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

Impacts of magnetic permeability on electromagnetic data collected in settings with steel-cased wells

SUMMARY Electromagnetic methods are increasingly being applied in settings with steel infrastructure. These include applications such as monitoring of CO 2 sequestration or even assessing the

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

Modeling and inversion of electromagnetic (EM) data contaminated by steel infrastructure remains a numerically challenging task. In this study, we collected controlled-source EM (CSEM) field data at

Symmetries and configurations of hydraulic fracturing electromagnetic monitoring: a 2D anisotropic approach

A simulation was performed of the electromagnetic fields response to different unconventional reservoir scenarios and transmitter to receiver configuration, including strong anisotropy, combination

A Feasibility Study of CSEM in Geological Advance Forecast with Horizontal Casing Well

With the rapid exploitation of deep mines by digging new tunnels, the advance forecast of water inrush has become increasingly important. The land-based controlled source electromagnetic method

Electromagnetic methods for imaging subsurface injections

The extraction of hydrocarbons from low-permeability formations is commonly achieved through hydraulic fracturing. In a hydraulic fracturing operation, fluid and particles, called proppant (commonly

Observing and modeling the effects of production infrastructure in electromagnetic surveys

Electromagnetic (EM) methods are among the original techniques for subsurface characterization in exploration geophysics because of their particular sensitivity to the earth electrical conductivity,

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.



Transient-electromagnetic finite-difference time-domain earth modeling over steel infrastructure

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

A method of moments approach to modeling the electromagnetic response of multiple steel casings in a layered earth

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

Three-Dimensional Modeling of the Casing Effect in Onshore Controlled-Source Electromagnetic Surveys

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

Modelling Electromagnetic Problems in the Presence of Cased Wells

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.

3D DC resistivity modeling of steel casing for reservoir monitoring using equivalent resistor network

Energized steel casings in oilfields channel electric currents generated for a surface resistivity survey down to the depth of target reservoir, enabling the use of electric methods in reservoir

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

Hydro‐frac monitoring using ground time‐domain electromagnetics

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

Borehole to Surface Electromagnetic Monitoring of Hydraulic Fractures

In this study we present forward modelling of a time-domain electromagnetic borehole-to-surface system for a realistic pad of six horizontal cased wells where the true well trajectory with multiple

Finite-element analysis for model parameters distributed on a hierarchy of geometric simplices

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