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

.... 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...

... annual meeting connectivity modeling weiss electrical conductivity complex fracture network References References Bear , J. , C. F. Tsang , and G. De Marsily , 2012 , Flow and contaminant transport in fractured rock : Academic Press . Beskardes , G. D...

..., 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 interaction soil ec case study seg international exposition plant...

... simulation electrical conductivity geophysical data seg seg international exposition conductivity hydraulic data References References Allard , D. , A. Comunian , and P. Renard , 2012 , Probability aggregation methods in geoscience : Mathematical Geosciences , 44...

... 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...

... 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...

... 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...

... understanding of the reservoir, decreasing the steam-to-oil ratio, locating missed pay, identifying thief zones, and more efficiently using resources (Singhai and Card, 1988). Because the electrical conductivity of a lithologic unit is affected by steaming, electric and electromagnetic methods are promising...

... Summary Electrical conductivity can be a diagnostic physical property for distinguishing geologic units and delineating the distribution of fluids such as hydrocarbons and saline water within these units. Electromagnetic (EM) methods are sensitive to conductivity contrasts and can be used...

... 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...

... 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...

... 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...

... to a remarkable degree. equation numerical result electrical conductivity approximation upstream oil & gas fractured media torquato effective conductivity complex reservoir conductivity percolation threshold jakobsen orientation aperture hydraulic fracturing self-consistent method...

... 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...

... that the North Chalk has excess conductivity and that a part of this is contributed by the calcite surface in addition to excess conductivity due to clay. Introduction Electrical conductivity in reservoir rocks provides us with information on hydrocarbon saturation (Archie, 1942) because hydrocarbons...

... not only isotropic quantities associated with propagation of EM wave in the formation, but also to invert for the full electrical conductivity tensor. As the conductivity in shale also depends on the microstructure of the sediments, joint analysis of both resistivity and elastic anisotropy may provide...