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The AAPG/Datapages Combined Publications Database

Showing 42,730 Results. Searched 200,691 documents.

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Regional Velocity-Depth Anomalies, North Sea Chalk: A Record of Overpressure and Neogene Uplift and Erosion

Peter Japsen

AAPG Bulletin

... A normal velocity-depth trend for the Upper Cretaceous-Danian Chalk Group is determined by identifying interval-velocity data that represent maximum...

1998

ABSTRACT: Hidden Structure Revealed by a Simple 3D Velocity Model„McAllen Ranch Field, Hidalgo County, Texas; #90117 (2010)

Richard C. Bain

Search and Discovery.com

... that a 1,500 ft (500 m) thick interval in the Frio Formation 5,000 ft (1,500 m) above the objective reservoir had velocities that were as much as 50...

2010

Abstract: Constraining Anisotropy … Lessons from 2D Modeling; #90211 (2015)

Rob Holt

Search and Discovery.com

... anisotropy affect the ray path? Is it possible to differentiate between stronger anisotropy limited to a short depth interval and weaker anisotropy...

2015

Abstract: Enhancing the Signal-To-Noise Ratio of Sonic Waveforms by Interferometric Stacking; #90255 (2017)

Ali Aldawood, Ibrahim Hoteit, Abdulrahman Alshuhail, Abdullatif Al-Shuhail

Search and Discovery.com

... of Petroleum and Minerals 2 Abstract Sonic logs are essential tools for reliably identifying interval velocities which, in turn, are used in many...

2017

Abstract: Reflection Full Traveltime Inversion in the Image Domain; #90319 (2018)

Yue Ma, Tong W. Fei, Yan Wu, Yi Luo

Search and Discovery.com

... or kinematic information in seismic data or migrated gathers for smooth velocities, suffer a common and severe problem ---- the inversion...

2018

AAPG Memoir 76, Chapter 16: Pore Pressure ahead of the Bit: An Integrated Approach

Nader C. Dutta, William H. Borland, W. Scott Leaney, Richard Meehan, and W. Les Nutt

AAPG Special Volumes

... stress. Figure 1 shows the prediction procedure. The quality of the prediction is heavily dependent on the accuracy of the interval velocities...

2001

The Application of Image Processing Techniques for Complex Structures

V. Sudhakar, I. T. McMahon

Indonesian Petroleum Association

... dependence and raypath effects due to depth-dependent interval velocities. DMO corrects for the dip dependence of moveout and inherently applies a migration...

1987

Analysis and Integration of Well Logs and Ultrasonic Velocities of Productive Facies in the Upper Viola Formation in Southwestern Kansas; #11110 (2018)

William K. Hagood, Victor Cimino, Matthew Totten, Abdelmoneam Raef

Search and Discovery.com

...Analysis and Integration of Well Logs and Ultrasonic Velocities of Productive Facies in the Upper Viola Formation in Southwestern Kansas; #11110...

2018

Delineation of Gas Sands by Seismic Stratigraphy in the Pericocal Area, Orinoco Heavy Oil Belt, Venezuela: Section IV. Exploration Methods

J. Licheri, N. Parra

AAPG Special Volumes

... equalization; -- Wavelet processing and conversion to zero phase; -- Reflection coefficients; and -- Interval velocities. After gain removal from...

1987

Structure of Extensionally Rifted Crust Beneath the Western Ross Sea and Iselin Bank, Antarctica, from Sonobuoy Seismic Data

A. K. Cooper, F. J. Davey, G. R. Cochrane

Circum Pacific Council Publications

... in Table 1. In many cases, the refraction arrivals define a curved trend indicating the presence of velocity gradients, rather than uni­ form velocities...

1987

"Basement" to East Coast Continental Margin of North America

M. A. Mayhew

AAPG Bulletin

... velocity Cenozoic and later Mesozoic sediments. Velocities within basement cluster in two groups, less than and greater than about 5.6 km/sec. High...

1974

Seismic Detection of Overpressuring and Fracturing: An Example from the Qaidam Basin, People’s Republic of China

Robert J. Paul

Southeast Asia Petroleum Exploration Society (SEAPEX)

... the equivalent seismic events by up to 40 msec over a 400 msec interval. This apparent discrepancy between the seismic and sonic velocities may in part be due...

1990

Prestack Depth Imaging Within the Makassar Straits, Eastern Kalimantan, Indonesia

Chris Willacy, Suryadi Oemar, A. Edy Hermantoro, Paul Gilleran

Indonesian Petroleum Association

... of the thrust faults can vary by up to 1000m depending on the derivation of interval velocities within the hanging wall. Travel time inversion is used...

2000

Determination of Drag Coefficients in Measuring Particle Diameters

Weinan Chen

Journal of Sedimentary Research (SEPM)

... interval:      (26) A particle reaches its terminal velocity (Vt) when dVs/dt equals zero. The settling velocities of particles are calculated for 1 µm...

2003

Sediment Texture and Transport Studies in an Intertidal Environment: A Progress Report

Robert W. Dalrymple

Atlantic Geology

... into a topographic map of Selmah Bar (Fig. 1), with a 1-m contour interval. This map can now be used as a base for further work. Megaripple Migration: One...

1973

VIII. Conversion of Seismic Data to Log-Like Displays

Norman S. Neidell

AAPG Special Volumes

... so that they can better discriminate between true event velocities and multiple velocities. The wavelet used in the synthetic seismogram...

1979

Impact of an Integrated Seismic Data Processing Approach: A Case Study in Central Sumatra

Mars E. Semaan, Eddy Murhantoro, Maryanto, Achmad Bermawi, Budi Subianto, Hari Santoso

Indonesian Petroleum Association

... of the inverted interval velocities of the seismic data. Figure 3.   AVO Inversion for the lithology The primary goal of Amplitude Variation with Offset...

1992

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