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The AAPG/Datapages Combined Publications Database

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

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A Simpler Kinetic Model of Vitrinite Reflectance

Noriyuki Suzuki , Hideki Matsubayashi , Douglas W. Waples

AAPG Bulletin

... defined, SIMPLE-Ro has only two free parameters: ^agr and ß in equation 1. The values of ^agr and ß can be determined by least-squares analysis...

1993

Advanced Caliper Processing for Early Detection of Casing Problems

Barry Nicholson

Indonesian Petroleum Association

...-fingered caliper to extract this parameter. The new eccentralization technique uses a least squares fitting and optimization routine that allows accurate...

1996

Extended Abstract: Multivariate Geostatistical Model for Groundwater Constituents in Texas

Dr. Faye Anderson

Houston Geological Society Bulletin

... allowed for the use of a covariance matrix. The model was validated with a split-sample. Estimates of iteratively re-weighted generalized least...

2016

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

ABSTRACT: Integration of Production and 4D Seismic Data for Improved Reservoir Characterization; #90017 (2003)

Mokhles Mezghani, Valerie Langlais, Mickaele Le Ravalec-Dupin, Frederic Roggero

Search and Discovery.com

... the minimization of a weighted least-squares objective function, which includes both production and 4D seismic data. The gradual deformation parameterization...

2003

ABSTRACT: Seismic Noise Tomography in the Chile Ridge Subduction Region; #90113 (2010)

Alejandro Gallego, Raymond M. Russo, Diana Comte, Victor I. Mocanu, Ruth E. Murdie, and John C. Vandecar

Search and Discovery.com

... least-squares inversion of the Rayleigh wave travel times. The process was applied to cross correlation pairs determined in two period bands, 2.5-10 sec...

2009

Abstract: From Elastic to Geomechanical Properties. Onshore Field Case Study, Saudi Arabia; #90319 (2018)

Sultan Al Otaibi, Ayman Suleiman

Search and Discovery.com

... the AI and the Young’s modulus logs with a least-squares regression line having a correlation coefficient of 99%. The resulting regression line...

2018

Abstract: Fracture Detection and Imaging Using Three-Component Borehole Seismic Data; #91204 (2023)

Ali Aldawood, Ali Alzayer, Ahmed Alawami, Abdulmohsen Alali

Search and Discovery.com

... of the fracture infills, orientation, and size. We lastly applied least-squares migration to both the synthetic and field datasets to localize the fault plane...

2023

Abstract: Deep Learning Inversion on Seismic Cubes; #91204 (2023)

Aleksandr Koriagin, Alexey Kozhevin, Stepan Goriachev, Roman Khudorozhkov

Search and Discovery.com

... each patch to fit the already assembled overlap via least-squares regression. Lastly we show how one can evaluate the assembled velocity model...

2023

Results of a Gravity Survey in the Kuala Lumpur Area

C. A. Foss

Geological Society of Malaysia (GSM)

..., 1949), least squares methods (Coons et al., 1967), spectral analysis (Gupta and Ramani, 1980), and differential methods (Clark, 1969). All...

1986

Wave-equation based amplitude versus offset inversion in long time windows, with time-variant wavelets

Dries Gisolf, Peter R. Haffinger

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Subsequently, this wavelet is convolved with a wavelet obtained from minimising the least squares difference between the data and the broad-band...

2022

Wide-angle AVO-inversion using constant P-traces: AVP-inversion

Dennis Cooke

International Meeting for Applied Geoscience and Energy (IMAGE)

..., G and 𝒅 𝜽 are known and we wish to invert equation (1) for m using a Least Squares (LS) method. A simple and often used LS technique is shown...

2022

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