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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,691 documents.
ABSTRACT: Pore characteristics in relation to biogenic gas of the Paleocene-Eocene Wilcox Group, U. S. gulf coast region
Sharon M. Swanson, Maria D. Mastalerz, Peter D. Warwick, Paul C. Hackley, Mark A. Engle, Brett J. Valentine
The Society for Organic Petrology (TSOP)
... and others, 2007). A partial least-squares multivariate regression of the Ouachita Parish data is also being conducted to determine if a combination...
2012
ABSTRACT: Pyrite Grain-Size Distribution and Pyritic Sulfur Reduction in Ohio Coals: A Statistical Relationship
Mainak Mazumdar, Richard W. Carlton, Gino A. Irdi
The Society for Organic Petrology (TSOP)
... analysis was used to obtain the relationship between 0 and 6, aryd pyritic sulfur reduction at 1.60. A least squares regression equati~n was obtained...
1987
Pressure Compartments in the Powder River Basin, Wyoming and Montana, as Determined from Drill-Stem Test Data
H. P. Heasler, Ronald C. Surdam, and J. H. George
AAPG Special Volumes
.... However, piecewise continuous least-squares analyses indicate that many of the anomalies contain a nearly horizontal internal potentiometric surface...
1994
Verification of Tortuosity Equations: DISCUSSION
M. R. J. Wyllie
AAPG Bulletin
.... presented a least-squares solution of a correlation between T2 [obtained by solving Equation (2)] and measured values of (F^phgr). The correlation so found...
1955
Rubidium-Strontium Minimum Ages of Sedimentation, Uranium Mineralization, and Provenance, Morrison Formation (Upper Jurassic), Grants Mineral Belt, New Mexico: DISCUSSION
K. R. Ludwig
AAPG Bulletin
.... Rickmers, A. D., and H. N. Todd, 1967, Statistics, an introduction: New York, McGraw-Hill, 585 p. York, D., 1969, Least-squares fitting of a straight...
1980
Testing Laramide Hypotheses for the Colorado Front Range Arch Using Minor Faults
Eric A. Erslev, Scott M. Larson
Rocky Mountain Association of Geologists
... precise (reproducible) than the Angelier (1990) method whose least-squares algorithm for determining the reduced stress tensor can overly weight...
2006
A New Approach to Pore Pressure Predictions: Generation, Expulsion, and Retention Trio—Case Histories from the Gulf of Mexico
Selim Simon Shaker
GCAGS Transactions
... the borehole stable and avoiding any formation water flow follows an exponential trend as the least squares best fit for the data ranges from 9.15 to 11.7 ppg...
2015
Multicomponent Analysis of FTIR Spectra: Quantification of Amorphous and Crystallized Mineral Phases in Synthetic and Natural Sediments
Jacques Bertaux , Francois Frohlich , Philippe Ildefonse
Journal of Sedimentary Research (SEPM)
... transform infrared (FTIR) absorbance spectroscopy in the mid-infrared as a method to calculate mineral modes for such materials. Samples were prepared using...
1998
Using delta channel width to estimate paleodischarge in the rock record: geometric scaling and practical sampling criteria
Octria Adi Prasojo, Anna E. van Yperen, Trevor B. Hoey, Amanda Owen, Richard Williams
Journal of Sedimentary Research (SEPM)
... using log-log ordinary least squares (OLS) regression. This scaling does not allow calculation of the discharge or paleodischarge for a single...
2024
The Crude Oils of Wyoming—Product of Depositional Environment and Alteration
Richard D. McIver
Wyoming Geological Association
... oils of the Wind River Basin. The solid lines are the best least-squares lines for the data points shown. The dashed lines are the best least-squares...
1962
Seismic Foldout: Gippsland Basin, Australia: New Data Provides Compelling Insights in Unexplored Areas
Jarrad Grahame, CGG
GEO ExPro Magazine
.... These included 3D joint source and receiver deghosting, the latest fullwaveform inversion and least-squares Q pre-stack depth migration (QPSDM...
2022
Earthquake Swarm near Great Sand Dunes, Colorado, Investigated with Temporary Seismic Network and Machine Learning Seismic Phase Analysis
Kyren R. Bogolub, Jackson P. Bell, Enrique R. Chon, Robert M. Kirkham, Anne F. Sheehan
Rocky Mountain Association of Geologists
...., and Frazer, L.N., 1986, HYPOCENTER: An earthquake location method using centered, scaled, and adaptively damped least squares: Bulletin...
2023
A Comparison between Geostatistical Inversion and Conventional Geostatistical-simulation Practices for Reservoir Delineation
C. Torres-Verdn, A. Grijalba-Cuenca, H. W. J. Debeye
AAPG Special Volumes
.... This convolution yields a numerical simulation of the poststack seismic amplitude data. A seismic residual (normally a least-squares residual...
2006
Characterization of a Shallow Steamed Oil Reservoir Using Crosswell Seismology
Bjorn N. P. Paulsson, John W. Fairborn
Indonesian Petroleum Association
... method. Conventional methods solve all the equations simulta-neously, usually by least squares. ART differs in this respect; it solves one equation...
1990
Quantitative Interpretation: Use of Seismic Inversion Data to Directly Estimate Hydrocarbon Reserves and Resources
James Shadlow, Adam Craig, David Christiansen, Robert Mitchell
Petroleum Exploration Society of Australia (PESA)
... was conducted using Petrel, and corrections were applied in 3D using a least-squares error minimisation approach. Analysis showed that 206 of the 317...
2018
Hard and Soft Data Integration in 3-D Reservoir Modeling: A Case History from Pedada Field, Central Sumatra
P. T. Janele, S. D. Jenkins, A. A. Reed
Indonesian Petroleum Association
.... Traditional analysis typically involves the construction of cross plots of porosity and permeability to fit some least squares regression polynomial...
1996
Accuracy of Determination of Relative Gravity by Torsion Balance
Donald C. Barton
AAPG Bulletin
... error which can be calculated by the formula: FOOTNOTE 1. Mansfield Merriman, A Textbook on the Method of Least Squares, 8th ed. (1911), pp. 66-79...
1932
Rational Analysis of Future Rate of Natural Gas Production
Martin A. Elliott , C. G. Von Fredersdorff
AAPG Special Volumes
... DESCRIBED An analysis of the type given here for natural gas is being extended to oil production. In this study a least-squares fit has been used...
1968
Forecasting Production from Bakken and Three Forks Wells Using a Segregated Flow Model
Frank Male, Amin Gherabati, John R. Browning, Michael Marder, Svetlana Ikonnikova
Unconventional Resources Technology Conference (URTEC)
... production are segregated. Performing an ordinary least squares regression from the 13-18 month watercut and each subsequent watercut, we find a very...
2017
Geologic Significance of a Geothermal Gradient Curve
Walter B. Lang
AAPG Bulletin
.... Van Orstrand for the well-temperature data and to H. C. Spicer for his computation by the method of least squares of smoothed reciprocal gradients...
1937
X-Ray Fluorescence and Laser Induced Breakdown Spectroscopy for Advanced Rock Elemental Analysis
Heyleem Han, Son Dang, Juan C. Acosta, Jing Fu, Carl Sondergeld, Chandra Rai
Unconventional Resources Technology Conference (URTEC)
... (400-780nm) to infrared (780-960nm). Using a partial least square regression (PLS) and signal normalization, an inversion method was developed for rock...
2019
An Effective Physics-Based Deep Learning Model for Enhancing Production Surveillance and Analysis in Unconventional Reservoirs
Yuewei Pan, Ran Bi, Peng Zhou, Lichi Deng, John Lee
Unconventional Resources Technology Conference (URTEC)
... Smoothing and differentiation of data by simplified least squares procedures. Analytical chemistry, 36(8), 1627-1639. DOI:10.1021/ac60214a047. Sun, Q. a...
2019
Quantitative Modeling of the Dynamic Evolution of Salt Structures
Kenneth Petersen, Ian Lerche
GCAGS Transactions
... minimum. Unfortunately, there does not exist any procedure which can automatically search and find a global least squares best fit to observations...
1992
Time-Lapse Seismic Monitoring of Individual Hydraulic Frac Stages Using a Downhole Distributed Acoustic Sensing Array
Gary Binder, Aleksei Titov, Diana Tamayo, James Simmons, Ali Tura, Grant Byerley, David Monk
Unconventional Resources Technology Conference (URTEC)
...ed above. In the future and with less noisy data, a least squares inversion of the time shifts could be performed to estimate the model paramete...
2019
Characterizing the Tops of Devonian Units in the Challenging Sub-Andean Region of Bolivia
Paola Delgado, Gerardo Villacorta, Andrea Di Daniel, Karim Bondabou
Unconventional Resources Technology Conference (URTEC)
... by a weighted least-squares regression of the unknown measured spectrum against a library of known mineral-standard spectra. Chemostratigraphy, as applied here...
2024