Seismic Imaging and Model Building in Complex Rift Geology

Search and Discovery.com

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...

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user1

Search and Discovery.com

... equation deconvolution (Poole et al., 2022) using least squares multiple imaging was utilized to model and attenuate surface multiples, alongside...

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)

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A NEW TECHNIQUE FOR 3-D FLEXURAL-SLIP RESTORATION, P.A. Griffiths et. al., #40038

Search and Discovery.com

The Tectonic Stress Field in Eastern Australia

S. Zhao, R. D. Müller

Petroleum Exploration Society of Australia (PESA)

... the squared residuals between the observed and modelled stress orientations reach a minimum, in a least squares sense. The final estimates of the tectonic...

Data Analytics for Production Optimization in Unconventional Reservoirs

Srikanta Mishra, Jared Schuetter, Ming Zhong, Randy Lafollette

Unconventional Resources Technology Conference (URTEC)

... in Table 3. Table 2. Several Regression Modeling Options Model Ordinary Least Squares (OLS) Regression Random Forest (RF) Gradient Boosting Machine (GBM...

Applications of the Diffusive Time of Flight to a Data Driven Approach for Decline Curve Analysis

Ankit Bansal, Michael J. King

Unconventional Resources Technology Conference (URTEC)

..., in a least squares sense, to a sliding window of data (Sadeghi & Behnia, 2018). The length of the sliding window is a tuning parameter that is selected based...

Geotechnical Properties of Continental Slope Deposits Cape Hatteras to Hydrographer Canyon

George H. Keller, Douglas N. Lambert, Richard H. Bennett

Special Publications of SEPM

... of the sediment is greater than the slope i the two lines will never intersect and infinite sediment angle Least squares lines of 12 versus depth...

Analysis of Electromagnetic Induction Logs to Investigate Saltwater Intrusion into an Alluvial Aquifer

Glenn W. Garneau

Environmental Geosciences (DEG)

... (42,000 mg/L; Figure 4). The resulting profiles were then plotted on depth-normal probability axes, and a least-squares regression line was fit to them...

The Nonlinear Inversion of Paleogeothermal Evolution: An Example from the Northern Part of the South China Sea

Xue aimin

Geological Society of Malaysia (GSM)

..., the least squares statistical analysis was used to obtain the relationship of Ro data with depth. The relationship of Ro with depth accepted...

How Porosity and Permeability Vary Spatially with Grain Size, Sorting, Cement Volume, and Mineral Dissolution in Fluvial Triassic Sandstones: The Value of Geostatistics and Local Regression

J.M. McKinley, P.M. Atkinson, C.D. Lloyd, A.H. Ruffell, R.H. Worden

Journal of Sedimentary Research (SEPM)

... were fitted using the weighted least-squares method implemented in Gstat (Pebesma and Wesseling 1998). A spherical model with a nugget effect was fitted...

Organic Geochemistry in Relation to the Depositional Environments of Middle Jurassic Coal Seams, Danish Central Graben, and Implications for Hydrocarbon Generative Potential

Henrik Ingermann Petersen, Per Rosenberg, Jan Andsbjerg

AAPG Bulletin

... was done using the computer program sirius (Kvalheim and Karstang, 1987). The partial least squares regression (PLSR) method was used. In PLSR, one...

Hydrology and Permeability Testing in the Fort Union: Case Study of the H-Wellfield, Highland Uranium Project, Wyoming

Bonnie Percy

Wyoming Geological Association

... to graphically analyze the data was AquiferTest, which was developed by Waterloo Hydrogeologic, Inc. Automatic data fitting using least squares...

Rapid Quantification of Mineralogy, Organic Matter, and Thermal Maturity of Cuttings With Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS): A Permian Basin Case Study

MaryEllen L. Loan, Michael M. Herron, Paul Craddock, Romain Prioul, Michael Prange, Kenneth M. Schwartz, Alyssa M. Charsky

Unconventional Resources Technology Conference (URTEC)

... sample by a weighted least-squares regression of the unknown measured spectrum against a library of known mineral-standard spectra. The 2671423 3...

Contouring by Machine: A User's Guide

Richard F. Walters

AAPG Bulletin

... is derived as a least squares function of these values, weighted according FOOTNOTE 3. ACI Contouring Package available through E. J. Assiter, President...

Effect of Organic Matter Properties, Clay Mineral Type and Thermal Maturity on Gas Adsorption in Organic-Rich Shale Systems

Tongwei Zhang, Geoffrey S. Ellis, Stephen C. Ruppel, Kitty Milliken, Mike Lewan, Xun Sun

Unconventional Resources Technology Conference (URTEC)

... be determined with a least-squares method to fit our experimentally measured CH4-sorption isotherms and the calculated isotherms with Eq. (1...

Cascaded full-waveform inversions to resolve Mesozoic structures in shallow-water Gulf of Mexico with limited-offset data

Wei Kang, Christoph Koeninger, Miguel Acosta Perez, Josue Jurado Ramirez, Imran Nagir, Denes Vigh, Silvino Dominguez Garcia, Alfredo Vazquez Cantu, Luis Arturo Vega, Marco Antonio Mayorga

International Meeting for Applied Geoscience and Energy (IMAGE)

... the least-squares or 1D phase-based objective functions fails to handle the complex wavefield when the observed and predicted shots have different patterns...

One more stride forward in Thunder Horse subsalt imaging with elastic FWI

Bunmi Elebiju, Qingsong Li, Ken Hartman, Francis Rollins, Ye Feng, Karl Kaiser, Werner Schinagl, Chi Chen, Alex Yanjun Hao, Zhiyuan Wei, Jiawei Mei

International Meeting for Applied Geoscience and Energy (IMAGE)

... for pinchout QC validation. (a) 30 Hz Least-Squares and (b) 20 Hz Quadrature RTM image with E-TLFWI model. (c) Acoustic FWI Image; and (d) elastic FWI Image...

Use of Corals in Determining Glacial-Interglacial Changes in Temperature and Isotopic Composition of Seawater: Reef Biota

Jon N. Weber

AAPG Special Volumes

... National Ocean Survey Publication 31-3 (1970). Type 1 least-squares linear-regression analys s was used to calculate the best-fit curve expressing...

On the stability of stress inversions from earthquake mechanisms and choosing the fault plane

Adam M. Baig, Sepideh Karimi, Aaron Booterbaugh

International Meeting for Applied Geoscience and Energy (IMAGE)

...://doi.org/10 .1029/97JB01274. Tarantola, A., and B. Villotte, 1982, Generalized nonlinear inverse problems solved using the least squares criterion...