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The AAPG/Datapages Combined Publications Database

Showing 718 Results. Searched 200,693 documents.

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Patterns of Quartz Sand Shape Variation, Long Island Littoral and Shelf

Debra D. Riester , R. Craig Shipp , Robert Ehrlich

Journal of Sedimentary Research (SEPM)

... at the bight apex. The average shelf gradient is 0.87 m/km (Freeland and Swift, 1978). It is a dominantly wave-controlled energy regime (microtidal...

1982

Optimal Configuration and Information Content of Sets of Frequency Distributions

William E. Full , Robert Ehrlich, Stephen K. Kennedy

Journal of Sedimentary Research (SEPM)

... microprocessor system (ARTHUR II) described elsewhere (Fico 1980). The average diameter was calculated based on the maximum projection of each particle...

1984

Abstract: Reservoir Quality Function RQFŽ for SAGD Geo-model Ranking and Well Pair Elevation Optimization; #90172 (2014)

Khaled Benzaoui

Search and Discovery.com

... controlled by the vertical permeability. The vertical flow is parallel to Kv. Each cell will be assigned an effective permeability which is the harmonic...

2014

Abstracts: Noise Examples from Two Microseismic Datasets; #90173 (2015)

Andy St-Onge and David Eaton

Search and Discovery.com

...). However, trace 9 has recorded no data except for a doublet peak at about 0.7 seconds. HIGH FREQUENCY HARMONIC NOISE figure 3 is a 0.2 sec. Window from...

2015

-- no title --

user1

Search and Discovery.com

... and dispersion (R2) to calculate the average values for the different folds of each permutation. To compare the different options using only one...

Unknown

Grain-Shape Variation in the St. Peter Sandstone: A Record of Eolian and Fluvial Sedimentation of an Early Paleozoic Cratonic Sheet Sand

James M. Mazzullo, Robert Ehrlich

Journal of Sedimentary Research (SEPM)

... at an average spacing o 8 inches. This core, which includes two-thirds of the total thickness of the formation in the Twin Cities area, starts from...

1983

Diagnostic Applications of Borehole Hydraulic Signal Processing

Connor J. Clark, Jennifer L. Miskimins, Dana L. Gallegos

Unconventional Resources Technology Conference (URTEC)

...-Julesburg basin, Colorado. The calculated depth of the shallowest treated perforation was identified with an average error of 30’ off of the recorded...

2018

The Effects of Wind Transport on the Shapes of Quartz Silt Grains

Jim Mazzullo, Andrew Alexander , Thomas Tieh , Ding Menglin

Journal of Sedimentary Research (SEPM)

... harmonic of the series represents a standard circular form with n evenly-spaced nodes (where n is the harmonic number). The lower h rmonics are closed...

1992

Spectral Analysis of the Middle Triassic Latemar Limestone

Linda A. Hinnov, Robert K. Goldhammer

Journal of Sedimentary Research (SEPM)

.... FISHER, R.A., 1929, Tests of significance in harmonic analysis: Proceedings of the Royal Society of London, Series A, v. 125, p. 54-59. GAETANI, M...

1991

Shape difference of mud clasts depending on depositional facies: application of newly modified elliptic Fourier analysis to hybrid event beds

Sojiro Fukuda, Hajime Naruse

Journal of Sedimentary Research (SEPM)

... Fourier descriptors (EFDs) as bellow: where Hn is nth harmonic ellipse (Fig. 1C) and takes following form: where is the maximum number of harmonic...

2020

The Original Shapes of Quartz Sand Grains

Jim Mazzullo, Stewart Magenheimer

Journal of Sedimentary Research (SEPM)

... is partitioned into a series of standard shape components (harmonics), and the relative contributions (amplitudes) of each harmonic to the shape of the grain...

1987

Spectral Induced Polarization: A New Way for Hydrocarbon Prospect Prediction

Feisal Dirgantara

Indonesian Petroleum Association

...-electrode dipole for data reception. High-frequency harmonic analysis can be improved by dedicating one measurement channel to monitor the transmitted...

2008

The Concept of Stationarity and Support in Permeability Assessment for Upscaling using the Probe Permeameter

Septi Anggraeni

Indonesian Petroleum Association

... is strongly controlled by matrix permeability (approximated by the weighted harmonic average of the matrix and vug permeability). Where the vug's length...

2000

The new method of sandbody connectivity characterization for fluvial reservoir and its application in Bohai oilfield

Xuetong Liu, Hebing Tang, Xuefeng Zhou, Zhenglong Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... at the signal with white noise, the IMFs and the remainder are obtained by EMD; (3)The average of IMF components from multiples EMD decomposition is the result...

2024

Scalable, efficient, and adaptive simulation of frequency-domain wave propagation

Jacob Badger, Andrey Bakulin, Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

... Association of Petroleum Geologists Scalable Frequency-Domain Simulation Figure 2: Visco-acoustic simulation of a 15 Hz time-harmonic shot...

2024

Magneto-Telluric Method Applied to Geothermal Prospecting*

Gerard Cormy

Southeast Asia Petroleum Exploration Society (SEAPEX)

... prospecting in: Italy, east of the Larderello field, where stations were laid out at an average spacing of 800 meters over an area of about 30 sq. kms...

1975

TWO OPTIMIZATION PROBLEMS IN OIL POOL EXPLOITATION: Well Spacing Flare Gas Collection Systems

T. E. W. NIND

Williston Basin Symposium

...: Typical harmonic decline curve...

1964

Paleoecological Reconstruction of Depositional Environments—Some Techniques of Possible Exploration Interest: Abstract

Francis G. Stehli

Tulsa Geological Society

... and of the rotational poles. Smoothing of global diversity data by application of a best-fitting, second-order, spherical harmonic surface allows precise location...

1968

A 10 kN portable electromagnetic vibrator for near-surface studies

Tim Dean, Hoang Nguyen

Petroleum Exploration Society of Australia (PESA)

... level is at least 50 dB down with no evidence of harmonic contamination. Figure 4. Photographs showing a vehicle providing the hold-down...

2019

Factors Influencing Productivity: Chapter 4

Sada D. Joshi

AAPG Special Volumes

... 81------------------------- Figure Figure Measurement of Vertical Permeability 1) Core data; arithmetic, harmonic average, etc. 2) Breakthrough...

1991

Abstracts: A Spring in the Dinosaur's Step: Musculoskeletal Modelling Dinosaur Locomotion; #90210 (2015)

Phillip Manning

Search and Discovery.com

... period of an oscillating trunk was actually a harmonic of the gait cycle frequency, which could also be seen in the animation outputs from Gaitsym...

2015

Tectono-Stratigraphic Habitat and Estimated Volume of Undiscovered Petroleum Resources North of the Arctic Circle; #10233 (2010)

Arthur Grantz, Donald L. Gautier, Robert A. Scott, Sergey S. Drachev, Thomas E. Moore

Search and Discovery.com

..., G. V., 1985, Magsat vertical field anomalies above 40 degrees N from spherical cap harmonic analysis: Journal of Geophysical Research, v. 90/B3, p...

2010

Sources, Distribution, and Mixing of Late Pleistocene and Holocene Sands on the South Texas Continental Shelf

Jim Mazzullo, K. D. Withers

Journal of Sedimentary Research (SEPM)

... values (average value: .068) at the third harmonic, while that of end member 2 is dominated by grains with relatively high amplitude values (average...

1984

Making Waves: Seismic Data Collection Using Vibroseis Technology

C. Jason Criss

GEO ExPro Magazine

... to include features such as harmonic distortion reduction. Harmonic distortion is the noise that is always present when sweeping with a vibroseis...

2019

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