Least-squares non-stationary triangle smoothing

Reem F. Alomar, Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

... triangle smoothing against a select set of non-linear smoothing filters for a time horizon with added uniform noise of mean zero and range equal to 15 ms...

A simultaneous wavefield separation and denoising approach for vertical seismic profile using geometric mode decomposition

Salman Abbasi, Jubran Akram, Andres Chavarria, Vikram Jayaram, Iftekhar Alam, Dmitry Borisov, Yanwei Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... separates VSP events from the background noise. Since GMD-F finds linear patterns within different frequency bands, its decomposition can also...

Pre-drill Reservoir Evaluation Using Passive Seismic Imaging

Charles Sicking, Jan Vermilye, Ashley Yaner

Unconventional Resources Technology Conference (URTEC)

... noise in the field data is required for valid testing of the method because reflectivity noise and coherent surface wave noise dominate passive data...

Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)

Yoones Vaezi and Mirko van der Baan

Search and Discovery.com

... experiments refers to a technique for reconstructing coherent part of noise, which is deeply buried into local seemingly incoherent noise, propagating...

Unsupervised multi-stage deep learning network for seismic data denoising

Omar M. Saad, Matteo Ravasi, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

.... INTRODUCTION Seismic data commonly face challenges from both coherent and incoherent noise. Incoherent noise, typically known as random noise, stems from...

Deep learning approach for denoising and resolution enhancement of poststack seismic data

Ruslan Malikov, Tatyana Yusubova, Izat Shahsenov

International Meeting for Applied Geoscience and Energy (IMAGE)

... post-pressing steeply dipping linear noise/aliasing, concentrated along the continuous true reflectors or residuals from demultiple stage. While minor...

Abstracts: What Receivers will we use for Low Frequencies?; #90173 (2015)

R. Malcolm Lansley and Peter Maxwell

Search and Discovery.com

... frequencies. Low-dwell, non-linear sweeps and pseudorandom sweeps have been developed by a number of companies to increase vibrator output at low...

Improving subsalt imaging using mode-converted waves and volumetric coherent noise attenuation in southern Gulf of Mexico

Riaz Alai, Nik Nur Halim C. Soh, M Shah B. Sulaiman, M. Iqbal Supardy, Kien Kok Lee, Sandeep Kumar, Syazwani Bt Suhairi, Christian Brinzer, Frederico Xavier de Melo, Hongyan Li, Iestyn Williams, Hugo Enrique Munoz Cuenca, Nolan Brand, Kate Glaccum, George Zhao, Saeeda Hydal, Khaled Abdelaziz, Emmi Sanchez Vargas

International Meeting for Applied Geoscience and Energy (IMAGE)

...Improving subsalt imaging using mode-converted waves and volumetric coherent noise attenuation in southern Gulf of Mexico Riaz Alai, Nik Nur Halim C...

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 seismic processing included a special refraction statics solution that reduced the static error in this difficult area to a minimum. Noise attenuation...

New Solutions to Old Problems: A Seismic Reprocessing Case History, DC and BQ Fields, Malacca Strait PSC

Charles A. Hinson

Indonesian Petroleum Association

... representation of a seismic line transformed into the f-k domain. All linear events on the seismic line, both signal and coherent noise...

Phase pilot recovery: A foundation for mitigating speckle scattering noise in seismic data

Akshika Rohatgi, Andrey Bakulin, Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

..., residual statics introduce linear phase shifts proportional to a constant time delay 𝜏! for each trace. We emphasize that both types of noise solely...

Seismic speckle as multiplicative noise explaining land reflections distorted by near-surface scattering

Andrey Bakulin, Dmitry Neklyudov, Ilya Silvestrov

International Meeting for Applied Geoscience and Energy (IMAGE)

... be represented as 𝑟 𝑡 ∗ 𝑠 𝑡 𝑛 𝑡 , (1) 𝑥 𝑡 where 𝑠 𝑡 is the desired signal, 𝑟 𝑡 is multiplicative noise defined as a linear system described...

Abstract: Uncertainty in Surface Microseismic Monitoring, by Mueller, Michael C. and Thornton, Michael; #90166 (2013)

Search and Discovery.com

What is Horizontal Resolution?: ABSTRACT

L. R. Denham, R. E. Sheriff

AAPG Bulletin

.... In practice, the horizontal resolution is limited by uncertainties in velocity, inadequate spatial sampling, and presence of coherent noise, as well...

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

... statics. Coherent noise was reduced by using a highresolution Radon transform to attenuate linear and parabolic multiple energy, while random noise...

Hourly Immersed Acquisition and Processing of Magnetotelluric Method for Noise Reduction

Alida Naufalia Aribah, Ikhsan Setyawan, Hidayat

Indonesian Petroleum Association

...Hourly Immersed Acquisition and Processing of Magnetotelluric Method for Noise Reduction Alida Naufalia Aribah, Ikhsan Setyawan, Hidayat IPA18-477-SG...

Seismic data denoising by combining self-supervised and supervised learning

Yen Sun, Paul Williamson

International Meeting for Applied Geoscience and Energy (IMAGE)

... removal. However, in most applications, the proposed method targets one or other of coherent or incoherent noise. In this study, we propose a workflow...

Abstract: Point Receiver Acquisition and Processing for Arctic Near Surface Challenges; #90171 (2013)

C. Strobbia, A.Glushchenko, A. Laake, P.L.Vermeer, S. Papworth, and Y. Ji

Search and Discovery.com

... of coherent noise. Introduction Land seismic exploration in arctic regions, besides the logistic issues, can be challenging because of the great complexity...

Abstract: Application of a Tomographic Velocity Model to the Prestack Depth Migration of a Buried Valley; #90172 (2014)

Oluwafemi Ogunsuyi, Douglas R. Schmitt

Search and Discovery.com

... and reflected events. The seismic reflection data was processed in a sequence optimized to suppress noise (steps include radial and linear τ–p processing...

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

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

Abstract: Ground Roll Noise Attenuation Using the Analytical Mode Decomposition; #90255 (2017)

Ahmed Zegadi, Khalil Kheir-eddine, Leila Naili Douaouda

Search and Discovery.com

...Abstract: Ground Roll Noise Attenuation Using the Analytical Mode Decomposition; #90255 (2017) Ahmed Zegadi, Khalil Kheir-eddine, Leila Naili...

Abstract: Geophysical detection of reducing springs: a new approach

Nicholas Lynch, Alison Leitch

Atlantic Geology

... and present serpentinization. Based on these considerations, a 100 m x 30 m area next to a known spring was surveyed by SP using new, low-noise electrodes...

Abstract: Electric and magnetic signatures of reducing springs at the Tablelands Ophiolite, Newfoundland, Canada

Nicholas Lynch, Alison Leitch

Atlantic Geology

... on these considerations, a 100 m x 30 m area next to a known spring was surveyed by SP using new, low-noise electrodes built for this project...

Application of improved shearlet transform algorithm in noise filtering of complex fault block oilfield in eastern Bohai Sea

Yu Xiong, Cai Li, Yongqiang Yao, Shaoxuan Li, Lei Gao

International Meeting for Applied Geoscience and Energy (IMAGE)

...Application of improved shearlet transform algorithm in noise filtering of complex fault block oilfield in eastern Bohai Sea Yu Xiong, Cai Li...

Abstract: Importance of Pre-Frack Site Surveys and Broadband Seismometers to Microseismic Monitoring; #90174 (2014)

N. Ackerley and N. Spriggs

Search and Discovery.com

... noise of each of the individual stations, and show that the site noise is coherent across the array up to about 40 Hz. The blue curves are the same...