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The AAPG/Datapages Combined Publications Database
Showing 26,335 Results. Searched 200,663 documents.
Basics of Resistivity Tools - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2
Hezhu Yin
AAPG Special Volumes
... apparent resistivity, Ra, as a function of tool geometry and spatial distribution of true formation resistivity (Moran and Chemali, 1985). Laplace...
2011
Joint inversion of magnetotelluric and seismic travel time data with intelligent interpretation of geophysical models
Hongyu Zhou, Rui Guo, Maokun Li, Fan Yang, Shengheng Xu, Zuzhi Hu, Deqiang Tao
International Meeting for Applied Geoscience and Energy (IMAGE)
... (ρ) =αD ∥F(ρ) − dobs ∥2 + λR ∥ρ − ρ ref ∥2 ρ 0 1 ∂ Ex iω µ ∂ z (3) ρ 0 i Ex 0 ω µ Hy ρ + λV · αV MT data are apparent resistivity...
2022
Standard Interpretation: Part 4. Wireline Methods
Mark Alberty
AAPG Special Volumes
... resistivity (Rw). The resistivity of the water (without hydrocarbons) is used to interpret the formation resistivity for saturation. 4. Determine...
1992
Neural network assisted responses simulation and data correction of array laterolog in invaded formations
Yueyang Han, Lei Wang, Donghan Hao, Xiyong Yuan, Nan Wang, Zhen Yang, Jianwen Zhou, Liwei Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... to either predict the laterolog responses or correct the apparent resistivity curves. The new method has integrated the high precision of physics-driven...
2024
ABSTRACT: Methods of Determination of Porosity and Permiability in the Heteogeneous Carbonate Reservoirs- a Review; #90118 (2011)
Abhishek Dey and Rishabh Johri
Search and Discovery.com
... to numerically simulate lateral log and induction apparent resistivity logs. If the input values of the porosity and the permeability are not correct...
2011
Geology of the Cored Deepwater Palaeocene Forties Sandstone Member of the 22/14b Huntington Oil Discovery, UK Central North Sea
Search and Discovery.com
... channel-like features and apparent depositional lobes in the Upper Forties and cored interval. One such channel is intersected by cored Forties well...
2013
Spectral Induced Polarization: A New Way for Hydrocarbon Prospect Prediction
Feisal Dirgantara
Indonesian Petroleum Association
... spectra obtained by normalizing observed apparent resistivity. The SIP system provides more efficient field work, better signal-to-noise ratio...
2008
Identifying Spikes in Sonic Slowness and in Resistivity in the Tuscaloosa Marine Shale Using Continuous Wavelet Transform
Carol Wicks, Samiha Naseem
GCAGS Journal
...Identifying Spikes in Sonic Slowness and in Resistivity in the Tuscaloosa Marine Shale Using Continuous Wavelet Transform Carol Wicks, Samiha Naseem...
2017
A New Approach of Thin Bed Analysis Using Innovative LWD Imaging to Improve Net-Pay
Restio Brata, Mario Petricola, Hengky NG, Rahmi Kemalawati, Budiyono, Yus Willian, Bambang Pujasmadi, Aditi Pal
Indonesian Petroleum Association
... is performed by using high-resolution resistivity data from wireline log, but recently an approach to performing thin bed analysis has emerged...
2016
Advanced Processing and Inversion of Two AEM Datasets for 3D Geological Modeling: The Case Study of Spiritwood Valley Aquifer; #80434 (2014)
Vincenzo Sapia, Andrea Viezzoli, Greg Oldenborger, Flemming Jørgensen
Search and Discovery.com
... the resistivity model. Furthermore, we compare inversion results with other available ground based geophysical data, focusing on electrical resistivity data...
2014
Log Interpretation in the Brackish Water Frio Trend
Terry Walker
GCAGS Transactions
... horizontally from the bore hole by 5-foot guard electrodes above and below which are kept at the same potential. An apparent resistivity which can...
1959
Petrophysics in High Angle and Horizontal Wells
David Maggs, Silvia Lattuada, Roger Griffiths, Mauricio Mele, Antonio Valdisturlo
GEO ExPro Magazine
... equation, available in the Techlog software platform. The overall result indicated that the apparent resistivity is slightly higher than would be recorded...
2014
Old Electrical Log Interpretation [Pre-1958], Chapter 4: The Electrical Log (ES)
Hilchie, D.W.
AAPG Special Volumes
.... If normal (AM) is in a bed where e (bed thickness) is less than 4 AM, the apparent resistivity may be too low. If bed thickness appears...
1979
A Comprehensive Quicklook Petrophysical Method to Log Analysis in Permian Basin Carbonates
George A. Anderson, III, George B. Asquith, Scott Frailey
West Texas Geological Society
... to apparent formation resistivity factors developed in the invaded zone, F(Rxo), and the uninvaded zone, F(Rd) in order to identify zones with residual...
2002
Productive Low Resistivity Well Logs of the Offshore Gulf of Mexico: A Summary
Glenmore Shelton, W. A. Hill
New Orleans Geological Society
...Productive Low Resistivity Well Logs of the Offshore Gulf of Mexico: A Summary Glenmore Shelton, W. A. Hill 1993 A1 A8 Log sections of over 150...
1993
Application of the ISF/Sonic Combination Tool to Gulf Coast Formations
N. A. Schuster , J. D. Baden , E. R. Robbins
GCAGS Transactions
... the largest contribution to the resistivity reading. Further details of the device are discussed in the Appendix. It is apparent from the above...
1971
Life Isnt Perfect: The Petrophysical Difficulties of Modeling the Permian
Tyler Croft, Aidan Blount, Adam McMullen, Sarah Warneke, Melanie Durand, Brian Driskill
Unconventional Resources Technology Conference (URTEC)
.... The rapidly changing geology becomes apparent when comparing formation pressures and formation water resistivity around the field. There is significant...
2018
Finding New Pay in Old Wells in Both Open and Cased Holes; #40677 (2010)
Richard Gartner and Herman Vacca
Search and Discovery.com
... DIVIDE BY 10 THE APPARENT WET RESISTIVITY. IF IT’S .3 OHMS RW= .03. QUICK WAY TO LOOK FOR PAY: TAKE THE WET SAND RT AND MULTIPLY BY 3; THEN LOOK...
2010
Horizontal Completions Improve Flow Rates and Recovery Efficiency in West Delta 54 Field Offshore Louisiana
B.J. Doyle , Bob Wonish , Tom Schroeder , D.E. Mathis
GCAGS Transactions
... drilling (MWD) directional information, gamma ray and resistivity measurements were taken with instrumentation that was 12.8 m ( 42 ft) (resistivity...
1997
Induction, Resistivity and MWD Tools in Horizontal Wells
S. Gianzero, R. Chemali, S. M. Su
Geological Society of Malaysia (GSM)
...Induction, Resistivity and MWD Tools in Horizontal Wells S. Gianzero, R. Chemali, S. M. Su Ceol. Soc. Malaysia, Bulletin 27, November 1990; pp. 211...
1990
Application of Micrologging to Determination of Porosity
H. G. Doll, R. Sauvage, M. Martin
GCAGS Transactions
... at BHT, Rw can be taken equal to 0.035, as a first approximation. Value of Rt -- The average apparent resistivity read on the long lateral throughout...
1952
Abstract: Effort Towards Improving Formation Evaluation (Paper 5)
Ko Ko Kyi
Geological Society of Malaysia (GSM)
... in Malaysian oil and gas fields comprise sands with low formation water salinity, low resistivity low contrast pay sands, thinly laminated sand shale...
1996
Understanding the Natural Fracture System in the Ultra-deep Sandstone Reservoir Using High-Definition Oil-Based Microresistivity Image Logs, Case Study from Junggar Basin
Renzhong Gan, Hao Zhang, Jing Chen, Weidong Huang, Xu Zhang, Bo Liu, Tao Zhang, Wei Wang, Guo Wei, Adaobi Elekwachi, Gamal Sultan
Unconventional Resources Technology Conference (URTEC)
... sandstone with high resistivity and high standoff responses. On the core, this is an open fracture with 45° apparent dip. The partially open fracture “C...
2022
Groundwater Investigation Using Combined Geophysical Methods, #40914 (2012)
Amarachi R Alisiobi, B. D. Ako
Search and Discovery.com
... and the corresponding potential difference is measured at the potential electrodes, which is then converted to apparent resistivity value by multiplying...
2012
Geophysical characterization of a leachate plume from a former municipal solid waste disposal site: A case study on Norman landfill
Md. Iftekhar Alam, Andrew Katumwehe, and Estella Atekwana
AAPG Bulletin
... of subsurface layers (Figure 2). Figure 2. Resistivity sections along the profile (modified from Alam et al., 2018). (A) Measured apparent resistivity...
2022