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The AAPG/Datapages Combined Publications Database

Showing 34,499 Results. Searched 200,691 documents.

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Effects of Sphericity, Roundness, and Velocity on Traction Transportation of Sand Grains

William J. Morris

Journal of Sedimentary Research (SEPM)

... in roundness downstream in the smaller fraction. The effect of change in average fluid velocity TABLE 2. Standard deviation (M) and arithmetic mean...

1957

Structural Trend Analysis by Axial Surface Mapping: Discussion

Donald S. Stone

AAPG Bulletin

... and Repetto section (Sorensen et al., 1993). This gas saturation produces a marked velocity pull-down effect in the crestal area of the fold (Figure 7...

1996

Seismic and Well Interpretation of Fluvial Clastic and Coal Packages for Stratigraphic Traps within the Patchawarra Formation, Cooper Basin

Christopher Webb

Petroleum Exploration Society of Australia (PESA)

.... The dataset velocity field. 2 has been processed to zero-phase (symmetrical wavelet) and displayed according to Australia/U.K.O.O.A convention (Simm...

2015

Bubble, Bubble, Tremors, and Trouble: The Bayou Corne Sinkhole in Assumption Parish, Louisiana

Jeffrey A. Nunn

GCAGS Transactions

... individual bubbling locations have waxed and waned and a few have stopped, there has been no long term change in bubbling intensity. Also, some temporal...

2014

Seismic Applications of the Velocity Log

W. G. Rimmer

CSPG Bulletin

... = rock velocity formation 2 = "incremental change in" Thus the amplitude of the wave reflected from any incremental change in acoustic impedance...

1960

Rock Properties and Seismic Attributes Analysis of Chert Reservoirs in the Devonian Thirtyone Formation, West Texas

Dongjun Fu, Charlotte Sullivan, Kurt Marfurt, Joel Famini, Peter Wang

West Texas Geological Society

... thickness falls below ¼ wavelength. Our attempt to measure the effect of fractures on velocity through core measurements failed. While this failure...

2004

New Insights into the Deep-Water Otway Basin - Part 1. Integrated Depth Imaging Workflows Unravelling the Subsurface

Si Ying Lee, Bee Jik Lim, Arwindran Anantan, Alexander Karvelas

Australian Petroleum Production & Exploration Association (APPEA) Journal

... velocity variations of the major geological units whilst maintaining the depth consistency at the intersection location of all the 2D lines in both dip...

2021

Geometric and seismic interpretation of the Perdido fold belt: Northwestern deep-water Gulf of Mexico

Rion H. Camerlo, Edward F. Benson

AAPG Bulletin

... in 1996. Data quality significantly improved by the late 1990s, especially the imaging and recording of data to much greater depth (traveltime...

2006

Section 2: Improvement of Seismic Images of Complex Tectonic Structure in Deep Water with Research-Level Processing Sequences

John Miller and Roland von Huene

AAPG Special Volumes

... a time- and space-varying velocity model along the line. 4. NMO--removes the effect of the source-receiver separation by using the NMO equation...

1986

The Preparation of Seismic Depth Maps in Oil Exploration

A. E. Pallister

CSPG Bulletin

... amount of high-velocity Paleozoic sediments at 11-28. This illustrates the effect of the Paleozoic topography's influence on the reflection times...

1960

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...

2015

Relating Seismic Time to Geological Datum: ABSTRACT

James L. Porter

AAPG Bulletin

... are introduced. Three types of errors are inherent in correcting seismic time to a horizontal datum. These are: (1) if velocity is inaccurate, each change...

1960

Sediment Movement in Relation to Current Velocity

Henry W. Menard

Journal of Sedimentary Research (SEPM)

.... 4. Ripples are destroyed at a current velocity which probably corresponds to a change in the nature of the flow from tranquil to torrential...

1950

Success Factors for Effective Subsurface Imaging of Overthrust Belt Legacy Seismic Data

Walt Ritchie and Mihai Popovici

Search and Discovery.com

... (i.e., only small residual moveout error represents large velocity variation). The net effect was that residual curvature (velocity) estimates from...

2009

4D GPR for Characterization of Fluid Flow in Carbonates: Insights from Structural- vs. Stratigraphic-Controlled Domains and Comparison with Eclipse Dynamic Modeling; #41179 (2013)

Pierpaolo Marchesini, Mark Grasmueck, Gregor P. Eberli, and Ralf J. Weger

Search and Discovery.com

... the traveltime of subsurface reflections. Timeshifts are extracted between pairs of time-lapse surveys with 3-D crosscorrelation. The timeshifts...

2013

Limitations of Reflection Seismograph

L. E. Nugent, Jr.

AAPG Bulletin

... the shot. Since the shot is fired in a high-velocity zone, the effect of the low-velocity zone is removed from a detector at the shot point if the uphole...

1953

Geological Factors Influencing Porosity Estimates From Velocity Logs

Roberto Sarmiento

AAPG Bulletin

... in this paper. Depth: The effect of depth on velocity has been long recognized by geophysicists (Faust, 1951). It is one of the main factors defining...

1961

South LHO Sukon-D1 Discovery, North Sumatra

M. A. Maliki, Soenarnyoto Soenarwi

Indonesian Petroleum Association

... and Gamma-Ray (DLL-MSFL-GR) Velocity Check Shots Formation Micro Scanner (FMS) Vertical Seismic Profile (VSP) Side Wall Coring of 60 bullets...

1991

Interpretation of first-arrival times of borehole acoustic measurements acquired in high-angle wells using 3D eikonal numerical simulations

Feiyue Xia, Carlos Torres-Verdín

International Meeting for Applied Geoscience and Energy (IMAGE)

... and that the wave traveltime is only affected by velocity variations on the traveling path (Červený, 2001). Wang et al. (2017) applies a simplified raytracing...

2024

Abstracts: Oilsands: Not Your Average Seismic Data; #90173 (2015)

David Gray

Search and Discovery.com

... and the shearwaves have followed almost exactly the same raypath, the effect must be due to seismic velocity anisotropy in the overburden (Bale, 2011...

2015

Seismic Characterization of the Navajo Reservoir, Buzzards Bench, Utah; #51503 (2018)

Kimberley Haar, Robert Balch, Robert Will

Search and Discovery.com

..., H. Leetaru, R. Will, and M. Coueslan, 2014, The Evolution and Effect of the Velocity Model on Various Aspects of Surfaces Seismic Data Analysis...

2018

Detection of shallow sedimentary structure of Yigong Lake in Tibetan Plateau using distributed acoustic sensing

Jian Zhou, Jizhong Yang, Heng Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... interferometry of ambient noise and multichannel analysis of surface wave. We get a 2D shear-wave velocity profile along the cable and reveal...

2022

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