Midland Basin: Integrated Diagnostic Insights on Plug Isolation and Selection

Trent Wien, Matt Jones, Yu Zhao, Kyle Smith, Chuck Nwabuoku, Camilo Ortega

Unconventional Resources Technology Conference (URTEC)

... misplacement and severe heel bias. Moreover, about 65% of proppant pumped in Stage 15 went into the heel clusters, already heavily treated in Stage...

Particle-Type Well Logging

J. E. Banks

AAPG Bulletin

... usually be recorded without bias on a percentage log. By comparison with other sample logs or with an electric or radioactivity log of the same hole...

Impacts of Groundwater Withdrawal Regulation on Subsidence in Harris and Galveston Counties, Texas, 1978-2020

A. Greuter, M. J. Turco, C. M. Petersen, G. Wang

GCAGS Transactions

... surrounded by GPS stations whose period of record included the entire time period between 2000 and 2020 were excluded due to a bias observed in the modeling...

Augmented Intelligence for Geoscience Data in Mature Basins

Jess B. Kozman and Lorena Pelgrin

GCAGS Transactions

... introduce bias that lowers the value of existing data and impacts the effectiveness of decision making under uncertainty (Wilson et al., 2019). Figure 1 We...

Further Comparisons of Grain Size Distributions Determined by Electronic Particle Counting and Pipette Techniques

E. William Behrens

Journal of Sedimentary Research (SEPM)

... representing only real and transformed pipette data. Thus it could be possible that an operator bias rather than real measurement differences accounts...

3 Terrestrial Heat Flow

P. E. Gretener

AAPG Special Volumes

... such laboratory measurements sample bias may also falsify the results. E.g. in a sand-shale sequence the easily handled sands will be given preferential...

Mudrock Fabrics and their Significance: REPLY

Robert M. Cluff

Journal of Sedimentary Research (SEPM)

.... Because of the long standing bias of many geologists towards outcrop studies as opposed to subsurface work, most of the published literature...

Multivariate Data Analysis: Part 6. Geological Methods

K. H. Esbensen, A. G. Journel

AAPG Special Volumes

... and core plugs), a prevalent problem in exploration and development. Such preferential selection of data points can severely bias one's image...

Settling Velocities of Quartz and Tourmaline in Eolian Sandstone Strata

James R. Steidtmann, Harry C. Haywood

Journal of Sedimentary Research (SEPM)

... size changes may be an artifact of some unknown sampling bias. None of these possible explanations have been tested, and they merit further work...

The Effect of Grain Size on Detrital Modes: A Test of the Gazzi-Dickinson Point-Counting Method: DISCUSSION

John Decker, Kenneth P. Helmold

Journal of Sedimentary Research (SEPM)

...-Dickinson method does not effectively reduce the grain size bias of all provenance-diagnostic detrital constituents, (2) counting genetically important rock...

Evaluation of a Laser-Diffraction-Size Analyzer for Use with Natural Sediments: RESEARCH METHOD PAPER

I. N. McCave, R. J. Bryant, H. F. Cook, C. A. Coughanowr

Journal of Sedimentary Research (SEPM)

... with a smooth curve sketched through the points. However, the curve fitting by spline is free of bias and is preferred. The polymodal structure...

Dolomitization: A Critical View of Some Current Views: DISCUSSION

Donald H. Zenger

Journal of Sedimentary Research (SEPM)

... as at least ome gain in momentum for the model over the past few years. In referring to what he sees as a bias of modern dolomite to form in association...

Braided Fluvial to Marine Transition: The Basal Lower Cambrian Wood Canyon Formation, Southern Marble Mountains, Mojave Desert, California: REPLY

Christopher M. Fedo, John D. Cooper

Journal of Sedimentary Research (SEPM)

... this bias constrains the dispersion, it does so within a unimodal trend. Interestingly, Lobo and Osborne (1976) reported a paleocurrent rosette rom...

Alternatives to Eustasy in Sequence Control: Chapter 6

Wolfgang Schlager

AAPG Special Volumes

...; drowning shows no bias towards fast-growing platforms, indicating that the rate of long-term subsidence had little influence on Cretaceous drownings...

Effect of Mica on Particle-Size Analyses Using the Laser Diffraction Technique: RESEARCH METHODS PAPERS

Shaun Hayton , Campbell S. Nelson , Brian D. Ricketts , Steve Cooke , Maurice W. Wedd

Journal of Sedimentary Research (SEPM)

... mica-based grain-size distribution rather than a total sediment distribution. DISCUSSION AND CONCLUSIONS What causes the presence of mica to bias...

Economic Aspects of Exploration and Development of Mineral Resources--Viewpoint of the Educator

John J. Schanz, Jr.

AAPG Bulletin

... with a strong bias toward economic concepts that relate to nonrenewable resources, would provide a broadening influence and would open the door...

Interrelations of Population Growth, Energy Supply, and Environment: REPLY

William Naunton Barbat

AAPG Bulletin

... introduces unexplained bias. 3. The relation between birthrates and per capita electric energy consumption is changing with time. Mari's observation...

High-Resolution Dating of Cenozoic Sediments from Northern North Sea Using {87}Sr/{86}Sr Stratigraphy: Reply (1)

P. C. SMALLEY and Y. RUNDBERG

AAPG Bulletin

... of this reported uncertainty relates to interlaboratory bias and sample alteration/contamination in the analyses making up the seawater curve. We took pains...

An efficient, consistent, and trackable method to quantify organic matter–hosted porosity from ion-milled scanning electron microscope images of mudrock gas reservoirs

Liaosha Song, Travis Warner, and Timothy Carr

AAPG Bulletin

... not only because it saves time, but it also helps eliminate human bias or subjectivity by increasing consistency (Wildenschild and Sheppard, 2013). Hemes...

Abstract/Excerpts: Automatic Calibration of Stratigraphic Forward Models for Reservoir Presence De-Risking, by Oriol Falivene, Jim Pickens, Alessandro Frascati, Stephane Gesbert, Tobias Garwood,Yu-Lan Hsu, Mantez Mc Donald, Gary Steffens, Alban Rovira, and Brad Prather; #120098 (2013)

Search and Discovery.com

Abstract: Oil Fingerprinting for Production Allocation: Exploiting the Natural Variations in Fluid Properties Encountered in Heavy Oil and Oil Sand Reservoirs; #90171 (2013)

Barry Bennett, Jennifer J. Adams, Stephen R. Larter

Search and Discovery.com

... that respond to degradation in this case history includes alkyltoluenes (concentration data and molecular fingerprints) which also show a bias towards...

Abstract: Fracture Envintories and Transfer of Strain into the Eastern Colorado Plateau as Evaluated by Field, Lidar, and Remote Sensing Techniques, by Tim F. Wawrzyniec; #120140 (2014)

Search and Discovery.com

Abstract: Oil Fingerprinting for Production Allocation: Exploiting the Natural Variations in Fluid Properties Encountered in Heavy Oil and Oil Sand Reservoirs; #90171 (2013)

Barry Bennett, Jennifer J. Adams, Stephen R. Larter

Search and Discovery.com

... that respond to degradation in this case history includes alkyltoluenes (concentration data and molecular fingerprints) which also show a bias towards...

Abstract: Use of Seismic and EM Data for Exploration, Appraisal and Reservoir Characterization; #90171 (2013)

Anton Ziolkowski and Folke Engelmark

Search and Discovery.com

..., joint inversion must rely on correlations between physical parameters that may bias the answer. Different data types should be processed and, where...

Abstract: Resolution and Location Uncertainties in Surface Microseismic Monitoring; #90174 (2014)

Michael Thornton

Search and Discovery.com

... be subject to a systematic bias as measured locations of perforation shots can be offset due to errors in deviation surveys (see Bulant et al. 2007...