0.14 coefficients, respectively. The range of strontium values is for the low-magnesian calcite of Barbados, and the least squares...
1980
Statistical Analysis of Regional Facies Change in Ordovician Cobourg Limestone in Northwestern New York and Southern Ontario
L. Lippitt
AAPG Bulletin
... to be linear and a best fit made to the observational data by the method of least squares. The resulting equation for the regression line (best fit trend...
1959
Study on fluid discrimination method based on prestack frequency-dispersion characteristics
Lien Bian, Jun Ming, Yuxiu Wang, Qian Yu
International Meeting for Applied Geoscience and Energy (IMAGE)
... f ) B (t ) ( f f )C (t ) 0 n m 0 n m 0 n m By the least squares inversion (SVD) equations (15) and (16), we can get the I a , I b and I c...
2022
Dual constrained reservoir modeling with geological factors and seismic attributes for exploration stage
Hongmei Luo, Yiran Xing, Changjiang Wang, Zhijing Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... a quadratic polynomial nonlinear relation is established by the least squares method between the fan's advance distance(L), width-to-depth ratio(k), boundary...
2023
Magnetic Anomalies of the Northern Gulf of California: Structural and Thermal Interpretations: Chapter 22: Part III. Regional Geophysics and Geology
O. Sanchez-Zamora, P. Doguin, R. W. Couch, G. E. Ness
AAPG Special Volumes
.... The slopes of the straight lines in Figure 7, fitted by least squares, yield the average depth, h, to the tops of the magnetic sources according...
1991
Time-domain extended-source full-waveform inversion for acoustic vertically transversely isotropic media: Theory and numerical validation
Gaoshan Guo, Stephane Operto, Hossein S. Aghamiry
International Meeting for Applied Geoscience and Energy (IMAGE)
... by fitting the measured scattered data (the data residuals) in a least-squares sense. Then they are used to approximate the missing scattered wavefield...
2023
Integration of Vertical Seismic, Surface Seismic, and Well-log Data at the Mallik 2L-38 Gas-hydrate Research Well, Mackenzie Delta, Canada
M. W. Lee, T. S. Collett, W. F. Agena
AAPG Special Volumes
... with the following equation:where a and b are the intercept and slope of the least squares fit of the amplitude ratio. In attenuation measurements...
2009
Trace-Element and Major-Element Stratigraphy in Quaternary Sediments from the Arctic Ocean and Implications for Glacial Termination
A. Aldahan , G. Possnert , R. Scherer , N. Shi , J. Backman , K. Bostrom
Journal of Sedimentary Research (SEPM)
... profile (Figs. 5, 6). The least-squares linear regression correlation coefficients (Tables 2, 3) indicate significantly negative values between...
2000
A New Approach to Apply Decline-Curve Analysis for Tight-Oil Reservoirs Producing Under Variable Pressure Conditions
Leopoldo M. Ruiz Maraggi, Mark P. Walsh, Larry W. Lake
Unconventional Resources Technology Conference (URTEC)
... least-squares regression between the actual oil rate and to obtain the decline-curve model’s production history-match. This approach has been proposed...
2023
The generation of equivalent sources by 3D skeletonization of the migration density field
James Brewster
International Meeting for Applied Geoscience and Energy (IMAGE)
...ficient is found from a least squares fit to the current residual gravity gradient field. For this purpose, the five components of the gravity gradient tensor...
2022
Lithofacies prediction of shale based on broadband spectral inversion
Hongmei Luo, Yiran Xing, Changjiang Wang, Jingtao Zhang, Peijie Yang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the Least squares QR decomposition algorithm(LSQR) and simulated annealing algorithms are combined in the optimization solution. The simulated...
2022
Stratigraphic and Structural Study of Paleogene Wilcox Strata in East-Central Louisiana: Implications for Coalbed Natural Gas Exploration
Scott G. Comegys, Gary L. Kinsland, and F. Clayton Breland, Jr.
GCAGS Transactions
... electronically in PETRA® using the Highly Connected Features (Least Squares) algorithm. Posted on each map at each well are the data values relevant...
2007
Determination of Geothermal Gradient from Point Measurements of Temperature in Producing Wells
A. K. Talalayev
Petroleum Geology: A Digest of Russian Literature
... it into two segments, which were smoothed by the least squares method. The straight line for the upper part of the section, as is evident from...
1962
The application of gradient and curvature calculations based on the eigenstructure of seismic data in imaging geological discontinuities
Shihong Yuan, Ping Chen, Lei Li, Zhenyu Sa, Ruidong Han, Zhen Pang
International Meeting for Applied Geoscience and Energy (IMAGE)
... a quadratic surface to the interpreted horizon using least squares or other approximation methods. This paper proposes a new method using eigenvalue...
2024
Iterative 3D deterministic and data-driven multiple attenuation for deep-water OBN in the Campos Basin
Thais Sales, Frederico Xavier de Melo, Joel Monteiro, Dmitri Skorinski, Shady Attia, Mohammad Ghazey, Marcella Braga, Etory Sperandio, André Ferreira, Moacyr Bezerra, Thiago Costa
International Meeting for Applied Geoscience and Energy (IMAGE)
... employed a multi-band and multi-dimensional least-squares adaptive matching filter operators, initially independently computed for each deterministic...
2024
Thickness Change Involved in the Peat-to-Coal Transformation for a Bituminous Coal of Cretaceous Age in Central Utah
Thomas A. Ryer, Anna W. Langer
Journal of Sedimentary Research (SEPM)
... of the exposure where the channel rests on the coal. Lines have been fitted to the two sets of data by least squares linear regression. In both instances...
1980
Application of Multivariate Statistics in Crude Quality Characterization and Regional Distribution in Orinoco Oil Belt: Section II. Characterization, Maturation, and Degradation
M. Taheri, N. M. de Audemard
AAPG Special Volumes
... coefficients, obtained by the least squares method of best fit, were applied to every pair of 14 crude characteristics (API gravity; kinematic viscosity...
1987
Mesosoic and Cenozoic Thermal History of Sedimentary Rocks in the Bintuni Basin, Irian Jaya, Indonesia
Paul B. O'Sullivan, Kevin C. Hill, Ijep Saefudin, R. Daniel Kendrick
Indonesian Petroleum Association
... VR data set, which displays the obvious kink at ~2,000m, does not allow a "least-squares" estimate of the maximum paleogeothermal gradient. However...
1995
Seismic applications of the Radon transform and a new second-order traveltime local transform
Ehsan Soleymani, Mauricio Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... Radon transforms that exploits the Toeplitz structure of the Radon least-squares solution in the ω − x domain. The above contributions correspond...
2024
AAPG/Datapages Discovery Series No. 7: Multidimensional Basin Modeling, Chapter 2: Modeling Thermal Histories: How Important Are Thermal Conductivity Data?
Gallagher, K.
AAPG Special Volumes
..., reported as formation matrix thermal conductivities by Deming et al. (1992, 1996), was used to determine least-squares estimates of the matrix...
2003