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The AAPG/Datapages Combined Publications Database

Showing 33,154 Results. Searched 195,689 documents.

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ABSTRACT: Reducing Ambiguity in Controlled-Source Electromatic (CSEM) Inversion; #90061 (2006)

Andrew M. Lockwood

Search and Discovery.com

... reduces the confidence intervals associated with each model parameter, leading to overconfidence in the inverse model. The effect on a drilling decision...

2006

ABSTRACT: Developing Frequency Attributes to Generate High Quality 3D Data to have Better Geologic Interpretation; #90113 (2010)

John Castagna and Dip Nanda*

Search and Discovery.com

... propagates deeper through the earth. Attenuation is one of the cause and effect of such wave propagation. Due to such attenuation effects the higher...

2009

ABSTRACT: CSEM imaging in the Black Sea; #90109 (2010)

Eva-Maria Rumpfhuber, Adrian Ciucivara, Ken Green, Dennis Willen, Glenn Bear

Search and Discovery.com

... of potential Black Sea targets. We considered the effect of background variations, including those caused by the relatively fresh water column present...

2010

Abstract: Seismic acquisition challenges in Boujdour coastal basin, Morocco; #90137 (2011)

Nawal Essalloumi, Hakima Jemjami, and Mohamed Dakki

Search and Discovery.com

...-surface and the quality of the Signal-noise ratio. It should be noted that 80 up-holes were carried out for static calculations and corrections...

2011

Abstract: Performance of Seismic Arrays in the Presence of Weathering Layer Variations; #90254 (2016)

Jubran Akram, Abdullatif A. Al-Shuhail

Search and Discovery.com

... which are typically used to attenuate horizontally traveling coherent noise and enhance vertically traveling signal. We investigate the effect...

2016

Abstract: Lithostatic-Load Effects in Geologically Constrained Model Building for Foothills Anisotropic Seismic Imaging; #90255 (2017)

Rob W Vestrum, Greg Cameron, Dennis Ellison, Zoë Vestrum

Search and Discovery.com

... settings, like a continental rift in Central Africa or a thrust belt in the Andes, seismic data is often affected by low signal-to-noise ratios...

2017

A Pore Scale Analysis of Restricted Diffusion in Shale Gas Media

Ayaz Mehmani, Jinhong Chen, Daniel Georgi, Masa Prodanovic, Carl Edwards

Unconventional Resources Technology Conference (URTEC)

... characteristics of shale gas media. A random walk algorithm is implemented to investigate the effects of pore-throat ratio (ratio of pore body radius to pore...

2014

Rapid History Matching of Petroleum Production from Well Logs and 4D Seismic via Machine Learning Techniques in the Norne Field, Offshore Norway

Jones Ebinesan, Greg Smith, Ritu Gupta

Australian Petroleum Production & Exploration Association (APPEA) Journal

... in water saturation using AI techniques such as multi-linear regression, multi-variable kriging and random forest. Statistical testing of the resulting 3D...

2023

A Visual Comparator for Degree of Sorting in Thin and Plane Sections: RESEARCH METHOD PAPER

James Harrell

Journal of Sedimentary Research (SEPM)

... deviation of these dimensions, and application of a conversion equation which adjusts the value of this statistic by correct ng for the effects of random...

1984

Abstract: Estimation of Dispersive Parameters of Surface Wave Using the Generalized S Transform; #90187 (2014)

Roohollah Askari and Robert J. Ferguson

Search and Discovery.com

...) Equation 12 can be explained by the effect of noise at low frequency components where the signal to noise ratio is small. At those frequencies, initial...

2014

An adaptive filter-based approach for the Marchenko multiples elimination scheme

Rodrigo S. Santos, Marcelo S. Souza, Daniel E. Revelo, Victor Koehne, Reynam C. Pestana, Diego F. Barrera, Laila D. L. Vergne, Jonathas Maciel

International Meeting for Applied Geoscience and Energy (IMAGE)

... that the source ghost, the imperfect source signature deconvolution, and the 3D effect compensation affect the data amplitude requiring that it must...

2023

Formation of Lateral Patterns In Rock Properties By Dolomitization: Evidence From A Miocene Reaction Front (Bonaire, Netherlands Antilles)

David A. Budd, Whitney D. Mathias

Journal of Sedimentary Research (SEPM)

... that dolomite abundance and porosity contain three scales of lateral variability. Much of the signal is random sample-to-sample noise as ∼ 65% of the total...

2015

Assessing spatial uncertainty in reservoir characterization for carbon sequestration planning using public well-log data: A case study

Erik R. Venteris, Kristin M. Carter

Environmental Geosciences (DEG)

... variability, (2) that spatial variability must be at least partially ordered in space (not random), and (3) the distance between the samples (wells) must...

2009

Abstract: Black Box Recording of Passive Seismicity: Pitfalls of not Understanding your Acquisition Instrumentation and its Limitations; #90187 (2014)

Ted Urbancic and Andreas Wuestefeld

Search and Discovery.com

... outline frequency and bandwidth limitations, consider different noise and resonance effects on signals, the effects of coupling behaviour, and introduce...

2014

Prestack inversion and amplitude variation with offset attributes as hydrocarbon indicators in carbonate rocks: A case study from the Illinois Basin

Jacob T. Murchek, Paul McColgan, Lindell C. Bridges, Ernest C. Hauser, and Doyle R. Watts

AAPG Bulletin

.... A radon filter was applied to remove multiples and random noise from the data, with parameters of low delta T = −5 ms, high delta T = 25 ms, with a S/N...

2023

Use of the Dipmeter to Improve Formation Evaluation in Thin-Bedded Sand/Shale Sequences

J. E. Sallee

Southeast Asia Petroleum Exploration Society (SEAPEX)

.... The inaccuracy of conventional log analysis and its effect on reserve calculations did not appear significant until a later date when cumulative production data...

1982

Use of the Dipmeter to Improve Formation Evaluation in Thin-Bedded Sand/Shale Sequences

J. E. Sallee, B. R. Wood

Indonesian Petroleum Association

.... The inaccuracy of conventional log analysis and its effect on reserve calculations did not appear significant until a later date when cumulative...

1981

Developing a Wireline-Log Database and a Basis for Determining Reservoir Porosity

Jeffrey A. Kane, James W. Jennings Jr.

AAPG Special Volumes

... random errors, such as measurement noise, while preserving geologically relevant information. This phase of the process does not correct for systematic...

2012

Deriving Elastic and Petrophysical Properties From Small Sample Volumes Using Digital Rock Analysis

Vegar Ravlo, Pål-Eric Øren, Cathrine Ringstad

Unconventional Resources Technology Conference (URTEC)

.... Reichweite from the analysis shows R=0, meaning a random mixing of layers in the illite/smectite portion of the clay. The mineralogy results from both...

2022

Identification of Fracture Zone in Field AŽ Using Maximum Entropy Method

Aditya T. Pratama, Leonard J.I. Lisapaly

Indonesian Petroleum Association

... Maximum entropy method is a technique which enhances the resolution and signal/noise ratio of any measure on a given system, using certain a-priori...

2005

Challenges to Processing, Interpretation and Depth Conversion Posed by Dynamic Statics Over the Ujung-Pangkah Field

Donald Easley, Ferry Yustiana

Indonesian Petroleum Association

.... The main physical parameter associated with the sediments that cause this profound effect on the seismic data is its velocity. A series of uphole...

2009

Auto-Control Model Building Using Machine Learning Regression for Extreme Response Prediction

Darrell Leong, Anand Bahuguni

Australian Petroleum Production & Exploration Association (APPEA) Journal

... conditions into discrete independent sea states of assumed stationarity. Within each sea state, random wave statistics are characterised by spectral...

2020

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