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The AAPG/Datapages Combined Publications Database

Showing 952 Results. Searched 195,697 documents.

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Origins of overpressure in the central Xihu depression of the East China Sea shelf basin

Jun Li, Jingzhou Zhao, Zhiqiang Hou, Shuping Zhang, and Mengna Chen

AAPG Bulletin

... with the normal compaction trend or conforms to a higher level of normal compaction as the depth increases. In the sonic velocity–effective stress diagram...

2021

Analysis of Sonic Well Logs Applied to Erosion Estimates in the Bighorn Basin, Wyoming

Henry P. Heasler , Natalya A. Kharitonova

AAPG Bulletin

... by other workers (Rubey and Hubbert, 1959; Magara, 1976a; Sclater and Christie, 1980; Korvin, 1984). Linear porosity-depth relationships have been...

1996

A Method for Lithogenetic Subdivision of Pannonian (s. l.) Sedimentary Rocks: Chapter 8

A. Szalay, K. Szentgyorgyi

AAPG Special Volumes

... drawing (c) (opposite, bottom) shows an interpretation of parts A and B. Depth was converted to two-way traveltime using the velocity-depth functions...

1988

Brine volume and salt dissolution rates in Orca Basin, northeast Gulf of Mexico

Robin S. Pilcher, Raleigh D. Blumstein

AAPG Bulletin

... and 4.3 mi) (Figure 2). The midwater seismic reflector occurs at a TWT of 3005 ms, equating to a depth of 2251 m (7385 ft) if an average seawater velocity...

2007

Divergent Wrench Faulting in the Belize Southern Lagoon: Implications for Tertiary Caribbean Plate Movements and Quaternary Reef Distribution

Maria Ester Lara

AAPG Bulletin

... on the synthetic seismograms. From left to right, columns show depth in well Palmetto Cay 1 (in feet), two-way traveltime in seismic section (in milliseconds), sonic...

1993

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

Sunjay Sunjay,

Search and Discovery.com

... constitutes a key first step that facilitates the estimation of a velocity model for depth imaging. For these reasons, improving the quality of time...

2011

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

O. C. Ogiesoba

AAPG Bulletin

... in the Rochester field are due to the combined effects of low-velocity pushdown and faulting. Methods and results presented in this study can be used...

2010

Seismic Modeling of Acid-Gas Injection in a Deep Saline Reservoir

Search and Discovery.com

... Gassmann’s equations, the traveltime difference is seen to be on the order of a quarter millisecond for each 10 m thickness of the acid-gas plume...

2013

New tools for seismic stratigraphic interpretation: Stratal convergence and instantaneous isochron attribute cubes derived from volumetric flattening of experimental strata

Jesse Lomask, Jason M. Francis, James Rickett, Marc L. Buursink, Thomas P. Gerber, Martin Perlmutter, Chris Paola

AAPG Bulletin

... was created from a series of closely spaced images. Depth was converted to traveltime using a constant velocity, and gray-scale intensities (because...

2009

A cross-shape deep Boltzmann machine for petrophysical seismic inversion

Son Dang Phan and Mrinal K. Sen

AAPG Bulletin

... traveltime. Figure 11. The predicted shale volumetric (Vshale) section from a trained cross-shape deep Boltzmann machine network. CDP = common depth point...

2022

Use of Seismic Surveying with the Method of Regulated Directional Reception in Exploration for Reefs in the Southern Cis-Urals

F. I. Khat’yanov, Ya. I. Shul’ts, V. V. Kuryayeva

Petroleum Geology: A Digest of Russian Literature

..., exploration of the reef masses which occur at great depth (1500-2500 m) is difficult and expensive. Such exploration is carried out by combined geophysical...

1963

An approach to reduce exploration risk using spectral decomposition, prestack inversion, and seismic facies classification

Carlos Jesus, Wagner Moreira Lupinacci, Patricia Takayama, Joana Almeida, and Danilo Jotta Ariza Ferreira

AAPG Bulletin

.... Zdraveva, 2010, Building tilted transversely isotropic depth models using localized anisotropic tomography with well information: Geophysics, v. 75...

2020

4D Finite Difference Forward Modeling within a Redefined Closed-Loop Seismic Reservoir Monitoring Workflow, #41922 (2016).

David Hill, Dominic Lowden, Sonika, Chris Koeninger

Search and Discovery.com

.... Such an in depth understanding cannot be achieved using one of the more traditional Sim-to-Seis type workflows. Introduction The history of closed-loop seismic...

2016

Forward Modeling of Seismic Data: Part 7. Geophysical Methods

George Mellman, Paul A. Kunzinger

AAPG Special Volumes

..., two, or three dimensional and consist of depth horizons and associated P wave velocities, S wave velocities, and densities The most common use...

1992

Production Logging: Part 9. Production Engineering Methods

James J. Smolen

AAPG Special Volumes

... be encountered, are evaluated using flowmeters with fluid identification devices. The most effective technique with radioactive tracers is the velocity shot...

1992

Mobile Shale in the Niger Delta: Characteristics, Structure, and Evolution

Richard W. Wiener, Michael G. Mann, Michael Terry Angelich, Joseph B. Molyneux

AAPG Special Volumes

...; obs. = observed; 50 km = 31.1 mi.Regional seismic velocity data were used for depth conversion of seismic lines and analysis of regional velocity...

2010

Deep Sea Stratigraphy: Abyssal Sediment Waves

G. S. Mountain and B. E. Tucholke

AAPG Special Volumes

... traveltime and in depth. The accompanying line drawing in time shows irregular discontinuous reflectors immediately above the erosional unconformity...

1987

Effects of Methane Hydrate on the Physical Properties of Sediments

William J. Winters, William F. Waite, David H. Mason

AAPG Special Volumes

... measured compressional wave velocity (Vp) changes with the extent to which the pore material cements sediment grains. Hence, for equal effective stresses...

2009

Effect of Zechstein Supergroup (Z1 cycle) Werrahalit pods on prospectivity in the southern North Sea

John R. Underhill, Kirsten L. Hunter

AAPG Bulletin

.... The velocity effect has led to major discrepancies between prognosed and actual depth for deeper, highly prospective, Rotliegend Group, Leman Sandstone Formation...

2008

Three-Dimensional Seismic Analysis in the Characterization of a Giant Carbonate Field, Onshore Abu Dhabi, United Arab Emirates

Peter Melville, Omar Al Jeelani, Saeed Al Menhali, Jürgen Grötsch

AAPG Special Volumes

... with arrows).The combination of the 3-D seismic data and the well data to make a depth map has revealed a very good relationship of velocity to depth...

2004

ABSTRACT:MULTICOMPONENT OBC (4C) PRESTACK TIME IMAGING OVER PAMBERI, LRL BLOCK, OFFSHORE TRINIDAD

Tony Johns, Carmen Vito and Raul Sarmiento

Geological Society of Trinidad & Tobago

... be achievable through depth tomography with more detailed anisotropic traveltime ray tracing. The remarkable amplitude differences noted (of shear...

2007

Onshore–offshore correlations of Cretaceous fluvial-deltaic sequences, southern Baltimore Canyon trough

William J. Schmelz, Kenneth G. Miller, Gregory S. Mountain, James V. Browning, and Kimberly E. Baldwin

AAPG Bulletin

... surveys were primarily used to convert log measurements and biostratigraphic picks from depth to two-way traveltime (TWTT). Regional Time–Depth...

2020

The Role of Fault Interaction and Linkage in Controlling Synrift Stratigraphic Sequences: Late Jurassic, Statfjord East Area, Northern North Sea

Nancye H. Dawers and John R. Underhill

AAPG Bulletin

... has not been depth converted. Although velocity variations in detail may affect the patterns observed in synrift thickness and fault throw, well...

2000

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

3.4 Detached Sediments: 3.4.2 Decollement Tectonics (B-Subduction) and Active Margins: Compressional Features Across the Caribbean Margin of Colombia

J. W. Ladd and M. Truchan

AAPG Special Volumes

... prism from CDP 1800, the top of oceanic crust projects to about 12 secs two-way traveltime at CDP 3200. With an average sediment velocity of 2 to 3 km...

1983

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