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The AAPG/Datapages Combined Publications Database
Showing 26,340 Results. Searched 200,693 documents.
Structural and stratigraphic control on the migration of a contaminant plume at the P Reactor area, Savannah River site, South Carolina
Antonio E. Cameron Gonzalez, Camelia C. Knapp, Michael G. Waddell, Adrian D. Addison, John M. Shafer
Environmental Geosciences (DEG)
.... Apparent resistivity values have been calibrated with CPT resistivity logs. Note the vertical low-resistivity discontinuity on each profile.High...
2010
Methods Used in Computing Secondary Equities, Wilmington Field, Los Angeles County, California
Dennis R. Allen
AAPG Bulletin
... variations and watered-out sands. Only sands with an apparent resistivity of 3 ohms or more were considered to have been originally saturated with recoverable...
1964
Probing deeper: On delineating basement features to investigate fractured aquifers in a rural community
Hendratta Ali, Manika Prasad, Ahmed Ismail, Njilah Isaac Konfor, Yene Atangana Joseph-Quentin, Oluseun Adetola Sanuade, Henry M. D. Agbogun, Mbida Yem, Alice Magha
International Meeting for Applied Geoscience and Energy (IMAGE)
... of apparent resistivity pseudosections by a quasi Newton method: Geophysical Prospecting, 44, 131–152, doi: https://doi.org/10.1111/j.1365-2478.1996.tb00142.x...
2022
Geophysics used to help find good quality groundwater in the Vientiane Plain, Lao PDR
Michael Hatch, Okke Batelaan, Eddie Banks, Somphasith Douangsavanh
Petroleum Exploration Society of Australia (PESA)
..., 1996. Rapid least-squares inversion of apparent resistivity pseudosections by a quasiNewton method, Geophysical Prospecting, vol. 44, 131-152...
2019
Shea Creek - A Deep Geophysical Exploration Discovery
Rodney R. Koch and Frank Dalidowicz
Saskatchewan Geological Society
... an apparent resistivity calculated from the following formula: ρa = 27πa K * V/I where V is the voltage difference between the two potential...
1999
AAPG Archie Series, No. 1, Chapter 12: Low-resolution Techniques
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
... analysis [Poupon et al., 1954], which use standard or high-resolution logs to solve the parallel-conductivity equation for sand-bed resistivity. The aim...
2006
Electrical Prospecting for Oil Structure
Karl Sundberg
AAPG Bulletin
... current galvanically, is generally termed the resistivity method. The Gish-Rooney process, which is the most widely known adaptation of this method...
1930
Gulf of Mexico Subsalt Deformation Zones: Weak Formation Integrity Rather than Anomalous High Pressure Zones
James C. Niemann
GCAGS Transactions
... calculated from shale transit time and resistivity logs, and supplemented by detailed drilling reports and available wireline pressure test data for 23...
1997
Electric Log Interpretation in Exploring for Stratigraphic Traps in Shaly Sands
Howard A. Slack , Carel Otte
AAPG Bulletin
... and the Effects of the Equivalence Principle in Resistivity Logging," Oil and Gas Jour., Vol. 50, No. 40, pp. 117-22. DE WITTE, L., 1954, "Resistivity Logging...
1960
The Use of Computerized Log Analysis to Determine in situ Lithologic Characteristics Pertinent to Secondary Recovery
R. H. Merkel, W. J. Head
CSPG Bulletin
... because the various tools average over differing vertical distances in the borehole. The apparent resistivity of the pore fluid (Rwa) was computed...
1977
Fracture Evaluation in the Austin Chalk
Tom Fett
South Texas Geological Society Special Publications
... rates and cumulative production totals strongly suggest large drainage areas. This large lateral extent is especially apparent when the overall...
1991
A Modern Day Geologic Hiatus
Edman R. Zink
South Texas Geological Society Special Publications
.... Electric log example of "apparently" favorable resistivity Figure II. Well correlation diagram illustrating the "true" vs. "apparent" dip. The "apparent...
1962
Kriging-based surrogate models for convergence acceleration of Markov chains: An example of magnetotellurics-dix joint inversion
Alejandro Quiaro, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the magnetotellurics inversion. Two experiments were carried out, assuming an error of 5% in apparent resistivity and 1.45 degrees in phase. Figure Figure 2: 1D...
2024
Petrophysics and Pore Pressure: Pitfalls and Perfection; #40654 (2010)
Andrew Buffin
Search and Discovery.com
... • Successive runs in a well may not be correctly depth matched • Tool sticking can cause apparent tool movement due to cable stretch – see tension logs...
2010
An Overview of the Awibengkok Geothermal Field
A. J. Noor, T. G. Rossknecht, A. Ginting
Indonesian Petroleum Association
... is the MT resistivity. In general, the reservoir is associated with a broad low resistivity anomaly. Figure 3 is a contour map showing MT apparent...
1992
Abstracts: Geophysical Study of the Peace River Landslide; #90173 (2015)
Oluwafemi O. Ogunsuyi, Douglas R. Schmitt, Derek Martin, James Morgan, and Corey Froese
Search and Discovery.com
... géologique de France, 178, 101–112. Loke, M. H., and Barker, R. D., 1996, Rapid least-squares inversion of apparent resistivity pseudosections...
2015
Unraveling the Eaglebine: A Sequence Stratigraphic Framework for the Eagle Ford Group in the East Texas Basin
A. D. Donovan, P. Johnson, S. R. Gifford, M. J. Meyer, S. Dangtran, M. Pope
GCAGS Journal
... is interpreted as the False Buda, is a moderate gamma ray (GR)/ resistivity unit, that is rich in Ca, but poor in total organic content (TOC), Al...
2023
A Tight Gas Sand Reservoir Characterization Approach in Delineating Different Benches across Lower Cotton Valley Rocks
Matthew Chumley, Bhaskar Sarmah, Joseph Anderson, Rojelio Medina, Hoda Tahani
GCAGS Transactions
... are typically characterized by low resistivity pay and varying pore throat size. Determining correct saturation and a reasonable permeability estimation...
2018
Geothermal Exploration in West Java
Solia Wiradiradja, Surahman Suari, Yunus Razali, L. Pekar
Indonesian Petroleum Association
... layer, one encounters the "target layer" of Darajat. Its apparent resistivity recorded on the present sounding varies from 2 to 7 Ohm.m. Its thickness...
1976
Permafrost Studies in the Norman Wells Region, Northwest Territories
P. J. Kurfurst, R. M. Isaacs, J. A. Hunter, W. J. Scott
CSPG Special Publications
... and hence lower in resistivity on the north side of the road. In the vicinity of the road itself the marked low in apparent resistivities indicates...
1973
ABSTRACT: Basin-Wide Delineation of Gas Shale Sweet Spots using Density and Neutron Logs; Implications for Qualitative and Quantitative Assessment of Gas Shale Resources; #90122 (2011)
Mark Ver Hoeve, Steven Corey Meyer, Joseph Preusser, and Astrid Makowitz
Search and Discovery.com
... will present two approaches to identifying “sweet spots”; 1) “Apparent Shale Porosity” *Thickness Mapping and; 2) Neutron “Gas-Effect” and discuss...
2011
Accuracy of Archies law for clayey soils with high swelling capacity
Sina Saneiyan, Ethan Siegenthaler, Daniel Gimenez, Lee Slater
International Meeting for Applied Geoscience and Energy (IMAGE)
... measure the electrical resistance (R) of a sample across four electrodes and calculate the apparent electrical resistivity (𝜌! – units of Ohm.m...
2022
Comprehensive Fracture Evaluation Using Wireline Borehole Imager and Array Acoustic Tools
Cahyo Nugroho, Gunawan Sucahyo, Adriaan Bal, Pipin Ariyanto, Wilfred Samosir, Edison Nadeak
Indonesian Petroleum Association
... existence, fracture networks, fracture aperture and fracture permeability profile. In addition, Gamma Ray, Resistivity, Neutron and Density logging...
2018
Using Advanced Formation Evaluation and Well Placement Techniques in Horizontal Wells to Improve Reservoir Delineation and Avoid Problem Areas, Jason L. Pitcher, D. Hoyt, Jean Henderson and M. Bittar, #40459 (2009)
Search and Discovery.com
2009
Incorporating capillary pressure, pore throat aperture radii, height above free-water table, and Winland r35 values on Pickett plots
Roberto Aguilera
AAPG Bulletin
.... true resistivity (in some cases apparent resistivity or true resistivity affected by a shale group) should result in a straight line for intervals...
2002