Solving seismic inverse problems by an unsupervised hybrid machine-learning approach

Mrinal K. Sen, Arnab Dhara

International Meeting for Applied Geoscience and Energy (IMAGE)

... problem in that the inverse operator is rank-deficient. With careful choice of the regularization parameter, we are able to obtain an image shown...

Cross Correlation of Wire Line Data and SEM Based Mineralogical and Textural Vertical Well Data: A New Tool for Intelligent Completion Designs and Better Production Predictions.

Mark Mulkern, Chad Cunningham, Chi V. Ly, Graham Spence, Guy Oliver, John K. Flavin, Charlie Jackson, Sergio Centurion

Unconventional Resources Technology Conference (URTEC)

... and geophysical model; however, the resolution of seismic gathers is generally very coarse and lateral heterogeneities could be subseismic. There is also...

Demultiple for Wide-Tow Broadband Acquisition in a Shallow Water Environment: A Case Study from the NW Shelf, Australia

Mike Hartley, Shuo Ji, Alex Browne

Petroleum Exploration Society of Australia (PESA)

... then pick the water-bottom on the migrated image. If the water-bottom horizon is not complex it is often sufficiently accurate to pick...

Characterisation of focused gas hydrate accumulations from the Pegasus Basin, New Zealand, using high-resolution and conventional seismic data

Andrew R. Gorman, Patrick T. Fletcher, Dylan Baker, Douglas R.A Fraser, Gareth J. Crutchley, Stuart A. Henrys

Petroleum Exploration Society of Australia (PESA)

... and gas. Frequency content in the HKS02 and PEG09 datasets was determined by extracting frequency spectra from CMP gathers and testing bandpass...

An Integrated Approach to 3D Seismic Acquisition Feasibility Studies: Review of Present Techniques and Future Trends

Claude Bordenave, Frederic Merlet, Lotfi Ben Brahim, Nyoman Swatika

Indonesian Petroleum Association

... to image small faults or lateral termination of reflections. An example of a 3D shot point is displayed in Figure 4. Figure 3. 3D modeling by ray...

Imaging of multiwell and multifiber walkaway DAS-VSP datasets in a CCUS demonstration project onshore Japan

Yuji Yamada, Shotaro Nakayama, Takuji Mouri, Manish Lal Khaitan, Philip Armstrong, Olga Podgornova

International Meeting for Applied Geoscience and Energy (IMAGE)

... trajectories of Well-1 (cyan) and Well-2 (yellow). In Figure 4a, for this specific image, a dataset from Well-2 was used. Figure 4b shows a migrated...

Stabilizing two-term clock-drift inversion in ocean-bottom node processing

Beng Seong Ong, Zhaojun Liu, Carsten Udengaard

International Meeting for Applied Geoscience and Energy (IMAGE)

... jitters in the data. Removing such jitters is beneficial in obtaining a quality image. This process becomes even more crucial for 4D processing...

The impact of seismic nodes on enhancing subsurface imaging for mining „ A case study over the Tamarack Nickel field

Eamonn Murray, Andrew Stone, Celina Giersz, Amine Ourabah, Brian Bengert

International Meeting for Applied Geoscience and Energy (IMAGE)

... is not evident in the refraction tomography model (Figure 8). Simple depth-stretching of the seismic reflection stack image using the refraction tomography...

Detailed Oriented Seismic Processing Leads to More Accurate Elastic Attribute Results in the Delaware Basin

Marianne Rauch-Davies, Steve Smith, Alyona Bashkirtseva Hall

Unconventional Resources Technology Conference (URTEC)

..., the CDP gathers went through additional noise cancellation and multiple attenuation processes before angle stacks were generated. The data were zero...

A statistical method-based approach for frequency-varying residual phase detection and correction

Longxiang Han, Rongwei Xu, Chengliang Wu, Huazhong Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... on simulated data by applying different phase shifts to zero-phase wavelet at different frequencies. We obtained three simulated CIG (Common Image Gathers...

Self-parametrizing seismic data processing modules: An example on coherent noise suppression

Simone Re, Ran Bachrach, Massimo Clementi, Collin Wilson

International Meeting for Applied Geoscience and Energy (IMAGE)

... and interpretable final image. Historically, basic techniques for suppressing the noise exploit the signal-to-noise discrimination...

Automating the thresholding of multi-stage iterative source separation with priors using machine learning

Nam Pham, Rajiv Kumar, Sunil Manikani, Yousif Izzeldin Kamil Amin, Phillip Bilsby, Massimiliano Vassallo, Tao Zhao

International Meeting for Applied Geoscience and Energy (IMAGE)

... pursuit denoising. The technique is performed on the common receiver gathers. To stabilize the inversion, Kamil et al. (2021) and Kumar et al. (2023...

High Resolution Multichannel Seismic Profiling: A Case Study at Pak Pura, Bachok, Kelantan

Umar Bin Hamzah, Haryono, Abdul Rahim Samsudin, Abdul Ghani Rafek, Che Aziz Ali

Geological Society of Malaysia (GSM)

... years ago. The technique has recently been used to image shallow structures for application in environmental studies (Miller et al., 1994). This paper...

CRS-Stack and NIP-Wave Tomography Implemented to the SH-Wave Reflection Seismic Data for Shallow Hydrocarbon Prospecting (Paper P30)

M. R. Sule, A. A. Valencia, A. Hendriyana, U. Polom, C. M. Krawczyk

Geological Society of Malaysia (GSM)

... in order to obtain enhanced image of subsurface with the target improvement in reflector continuity and enhances signal-to-noise up to 1.2 s (shallow...

Simultaneous Sources: The Inaugural Full-Field, Marine Seismic Case History from Australia (Paper A2)

I. Moore, D. Monk, L. Hansen, C. Beasley

Geological Society of Malaysia (GSM)

... (using shot interpolation where necessary) by adding shot gathers to dithered versions of themselves. The separated data can then be compared...

Abstract: Recent Advances in Mapping Deep Permafrost and Gas Hydrate Occurrences using Industry Seismic Data, Richards Island Area, Northwest Territories, Canada; #90171 (2013)

Gilles Bellefleur

Search and Discovery.com

... in the 1970s. The 3D acquisition geometry was optimized to image conventional hydrocarbon accumulations located well beneath the depth of gas-hydrate...

Frequency-Domain Waveform Tomography in the Foothills: Velocity Model Estimation with Synthetic Long-Offset Data

Search and Discovery.com

... transformed by discrete Fourier transform to the time-domain. (a) (b) Figure 1: Long-offset shot gathers from (a) a real dataset collected...

Abstract: Recent Advances in Mapping Deep Permafrost and Gas Hydrate Occurrences using Industry Seismic Data, Richards Island Area, Northwest Territories, Canada; #90171 (2013)

Gilles Bellefleur

Search and Discovery.com

... in the 1970s. The 3D acquisition geometry was optimized to image conventional hydrocarbon accumulations located well beneath the depth of gas-hydrate...

Abstract: Full-Waveform Inversion of Field Data in the Foothills: Results and Challenges with Long-Offset Seismic; #90172 (2014)

Andrew J. Brenders, R. Gerhard Pratt, Sylvestre Charles

Search and Discovery.com

... a geologically complex area where ambiguity existed in the migrated image due to poor imaging conditions and data quality. Acquisition of Long-Offset, Low...

Abstracts: Seismic Attributes on Frequency-enhanced Seismic Data; #90173 (2015)

Satinder Chopra, Kurt J. Marfurt, Somanath Misra

Search and Discovery.com

... to model and remove multiples on NMO-corrected gathers using the multiple velocity. Examples of the application of structure oriented filtering...

Abstracts: FX Cadzow / SSA Random Noise Filter: Frequency Extension; #90173 (2015)

Alexander Falkovskiy, Elvis Floreani, Gerry Schlosser

Search and Discovery.com

... gathers. Here each is a complex Fourier coefficient for trace j from ensemble i. After matrix construction, rank reduction is performed using singular...

Incorporating Fault Intensity and AVO Inversion to Characterize a Shale Gas Reservoir; #41346 (2014)

Carl Reine and Sean Lovric

Search and Discovery.com

... and mapped (Figure 1). The same initial model and inversion parameters used for the above data are then applied to an inversion of gathers processed...

Seismic Anisotropy Modeling from Well Log in Talang Akar Formation, South Sumatra, Indonesia; #41360 (2014)

Thariq Guntoro, Intan Andriani Putri1, and Dwa Desa Warnana

Search and Discovery.com

... and delineated the seismic image. Based on the research by Alkhalifah, there are three anisotropic parameters epsilon (ε), delta (δ), and gamma (γ). Li (2006...

Staged Stochastic Inversion; #41720 (2015)

Arnaud Huck, Ayrat Sirazhiev, Richard Huis in’t Veld, Andries K.T. Wever, Claire Pierard

Search and Discovery.com

..., analyzed in 2-D gathers (such as Figure 1 and Figure 2) and verified against actual seismic. The ultimate product of this is the fully automated...

Integrated Multi-Disciplinary Approach to Predict Reservoir Performance: The Diyab Reservoir Abu Dhabi

Colleen Barton, Ghazal Izadi, John Tinnin, Santi Randazzo, Amir Ghadimipour, Yasmina Bouzida, Nicolas Leseur

Unconventional Resources Technology Conference (URTEC)

... supplied by ADNOC and utilized in this study included: 1) PSTM seismic data, 2) PSTM gathers with NMO correction, and 3) VSP data. The quality...