Modeling electromagnetics on cylindrical meshes with applications to steel-cased wells

  title={Modeling electromagnetics on cylindrical meshes with applications to steel-cased wells},
  author={Lindsey J. Heagy and Douglas Oldenburg},
  journal={Comput. Geosci.},

Electrical and electromagnetic responses over steel-cased wells

Electrical and electromagnetic (EM) methods can be diagnostic geophysical imaging tools for monitoring applications, such as carbon capture and storage or hydraulic fracturing. In these settings, it

Direct current resistivity with steel-cased wells

The work in this paper is motivated by the increasing use of electrical and electromagnetic methods in geoscience problems where steel-cased wells are present. Applications of interest include

Modeling and inversion of electromagnetic data collected over steel casings: An analysis of two controlled field experiments in Colorado

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Efficient goal-oriented mesh refinement in 3-D finite-element modelling adapted for controlled source electromagnetic surveys

A 3-D forward modelling code, which simulates controlled source electromagnetic problems in frequency domain using edge-based finite elements and a total electric field approach, and a feasibility study for controlled-source electromagnetic measurements across ferrous mineral deposits is conducted.

Electrical imaging of hydraulic fracturing fluid using steel-cased wells and a deep-learning method

The numerical feasibility study results demonstrate that electric surveys using steel casings as LEs have great potentials in real-time monitoring of fracturing fluid flow, and the robustness of the DL approach is tested in the presence of ambient noise and inaccuracies in casing conductivity.

Location-based parameterization of controlled-source electromagnetic data inversion for the monitoring of hydraulic fracturing with magnetically enhanced proppants

The injection of fluids with electromagnetic (EM) contrast is regarded as a promising tool for EM monitoring. We have developed a novel model-based inversion method, designated as a particle mapping



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Including highly conductive steel infrastructure into electromagnetic (EM) earth modeling is motivated by the fact that long metal-cased boreholes have the potential to be used as boosting antennas

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In oil and gas production environments, controlled-source electromagnetics can be used to aid brownfield exploration, development, and reservoir monitoring efforts. However, such environments

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The presence of steel-cased wells and other infrastructure causes a significant change in the electromagnetic fields that has to be taken into consideration in modeling and interpretation of field

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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.

Effect of well casings on surface electrical surveys

Surface electrical surveys are being used as alternative oil exploration tools in both developed and frontier areas. We have examined the resistivity‐IP response of steel oil well casings, which are

Numerical study of long-electrode electric resistivity tomography — Accuracy, sensitivity, and resolution

ABSTRACTElectric resistivity tomography (ERT) is a widespread technique used for geologic and hydrological subsurface characterization. The 3D application is limited to small scales due to the

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As motivation for considering new electromagnetic techniques for hydraulic fracture monitoring, we develop a simple financial model for the net present value offered by geophysical characterization

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ABSTRACTA resurgence of interest in the problem of electrical or electromagnetic scattering from thin conductors, either on a line or in a plane, has been motivated in recent years by time-lapse

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A relatively simple and computationally efficient method of analysis is presented to determine the apparent resistivity error that is caused by the presence of long slender cylindrical conductors embedded vertically into the earth.