Know Before You Go!

Lars Zühlsdorff, Trond Haugland

GEO ExPro Magazine

... shot and a single receiver line as compared to the reflection point distribution on the target (‘hit map’), B: simulated migration amplitude along...

Improved 3D Seismic Imaging through Depth Migration and Tomography: An Indonesia Case Study

Jianli Song, Cristina Reta-Tang, Xuening Ma, Jim Wilhite, Laurie Geiger

Petroleum Exploration Society of Australia (PESA)

... velocity model and inserting wat er velocity. The water velocity was determined using COP gathers from both shallow and deep water areas. Water depths range...

Seismic Qualitative and Quantitative Analysis for Reservoir Characterization of Globigerina BH Gas Field, North East Java Basin.

Indra Sumantri, Okky Yuditya Pahlevi, Hendra Himawan, Vickry Rowi, Kian Han

Indonesian Petroleum Association

.... This is the only exploration well drilled in this field and located on the crest of the structure. Seismic analysis both qualitative and quantitative, are common...

Abstract: Improving the Image: 5D Interpolation and COV Gathering of a MegaBin’ Survey; #90171 (2013)

Darren P. Schmidt, David Gray, Xinxiang Li, Daniel Trad, and Jon Downton

Search and Discovery.com

... (PreSTM) using COV’s is tested with these data, the idea being that the gathers output from PreSTM should also be suitable for azimuthal analysis. Here...

Abstract: Salt Shape Tomography; #90254 (2016)

Patrice Guillaume, Olivier Hermant, Stanislaw Warzocha

Search and Discovery.com

... contrasts on depth-migrated common image point gathers. In the multi-layer approach, the sharp velocity contrasts are introduced as layer boundaries. Using...

Applications of near-field hydrophone data imaging in a shallow water environment: A case study from offshore Egypt

Mahmoud El-Attar, Omar Hossam, Azat Kireev, Arindam Kanrar, Usama Fathy Abdel-Kader, Kai Zhang, Jacob Deeds, Jordan Hassler

International Meeting for Applied Geoscience and Energy (IMAGE)

...). A near-surface velocity model was estimated as part of the earth model building workflow using full-waveform inversion (FWI) using the streamer data...

Research and application of diffraction imaging based on the full-azimuth angle migration

Shengtao Zang, Xingrong Xu, Zhe Yang, Yanxiang Wang, Jiaqing Sun

International Meeting for Applied Geoscience and Energy (IMAGE)

... imaging point. The generated fullazimuth directional gathers contain the angle information of different directions, and diffraction weighted factor...

Seismic Imaging Improvements in the Bolivian Fold-and-Thrust Belt Through Psdm

A. Rocha, J. Subia

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

..., the tools available to refine velocities, such as grid tomography, horizon tomography and CRP gathers residual velocity analysis (even taking...

A Regional Velocity Cube for Depth Conversion on the Northwest Shelf

Maighréad Ní Dheasúna, Mark Ballesteros, James Leven

Petroleum Exploration Society of Australia (PESA)

... in the by wel ls, and in particular, check shot data. Seismic's mu lti-client products. In tota l, over 2.4 million velocity analysis points (VPs), from...

ABSTRACT: 3D Pre-Stack Depth Migration of a Land Survey with Considerable Multiple Interference - A Case History; #90051 (2006)

Frederick Kierulf, Adam Fox, Luke F. LaFreniere

Search and Discovery.com

... fold common mid-point gathers. The application of this method on common image gathers proved to be effective in improving the velocity model updating...

3D Pre-Stack Depth Migration of a Land Survey with Considerable Multiple Interference - A Case History

Search and Discovery.com

Multi-conditional seismic velocity synthesis using an autoregressive transformer network

Randy Harsuko, Shijun Cheng, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

...Multi-conditional seismic velocity synthesis using an autoregressive transformer network Randy Harsuko, Shijun Cheng, Tariq Alkhalifah Multi...

Abstract: Seismic Imaging and Velocity Modelling Offshore Myanmar (Andaman Sea Basin) (Geophysics Poster 12)

Farhan Ahmed Khan, M Hakimey Hashim, Azlan Mohd Sabirin, Goh Leong Kee, Garry Malo Paul

Geological Society of Malaysia (GSM)

... of Pre-Stack Time Migrated Gathers require detail and precise technical analysis. The testing of 2D seismic line no. A, Offshore Myanmar, Andaman Sea...

Abstract: Converted-Wave Prestack Time Migration with a New Approximate Migration Weight; #90224 (2015)

Chuck Ursenbach and Peter Cary

Search and Discovery.com

... to receiver, it assumes that the total traveltime is partitioned in a way consistent with common-conversion point reflection. The described...

Extended Abstract: Advances in Interpretation & Imaging

P. Beale

Southeast Asia Petroleum Exploration Society (SEAPEX)

... Projects Scan seismic cube for main velocity breaks (Figs 1 and 2) – Direct Seismic Volume Interpretation using Voxel-based software tools to greatly speed...

Lateral Changes in Seismic Velocities and Their Effect on Depth Prediction

J. Pinchin, M. Bayly

Petroleum Exploration Society of Australia (PESA)

.... by ray tracing to each model. These were then sorted into offset-dependant gathers and velocity analysis was carried out by means of both conventional...

Case History: Rulison Field, Colorado, Fracture Detection, Mapping, and Analysis of a Naturally Fractured Gas Reservoir Using P-wave Reflection Seismic

Heloise B. Lynn, K. Michele Simon, Vello Kuuskraa, Dave Decker

Four Corners Geological Society

...Case History: Rulison Field, Colorado, Fracture Detection, Mapping, and Analysis of a Naturally Fractured Gas Reservoir Using P-wave Reflection...

Wave Equation Shot Migration as a Ground Roll Filter.

Francisco Ortigosa, Pedro Muñoz

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... be explained by looking the behavior of a straight line in the FK plane during Migration. During migration every point (f,k) in the FK plane is moved...

Sparse ocean-bottom node seismic interferometry and inversion: A Gulf of Mexico study

Ivan Lim Chen Ning, Justin Tan, Ranjan Dash

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the 𝑓-𝑥 domain to half the spacing for stable dispersion analysis. We adopt the model-based surface wave modal inversion (SWAMI) method in the velocity...

Effect of near offset seismic data in shallow subsurface modeling using full-waveform inversion

Md Iftekhar Alam, Salman Abbasi

International Meeting for Applied Geoscience and Energy (IMAGE)

... of near offset data and variation of velocity gradient in seismic modeling for shallow subsurface investigation using full waveform inversion...

Practical considerations for computing the kernels of reflection-based full-waveform inversion

Houzhu (James) Zhang, Hong Liang, Hongwei Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... procedures for pre-processing and post-processing steps in RFWI. • Compute the common image gathers from input data pobs ( t , x r ) based v0 ( x ) on using...

Addressing the complex near-surface challenges in the Delaware basin through recent FWI advancements

Ali Mohamed, Dmitry Kulakov, Daniel Suren, Wilfrid Milan, Larry Holifield, Vasudhaven Sudhakar

International Meeting for Applied Geoscience and Energy (IMAGE)

...-velocity model updated using Refraction FWI demonstrated significant improvements in the consistency of imaging and accurate positioning of seismic...

Abstract: Full Waveform Inversion Algorithm using Time Imaging Methods; #90174 (2014)

Hassan Khaniani, John C. Bancroft, Gary F. Margrave, and Eric von Lunen

Search and Discovery.com

.... The advantage of using EOM is the starting velocity in update procedures that are obtained from the Common Scatter Point gathers. We showed a P-P...

Seismic Image Enhancement of the Banyu Urip Carbonate Buildup, Cepu KKS, With Effective Data Denoise and Q-Compensated PSDM

Gene Skeith, Peter Traynin, J. M. Reilly, Mike Rainwater, Parada Devy Silitonga

Indonesian Petroleum Association

... estimated using PSDM migrated gathers. Inside the carbonate buildup, gather quality was so poor that a velocity scanning technique was used...

Least-squares reverse time migration: Lessons learned from recent applications in challenging areas of the Santos Basin, Brazil

Jos Rodrigues, Felipe Duarte, Danilo Domingos, Bruno Pereira-Dias, Elionardo Pintas

International Meeting for Applied Geoscience and Energy (IMAGE)

... aspect of the image domain approach is its convenience to be applied in the pre-stack version (common image gathers). In this version, the correction...