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...

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...

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...

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...

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...

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...

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...

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...

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...

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

T. E. W. NIND

Williston Basin Symposium

...: Typical harmonic decline curve...

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...

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...

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...

Abstract: Structural Style and Timing in the Narraway Area, Foothills Belt, Alberta: Implications for Fracture Distribution and Hydrocarbon Exploration; #90063 (2007)

Search and Discovery.com

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...

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...

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...

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...

Reability of Kaji Field Oil Production: Modification of 2MVA Power Transformer

Ivan Candra Yudha, Ferry Hendrawan

Indonesian Petroleum Association

... to the degradation of insulating oil quality, winding core insulation and harmonic effects. An overall investigation and inspection of the physical...

Estimating Residual Fracture Pore Volume by Analyzing Post-Flowback Water Production: An Eagle Ford Black-Oil Case

Sabbir Hossain, Obinna Ezulike, Hassan Dehghanpour

Unconventional Resources Technology Conference (URTEC)

... these observations and to estimate the average fracture pore volume (Vf) during the post-flowback process. This model assumes no water influx from matrix...

Reserves Estimation: Part 10. Reservoir Engineering Methods

Rick J. Sustakoski, Diana Morton-Thompson

AAPG Special Volumes

... to describe decline curve (usually rate versus time) behavior. They are -- Exponential decline -- Hyperbolic decline -- Harmonic decline Exponential...

Rescaled Decline Curves: A Solution for Shale Gas Assessment, #40748 (2011)

Jean-Yves Chatellier, Bob Menard, Sylvestre Charles,

Search and Discovery.com

... (harmonic behavior) that is a simple and very reliable mathematical equation; the result of which can be easily plotted and efficiently compared. Comparison...

An Approach in Caving Recognition by An Integrated Model of Computer Vision and Machine Learning for Any Drilling Environment, #42374 (2019).

Carlos A. Izurieta, Luis A. Rocha, Dan Sui,

Search and Discovery.com

.... Another method of improvement is by using more pixels but with higher computational cost or by using Harmonic Neural Networks instead of Convoluted...

Analysis of Modern Equatorial Tidal Periodicities as a Test of Information Encoded in Ancient Tidal Rhythmites

Allen W. Archer, Erik P. Kvale, Hollis R. Johnson

CSPG Special Publications

... in modern tides. Harmonic analyses of modern data indicate that neap-spring cycles can be related not only to the synodic month (related to lunar phase...

Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5

John H. Doveton

AAPG Special Volumes

... (arbitrary) interval, it is often more convenient to consider the distance between successive events. Then the average distance, h, is given...