Basic Open Hole Tools: Part 4. Wireline Methods

Mark W. Alberty

AAPG Special Volumes

... devices are used to determine formation resistivity at varying distances from the wellbore, which is used for correlation and the determination of water...

Integration of geology, petrophysics, and reservoir engineering for characterization of carbonate reservoirs through Pickett plots

Roberto Aguilera

AAPG Bulletin

... that a Pickett crossplot of interparticle porosity vs. true resistivity (in some cases, apparent resistivity or true resistivity affected by a shale group...

Shaly Sand Log Analysis Using Cation Exchange Capacity Data

Darrell C. Bush, Ralph E. Jenkins

Indonesian Petroleum Association

... of the technically sound Waxman-Smits-Thomas method more popular. Nomenclature Rt = True formation resistivity, ohm meters Rw = Formation brine...

Field Salinity Determinations and Sulphide Contamination

Robert Schwab

CSPG Bulletin

...Field Salinity Determinations and Sulphide Contamination Robert Schwab 1958 245 247 Vol. 6 (1958) No. 10. (November) Field determination of chloride...

Abstract: Evaluation of Low Resistivity, Low Contrast Productive Reservoir in the Malaysian Fields

Ahmad Sharby

Geological Society of Malaysia (GSM)

... principally from the presence of clay and other conductive minerals in reservoir sections and from underestimates of the true formation resistivity...

Electrical Resistivity an Aid in Core-Analysis Interpretation

G. E. Archie

AAPG Bulletin

... by true mathematical equations, these relations do follow definite trends. The electrical resistivity which is found useful in outlining different...

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

Hezhu Yin

AAPG Special Volumes

... relentlessly sought the true formation resistivity, Rt, the crucial property needed to estimate formation hydrocarbon saturation and reserves...

The Use of Electrical and Seismic Methods for Imaging Shallow Subsurface Structure of Limestone at Batu Caves, Kuala Lumpur, Malaysia

Abdul Rahim Samsudin, Mohammed I. Abu Shariah, Umar Hamzah

Geological Society of Malaysia (GSM)

... Abstract: Geoelectrical resistivity and seismic surveys were conducted to investigate subsurface structure of a selected limestone area at Batu Caves...

Methods of Determining the True Water Saturation of an Oil-Bearing Stratum

P. K. Gur’ba

Petroleum Geology: A Digest of Russian Literature

... area is cited. See Table 1. Table. Results of Determination of the True Water-Saturation of Productive Sands The porosity (kp) of the sandstone...

Determination of Cementation Exponent (M): Chapter II

George B. Asquith

AAPG Special Volumes

... the technique to this example, a correct m value can be determined. A Pickett crossplot is based upon the observation that true resistivity (Rt...

Resistivity Mapping and Petrophysical Study of Upper Devonian Inter-reef Calcareous Shales of Central Alberta, Canada

R. G. McCrossan

AAPG Bulletin

... to true resistivity would not be practical, nor is it necessary since we need not be concerned with absolute values but only with the relative values...

The Effect of KOH Lignosulfanate Drilling Muds on Spontaneous Potential Log Interpretation

P. J. Cockcroft, Imanudin, J. A. Owens, Basuki Wiwoho

Indonesian Petroleum Association

.... This is simplified by using equivalent resistivities such that: Equivalent and true resistivity relationships for NaCl solutions are shown in Chart SP-2...

Reservoir Characterization of Horizontal Wells in CD Carbonate Formation with Advanced LWD Technology

Budi Abrar, Zeindra Ernando, Dian Permanasari, Ihsan Taufik Pasaribu

Indonesian Petroleum Association

... for resistivity and sigma determination. The resistivity and sigma data therefore are more representative of the flushed zone than the true formation properties...

An Advanced Interpretation Technique Integrates Well Log and Core Data for Thin-Bed Reservoir Evaluation

Ashok Sinha , Tony Lawrence , Bill Simmons

GCAGS Transactions

.... This tool has a relatively shallow depth of investigation but the calculated resistivity can be enhanced as discussed later to estimate true thin-bed...

Log Evaluation of Wells in the Tuscaloosa Trend of South Louisiana

John A. Stevenson

New Orleans Geological Society

... of it (i.e., SARABAND* and Dual Water), and the parameters that must be measured or otherwise determined are: RT - True Formation Resistivity QE - Effective...

A Success Story in Identifying and Testing Strategy: Drilling the Stratigraphic Trap of Low-Resistivity Pay Reservoirs in the Upper Cibulakan Formation, Offshore Northwest Java Basin

Mohammad Reza, Darmawan B. Prihanto, Kinanti S. Anggarini, Raden Sebastian, Muhammad Arief Akbar

Indonesian Petroleum Association

... a true resistivity of 1-3ohmm. Structural play in ONWJ Mature Block has been massively explored and now is time to start exploring a new play...

Application of the Dual Porosity Concept for Well Log Interpretation of Jatibarang Volcanic Tuff

Soewono, Setyoko

Indonesian Petroleum Association

.... "Determination of true porosity and mineral composition in complex lithologies with the use of Sonic, Neutron and Density Survey". SPE Reprint Series...

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).

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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...