Abstract Geothermal energy is a renewable energy source that is reliable, sustainable, and creates little pollution while producing baseload power. In geothermal wells, the drilling method and heat transfer management are responsible for determining the energy efficiency and profitability of the wells. The drilling of geothermal wells is a challenging endeavour because of the high temperatures, the stiff rock formations, the caustic fluids, and the complex subsurface conditions. The amount of energy that is produced by the system is affected by the heat transfer that occurs between the surface facilities and the geothermal reservoir. An examination of contemporary geothermal drilling techniques and heat transfer systems is presented in this article. Efficiency in energy extraction is improved, and costs are reduced, as a result of innovations in drilling, materials, well design, thermal modelling, and drilling techniques. The purpose of this essay is to investigate the ways in which architecture influences the effectiveness of heat exchange and drilling techniques. Well productivity and longevity have been increased as a result of innovations like as directional drilling, new drilling fluids, improved geothermal systems (EGS), and improved casing materials. For the purpose of maximising heat extraction, it is necessary to have accurate thermal models and flow control. Detailed drilling techniques and efficient heat transfer systems are required, according to the findings of the study, in order to successfully apply geothermal energy on a global scale.