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The AAPG/Datapages Combined Publications Database
Showing 1,338 Results. Searched 200,357 documents.
Abstract: Application of Stepwise Regression for Selecting the Optimal Log Measurements for Hydraulic Fracturing; #90255 (2017)
Mehdi E. Far, John A. Quirein, Natasa Mekic
Search and Discovery.com
..., which can measure the radioactivity of uranium, potassium, and thorium). Other log measurements, including density, neutron porosity, and resistivity...
2017
Devonian Woodford in Oklahoma: Log Analysis and OGIP Determination in a Gas-Bearing Shale Using Standard Logging Suite
G. B. Asquith
West Texas Geological Society
... Resistivity, Bulk Density, and Neutron Porosity. The determination of Vcl, Vqtz, Vke, and Total Porosity using Bulk Density and Neutron Porosity data...
2010
Standard Interpretation: Part 4. Wireline Methods
Mark Alberty
AAPG Special Volumes
... with the environmentally corrected neutron reading in limestone porosity units and the vertical axis with the bulk density. Be sure that the chart and neutron log...
1992
Abstract: Permeability Modeling from Petrophysical Measurements in Tight Gas Sands: Empirical Relations Including Analyses of Saturation Profiles from Individual Porosity Log Responses ; #90055 (2006).
Search and Discovery.com
2006
Recent Advancements in Reservoir Description Techniques
Lori Higgins , Anwar Ghauri , Ashok Sinha
GCAGS Transactions
...-to-fluid line on the density vs. neutron crossplot. The "M" and "N" values are independent of porosity. This crossplot is very useful if there is a change...
1989
Gas Identification in Thin Beds Using LWD Measurements West Africa Offshore Example; #42171 (2017)
Stanley Oifoghe, Ono Daniel, Victor Okowi, Charlie Thompson, Ikechukwu Nwabueze
Search and Discovery.com
.... This is important because the density-neutron cross-over does not extend to the top of the reservoir. For this analysis, we computed the total porosity...
2017
Son of Crossplot Fights Back
Piers Cooke-Yarborough
Southeast Asia Petroleum Exploration Society (SEAPEX)
... on The Density-Neutron Crossplot. (after Ellis and Case) Porosity and Lithology Determination From Formation Density log and Compensated Neutron Log. Fresh...
1986
Abstract: TOC Estimation of the New Albany Shale Group and Maquoketa Shale-Southern Illinois; #90308 (2017)
Mansour Khosravi Rokrok, Donna C. Willette
Search and Discovery.com
... on the density difference of organic carbon (0.9-1.05 g/cc) and mineral matrix (2.65-2.71 g/cc) that porosity logs (sonic, density, or neutron) measure...
2017
PETROPHYSICAL TRAITS AND RESERVOIR PERFORMANCE IN THE HRUBETZ ELLENBURGER FIELD, COLEMAN COUNTY, TEXAS
STEPHEN HARRELL
Fort Worth Geological Society
... the combination density log and compensated neutron log. Porosity is measured using a matrix density of 2.71 grams per cubic centimeter and apparent limestone...
1985
Electrofacies Identification of Lithology and Stratigraphic Trap, Southeast Lost Hills Fractured Shale Pool, Kern County, California: ABSTRACT
M. E. Mulhern, J. E. Laing, J. E. Senecal, R. E. Widdicombe, C. Isselhardt, J. R. Bowersox
AAPG Bulletin
... suites (bulk density, neutron porosity, gamma ray, and delta time) were compared to the data base and automatically assigned electrofacies. Twelve...
1985
Oil-Base Mud Filtrate and Hydrogen Index Effects on Magnetic Resonance Porosity in Gas Reservoirs
Search and Discovery.com
N/A
ABSTRACT: Correlation Between Gamma Ray, Density and Neutron Logs and Whole Rock Elemental Geochemistry Using a Neural Network Model, by Smith, Christopher N.; Assous, Said; Busch, Rainer; #90155 (2012)
Search and Discovery.com
2012
Lithology Determination from the Overlay of Density and Neutron Logs
John H. Doveton
Special Publications of SEPM
... of true porosity. The calculation of porosity from either the neutron, density or sonic logs is keyed to the log response of the matrix. The identification...
1994
Generating Missing Logs -- Techniques and Pitfalls, by Michael Holmes, Dominic Holmes, and Antony Holmes, #40107 (2003).
Search and Discovery.com
2003
Mixed Reservoir Wetting in Unconventional Reservoirs and Interpretation of Porosity/Resistivity Cross Plots, Derived From Triple-Combo Log Data
Michael Holmes, Antony M. Holmes, Dominic I. Holmes
Unconventional Resources Technology Conference (URTEC)
... – Vma A density/neutron combination to calculate porosity is preferred, as this is essentially not affected by changing matrix density and fluid content...
2017
Abstract: EPMI'S Use of the HP-41C for Wellsite Log Analysis
Don M. Murdock
Geological Society of Malaysia (GSM)
...-December 1981 Copyright © 2017 by Geological Society of Malaysia (GSM) 208 method which utilized density-neutron crossplot has been simplified...
1981
ABSTRACT: Wireline Log Modeling of Geologic Data: Application to Automated Lithology Identification, by David E. King and John A. Quirein; #91043 (2011)
Search and Discovery.com
2011
A Multilog-Evaluation Package Using Linear Programming Techniques to Evaluate Porosity and Lithology in Hydrocarbon Bearing Complex Lithologies
P. J. D. van Ditzhuijzen, D. Masson
Southeast Asia Petroleum Exploration Society (SEAPEX)
... of these points are shown as A and B. Assuming two minerals, calcite (limestone) and dolomite, and two logs, density and neutron log, the porosity...
1984
The Petrophysical Integration of Four Volumetric End Points Applied to an Indonesian Carbonate
Mark Deakin, David R. Smith
Indonesian Petroleum Association
... corrected. Porosity Log Integration The environment corrected neutron log is corrected for shale such that it tracks density porosity over varying shale...
2003
Permeability Estimation from Well Logs Using Probabilities
B. B. Farrow
Petroleum Exploration Society of Australia (PESA)
...-electric geophysical logs, viz. gamma ray, bulk density, neutron porosity and sonic. The method is based on a detailed statistical analysis of core and log...
1989
Fraclog: A Computerized Process for the Interpretation of Well Logs in Naturally Fractured Reservoirs
Roberto Aguilera, Luis A. Acevedo
Oklahoma City Geological Society
... saturation in the primary porosity, secondary porosity and the composite system. The process utilizes conventional well logs such as resistivity, density...
1984
3D Seismic Reservoir Characterization and Delineation in Carbonate Reservoir; #41760 (2016)
M. N. Alamsyah, Bambang W. Handono, Andri Syafriya
Search and Discovery.com
..., Acoustic Impedance (AI) Log derived from Sonic and density log, Neutron-Porosity Log and Resistivity Log shows good separation for gas zone...
2016
The Sand-Silt-Clay (SSC) Model: An Advanced Petrophysical Analysis and the Essential Applications to Lithology Computation, Permeability Estimation and Saturation Modeling, #42489 (2020).
Yudiyoko Ega Sugiharto, Gamal Ragab Gaafar
Search and Discovery.com
.... The model has been developed from the Density-Neutron cross-plot to determine the lithology fractions and the porosity of the rocks. The cross-plot...
Unknown
DEVONIAN DAWSON BAY FORMATION IN NORTHWESTERN NORTH DAKOTA
KAREN DEAN
Williston Basin Symposium
... and gypsum are present only in trace amounts and have a negligible effect on log values. A cross-plot of density and neutron porosity values...
1982
Log-Derived Evaluation of Shaly Sandstone Reservoirs: ABSTRACT
Walter H. Fertl
AAPG Bulletin
...), water salinity, porosity, and conductivity of water-and hydrocarbon-bearing shaly sand reservoirs are based on resistivity, density, neutron...
1984