New geological insights gained from the reprocessing, imaging, and interpretation of legacy seismic datasetsOffshore Mauritania

Kranthi Garidepalli, Elisabeth Gillbard, Simon Dean, Darren Judd, Nassim Kettouche, Paul Bellingham

International Meeting for Applied Geoscience and Energy (IMAGE)

... sediments and salt, and the interactions of the two. Velocity analysis of the Jurassic and Early Cretaceous structures shows them to be highly variable...

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...

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...

Seismic Foldout: FWI Imaging Under Complex Geological Anomalies

Adriana Citlali Ramirez, Simon Baldock, Stuart Fairhead, TGS

GEO ExPro Magazine

... of shallow collapsed mass transport complexes (MTCs) with a highly variable velocity structure cause Figure 3: Sleipner OBN for CCS (Carbon Capture...

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...

Robust phase-driven time warping FWI for salt reconstruction

Guanghui Huang, Alejandro Alcudia-León, Jaime Ramos-Martínez, Nizar Chemingu

International Meeting for Applied Geoscience and Energy (IMAGE)

... structures. Introduction FWI for reconstructing salt and geobodies with large velocity contrasts compared to surrounding sediments requires special...

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...

Characterization of a Carbonate Mudrock Reservoir by Integrating Sequence Stratigraphy, Sonic Velocity and Macro to Micropore Architecture

Search and Discovery.com

Automatic, Geological Layer-Constrained Seismic-Well Tie Through Blocked Dynamic Warping

Search and Discovery.com

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 Discovery.com

...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 Discovery.com

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

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...

An integrated workflow centered around elastic FWI for complex subsalt imaging using wide-azimuth data in the southern Gulf of Mexico

Hongyan Li, Riaz Alai, Nolan Brand, Frederico Xavier de Melo, Hugo Enrique Muñoz Cuenca, Wenmiao Liu, Iestyn Williams, Saeeda Hydal, Khaled Abdelaziz, Emmi Sanchez Vargas, Nik Nur Halim C Soh, M Shah B Sulaiman, Sandeep Kumar

International Meeting for Applied Geoscience and Energy (IMAGE)

... (EFWI) was employed to improve the subsalt velocity update. With the limitation of maximum offset and azimuth, a systematic workflow was proposed...

Effects of near Surface Lithology on Velocity Modelling and Time„Depth Relationships in the Cooper„Eromanga„Lake Eyre Basin

Anna Manka, Glen Buick, Rob Menpes, Luke Gardiner, Cameron Jones, Khalid Amrouch

Australian Petroleum Production & Exploration Association (APPEA) Journal

.... The velocities derived from the sonic log were highly variable through the formation, aside from an upper section which showed a consistent velocity profile...

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...

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...

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 Discovery.com

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

Interferometry derived S-wave velocity model with geological constrains for induced seismicity monitoring

Galina Simeonova, Dmitry Alexandrov, Toufik Chtouki, Petr Kolnsk, Leo Eisner, Tijmen Jan Moser, Umair Waheed, Sherif Hanafy, Barbara Cox

International Meeting for Applied Geoscience and Energy (IMAGE)

...Interferometry derived S-wave velocity model with geological constrains for induced seismicity monitoring Galina Simeonova, Dmitry Alexandrov, Toufik...

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...

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...

Diving wave tomography: Velocity modelling using first arrival traveltime

Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu

Geological Society of Malaysia (GSM)

...Diving wave tomography: Velocity modelling using first arrival traveltime Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu Bulletin...