Abstract: Data Interpolation by Angular Weighted MWNI; #90187 (2014)

Mark Ng and Dan Negut

Search and Discovery.com

... data, and (3) to interpolate aliased dips. Since MWNI does a least-squares data fitting in space one frequency at a time, it uses the result from...

Simple Models for the Stress-Dependence of Anisotropic Seismic Velocities in Fractured Rock; #120053 (2012)

Richard L. Gibson, Jr. and Kai Gao

Search and Discovery.com

... of laboratory measurements of P- and S-wave data in Bedford Limestone by Coyner (1984) (symbols) and least squares inversion solution using eqs. 8 to 11 (lines...

Interpretation of Airborne Magnetic Data of Upper Benue Trough, Northeastern Nigeria, #10888 (2016).

Omeje Maxwell, E.S Joel, lusegun Adewoyin, O. Meludu, O. Meludu

Search and Discovery.com

... polynomial surface. To eliminate the regional field, a plane surface was fitted to the data by multiple regression least-squares criteria established...

Geochemical Assessment of in situ Petroleum in Unconventional Resource Systems

Daniel M. Jarvie, Albert Maende, David Weldon, Brian M. Jarvie

Unconventional Resources Technology Conference (URTEC)

... of the Bakken and Eagle Ford showing least squares correlation coefficients of 0.94 and higher. Using the extrapolated values for methane yield...

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...

Significant Error Reduction in Machine-Learning Decline Curve Analysis for Unconventional Reservoirs

Boxiao Li, Travis Billiter, Timothy Tokar

Unconventional Resources Technology Conference (URTEC)

.... This function is explicit (can be written analytically) if least-squares regression is used as the machine-learning algorithm, and is implicit if more...

Hydraulic Interpretation of Grain-size Distributions Using a Physical Model for Bedload Transport

J. S. Bridge

Journal of Sedimentary Research (SEPM)

... be readily solved for D and c. Equation 1b, derived here from least-squares polynomial regression, can be solved for D using the Newton-Raphson method...

Petrophysical heterogeneity in a Lower Cretaceous limestone reservoir, onshore Abu Dhabi, United Arab Emirates

S. N. Ehrenberg

AAPG Bulletin

... which samples are defined as “high permeability” or are excluded because of suspected plug damage. Solid diagonal lines are least-squares fits...

Integration of Gas-to-Oil Ratio into Production Decline Analysis to Predict Flow Regime Transition

S. G. Lapierre

Unconventional Resources Technology Conference (URTEC)

...-meansquare error minimization (RMSEM) and least-squares regression processes, respectively. The resulting forecasts were then combined to generate gas...

Investigation of Diffusion and Sorption in Shale Under Variable Net Stress

Ye Lyu, Devang Dasani, Theodore Tsotsis, Kristian Jessen

Unconventional Resources Technology Conference (URTEC)

... loading experiments by a non-linear least squares approach (Levenberg-Marquardt algorithm). We selected loading exp #2 for this purpose due to the more...

Quantifying Spacing Degradation in Northern Delaware Basin Using Machine Learning and Subsurface Properties

Charles Connell, Kyle LaMotta, Jizhou Li, Matt Mayer

Unconventional Resources Technology Conference (URTEC)

... spacing. For each cluster, we fit this logarithmic function to the normalized production and distance data using nonlinear least squares optimization...

Physics-based preconditioned multidimensional deconvolution in the time domain

David Vargas, Ivan Vasconcelos, Matteo Ravasi, Nick Luiken

International Meeting for Applied Geoscience and Energy (IMAGE)

... represents the wavefield we wish to recover. MDD in the G frequency domain can be solved as a regularized least-squares problem: 2 2 ˆ ˆ ˆ ˆ min P+ Gp − P...

Efficient physics-informed Bayesian inversion of VSP and hydrofrac data

Tian Qiao, George Turkiyah, Gerard T. Schuster

International Meeting for Applied Geoscience and Energy (IMAGE)

... gradient descent solutions for least squares migration (full waveform inversion) can cost no more than 5-10 (30-60) iterations. Each iteration costs about...

Hydraulic Fracturing in Coals „ Can the Data Assist Us in Better Understanding Reservoir Complexities in Coal Seam Methane Reservoirs?

Ray Johnson Jr., Thomas Flottmann, David Campagna

Petroleum Exploration Society of Australia (PESA)

... > - ••••• !:: ..J . ~ w :1!: a: w c. • ••••• • . :. 0 •••••• ·: · . . . . ... : . .. ... . ·:· ....... : .... .. .• Field Test Data Least...

Specialized processing of a massive distributed acoustic sensing (DAS) 3D VSP in a producing well

Ali Sayed, Francesca Twynam, Ran Bachrach, Philippe Caprioli, Marcus Holloway, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist

International Meeting for Applied Geoscience and Energy (IMAGE)

... to the surface seismic image. Post-stack least-squares migration in the image domain was used to compensate for illumination effects and further improve...

Acoustic approximation VTI reverse-time migration using pseudo-depth mapping method

Xinwen Zhang, Jianping Huang, Zhenchun Li

International Meeting for Applied Geoscience and Energy (IMAGE)

.... (2017); Sun et al. (2018) proposed a pseudo-depth domain cross-correlation least-squares inverse time migration method, which weakens the ambiguity...

Abstract: High Impact Data Creates High Impact Opportunities

Peter Baillie

Petroleum Exploration Society of Australia (PESA)

... application of several technologies. Technologies used include broadband processing, Full Waveform Inversion (FWI) and least squares Q PSDM (LSQPSDM). Prospects...

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...

One-way full-waveform inversion using frequency-domain model extension

Rustam Akhmadiev, Biondo Biondi, Robert G. Clapp

International Meeting for Applied Geoscience and Energy (IMAGE)

... intermediate step of solving a least-squares problem for extended reflectivity and is computationally attractive. We demonstrate the effectiveness of our...

Exploring seismic data in the flowline domain: Automated extraction of unconformities, facies boundaries and coherent reflections

Dennis Adelved, Jan Erik Lie, Aina Juell Bugge, Peter Bormann

International Meeting for Applied Geoscience and Energy (IMAGE)

.../ 1365-2397.n0079. Wu, X., and S. Fomel, 2018, Least-squares horizons with local slopes and multigrid correlations: Geophysics, 83, no. 4, IM29–IM40...

Nitrobenzene-tetrabromoethane Solutions for the Gravity Separation of Minerals: NOTES

W. A. Mclaughlin, D. C. Berkshire

Journal of Sedimentary Research (SEPM)

.... measured at [1]/[10] mole fraction intervals. By the method of least squares the following empirical relationship was obtained from these data: Density25°C...

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...

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...

Abstract: A Stratigraphic Inverse Simulation Model, by M. A. Lessenger and T. A. Cross; #91004 (1991)

Search and Discovery.com

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...