Seismic to Well Ties with Problematic Sonic Logs, by Don Burch, #40078 (2003)

Search and Discovery.com

Logging and Interpretation Techniques for the B-Field, Offshore Northwest Java

R. E. Crumb, P. Berger

Indonesian Petroleum Association

... Services, Evaluation of Low Resistivity Simpson Series of Formations, SPE 14282. 7. Berger, P. 1988. Evaluating porosity and saturation in carbonate...

Experience in Geophysical Work in Deep Wells

S. L. Abramyan

Petroleum Geology: A Digest of Russian Literature

...) in the form of a break in the apparent resistivity and self potential curves, and the depth of occurrence of the marker is below the points...

Electromagnetic Survey of Permafrost Thickness in Northern Alaska in 1969 and 1970

George V. Keller

Pacific Section SEPM

... permafrost layer in the Barrow area. for the Comparing the histograms in the two areas, it is apparent that the resistivity of the permafrost...

Subtle, Bypass Carbonate Pay

Dan Hartman

West Texas Geological Society

... of the formation water. Log response under these conditions results in low contrast, low resistivity zones that appear to be wet, when in reality...

Using finite dipole lengths in complete earth 3D MT modelling

Wolfgang Soyer, Federico Miorelli, Randall Mackie

Petroleum Exploration Society of Australia (PESA)

... of dipole vs. point solutions show static effects in apparent resistivity, and phase differences down to ~10 Hz, illustrated also in two example...

The Luva Gas Field: Detailed Analyses Reveal Subtle Anomaly

Halfdan Carstens

GEO ExPro Magazine

..., integrated work flows, and a comprehensive understanding of the new technology, Rocksource has been able to not only explain the apparent false...

Geology and Oil-Gas Possibilities of the Uzen Anticline and Adjacent Regions of Stepnoy Mangyshlak

N. U. Imashev, P. N. Kuprin, V. N. Semov

Petroleum Geology: A Digest of Russian Literature

... formation of the Albian, which contains large concretions, is expressed on the electrical log by a weakly differentiated apparent resistivity curve...

Is it pyrite, or a shed?Ž: intricacies of induced polarisation surveying near grounded metallic infrastructure

Regis Neroni, Sam Corbett

Petroleum Exploration Society of Australia (PESA)

... could have a significant contribution in typical measured apparent chargeabilities. The survey layout emulated a standard dipoledipole time-domain...

Determining the porosity exponent m and lithology factor a for sandstones and their control by overburden pressure: A case study from the Gulf of Suez, Egypt

Mohamed S. El Sharawy, and Bassem S. Nabawy

AAPG Bulletin

...). The most important equations in the field of petrophysics history were introduced by Archie (1942). He related the apparent electric resistivity...

Geophysics and geomorphic observation for near-surface structures mapping of Seulimeum Fault on Lamtamot area, Northern Sumatra

Muhammad Yanis, Gozian Islami, Nazli Ismail

Geological Society of Malaysia (GSM)

... of electrode), the apparent resistivity (ρa) of the subsurface can be calculated using Eq. 3. ρa = K ∆V/I (3) Although the apparent resistivity data...

Reliable 1D magnetotelluric probabilistic inversion considering modelling assumption violations

Hoël Seillé, Gerhard Visser

Petroleum Exploration Society of Australia (PESA)

... probability distribution for apparent resistivity and phases of 𝒁 𝑫𝑬𝑻 . Bottom panels: calculated phase tensor parameters β and λ. Vertical dashed...

Basement Fractured Reservoir Characterization Using Seismic Attributes and Borehole Image in GiantŽ Area, Jambi Sub-Basin, South Sumatra Basin

Faris Mohamad Noor, C. Prasetyadi, Alexis Badai Samudra, Yosi Hirosiadi

Indonesian Petroleum Association

... well had borehole image (acoustic and resistivity image) on two separate intervals providing the fracture dataset. The open hole data test (DST...

Resistivity not Required: Fluid Identification From Nuclear Magnetic Resonance Logs, #41768 (2016).

Charlie H. Smith, Layne Hamilton, Lynda Ziane

Search and Discovery.com

... to 2 ohms lower in the section, but concordant with this rise in resistivity is a decrease in porosity. An apparent water-saturation calculation shows...

Gryazevaya Sopka - New Oil Field in the Caspian Sea

F. I. Samedov, L. A. Buryakovskiy, D. G. Dzhalilov

Petroleum Geology: A Digest of Russian Literature

... porous, permeable strata. The horizons of formation PK are distinguished by an apparent resistivity from 20 to 60 ohm m and by negative SP anomalies...

Calculation of the Effect of Clay Content in Determination of the Coefficient of Oil- and Gas-Saturation by the Resistivity Method

V. N. Dakhnov

Petroleum Geology: A Digest of Russian Literature

...Calculation of the Effect of Clay Content in Determination of the Coefficient of Oil- and Gas-Saturation by the Resistivity Method V. N. Dakhnov 1960...

A Petrophysical Model to Estimate Free Gas in Organic Shales, #40781 (2011)

Michael Holmes, Dominic Holmes, and Antony Holmes

Search and Discovery.com

... rights given by author. For all other rights contact author directly. saturation is determined by comparing shale apparent water resistivity...

An Overview of Anomalous Resistivities in Pay Zones

Steven M. Goolsby, Edward B. Coalson, Dan J. Hartmann

Rocky Mountain Association of Geologists

... of apparent resistivity (Ra) t o better measure Rt. The major reasons why Ra may not equal Rt are: 1) The resistivity of the mud in the borehole (Rm) may...

Electric Log Detection of Diagenetically Altered Reservoirs and Diagenetic Traps

William R. Almon , Alvin L. Schultz

GCAGS Transactions

... for current flow in these pore systems often causes them to appear "wet" on resistivity logs. Electric log evidence for diagenetically altered zones which may...

Temperature Profile and Geothermal Gradient in Block B West Natuna Basin; Case Study: the Impact on SW Calculation for Lower Arang Zone Belut-1 Well

Budi R Permana, Miftahul Firdaus

Indonesian Petroleum Association

...) is dependent on resistivity values either formation resistivity (Rt) or formation water resistivity (Rw), which is directly affected by the reservoir...

Generating geophysical models from text for constructing the dataset of learning-based MT inversion

Yutong Li, Hongyu Zhou, Rui Guo, Maokun Li, Aria Abubakar

International Meeting for Applied Geoscience and Energy (IMAGE)

... inversion Figure 4: (a) Ground truth resistivity model. (b) Inverted resistivity model with SDM. (c) True (left) and inverted (right) apparent resistivity...

SOUTH LAKE MARACAIBO LOG ANALYSIS

H. D. Brown, J. D. Cunningham, H. A. Salisch

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

... grain size increases the resistivity. It is also observed that the higher resistivity readings There is indication in Fig. 4 that larger grain sizes can...

WELL LOG ANALYSIS IN THE CRETACEOUS GAS SANDS OF NORTHERN MONTANA

E. B. CAMPEN

Montana Geological Society

... areas as standard for the analysis of clean or shaly gas sands. Using these two logs, along with Gamma Ray and Resistivity logs...

Geophysical Methods of Study of Reservoir Properties of Rocks

V. N. Dakhnov

Petroleum Geology: A Digest of Russian Literature

.... As a result, in most cases there is no possibility for determining reservoir properties by self potential, radiometric diagrams, or apparent resistivity logs...

AAPG Archie Series, No. 1, Chapter 10: Modeling Log Responses in Thinly Bedded Reservoirs

Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia

AAPG Special Volumes

... models for lithology, porosity, and resistivity logs are also described. The modeling techniques introduced here are the building blocks...