Characterization of near-surface fractures for hydrogeological studies using azimuthal resistivity survey: A case history from the Mamu Formation, Enugu (Nigeria)

Ahamefula U. Utom, Benard I. Odoh, Daniel K. Amogu, Amobi C. Ekwe, Boniface C. E. Egboka

Environmental Geosciences (DEG)

... and Lane (1996) determined the porosity and aperture of high-angle fractures using the azimuthal resistivity method. In the determination of fracture...

Definition, Identification, and Measurement of Normal and Abnormal Subsurface Pressures

Donald J. Timko, Lloyd C. Fons, William K. Grittman, Forest B. Rees

Houston Geological Society

... and plotted versus depth. Formation factor (F) is equal to the true resistivity of the formation (Rt) divided by the formations connate water resistivity...

ABSTRACT: Resistivity Modeling and Neural Network Synthetics—Powerful New Exploration and Development Tools

Steven M. Goolsby, Jeff S. Arbogast

Kansas Geological Society

... methods have been used successfully to overcome the limitations of resistivity tools used to measure true formation resistivity (Rt). Inexpensive, high...

Overly steep decays in airborne TEM data and their link to chargeability: example from the Howards East District, NT, Australia

Klara Steklova, Ken Lawrie, Esben Auken, Anders V. Christiansen, Gianluca Fiandaca

Petroleum Exploration Society of Australia (PESA)

... resistivity in deeper layers in parts of the survey. Next, we inverted the data with a dispersive earth model, i.e. including the IP parameters...

Smackover Reservoir: Interpretation Case Study of Water Saturation Versus Production

J.G. Guillotte , J. Schrank, E. Hunt

GCAGS Transactions

... = formation water resistivity Rt = true resistivity Sw = ([.017]/[(1.25)2 4.92])1/2 Sw = .47 Based on this Sw value this zone in the Smackover reservoirs...

Resistivity Curves from Complex Reservoirs: Under-Utilized Tools for Exploration and Production Geologists: ABSTRACT

Lowell W. Revett, Brian E. Lock

AAPG Bulletin

.... For example, true oil-water contacts encountered in the well bore display transitional resistivity values as upwardly increasing buoyancy pressures...

Abstract: Resistivity Modeling And Neural Network Synthetics -- Powerful New Exploration And Development Tools, by J. S. Arbogast and S. M. Goolsby; #90928 (1999).

Search and Discovery.com

Identification of Source Rocks on Wireline Logs by Density/Resistivity and Sonic Transit Time/Resistivity Crossplot: Crossplots: DISCUSSION

Yasin N. Aljawadi

AAPG Bulletin

...Identification of Source Rocks on Wireline Logs by Density/Resistivity and Sonic Transit Time/Resistivity Crossplot: Crossplots: DISCUSSION Yasin N...

Abstract: Fluid Status and Saturation Assessment in Low Resistivity Pay Carbonate Reservoir, Using Core Scale Petrophysical and Resistivity Modelling, by Francois Umbhauer, Jean Pierre Leduc, Eric Guyotte, and Abubaker ElSadawi; #90105 (2010)

Search and Discovery.com

Reservoir resistivity assessment, best practices, and pitfalls

Daniel Baltar

International Meeting for Applied Geoscience and Energy (IMAGE)

.... 𝑅𝑡 = well log measurements tend to underestimate the true reservoir resistivity, particularly in cases where the individual reservoir sand...

Application of Logging Tools For Improving Reservoir Interpretation - Workshop Summary

Gerald J. Kuecher

PTTC

... OVERVIEW Basic Log Review Logging tools provide data on the subsurface and borehole environment - as examples, temperature, fluid/zone electrical resistivity...

Section Seven: Use of Wireline Logs and Dipmeters on Diapiric Structures

New Orleans Geological Society

... and water saturation determination, wireline logs from diapiric structures have other uses. Resistivity logs are useful for identifying shale (or clay...

Frontmatter - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2

Hezhu Yin

AAPG Special Volumes

... uncertainties when the field deep-reading resistivity log approaches its sensitivity limit and true bed thickness is below the tool’s vertical resolution (i.e....

Resistivity Modeling as a Formation Evaluation Tool - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2

Hezhu Yin

AAPG Special Volumes

... true resistivity, Rt, from logs via a process known as inversion. This may be described as a process used to map the data space (a measured field log...

Magnetotelluric Transect of the Sevier Overthrust Belt in Southwestern Utah and Eastern Nevada

Jeffrey M. Johnston, Philip E. Wannamaker

Utah Geological Association

... complicated geometries, ρa versus T usually resembles a smoothed version of the true resistivity over increasing distances below the measurement site...

A Review of Well Log Interpretation Techniques for Carbonate Reservoirs of South-East Asia

P. Cooke-Yarborough

Southeast Asia Petroleum Exploration Society (SEAPEX)

...: Deep induction, shallow resistivity, sonic, gamma ray, S.P. Density, neutron, natural gamma ray spectroscopy, caliper. If these two surveys...

Abstract: What Is Rt? Logging-While-Drilling and Wireline Resistivity Measurements Spotlighted: an Offshore Case Study in Abu Dhabi; #90254 (2016)

Amr Serry, Sultan Budebes, Hassan AbouJmeih, Ahmet Aki, Michael Bittar

Search and Discovery.com

..., but it is also difficult to deduce true resistivity (Rt) and the flushed zone resistivity (Rxo), particularly in thin beds, from the numerous multi...

Gulf Coast Logging

Gunnar J. Teilmann, Robert E. Murphy

New Orleans Geological Society

... interbedded (sometimes on the order of millimeters) for conventional logging tools to properly resolve the true resistivity or porosity. Instead, the response...

Improved Methods of Geophysical Investigation of Carbonate Sediments of the Volga-Ural Region

V. G. Dvoretskiy, N. G. Nesterenko, A. V. Ruchkin

Petroleum Geology: A Digest of Russian Literature

... true resistivity (1). Thus, the most favorable environment for using lateral logging is the absence of deep penetration into permeable rocks. Analysis...

Quick 3-D Formation Model for Unconventional Carbonate Reservoirs by Resistivity Imaging-While-Drilling in Horizontal Wells

Search and Discovery.com

"Productive Low Resistivity Well Logs of the Offshore Gulf of Mexico": Causes and Analysis

Harold L. Darling, Robert M. Sneider

New Orleans Geological Society

..."Productive Low Resistivity Well Logs of the Offshore Gulf of Mexico": Causes and Analysis Harold L. Darling, Robert M. Sneider 1993 B1 B26 Low...

Improvisation Petrophysics Analysis Using TECWAL to Solve Water Saturation Problem in Low Resistivity Low Contrast Reservoir

Mohammad Reza, Pepi Sahal Mustafid, Zona Nuansa, Normansyah, Bangsawan Arief

Indonesian Petroleum Association

... reading increament of total gas (TG) and also gas chromatograph. Futhermore, by electric log data, the potential could be observed on true resistivity (RT...

Abstract: Pencirian geologi kejuruteraan dan geofizik batuan formasi Kenny Hill di tapak Kamsis H, Universiti Kebangsaan Malaysia (IN MALAY), Engineering Geological and Geophysical Characterization of Rocks of the Kenny Hill Formation at Kamsis H, Universiti Kebangsaan Malaysia

Lakam anak Mejus, Abdul Ghani Rafek, Abdul Rahim Samsudin, Umar Hamzah, Rahman Yaccup

Geological Society of Malaysia (GSM)

... of the important factors that is needed for the determination of the suitability ofan area for development. A study to characterize the Kenny Hill...

Exploitation of Geologic, Lithologic, Reservoir and Drilling Data to Improve Electric Log Interpretations

R. G. Hamilton

Tulsa Geological Society

... to predict the probable fluid production before testing. The above fundamental relationship states that the true resistivity (Rt) of a water-wet...

Fault Determination from Dipmeter Surveys

Robert Claret

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

...Fault Determination from Dipmeter Surveys Robert Claret CONFERENCIAS FAULT DETERMINATION FROM DIPMETER SURVEYS1 Robert Claret 2 Fig. 1: Claret...