Global Agency of Geosciences Experts

01-07 Geothermy

Objectives

Understand the basics to properly measure and proccess the geothermal data to generate geothermal energy and convert it efficienlty into electricity

Who should attend

Profesionnals with a Scientific background.

Prerequisites

Background in Geosciences, petroleum geology or basic Petroleum Engineer knowledge

Duration

5 Session

Languages
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1
Session

Concepts and physical Basics

Thermal structure of the Earth Thermodynamic state functions (Gibbs equations, Maxwell relations) Energy budget of the Earth Thermal regime of the Earth, plate tectonics and geothermal systems

Crustal heat transport and relevant rock properties

Heat transport by diffusion (steady state: conduction) and fluid-driven advection Thermal conductivity and diffusivity Specific heat capacity and thermal capacity Radiogenic heat generation rate

2
Session

Measuring geothermal data

Temperature and thermal conductivity Specific heat capacity Radiogenic heat generation rate Porosity and density

3
Session

Processing of geothermal data

Temperature corrections regarding:

Technical perturbations
– Equilibration after borehole shut-in
– Borehole free convection
– Borehole in- and outflow

Natural steady-state and transient effects
– Topography
– Climate change
– Erosion and uplift, sedimentation and subsidence

Calculation of temperature gradient

Calculation of heat flow

4
Session

Geothermal energy (shallow and deep borehole heat exchangers)

Definition of geothermal energy Types of geothermal resources Direct use of geothermal heat  Space heating and cooling   Commercial and industrial applications   Technological and economical aspects of direct use
– Earth coupled heat extraction systems
– Hydrothermal heating systems

5
Session

Geothermal energy (conversion into electric energy)

Geothermal reservoir development Integrating of structural, geological, and geophysical data into a numerical model for simulating flow and heat transport in geothermal reservoirs Step-out exploration and field development Geothermal power generation: Technological and economical aspects of geothermal power
generation
– Natural steam power plants

– Binary power plants

– Power plants for Hot Dry Rock or Enhanced

Geothermal Systems

– Technical, economic and ecological aspects

LECTURERS

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