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The AAPG/Datapages Combined Publications Database

Showing 7,688 Results. Searched 195,354 documents.

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ABSTRACT: Geostatistical Recipes for Near Surface Modeling; #90051 (2006)

Aldo Vesnaver, Ralph Bridle, Robert Ley, Robert W. Rowe

Search and Discovery.com

.... The seismic spatial sampling of the near surface is insufficient both laterally and vertically for th e p u rp ose of modeling and c orrec ting for the tim e...

Unknown

Building a three-dimensional near-surface geologic and petrophysical model based on borehole data: A case study from Chemery, Paris Basin, France

Paola Sala, Marcel Frehner, Nicola Tisato, O. Adrian Pfiffner

AAPG Bulletin

... near-surface layer, or the velocity of the deeper unweathered layers (Telford et al., 1990). From the seismic traveltime-depth relationships measured...

2013

Integration of Geologic Data into Structural Imaging of the Andean Subthrust, Peru; #41605 (2015)

Margaret A. Stratton, Robert Vestrum, Dennis Ellison

Search and Discovery.com

... the geological complexity is the highest. Combined with low fold near the surface, the depth-migration velocity model is underconstrained. Geologic...

2015

The Detection of Gaseous Hydrocarbon Accumulations by Seismic Interference Patterns and Lateral Velocity Variations

M. A. Buskala

Wyoming Geological Association

... an intrinsic part of a record section. The interference is generally from two sources; one generated near or at the surface by the energy source...

1978

Shallow Velocity Model Building Considerations for Prestack Depth Migration in Unconventionals

Mike Perz, Josef Heim, Candace Bruins

Unconventional Resources Technology Conference (URTEC)

.... (a) before; (b) after. Both of the sophisticated shallow model building schemes (rows 2 and 7, Table 1) require injection of spatially-varying near-surface...

2019

Numerical Models of Fluid Flow in Carbonate Platforms: Implications for Dolomitization

Jonathan Kaufman

Journal of Sedimentary Research (SEPM)

... phase of subsidence. Most pore fluids in the shale migrate to the surface at velocities less than 0.1 mm/yr and basin-derived fluids are focused...

1994

Abstract: Turning-Ray Tomography and Tomostatics; #90224 (2015)

Babatunde Arenrin, Gary Margrave, and John Bancroft

Search and Discovery.com

... tomography is a good tool for estimating near surface velocity structure, especially in areas where conventional refraction statics fail...

2015

Seismic Imaging and Interpretive Model Building in the Colombian Andes

Rob Vestrum

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

.... With low fold in the near surface, a low signal-to-noise ratio on the image gathers, and complex horizon geometries, automated velocity-model-building...

2006

Gas Hydrates in Ocean Bottom Sediments

M. K. MacLeod

AAPG Bulletin

... to base of a gas hydrate. A temperature profile through 3,000 ft (914 m) of Arctic water and the near surface sediments would follow arrows, assuming...

1982

Abstract: Analysis of Geotechnical Parameters from Geophysical Information; #90255 (2017)

O. O. Adewoyin, E. O. Joshua, M. L. Akinyemi, M. Omeje, E. S. Joel, O. T. Kayode

Search and Discovery.com

... geotechnical properties necessary for foundation design for proposed engineering facilities. Seismic wave velocities generated from near surface...

2017

SEISMIC EXPLORATION IN BLAINE AND PHILLIPS COUNTIES, MONTANA, AND ADJACENT PARTS OF CANADA

S. W. FRUEHLING

Montana Geological Society

... to be of low relief. Thus the necessity of achieving a high degree of accuracy of the near surface corrections is quite obvious...

1953

Determination of Velocity Model by Using NIP-Wave Tomographic Inversion: Application to Synthetic and Real Data

A. Hendriyana, R. Sule, Y. Akbar, L.A. Poerwaka, T.A. Sanny, Sardjito, Waluyo, Adriansyah

Indonesian Petroleum Association

... of two hypothetical waves, Normal Incidence Point (NIP) and normal (N)-wave (Hubral, 1983). Apart from near surface velocity, , CRS-stack operator does...

2009

Analysis of Geotechnical Parameters from Geophysical Information; #70254 (2017)

O. O. Adewoyin, E. O. Joshua, M. L. Akinyemi, M. Omeje, E. S. Joel, O. T. Kayode

Search and Discovery.com

... facilities. Seismic wave velocities generated from near surface refraction method was used to determine the bulk density of soil, Young’s modulus...

2017

Abstract: Geostatistics and Gradient-Based Structure Coupling for Integration of Uphole Data with Tomography; #91204 (2023)

Ersan Turkoglu, Daniele Colombo, Ernesto Curiel, Hala Alqatari

Search and Discovery.com

... and detailed near-surface velocity models. Tomographic or full waveform inversions provide detailed velocity models but accuracy of these models at very...

2023

ABSTRACT: TUTORIAL: IMAGING THROUGH SHALLOW GAS, DIVING WAVE

Brian Broussard, Luis Canales, Charles Carvill, Lee Lu, Juan Perdomo, Chung-Chi Shih, Sherman Yang, Peter Melville, Mehmet Tanis

Geological Society of Trinidad & Tobago

... beneficial near-surface models in the presence of gas and in areas with low signal-to-noise ratio reflection data. Fundamentally, because DWT resolves rapidly...

2007

Abstract: Elastic Finite-difference Modeling for Testing Acquisition and Processing Methods; #90187 (2014)

Peter Manning, Joe Wong, and David Henley

Search and Discovery.com

...). The models include an overburden and a weathered layer with very low P and S velocities and varying thicknesses. The common source gathers of the vertical...

2014

Applications of Shallow High-Resolution Seismic Reflection to Environmental Problems

Richard D. Miller, William E. Doll, Carlene Merey, William E. Black

Environmental Geosciences (DEG)

...-effective method of imaging geologic targets relevant to near-surface site classification and eventual remediation. Reflection proved effective...

1994

Effects of near Surface Lithology on Velocity Modelling and Time„Depth Relationships in the Cooper„Eromanga„Lake Eyre Basin

Anna Manka, Glen Buick, Rob Menpes, Luke Gardiner, Cameron Jones, Khalid Amrouch

Australian Petroleum Production & Exploration Association (APPEA) Journal

... velocity model of the near surface. Variations of layer thickness and seismic velocity were input into Monte Carlo simulations to investigate sensitivities...

2018

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

Walt Ritchie and Mihai Popovici

Search and Discovery.com

... introduced by the near-surface conditions in the area provided the basis from which a depth-imaging solution could be initiated. Model Building Process...

2009

Abstracts: A Practical Approach for Estimating Receiver Statics in 2D/3C Seismic Data Processing; #90173 (2015)

Dumitru Ion and Mike Galbraith

Search and Discovery.com

... for the horizontal components. The near surface, both in seabed and in land acquisition, is frequently associated with low, laterally varying shear-wave...

2015

First-Arrival Traveltime Inversion in the CMP Domain: Method and Application

Search and Discovery.com

..., and Zhu et al., 2000) which derives the near-surface velocity model based on traveltime reconstruction. The other approach is to map apparent velocities...

2013

Gravity and Magnetics in South East Asia - Modern Applications

Brian S. Anderson, John E. Bain, Harald van Hoeken, Mark E. Weber

Southeast Asia Petroleum Exploration Society (SEAPEX)

... model An initial 2D depth model is generated using the seismic derived salt geometry and sediment velocities. Laterally varying density data obtained...

1996

Three Dimensional Seismic Inversion and Neural Net Impedance Facies Map in Reservoir Characterization

Sunit K. Addy, Jim Hallin

GCAGS Transactions

... calculated from the regular seismic data. These include horizon amplitude, near surface geometry, dip, azimuth and their derivative and others. The horizon...

2000

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