Seismic Foldout: FWI Imaging Under Complex Geological Anomalies

Adriana Citlali Ramirez, Simon Baldock, Stuart Fairhead, TGS

GEO ExPro Magazine

... applied) from 2010 verlaid with the tomography-based velocity model from 2010 (the mass transit complexes in the shallow section generate signal...

Potential of FWI imaging for shallow turbidite shadow zone: A case study

Swarup Sarkar, James Sheng, Faqi Liu, Daniel Davies, Roy Ha

International Meeting for Applied Geoscience and Energy (IMAGE)

...-quality seismic image depends on many factors related to acquisition parameters, pre-processing technologies, accuracy of the velocity and anisotropy...

Seeing through the Salt

Jerry Kapoor, Nick Moldoveanu, Denes Vigh

GCAGS Transactions

... dataset bring new challenges for velocity model building and imaging. The first challenge comes from how we can fully exploit the extra information from...

Full Waveform Acoustic Logging: Part 7. Geophysical Methods

C. H. Cheng

AAPG Special Volumes

... the lithology and the fluid content of the formation. Stoneley wave velocity and amplitude have been shown to be useful in the detection of fractures...

SG14: The COCORP Seismic Reflection Traverse Across the Southern Appalachians - Data Acquisition and Processing

Frederick A. Cook, Larry D. Brown, Sidney Kaufman, and Jack E. Oliver

AAPG Special Volumes

..., automatic static corrections, velocity analyses (normal moveout correction for increasing source to receiver distances), summing (stacking) of the moveout...

Deep Structure of Northern Mississippi Embayment

A. Ginzburg , W. D. Mooney , A. W. Walter , W. J. Lutter , J. H. Healy

AAPG Bulletin

... (9,843-ft) thick low-velocity layer which probably consists of late Precambrian clastics. The presence of this low-velocity layer is indicated...

Abstract: The Role of Microbial Activity on Petrophysical Properties; #90153 (2012)

Gregor P. Eberli, Klaas Verwer, Giovanna Della Porta, Ralf J. Weger

Search and Discovery.com

... deposits. As a result, microbialites are petrophysically characterized by high porosity and high velocity, although the pore types in microbialites...

Velocity of P- and S-Waves in Arab-D and WCSB Carbonates

Search and Discovery.com

...Velocity of P- and S-Waves in Arab-D and WCSB Carbonates Velocity of P- and S-Waves in Arab-D and WCSB Carbonates Aiman Bakhorji* University...

PSDM for Unconventional Reservoirs? A Niobrara Shale Case Study; #80392 (2014)

Morgan P. Brown

Search and Discovery.com

... positioned view of faulting. Additionally, in areas that exhibit velocity complexity, seismic anisotropy, and dipping beds, PSDM can provide more...

Controls on Turbidity Current Flow Modes: New Insights from Direct Measurements Worldwide; #30574 (2018)

Daniela Vendettuoli, Michael Clare, Peter Talling, Matthieu Cartigny, Maria Azpiroz-Zabala, Sophie Hage, Esther Sumner, J. Wood, C. Cooper

Search and Discovery.com

... commonalities in flow mode exist, independent of location, thickness, velocity and duration. Normalised time-velocity plots reveal three distinct flow...

Bed Configurations in Steady Unidirectional Water Flows. Part 2. Synthesis of Flume Data

John B. Southard, Lawrence A. Boguchwal

Journal of Sedimentary Research (SEPM)

.... (September), Data from 39 flume studies that report equilibrium bed configuration as well as water temperature, flow depth, flow velocity...

Synthetic time-lapse FWI analysis for designing cross well seismic survey during CO2 injection in a depleted oil field

Toru Taira, Takuji Mouri, Ayato Kato, Yusaku Konishi, Takashi Akai, Shotaro Nakayama

International Meeting for Applied Geoscience and Energy (IMAGE)

... the feasibility. In this field, the P-wave velocity reduction associated with CO2 injection was predicted to be as small as 3.2% in the most likely case. Despite...

Imaging Seismic Data with High Resolution Gravity Data.

R. Opfer

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... required a time or static correction to remove the effect of elevation and time distortions caused by velocity variations in the near surface geology...

Combined OBN and high-resolution 3D streamer acquisition for CO2 monitoring: Initial model building and imaging results over Sleipner

Simon Stokes, Sandrine David, Eddie Cho, Dhiman Mondal, Graeme Stock, Simon Baldock

International Meeting for Applied Geoscience and Energy (IMAGE)

..., including the CO2 plume, while the OBN data provides long-offsets for velocity model estimation using FWI. The results demonstrate the potential...

Improvement of Seismic Tomographic Imaging by Downward Continuation and Modified SIRT

Teuku A. Sanny, D. Santoso, D. Dahrin, Fatkhan, Alfian B.

Indonesian Petroleum Association

... 411 419 There were some problems with seismic tomographic reconstruction when the Low Velocity Layer (LVL) exists at the top of the investigation...

Abstract: Feasibility Testing of Time-lapse Seismic Monitoring with Full Waveform Tomography; #90171 (2013)

Chad Hogan, Ken Hedlin, Gary Margrave, and Michael Lamoureux

Search and Discovery.com

..., University of Calgary Summary Full waveform tomography reveals subtle sub-wavelength perturbations in the velocity model, given a sufficiently...

Abstract: Estimation of Q-factor and Phase Velocity Using the Recovered Stress-strain Relaxation Spectrum; #90172 (2014)

Dali Zhang, Michael P. Lamoureux, Gary F. Margrave

Search and Discovery.com

...Abstract: Estimation of Q-factor and Phase Velocity Using the Recovered Stress-strain Relaxation Spectrum; #90172 (2014) Dali Zhang, Michael P...

Abstract: Application of Acoustic Waveform Tomography to Marine Seismic Reflection Data Contaminated with Strong Guided Waves; #90187 (2014)

Rajesh Vayavur and Andrew. J. Calvert

Search and Discovery.com

... which are highly dispersive in nature. We show that, it was possible to obtain a reasonable P-wave velocity model by careful preconditioning of the data...

Abstracts: Application of CSP Gather Modeling for Determination of Velocity Smoothing Operator for Prestack Kirchhoff Depth Migration; #90173 (2015)

Hassan Khaniani and John C. Bancroft

Search and Discovery.com

...Abstracts: Application of CSP Gather Modeling for Determination of Velocity Smoothing Operator for Prestack Kirchhoff Depth Migration; #90173 (2015...

Mapping Stratigraphic Traps with Seislog

Roy O. Lindseth

Indonesian Petroleum Association

... is a direct measure of the continuously changing velocity within the section, while the seismic trace is measuring the ratio of change of the very same...

Improving subsalt images using FWI and FWI imaging: A streamer case study at Big Foot

Weihong Fei, Jingru Chen, Min Yang, Leah Grassi, Erik Everson, Paul Bovet, Marin Laomana, Sheree Wold, Alex Yanjun Hao, Chi Chen, Shubin Zeng, Zhiyuan Wei

International Meeting for Applied Geoscience and Energy (IMAGE)

... below the Big Foot salt and nearby Sigsbee salt remain challenging after several rounds of velocity model building and imaging efforts in the last few...

RNN-based seismic velocity model building: Improving generalization using hybrid training data

Hani Alzahrani, Jeffrey Shragge

International Meeting for Applied Geoscience and Energy (IMAGE)

...RNN-based seismic velocity model building: Improving generalization using hybrid training data Hani Alzahrani, Jeffrey Shragge RNN-based Seismic...

Velocity Anomalies and Out-of-Plane Reflections in Barnicarndy 1, Canning Basin

Y. Zhan

Australian Petroleum Production & Exploration Association (APPEA) Journal

...Velocity Anomalies and Out-of-Plane Reflections in Barnicarndy 1, Canning Basin Y. Zhan The APPEA Journal 2021, 61, 271–290 Peer reviewed paper...

Settling of Spheres

Gerard Middleton, John B. Southard

Special Publications of SEPM

..., it accelerates in response to the force of gravity, but as its velocity increases, the oppositely directed drag force exerted by the fluid grows until...

Structural and time-lapse imaging through gas clouds via FWI at Eldfisk field, North Sea

Zhengxue Li, Leila Bencherif-Soerensen, Per Gunnar Folstad, Brian Macy, Simon Shaw, Baishali Roy

International Meeting for Applied Geoscience and Energy (IMAGE)

... in these areas. Starting with a legacy velocity model, FWI is used as the main tool for model building, capturing detailed velocity changes associated...