The Influence of Porosity and Flow Rate in an Aquifer on its Temperature Distribution: A mathematical model

Geothermal energy can be promising to help the energy transition. Warm water is pumped up from a geothermal well and after it is cooled down, the cold water is reinjected into the hot aquifer underground. The temperature change could cause chemical balances to be disturbed and result in precipitation on the porous medium of the aquifer. This...

Investigation of the chatter and squeal phenomenon in bicycle disc brakes

Bicycle disc brake noise and vibration, which usually falls in the frequency range of 0-2 kHz, is a principal braking quality attribute that has started to attract significant interest from bicycle manufacturers. Brake noise is an irritant to their customers, who see it as a symptom of a defective brake and that leads to unnecessary warranty...

Dispersion and Heat Conduction in a Simplified Geothermal Doublet

The goal of this study is to test out the accuracy of the upscaling approach (Jinyu Tang, 2021) for a geothermal doublet. This approach tries to simulate the physical thermal dispersion. When modeling in a geothermal reservoir it would be easy if a lot of layers can be upscaled. However, when doing upscaling one can not just take an average of...

The Thermal Interference Effect of Neighbouring Geothermal License Areas: a Parameter Modelling Study

In a future scenario, the successful development of geothermal industry will result in the large-scale deployment of new deep geothermal projects. In highly populated areas, such as the Netherlands, such a development will lead to a dense grid of neighbouring licenses. In such a situation a new project requires careful design and planning as the...

Proxy-model for Flow and Transport in Geothermal Reservoirs

The hot water produced from a geothermal doublet possesses energy, which once utilized, the water cools down and is re-introduced back into the same reservoir at a sufficient distance using an injector well. As cold water flows through the reservoir, it acquires thermal energy from surrounding in-situ rocks. This process recurs until a...

Injectivity reduction in geothermal wells: Investigating the causes

This study investigated the three possible main causes of injectivity reduction in geothermal wells (suspended solids, scaling, biological activity). That has been done by obtaining water samples at three operating geothermal doublet locations in the Netherlands. This paper contains new geothermal data and the interpretation of them. At the...

Geothermal Aquifer Architecture Model of Alblasserdam Member in Drechtsteden, the Netherlands

The decrease in the production of hydrocarbons in combination with a growing urgency to reduce carbon emissions drives a rapid study and application of geothermal energy in the Netherlands. The produced heat from the low enthalpy geothermal energy can be used for heating up the buildings and greenhouses. A doublet system is used in the...

Breakthrough time of a geothermal reservoir: Estimating the impact of well spacing, reservoir and operational inputs on the breakthrough time of a geothermal doublet

This research identifies and provides a relative ranking of the parameters that control the thermal breakthrough time of a geothermal doublet. The ranking is based on simulations modelled by a three-dimensional model build in COMSOL Multiphysics with a simulation duration of 50 years. The model is a nonisothermal, isotropic, cuboid consisting of...

Doublet Spacing in the “Delft Aardwarmte Project”

In the “Delft Aardwarmte Project” cooled geothermal water is planned to be injected back into the producing formation. This paper describes the mechanisms occurring during injection and he prediction of the thermal breakthrough that are studied using a reservoir simulation model developed for the “Delft Aardwarmte Project” field properties....