A Modeling Study for Imaging in Structurally Complex Media: Case History

Hesham Moubarak

Search and Discovery.com

... propagating in the complex medium and the most difficult structural styles to image were investigated. Eight locations in the model (see Figure 1) were...

Beam Migration for Imaging of Complex Structures

Karl Schleicher, John Sherwood, Lynn Comeaux, Mazin Farouki

Indonesian Petroleum Association

... structure. Downward continuation methods are able to handle multi-arrivals, but their inability to image steep dips is a severe limitation. We present...

Fit-for-Purpose Depth Imaging of Sub-Thrust and Strike-Slip Fault Regime Onshore Myanmar

Search and Discovery.com

Abstract: Comparing Post-stack AVO Inversion to Prestack Inversion for Estimating Rock Properties; #90171 (2013)

Paul F. Anderson

Search and Discovery.com

... prestack gathers are inverted for conventional AVO attributes (e.g. Rp & Rs from Fatti) which are then “post-stack inverted” for accoustic and shear...

Abstract: Comparing Post-stack AVO Inversion to Prestack Inversion for Estimating Rock Properties; #90171 (2013)

Paul F. Anderson

Search and Discovery.com

... prestack gathers are inverted for conventional AVO attributes (e.g. Rp & Rs from Fatti) which are then “post-stack inverted” for accoustic and shear...

Active Source Sparse Imaging Using Permanent SADAR Arrays

Derek Quigley, Paul A. Nyffenegger, Kevin D. Hutchenson, Jonathan Yelton

Carbon Capture, Utilization and Storage (CCUS)

..., 3) sorting into common receiver gathers of averaged shots to form a representative subsurface cross section, and 4) follow on image enhancement...

Towards more accurate reservoir imaging using FWI: An OBN case study at Trion

Zhen Wang, Sen Mei, Zhuocheng Yang, Joakim Blanch, Ezequiel Genova, Juan-Mauricio Florez-Nino, Humberto Salazar-Soto, Alfredo Vazquez-Cantu

International Meeting for Applied Geoscience and Energy (IMAGE)

... a step change in image quality. To this end, an ocean bottom node (OBN) acquisition was carried out in late 2020 to record fullazimuth and long...

Anisotropic full-azimuth velocity model building using joint reflection-refraction tomography

Matan Shustak, Itai Sharabi, Orly Kletenik-Edelman, Elive Menyoli, Ike Imala, Ronit Levy, Zvi Koren

International Meeting for Applied Geoscience and Energy (IMAGE)

... tomographic workflow with the conventional reflection-only tomographic solution, by analyzing the velocity volumes, image gathers, final images...

Unlocking the Potential of Conventional Narrow Azimuth Data by Full-Waveform Inversion: a Deep Carbonate Imaging Case Study, Offshore Indonesia

Jun Wang, Yonghe Guo, Putri Supriandini, Bahrul Yusrie, Natalia Anggriani

Indonesian Petroleum Association

... in both companies for the great efforts and valuable suggestions. REFERENCES Allemand, T., Sedova, A., and O. Hermant, 2017, Flattening common image gathers...

Seismic Velocity Anisotropy in Chimore Area, Bolivia

Michael Fry, Eloy Martinez, James Baker, Mark Wallace

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... that seismic velocity anisotropy might be adversely affecting the quality of the seismic image. Subsequent reprocessing work utilizing a full surface (non...

Orthorhombic Imaging for Orthogonal Wide Azimuth Surveys in Mississippi Canyon, Gulf of Mexico; #30391 (2014)

Yang He, Adam Gersztenkorn, Sherry Yang, Bin Wang

Search and Discovery.com

... and stratification, in general it improves image focusing in pre-stack depth imaging and provides flatter common image gathers (CIGs) for WAZ data. Recently...

AVA on communication cables: Principles and Examples from the North Sea

Ran Bachrach, Ali Sayed, Andrea Murineddu, Pilar Di Martino

International Meeting for Applied Geoscience and Energy (IMAGE)

...) gathers S-DAS Strain rate vs particle velocity: Definitions The interrogator used in the experiment generates strain rate data. To better understand...

Seismic Data Preconditioning for Improved Reservoir Characterization (Inversion and Fracture Analysis); #41347 (2014)

Darren Schmidt, Alicia Veronesi, Franck Delbecq, and Jeff Durand

Search and Discovery.com

.... Image quality was also improved through temporal alignment of signal events in the gathers through VTI corrections, and subsequent application of trim...

Application of wave-equation reflection traveltime inversion to the Liwan deep-water streamer data in the South China Sea

Yilin Wang, Liangguo Dong, Chao Huang, Jianming Zhang, Yuzhu Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

...ly in the deep part of the model). From the image gathers corresponding to the initial model (Figure 6a), it can also be observed that the image gathe...

GeoMind: An intelligent earth model building tool

Saleh Al Saleh, Ewenet Gashawbeza, Mustafa Marzooq, Hussam Banaja, Husain Al Shakhs, Jianwu Jiao

International Meeting for Applied Geoscience and Energy (IMAGE)

... geological model to generate the raw shot gathers of 10,000 seismic datasets. GeoMind used these pairs of geological and geophysical models to train...

High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration

Jidong Yang, Jianping Huang, Tengfei Lin, Zhenchun Li, and Liang Chen

AAPG Bulletin

... a coherent stacking to implement constructive summation for angle-domain common-image gathers. The new LSM scheme enables us to reduce the artifacts...

Least Square Q-Kirchhoff Migration: Implementation and Application

Xiaodong Wu, Yi Xie, Joe Zhou, Dechun Lin, Yu Wang

Petroleum Exploration Society of Australia (PESA)

... and sparse constraint in image domain is built into our inversion process to reduce migration artefacts and improve both common image gathers and the stack...

Abstract: Improving the Statics Solution through De-migration: A Canadian Foothills A-PSDM Case History; #90172 (2014)

Jiwu Lin, Sylvestre Charles, Josef Heim

Search and Discovery.com

... (CIP) gathers and converged to a final velocity model faster (Figure 3). With the new statics solution, the new depth image (Figure 3) clearly shows...

Fault Shadow Issues and Resolution in Model and Real Data

Andrew J. Davidoff, Ika Ratna Novianti

Indonesian Petroleum Association

... gathers. This clearly gives a better image. The shadow effect is completely removed from the data and the fault plane is well imaged. Normal incidence ray...

Abstract: Maximize the Potential of Seismic Data in Shale Exploration and Production … Examples from the Barnett Shale and the Eagle Ford Shale; #90187 (2014)

Joanne Wang and Duane Dopkin

Search and Discovery.com

... Ravve, 2011. Full-azimuth subsurface angle domain wavefield decomposition and imaging Part 1: Directional and reflection image gathers, GEOPHYSICS...

A Southern North Sea Multi-Survey preSDM using Hybrid Gridded Tomography, #41592 (2015).

Ian Jones, Emma Evans, Darren Judd, Alan Campbell, Steve Elam

Search and Discovery.com

... employed dense continuous automatic picking of residual moveout in CRP gathers at each iteration, based on plane-wave destructors, followed by gridded...

DAS noise attenuation using wavelet stack

Zhou Yu, Zhaojun Liu, Ge Zhan, Peng Cheng, Bin Wang, Weihong Fei

International Meeting for Applied Geoscience and Energy (IMAGE)

... and adaptive to noise variation. Nonlinear stack combines two denoised gathers in the CWT domain in a predictable way for further SNR uplift without loss...

Low-frequency data reconstruction for full-waveform inversion

Ramzi Djebbi, Maiza Bekara, Jaime Ramos-Martinez, Nizar Chemingui

International Meeting for Applied Geoscience and Energy (IMAGE)

.... (a) water setting acquired with multi-sensor technology in offshore Angola, with a maximum 8 km inline offset. Figure 2-a shows two shot gathers at 1-3...

Seismic Diffraction Imaging of Reservoir Fractures with DAS Seismic Data in a Horizontal Well

Brian Fuller

Unconventional Resources Technology Conference (URTEC)

... into images of faults (Yilmaz, 1987). Seismic data recorded at the earth’s surface has also been used to successfully image fractures and dike systems using...

Noise Attenuation Challenges for Combined OBC, Transition and Land Seismic Survey

Valarie Hamilton, Merrie-Ellen Gunning

Petroleum Exploration Society of Australia (PESA)

.... to bett er image the ta rget. This art icle looks at how eac h of these process ing challenges was ad dressed. The acqu isition confi g uratio n...