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The AAPG/Datapages Combined Publications Database

Showing 27,461 Results. Searched 190,740 documents.

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Adjustments of Velocity Logs to Tie Geophone Surveys

Warren Hicks

Oklahoma City Geological Society

... the results of some of these surveys sound bad, but % is a variable itself. We're doing a lot of core hole velocity logging, and comparing it with delta...


Structure Interpretation Problems of a Lower Miocene Reef Associated with a Shallow Low Velocity Anomaly, North Sumatra

Peter Walker, Masrizal Maas, Michael D. Burnaman

Indonesian Petroleum Association

...Structure Interpretation Problems of a Lower Miocene Reef Associated with a Shallow Low Velocity Anomaly, North Sumatra Peter Walker, Masrizal Maas...




Montana Geological Society

... surface velocity assumptions during the course of a survey. Velocities in the "weathering" zone are extremely variable in places...


Understanding The Mesozoics Beyond Basalt: A Case Study Of Sub-Basalt Imaging

S. Sengupta, S. K. Goswami, G. Menzel-Jones, B. Chowdhury, Artem Sazykin

Indonesian Petroleum Association

.... * WesternGeco • Low signal-to-noise ratio creating ambiguity in estimating accurate velocity model of subsurface. This case study demonstrates...


Quantification of pore structure and its effect on sonic velocity and permeability in carbonates

Ralf J. Weger, Gregor P. Eberli, Gregor T. Baechle, Jose L. Massaferro, Yue-Feng Sun

AAPG Bulletin

...Quantification of pore structure and its effect on sonic velocity and permeability in carbonates Ralf J. Weger, Gregor P. Eberli, Gregor T. Baechle...


Pore-Pressure Prediction in the Permian Basin Using Seismic Prestack Inversion

Colin Sayers, Lennert den Boer

Unconventional Resources Technology Conference (URTEC)

... to that of velocity. We present an approach for predicting pore pressure based on P-impedance and the ratio VP / VS of the vertical P-velocity, VP, to vertical...


Deep neural networks for 1D impedance inversion

Vladimir Puzyrev, Anton Egorov, Anastasia Pirogova, Chris Elders, Claus Otto

Petroleum Exploration Society of Australia (PESA)

... (PESA) 1 Deep neural networks for 1D impedance inversion discovered that more realistic models such as the 160-layer velocity model with variable...


Prediction and Analysis of Geomechanical Properties of the Upper Bakken Shale Using Artificial Intelligence and Data Mining

George K. Parapuram, Mehdi Mokhtari, Jalel Ben Hmida

Unconventional Resources Technology Conference (URTEC)

... velocity is first predicted by linear methods and neural networks. Shear wave velocity is crucial in making reliable calculations, especially...


Full waveform inversion of simultaneous long-offset data

Nizar Chemingui, Alejandro A. Valenciano, Andrew Long

Petroleum Exploration Society of Australia (PESA)

... Perth, WA, 6005, Australia [email protected] SUMMARY The standard workflow for velocity model building (VMB) in complex regimes is an interpretive...


Statistical Mitigation of Depth Structure Uncertainty Using Multiple Realizations for the Ujung Pangkah Field

Donald Easley, Ferry Yustiana, Willy Brianno

Indonesian Petroleum Association

... predictions. However, there are still areas with uncertainty due to lack of well velocity information. The second major variable is the velocity field...


Application of Seismic Surveying to Direct Exploration for Oil and Gas

A. M. Ivanchuk, L. F. Tarkhova

Petroleum Geology: A Digest of Russian Literature

... and velocity of propagation of waves and density of rocks in comparison with actual time sections obtained with variable frequency analysis. Prognostic...


Abstract: Detailed structure of a magma-poor continent-ocean transition offshore northeastern Nova Scotia, Canada based on an along-strike wide-angle seismic profile (OCTOPUS)

K. W. Helen Lau, Mladen R. Nedimović, Keith E. Louden

Atlantic Geology

... section resulted in a detailed P-wave velocity model. This model shows a mostly laterally uniform sedimentary section except for the Valanginian...


ABSTRACT Shear-Wave Velocity Anomalies and High Vp/Vs Ratios at Shallow Depths Below a Distressed Artificial Levee Marrero Louisiana USA, #90104 (2010)

Lorenzo Juan M.; Hicks Jason; Vera Emilio E.

Search and

...ABSTRACT Shear-Wave Velocity Anomalies and High Vp/Vs Ratios at Shallow Depths Below a Distressed Artificial Levee Marrero Louisiana USA, #90104...


Abstract: Subsalt Seismic Modeling and Illumination Analysis in Red Sea Transition Zone; #90254 (2016)

Ewenet Gashawbeza, Hongwei Liu, Saleh AL-Saleh

Search and

... velocity field, acquisition geometry, and a high fidelity algorithm. In this study, two modeling techniques were used: (1) ray-based that is fast...


Structural and Tectonic Evolution of Oceanic Crust within the Jurassic Quiet Zone, Offshore Morocco: Chapter 14: African and Mediterranean Margins

James S. Holik, Philip D. Rabinowitz

AAPG Special Volumes

... velocity spectra analysis define a velocity inversion between the UCF (4.7 km/sec) and the underlying sediments (3.1 km/sec). A deep crustal layer...


Synthetic Seismograms from Vibracores: A Case Study in Correlating the Late Quaternary Seismic Stratigraphy of the New Jersey Inner Continental Shelf

Dominic Esker , Robert E. Sheridan , Gall M. Ashley , Jeffrey S. Waldner , David W. Hall

Journal of Sedimentary Research (SEPM)

..., we use median grain size as the primary independent variable for calculating acoustic properties (proxy for density and velocity) in siliciclastic...


How distinctive are flood-triggered turbidity currents?

Catharina J. Heerema, Matthieu J.B. Cartigny, Ricardo Silva Jacinto, Stephen M. Simmons, Ronan Apprioual, Peter J. Talling

Journal of Sedimentary Research (SEPM)

... to identify river-flood-triggered turbidite deposits, which are largely based on the assumption that a characteristic velocity structure of the flood...


Diffusion and Settling of Sediments at River Mouths: A Computer Simulation Model

G. F. Bonham-Carter, Alex J. Sutherland

GCAGS Transactions

... the velocity field and the rates of sediment diffusion. By adjusting the input parameters, a variety of "delta" deposits may be created. The shape...


Geophysical Log Responses to Variatons in Lithology in Borings Clino and Unda, Great Bahama Bank

E. Robert Warzeski, Leslie A. Melim, Robert N. Ginsburg

Special Publications of SEPM

... The reef has much higher and more water variable density and sonic velocity Some of the peaks coincide available for the upper 200 m of Clino...


A Phase Diagram for Turbulent, Transitional, and Laminar Clay Suspension Flows

Jaco H. Baas, James L. Best, Jeffrey Peakall, Mi Wang

Journal of Sedimentary Research (SEPM)

... (approximated by the horizontal components of flow velocity and turbulence intensity) and cohesive forces (approximated by the suspended clay...


Xu and White Revisited (Paper C8)

M. Sams, T. J. Focht, N. Azuairi Che Sidik

Geological Society of Malaysia (GSM)

...-plots of measured S-velocity versus modelled S-velocity using (a) fixed aspect ratio for quartz and clay and (b) variable aspect ratio for total...


Pore Pressure Modeling Using Multivariate Geostatistics, #42299 (2018).

Flavia Braz Ponte, Francisco Fabio de Araujo Ponte, Adalberto da Silva, Alberto Garcia de Figueiredo Jr.,

Search and

... information from wells as predicted variable as well as a pore pressure volume estimated from seismic interval velocity, as secondary information...


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