ABSTRACT: Circum-Arctic Petroleum Systems Defined Using Biomarkers, Isotopes, and Chemometrics; #90108 (2010)

Kenneth Peters, L. Scott Ramos, and John Zumberge

Search and Discovery.com

... contributions from different source rocks to the giant Prudhoe Bay Field. Alternating least squares of concentration data (ALS-C) for 46 biomarkers...

Tutorial on Compressive Sampling

Search and Discovery.com

... the least squares (L2 minimization) which tends to spread the energy around. This results AAPG Search and Discovery Article #90170©2013 CSPG/CSEG/CWLS...

Abstract: Navigating through the Red Sea Subsalt Structures: A Look-Ahead VSP Case Study from Saudi Arabia; #90319 (2018)

Ali A. Aldawood, Carlos Planchart

Search and Discovery.com

... is consistent with the geological interpretation and the surface seismic. Least-squares migration was also used to further enhance the final VSP image...

Abstract: Lean Salt Architecture in the Gulf of Mexico - Where Have all the Diapirs Gone;

Hermann Lebit, William Beck, Susana Tierrablanca, Matheus Pila

Search and Discovery.com

... end Full Waveform Inversion and least-squares migration. Despite these technology leaps, the final seismic product strongly depends...

Abstract: Deconvoluting Mixed Petroleum and the Effect of Oil and Gas-Condensate Mixtures on Identifying Petroleum Systems;

Kenneth Peters, Andrew Murray

Search and Discovery.com

... by alternating least squares regression of compound ratios (ALS-R) and concentrations (ALS-C) in the traditional C15+ range. Results show that ALS_R...

Abstract: 4D Seismic Coprocessing Best Practices, Case Studies Offshore, Abu Dhabi, UAE; #91204 (2023)

Mohamed Mahgoub, Guillaume Cambois, Olivier Kirstetter, Khalid Obaid

Search and Discovery.com

... the two surveys. For both studies we ultimately compared a conventional Kirchhoff pre-stack depth migration (KPSDM) with image-based least-squares...

Effective Delivery of Reservoir Compliant Seismic Data Processing; #42158 (2017)

Arash JafarGandomi, Henning Hoeber, Celine Lacombe, Vimol Souvannavong

Search and Discovery.com

.... As an example, the recently developed least-squares migration is examined. The goal of least-squares migration is to account for illumination issue...

From Turbidite Bed Thickness Distributions to Depositional Environments: Methods and Pitfalls of Fitting and Interpreting the Power-Law and Lognormal Models, by Zoltan Sylvester; #90041 (2005)

Search and Discovery.com

Global Sea-Level Changes During the Past Century

Vivien Gornitz, Sergej Lebedeff

Special Publications of SEPM

... contributing stations by distance from a given cell and relative coastal area. A least-squares regression line is then fitted to the composite regional sea...

Assisted History Matching using Bayesian Inference: Application to Multi-Well Simulation of a Huff-n-Puff Pilot Test in the Permian Basin

Esmail Eltahan, Reza Ganjdanesh, Wei Yu, Kamy Sepehrnoori, Hunter Drozd, Raymond Ambrose,

Unconventional Resources Technology Conference (URTEC)

... constant, 𝑝𝑝(𝜃𝜃) is the prior PDF, and 𝐹𝐹(𝜃𝜃) is the objective function, may be defined by the simplified least-squares form...

Evaluation of Boron as a Paleosalinity Indicator and its Application to Offshore Prospects

C. T. Walker

AAPG Bulletin

... regression of boron on carbon calculated by the least squares method from data for marine limestone in Table I is [EQUATION] The parabolic...

Yield Per Effort for Additions to Crude Oil Reserves in the Lower 48 United States, 1946-1989: Geologic Note (1)

CUTLER J. CLEVELAND and V. M. PENDLETON

AAPG Bulletin

... influences on YPE that were described previously. We take the natural logarithm of both sides of equation 3 and use ordinary least squares to estimate...

40Ar/39Ar and U-Pb mineral ages from the Brookville Gneiss: implications for terrane analysis and evolution of Avalonian basementŽ in southern New Brunswick

R. D. Dallmeyer, R. Doig, R. D. Nance, J. B. Murphy

Atlantic Geology

..., D. 1969. Least squares fitting o f a straight line with correlated errors. Earth and Planetary Science Letters, 5, pp. 320-324...

Fast and Reliable Estimates of Low Permeabilities by the Full-Immersion Pressure-Pulse Decay

Michael J. Hannon Jr.

Unconventional Resources Technology Conference (URTEC)

... at a coarse spatial resolution to the data with a weighted-least-squares minimization algorithm. Estimates are updated with increasing spatial resolution...

A scale-independent approach to fracture intensity and average spacing measurement

Orlando J. Ortega, Randall A. Marrett, Stephen E. Laubach

AAPG Bulletin

... of the power law, as determined by least-squares regression).The size distribution for the example discussed above (Figure 5) is shown in Figure 6. A power law...

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...

Merging Physics and Data-Driven Methods for Field-Wide Bottomhole Pressure Estimation in Unconventional Wells

Diego Molinari, Sathish Sankaran

Unconventional Resources Technology Conference (URTEC)

... models with no physics – namely, ordinary least squares (OLS) regression, lasso regression, and support vector regression. Polynomial features...

Mapping of salt structures and related fault lineaments based on remote-sensing and gravimetric data: The case of the Monte Real salt wall (onshore west-central Portugal)

Fernando Carlos Lopes, Alcides Jose Pereira, Vasco Manuel Mantas

AAPG Bulletin

... geophysical data. Agocs, W. B., 1951, Least squares residual anomaly determinations: Geophysics, v. 16, p. 686696, doi:10.1190/1.1437720.Almeida, C., J. J. L...

North Gabon: Lightning Strikes Connect the Gulf of Mexico Subsalt Trend to North Gabon

Karyna Rodriguez, Neil Hodgson, Howard Nicholls, Paolo Esestime, TGS

GEO ExPro Magazine

... as salt flank amplitude anomalies in postsalt thick sections. Very early results obtained for recent least squares Reverse Time Migration (RTM) tests...

Development of Raman Spectroscopy as a Thermal Maturity Proxy in Unconventional Resource Assessment

Grant Myers, Kelsey Kehoe, Paul Hackley

Unconventional Resources Technology Conference (URTEC)

... (MS-2671253). Similar strong relationships occurred in the Duvernay samples with respect to increasing maturity when using Partial Least-Squares analysis...

Quantitative Mineralogical Analysis of Carbonate Sediments: Comparison of X-ray Diffraction and Electron Probe Microanalyzer Methods: NOTES

Jon N. Weber

Journal of Sedimentary Research (SEPM)

... the appropriate measurements into the equation for the corresponding "working curve" (determined by a least squares fit to a large number of area measurements...

Precise Sediment Density Determination by Gamma-ray Attenuation Alone: NOTES

Robert B. Whitmarsh

Journal of Sedimentary Research (SEPM)

... volume of core and plastic liner. The least squares line fitted to 208 such comparisons never deviates by more than 0.03 gm/cc from the expected line...

Comparison of the Descriptors of Sediment Grain-Size Distributions: REPLY

Thomas A. Jones

Journal of Sedimentary Research (SEPM)

...-linear regression models in geology: Unpublished Doctoral Thesis, Northwestern University, 123 p. JAMES, W. R., 1968b, Least-squares surface fitting...

Thermal Subsidence: Chapter 4

Charles L. Angevine, Paul L. Heller, Chris Paola

AAPG Special Volumes

... a tectonic subsidence data set in a least-squares sense. There is nothing sacred about least-squares curve-fitting techniques. In the real world...

Field Method for Determining Rapidly the Dry Weight of Wet Sand Samples: RESEARCH METHOD PAPER

Nicholas C. Kraus, Lindsay Nakashima

Journal of Sedimentary Research (SEPM)

... weights (g) and results of linear least squares fit End_Page 550------------------------ the 1.2-mm sand were available. The samples were wetted...