Conventional Methods of Geothermal Exploration

Abstract

Geothermal energy, as a reliable and sustainable source of renewable energy, makes use of the Earth’s natural heat that is largely continuous under the surface, as opposed to solar or wind energy, which are intermittent and reliant on the weather. In recent times, this source of energy has served as the mainstay of some nations’ energy industry. However, the biggest risk in developing geothermal energy is resource overestimation, especially in the exploration phase when a deep well has not constructed yet. The problem of overestimation of geothermal energy can be solved by using conventional methods that provide accurate data about the resource. Therefore, geothermal exploration must be undertaken using a reliable method. This paper presents a study on the conventional methods of geothermal exploration. The study aimed to identify and analyze the conventional methods used for exploring geothermal energy. Secondary data were used for the study and were collected from textbooks, journals, reviews, bulletins, and reports on geothermal exploration. The findings of the study revealed that the conventional methods of geothermal exploration include geothermal exploration surveys (geological survey, geochemical survey, and geophysical survey), deep exploration drilling, and estimation methods. The study also revealed that the choice of a conventional method of geothermal exploration is based on the type of resource and application, and available funds. It was urged that the stakeholders of geothermal energy projects should understand the conventional methods in order to choose the best method for their geothermal exploration and avoid overestimation of resources.