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The AAPG/Datapages Combined Publications Database

Showing 5,918 Results. Searched 196,371 documents.

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Abstract: Confidence and Accuracy of Microseismic Images; #90171 (2013)

S.C. Maxwell

Search and Discovery.com

... and assurance of optimal image quality. The microseismic image resolution is primarily controlled by the hypocentral accuracy. Random hypocenter...

2013

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

... image. To relax the sensitivity of LSM to velocity errors and promote its application in deep and ultradeep seismic data, we present a new coherent-stack...

2024

Abstract: Controlled Sensitivity Tomography for Depth Imaging the NAZ Surveys in the Nile Delta's Messinian; #90254 (2016)

Ahmed El-Bassiony, Suhail Butt, David Cavalin, Ramadan Ramadan, Howard Crook

Search and Discovery.com

...Abstract: Controlled Sensitivity Tomography for Depth Imaging the NAZ Surveys in the Nile Delta's Messinian; #90254 (2016) Ahmed El-Bassiony, Suhail...

2016

ABSTRACT: DEPTH IMAGING VELOCITY ESTIMATION CASE HISTORY IN A CHALLENGING AREA OF CALIFORNIA; #90014 (2003)

Fliedner, Moritz, Dimitri Bevc, Robert Clapp

Search and Discovery.com

... of non-vertically traveling energy. This setting poses a particular challenge to depth imaging because of the sensitivity velocity model errors...

Unknown

Geologically Constrained Seismic Imaging in Andean Thrust Belts, #42530 (2020).

Rob Vestrum,

Search and Discovery.com

... the seismic image. Simplifying assumptions and averaging the various velocity offers robustness in exchange for accuracy. 1000 2500 3371 61 2500 39 14...

2020

Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014)

Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F. Margrave

Search and Discovery.com

...nsitivity of LSPSM to the accuracy of velocity and its low sensitivity to the incompleteness and irregularities of data are the key points ...

2014

Velocity Logging and Its Geological and Geophysical Applications

H. R. Breck, S. W. Schoellhorn, R. B. Baum

AAPG Bulletin

... of synthesizing records from continuous velocity logs, the geophysicist will be able to develop better instrumentation for further improving the accuracy...

1957

AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

.... Comparison of depth errors obtained by individually fitting various velocity models to check shots in 12 GOM wells. Statistical fit of data from 3000...

2001

Chapter 10-part 3: 3-D Depth Image Interpretation

William L. Abriel, Joseph P. Stefani, Robert D. Shank, David C. Bartel

AAPG Special Volumes

... with the increase in image accuracy, comes the danger of not having the right earth velocity to make the corrections. Because depth imaging does...

2011

A Report on the Renaissance of Gravity in the Deep Water Gulf of Mexico: A Practical View of Integration Methods

Brian S. Anderson, Mark E. Weber, John E. Bain

Houston Geological Society

... the seismologists to refine their migration velocity model for the structure, and as a result, refine the seismic image through reprocessing the data using...

1998

Abstract: Subsalt Velocity Estimation Using Wave-Equation Tomography with Surface Offset Gathers; #90319 (2018)

Yujin Liu, Yan Wu, Xiongwen Wang, Tong W. Fei, Yi Luo

Search and Discovery.com

..., the seismic wave path is very complex and needs an accurate propagator to generate the sensitivity kernel for velocity estimation. To extract RMO...

2018

Comparative Microseismic Interpretation of Hydraulic Fractures, #41308 (2014)

Shawn Maxwell

Search and Discovery.com

... and an accuracy component related to potential systematic errors associated with the velocity model (Maxwell, 2009a). The precision is more important...

2014

Combined Diving Wave Refraction Tomography and Reflection Tomography for PSDM Velocity Model Building (Bekapai Field, Indonesia)

Andi Kusuma, Florent Bertini, Jacques Bonnafe, Artem Sazykin, Swee Leng Ng

Indonesian Petroleum Association

... velocity errors for both intervals were shifted towards zero percent. © IPA, 2012 - 35th Annual Convention Proceedings, 2011 Figure 12 - Shallow image...

2011

AAPG Archie Series, No. 1, Chapter 9: Borehole Image Logs in Thinly Bedded Reservoirs

Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia

AAPG Special Volumes

... comparing image logs with core suggest that EBI button currents can be placed with remarkable accuracy at substantial reservoir depths. However...

2006

AAPG Memoir 76, Chapter 19: The Future of Pressure Prediction Using Geophysical Methods

Alan R. Huffman

AAPG Special Volumes

... analysis, refraction and reflection tomography, and prestack inversion (Bell, 2002). These techniques can increase the accuracy of the velocity...

2001

Abstract: Microseismic Event Location Accuracy Enhancement using Anisotropic Velocity Models; #90172 (2014)

Michael Jones, Richard Parker, Shawn Maxwell

Search and Discovery.com

...Abstract: Microseismic Event Location Accuracy Enhancement using Anisotropic Velocity Models; #90172 (2014) Michael Jones, Richard Parker, Shawn...

2014

Influence of node position uncertainty on FWI and Mirror-RTM

Felipe Capuzzo, Marco Cetale, Sergio Luiz da Silva, Roger Moreira, Felipe T. Costa, Ammir A. Karsou, Jorge Lopez

International Meeting for Applied Geoscience and Energy (IMAGE)

... their influence on imaging. Our results show that uncertainties in OBN positioning can lead to errors in the recovered velocity models obtained from FWI, which...

2023

Abstract: Comparative Study on 2D Microseismic Source Location with Synthetic Seismograms Recorded by Borehole- and Surfacereceiver Arrays; #90224 (2015)

Anton Biryukov, Simon G.E. Harvey, and Giovanni Grasselli

Search and Discovery.com

... of the image depends on the dominant wavelength of the source. Thus the resolution may vary with changes in the dominant frequency of the source or velocity...

2015

Results of Elastic-Wave Surveys in California and Elsewhere

Frank Rieber

AAPG Bulletin

... as in Figure 5. ACCURACY REQUIREMENTS IN MAPPING LOOSELY CONSOLIDATED SEDIMENTS In mapping the contact between a high- and a low-velocity medium...

1930

Structural Uncertainty Study: An Example From Sisi Nubi Fields

Rangga A. Brahmantio, Cepi M. Adam, Arnaud Laffaure, Emmanuel Chavanne, Noor Syarifuddin

Indonesian Petroleum Association

... also having effect to the bulk volume is fault position uncertainties and fluid contact uncertainties. One way to quantify the accuracy of velocity...

2008

Settling Velocity and Grain Shape of Maërl Biogenic Gravel

Siddhi Joshi, Garret P. Duffy, Colin Brown

Journal of Sedimentary Research (SEPM)

... was rejected. Error Estimation. The settling-velocity estimate and its accuracy were obtained using where is the settling-velocity error...

2014

Granite and Limestone Velocity Determinations in Arbuckle Mountains, Oklahoma

B. B. Weatherby, W. T. Born, R. L. Harding

AAPG Bulletin

... within observational errors and yield a value of 17,950 ft./sec. for the longitudinal wave velocity. The data taken over the shorter span show...

1934

Simultaneous Joint Inversion as a Salt Detector in South Gabon Land Exploration; #40835 (2011)

Marco Mantovani and Thierry Dugoujard

Search and Discovery.com

... be refined in an iterative, trial and error process. Misplacements or boundary errors in N-G horizons result in joint inversion velocity and density...

2011

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