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The AAPG/Datapages Combined Publications Database

Showing 16,516 Results. Searched 190,739 documents.

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Seismic Data Acquisition and Processing in the Midway-Sunset Oil Field

C. R. Willingham, A. S. Wylie Jr., D. J. Underwood

Pacific Section of AAPG

... of the spacing between the groups. To retain the effectiveness and prevent aliasing of returns from dipping structure, the arrays, in these areas, were...


A Comparative Study of 3-D Noise Attenuation Techniques

Daniel Wheaton, Yendri, Kusnarya

Indonesian Petroleum Association

... and coherent noise are studied. Predictive filtering in the f-x (frequency - space) domain for random noise suppression may be applied post stack as either...


Section Five: Use of Gravity Methods on Diapiric Structures

New Orleans Geological Society

... aliasing (distortion due to sampling frequency) of the data. Once station spacing has been determined, the entire survey should be metered on a square...


Post Migration Processing of Seismic Data

Dashuki Mohd.

Geological Society of Malaysia (GSM)

.... As seismic energy propagates through the earth, it experienc~s ~arious changes in frequency and phase characterIstIcs due to variations in the subsurface...


Gravity's Role in a Modern Exploration Program

Gene Greene

Houston Geological Society Bulletin

... of the entire survey. At least two samples per wavelength are needed to prevent aliasing and adequately define an anomaly. Once the station spacing has...


Interpretation of Airborne Magnetic Data of Upper Benue Trough, Northeastern Nigeria, #10888 (2016).

Omeje Maxwell, E.S Joel, lusegun Adewoyin, O. Meludu, O. Meludu

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... are much wider than 2 km and therefore lie in a frequency range from aliasing which do not occur with a 1 km digitizing grid. Having digitized each...


Long Climatic Time Series from Sediment Physical Property Measurements

Timothy D. Herbert, Larry A. Mayer

Journal of Sedimentary Research (SEPM)

... term evolution of climate in the Milankovitch frequency band, as well as to reconstruct patterns of carbonate sedimentation over time. Sedimentation...


Unconventional Processing for 3D Data: A 1993 Case History

Claude Eizlini, Jacques Bonnafe, Bugi Kamil, Gilles Bitoun

Indonesian Petroleum Association

... a quick glance at typical data without statics will show some acceptably fair reflections albeit with a very narrow frequency band. The experience...


Three Dimensional Exploration in California — A Case History

E. T. Selby

Indonesian Petroleum Association

... is that, to prevent aliasing, there must be at least two samples within the period of the highest frequency to be defined. The requirements for non-aliased space...


Land 3D Acquisition Techniques Related to S.E. Asian Situation

Walter Ritchie

Indonesian Petroleum Association

... Acquisition Project Design Simple geometric relationships and sampling theory establish subsurface (and surface) spacing based on known dip, frequency...


Geostatistical Integration of Crosswell Data for Carbonate Reservoir Modeling, Mcelroy Field, Texas

William M. Bashore, Robert T. Langan, Karla E. Tucker, Paul J. Griffith

Special Publications of SEPM

... the Grayburg Formation. CROSSWELL DATA ACQUISITION The data were collected using a swept-frequency , piezoelectric source and a seven-level hydrophone...


Chapter One: Introduction to AAPG Memoir 42/SEG Investigations in Geophysics, No. 9, 7th Ed.

Alistair R. Brown

AAPG Special Volumes

.... The interpreter must consider data quality, frequency content, resolution, data phase, and data polarity, and must learn as much as possible about the data...


The Wave Equation Applied to Migration

D. Loewenthal, L. Lu, R. Roberson, J. Sherwood

Southeast Asia Petroleum Exploration Society (SEAPEX)

... low cut, 30 Hz high cut) in order to avoid any drastic aliasing problems during the migration procedure. The model parameters were a constant...


Recent Advances in Borehole Seismic

W. L. Nutt

Indonesian Petroleum Association

... seismic frequency bandwidth. The calibrated sonic log so obtained can be used in conjunction with the density log to produce a synthetic seismogram. Careful...


Squeezing Every Last Drop Out of a Coarse 3D Oil Sands Dataset for Refining 3D Survey Design … A Case History; #41500 (2014)

Sylvestre Charles, Jim Hostetler, Jiwu Lin, Xiaoming Luo

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... at the Devonian unconformity it is about 23 traces per bin. Assuming an average velocity of 2200m/s, for this bin size the maximum un-aliased frequency...


Structural Analysis Using Spatial Filtering in Interior Plains of South-Central Alberta

J. E. Robinson , H. A. K. Charlesworth , M. J. Ellis

AAPG Bulletin

... (Fig. 14). In this way, any error caused by aliasing (folding of the true amplitude spectrum about a frequency with a wavelength of twice the digital...


Full-Resolution 3D Radar Stratigraphy of Complex Oolitic Sedimentary Architecture: Miami Limestone, Florida, U.S.A.

Adrian Neal, Mark Grasmueck, Donald F. McNeill, David A. Viggiano, Gregor P. Eberli

Journal of Sedimentary Research (SEPM)

... and outcrops is problematic due to spatial aliasing. A 250 MHz full-resolution 3D GPR data set was collected over an area of 45 m × 24 m that encompassed...


2012 Update of Southern Mid-Continent Theses and Dissertations

Neil H. Suneson

Oklahoma City Geological Society

...-Vargas, Alejandro, 2011, Suppression of aliasing artifacts on 3D land data via constrained least-squares migration. MS. Cataldo, Ernesto D., 2011...


Abstract: A Faster, More Accurate Gaussian Simulation; #90172 (2014)

Colin Daly, Sandra Quental, Darcy Novak

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... to aliasing. This can be improved by simulating on a larger volume by padding the data, then ‘cutting out’ the region of interest. The factor of simulation...


Volumetric Curvature Attributes for Mapping Faults, Fractures, Depositional and Diagenetic Features

Satinder Chopra and Kurt J. Marfurt

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... and tides Problems due to processing • Incorrect velocities • Migration operator aliasing Footprint removal (a) (b) Low (c) High (d) Time slices...


Re-Evaluation of Hydrocarbon Potentials of Eastern Part of the Chad Basin, Nigeria: An Aeromagnetic Approach, #10405 (2012)

Emmanuel Anakwuba, Augustine Chinwuko

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... in minimizing aliasing effects in sampled data (Bath, 1974). A grid interval of 1 km was used to obtain a 165 x 165 data-point grid. The gridded data...


4D Acquisition Strategies For Australian Reservoir Monitoring Projects

Andrew Long

Petroleum Exploration Society of Australia (PESA)

.... The frequency of monitor surveys depends on the rate of change in reservoir state as production progresses and the cost-benefit model fo r 4D seism ic...


Seismic expressions of a Miocene prograding carbonate margin, Mut Basin, Turkey

Xavier Janson, Gregor P. Eberli, Florence Bonnaffe, Fabrice Gaumet, Vincent De Casanove

AAPG Bulletin

..., even at 40-Hz frequency; however, most of the complex stratigraphic architecture is below standard seismic resolution. Sigmoidal outcrop geometries...


Parsimonious Deconvolution

Jon F. Claerbout

Southeast Asia Petroleum Exploration Society (SEAPEX)

... high frequency noise. Varimax deconvolution decreases the noise. More realistic estimated filters bτ and further noise reduction can be achieved...


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