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The AAPG/Datapages Combined Publications Database

Showing 17,717 Results. Searched 200,636 documents.

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ABSTRACT: Gas Hydrate Detection Using VSP Data and its Correlation with Dell Log Data; #90118 (2011)

Indresh Kumar

Search and Discovery.com

..., and in exploration and research wells. The two primary properties are seismic velocity and electrical resistivity. Both properties can be measured in field surveys...

2011

Abstract: Velocity Anisotropy from Core Measurements, VSP and Sonic Logs Analysis in a Single Well Study in NE Alberta; #90224 (2015)

Judith Chan and Douglas R. Schmitt

Search and Discovery.com

...Abstract: Velocity Anisotropy from Core Measurements, VSP and Sonic Logs Analysis in a Single Well Study in NE Alberta; #90224 (2015) Judith Chan...

2015

Abstract: Salt Shape Tomography; #90254 (2016)

Patrice Guillaume, Olivier Hermant, Stanislaw Warzocha

Search and Discovery.com

... of velocity up to approximately 6 Hz but have difficulty estimating the position and amplitude of strong velocity contrasts. Using tomography to determine...

2016

Abstract: Constrained 3D VTI Full Waveform Inversion of Wide Azimuth Data from the Red Sea, Saudi Arabia; #90254 (2016)

Young Seo Kim, Constantine Tsingas

Search and Discovery.com

... velocity fields by employing an optimization approach. This methodology is based on the minimization of an objective function between the recorded data...

2016

Abstract: Near Surface and Anisotropy Modeling Strategies for Fast-Track Land Depth Imaging; #90319 (2018)

Ernesto Sandoval-Curiel, Daniele Colombo

Search and Discovery.com

... mostly related to the near-surface velocity variations where these complexities can cause poor imaging, generate distortions and ultimately mask...

2018

Abstract: FWI Using Reflections in Shallow Waters Offshore Abu Dhabi; #91204 (2023)

Carlos Barajas, Olivier Hermant, Oleg Khakimov, Bastian Hutahayan, Guillaume Cambois, Mohamed Mahgoub, Olivier Kirstetter

Search and Discovery.com

... and low velocity layers creating high apparent anisotropy in the bandwidth of seismic surveys. Obtaining an accurate description of the velocity...

2023

Abstract: Travel-time Inversion in a Surface Consistent Scheme; #91204 (2023)

Diego Rovetta, Apostolos Kontakis, Daniele Colombo, Ernesto Sandoval Curiel

Search and Discovery.com

... Overseas Company Saudi Aramco Abstract Seismic exploration in complex environments relies on accurate velocity model building (VMB), including...

2023

Upper Proterozoic Tidal Rhythmites, South Australia: Sedimentary Features, Deposition, and Implications for the Earth’s Paleorotation

George E. Williams

CSPG Special Publications

... mainly from suspension by tidal currents in response to periodic changes in the velocity and range of paleotides. Stratigraphic series of lamina...

1991

Seismic imaging uncertainty using deep learning predicted Greens functions

Han Liu, Anar Yusifov, Muhong Zhou, Linda Hodgson

International Meeting for Applied Geoscience and Energy (IMAGE)

... a novel method of producing ensembles of seismic images from ensembles of velocity models using a deep learning neural network. First, the neural networks...

2022

Unsupervised Machine Learning as a Velocity Picking Assistant

Charles Ursenbach, Hassan Odhwani

International Meeting for Applied Geoscience and Energy (IMAGE)

...Unsupervised Machine Learning as a Velocity Picking Assistant Charles Ursenbach, Hassan Odhwani Unsupervised machine learning as a velocity picking...

2023

Velocity model building for pressure and converted wave imaging using surface-DAS data: A North Sea case study

M. ElAttar, H. Malak, A. Cooke, O. Lewis, C. Thorgersen

International Meeting for Applied Geoscience and Energy (IMAGE)

...Velocity model building for pressure and converted wave imaging using surface-DAS data: A North Sea case study M. ElAttar, H. Malak, A. Cooke, O...

2024

Mainstream Mantle Convection: A Geologic Analysis of Plate Motion

T. H. Nelson , P. G. Temple

AAPG Bulletin

.... In the model, the base of the mainstream forms an unbroken spheroid with its poles of rotation near the earth's geographic poles. The maximum velocity...

1972

Seismic Exploration for Stratigraphic Traps: Geophysical Exploration Methods

Paul L. Lyons, M. B. Dobrin

AAPG Special Volumes

.... The objective is to trace the upper and lower boundaries of a reservoir bed to the point of convergence. If we assume that this bed is a high-velocity...

1972

High-resolution ultrasonic measurements as proxies to resolve clastic reservoir heterogeneity in a salt-cemented gas reservoir

Claudio Miro Filomena, Harald Stollhofen, Kees van Ojik

AAPG Bulletin

..., Formation velocity and density: The diagnostic basics for stratigraphic traps: Geophysics, v. 39, p. 770780, doi:10.1190/1.1440465.Gassmann, F., 1951, Uber...

2012

Deblurring migration images with point spread function filter

Cewen Liu, Nanxun Dai, Wei Wu, Xiaofeng Wu, Mingjie Guo, Haohuan Fu

International Meeting for Applied Geoscience and Energy (IMAGE)

... geometry, source wavelet, and background velocity model. The inversion of the reflectivity model m using the modeling data d could be mathematically...

2022

A Towed Streamer EM System Performance Case Study

Folke Engelmark, Allan McKay, Johan Mattsson

Indonesian Petroleum Association

... advantage of the fact that the signal only occupies discrete frequencies, whereas the stochastic noise is spread throughout the spectrum. Hence, between...

2013

Delineating Structural Timing

R. A. Nelson, T. L. Patton, S. Serra, and P. A. Bentham

Houston Geological Society Bulletin

... explorers of the spectrum of available approaches. Discussion of Structural Timing Techniques Techniques available to assess structural timing are broken...

1996

Recovering the invisible signals for urban traffic monitoring using distributed acoustic sensing

Yangkang Chen, Hang Wang, Rui Min, Yunfeng Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

... characterized by low-frequency energy (0-2 Hz) in the Fourier spectrum. We apply a low-pass filter to the raw data to highlight the car signals...

2024

Chapter 9: Microstructure and Anisotropy in Gas Shales

Carl H. Sondergeld, Chandra S. Rai, Mark E. Curtis

AAPG Special Volumes

... and calculated anisotropies display a pressure dependence that reflects difference in the microstructure studied. The Woodford samples show a weak velocity...

2013

Effective Fracture Geometry Analysis Based on Data of Well Production, Pressure Gauge, and Strain Change of HFTS-1-III in Eagle Ford Shale

Fatima Almarzoog, Kan Wu, Ge Jin

Unconventional Resources Technology Conference (URTEC)

... frequencies. The unique Rayleigh scattering URTeC 4034948 5 spectrum for each fiber section shifts in frequency when the temperature and strain...

2024

Seismic Expression of Low-Angle Clinoforms in Ancient Deltaic Systems: Implications for Stratigraphic Modelling; #20098 (2011)

German A. Gonzalez Uribe, Erwin Rieser, Martin Kornberger, Thomas Kuffner, Adrian Ballauri

Search and Discovery.com

... the western one seems to be tide-influenced. 2. These spectra are used to calculate an operator, which shapes the seismic spectrum to the well impedance...

2011

Past, Present and Future Advancements in Methods for Detecting Hydrocarbon Seepage after 75 Years, #41412 (2014).

John V. Fontana, David Seneshen

Search and Discovery.com

... Co., (now ExxonMobile)  Contended many geophysical highs were velocity anomalies from alteration and was opposed to using reflection siesmography...

2014

Late Lutetian 40AR/39AR Age Dating of a Mafic Intrusion into the Jafnayn Formation and its Tectonic Implications (Muscat, Oman); #51663 (2020)

Frank Mattern, Masafumi Sudo, Ivan Callegari, Bernhard Pracejus, Wilfried Bauer, Andreas Scharf

Search and Discovery.com

... pre-existing faults in the Arabian lithosphere Low Pn -velocity anomaly + + + + Figure 3. Contact of the basanite at the western upper outcrop...

2020

Seismic Lithology (AVO) Interpretation at the Badak and Nilam Fields in the Sanga Sanga Block, Kalimantan

William C. Ade, Ian T. McMahon, Wahyudin Suwarlan

Indonesian Petroleum Association

..., of their limited thickness and the lack of P-wave velocity contrast between the sands and the shales. In order to investigate whether sand could...

1988

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