Analysis of Risk Factors Nonproductive Time on Geothermal Drilling in Indonesia

摘要

This research analyzes nonproductive time (NPT) in geothermal drilling operations. In geothermal drilling operations, NPT can be caused by several factors, such as decision making factors, operational planning factors, geological factors, and equipment failure factors. This study was conducted in the three wells geothermal project at MKD location in Indonesia. Each operation and activity that causes nonproductive and down time rig will be recorded and counted as NPT. The data then be identified as the cause of NPT in drilling operations whether caused by decision making factors, operational planning factors, geological factors, or caused by failure factors of rig equipment. Analysis in this study used excel and montecarlo, and the results of the analysis get a comparison of the time between operation and NPT, probability of the factors causing NPT and the probability of the risk level of each factor causing nonproductive time. The results of the analysis will be used as a reference in risk mitigation in geothermal well drilling.