Perpustakaan Digital ITB

Slimhole monobore completion techniques are gaining popularity among operators as a cost-effective and operational alternative. Merging these strategies into a single completion approach could provide significant operational benefits because of their impact on different phases of well operation. A comparative study between slimhole monobore and conventional well design and operation will be conducted to estimate the most optimal scenario to be implemented in mature offshore field in Indonesia. The decisive parameters for the design are operation costs, durations and technical feasibility. It is found that the slimhole monobore design with 4-1/2-in. cemented tubing will significantly reduce the drilling cost for about 20 – 40% and duration rather than usual completion using 3 1/2-in. tubing and 7-in. liner. But regardless, there are some issues and limitations that need to be managed regarding future intervention of artificial lift selection and installation. This study not only summarizes an extensive study of monobore well design and its potential to be implemented widely in Indonesia but also serves considerations to implement it.