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The AAPG/Datapages Combined Publications Database

Showing 34,457 Results. Searched 200,357 documents.

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Ascending

From Transition Zone to Core Complex: Deep Reflection Seismic Imaging of the Basin and Range, Southeast Arizona

Joseph M. Kruger, Roy A. Johnson

Pacific Section of AAPG

...: Journal of Geophysical Research, v. 96, p. 13,485-13,507. Jones, T. and Nur, A., 1982, Seismic velocity and anisotropy in mylonites and the reflectivity...

2001

Abstract: Velocity for Pore Pressure Prediction Modeling and Risk Assessment; #90256 (2016)

Selim Simon Shaker

Search and Discovery.com

... of geopressure and consequently apply the correct algorithm’s calculation in the deeper over-pressured section. The appropriate interval velocitydepth...

2016

Using Multiple Downhole VSP Arrays for Monitoring and Locating Passive Microseisms in the Oil Reservoirs; #41561 (2015)

Zuolin Chen

Search and Discovery.com

... depth of the 3-D grid. The pre-conditions of the numerical experiments are as follows:     A constant velocity model (Vp=4000 m/s) The picking error...

2015

The Effects of Sediment Concentration and Tube-Diameter on Particle Settling Velocity Measured Beyond Stokes' Range: Experiment and Theory

C. J. Lovell , C. W. Rose

Journal of Sedimentary Research (SEPM)

.... Lovell , C. W. Rose 1991 Vol. 61 No. 4. (July), The effect of initial sediment concentration on settling velocity distributions measured by the modified...

1991

Mapping Shallow Horizons with Reflection Seismograph

L. C. Pakiser , D. R. Mabey , R. E. Warrick

AAPG Bulletin

.... A 2-ounce charge was fired at a depth of 20 feet, below the base of the low-velocity weathered layer. The filters were set for the frequency band...

1954

Integrating an exploration OBN into a full-scale prospect maturation workflow: Gulf of Mexico Lower Tertiary

Scott Yurman, Marcus Cahoj

International Meeting for Applied Geoscience and Energy (IMAGE)

... trends will continue to increase with depth. A deviation or reversal is present in the velocity response when the onset of overpressure occurs...

2022

A three-component field study of the effect of the low-velocity layer on converted-wave seismic data

Dan Cieslewicz, Don C. Lawton

CSPG Special Publications

...A three-component field study of the effect of the low-velocity layer on converted-wave seismic data Dan Cieslewicz, Don C. Lawton 1998 217 220...

1998

Coupled channel–floodplain dynamics and resulting stratigraphic architecture viewed through a mass-balance lens

Kyle M. Straub, Ripul Dutt, Robert A. Duller

Journal of Sedimentary Research (SEPM)

... a characteristic flow velocity. Our choice of a 10 mm channel depth, which is larger than H50, accounts for the fact that deeper channels contribute...

2023

Method to Produce Grain-Scale Digital Images of Large Experimental Sedimentary Deposits and Other Imperfectly Flat Stratigraphy

Jim Mullin, Chris Ellis

Journal of Sedimentary Research (SEPM)

... conventional solutions unworkable. For instance, when slicing the deposit in the dip or streamwise direction, the first slices are made by digging a 30-cm...

2008

RhoVe T Method Empirical Velocity-Density-Temperature-Effective Stress Transform

Matt Czerniak

GCAGS Transactions

... effects. Methods Virtual Model Construct At its simplest, the RhoVe method transforms the velocity-“virtual” depth compaction trend “α” series (see...

2019

Structural and Tectonic Evolution of Oceanic Crust within the Jurassic Quiet Zone, Offshore Morocco: Chapter 14: African and Mediterranean Margins

James S. Holik, Philip D. Rabinowitz

AAPG Special Volumes

.... With CDP data, the effect of dip is minimized. The depth of resolution is less using CDP velocity analysis relative to sonobuoy analysis since...

1992

Logging Rotary Wells from Drill Cuttings

Stuart K. Clark , Jas. I. Daniels , J. T. Richards

AAPG Bulletin

... possible sources of errors in determining the depth which is represented by the sample; those due to inaccuracies in determining the depth at which...

1928

Oil Below Water: Perched Water and High Order Sealing Elements, Implications for Exploration in Stratigraphic Traps; #42310 (2018)

Michael Lee, Cory Clechenko

Search and Discovery.com

... of pinchouts, stacking changes, NTG decreases, thinning, and highorder counter dip/perched waters Water expulsion during charge is a critical process...

2018

Base-Level Buffers and Buttresses: A Model for Upstream Versus Downstream Control on Fluvial Geometry and Architecture Within Sequences

John Holbrook, Robert W. Scott, Francisca E. Oboh-Ikuenobe

Journal of Sedimentary Research (SEPM)

.... These distances stretch the limits of up-dip effect from a downstream base-level change, and likely overextend the applicability of downstream...

2006

Influence of node position uncertainty on FWI and Mirror-RTM

Felipe Capuzzo, Marco Cetale, Sergio Luiz da Silva, Roger Moreira, Felipe T. Costa, Ammir A. Karsou, Jorge Lopez

International Meeting for Applied Geoscience and Energy (IMAGE)

... their influence on imaging. Our results show that uncertainties in OBN positioning can lead to errors in the recovered velocity models obtained from FWI, which...

2023

Advances in Geophysical Techniques for the Detection of Drilling Hazards and Their Application to Seismic Exploration

D. C. N. Pratt, Tong Pow Mun

Southeast Asia Petroleum Exploration Society (SEAPEX)

... of reflectors to be imaged. X min ≥ V a 2 T a f Where X (min) is the minimum cable length V is the stacking velocity T is the TWT...

1990

A Simple Universal Equation for Grain Settling Velocity

R.I. Ferguson, M. Church

Journal of Sedimentary Research (SEPM)

... (1990, p. 18). Table 1. Mean and root-mean-square (rms) percentage errors in predicting experimental values of fall velocity. As would be expected, when...

2004

Chapter 8: Johan Castberg: The First Giant Oil Discovery in the Barents Sea

Ketil Sollid, Leif Bjørnar Henriksen, Jan Ove Hansen, Olaf Thießen, Alf Ryseth, Simon Knight, Audun Groth

AAPG Special Volumes

... depth consistent brightening is seen at the same depth as the structural spill. Figure 33. WG08 seismic profile along a dip-line across the Havis...

2021

Analysis of Geophysical Well Logs from the Mariano Lake-Lake Valley Drilling Project, San Juan Basin, Northwestern New Mexico

James H. Scott

AAPG Special Volumes

...) record the diameter of the borehole as a function of depth. Variations in borehole diameter have a significant effect on all the logs discussed...

1986

Sequence Stratigraphic Correlation of Well-Log Cross Sections

James W. Mulholland

Rocky Mountain Association of Geologists

... separating younger from older strata across which there is evidence of an abrupt increase in water depth." The difference in the bounding surfaces...

1994

Implementation aspects of elastic FWI and its application to sparse OBN surveys

Cosmin Macesanu, Faqi Liu, Yi Huang, Hao Hu, Carlos Calderón

International Meeting for Applied Geoscience and Energy (IMAGE)

... manifested as a change in velocity in a direction perpendicular to the interface. This effect is proportional to the finite difference (FD) grid size...

2024

Abstract: Velocity Dispersion in Field Seismic Data: Impact, Detection and Application; #90211 (2015)

Langqiu Sun

Search and Discovery.com

... to 180Hz. Figure 1. Distorted correlation wavelet versus “squeezing” time of the Vibroseis chirp, to simulate the effect of linear velocity...

2015

Geohistory Analysis--Application of Micropaleontology in Exploration Geology

J. E. Van Hinte

AAPG Bulletin

... of years, and to express depositional environments in terms of water depth. Geohistory diagrams and numerical stratigraphic techniques...

1978

Preserved Stratigraphic Architecture and Evolution of A Net-Transgressive Mixed Wave- and Tide-Influenced Coastal System: The Cliff House Sandstone, Northwestern New Mexico, U.S.A.

Oliver D. Jordan,, Sanjeev Gupta, Gary J. Hampson, Howard D. Johnson

Journal of Sedimentary Research (SEPM)

... exhibits a facies composition and quantitative stacking patterns (shoreline trajectory) similar to other studied examples, differences in the dip-extent...

2016

Overcoming Historical Biases: An Integrated Geological and Engineering Assessment of the Coniston Prospect, Exmouth Sub-Basin

N. Smith, C. Dempsey, M. Jackson, J. Preston

Petroleum Exploration Society of Australia (PESA)

... conversion, since data quality is generally excellent for picking the Top Reservoir seismic event. Two key effects distort the depth structure - the dip...

2002

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