Broadband Seismic Technology and Beyond: Part VI: Towards a Ghost-Free Solution

Lasse Amundsen, Martin Landrø, Eivind Frømyr

GEO ExPro Magazine

... frequency response as far as signal to noise allows it. Such procedures can be guided by the ghost function. Going across the source-ghost notch is more...

Seismic Imaging Through Gas Cloud Using Borehole Seismic Walkaway Technique; A Case Example From Offshore Malaysia

Teck Kean Lim, Gunawan Taslim, Amy Mawarni M Yusoff

Indonesian Petroleum Association

..., Kuala Lumpur PETRONAS Carigali Sdn Bhd, Kuala Lumpur mode conversion. This in turn attenuates energy and lowers the signal to noise ratio. The gas...

Abstract: Post-processing Technique to Relocate Microseismic Events Using the Double-Difference Method; #90187 (2014)

Fernando Castellanos and Mirko van der Baan

Search and Discovery.com

... beforehand to attenuate noise that might affect crosscorrelation values. After calculating crosscorrelation coefficients for all event pairs, we...

Seismic Acquisition and Processing for Sub-thrust Imaging and Prospecting, Suaza Valley, Colombia

G.W.Paukert, G. Billings, I.Dawes, T.D.J. England, G.Rait

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... compared to the goal of signal-to-noise ratio enhancement. 447 DATA QUALITY IMPROVEMENTS DUE TO REPROCESSING AND HIGH-EFFORT SWATH2D ACQUISITION...

III Columbia Oil & Gas Investment Conference: Conventional & Unconventional Hydrocarbon Resources - Abstracts

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

.... Our models show that this approach depends on the “Signal to Coherent-noise Ratio” of the data. MODELO ESTRUCTURAL Y CÁLCULO DEL ACORTAMIENTO PARA...

A Breakthrough in the Seismic Exploration Result on Small Oil Fields

G. Valeev, R. Enikeyev, T. Shestoukh

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... converted refractions are traced. On the whole, with additional noise of P-wave arrivals the X-seismograms are characterized by a low signal – noise...

Seismic Inversion

Michel Kemper

Petroleum Exploration Society of Australia (PESA)

... to constrain the inversion), part ial stacks have 1. Radon transforms: to remove mu ltip les, if present in the data. a higher signal-to-noise ratio d ue...

Characterization of Fracture Length and Conductivity from Tracer Test and Production Data with Ensemble Kalman Filter

Siavash Hakim Elahi, Behnam Jafarpour

Unconventional Resources Technology Conference (URTEC)

... and has a low signal-to-noise ratio, introducing significant uncertainty about the URTeC 2174307 2 location of the events, typically calculated...

A Collaborative Approach to Seismic Interpretation for Offshore Field Development„A Case Study; #20338 (2016)

Satyabrata Mishra, Lawrence Grant-Woolley, Long T. Dang

Search and Discovery.com

... 3D seismic data became available in 2014. The PSDM data provided better Signal to Noise (S/N) ratio and also preserved the low frequency part...

Delineation of the Reservoir by Seismic Methods: Chapter 3

Roberto Sarmiento

AAPG Special Volumes

... formula given in equation 1. Solving for 2V2 we will have [EQUATION (3)] Now, choosing seismic data with a favorable signal-to-noise ratio, we can...

Geometric and seismic interpretation of the Perdido fold belt: Northwestern deep-water Gulf of Mexico

Rion H. Camerlo, Edward F. Benson

AAPG Bulletin

... in the Perdido fold belt to be zones of low seismic signal-to-noise ratio and seismic artifacts that result from steeply dipping, angularly bent strata in kink...

Predicting the time-evolution of CO2 saturation through a combination of rock physics and full-waveform inversion

Qi Hu, Dario Grana, Kristopher A. Innanen

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The signal-to-noise ratio (SNR) of the data is assumed to be 10. We adopt the regularization strategy of Hu and Innanen (2021) to enforce explicit...

Prestack Depth Migration for "Easy" Unconventional Plays?, #41056 (2012)

Morgan Brown

Search and Discovery.com

... three key reasons for (re)considering PSDM: 1) Remove false time structures caused by lateral variations in velocity. The ‘fault shadow’ effect...

Detection of deep geological targets in complex areas using two-side source TFEM

Yanling Shi, Xuejun Liu, Jian Song, Jingcheng Qin, Gang Yu, Zhanxiang He

International Meeting for Applied Geoscience and Energy (IMAGE)

..., but there are still some problems such as field source effect and low signal-to-noise ratio (SNR) in conventional TFEM in complex areas. To suppress...

ABSTRACT: Contrasting sterane signatures in Neoproterozoic marine sediments of the Centralian Superbasin before and after the Acraman bolide impact; #90018 (2003)

Lynn Webster

Search and Discovery.com

... provided evidence of the evolutionary havoc wrought by the Acraman event, with the C29/C27 sterane ratio transiently increasing six-fold above...

Vertical Seismic Profiling in Hydrocarbon Exploration and Reservoir Development

Bob A. Hardage

Circum Pacific Council Publications

... that are shown and described in Figure 5. The downgoing event labeled "tube waves" (Figure 6) is a fluid-borne noise mode which often occurs in vertical seismic...

Measuring Fracture Induced Stress Shadow Using Fiber Optic Sensing and Its Implications on Fracture Stimulation Design

Rob Bohn

Unconventional Resources Technology Conference (URTEC)

...’s signal-to-noise ratio (SNR) using “engineered fiber” (Richter et. al 2019). The engineered fiber can be placed within a wireline cable that can...

Seismic Imaging and Interpretive Model Building in the Colombian Andes

Rob Vestrum

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

.... With low fold in the near surface, a low signal-to-noise ratio on the image gathers, and complex horizon geometries, automated velocity-model-building...

Simultaneous source wide azimuth seismic acquisition using low frequency Gemini source in eastern Mediterranean Sea

Shangli Ou, Shelley Zaragoza, Zachary Lawrence, Lindsey Donaldson, Chris Tapie, Kim Begay-Jackson, Brian deMartin, Ares Ouzounis, Jie Shu, Luigi Pastore, Gita Febriany

International Meeting for Applied Geoscience and Energy (IMAGE)

... on Full-Waveform-Inversion (FWI). The survey program resulted in high signal-to-noise ratio (SNR) data, enhanced in low-frequency (LF) content between...

Lithology characterisation of the roof and floor of the Moranbah measures coal seam using post-stack and pre-stack seismic inversion

Margarita Pavlova

Petroleum Exploration Society of Australia (PESA)

... such as generating super gathers and applying trim statics were used to increase signal to noise ratio and flatten the gathers, respectively. AEGC...

Induced seismicity hypocentral depth stability and sensitivity to Vp/Vs in the South Delaware Basin, West Texas

Alexandros Savvaidis, Anthony Lomax, Robin Dommisse, Caroline Breton, Matthew Shirley, Vincent OSullivan

International Meeting for Applied Geoscience and Energy (IMAGE)

... locations “glued” to the surface decrease and event depths generally increase with decreasing Vp/Vs ratio. For Vp/Vs 1.73 and slightly less so...

Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology

Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia

Indonesian Petroleum Association

... the conventional processing steps, such as wide azimuth noise attenuation, surface consistent amplitude correction and deconvolution, special...

Virginia City Cole Surface/Bore-Hole Microseismic Monitor Program

Joe Teff, David Langton, Tanner Womack, Bill Greenlees, Jarret Borell, Eli Menendez, Paul Dial

Unconventional Resources Technology Conference (URTEC)

... a high confidence event with good signal to noise ratio compared to the background noise floor shown in internal software. Though events from the downhole...

Application of Wide-Azimuth 3-D Seismic Attributes to Predict the Microfractures in Block MA Area for Shale Gas Exploration in South China

Yusheng Zhang, Gang Yu, Xing Liang, Li Jiang

Unconventional Resources Technology Conference (URTEC)

... and obtaining high signal-to-noise ratio (S/N) raw seismic data, conducting prestack denoising, fidelity amplitudepreserved processing, precise velocity...

Abstract: Building Better Models … Making Full Use of Petrophysical Data; #90211 (2015)

Elizabeth L’Heureux

Search and Discovery.com

... medium, a certain amount of energy is dissipated as scattered P and S waves (Figure 5). This will contribute to a reduction in signal to noise ratio...