Meshing strategies for 3d geo-electromagnetic modeling in the presence of metallic infrastructure

• DOI: 10.1007/s10596-023-10247-w
• Publication Date: 2023-09-08T06:01:31Z
• Authors: Octavio Castillo-...; Paula Rulff; Evan Schankee Um; Adrian Amor-Martin
• Keywords: 3D modeling; Computational model

Abstract In 3D geo-electromagnetic modeling, an adequate discretisation of the modeling domain is crucial to obtain accurate forward responses and reliable inversion results while reducing computational cost. This paper investigates mesh design for subsurface models, including steel-cased wells, which relevant many exploration settings but still remains a numerically challenging task. Applying goal-oriented refinement technique subsequent calculations with high-order edge finite element method, simulations controlled-source electromagnetic models in presence metallic infrastructure are performed. Two test considered, each needing distinct version approximation methods incorporate conductive steel casings included wells. The influence quality, meshing, approximations on problem sizes, cost, accuracy investigated. main insights our work are: (a) applied numerical schemes can mitigate burden artifacts; (b) investigating processes driving meshing embedded infrastructures lead strategies deal such data sets. Based analyses conducted, general recommendations proposed when performing scenarios.