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The AAPG/Datapages Combined Publications Database

Showing 1,680 Results. Searched 200,357 documents.

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Influence of Depositional Sand Quality and Diagenesis on Porosity and Permeability: Examples from Brent Group Reservoirs, Northern North Sea

S. N. Ehrenberg

Journal of Sedimentary Research (SEPM)

... lines are least-squares fits to points with permeability > 1 mD. Short-dashed line in B shows trend rom unsorted data values in A\. Long-dashed curve...

1997

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

Least-squares reverse time migration: Lessons learned from recent applications in challenging areas of the Santos Basin, Brazil

Jos Rodrigues, Felipe Duarte, Danilo Domingos, Bruno Pereira-Dias, Elionardo Pintas

International Meeting for Applied Geoscience and Energy (IMAGE)

...Least-squares reverse time migration: Lessons learned from recent applications in challenging areas of the Santos Basin, Brazil Jos Rodrigues, Felipe...

2022

Stacking common-image gathers via the flatten-illumination-similarity method

Chengliang Wu, Huazhong Wang, Bo Feng, Chao Ning, Xianggong Tang

International Meeting for Applied Geoscience and Energy (IMAGE)

... least squares migration (LSM) (Schuster and Liu, 2019, Wang et al., 2016). Compared to migration methods, LSM has the ability to correct various...

2023

Abstracts: Prewhitening with Matrices; #90173 (2015)

C. Robert Pinnegar

Search and Discovery.com

... amplitude followed by zeroes. ( is the length of , and is the length of .) To obtain a least-squares estimate of from (3), we must solve the familiar...

2015

Oil vs. Gas: What are the Limits to Prospect-Level Hydrocarbon Phase Prediction?; #42513 (2020)

Andrew Murray, Zhiyong He

Search and Discovery.com

... Squares – Concentration (ALS-C) and Alternating Least Squares – Ratios (ALS-R) methods applied to set of biomarker indicators as described by Peters et...

2020

3D inversion and visualization of DC data acquired at dense borehole locations

Diego Domenzain, Lichao Liu, Anders Kristian Kuhl, Anders Vest Christiansen, Ivn Ylamos Vela

International Meeting for Applied Geoscience and Energy (IMAGE)

.../10.5194/gi-8-1-2019. Loke, M. H., and R. Barker, 1996, Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method 1: Geophysical...

2022

Application of Trend Analysis to Pre-Morrow Surface, Southeastern Hugoton Embayment Area

M. W. Schramm Jr.

Oklahoma City Geological Society

... for eliminating regional dip: am. Assoc. Petroleum Geologists Bull., v. 19, no. 10, p. 1538-1543. Simpson, S. M., 1954, Least squares polynominal fitting...

1970

Multiparameter FWI imaging in the Gulf of Mexico

Tom Rayment, Karen Dancer, James McLeman, James Penwarden, Tim Ooi, Monica Hartmann

International Meeting for Applied Geoscience and Energy (IMAGE)

... issues that employs an L-BFGS optimiser combined with an adaptive-gradient-like approach. MP-FWI imaging is a multi-scattering, least-squares imaging...

2023

Prestack true-amplitude angle-domain viscoelastic least squares reverse time migration

Yue Wang, Yang Luo, Peng Shen, Jingru Chen, Guangchi Xing, Ao Cai, Mark Fan, Guojian Shan, Lin Zhang, Xiaoting Lou, Zhengyun Zhou

International Meeting for Applied Geoscience and Energy (IMAGE)

...Prestack true-amplitude angle-domain viscoelastic least squares reverse time migration Yue Wang, Yang Luo, Peng Shen, Jingru Chen, Guangchi Xing, Ao...

2024

ENHANCED IMAGING BENEATH COMPLEX GAS CLOUDS AND CARBONATES USING Q-TLFWI AND LS-QPSDM ON ULTRA-SPARSE SHALLOW WATER OBC NORTHWEST JAVA BASIN, OFFSHORE INDONESIA

Chenghai Jiao, Yitao Chen, Peipei Deng, Hudzaifah, and Normansyah

Indonesian Petroleum Association

...-TLFWI) and Least Squares Q-Pre-Stack Depth Migration (LS-QPSDM), along with high-fidelity 5D interpolation. Q-TLFWI was applied to obtain reliable...

2025

Abstract: X-Ray diffraction results from the weathering zone above the Bisha volcanic-hosted massive sulphide deposit, Eritrea

Kacper Halama, Cliff Stanley

Atlantic Geology

..., and chalcopyrite), and (v) hypogene massive sulphide (pyrite, sphalerite, and chalcopyrite). Using lithogeochemical compositions of these rocks, ordinary least...

2011

Abstract: X-ray diffraction results from the weathering zone above the Bisha volcanic hosted massive sulphide deposit, Eritrea

Kacper Halama, Cliff Stanley

Atlantic Geology

..., and chalcopyrite). Using lithogeochemical compositions of these rocks, ordinary least squares regression methods were used to obtain ‘best fit’ mineral modes...

2012

Residual Gravity Analysis of the Mid-Continent Gravity High: ABSTRACT

Richard L. Coons, George P. Woollard, Garland Hershey

AAPG Bulletin

... involving the fitting of non-orthogonal polynomial surfaces to a collection of gravity data by the principle of Least Squares has been developed...

1964

Application of Trend Analysis to Pre-Morrow Surface, Southeastern Hugoton Embayment Area, Texas, Oklahoma, and Kansas

Martin W. Schramm, Jr.

AAPG Bulletin

... regional dip: Am. Assoc. Petroleum Geologists Bull., v. 19, no. 10, p. 1538-1543. Simpson, S. M., 1954, Least squares polynomial fitting to gravitational...

1968

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