PENGEMBANGAN MODEL PERPINDAHAN PANAS PADA SUMUR PRODUKSI UAP PANAS BUMI

• Main Author: Putra Wardana, Andrian
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/48335
• Institution: Institut Teknologi Bandung

In general, flow modelling in wellbore only takes into account the pressure drop and does not consider the fluid heat loss because it is considered insignificant. However, the fluid heat loss is important to be considered because it can affect the fluid and wellbore characteristics. The temperature of casing and cement can change due to the heat transfer from the hot fluid to the formation caused by the temperature difference of the hot fluid and the formation when the production activities are carried out. The heat of fluid moves to casing, cement, and formation with convection and conduction. The heat transfer model needs to be developed for considering the heat loss in wellbore modelling. In this research, the heat transfer model was developed for steam production well. The steam heat loss and the change of casing and cement temperature with their time of change could be predicted using this model. The amount of steam heat loss was affected by the change of formation temperature. The thickness of the well segment, the initial temperature of casing and cement, the thermal conductivity of the material, and the distance of casing and cement from the heat source affected the change of casing and cement temperature with their time of change. The greater of the formation temperature change, the steam heat loss will be greater. The thicker of the well segment layers and the lower of the initial temperature of casing and cement, the change of casing and cement temperature will be lower, and their time of change will be longer. The higher of the material thermal conductivity and the closer of casing and cement from the heat source, the change of casing and cement temperature will be greater, and their change of time will be faster.