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The AAPG/Datapages Combined Publications Database
Showing 1,342 Results. Searched 200,630 documents.
Aquifer/aquitard Units of the Dakota Aquifer System in Kansas: Methods of Delineation and Sedimentary Architecture Effects on Ground-water Flow and Flow Properties
P. Allen Macfarlane , J.H. Doveton , Howard R. Feldman , J.J. Butler, Jr. , J.M. Combes , D.R. Collins
Journal of Sedimentary Research (SEPM)
... hydraulic conductivities, ratio of the two resistivities (SFL/ILd), porosity computed from the neutron and density logs, and the standard gamma-ray log...
1994
Understanding Geological Heterogeneity to Customize Field Development: An Example from the Vaca Muerta Unconventional Play, Argentina
Guillermina Sagasti, Martin Foster, Damian Hryb, Alberto Ortiz, Vicatoria Lazzari
Unconventional Resources Technology Conference (URTEC)
... electrofacies. The log response on crossplots shows similarities with electrofacies 1 and 3 but with increased neutron values. TOC and total porosity averages...
2014
Screening Techniques: Chapter 9
Myron K. Horn
AAPG Special Volumes
... (FOOTNOTE 1). The basic idea is that the Sonic log reflects matrix porosity; whereas the Density-Neutron combination yields total porosity. Thus...
1991
Multivariate Pattern Recognition and Classification Methods: Chapter 4
John H. Doveton
AAPG Special Volumes
... of observing a set of log responses, L, Fig. 5. Density-neutron crossplot of Zechstein carbonate electrofacies. From Stowe and Hock (1988). End_Page 70...
1994
Shale brittleness prediction using machine learning—A Middle East basin case study
Ayyaz Mustafa, Zeeshan Tariq, Abdulazeez Abdulraheem, Mohamed Mahmoud, Shams Kalam, and Rizwan Ahmed Khan
AAPG Bulletin
...) encompassing the total of 2007 data points. The log data include gamma ray, P-wave slowness, porosity, density (ρ), resistivity, and mineralogy logs...
2022
Evaluation of the Newburg Sandstone of the Appalachian Basin as a CO 2 geologic storage resource
Jack Eric Lewis
Environmental Geosciences (DEG)
... through the Newburg containing the following suite of logs: gamma ray (GR), density porosity (DPHI), and neutron porosity (NPHI). The areal extent...
2013
Lithology and reservoir properties of the Delaware Mountain Group of the Delaware Basin and implications for saltwater disposal and induced seismicity
Katie Smye, D. Amy Banerji, Ray Eastwood, Guin McDaid, Peter Hennings
Journal of Sedimentary Research (SEPM)
... and quality. Gamma ray (GR), resistivity (RES), bulk density (RHOB), and neutron porosity (NPHI) logs were used to correlate DMG formations (Fig. 3...
2021
Application of Log-Derived Geochemical Properties to Estimate the Gas-Storage Capacity of the Upper Cretaceous Lewis Shale, Sand Wash Basin, Colorado
John H. Doloff, James R. Lancaster
Rocky Mountain Association of Geologists
..., bulk density, neutron porosity, sonic delta-T, and deep, medium, and shallow resistivity curves. Twelve separate zones were identified within the Lewis...
2001
Dip Data Estimation From a Multi Depth Investigation Array Induction Tool for Improved Structural Analysis
Ade Setiawan, Samira Ahmad, Udit Kumar Guru
Indonesian Petroleum Association
... or with a wireline conveyed log. and bulk density, the formation bulk density can be estimated. Density measurements are usually affected by large...
2011
The Spectral Gamma-Ray Log
John H. Doveton
Special Publications of SEPM
... logs. The successful distinction of a radioactive limestone from a shale can usually be made from the use of density and neutron porosity logging data...
1994
The Manusela Formation — An Example of a Jurassic Carbonate Unit of the Australian Plate from Seram, Eastern Indonesia
Greg Kemp
Indonesian Petroleum Association
... and sidewall cores at around 15 to 20% in close agreement with that shown from the density-neutron cross-plot porosity. Permeability from petrographic...
1992
Cotton Valley and Smackover Producing Reservoirs; East Texas, North Louisiana, and South Arkansas Areas
Stephen E. Collins
West Texas Geological Society
...-Laterlog with Sonic (DIL-BHC) and the Density-Neutron with Gamma-Ray (FDC-CNL). The following are general log characteristics for both Smackover...
1978
Horizontal Well Evaluation to Determine Geological Facies, Mechanical Properties, and Natural Fracture Changes Using Slim Through-the-Bit Dipole Sonic and Oil-Based Microimaging Tools
Edgar Velez, Elia Haddad, Firas Al Shaikh, Ghada Barbour, Kyle Barrie
Unconventional Resources Technology Conference (URTEC)
... the ground truth for natural fracture distribution in any reservoir. 2. Petrophysical evaluation where bulk density, neutron porosity, induction...
2021
Recognition of Low Resistivity, High Permeability Reservoir Beds in the Travis Peak and Cotton Valley of East Texas
James R. Turner
GCAGS Transactions
... ohm-meter to ten ohm-meters occurs over the next eight feet. The effective porosity, derived from a clay corrected density - neutron cross plot varies...
1997
A Venture Into Early Middle Miocene Clastics: an Exploration Opportunity in the Western Part Of The East Java Basin
Anton Setyo Kristanto, Faza Dharmawan Erdanto, M. Fadli, Defri W. Widiyanto, Yugi Nusantara, Tino Diharja
Indonesian Petroleum Association
...-drill petrographic and log analysis, showed that the penetrated reservoirs have moderate to good porosity, however in general permeability is low except...
2018
An evaluation of the seal capacity and CO2 retention properties of the Eau Claire Formation (Cambrian)
Richard Lahann, John Rupp, and Cristian Medina
Environmental Geosciences (DEG)
... selected well has a gamma-ray log and at least two porosity-type logs, specifically sonic, density, or neutron logs. Resistivity logs were evaluated...
2014
Abstract: An Examination of the Arkoma Foreland Basin and its Petroleum System through Burial and Thermal History Modeling; #90257 (2016)
Julianne E. Lamb
Search and Discovery.com
... cases, the available log curves available for the study include gamma ray, resistivity, density, neutron, spontaneous potential, and sonic logs...
Unknown
Ramp Buildups in the Lower Strawn Limestone (Penn.): Controls on Stratigraphic Reservoir Variability
David C. Harris
West Texas Geological Society
... are indicated. Intermound mudstones show upward-cleaning on gamma and neutron logs, and have negative density porosity due to pyrite. The bioherm interval...
1990
Gas Production from Shale
Davies, David K. and Vessell, Richard K.
GCAGS Transactions
... ray response, low resistivity and significant separation between density-neutron responses (see for example, Figure 8). Direct rock characteristics...
2002
Petrophysical Interpretation and Reservoir Characterisation on Proterozoic Shales in National Drilling Initiative Carrara I, Northern Territory
Liuqi Wang, Adam H. E. Bailey, Emmanuelle Grosjean, Chris Carson, Lidena K. Carr, Grace Butcher, Christopher J. Boreham, Dave Dewhurst, Lionel Esteban, Chris Southby, Paul A. Henson
Australian Petroleum Production & Exploration Association (APPEA) Journal
... logs, density and neutron-density crossplot interpretations. Gas content was estimated from the interpreted porosity, gas saturation, total organic...
2023
Woodbine Formation Sandstone Reservoir Prediction and Variability, Polk and Tyler Counties, Texas
Robert J. Bunge
GCAGS Transactions
... appears to be moldic from grain dissolution, with little primary porosity. Log tracks from left to right are: GR, Resistivity, Sonic and Density, Swe...
2007
Woodbine Formation Sandstone Reservoir Prediction and Variability, Polk and Tyler Counties, Texas; #10331 (2011)
Robert J. Bunge
Search and Discovery.com
... on the Kincaid caused great excitement, showing 100 ft of net sand and 18 ft of net pay using a porosity cutoff of 9%. The thickness and log character...
2011
A More Accurate Integrated Multimineral Petrophysical Model in Unconventional Reservoirs using Data from Cuttings: A Case Study from Powder River Basin, USA
Khaled Ahmed, Peyton Lowrey, Karl Graham, Dick Merkel
Unconventional Resources Technology Conference (URTEC)
... is needed, sonic or NMR log results can be substituted for the bulk density to generate a porosity in conjunction with the SEM-EDX grain matrix density...
2020
Successful Well Placement in Multilayer Sandstone Achieving Maximum Reservoir Exposure
Muhammad Aip, Zeindra Ernando, Wemphy Ferdiana, Tengku Rasidi Tengku Othman, Cahyo Nugroho
Indonesian Petroleum Association
... of resistivity showing gas containment. After the well encountered low GR value with good porosity indicator from Density-Neutron, the well was build inclined...
2019
The Impact of Salt Dissolution on Hydrocarbon Distribution within the Mannville Group in West-central Saskatchewan
Peter D. Hill
Williston Basin Symposium
.../neutron logs from well 111/09-04-048-21W3/00, illustrating a channel reservoir well-log signature from the Rex Member. B) Gamma-ray and density/neutron...
2019