electrical conductivities in oil-bearing shaly sands
Numerical modeling of the role of water and clay content
Nov 23 2002In a series of experiments undertaken in petroleum industry on oil‐bearing shaly sands [Waxman and Smits 1968] concluded that the bulk conductivity of the rock is the sum of the water volume conductivity and of the shale surface conductivity They
Can we Distinguish Between Serpentinised Peridotites and
conducted a series of small-scale (100m - 7km) seismic electrical and electromagnetic experiments in the Oman ophiolite We also studied the microstructures and the physical properties (P-wave velocity electrical conductivity porosity ) of serpentinized harzburgites serpentinised wehrlites and gabbro samples from the field stations
Time
•Waxman M H Smits L M 1968 Electrical Conductivities in Oil-Bearing Shaly Sands Soc Pet Eng J 8 107–122 Saltwater-bearing sands (semi-confined aquifer) "Fresh"-water-bearing sequences (unconfined aquifer) Silt Layer SEA + Conductive-Reference Model: Inversion of Surface and Crosshole ERT datasets from September 2015
Log analysis in shaly formations
Point A plotted as an example corresponds to log readings of ϕ B = 2 2 g/cm 3 and ϕ N = 33 p u Interpretation by the lines on the plot yields 23% and V sh (or V lam) = 16 % Direct use of this crossplot assumes water saturation in the zone investigated by the tools
CSIRO PUBLISHING
The volume of shale calculation based on naturally occurring gamma rays frequently overestimates shale volume when radioactive material other than shale is present for example where sand appears to be shale In this situation shale volume calculations from other methods are highly recommended in order to avoid overestimation or underestimation of shale volume This paper introduces an
Electrical conductivity in shaly sands with geophysical
The model provides a very good explanation for the variation of electrical conductivity with these parameters Surface conduction at the mineral water interface is described with the Stern theory of the electrical double layer and is shown to be independent of the salinity in shaly sands above 10 −3 mol L −1 The model is applied to in situ
Joint seismic and electrical measurements of gas hydrates
Electrical conductance is a porous medium (1968) Electrical conductivities in oil-bearing shaly sand (1994) Electrical efficiency: a pore geometric-theory for interpreting the electrical properties of reservoir rocks Theoretical and experimental bases for the dual-water model for interpretation of shaly sands
Can we Distinguish Between Serpentinised Peridotites and
conducted a series of small-scale (100m - 7km) seismic electrical and electromagnetic experiments in the Oman ophiolite We also studied the microstructures and the physical properties (P-wave velocity electrical conductivity porosity ) of serpentinized harzburgites serpentinised wehrlites and gabbro samples from the field stations
Volcano electrical tomography unveils edifice collapse
Sen P N Goode P A Influence of temperature on electrical conductivity on shaly sands Geophysics 57 89–96 (1992) Waxman M Smits L et al Electrical conductivities in oil-bearing shaly sands Society of Petroleum Engineers Journal 8 107–122 (1968) Finizola A et al
Numerical modeling of the role of water and clay content
Nov 23 2002In a series of experiments undertaken in petroleum industry on oil‐bearing shaly sands [Waxman and Smits 1968] concluded that the bulk conductivity of the rock is the sum of the water volume conductivity and of the shale surface conductivity They
Can we Distinguish Between Serpentinised Peridotites and
conducted a series of small-scale (100m - 7km) seismic electrical and electromagnetic experiments in the Oman ophiolite We also studied the microstructures and the physical properties (P-wave velocity electrical conductivity porosity ) of serpentinized harzburgites serpentinised wehrlites and gabbro samples from the field stations
Selected Topics on Improved Oil Recovery
This book presents articles from the International Conference on Improved Oil Recovery CIOR 2017 held in Bandung Indonesia Highlighting novel technologies in the area of Improved Oil Recovery it discusses a range of topics including enhanced oil recovery hydraulic fracturing production optimization petrophysics and formation evaluation
[PDF] Electromagnetic Heating Methods for Heavy Oil
The most widely used method of thermal oil recovery is by injecting steam into the reservoir A well-designed steam injection project is very efficient in recovering oil however its applicability is limited in many situations Simulation studies and field experience has shown that for low injectivity reservoirs small thickness of the oil-bearing zone and reservoir heterogeneity limits the
Joint seismic and electrical measurements of gas hydrates
Electrical conductance is a porous medium (1968) Electrical conductivities in oil-bearing shaly sand (1994) Electrical efficiency: a pore geometric-theory for interpreting the electrical properties of reservoir rocks Theoretical and experimental bases for the dual-water model for interpretation of shaly sands
On the Correlation of Electrical Conductivity Properties
Jan 01 1972This study emphasizes the role that surface conductivity plays in electrical transport processes in porous media It shows that this term has to be included in the calculations where phase distributions or porosities are to be deducted from formation factor type measurements even in clean formations when electrolyte concentrations are low in applying a parallel resistance model of
Quaternary aquifer transmissivity derived from vertical
Vertical electrical sounding technique (VES) is used as an alternative approach to pumping test for computing the Quaternary aquifer transmissivity in the Khanasser Valley Northern Syria Waxman M H and L J M Smits (1968) Electrical conductivities in oil-bearing shaly sands SPE J 8 2 107-122 DOI: 10 2118/1863-A
Electrical conductivity induced polarization and
Electrical conductivity of the porous material versus pore fluid electrical conductivity using NaCl solutions (a) The log-log plot shows the electrical conductivity data of four representative samples (at four distinct porosities from 0 05 to 0 21) and for seven pore water conductivities (NaCl solutions)
Crain's Petrophysical Handbook
1 Electrical Conductivities in Oil Bearing Shaly Sands M Waxman L Smits SPEJ June 1968 This lengthy procedure does not lend itself to a graphical solution Review the references on this method before attempting to use it Good CEC data is still hard to come by
Waxman Smits
The Waxman-Smits equations for the interpretation of electric logs for water saturation in oil-bearing shaly sands was first proposed in 1966 and verified in 1972 Until these equations were proposed the industry was saddled with a myriad of equations based roughly on some measure of Vshale
Waxman M H Smits L J M Electrical conductivities in oil-bearing shaly sands [J] Society of Petroleum Engineers Journal 1968 243(6):107-122 [14] Archie G E The electrical resistivity log as an aid in determining some reservoir characteristics [J] Transactions of the AIME 1942 146:54-67 [15] Byrnes A P Cluff R Analysis of critical permeablity
Integrated petrophysical study to validate water
Aug 18 2020Waxman MH Thomas EC (1974) Electrical conductivities in oil-bearing Shaly sands: I The relation between hydrocarbon saturation and resistivity index II The temperature coefficient of electrical conductivity Soc Pet Eng J 14:213–225 Google Scholar
References — Electromagnetic Geophysics
Electric waves: being researches on the propagation of electric action with finite velocity through space Dover Publications 1893 HJ97 R H Hess and G L Johnson County digital geologic maps of Nevada Electrical Conductivities in Oil-Bearing Shaly Sands Society of Petroleum Engineers Journal 1968 doi:10 2118/1863-A Wei82
Genetic Analysis of Low Resistivity Reservoir
[2] Waxman M H Smits L J M Electrical conductivities in oil-bearing shaly sands SPEJ 1968 8(2): 107— 122 [3] Clavier C Coates G Dumanoir J The theoretical and experimental bases for the "dual water" model for interpretation of shaly sands SPE 6859 1977 1—27 [4]
US6686736B2
See for example M H Waxman et al "Electrical Conductivities in Oil Bearing Shaly Sands" SPE Journal vol 8 no 2 Society of Petroleum Engineers Richardson Tex (1968) In the case of laminated shale the layers sometimes are thick enough to be within the vertical resolution of and therefore are determinable by well logging
Evaluation of electrical conductivity of shaly sands using
Nov 01 1998In very shaly sands the magnitude of V sh is close to 1 and effective porosity (Φ o) is close to zero From Eq (13)follows that in this case Φ sh =Φ t It was assumed that shale content is proportional to the CEC (Q v) hence V sh ∼Q v Using linear regression analysis it was shown that in this case V sh can be replaced by 0 64 Q v as to yield Φ sh =Φ t Fig 2 shows the shale porosity
A Review and Analysis on Constructing Electrical
A Review and Analysis on Constructing Electrical Resistivity Models for Hydrocarbon Reservoirs Based on the Characteristics of Shale Distribution "Electrical Conductivities in Oil Bearing Shaly Sands " SPE Journal 8 pp 107-122 Worthington P F 1985 "The Evolution of shaly-sand concepts in reservoir evaluation " LogAnalyst Jan







