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Amplitude

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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214689
... been applied to gathers after prestack-time migration and these gathers have been used to produce full-fold and angle stacks with the aim of doing amplitude versus offset (or angle) work on these datasets. By means of a simple synthetic event it is shown here that when a gain limit is used within...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-3239
... ABSTRACT A tomographic inversion approach using prestack depth migrated common image gathers is utilized to compensate reflection data for amplitude loss caused by transmission anomalies, such as shallow gas, in the overburden. The approach has the advantage of estimating transmission losses...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-2499
... ABSTRACT Localized WKBJ correction based on Local Cosine Basis (LCB) beamlet propagator is applied in post- and pre-stack migration to study its influence on image amplitude. 2D SEG/EAGE salt model is used for demonstration. The results indicate that localized WKBJ correction have some...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-0917
... INTRODUCTION Summary The Simulation Migration Amplitude is a ray-based, targetoriented Kirchhoff migration of synthetic data around the reflection points using the local paraxial approximation of the two-way traveltime field on the target horizon. Compared to conventional migration...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-0925
... the same traveltimes as the full wave equation, but do not yield accurate amplitudes except for homogeneous media. Here, we present augmented one-way wave equations that yield solutions for which the leading order asymptotic amplitude as well as the traveltime satisfy the same differential equations as do...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-2078
... Summary Turning ray amplitude inversion is a deterministic seismic processing algorithm that uses first-arrival data to generate a near-surface attenuation model that is used to compensate prestack or poststack reflection data for amplitude loss caused by shallow gas zones. Quantitative...
Proceedings Papers

Paper presented at the 1999 SEG Annual Meeting, October 31–November 5, 1999
Paper Number: SEG-1999-0832
... compensation reflection true-amplitude dmo primary reflection amplitude avo gradient The impact of true amplitude DMO on amplitude versus offset Antonio C. B. Ramos, PETROBRAS, Adelson S. Oliveira, PETROBRAS, and Martin Tygel*, State University of Campinas, UNICAMP, Brazil SUMMARY We discuss...
Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-1516
... ABSTRACT No preview is available for this paper. heavy oil poisson amplitude saturation operation reservoir characterization amplitude ratio reflection amplitude upstream oil & gas recovery arpa plot variation information interpretation partial angle incidence...
Proceedings Papers

Paper presented at the 1985 SEG Annual Meeting, October 6–10, 1985
Paper Number: SEG-1985-0591
... ABSTRACT No preview is available for this paper. amplitude zoeppritz anomaly amplitude increase equalization amplitude level amplitude information numerical amplitude trace equalization information amplitude variation amplitude processing correction section-dependent...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1985
Paper Number: OTC-4932-MS
...OTC 4932 Controlled Amplitude Processing and Offset Amplitude Variation by G.J. Yu, Superior Oil Co. Copyright 1985 Offshore Technology Conference This paper was presented at the 17th Annual OTC in Houston, Texas, May 6-9,1985. The material is subject to correction by the author. Permission to copy...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3750865
... Due to large buried depth and complicated geological conditions of Paleogene strata in Bohai Oilfield, the seismic data is commonly not amplitude-preserved and thus conventional post-stack methods are often difficult to characterize the reservoirs effectively. Pre-stack inversion can better...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3750870
... Seismic amplitude is one of the most commonly used parameters for hydrocarbon detection, especially in Neogene with relatively shallow buried depth. However, it has been confirmed by many scholars’ research that amplitude is often affected by a variety of factors except for pore fluid property...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751591
... Seismic refractions play an important role in near surface imaging. However, the far-offset refractions are often too weak to identify. To enhance the far-offset refraction amplitude, several super-virtual interferometry methods are developed to reconstruct refractions using a physical model...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751098
... As we all know, low-amplitude reservoirs always have an oil column height less than 10m, the development effectiveness of which is determined by the accuracy of depth prediction to a large extent. And the situation becomes much more serious when a low-amplitude reservoir is offshore at the same...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3746458
... hydrocarbon detection method is based on the attenuation of the seismic response amplitude. The influence factors of the seismic response amplitude are not only fluid, but also reservoir structure and thickness. How to eliminate the influence of reservoir structure and thickness and highlight the influence...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751987
... In this study the seismic amplitude quality and analysis played an important role to identify and derisk new leads in a seismic volume of approximately 2000 km 2 . The closest well was dry, it crosscut the Neogene section and was located 30 km away from the area of study. So, it was important...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3750072
... are no longer sufficient to capture incorrect true amplitude recovery and Q compensation in the data processing. The first problem will be demonstrated on a synthetic data-set where also deliberately absorption effects are modelled in the data. It is demonstrated that wave-equation based AVO inversion can...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3750489
... Analysis of seismic amplitude-versus-angle (AVA) is a primary technique for deriving hydrocarbon indicators. Many seismic processing algorithms distort amplitudes. We extend existing work and propose a general framework for modeling-based amplitude recovery (MBAR) through paired processing...
Proceedings Papers

Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3742106
... estimate these properties by inverting the amplitude variations with ray parameter (horizontal slowness) of the direct arrival. Synthetic data shows exact results compared with analytic expressions for reflection and transmission coefficients of the seabed interface. Inverting field data from the deep...
Proceedings Papers

Paper presented at the ADIPEC, October 31–November 3, 2022
Paper Number: SPE-211365-MS
... on adjusting the permeability of reservoir models by integrating seismic amplitude values and data from wells’ pressure transient analyses. The seismic amplitude data in the vicinity of a candidate well is correlated with permeability obtained from recorded pressure transient data in a systematic way...

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