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The AAPG/Datapages Combined Publications Database

Showing 3,212 Results. Searched 200,357 documents.

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ABSTRACT: Lithification of 65-Year-Old Carbonate Spoils Piles; #90113 (2010)

Nathan M. Snyder

Search and Discovery.com

... are on the leeward side of Stocking Island and are exposed to minimal wave energy. The spoils are composed of small to medium sand-sized aragonite...

2009

Quantitative Petrophysical AVO Error Analysis in a Layered Model

Search and Discovery.com

... to inversion errors. Using plane-wave AVO theory to invert spherical-wave data (Haase and Ursenbach, 2007), or using isotropic AVO theory to invert...

2013

Organoporosity versus Mineral Matrix Porosity in the Calculation of Reserves in Shale Reservoirs

G. B. Asquith

West Texas Geological Society

... is correct? The Maxwell-Garnett Equation which was designed model large spherical pores in bedded in finer spherical matrix pores (i.e. a vuggy...

2013

Graded Beach Gravels as Palaeowind Indicators

John McManus

Journal of Sedimentary Research (SEPM)

... and shell beach developed under stable wave and tidal conditions. Modifications related to variations of wave incidence angle are described in plan...

1973

Computed Sediment Grain Surface Areas

George Shumway, Kim Igelman

Journal of Sedimentary Research (SEPM)

... computed for 109 natural sediment samples ranging from sands to clays. This was done by assuming all particles to be spherical and summing the areas...

1960

Multifocusing Stack Technique for Subsurface Imaging, #40749 (2011)

Sunjay Sunjay,

Search and Discovery.com

... in the conventional CMP stacking. Analytical expressions (based on the spherical representation of wavefronts) describe the moveout correction...

2011

Abstract: Seismic Dispersion in Extra-Heavy Oil Saturated Rock; #90172 (2014)

Todd D. Bown, Douglas R. Schmitt

Search and Discovery.com

..., an understanding of the basic rock physics for rocks saturated with such oils has lagged. There are few studies in the literature that examine seismic wave...

2014

Pressure Build-Up Interpretation in Wells with Limited Entry Completions: Unexpected Pressure and Afterflow Response

Reinhard H. Lind

Indonesian Petroleum Association

... off for infinite acting radial flow, but keeps declining at a slope of about minus half. It is shown that this behaviour is characteristic of spherical...

1990

Inverse scattering theory: Time-dependent perturbation theory for wave scattering in time varying media

Xingguo Huang, Ru-Shan Wu, Pan Zhang, Wenrui Ye, Morten Jakobsen

International Meeting for Applied Geoscience and Energy (IMAGE)

...Inverse scattering theory: Time-dependent perturbation theory for wave scattering in time varying media Xingguo Huang, Ru-Shan Wu, Pan Zhang, Wenrui...

2022

Diverse Stromatolite Forms from the Upper Devonian of Saskatchewan

W. L. Kaufmann

CSPG Bulletin

... nomenclature proposed by Logan et al. (1962 & 1964). Structures present included (1) spherical structures (SS); (2) composite forms of spherical...

1964

Practical Applications of Amplitude-vs-Offset Analysis in Expanded Yegua Exploration

James L. Allen

Houston Geological Society

... Near offset vs Far offset Maintaining true amplitude at all offsets Compensation for spherical divergence NMO Stretch Multiples "Good...

1989

Wave scattering by the formation velocity perturbation surrounding a fluid-filled borehole

Zhou-Tuo Wei

International Meeting for Applied Geoscience and Energy (IMAGE)

... field Φ0 in formation is approximately a spherical wave:   R  A exp   i  t  0   c0     (2) 0  R0 where, A is wave amplitude. Putting...

2022

Abstract: P- and S-Wave Velocity Measurements and Pressure Sensitivity Analysis of AVA Response; #90211 (2015)

Tiewei He and Douglas Schmitt

Search and Discovery.com

...Abstract: P- and S-Wave Velocity Measurements and Pressure Sensitivity Analysis of AVA Response; #90211 (2015) Tiewei He and Douglas Schmitt...

2015

Armoured mud balls revisited

Lawrence H. Tanner

Atlantic Geology

..., on the north shore o f the Minas Basin. Shapes vary from nearly spherical to platy to elongate, with elongate predominant. The mud balls form from the action...

1996

Cold-water Spherical Grains from a Fresh-Water Drainage Pipe, Gordon Dam, Tasmania, Australia

C. Prasada Rao, I. H. Naqvi

Journal of Sedimentary Research (SEPM)

...Cold-water Spherical Grains from a Fresh-Water Drainage Pipe, Gordon Dam, Tasmania, Australia C. Prasada Rao, I. H. Naqvi 1983 Vol. 53 No. 4...

1983

Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 1: Theoretical Developments; #90171 (2013)

Arnim B. Haase and Robert R. Stewart

Search and Discovery.com

... [email protected] and Robert R. Stewart University of Houston Summary The complete spherical wavefield emanating from a P-wave point source surrounded...

2013

Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology

Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia

Indonesian Petroleum Association

... processing flows for both PP and PS waves were laid out to improve the structural and reservoir images. Particularly for PS converted wave data, apart from...

2014

Examining the significance of the converted-modes beneath an ultra-high-velocity caprock: Physical modeling and a Gulf of Mexico salt proximity VSP survey

Jingjing Zong, Yukai Wo, Jizhong Yang, Nikolay Dyaur

International Meeting for Applied Geoscience and Energy (IMAGE)

... shots. Physical modeling wavefield analysis The spherical piezoelectric-transducer used in physical modeling is essentially a pressure sensor...

2022

Joint OBN and 3D DAS-VSP data acquisition and processing in East China Sea

G. Yu, G. M. He, Z. L. Cao, H. B. Liu, J. J. Li, Y. Z. Chen, J. J. Wu, J. G. Li, X. M. Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... range and improves the overall 3-D DAS-VSP imaging quality. The 3D DAS-VSP downgoing multiple reflection wave imaging shows significant imaging...

2022

Cretaceous-Tertiary Boundary Microtektite-Bearing Sands and Tsunami Beds, Alabama Gulf Coastal Plain

David T. King Jr., Lucille W. Petruny

GCAGS Transactions

... spherical microtektites display an internal structure that includes intact smaller spherical droplets adhered to infolded inner walls...

2005

Sedimentology of Fault-Scarp-Derived Colluvium from the 1983 Borah Peak Rupture, Central Idaho

James P. McCalpin , Witold Zuchiewicz, L. C. Allen Jones

Journal of Sedimentary Research (SEPM)

..., LAJOIE, K.R., AND WALLACE, R.E., 1984, Modification of wave-cut and faulting-controlled landforms: Journal of Geophysical Research, v. 89, no. B7, p...

1993

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