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The AAPG/Datapages Combined Publications Database

Showing 25,170 Results. Searched 191,954 documents.

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Recognition of boulder in granite deposit using integrated borehole and 2D electrical resistivity imaging for effective mine planning and development

Muhammad Junaid, Rini Asnida Abdullah, Radzuan Saa'ri, M. Alel, Wahid Ali, Arshad Ullah

Geological Society of Malaysia (GSM)

... having lengths of 400 m each, schematized in Figure 3. The subsurface apparent resistivity data was acquired by exploiting multichannel ABEM LS...


Geophysical Signature of Haby Crossing Fault and Its Implication on Edwards Recharge Zone, Medina County, Texas

Mustafa Saribudak, Alf Hawkins, Kerlon Saraiva, Jenna Terez, Kim Stoker

Bulletin of South Texas Geological Society

... can be combined into a single apparent-resistivity data set during processing. Appropriate quality assurance/quality control procedures such as testing...


The Use of Geoelectrical Imaging Surveys for the Delineation of Different Subsurface Geological and Man-Made Features

S. S. Abdul Nassir, C. Y. Lee

Geological Society of Malaysia (GSM)

... multi-electrode Wenner system. The apparent resistivity datum pOints arrangement E1 E50 xxxxxxxxxxxxxxxxxxxxxxx~x~xxx~x~xxx~xxxxxx~xxxx...


A Comparative Study of Conventional Arrays of Resistivity Prospecting with Differential Arrays

K. K. Sharma, S. Jayashree

Geological Society of Malaysia (GSM)

... over a conducting substratum (Fig. 2). For the first case (Fig. 1) the apparent resistivity curve obtained with a dipole array differs from those...


Expulsion of Water from Clays with Anomalously High Pore Pressures in Reservoirs

Kh. B. Yusufzade, G. I. Nabiyev, E. N. Dergunov

Petroleum Geology: A Digest of Russian Literature

... considerably. Indication of the phenomenon is an increase in values of apparent electrical resistivity in clay members of those wells drilled at some...


Analysis of Magnetite Mineral Influence on Clean Sandstone Reservoir Resistivity through Correction Methods in Low Resistivity Pay Zone

Erwandi Yanto, Sarju Winardi

Indonesian Petroleum Association

...Analysis of Magnetite Mineral Influence on Clean Sandstone Reservoir Resistivity through Correction Methods in Low Resistivity Pay Zone Erwandi Yanto...


Determination of the Initial Water-Oil Contact in the Clastic Reservoirs of the Devonian of Tataria

D. A. Shapiro

Petroleum Geology: A Digest of Russian Literature

... contact is recorded by a weak flexure on the curve of apparent resistivity and sometimes by a completely smooth curve. In many cases the water-oil contact...


Geophysical Measurements for Archaeological Investigation: Case Studies in Malaysia

Abdul Rahim Samsudin, Umar Hamzah

Geological Society of Malaysia (GSM)

... resistance directly in ohm and values' are converted to apparent resistivity by multiplying the resistance by the appropriate geometry factor for the array...


L-X Bar Field

Editors: Edward D. Dolly and James C. Mullarkey

Rocky Mountain Association of Geologists

...L-X Bar Field Editors: Edward D. Dolly and James C. Mullarkey Producing Low Contrast, Low Resistivity Reservoirs Guidebook - 1996 WERNER-WILSON #2 L...


On the Resolution of Modern Structural Electrical Surveying

L. A. Brushyanin, B. A. Lyapustin, B. V. Bucharskiy, V. A. Sidorov

Petroleum Geology: A Digest of Russian Literature

.... It is possible to calculate the relationship of apparent longitudinal conductivity Sk to time or depth of investigation Hk. These curves can...


Identification of unconfined aquifer using 3D resistivity analysis at Simpang 5 area, Semarang, Central Java, Indonesia

Supriyadi, Fianti, Dwi Rizki R., Agus Setyawan, Ronaldo Talapessy

Geological Society of Malaysia (GSM)

... strength (I) is used to determine the apparent resistivity value, as shown in Equation 3. ρa= k ∆V/I (3) where ρa is apparent resistivity, k is geometry...


Guard Electrode

H. K. McArthur

Tulsa Geological Society

... resistivity, mud resistivity, hole size, and apparent resistivity. This is the case for non-invaded formations. Ra equals apparent resistivity...


Magnetotelluric for Petroleum Investigation

Bayu A. Pramudhita, Deni Saputra, Royo Handoyo, Suchandra, Irkham Wahyu S.

Indonesian Petroleum Association

...) and magnetic (H) field. The frequency ranges are between 0.0001 kHz up to 1 kHz. Apparent resistivity {Pxy = 0.2*T [Ex / Hy]2} is the key of MT...



Richard H. Merkel

AAPG Special Volumes

... into the undisturbed formation to determine the true resistivity. As a result of invasion, what we measure with resis ivity tools is, in fact, an apparent...


Maestrichtean Sediments of the East Stavropol Area

I. A. Burlakov, M. S. Plotnikov, G. A. Polosin, Yu. Ye. Starchenko

Petroleum Geology: A Digest of Russian Literature

... of the Maestrichtean stage are expressed clearly by negative SP anomalies, which reach 110-120 mv, and by low values of apparent resistivity. High...


Supplemental Geologic Tools

R. G. Hamilton

Oklahoma City Geological Society

... is quite deep, the apparent resistivity values of the Induction curve may often be corrected to true resistivity if the porosity of the bed is known...


Time lapse in-hole electrical resistivity surveying during a shallow release of CO2 gas: Harvey, Western Australia

Brett Harris, Alex Costall, Hoang Nguyen, Karsten Michael, Ludovic Ricard, Barry Freifeld, Arsham Avijegon, Andrew Pethick

Petroleum Exploration Society of Australia (PESA)

... Representation of Time Lapse Dipole- Dipole Data Apparent resistivity for all time-lapse dipole-dipole quadrupoles can be simultaneously represented...


Application of an Innovative AEM System for Mapping Hazards and Water Resources in Oil and Gas Fields; #20304 (2015)

Scott R. Napier, Bill Brown, Shannon Frey

Search and

... groundwater thought to be contained in quaternary paleochanels. Modeling and interpretation of the data has resulted in imaging of subsurface resistivity...


Resistivity Imaging and Natural Potential Applications to the Antioch Fault Zone in the Onion Creek / Barton Springs Segment of the Edwards Aquifer, Buda, Texas

Mustafa Saribudak, Brian Hunt, Brian Smith

GCAGS Transactions

... ft thick on the upthrown side and about 100 ft of apparent thickness on the downthrown side. The resistivity results from the southern bank...


Reconstruction of Conventional Plot & Method to Define and Produce Bypassed Hydrocarbon Zone in a Low Resistivity Low Contrast (LRLC) Reservoir, a Case Study of Offshore North West Java Area

Didit Putra Kusuma, Shofiyuddin, Riezal Arieffiandhany, Bertha Sondang M, Wisnu Wijanarko, Atmaji Nugroho

Indonesian Petroleum Association

... including utilization of Buckle Plot and Apparent Water Resistivity (Rwa). Buckle plot has been introduced since 1965 (Buckle, 1965:42-52) and principally...


Integrated geophysical image of the hot spring in Rokan Hulu, Riau, Indonesia

Nur Islami, Mitri Irianti

Geological Society of Malaysia (GSM)

... electrodes, then a voltage measurement between two potential electrodes is measured to compute the apparent resistivity of the subsurface medium...


Use of Large Potential Probes for Evaluating the Productivity of Carbonate Sediments

A. S. Pestrikov

Petroleum Geology: A Digest of Russian Literature

... in specific resistivity are weakly contrasted on the apparent resistivity logs. These shortcomings are absent with potential sondes, which approach...


Does Lightning Strike Twice?

H. Roice Nelson Jr., Les R. Denham, Jim Siebert, Kathleen S. Haggar

GEO ExPro Magazine

...’ (Figure 2). Earth as Capacitor Corpus Christi Figure 3: Comparing 2017 lightning-derived apparent resistivity cross-section with the equivalent 1986...


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