The temperature structure of the upper mantle based on magnetotelluric data beneath the western Qaidam Basin, northern Tibet, China

Lishui Zhou, Letian Zhang, Sheng Jin

International Meeting for Applied Geoscience and Energy (IMAGE)

..., and the tipper for periods in 0.01-10000s. The apparent resistivity error floor for TE mode is set to 100%, and the phase error floor is set to 1.43°. The TM...

Distribution of Upper Cenozoic Carbonate-Cemented Sandstones, Kuche Depression, Northwest China: Insights from High-Resolution Borehole Micro-Resistivity Imaging

Guangfa Zhong, Zaitian Ma, Ruilin Liu, Ningfen Wu

Journal of Sedimentary Research (SEPM)

...-Resistivity Imaging Guangfa Zhong, Zaitian Ma, Ruilin Liu, Ningfen Wu 2003 177 186 Vol. 73 (2003) No. 2. (March) High-resolution micro-resistivity images...

Use of the Dipmeter to Improve Formation Evaluation in Thin-Bedded Sand/Shale Sequences

J. E. Sallee

Southeast Asia Petroleum Exploration Society (SEAPEX)

... to the invaded zone resistivity. From the dipmeter curves it is apparent that there is little variation of dipmeter microresistivity through the sands...

Use of the Dipmeter to Improve Formation Evaluation in Thin-Bedded Sand/Shale Sequences

J. E. Sallee, B. R. Wood

Indonesian Petroleum Association

... is responding to the invaded zone resistivity. For dipmeter curves it is apparent that there is little variation of dipmeter microresistivity through...

Geophysical Investigations of the Cove Fort-Sulphurdale Geothermal System, Utah

Howard P. Ross, Joseph N. Moore

Utah Geological Association

... and each survey yielded 31.4 line-km of profile data. Apparent resistivity values were recorded for N= 1 to 6 or N= 1 to 7. The locations of all lines...

Core Analysis

Howard C. Pyle, John E. Sherborne

Tulsa Geological Society

... inversely with the resistivity values of electric logs. The salinity can not be expected to give the same correlation with resistivity values from different...

Using hydrologic model data to inform time-lapse ERT investigations of coastal processes

Christopher Terra, Lee Slater, Ryan Frederiks, Anner Paldor, Holly Michael

International Meeting for Applied Geoscience and Energy (IMAGE)

... regularization method to yield an apparent resistivity model for each time step and calculated differences between the resistivity distributions of later...

Old Electrical Log Interpretation [Pre-1958], Chapter 9: Salt Mud Surveys - Laterologs and Microlaterologs

Hilchie, D.W.

AAPG Special Volumes

... inch invasion diameter is assumed to be a constant, then these old laterologs should have their apparent resistivity (Ra) from the curve increased...

Petrophysical Evaluation of "Quasi Wet Pay Zones" (QWPZ) via Integration of Advanced and Conventional Wireline Data (Paper C1)

S. Ismail, M. M. Altunbay, N. Aula

Geological Society of Malaysia (GSM)

... Sdn Bhd) A “low resistivity-low contrast” (LRLC) and low porositypermeability sand earns a new name “quasi-wet-pay zone” (QWPZ) encompassing...

Abstract: 3D Focusing Inversion of Multi-transient EM Data in the Frequency Domain; #90171 (2013)

Guangpin Li, Johnathan Linfoot, and Bruce Hobbs

Search and Discovery.com

... a sharp and focussed image of the anomalous resistivity distribution. The methodology is tested on a synthetic marine EM data set which presents...

Magnetic Resonance Image Log Use in Evaluation of Low Resistivity Pay in the Attaka Field

Sigit Sutiyono

Indonesian Petroleum Association

... by conventional log analysis. However, shoulder bed effects causing apparent resistivity reduction are very prominent due to thinly bedded reservoirs...

Integration of Electrical Resistivity, Ground-Penetrating Radar, and Very Low-Frequency Electromagnetic Induction Surveys to Help Map Groundwater Contamination Produced by Hydrocarbons Leaking from Underground Storage Tanks

Alvin K. Benson, Nathan Brett Mustoe

Environmental Geosciences (DEG)

... resistivities of different rocks and/or fluids in the subsurface) obtained by iterative computer modeling of the apparent resistivity data. Because...

Paleogeographic Criteria for Exploration for Lithologic Pools in the East Kuban Depression

G. V. Maslennikova, P. V. Bigun, V. N. Gordiyenko

Petroleum Geology: A Digest of Russian Literature

... where later only marine sediments were deposited. Figure 3. Map of distribution of types of self potential and apparent resistivity logs of Aptian...

Harnessing Lightning in the Hunt for Hydrocarbons

Search and Discovery.com

Abstract: Methodology to Estimate Thermal Maturity from Petrophysical Calculations of Gas/Oil Ratios; #91201 (2022)

Michael Holmes, Antony M. Holmes, and Dominic I. Holmes

Search and Discovery.com

..., and resistivity well log responses. Correlation of GOR with Ro has been defined by Dow (1977) and Jarvie et al (2015). The basis for quantifying...

Using Ground-Penetrating Radar and Capacitively Coupled Resistivity to Investigate 3-D Fluvial Architecture and Grain-Size Distribution of a Gravel Floodplain in Northeast British Columbia, Canada

Adrian S. Hickin, Benjamin Kerr, Thomas E. Barchyn, Roger C. Paulen

Journal of Sedimentary Research (SEPM)

..., M.H., and Barker, R.D., 1996, Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method: Geophysical Prospecting, v...

Log Evaluation of Wells in the Tuscaloosa Trend of South Louisiana

John A. Stevenson

New Orleans Geological Society

... nor the short-spaced resistivity curve (SFL*, LL-8 or short normal) can be recorded, a Gamma Ray is combined with the DIL/Sonic. The porosity...

Water Saturations in a Wilcox Shaly Reservoir Sandstone, Fordoche Field, Point Coupee Parish Louisiana

Charles R. Berg , Robert R. Berg

GCAGS Transactions

... medium theory (EMT) and has been used successfully on a wide range of clayey, low-resistivity reservoirs. A further, independent test of saturations...

Tool Descriptions

Richard H. Merkel

AAPG Special Volumes

... is controlled by the resistivity contrast between the drilling mud and the formation water. Hence, if the resistivity of the drilling mud is known...

Selection of Logging-While-Drilling Measurements for Geosteering of Horizontal Wells in Unconventional Reservoirs

Joseph Gremillion, Mike Flowers, Nicholas Tvrdy, Michael Okoro, Zachary Newnam

Unconventional Resources Technology Conference (URTEC)

... companies. The figure shows the general apparent precision for GR is about 5 API, density precision is approximately .02 g/cm3, and resistivity precision...

Geophysical Investigations of the Hot Spring Occurrences in the Sungei Serai and Kampung Dusun Tua Areas, Hulu Langat, Selangor

Mohd Anuar Md. Razali

Geological Society of Malaysia (GSM)

... was done using the TEMIXP software package. RESULTS AND DISCUSSIONS TEM VOLTAGES AND APPARENT RESISTIVITY Although the TEM technique measures amplitude...

The Transition Zone and Determination of the Water-Oil Contact According to Geophysical Measurements

N. N. Sokhranov

Petroleum Geology: A Digest of Russian Literature

... the calculations of reserves. The maximum on the apparent resistivity curve and the middle of the transition zone in most cases do not correspond...

Exploration Models for Bakken Reservoirs: Williston Basin, North Dakota and Montana*

Jay T. Sperr

Montana Geological Society

... mapping of log characteristics can be used to define prospects for Bakken production. Meissner (1978) has shown that resistivity logs might...

Defining the Eyre Conductivity Anomaly with the Tumby Bay MT transect

Kate Robertson, Ben Kay, Lachlan Loader, Graham Heinson, Stephan Thiel

Petroleum Exploration Society of Australia (PESA)

... AusLAMP resistivity models. The significantly smaller site spacing of the Tumby Bay MT profile compared to AusLAMP (2 km instead of 55 km) has allowed us...

Determining petrophysical and hydrogeological parameters from historical bore logs for the Leederville-Parmelia aquifer, northern Perth Basin, using regression methods

Olga Filiptsova, Sheryl Ryan

Petroleum Exploration Society of Australia (PESA)

.... The resistivity log can be combined with the TPOR values to give the apparent formation water resistivity (RWA) using the Archie method for fully...