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The AAPG/Datapages Combined Publications Database
Showing 604 Results. Searched 200,691 documents.
Combined elastic FWI of accelerometer and DAS VSP data from a CO2 sequestration test site in Newell County, Alberta
Matthew Eaid, Scott Keating, Kristopher Innanen
International Meeting for Applied Geoscience and Energy (IMAGE)
... P-wave velocity, and (e) Crossplot of density versus P-wave velocity at a depth below the near surface that best explains the data. Because we...
2022
Lateral Changes in Seismic Velocities and Their Effect on Depth Prediction
J. Pinchin, M. Bayly
Petroleum Exploration Society of Australia (PESA)
... stacking velocities can be used for regional depth predictions, their detailed use in areas of rapid lateral velocity variations can produce erroneous...
1989
Production Log Analysis Challenges Due to Liquid Loading in Inclined Gas Wells
J.J. Kohring, E.A. Nnebocha
Indonesian Petroleum Association
... 26 vs. 28 vs. 30) c. Critical unloading velocity depth for lifting liquids is 2420m at Q2/3max and 2450m at Q1/3max d. Terminal fall velocity located...
2010
From Sedimentary Structures to Facies Models: Example From Fluvial Environments
J. C. Harms, J. B. Southard, D. R. Spearing , R. G. Walker
Special Publications of SEPM
... velocity. Grain size and flow depth may also have changed during ripple migration. interpretation. In this way, each facies is characterized...
1975
Seismic Acquisition and Processing for Sub-thrust Imaging and Prospecting, Suaza Valley, Colombia
G.W.Paukert, G. Billings, I.Dawes, T.D.J. England, G.Rait
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... to basement velocity. The depth map presented was constructed using a basement velocity of 4200 m/s. Vertical closure on the structure is greater than 1,000...
2003
Seismic Reflections from a Lau Basin Magma Chamber
Janet L. Morton, Norman H. Sleep
Circum Pacific Council Publications
.... Depth migration is highly dependent on the input velocity model. As noted earlier, the interval velocity estimate of 4.8 km/s may be slightly too...
1985
Submarine Current Measurements--Northwest Gulf of Mexico
George T. Moore
GCAGS Transactions
... is indicated by a dot plotted at the appropriate depth. Additional points may be plotted where the velocity and/or direction varied during the period...
1973
Stratification, Bed Forms, and Flow Phenomena (With an Example from the Rio Grande)
J. C. Harms, R. K. Fahnestock
Special Publications of SEPM
... of these stratification types are products of specific bed forms observed in this section of the river during the preceding irrigation season when discharge velocity depth...
1960
Dynamics of Stream Flow and Environmental Control
Krishna K. Misra
Tulsa Geological Society
... develops between the two adjacent layers in the direction of flow. In laminar, or viscous, flow the velocity is directly proportional to the water depth...
1972
First Results of Inaugural Deployments of the Australian National Ocean Bottom Seismograph Fleet
Alexey Goncharov, Ashby Cooper, Peter Chia, Michal Malinowski
Petroleum Exploration Society of Australia (PESA)
... and 1D velocity-depth models from the BART 2D line show significant lateral velocity variation, particularly in the deeper crust, and point...
2016
Combined Diving Wave Refraction Tomography and Reflection Tomography for PSDM Velocity Model Building (Bekapai Field, Indonesia)
Andi Kusuma, Florent Bertini, Jacques Bonnafe, Artem Sazykin, Swee Leng Ng
Indonesian Petroleum Association
.... The initial velocity field has been further updated with iterative Pre-Stack Depth Migration (PSDM) and reflection tomography with input data having...
2011
Investigation of Possible Shallow Gas Accumulations Associated with Pockmarks on the Otago Slope Southeast of New Zealand
Jasper Hoffmann, Andrew Gorman, Gareth Crutchley
Petroleum Exploration Society of Australia (PESA)
... data shows patches of reduced velocity increase with depth near bright spots. The increase of velocity with depth around the bright spots...
2018
Integrated seismic hazard analysis of southwest Penang Island through horizontal-to-vertical spectral ratio and probabilistic seismic hazard assessment
Siti Noor Shafiqah Badrolhisham, Abdul Halim Abdul Latiff
Geological Society of Malaysia (GSM)
... properties. Whereas shear-wave velocity in the uppermost 30 m layer that is based on the travel time from the surface to a depth of 30 m is known...
2021
Intra-Muda Shallow Gas in Cumi-Cumi PSC, Natuna Sea - a Driller's Nightmare Becomes a Geophysicist's Dream
Martin Bennett
Indonesian Petroleum Association
... compaction with depth of burial and indeed a clear trend of increase with depth is seen on the crossplot of Dix interval velocity against TWT to top...
2000
Upper Crustal Structure Derived from Seismic Refraction Experiments: Grand Banks of Eastern Canada
I. Reid, C.E. Keen
CSPG Bulletin
... displayed at a reduced velocity of 4.5 rather than 6 km/s. Static corrections have been applied to the travel times for variations in depth...
1988
Calculating Sandstone-Shale Ratios from Growth Normal Fault Dips on Seismic Profiles
R. E. Bischke , J. Suppe
GCAGS Transactions
.... The accuracy of the method depends on the accuracy of the velocity and depth determinations; however our results show that even routine interval velocities...
1990
Identification of Third (10(6) yr) and Fourth (10(5)/10(4) yr) Order Stratigraphic Cycles in the Louisiana Offshore
Allen Lowrie , Patricia J. Meeks , Karen Hoffman
GCAGS Transactions
... time. A velocity depth profile was not available to convert seismic time to depth. The thicknesses ranged from 0.08 to 0.53 seconds, with an overall...
1996
Sand Movement Along Equilibrium Beaches North of San Francisco
John A. Cherry
Journal of Sedimentary Research (SEPM)
... as Airy waves (Shepard, 1963). These surface waves set up an effective orbital velocity to a depth of L/2 where L is the wave length in deep water (water...
1966
P- and S-Wave Velocity Structures of the Sigsbee Abyssal Plain of the Gulf of Mexico from Ocean Bottom Seismometer Data
Sangmyung D. Kim, Seiichi Nagihara, Yosio Nakamura
GCAGS Transactions
...P- and S-Wave Velocity Structures of the Sigsbee Abyssal Plain of the Gulf of Mexico from Ocean Bottom Seismometer Data Sangmyung D. Kim, Seiichi...
2000
AAPG/Datapages Discovery Series No. 7, Multidimensional Basin Modeling, Chapter 6: Temperature and Maturity Effects of Magmatic Underplating in the Gjallar Ridge, Norwegian Sea
Fjeldskaar, W., H. Johansen, T. A. Dodd, and M. Thompson
AAPG Special Volumes
.... (1992a) have been able to construct a model of the magmatic features in the Vring Basin based on velocity-depth curves from seismic refraction...
2003
Morphology and Origin of Ripple-Drift Cross-Lamination, with Examples from the Pleistocene of Massachusetts
Alan V. Jopling, Roger G. Walker
Journal of Sedimentary Research (SEPM)
... that small changes in the hydrodynamic environment (that is, small changes in velocity, depth of flow, composition, and rate of sediment supply...
1968
Cosmic Impact in the Coastal Plain of Mississippi? The Kilmichael Structure
David T. King Jr., Lucille W. Petruny
GCAGS Transactions
... below sea level (S.L.) are indicated on right. These are computed using the formula: Vi or interval velocity at depth Z = Vo = kZ. Vo or initial...
2006
Monitoring Sea-floor Instability Caused by the Presence of Gas Hydrate Using Ocean Acoustical and Geophysical Techniques in the Northern Gulf of Mexico
Erika Geresi, Ross Chapman, Tom McGee, Bob Woolsey
AAPG Special Volumes
.... The compressional (P)-wave velocity is expected to increase with depth to the estimated base of the gas-hydrate stability zone (BGHS) (approximately...
2009
Inverse Grading and Hydraulic Equivalence in Grain-Flow Deposits
Asbury H. Sallenger, Jr.
Journal of Sedimentary Research (SEPM)
..., is grain density, D is grain diameter, du/dy is the rate of change of grain velocity with depth and is the angle of internal friction. Even though...
1979
Clast Orientation in Mount St. Helens Debris-Flow Deposits, North Fork Toutle River, Washington
Hugh H. Mills
Journal of Sedimentary Research (SEPM)
... fabrics in largescale debris flows for which the velocity and depth of flow are approximately known. The present study was a reconnaissance intended...
1984