Super-virtual interferometry for noise elimination on vertical seismic profiling (VSP)

Yicheng Zhou, Yang Cui, Sherif Hanafy

International Meeting for Applied Geoscience and Energy (IMAGE)

... it difficult to pick traveltime information, which is used as the input for traveltime tomography to build subsurface velocity models. For this reason...

erformance of Seismic Arrays in the Presence of Weathering Layer Variations, #41841 (2016).

Jubran Akram, Abdullatif A. Al-Shuhail

Search and Discovery.com

... of the plane wavefront, Vw is the weathering layer velocity, b is the channel depth, and β is the angle of the line connecting the intersection point...

Three-dimensional seismic geomorphology and analysis of the Ordovician paleokarst drainage system in the central Tabei Uplift, northern Tarim Basin, western China

Hongliu Zeng, Robert Loucks, Xavier Janson, Guizhong Wang, Yiping Xia, Bingheng Yuan, Ligui Xu

AAPG Bulletin

... of this algorithm is an unmigrated poststack-time 3-D volume that is then depth migrated using a smoothed velocity model (Janson and Fomel, 2011). No random...

Abstract: Microseismic Event Locations Uncertainity and Acquisition Geometry; #90224 (2015)

Amna Feroz and Mirko van der Baan

Search and Discovery.com

... uncertainty in microseismic event locations. Uncertainties in microseismic event location arise due to several factors, including inaccurate velocity model...

ABSTRACT: 3-D Seismic Expression of High-Frequency Sequence Stratigraphy in Vermilion Block 50-Tiger Shoal Area, Offshore Louisiana, by Hongliu Zeng, Tucker F. Hentz, and Lesli J. Wood; #90906(2001)

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Core-Seismic Correlation and Sequence Stratigraphy at IODP Expedition 317 Drillsites, Canterbury Basin, New Zealand

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Inversion of magnetotellurics data with enhanced structural fidelity

Federico Golfré Andreasi, Simone Re, Federico Ceci, Luca Masnaghetti

Petroleum Exploration Society of Australia (PESA)

... to infer the geologic setting at depth and to build a structural model with adequate confidence; this is the time when it becomes necessary to step...

Sequential vertical gas charge into multilayered sequences controlled by central conduits

M. Foschi, J. A. Cartwright, and C. W. MacMinn

AAPG Bulletin

... (0–1 s two-way traveltime [TWT], i.e., the main interval of interest) to 22 m (72 ft) at depth (1–4 s TWT). Horizontal resolution is approximately...

Structure and Development of Porcupine Seabight Sedimentary Basin, Offshore Southwest Ireland

D. G. Masson, P. R. Miles

AAPG Bulletin

...------------ The Porcupine Seabight is a conspicuous embayment in the continental margin southwest of Ireland (Figure 1). Water depth within...

A Multidisciplinary Approach to Reservoir Subdivision of the Maastrichtian Chalk in the Dan Field, Danish North Sea

Lars Kristensen , Thomas Dons , Kim Gunn Maver , Poul Schioler

AAPG Bulletin

...-to-time conversions done for tying the biostratigraphy to the seismic data. The seismic traveltime within the chalk was estimated from interval velocity...

Velocity model building with a time shift objective function: Gulf of Mexico examples

Yi Yang, Ken Matson, Tadas Krupovnickas, Mark Huiskes, Rene-Edouard Plessix, Sijmen Gerritsen

International Meeting for Applied Geoscience and Energy (IMAGE)

...ed a large scale smoothing over the whole model to avoid local minima during early inversions. Basement horizon depth, as well as basement veloci...

Structural geometry and evolution of the Ku, Zaap, and Maloob structures, Campeche Bay, Mexico

Shankar Mitra, Juan A. Duran Gonzalez, Jesus Garcia Hernandez, Sergio Hernandez Garcia, Subhotosh Banerjee

AAPG Bulletin

... that provide the best correlation between seismic horizons and well markers were used to convert the seismic sections to depth. Constant velocity functions were...

DAS microseismic reflection imaging for hydraulic fracture and fault zone mapping

Yuanyuan Ma, Jonathan Ajo-Franklin, Avinash Nayak, Xiaoyu Zhu, Julia Correa

International Meeting for Applied Geoscience and Energy (IMAGE)

... S-wave velocity model (Figure 1c) to compute a traveltime table, then migrate the microseismic traces and output an S-wave image volume on a 10 × 10 × 10...

Geophysical Investigation of the Breccias Impact on Reservoir Quality in the Madison Formation, The Beartooth Region, Montana, U.S.A.

Wisam H. AlKawai

Search and Discovery.com

.... •Traveltime inversion was applied to determine the P-wave velocity in the Madison Formation which is 2650 m/s. •This velocity is lower than the typical P...

Practical solutions for reflection-driven FWI and application to Gulf of Mexico datasets

Max Liu, Ren-douard Plessix, Yi Yang, Jeffrey Vander Hurst, Na Shan, Rob Schelstrate, Colin Perkins, Vanessa Goh

International Meeting for Applied Geoscience and Energy (IMAGE)

...-depth ambiguity, and acoustic and shear impedance imprints in velocity updates. In this paper we dive deeper into some of these issues and discuss...

Elastic FWI imaging of a complex presalt structure using NATS data

Arthur Henrique, Luiz Felão, Sergio Barragan, Florian Jouno

International Meeting for Applied Geoscience and Energy (IMAGE)

..., characteristic of this type of acquisition, pose challenges to velocity model building and imaging. The target lies below the diving wave penetration...

Broad Top Thrust Sheet: An Extensive Blind Thrust in the Central Appalachians (1)

Thomas H. Wilson and Robert C. Shumaker

AAPG Bulletin

... reflections. Based on the two-way interval traveltime of 0.75 s and average velocity through the unit of 22,300 ft/s (6800 m/s) derived from a velocity...

ABSTRACT: Marine Crustal Reflection Profiling Offshore Santa Maria Basin Westward to Base of Continental Slope, by Anne S. Meltzer and Alan R. Levander; #91035 (2010)

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Inversion of Magnetotelluric (MT) Data with Enhanced Structural Fidelity, #42333 (2018).

Federico Golfre Andreasi, Simone Re, Federico Ceci, Luca Masnaghetti

Search and Discovery.com

.... Unfortunately, these techniques lack the resolution required to infer the geologic setting at depth and to build a structural model with adequate...

A deep-learning workflow for weak reflection extraction in pitch-catch measurements in cased-hole

Qiang Wang, Hua Wang, Shaopeng Shi

International Meeting for Applied Geoscience and Energy (IMAGE)

...ut the active learning strategy. Fig. 9 The A0 and TIE boundary picking by solving Eikonal equation. (a) A0 pseudo-velocity map; (b) Calculated A0 travelti...

Gas hydrates characterization in the southern Hikurangi margin using full waveform inversion

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Chapter 14 (Case Histories of Three-Dimensional Seismic Surveys)—Case History 4: 3-D Seismic Interpretation of an Upper Permian Gas Field in Northwest Germany

H. E. C. Swanenberg, F. X. Fuehrer

AAPG Special Volumes

... definition and resolution of the target horizon at 3500 to 4000 m depth (corresponding to 2.2 to 2.4 sec two-way traveltime) is severely influenced...

Estimation of detachment depths and displacements from the area–depth markers of contractional growth structures: Testing the “inverse line” concept

Sam Rivas-Dorado

AAPG Bulletin

... or redrafted from its original source. Interpretations have been validated via regular ADS analysis. If a good linear fit and detachment depth were...

Seismic Characterization of Large-scale Sandstone Intrusions

Mads Huuse, Joe Cartwright, Andrew Hurst, Noralf Steinsland

AAPG Special Volumes

... and empirical relations exist that relate the velocity or density of sandstones and mudstones to their porosity and/or depth of burial...

Benefits of selective stacking of windowed high-resolution linear radon transform (HRLRT) images from traffic-induced passive-seismic data with the multi-channel analysis of surface waves (MASW) method in Lawrence, Kansas

Julian Ivanov, Richard D. Miller, Dmitry Borisov, Shelby Peterie, Anthony M. Hoch

International Meeting for Applied Geoscience and Energy (IMAGE)

...Benefits of selective stacking of windowed high-resolution linear radon transform (HRLRT) images from traffic-induced passive-seismic data...