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The AAPG/Datapages Combined Publications Database
Showing 1,342 Results. Searched 200,616 documents.
Estimating Organic Maturity from Well Logs, Upper Cretaceous Austin Chalk, Texas Gulf Coast
Gregory S. Hinds , Robert R. Berg
GCAGS Transactions
... and density-neutron logs (Figure 4). The resistivity response is shown by values of log readings averaged over the cored intervals. True resistivity (Rt...
1990
Spatial Variability of Reservoir Properties in a Stratigraphically Complex Geological Sequestration Target: The Devonian Sylvania Sandstone, Michigan Basin, USA; #80101 (2010)
Farsheed Rock and Dave Barnes
Search and Discovery.com
..., reworked, aeolian quartzose littoral sandstone of the Sylvania lithofacies. Core to wireline log calibration using gamma ray, density, neutron porosity...
2010
Kiva: T. 39 S., R. 25 E., SLB&M: San Juan County, Utah
Cindy L. Crawley Stewart, Karn F. Riley
Utah Geological Association
... perforate, breakdown and matrix acidize. Treatment size varies Logging Practice: GR-Dual Laterolog-MSFL-Cal, GR-Density-Neutron-Cal, GR-Sonic-Cal Number...
1993
Negative Production Factor Recognition and Separation from Other Pore Fluids with Advanced Logging Techniques: A Case Study from Junggar Basin
Zengbao Zhang, Xianbo Meng, Jianbo Lv, Pengpeng Yang, Liang Cai, Liu Zhong Li, Jin Long Wu, Xianran Zhao
Unconventional Resources Technology Conference (URTEC)
..., neutron etc. With density logs, in conjunction with the matrix density provided by the spectroscopy data, the density log total porosity is calculated...
2024
Scipio NW Field, Part 1: Upper Cromwell and Jefferson sandstone gas reservoirs in T. 8 N., R. 13 E., southwest Mclntosh County, Oklahoma
Richard D. Andrews
Oklahoma City Geological Society
... is relatively tight. The large density neutron porosity crossover of as much as 16 porosity units probably indicates pressure depletion, a fact noted...
2007
Reconstruction of the Subsurface Depositional History of Onshore Niger Delta Basin; #30497 (2017)
John Onayemi, Sunday Oladele
Search and Discovery.com
...; Gamma Ray log, Resistivity log, sonic log, Neutron log and Density log. • The seismic survey covered a wide area along OML-124 with 1400 seismic lines...
2017
An Integrated Study of Core and Well Log Data to Characterize Oil Sands in a Research Wellbore at Kearl Mine
Search and Discovery.com
N/A
Abstract: Improving Well Log Data with Machine Learning: An Application from the Powder River Basin;
Ridvan Akkurt, Terrilyn Olson, Scott Friedman, Celina Will
Search and Discovery.com
... or intervals with higher prediction uncertainties, allowing the expert to focus on the problems. Bulk density, neutron and compressional acoustic logs were...
Unknown
N/A
Volumetric Determination and Development Status of Jonah Field, by DuBois, Dean P., Thomas M Smagala, and Julia C Gwaltney; #90030(2004)
Search and Discovery.com
2004
Geological and Petrophysical Evaluation of Thin Bed Laminated Shaly Sandstones in Peragam Field, Offshore Brunei, With NMR and Tensor Resistivity Measurements
A. Manescu, A. Bal, I. Donaldson, Z. Ahmad, R. Krishnan
Indonesian Petroleum Association
... device a thin bed may be about 1 m whereas for a high-resolution density/neutron it may 30 cm, and for a borehole image log approximately 3 cm. Very few...
2009
Mapping Distribution of Sandstone and Seismic Multi-Attribute Analysis Using Linear Regression Method in the "RMS" Field, South Sumatra Basin
Clara Armiliany, Ryan Mulyadi Saragih, Aji Arif Sulaksono, Bagus Sapto Mulyatno, Ordas Dewanto
Indonesian Petroleum Association
... Sonic log is a type of log used to measure porosity, in addition to log density and neutron log by measuring the transit time interval (Δt), which...
2019
Seismic and Well-Log Inference of Gas Hydrate Accumulations Above the Umiak and Ya-Ya Gas Fields, Northwest Territories; #20284 (2014)
Gilles Bellefleur, Michael Riedel, Tom Brent
Search and Discovery.com
...-ray log in this interval indicates relatively clean sand. The density and neutron porosity have higher and lower values than those observed...
2014
Abstract: Design, Implementation, and Completion of a Horizontal Tight Gas Wellbore - Case Study: Green River Basin, Wyoming, by R. L. Billingsley, L. W. Evans, T. M. Anderson, and R. E. Lengerich; #90959 (1995).
Search and Discovery.com
1995
Evaluation of Low-Resistivity pay with Oil Base Mud Imager and NMP techniques, Example from Deep Water Nigeria, by Kamal Osman, Parvez Butt, and Souvick Saha; #90037 (2005)
Search and Discovery.com
2005
Log Evaluation of the Tight Rocks of South Texas
T.H. Fett
GCAGS Transactions
... and a compensated density-compensated neutron gamma ray log. The true formation resistivity (Rt) can be obtained from a dual induction log, even when...
1979
Empirical Relation Between Carbonate Porosity and Thermal Maturity: An Approach to Regional Porosity Prediction
James W. Schmoker
AAPG Bulletin
... carbonate-porosity data, derived from borehole gravity measurements and from suites of acoustic, neutron, and density logs, have been compiled for this basin...
1984
Creating an Initial Exploration Framework for the Berea Sandstone in the Appalachian Basin; #11121 (2018)
Savannah L. Rice, Jack Miles, Patrick Cullen, Brian Currie
Search and Discovery.com
... of <2.5 was used. Using resistivity, density, and neutron porosity, the average porosity and water saturation (Archie equation) were calculated...
2018
Integrated Rock-Log Calibration in the Elmworth Field - Alberta, Canada: Well Log Analysis Methods and Techniques: Part II
R. W. Hietala, E. T. Connolly
AAPG Special Volumes
..." density log adds to the confidence in porosity calculations as the density response is used to check neutron and acoustic porosities. An example...
1984
Quantitative Evaluation of Hydrocarbon Saturation in Shaly Freshwater Reservoirs
Paul F. Worthington, Paul W. Johnson
Indonesian Petroleum Association
... (%). SNP – sidewall neutron porosity log (limestone porosity units). FDC – density log (g cm-3). SN – short normal resistivity log (ohm m). IND – deep...
1987
Lithostratigraphy of the Woodford Shale, Anadarko Basin, West-Central Oklahoma, #50518 (2011)
Craig D. Caldwell,
Search and Discovery.com
... by density-neutron cross-over and are readily distinguishable on wireline logs. The more silica-rich mudrocks (CSM and SM) are likely dominated...
2011
Optimized Well Placement Using Cost Effective Logging While Drilling Real-Time Imaging Technologies in First Unconventional Horizontal Well in the United Arab Emirates: A Case Study, #80631 (2018).
Pierre Van Laer, Ehab Negm, Wael Fares, Emad Diab, Ahmet Aki
Search and Discovery.com
... -- ~~ ~ a,. '= ~ • ~ - l .... "'"'" L.s ~ ~ e - b I-" ,..- r' "C! > Offset Well 1 Logs Gamma Ray Resistivity Density Neutron Porosity Target Well...
2018
Analytical Method to Accurately Estimate Overpressure Magnitude: The Case Study from Indonesia's Tertiary Basins
Agus M. Ramdhan, Lambok M. Hutasoit, Arifin
Indonesian Petroleum Association
... and neutron porosity) will respond the presence of overpressure by deflecting into high sonic (or low velocity) and low resistivity, and low density and high...
2021
Mitigating Reservoir Property Uncertainty and Identifying the Boundary between Conventional and Unconventional Reservoirs: An Integrated Case Study from Mature Fields in the South Sumatra Basin, #20479 (2020).
Abraham J. S. Simanjuntak, Ricky N. Syamri, Abdurahman F. Muslim, Feruz Kausar, Wawan Hermawan, Grace S. Titaley,
Search and Discovery.com
... beds can be observed over this section as indicated by logs (GR & Density-Neutron) responses. Core descriptions indicate these shaly sandstone...
2020
Stress vs. Strain Understandings and Misconceptions in their Application to Hydraulic Fracturing; #80261 (2012)
Randy Koepsell
Search and Discovery.com
... Niobrara target Petrophysical Log Analysis – Pilot Hole Traditional resistivity, density, neutron, PEF and GR. Augmented analysis with elemental...
2012