Joint inversion of AVO and time-shift for geomechanical strain evaluation in a UKCS field

Samarth Bachkheti, Colin MacBeth

International Meeting for Applied Geoscience and Energy (IMAGE)

... baseline and monitor seismic angle stacks. Timeshifts and time-strains are obtained through a non-linear inversion approach and monitor seismic data...

Geophysical Corner Articles from September 1996 – present, Compiled

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ABSTRACT: Anisotropic PP and PSv Prestack Depth Migration of 4C _OBC_ Seismic Data, Pamberi, Offshore Trinidad

Tony Johns, Carmen Vito and Raul Sarmiento

Geological Society of Trinidad & Tobago

.... Although raypath asymmetry (Thomsen, 1999) and lateral heterogeneity is causing significant variation in the PSv reflectivity, structurally...

Technical Article: Finding Subtle Traps with Seismic: Interpretative Criteria Clarified

A. Easton Wren

Petroleum Exploration Society of Australia (PESA)

... to the variation in facies it has encountered. The problem is what to do with the signal - assuming we have measured it properly. Structural Applications...

ABSTRACT Quantifying the Probability of Occurrence of Shallow Gas as a Geohazard, #90104 (2010)

Lee Eddy; Shipp Craig; Hack Willem; Gibson J. Larry; Dwan Fa

Search and Discovery.com

.... The variation is determined by a ratio of far‐angle to near‐angle stack. After calibration with  rock properties from well data, this variation...

Limitations on Resolution of Seismic Reflections and Geologic Detail Derivable from Them: Section 1. Fundamentals of Stratigraphic Interpretation of Seismic Data

Robert E. Sheriff

AAPG Special Volumes

... variation is the principal concern. A comparison between synthetic seismograms and well logs illustrates the resolving power of seismic data...

A Simple Guide to Seismic Horizon Interpretation

Gil Machado

GEO ExPro Magazine

... the low impedance of sea water Diapirs and other bodies of mobile salt (a) Variation of impedance, reflectivity and seismic profile according to various...

Abstract: Role of Simultaneous Inversion of Seismic Angle Stacks in Reservoir Characterization, by Samir Biswal; #90078 (2008)

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High-frequency FWI velocity model building for hydrocarbon delineation

Lianping Zhang, Souvik Sengupta, Chirag Parekh, Robert Eliott-Lockhart

International Meeting for Applied Geoscience and Energy (IMAGE)

... to be delineated and compensated for the absorption effect to further improve imaging. We also utilized pseudo reflectivity to validate the velocity model quality...

Abstract: Nonlinear Seismic Wave Propagation in Heavy Oil; #90224 (2015)

Wubing Deng and Igor B. Morozov

Search and Discovery.com

... Wubing Deng and Igor B. Morozov University of Saskatchewan Summary The propagation, reflectivity, and attenuation of seismic waves in bitumen-rich rocks...

Estimating CO2 saturation and porosity using the double difference approach based invertible neural network

Arnab Dhara, Mrinal K. Sen, Sohini Dasgupta

International Meeting for Applied Geoscience and Energy (IMAGE)

.... (2014) used a basis pursuit prestack inversion on time-lapse Amplitude Versus Angle (AVA) datasets to obtain high resolution subsurface properties from...

Abstract: Comprehensive Karst Delineation from 3D Seismic Data, by Gaynor Fisher, David Hunt, Arnout Colpaert, Brita G. Wall, and Jonathan Henderson; #90105 (2010)

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Workflow for Nonlinear AVO Inversion to Estimate Seismic Anisotropy and Geomechanical Properties of Shale

Un Young Lim, Richard L. Gibson Jr., Nurul Kabir

Unconventional Resources Technology Conference (URTEC)

... sweet spots and locations for effective hydraulic fracturing. Amplitude Variation with Offset (AVO) inversion may make important contributions...

Deep channels in the CenomanianDanian Chalk Group of the German North Sea sector: Evidence of strong constructional and erosional bottom currents and effect on reservoir quality distribution

Finn Surlyk, Solvejg Kolbye Jensen, Michael Engkilde

AAPG Bulletin

... (Figures 7, 10). The reflectivity is good to moderate, and the reflection pattern is mainly even and parallel but with some irregularities. Very low-angle...

Novel forward seismic modeling using the integration of Schmidt hammer and LiDAR: Example McKittrick Canyon Permian Reef Trail outcrop, Guadalupe National Park, Texas

Zhuobo Wang, John Pigott, Chenxi Xu

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Introduction Seismic imaging of carbonate buildups is often challenging owing to the high reflectivity of bounding layers and homogeneity in the interior...

Prestack inversion and amplitude variation with offset attributes as hydrocarbon indicators in carbonate rocks: A case study from the Illinois Basin

Jacob T. Murchek, Paul McColgan, Lindell C. Bridges, Ernest C. Hauser, and Doyle R. Watts

AAPG Bulletin

...Prestack inversion and amplitude variation with offset attributes as hydrocarbon indicators in carbonate rocks: A case study from the Illinois Basin...

Extended Abstract: Large-Scale Depositional Characteristics of the Wilcox Formation, Central Gulf of Mexico Deepwater

Paul K. Wieg

GCAGS Transactions

... the “transparent” Wilcox interval, there is mappable reflectivity, including a continuous event of moderate amplitude which is presumed to correspond to the “Big...

Appalachian Area: Regional Studies

Parker D. Trask, H. Whitman Patnode

AAPG Special Volumes

.... The vertical variation of the color is also plotted on Figure 72. The sediments, on the whole, have a reflectivity close to the average...

Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data

Paul L. Stoffa

Circum Pacific Council Publications

.... STOFFA several methods. One benefit of using the T-p domain for analysis and imaging is that reflectivity variation with angle of incidence can...

Integrated Workflows for Drilling Optimization and Enhanced Production

Jakob Heller, Venkatesh Anantharamu, Andrew Lewis, Bruce Karr, Ron Bianco

Unconventional Resources Technology Conference (URTEC)

... elastic properties from seismic angle stacks. Parallelly in phase 2, a detailed pore pressure and geomechanics analysis was performed on a series...

Abstract: The Importance of Wide-Angle Seismic Data for Models of Extensional Basins, by T.A. Minshull, D.J. Shillington, C.L. Scott, N.J. White, and R.A. Edwards; #90066 (2007)

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ABSTRACT Facies and Architectural Variability of the Albian Stuart City Margin, #90104 (2010)

Phelps Ryan M., Kerans Charlie

Search and Discovery.com

.... This array of profiles illustrates observed variation in the dip‐angle of reefal clinoforms, the abundance of  syndepositional fractures and the extent...

ABSTRACT: Rejuvenation of a Mature Field Through Application of a Unique Frequency Enhancement Technology; #90007 (2002)

Marcus L. Countiss

Search and Discovery.com

... was greatly improved leading to the conclusion that many of the discontinuities previously interpreted as faulting were in fact stratigraphic variation...

Curves for the Determination of Compaction Using Deformed Cross-bedding

Graham Borradaile

Journal of Sedimentary Research (SEPM)

.... That problem is considerably complicated by the original variation in the direction of foreset dips. The foresets may be steepened or depressed (Ramsay, 1961...

Drilling Using AvO to Reduce Uncertainties in D35 Infill

Meh Jabeen Zainuddin

Geological Society of Malaysia (GSM)

..., near and far offset migrated sub-stacks were also created for the purpose of the AvO study. These reflectivity offset sub-stacks were zero-phased...