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The AAPG/Datapages Combined Publications Database

Showing 3,675 Results. Searched 201,044 documents.

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The Use of LANDSAT-1 Imagery in Mapping Lineaments in Pennsylvania

W. S. Kowalik, D. P. Gold

Utah Geological Association

... than 30 km, lie within several degrees of the sun azimuth or scan line orientation. The illumination bias suggested elsewhere by Wise (1968), Isachsen...

1974

Geostatistics and its Application for the Evaluation of Tin Deposits

L. Sandjivy

Geological Society of Malaysia (GSM)

... ~ variable 2h ~ cross variogram Bias can be seen by comparing actual recovered grades with estimated ones over a long period. Without consideration...

1982

Semblance Technology and DHI Analyses, Kupe, New Zealand

Mark L. Sloan, Angus Ruddock

Petroleum Exploration Society of Australia (PESA)

... as computed from all eight adjacent traces to e nsure no bias and, as a first pass, computationa l choi ce was set as the average attribute value, again...

1997

A Useful Volumeter: NOTES

N. C. Janke

Journal of Sedimentary Research (SEPM)

... a nominal diameter of 0.12 cm. An overestimate bias was found to be caused by increases of temperature due to the operator's body heat; thus it is best...

1972

A One-Man Profiling Method for Beach Studies

W. J. Stephen

Journal of Sedimentary Research (SEPM)

... station which remains after operator bias has been minimized, shows that the mean of the clinometer-derived values are in fairly close agreement...

1977

Optimal Configuration and Information Content of Sets of Frequency Distributions: REPLY

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

Journal of Sedimentary Research (SEPM)

... by families of distributions are compared, the samples should be configured using a standard method not affected by bias. Bias, by definition, forces...

1985

Stratigraphic Velocity Interpretation: National Petroleum Reserve--Alaska: Chapter 12

E. W. Peikert

AAPG Special Volumes

... velocities for the same interval. Although somewhat on the high side in this area, positive velocity differences or bias in the estimation of well...

1985

Exploration benchmarking to establish the potential of two hydrocarbon plays in the Pelotas and Punta del Este Basins, offshore Uruguay

David A. Pollitt and Shaoqing Sun

AAPG Bulletin

...). Consequently, there is little formalization and consistency of application, and this can result in both bias and an absence of analytical...

2023

Abstracts: The Reflectivity Response of Multiple Fractures and its Implications for Azimuthal AVO Inversion; #90173 (2015)

Olivia Collet, Benjamin Roure, Jon Downton

Search and Discovery.com

... slowly drift towards an overestimation. However, even for δdip =15°, the bias introduced is still reasonable considering the size of the solution space...

2015

Characterizing (Oil Sands) Ore Body with Process Performance Indicators using Pattern Recognition, #40699 (2011)

Yang Wang, Dean Wallace, Leonard Slipp

Search and Discovery.com

... a pre-defined model; 4. No bias is assumed before the data analysis phase, making this approach good at detecting unexpected associations; 5...

2011

Using Seismic Facies to Constrain Electrofacies Distribution as an Approach to Reduce Spatial Uncertainties and Improve Reservoir Volume Estimation, #40768 (2011)

Bruno de Ribet, Pedro Goncalves, Luis H. Zapparolli, Cesar A. Ushirobira,

Search and Discovery.com

.... This sparse type of recovered information frequently introduces a strong bias in subsequent estimative of facies proportions within the geological grid...

2011

Unconventional Thinking, #110217 (2015).

Bill Haskett

Search and Discovery.com

... Superimposed on Pittsburgh Human Bias: Before the Decision is Made… • Perceived threat of Pain is stronger for failed action than it is for failed inaction...

2015

Application of the Global Positioning System to PNG Petroleum Exploration

N. C. Talbot, G. J. Carman

Papua New Guinea (PNG) Petroleum Convention Proceedings

... usual therefore to talk of observed receiver — satellite distances as pseudo­ ranges. To resolve the unknown receiver clock bias (T), a m inim um...

1990

Auto-Control Model Building Using Machine Learning Regression for Extreme Response Prediction

Darrell Leong, Anand Bahuguni

Australian Petroleum Production & Exploration Association (APPEA) Journal

... points. Managing variance bias However, Low (2016) cautions against formulating a common control and weight by using all available data. First, gi...

2020

A Case for Microseismic Surface Arrays in Texas?

Hallie Meighan, Robert A. Hull, Earl Roberts

Unconventional Resources Technology Conference (URTEC)

... in a horizontal well in the same zone as the stimulation, Pioneer has recognized that minor noise interference (and bias in data) from pumping...

2015

Empirical and Semi-analytical Workflow to Determine Optimal Spacing in Unconventional Reservoirs

C. Coley, M.D. Rincones, K. Wiggs, W. Prabowo

Unconventional Resources Technology Conference (URTEC)

... technique for conventional reservoirs and finally the third method uses unbiased machine learning forecasting at a basin level to eliminate human bias when...

2023

Assessing the Impact of Oriented Perforating Strategies and Frac Plug Performance in DJ Basin Wells Using High-Resolution Acoustic Imaging

Matt Paradeis, Tamara Maxwell, Trent Pehlke, Lydia Richley, Greer Simpson

Unconventional Resources Technology Conference (URTEC)

... the stimulations performance and result in a heel-side bias if the desired perf friction is not achieved (Cramer et al. 2019). In this case...

2024

Do Terrestrial Vertebrate Fossil Assemblages Show Consistent Taphonomic Patterns?

Jason Richard Moore

PALAIOS

... that the influence of taphonomic bias be accounted for, particularly analyses focusing on paleocommunity ecology. The final composition of a fossil...

2012

Averaging Predictions of Rate-Time Models Using Bayesian Leave-Future-Out Cross-Validation and the Bayesian Bootstrap in Probabilistic Unconventional Production Forecasting

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh

Unconventional Resources Technology Conference (URTEC)

... with a better bias-variance tradeoff (model selection induced bias). The goal of this work is to combine different models’ predictions to avoid...

2021

Modeling Dense-Arrays of Hydraulic Fracture Clusters: Fracture Complexity, Net Pressure and Model Calibration

Varahanaresh Sesetty, Ahmad Ghassemi

Unconventional Resources Technology Conference (URTEC)

...), however, the heel-side fracture in Stage-2 shows more length and height growth. Some heel bias can be observed based on the aperture distribution...

2019

Quantifying Fracture Intensity: An Example from the Piceance Basin

Leonel Gomez, Julia F. W. Gale, S. E. Laubach, S. Cumella

Rocky Mountain Association of Geologists

... trend in a log-log graph. Truncation bias at the small-scale end of the plot is produced by limits in either imaging or recognizing and recording...

2003

Advanced Tracer Interpretation at Utah FORGE Provides New Insights on Completion and Stimulation Challenges for Enhanced Geothermal Systems and Tight Formations

Christopher N. Fredd, Christopher de Cerf, Partho Giri, Sven Hartvig, Olaf Huseby, John McLennan, Kevin England

Unconventional Resources Technology Conference (URTEC)

... is consistent with the relatively balanced connectivity bias discussed in Figure 18. Characterization of Fracture Connections: The fracture...

2025

If It Is So Easy, Why Dont You Come Do It Yourself? A Response to What I Wish My Geologist Knew About Drilling: A Drilling Engineers View of GeosteeringŽ

Raymond L. Woodward, Samuel F. Noynaert

Unconventional Resources Technology Conference (URTEC)

... actual cumulative dip of 91.20 for 40’ thick target zone. Interpretive Bias It is very well documented that pre-conceptions can - in fact usually do...

2017

FacimageTM Modeling as a Substitute for Gas Content from Core Desorption and for Real Time Facies Analysis

Philippe Rabiller, Peter Boles, Howard Dewhirst

Unconventional Resources Technology Conference (URTEC)

.... The processes used are designed to be devoid of operator bias and can be run as soon as logs are run to allow on-site decisions about testing, suspension...

2013

Intelligent Monitoring of Fugitive Emissions - Comparison of Continuous Monitoring with Intelligent Analytics to other Emissions Monitoring Technologies

Michelle J. Liu, Karren N. Izquierdo, Dennis S. Prince

Australian Petroleum Production & Exploration Association (APPEA) Journal

... factor known as confirmation bias, a situation that is illustrated in Fig. 1. In an emissions monitoring setting, confirmation bias occurs when...

2022

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