2D structural and thermal models in southeastern Norway based on the recently drilled Årvollskogen borehole and 2D density, magnetic and thermal modelling

Abstract

Background: We have made an attempt to understand the main mechanism which controls the conductive heat transfer in the Årvollskogen borehole. This has been done in order to determine the 2D subsurface temperature distribution within the deep-seated crystalline rocks and, therefore, to estimate the geothermal potential in the Moss area near Oslo.

The Cornubian geothermal province: heat production and flow in SW England: estimates from boreholes and airborne gamma-ray measurements

“…Equation (1) has been used extensively in the geothermal literature (e.g. Maystrenko et al 2014) and is used here to (i) provide our final (revised) estimates of heat production from the airborne data and taking into account rock densities. It is also worth noting that heat production formulae, not requiring specific use of the rock density, have also been applied in the geophysical literature (Jessop 1990;Brady et al 2006).…”

“…Supplementary geological and geophysical information is then incorporated to aid the assessment. Aeromagnetic data have been used in geothermal investigations to estimate basal depths of the Curie point magnetic layer (Abraham et al 2014) and to assess concealed structure (Maystrenko et al 2014). Baillieux et al (2014) report on the use of gravity pseudotomography to study the behaviour of density contrasts, related to increased fracture porosity, at depth.…”