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The AAPG/Datapages Combined Publications Database

Showing 5,195 Results. Searched 200,619 documents.

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Structural Interpretation and Modeling of Seismic Data from the Moran and Paua Area, PNG Foldbelt

S. Lingrey

Papua New Guinea (PNG) Petroleum Convention Proceedings

... area that uses forward and inverse raytrace modeling to depth convert and properly position the few reflection events arising from the Toro Formation...

2000

The Use of Geoelectrical Imaging to Study Groundwater Pollution at Gemenceh Waste Disposal Site, Negeri Sembilan

Abdul Rahim Samsudin, C. A. Tan, Bashilah Baharudin, Mohd Tadza Abdul Rahman

Geological Society of Malaysia (GSM)

... = 13.1% 0.0 32.0 64.0 96 .0 ~~~~~~~~~~*=*=*-~~~ 0.5 4.3 m. 128 _______FE 8.7 15.5 Inverse Model Resistivity Section rz;:::) 1:::::1 ~ IIIID BIB...

2000

Abstract: Illumination Compensation Effect of Least Squares Migration on Seismic Imaging; #91209 (2025)

Wang Binggang, Ding Chengzhen, Yu Ming, Wu Xiaofeng, Chen Xin, Song Jiawen, Gao Jiangtao, Shen Yang, Chen Yingpeng, Qi Qunli, Zhaomin, Wang Xi, Kang Xupeng

Search and Discovery.com

... squares migration imaging employs the inverse of the Hessian matrix to perform illumination compensation on conventional migration outcomes, thereby...

2025

Reevaluating Depositional Models for Shelf Shales; #50242 (2009)

Janok Bhattacharya

Search and Discovery.com

... structures include diffusely stratified beds that show both normal and inverse grading, indicating sustained flows that waxed and waned. They also display...

2009

Re-evaluating Depositional Models for Shelf Shales: Examples from the Cretaceous Seaway of North America; #50383 (2011)

Janok Bhattacharya and James A. MacEachern

Search and Discovery.com

... a correspondingly hyperpycnal character. Physical sedimentary structures include diffusely stratified beds that show both normal and inverse grading...

2011

Multiple Milankovitch Cycles in the Bridge Creek Limestone (Cenomanian-Turonian), Western Interior Basin

B.B. Sageman, J. Rich, M.A. Arthur, W.E. Dean, C.E. Savrda, T.J. Bralower

Special Publications of SEPM

... provide an In recent years Fourier techniques have been successfully employed to quantify evidence for Milankovitch forcing in sedimentary records...

1998

Correlation Strategies for Clastic Wedges

Timothy A. Cross, Margaret A. Lessenger

Rocky Mountain Association of Geologists

... cycles, each displaying base-level rise asymmetry (Plate A). Where developed, the two base-level rise asymmetric cycles transform again into a single...

1997

Integration of Outcrop and Modern Analogs in Reservoir Modeling: Overview with Examples from the Bahamas

G. Michael Grammer, Paul M. Mitch Harris, Gregor P. Eberli

AAPG Special Volumes

... and permeability, i.e., the finest grained sediments have the highest porosity and the lowest permeability (Enos and Sawatsky, 1981). This inverse trend...

2004

Chapter 150: Point Lobos State Reserve, California, USA: Submarine-canyon Fill

H. Edward Clifton

AAPG Special Volumes

... parallel to flow direction), inverse grading, lateral down-dip coarsening (Figure 6), internal stratification, or any combination thereof. Degree...

2007

Subaerial Debris-Flow Deposition in the Upper Paleozoic Cutler Formation, Western Colorado

Albert W. Shultz

Journal of Sedimentary Research (SEPM)

... and inverse grading are visible in D, but grading is generally not well developed in either lithofacies. Imbrication of clasts, although more pronounced...

1984

High Resolution Seismic Reflection and Geoelectrical Resistivity Imaging at Pengkalan School Teacher's Quarters Pegoh, Ipoh, Malaysia

Mohammed Ismael Abu Shariah, Abdul Rahim Samsudin, Umar Hamzah, Abdul Ghani Refak

Geological Society of Malaysia (GSM)

.... The Two dimensional resistivity inverse models of the traverse lines are showing the low resistivity anomalies. These anomalies are interpreted...

2000

Applications of Kirchhoff Least-Squares Migration: Towards Reservoir Imaging; #42183 (2018)

Francesco Perrone, Graham Roberts, Lorenzo Casasanta, Andrew Ratcliffe, Arash Jafargandomi, Karen Purcell

Search and Discovery.com

... to reconstruct an image of such reflectivity is to apply the inverse of the modeling operator to the recorded data. However, because of the high dimensionality...

2018

Integrated 3D inversion of magnetotelluric and HeliTEM data collected in the geothermal area of Japan

Alexander Gribenko, Leif Cox, Michael Jorgensen, Michael S. Zhdanov, Masami Ikeya, Yusuke Usui

International Meeting for Applied Geoscience and Energy (IMAGE)

... distribution to the depths up to 500 m. The HeliTEM inverse model provides essential information about the near-surface conductivity distribution...

2022

Robust joint inversion and segmentation of 4D seismic data

Juan Romero, Matteo Ravasi, Nick Luiken

International Meeting for Applied Geoscience and Energy (IMAGE)

... fields to carbon capture and sequestration. Time-lapse seismic inversion is however, a notoriously ill-posed inverse problem: the band-limited nature...

2022

A New Approach to Measure Organic Density

Son T. Dang

Unconventional Resources Technology Conference (URTEC)

... and mineral true grain density, and potentially measured k – as inverse weight fraction of organic carbon to organic matters. Kvalue seems to be a good...

2014

Uncertainty quantification for full-waveform inversion with a mini-batch gradient-based sampling method

Zeyu Zhao, Mrinal K. Sen

International Meeting for Applied Geoscience and Energy (IMAGE)

... for uncertainty quantification in geophysical inverse problems by including derivative information in MCMC sampling (Martin et al., 2012; Biswas and Sen...

2022

3D inversion of electromagnetic logging-while-drilling data

David Marchant, Nigel Clegg, Luke Rawsthorne, Jari Kunnas

Petroleum Exploration Society of Australia (PESA)

... shelf is presented. METHODOLOGY In this section, we discuss the methods applied in the solution of the forward and inverse problems. Forward Modeling...

2019

Possible Utilization of Electrophoretic Phenomenon for Separation of Fine Sediments Into Grades

George Tchillingarian

Journal of Sedimentary Research (SEPM)

... cataphoretic velocity. An inverse relationship between size and velocity of clay particles treated with NaOH is shown. Results shown in table 1 also...

1952

Question of the Formation of Sulfur Oils in Nature (According to Data from Central Asia)

Kh. A. Ravikovich

Petroleum Geology: A Digest of Russian Literature

... there should be a direct genetic relationship between the sulfurization of oil and the carbon dioxide in the gas and an inverse relationship with respect...

1977

Fullband imaging

Zhengmin Zhang, Jiwei Jia, Geping Fu, Hao Zhang, David Chow, Barry Hung, Ian Anstey, Wai Leong Lai

Petroleum Exploration Society of Australia (PESA)

... in general. By applying Q Tomography on the common image gathers (CIGs) in two separate steps to obtain Qa and Qb, we generated an inverse Qt (1/ Qt...

2016

Impossibility of Bernoulli Pressure Forces on Particles Suspended in Boundary Layers: REPLY

James M. Mattinson, Richard V. Fisher

Journal of Sedimentary Research (SEPM)

... turbidite-conglomerate series, California; inverse grading: Jour. Sedimentary Petrology, v. 38, p. 1013-1023. SOUTHARD, J. B., 1970, Impossibility...

1970

Climatic and tectonic controls of lacustrine hyperpycnite origination in the Late Triassic Ordos Basin, central China: Implications for unconventional petroleum development: Discussion

G. Shanmugam

AAPG Bulletin

... but is missing from the paper by Yang et al. (2017b). THE HYPERPYCNITE FACIES MODEL Inverse to Normal Grading The term “hyperpycnite” (i.e., deposits...

2019

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