Simulasi Sumur Multilateral Untuk Meningkatkan Produktivitas di Geothermal

Abstract

Multilateral wells have been used to improve exposure of productive zones per well while reducing risk and improving production. It also has the potential to significantly reduce the number of future make-up wells to maintain or increase generation from a geothermal field. This study aims to conduct a wellbore simulation to test the potential of constructing a multilateral well and understand its effect towards the productivity and comparing it to the Base Case single well. The result of this study shows the flowrate by using multilateral well compared to an Base Case single well has increased from 98.73 ton/hr with setting conditions or parameters such as wellhead pressure. It also shows that the thermal capacity is higher when applying multilateral well 70.55 kJ/kg with setting conditions or parameters setting the feed zone location, size and length of casing etc. However other aspect needs to be considered when conducting multilateral completions such as the possibility for potential failure or collapse in the future, additional pressure loss, and potential to create thief zone between the legs of the multilateral well. Thus, continuous well surveillance activities must be done to prevent possible damage or decrease towards production area.