Pertamina Geothermal Energy Drilling Campaign 2014 - 2018

Abstract

After a series of successful drilling campaign between 2007 and 2014, Pertamina Geothermal Energy (PGE) has continued to drill 97 more wells until end of 2018 to support the development and exploration phase of geothermal energy throughout 9 working areas. Various challenges has been mapped and defined, corresponded with the escalation of average Total Depth of the wells around 3,000 meters. Thus, several improvement has been carried out to achieve the good drilling performance based on ROWC (rate of well completion) and GDUC (geothermal drilling unit cost). Another milestones such as Long String Cement, PDC bit and Casing Drive System which has been implemented recently shows a significant impact to resolve some of specific challenges faced by the drilling department in PGE. Those improvements are covered not only for engineering design and proper drilling practices but also comprise the contract scheme for services and materials.