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The AAPG/Datapages Combined Publications Database

Showing 26,326 Results. Searched 200,357 documents.

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Determination of the Porosity of the Mesozoic Sediments of the Middle Ob Area

Ye. I. Leont’yev

Petroleum Geology: A Digest of Russian Literature

.... The parameter of porosity Rp is determined with the microsonde according to the specific resistivity of the rock ϱpp close to the borehole and according...

1961

Some Applications of the Combined Use of Cure Analysis and Electric Log Data

T. Kennaird

Geological Society of Malaysia (GSM)

... assessment of pay zones can be made on the basis of log data alone. For example, zones showing an apparent water saturation of greater than 50 percent...

1988

Contribution to Prospect De-risking on the Veslemøy High, SW Barents Sea - An Offshore Vertical Source, Vertical Receiver CSEM Survey; #40868 (2012)

Enric Leon and Jon-Mattis Borven

Search and Discovery.com

... at the position of the target structure, consistent with preinversion apparent resistivity results. From the exploration company‟s point of view...

2012

Inversion of magnetotellurics data with enhanced structural fidelity

Federico Golfré Andreasi, Simone Re, Federico Ceci, Luca Masnaghetti

Petroleum Exploration Society of Australia (PESA)

... in the subsurface with a high degree of fidelity is limited by the “integral effect” of the apparent resistivity and by the generic regularization term Φ...

2019

Inversion of Magnetotelluric (MT) Data with Enhanced Structural Fidelity, #42333 (2018).

Federico Golfre Andreasi, Simone Re, Federico Ceci, Luca Masnaghetti

Search and Discovery.com

... of fidelity is limited by the “integral effect” of the apparent resistivity and by the generic regularization term Φ (𝐦) that privileges the smoothness...

2018

Evaluation of Geophysical Techniques in the Determination of a Salt Contaminated Environment, #80535 (2016).

Walter Reed, Michael Foust, Heather L. Lehto, James W. Ward, Jason Payne

Search and Discovery.com

... methods including galvanic DC resistivity, capacitively coupled resistivity, and frequency domain conductivity. Galvanic resistivity surveys have been...

2016

Sensitivities, Limitations, and Error Inherent in Resistivity-tool-response Modeling - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2

Hezhu Yin

AAPG Special Volumes

... for the resistivity to Sw calculation, then the apparent water saturation (Swa) can be expressed as (6-11) and then the ratio of Swa to the true water...

2011

Karst Cavern Identification and Deep Imaging in the Delaware Basin Using Magnetotellurics

Patricia de Lugão, Eric Corrêa, Berthold Kriegshäuser, Isaac Santos, Ludwig Kriegshauser

Unconventional Resources Technology Conference (URTEC)

... yields the impedance and two apparent resistivity and phase parameters that are used for analysis and interpretation (Vozoff, 1991). Since we have two...

2024

Efficient Geophysical Program for Investigation of Drill Holes in the Kuybyshev Region

B. Ye. Fel’dman

Petroleum Geology: A Digest of Russian Literature

...h resistivity with small thickness and clearly marks the base of a stratum and the position of the water-oil or water-gas contact. Values of apparent specifi...

1964

Modelling an Ultra-Long Electrical Device, and Application in Interpretation of a Hot Dry Rock Geothermal Reservoir

John Lovell, Makoto Miyairi, Kazuhiko Tezuka, Gordon Mowat

Indonesian Petroleum Association

.... By entering the apparent resistivity measured by the tool at a point on the Ra axis and then projecting down to the Rt axis, we obtain the true formation...

1990

Transformation of Resistivity to Pseudovelocity Logs: GEOLOGIC NOTE

Albert J. Rudman , Joseph F. Whaley , Robert F. Blakely , Maurice E. Biggs

AAPG Bulletin

... the apparent resistivity (Ra), calculation of the corresponding transit time (TT^prime) proceeds from the relation EQUATION (1) where A, B, and C are empirical...

1976

Urban Geophysics: Geophysical Signature of the Mount Bonnell Fault and its Karstic Features in Austin, Texas

Mustafa Saribudak

GCAGS Transactions

... of 1 ohm-m. The synthetic apparent resistivity, calculated inverted, and synthetic model are given in Figure 5. Note the similarity between...

2012

Shallow Hazard Assessment and Interpretation Using Geoelectrical Data: Bungamas PSC Study Case, Onshore South Sumatra Area

Iswani Waryono, Nusatriyo Guritno, Putri Riadini, Agus Laesanpura

Indonesian Petroleum Association

... of an electric current (I) into the earth thru steel electrodes. Two ceramic porous pots are used as receivers with voltage unit (V). The apparent resistivity (ρa...

2013

New Technology to Acquire, Process, and Interpret Transient EM Data; #41579 (2015)

Anton Ziolkowski, Richard Carson, David Wright

Search and Discovery.com

... time of the peak of the earth impulse response with offset can be mapped to an apparent interval resistivity, creating a pseudo-resistivity section...

2015

Abstract: Quantifying Total Organic Carbon (TOC) from Well Logs Using Support Vector Regression; #90187 (2014)

Yexin Liu, Zhuoheng Chen, Kezhen Hu, and Chris Liu

Search and Discovery.com

... Conclusions We have first put forward methods to generate apparent logs (gamma ray, density, sonic and neutron) from resistivity to identify the shale gas...

2014

Use of Dipmeter Data in Clastic Sedimentological Studies (1)

C. HOCKER , K. M. EASTWOOD , J. C. HERWEIJER , and J. T. ADAMS

AAPG Bulletin

.... (February) Resistivity curves from he eight measuring electrodes of Schlumberger's Stratigraphic High-Resolution Dipmeter Tool{TM} (SHDT) can be processed...

1990

Abstract: Application of Induction Logging in Louisiana and Mississippi

C. A. Doh

GCAGS Transactions

... by a combination of the Induction, spontaneous potential, and short-normal resistivity curves. The basic advantages of Induction over conventional logging...

1955

Determination of Permeability by Resistivity Logging

L. A. Buryakovskiy

Petroleum Geology: A Digest of Russian Literature

...Determination of Permeability by Resistivity Logging L. A. Buryakovskiy 1959 50 55 Vol. 3 (1959) No. 1B. (January) 1. Dakhnov, V. N., 1955...

1959

Interpretation of the Geophysical-Logging Data on Deep Wells of the Western Cis-Caucasus

V. K. Popov

Petroleum Geology: A Digest of Russian Literature

..., ρzp/ρm = 40; c-D/dw = 32, ρzp/ρm = 25; d-D/dw = 32, ρzp/ρm = 10. ρk is apparent resistivity; ρzp is specific resistivity of the zone of penetration...

1966

Athabasca Oil Sands Exploration and Development Investigation Using the Helicopter-Borne Transient Electromagnetic Technique

Search and Discovery.com

... resolution of helicopter frequency domain systems. The resulting resistivity measurements are similar, but with lower vertical resolution...

2013

Reliability estimation of the prediction results by 1D deep learning ATEM inversion using maximum depth of investigation

Hyeonwoo Kang, Minkyu Bang, Soon Jee Seol, Joongmoo Byun

International Meeting for Applied Geoscience and Energy (IMAGE)

..., whereas the values below the MDI showed poor prediction results. In our workflow, the MDI obtained from the predicted apparent resistivity by a shallow...

2022

Geophysical investigation of mine waste in the King River Delta, Macquarie Harbour, Tasmania

Matthew J. Cracknell, Sibele C. Nascimento, Wei Xuen Heng, Anita Parbhakar-Fox, Thomas A. Schaap

Petroleum Exploration Society of Australia (PESA)

...), surface waves (Vs) and apparent resistivity for the Line 1 traverse. Both Line 1 and Line 2 (not shown) cross sections are similar in both...

2019

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

R. G. McCrossan

AAPG Bulletin

.... The distribution of these carbonates was detected b mapping the average apparent resistivity of a stratigraphic interval. The basin reached its maximum...

1961

A Practical Model for Organic Richness from Porosity and Resistivity Logs

Q. R. PASSEY , S. CREANEY , J. B. KULLA , F. J. MORETTI , and J. D. STROUD

AAPG Bulletin

...A Practical Model for Organic Richness from Porosity and Resistivity Logs Q. R. PASSEY , S. CREANEY , J. B. KULLA , F. J. MORETTI , and J. D. STROUD...

1990

Telluric Currents and Their Use in Petroleum Exploration

K. Vozoff , R. M. Ellis , M. D. Burke

AAPG Bulletin

..., the resistivity ^rgr can be calculated by EQUATION (2) Even if the earth is not uniform, E and H can still be measured, and an apparent resistivity...

1964

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