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The AAPG/Datapages Combined Publications Database

Showing 5,117 Results. Searched 195,372 documents.

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Near-Shore Ripples: Some Hydraulic Relationships

A. S. Trenhaile

Journal of Sedimentary Research (SEPM)

... the ripple reached the break point of the waves. Keeping the same wave characteristics, each experiment was repeated three times, using different...

1973

Delineation of the Reservoir by Seismic Methods: Chapter 3

Roberto Sarmiento

AAPG Special Volumes

.... Higher frequencies are not recorded because of the combination of the outputs of several geophones on the ground attenuates high frequency. If we were...

1989

Seismograph Interpretation as Related to Changes in Sedimentary Section in West Texas and New Mexico

John Daly , C. N. Page

AAPG Bulletin

... the average velocity from a datum plane to the top of the Ellenburger is shown. This represents the average velocity for travel of sound waves through...

1952

Application of Seismography to Geological Problems

Eugene McDermott

AAPG Bulletin

..., the velocity of a wave is different in the two ropes. A wave travelling down the light rope from its starting point at A is partly refracted...

1931

High Resolution “Vibroseis” Data – Compressional and Shear-Wave Modes

D. E. Miller, D. E. Dunster

Pacific Section of AAPG

... frequencies of seismic waves is more nearly wavelength dependent than frequency dependent. Thus, if the usable P-wave reflection spectrum is cut off...

1972

Meramec Velocity Systematics

Jing Fu, Carl Sondergeld, Chandra Rai

Unconventional Resources Technology Conference (URTEC)

... difference in measurement frequencies. The Meramec velocity systematics are considerably different from published systematics. The Meramec shear-wave...

2020

Application of Wave Equation Tomography in Frontier Areas

Tien-when Lo, Guy W. Purnell

Indonesian Petroleum Association

... Fourier transform of the scattered wavefield at each frequency, calculating the object function O(r) at those frequencies. The velocity profile C(r...

1990

Sand Movement Along Equilibrium Beaches North of San Francisco

John A. Cherry

Journal of Sedimentary Research (SEPM)

... group classified as opaques and others. The frequencies of the various mineral species were computed using the sum of the transparent grains counted...

1966

Structural Modification of Corals in Relation to Waves and Currents: Reef Biota

Richard R. Graus , John A. Chamberlain Jr. , Alexa M. Boker

AAPG Special Volumes

...). As the current decreases in velocity, the oscilla ory effect of waves passing over the reef crest becomes the dominant hydraulic factor. These waves...

1977

Experience with Surface and Downhole Vector Wavefield Recording in Central Sumatra

Eddy Murhantoro, Jeff Wright

Indonesian Petroleum Association

... to lithology. To increase the S-waves velocity data base, three additional wells were recorded using the airgun source in a pit. These data enabled...

1989

Processes Affecting Sand Transport on a Storm-Dominated Shelf

Christopher E. Vincent

CSPG Special Publications

.... Local wind-waves and swells have different influences on transport, and dominate in different regions of the shelf; the swell is largely unrelated...

1986

NMO Inversion for Multilayer Subsurface with Horizontal Transverse Isotropic layers

E. Blias

Search and Discovery.com

... the group velocity vP and group angle ȥ:: VP (\ ) V0  1 w 2VP 2 w\ 2 2 1 w 4VP · §S \ ¸  ¨ 24 w\ 4 ¹ ©2 4 · §S ¨  \ ¸  ... ¹ ©2 A reflaction...

Unknown

NMO Inversion for Multilayer Subsurface with Horizontal Transverse Isotropic layers

E. Blias

Search and Discovery.com

... the group velocity vP and group angle ȥ:: VP (\ ) V0  1 w 2VP 2 w\ 2 2 1 w 4VP · §S \ ¸  ¨ 24 w\ 4 ¹ ©2 4 · §S ¨  \ ¸  ... ¹ ©2 A reflaction...

Unknown

Porosity prediction from seismic attributes of the Ordovician Trenton-Black River groups, Rochester field, southern Ontario

O. C. Ogiesoba

AAPG Bulletin

.... Attenuation of high frequencies by the rock medium increases as the porosity of the rock increases. Thus, when seismic waves encounter faulted or fractured...

2010

Data Enhancement from a 486-Channel Streamer

Bill Dragoset, Ken Larner

Pacific Section of AAPG

... at the different array elements in a laterally offset group. As a result, long arrays degrade recordings of these events – especially their high...

1980

Synthetic Seismograms from Vibracores: A Case Study in Correlating the Late Quaternary Seismic Stratigraphy of the New Jersey Inner Continental Shelf

Dominic Esker , Robert E. Sheridan , Gall M. Ashley , Jeffrey S. Waldner , David W. Hall

Journal of Sedimentary Research (SEPM)

... and deepwater marine sediments of porosity, density, and the velocity of compressional and shear waves: Geophysics, v. 22, p. 523-552. ORSI, T.H....

1996

Hydraulic Fracture Monitoring Using Distributed Acoustic Sensing: A Case Study Using Dip-in Fiber

Chaoyi Wang, Yuanyuan Ma, David Eaton, Kelly MacDougall, Carolyn Furlong

Unconventional Resources Technology Conference (URTEC)

... velocity of approximately 950 m/s, which is too slow to be conventional tube waves. We refer to these events as ‘fiber waves’ as they appear to propagate...

2022

The Composition of Seismic Reflections: Abstract

J. P. Woods

Tulsa Geological Society

... of the acoustic model and the results. Series of reflections are shown to illustrate different conditions within the apparatus. When one thick seismic layer...

1956

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

David W. Bell

AAPG Special Volumes

... depth interval. Note that points at different depths that have the same velocity also have the same effective pressure. Velocity plotted vs...

2001

Non-Seismic Detection of Hydrocarbons: An Overview; #40392 (2009)

Dietmar "Deet" Schumacher

Search and Discovery.com

... are at specific frequencies which are harmonics and subharmonics of 60 or 50 cycles, depending on the local power grid. The waves propagate as plane waves...

2009

Broadband Data from Flat Streamers: Considerations for Acquisition and Processing

Phil Fontona, Edward Hager

Indonesian Petroleum Association

... m deep receiver, thus optimizing the potential signal-to-noise at those notch frequencies. FIELD TRIALS A test line was shot with different broadband...

2015

Tank Experiments on the Sorting Of Beach Material During Cusp Formation

N. C. Flemming

Journal of Sedimentary Research (SEPM)

.... Mean settling velocity is 30.5 cm/sec and mean sphericity is 0.68. FIG. 14. Contour diagram for the density of points per unit square for the sum...

1964

The Developing Role of Analysis in the Design of Floating Production Systems

D. B. Melver, D. Cash

Indonesian Petroleum Association

... be applied through the linearisation which is then possible. The pressure field round a moving structure in waves may then be expressed as the sum...

1985

Wave and Bottom Sediment Interactions over a Submerged Sand Bank during the Winter Cold-Front Season, Western Louisiana

Daijiro Kobashi, Felix Jose, Gregory Stone

GCAGS Transactions

... backscatter sensor (OBS) data representing turbidity, shear velocity and shear stress due to waves are given in Figure 2. In general, waves...

2006

Application of finite difference eikonal solver for traveltime computation in forward modeling and migration

Amir Mustaqim Majdi, Seyed Yaser Moussavi Alashloo, Nik Nur Anis Amalina Nik Mohd Hassan, Abdul Rahim Md Arshad, Abdul Halim Abdul Latiff

Geological Society of Malaysia (GSM)

... upward to the receiver later (Claerbout, 2010). The different arrival time of the waves propagating from the source back to the receiver is used...

2021

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