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The AAPG/Datapages Combined Publications Database
Showing 43,240 Results. Searched 195,452 documents.
An Automated Grain-shape Classifier
William H. Glezen, John C. Ludwick
Journal of Sedimentary Research (SEPM)
... particle. It was found, however, that the average descent velocity over a substantial length of chute is a function of the mode of descent...
1963
Microseismic-Derived Ultimate Expected Fracture Half-Length in Unconventional Stimulated Reservoir Volume in a Multi-Fractured Horizontal 8 Well Full PadΒCanadian Horn River Basin Case Study
Claudio Virues, Jessica Budge, Eric Von Lunen
Unconventional Resources Technology Conference (URTEC)
... a maximum total fracture length of 1725m for the well. The first mode is attributed to a normal distribution generated by the Discrete Fracture Network...
2015
A Versatile Windows Based Multi-Electrode Acquisition System for DC Electrical Methods Surveys
Douglas D. Werkema, Jr., Estella Atekwana, William Sauck, Johnson Asumadui
Environmental Geosciences (DEG)
... for conventional array types, a vast improvement would be to program the system to gather three-dimensional apparent resistivity data. By positioning the field...
1998
Models for guiding and ranking well-to-well correlations of channel bodies in fluvial reservoirs
Luca Colombera, Nigel P. Mountney, Fabrizio Felletti, and William D. McCaffrey
AAPG Bulletin
... channel complex) by a well array with given spacing ; and (2) the proportion of channel complexes that are likely correlatable (or equivalently...
2014
The impact of estimated temporal and spatial variability of water layer velocity on the correction of OBS data
Peter Scholtz, Truong Nguyen, Arash Jafar Gandomi
International Meeting for Applied Geoscience and Energy (IMAGE)
... the velocity profile, π(π§ π) = ππ§ π2 + ππ§ π + π, with constrains for minimum and maximum velocities which stabilize the inversion for time...
2023
Seismic Frequency Bandwidth Constraints in Deepwater Locations
Andrew Long, Iain Buchan
Indonesian Petroleum Association
... is a compromise between the pursuit of maximum frequency bandwidth (shallower source and streamer depths) and useful/recoverable S/N ratios in the data...
2004
Slide Rule Seismic Computations
Robert H. Mansfield
Oklahoma City Geological Society
... use in migrating data, it is handy for reading approximate depths for given velocity functions, or it may be used in reverse to fit velocity functions...
1958
An Integrated View of Hydraulic Induced Fracture Geometry in Hydraulic Fracture Test Site 2
Gustavo A. Ugueto, Magdalena Wojtaszek, Paul T. Huckabee, Alexei A. Savitski, Artur Guzik, Ge Jin, J. Andres Chavarria, Kyle Haustveit
Unconventional Resources Technology Conference (URTEC)
... in single and multi-cluster stages. The maximum height of the fractures and vertical velocity of frac propagation can be determined when vertical fractures...
2021
Abstract: Seismic Array Response in the Presence of Intra-Array Variations in Element Weights, Elevations, and Positions; #90319 (2018)
Ryan Adhi Putra, Abdullatif Al-Shuhail
Search and Discovery.com
... of the wavelet response using element spacings ranging between 0 and 5 km and normalizing it by the maximum trace energy of the ideal array response...
2018
High-Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full-Waveform Inversion: an Offshore Australia Case Study
Bee Jik Lim, Denes Vigh, Stephen Alwon, Saeeda Hydal, Martin Bayly, Chris Manuel, Dimitri Chagalov, Gary Hampson, Dimitri Bevc
Indonesian Petroleum Association
... by FWI. The absence of early arrival information with the current cable length of 5.5 km limitation would be more pronounced in the slower velocity...
2014
Microseismic Case Study: A deeper look into the microseismic events. What events are really related to stimulated reservoir; #41446 (2014)
Michael Doerksen, Don Poruchny, Michael d'Entremont
Search and Discovery.com
.... In addition to the MS data it was decided to acquire a VSP survey to refine the velocity model, tie an existing 3D reflection seismic survey...
2014
Application of the surface azimuthal electrical resistivity survey method to determine patterns of regional joint orientation in glacial tills
Douglas Carlson
Environmental Geosciences (DEG)
... array rotated about a fixed center point at selected degree intervals that yields an apparent resistivity ellipse. From this ellipse, joint set...
2010
Characterization of Heterogeneity in Unsaturated Sandstone Using Borehole Logs and Cross-Borehole Tomography
Andrew Binley, Giorgio Cassiani, Peter Winship
Special Publications of SEPM
... at the site. Given this objective, we show how the spatial variability of hydrological properties deduced from geophysical data can be quantitatively...
2004
Use of the azimuthal resistivity technique for determination of regional azimuth of transmissivity
Douglas Carlson
Environmental Geosciences (DEG)
... soundings included the maximum A spacing possible given the size of an open field available. This commonly included measurement of apparent...
2010
Vibroseis and Dynamite Comparison as Seismic Energy Source in North Sumatra
M. E. Gregg, B. E. Mackenzie, A. Patria
Indonesian Petroleum Association
... attenuated by a receiver array of moderate length. Analysis revealed that the amplitude of weak signal arrivals was down more than 60 dB from...
1991
Abstract: Simplified Processing of Converted Wave Data; #90224 (2015)
John C. Bancroft and Thais Guirigay
Search and Discovery.com
... using a single velocity Vc. From this data, a maximum range of 100 m was chosen for an initial velocity analysis. A comparison of the P-S data...
2015
Limitations of Reflection Seismograph
L. E. Nugent, Jr.
AAPG Bulletin
..., L the length of the column, V1 the velocity of the formation, and VD the velocity of detonation]. The position of the charge must also be known...
1953
Sedimentologic and Physical Oceanographic Evidence of a Shelf Edge Counter Current Off Guinea Bissau, Guinea and Sierra Leone
David W. McGrail
Journal of Sedimentary Research (SEPM)
... nondimensionalizing equation (1). This is accomplished by representing the length, time and relative velocity characteristic of a particular motion by L, -1 and U...
1977
Abstract: Q-estimation from Uncorrelated Vibroseis VSP Model Data; #90172 (2014)
Arnim B. Haase
Search and Discovery.com
... and 456 m (the red and the green curves in Figure 7), however, the effect of stratigraphy on velocity dispersion is apparent. Considering that the upper...
2014
Correction of invasion effects on well logs in Camisea gas reservoirs, Peru, with the construction of static and dynamic multilayer petrophysical models
Ankur Gandhi, Carlos Torres-Verdin, Ben Voss, Federico Seminario Gros, Johnny Gabulle
AAPG Bulletin
... (overlapping) of apparent resistivity logs across low-permeability formations, possibly because of large radial length of invasion (in this case, the stacking...
2013
Star: Shallow Time Anomaly Replacement
Michael O. Marcoux, Lee Lu
Southeast Asia Petroleum Exploration Society (SEAPEX)
...Star: Shallow Time Anomaly Replacement Michael O. Marcoux, Lee Lu 1982 37 44 The presence of spatially varying low velocity thin layers in the near...
1982
Abstract: TTI Anisotropic Depth Migration: Which Tilt Estimate Should We Use?; #90211 (2015)
Francois Audebert and Volker Dirks
Search and Discovery.com
...-way traveltime along the normal ray, the apparent slowness (traveltime gradient) at the emergence point, and the apparent NMO velocity, Vnmo (related...
2015
The Valhalla Doe Creek βIβ Pool: Use of Cased-hole Logging Techniques for Resolution of Thin-bed Effects in Cretaceous Sandstones
John R. Hogg
CSPG Special Publications
... tools is apparent. The Array-Sonic log shows much more detail in the reservoir zone and can clearly define tight streaks from the surrounding porous...
1995
Oscillatory Ripple Marks and the Evaluation of Ancient Wave Conditions and Environments
Paul D. Komar
Journal of Sedimentary Research (SEPM)
... are respectively the wave height and length, and h is the water depth. The maximum horizontal velocity associated with this to-and-fro motion...
1974
Applications of Shallow High-Resolution Seismic Reflection to Environmental Problems
Richard D. Miller, William E. Doll, Carlene Merey, William E. Black
Environmental Geosciences (DEG)
... than suggested by Fresnel zone theory. Uncompensated near-surface velocity variations could result in inaccurate seismic interpretations. Shallow seismic...
1994