Canadian Geothermal Research Program

J. G. Souther

AAPG Special Volumes

.... Apparent east-west resistivity is fairly constant in the order of 20,000 ohm-meters whereas the north-south resistivity falls locally to less than 100 ohm...

BREAKING INTO BAKKEN POTENTIAL ON THE FORT PECK RESERVATION IN NORTHEASTERN MONTANA

LAWRENCE M. MONSON, DUANE F. LUND

Williston Basin Symposium

... trend in North Dakota and its logical extension into Montana by the relationship between the apparent water resistivity (Rwa) and free oil...

Lookeba Field (Part 1)

Richard D. Andrews

Oklahoma City Geological Society

... of at least 6%, and a resistivity of at least 50 ohm-m. These criteria are most evident in the lower Cunningham sandstone and are somewhat less apparent...

An Integrated Approach to Reservoir Characterization in the Illinois Basin: Multidisciplinary Studies

D. F. Oltz, H. E. Leetaru, B. Seyler, S. T. Whitaker

AAPG Special Volumes

... meeting, Dallas, Texas, September 1980, SPE paper 9382. Lang W. H., 1973, Porosity-resistivity cross-plotting: The Log Analyst, January-February, v. 14...

“Recognizing Large SP Anomalies in the Cretaceous Carbonates Along the Balcones System, and How to Interpret Them”

John V. Crues, Jr.

Bulletin of South Texas Geological Society

...) change rapidly, and it is difficult to rely on apparent water resistivities (Rwa) calculated from porosity and resistivity logs. Using the SP log...

Abstract: Rethink Ground Water Mapping and Management Strategies for Unconventional Hydrocarbons using Airborne EM; #90224 (2015)

Andrea Viezzoli

Search and Discovery.com

..., extract, protect and manage ground water has become apparent in Canada over the last few years. Both the industry and the regulators realize...

Lithology Logging and Mapping Techniques: Chapter VII

George B. Asquith, Charles R. Gibson

AAPG Special Volumes

... 118------------------------ (sucrosic and intergranular). A crossplot of these two variables makes lithology more apparent. M* and N* values...

Geothermal Characteristics of the Volga-Ural Oil-Gas Province and the Romashkino Oil Field

D. I. D’yakonvo, B. A. Yakovlev, G. A. Tuzhilin, N. V. Parfeneko

Petroleum Geology: A Digest of Russian Literature

...-fold greater thermal resistivity and geothermal gradient. Further, the clayey rocks are clearly distinguished by a systematic increase...

Geochemistry and Thermal Maturity of the Upper Mississippian Fayetteville Shale Formation, Eastern Arkoma Basin and Mississippi Embayment Regions, Arkansas

M. Ed Ratchford, Lindell C. Bridges

GCAGS Transactions

... sequence has produced commercial quantities of gas and is characterized by very high radioactivity and high-resistivity log signatures, which...

VSP and Well Logs from a Shallow Test Well

Search and Discovery.com

... well logs (natural gamma-ray, 16”-normal and focused-beam resistivity, SP, temperature, density, and caliper) were acquired in the open hole immediately...

Detecting Hydrocarbon Reservoirs from Marine CSEM in the Santos Basin, Brazil, Marco Polo Buonora, Andrea Zerilli, Tiziano Labruzzo, and Luiz Felipe Rodrigues, #40402 (2009)

Search and Discovery.com

Unconventional Reservoirs: Basic Petrophysical Approach for Shale Gas; #80744 (2024)

Ahmed Rashed

Search and Discovery.com

... porosity-resistivity based total gas in-situ, and geochemical based adsorbed gas in-situ. The difference should be the free gas in-situ. The study...

Heterogeneity and Strength of Natural Gas Hydrate-Bearing Sediments, by D. Goldberg, G. Guerin, A. Janik, and T. Collett; #90035 (2004)

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Petroleum Geology of the Bakken Formation Williston Basin, North Dakota and Montana

FRED F. MEISSNER

Montana Geological Society

... Murray (1968) noted the peculiar behavior of the Bakken Shale Members are expressed on gamma-ray, sonic, neutron and resistivity...

A New Workflow for Improved Water Saturation Assessment in Organic-Rich Mudrocks Honoring Rock Fabric

Artur Posenato Garcia, Archana Jagadisan, Ameneh Rostami, Zoya Heidari

Unconventional Resources Technology Conference (URTEC)

...., Torres-Verdin, C. and Javadpour, F. 2011. Pore-Scale Quantification of Apparent Permeability and Electrical Resistivity of Hydrocarbon-Bearing Shale...

Petroleum Geology of the Bakken Formation Williston Basin, North Dakota and Montana

Fred F. Meissner

AAPG Special Volumes

..., neutron and resistivity logs and was one of the first to relate their petrophysical character to source-rock and overpressured reservoir properties. Using...

Multi-Channel Telemeter for Combined Geophysical Investigation of Wells

Ya. Ye. Belen’kiy, V. N. Mikhaylovskiy, A. N. Svenson

Petroleum Geology: A Digest of Russian Literature

... instrument. A block diagram of the in-hole instrument is presented in Figure 1. The output-voltage of the eight pairs of KS (apparent resistivity...

Results of an Investigative Program for Direct Exploration for Gas-Oil Fields on the Rudenkov Monocline

Ye. P. Puzdrovskiy, V. S. Karpiy, V. T. Muravik, R. V. Gerasimovich, Ya. I. Guzik, P. P. Shostak

Petroleum Geology: A Digest of Russian Literature

... of the information (all given a value of 1 here); Δ ρa is the value of the residual anomalous apparent electrical resistivity (%); β is relative change in average...

Calculation of Permeability and Initial Water Saturations from Wireline Logs in a Mature Carbonate Reservoir

F. Jerry Lucia, Jeffrey A. Kane

AAPG Special Volumes

... porosity, permeability, and pore size. Sonic, resistivity, and nuclear magnetic resonance tools have been used successfully in some reservoirs...

Stress, Fracture, and Fluid-flow Analysis Using Acoustic and Electrical Image Logs in Hot Fractured Granites of the Coso Geothermal Field, California, U.S.A.

Nicholas C. Davatzes, Stephen H. Hickman

AAPG Special Volumes

... other physical properties influence the resistivity or acoustic reflectance contrasts associated with the fracture (Cheung, 1999). Thus, apparent...

Reservoir Geology and Petrophysics of the Upper Interlake Group, Nesson Anticline Area, North Dakota

R.F. Inden, R.M. Cluff, A.P. Byrnes

Rocky Mountain Association of Geologists

... is especially acute because conventional resistivity logging devices are unable to accurately determine deep formation resistivity in beds less than 3 to 5 feet...

Stratigraphic Boundary Between the Jurassic and Cretaceous Sediments in the Bukhara-Khivin Area

V. A. Rudik

Petroleum Geology: A Digest of Russian Literature

... limestones which have a higher apparent resistivity than the underlying rocks. This permits the lower boundary of the carbonate unit to be recognized...

Groundwater salinity in the southern San Joaquin Valley

Janice Gillespie, David Kong, and Stephen D. Anderson

AAPG Bulletin

... Belridge field, a salinity reversal is apparent below 2100 m (6890 ft). Waters above this depth are approximately 40,000 mg/L TDS, whereas water...

Improvements to Formation Evaluation, Almond Formation, Green River Basin, Wyoming

William P. Iverson, Thomas L. Dunn, Ronald C. Surdam

Wyoming Geological Association

... = 2.0 for calculating resistivity formation factors. The saturation exponent is accurately determined at n = 2.0 for use in Archie's equation. Such data...

A Novel Methodology of Using Well Log Analyses to Identify Brownfield and Greenfield ROZs in the Illinois Basin, #42524 (2020).

Nathan P. Grigsby, Nathan D. Webb, Scott M. Frailey

Search and Discovery.com

... saturation, the moveable hydrocarbon index, bulk volume water, and apparent water resistivity to pick the top and base of the main pay zone (MPZ...