... geophysical inversion annual meeting annual international meeting semi quantitative approach electromagnetic field data inversion reservoir characterization hydraulic fracture geometry fracture geometry upstream oil & gas proppant electrical conductivity complex reservoir hydraulic fracturing...

.... Current EMI systems can be easily coupled with high-precision positioning systems, and by using Transmitter-Receiver (Tx-Rx) separations ranging from 0.3 m up to 4 m, multiple apparent electrical conductivity values can be measured for different but overlapping soil volumes. The measured data can be used...

... conductive fracture hydraulic fracturing modeling electrical conductivity complex fracture network Bear , J. , C. F. Tsang , and G. De Marsily , 2012 , Flow and contaminant transport in fractured rock : Academic Press . Beskardes , G. D. , and C. J. Weiss...

..., and subsurface properties. Presentation Date: Wednesday, October 17, 2018 Start Time: 1:50:00 PM Location: 204A (Anaheim Convention Center) Presentation Type: Oral peterson plant community electrical conductivity colorado ecosystem imaging gradient topography artificial intelligence...

... ABSTRACT Geophysics has long been used effectively to detect and delineate the presence of electrically conductive fluids such as landfill leachate, industrial wastes such as plating solutions, seawater and produced water (e.g., Hoekstra, 1998, Goldstein et al., 1990, and Ross et al., 1990...

... Presentation Type: ORAL joint distribution reservoir characterization realization secondary variable bss data integration approach hydraulic conductivity field integration bss artificial intelligence upstream oil & gas bayesian sequential simulation electrical conductivity geophysical...

... ABSTRACT A sound knowledge of geophysical response of rocks at high temperatures is essential for modelling geothermal problems such as reservoir properties. Thus we present laboratory measurements of the electrical conductivity of soaked sandstone samples. The goal of the research...

... current density permeability mesh electrical conductivity formulation cased well frequency simple geologic background galvanic source upstream oil & gas flux reservoir characterization casing and cementing log analysis magnetic permeability surface galvanic source casing...

..., and more efficiently using resources (Singhai and Card, 1988). Because the electrical conductivity of a lithologic unit is af- fected by steaming, electric and electromagnetic methods are promising tools to detect and image SAGD steam chambers. Additionally, these types of surveys can be much more cost...

... are well suited to submersible-based surveys. Since electrical conductivity of subseafloor materials can be frequency dependent, these induced polarization (IP) effects may affect the reliability of TDEM data interpretation. In this paper, we investigate IP effects on TDEM responses of deep-sea...

... Summary Structurally coupled joint inversion of seismic and electromagnetic data is a good candidate for recovering subsurface earth properties if the direction of change of electrical conductivity and acoustic impedance are systematically linked throughout a volume of earth. For example...

... Summary In this work we propose a new approach for the upscaling problem of electrical conductivity in the context of electromagnetic methods. We pose the upscaling problem as a parameter estimation problem, which allow us to develop a goal-oriented, quantitative framework that combines...

...). An electrically conductive proppant could create a significant physical property contrast between the propped region of the reservoir and the host rock. Electromagnetic geophysical methods can be used to image this property (Heagy and Oldenburg, 2013). However, traditional geophysical inversions are poorly...

... Summary This paper compares the theoretical models of electrical conductivity and hydraulic conductivity of a pore network system to assess whether resistivity logs are sensitive to hydraulic rock types. Pore-scale modeling work suggests that both electrical conductivity and hydraulic...

... electrical conductivity computational study media simulation approximation upstream oil & gas fractured media torquato effective conductivity orientation complex reservoir conductivity aperture conductivity contrast equation numerical result hydraulic fracturing self...

... assumption of pore geometry, we adopt computational rock physics approach in this study. Multi-resolution µCT images are taken for carbonate cores belonging to different facies from middle east carbonate reservoir. Electrical conductivity and elastic properties (Vp, Vs) are computed on 3D rock micro...

... reactive processes, such as ion exchange, thus changing the aqueous composition of the system, and consequently the fluid and bulk electrical conductivity. As a result, the measured electrical conductivity may not only reflect solely solute transport but also reactive processes. Here, we evaluate...

... measurements of the hydraulic and electrical conductivities. Finally, the overall viability of this upscaling approach is tested and verified by performing and comparing flow and transport simulation through the original and the upscaled hydraulic conductivity fields. Our results indicate that the proposed...

... water resistivity conductance real surface conductivity component electrical conductivity parallel resistor model surface area well logging resistivity relation börner hydraulic conductivity equation upstream oil & gas estimate hydraulic conductivity conductivity component seg seg...

... electrical conductivity structure apy land instrument arid part phase tensor research program reservoir characterization aboriginal community fractured rock frequency seg seg denver 2010 electrical conductivity borehole conductivity south australia groundwater resource constraint...