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The AAPG/Datapages Combined Publications Database
Showing 22,173 Results. Searched 200,357 documents.
Guard Electrode
H. K. McArthur
Tulsa Geological Society
... of Guard Log Rm equals Mud resistivity Rt equals True formation resistivity d equals diameter of bore hole c equals the length of Guard electrode...
1952
Smart stitching: adding lateral priors to ensemble inversions as a post-processing step
Gerhard Visser
Petroleum Exploration Society of Australia (PESA)
... equally spaced 1D resistivity ensemble inversions along a line. These models are assumed to be 1D resistivity images on a logarithmic scale; i.e....
2019
Analysis of Geophysical Well Logs from the Mariano Lake-Lake Valley Drilling Project, San Juan Basin, Northwestern New Mexico
James H. Scott
AAPG Special Volumes
.... The resistivity of the fluid in the borehole is typically lower than the resistivity of the rock, causing the measured values to be lower than the true...
1986
Atkinson Field: Barrier Bar or Channel-Fill Sandstone? Evidence from Geologic Well-Log Analysis
Alvin L. Schultz, Gary F. Stewart
Bulletin of South Texas Geological Society
... Geologists Bull., v. 74, no. 11, p. 1757–1760. Bruce, W. A. and Welge, H. J., 1947, The restored state method for determination of oil in place...
1991
Abstract: Some Applications of the Combined Use of Core Analysis and Electric Log Data
T. Kennaird
Geological Society of Malaysia (GSM)
... or minimum productive resistivity. Rmp. The true formation resistivity (Rt) must not fall below the Rmp if one is to produce hydrocarbons water-free...
1987
How Should We Measure Residual-Oil Saturation?
R. E. Wyman
CSPG Bulletin
..., known as the Archie equation, is still widely used today: (7) where Sw = water saturation Rw = formation-water resistivity Rt = true...
1977
Quantifying Hydrocarbon Saturation in the Highlands of PNG
Search and Discovery.com
N/A
Borehole Image Tool Design, Value of Information, and Tool Selection
Javier O. Lagraba P., Steven M. Hansen, Mirano Spalburg, Mohammed Helmy
AAPG Special Volumes
... high-resolution, high-resistivity true measurement with a correlation resistivity that uses the drill bit as the measure electrode. An accurate...
2010
Determining the porosity exponent m and lithology factor a for sandstones and their control by overburden pressure: A case study from the Gulf of Suez, Egypt
Mohamed S. El Sharawy, and Bassem S. Nabawy
AAPG Bulletin
.... S., 2001, Determination of porosity, formation resistivity factor, Archie cementation factor, and pore geometry factor for a glacial aquifer: Energy...
2018
The Use of LWD and its Impact on Petrophysical Evaluation in the Belida Field, Block 'B', South Natuna Sea
Agus Sutoto
Indonesian Petroleum Association
... of the Lower Arang Formation. The difference in resistivity measurements between conventional and LWD logs will be investigated further in this paper...
1994
Case Studies - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archies Series No. 2
Hezhu Yin
AAPG Special Volumes
... 120 120 Dip = 45° Rt = 40 ohm m 140 160 180 200 220 160 180 200 140 220 True Vertical Depth Resistivity (ohm m) 0.2 Measured Depth (ft...
2011
Petrophysics of the Ramsey Sandstone, Ford Geraldine Unit, Reeves and Culberson Counties, Texas
G. B. Asquith, S. P. Dutton, A. G. Cole, Muhammad Razi, Jose I. Guzman
West Texas Geological Society
..., Texas (modified from Ruggiero, 1985). Volume of Clay (Vcl) and True Formation Resistivity (Rt) Volume of Clay (Vcl)- The first step...
1997
Use of Computers to Perform Old Log Analysis
Damian G. Barrett
West Texas Geological Society
... with that area’s true effective porosity. Pseudo Deep Resistivity Calculation The study area has thin beds, and the majority of electric logs run were old E...
1995
AAPG Archie Series, No. 1: Bibliography
Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia
AAPG Special Volumes
... Resistivity Log Interpretation, in Transactions of the SPWLA 30th Annual Logging Symposium: Society of Professional Well Log Analysts, Paper M, 20 p...
2006
Practical Advances in Tight Gas Sands Core-Based Shaley Sands Water Saturation Analysis, by John Dacy
Search and Discovery.com
N/A
Practical Advances in Tight Gas Sands Core-Based Shaley Sands Water Saturation Analysis, by John Dacy; #90042 (2005)
Search and Discovery.com
2005
Fast Reservoir Calculations Using Seismic Data and Well Logs: ABSTRACT
Gary Hamill
AAPG Bulletin
... to calculation of effective porosity in a volumetric sense; and (3) well-logging parameters such as water saturation, true resistivity, water resistivity...
1984
Electric and Electromagnetic Prospecting for Oil
W. P. Jenny
AAPG Bulletin
... a constant that is dependent on the measuring arrangement. A simple procedure for the resistivity determination is given by the Gish-Rooney method...
1930
Petrophysical Analysis of “Old” Well Logs in the Phillips Petroleum Company Austin #1 in the Austin Upper Mississippian Field Lea County, New Mexico
G. B. Asquith, Dean C. Hamilton
West Texas Geological Society
...; true formation resistivity (Rt) was determined from the 18’8” lateral log. Porosity was determined from the 32” limestone lateral, the microlog...
2000
Analysis of Magnetite Mineral Influence on Clean Sandstone Reservoir Resistivity through Correction Methods in Low Resistivity Pay Zone
Erwandi Yanto, Sarju Winardi
Indonesian Petroleum Association
... to the formation water saturation in each pseudo-core to obtain the true resistivity pseudo-core value. Based on measurement results and data analyses...
2015
A Guide to Qualitative Interpretation of South Texas Electric Logs
Alvin L. Schultz
South Texas Geological Society Special Publications
... that of the formation water. As a result, a resistivity profile will develop with a zone of high resistivity near the borehole decreasing to the true...
1986
An Electrical Rock Physics Framework For CSEM Interpretation
Daniel Baltar, Neville Barker, Matthew Carr, Christopher Schmidt
GEO ExPro Magazine
... a lower limit to the true resistivity, producing a large uncertainty on the evaluation of Rn. GeoExPro Vol. 13, No. 1, February 2016 Copyright...
2016
Introduction
Richard H. Merkel
AAPG Special Volumes
... invaded resistivity, and, finally, the resistivity of the true formation. Hence, we need to have resistivity measurements which can penetrate...
1979
Petrophysics of Oil Reservoirs in the Eromanga Basin, South Australia
D. I. Gravestock, E. M. Alexander
Petroleum Exploration Society of Australia (PESA)
... corrections for hole size, mud weight and mud composition. Resistivity logs are corrected via algorithms provided by logging companies to yield true...
1989
AAPG Archie Series, No. 1, Chapter 2: A Roadmap for Evaluating Thin-bedded Clastic Reservoirs
Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia
AAPG Special Volumes
... representation of the true resistivities of the formation beds. The HPT calculated from the "measured" resistivity log is 2.62 ft [.8 m]. In the inversion...
2006