| Title | Drill Bits Selection Analysis in Non-Consignment Procurement Arrangement in Geothermal Drilling Project |
|---|---|
| Authors | R. Kusumawardani, D. Alamsyah, P. Asaari, A. Burnama, K.D. Yasa |
| Year | 2020 |
| Conference | New Zealand Geothermal Workshop |
| Keywords | drill bits, drilling procurement, geothermal drilling |
| Abstract | The drill bit is one of the most important tools in geothermal drilling operations. The main role of this tool is to crush or cut the rock. Unfortunately, the selection of the best available bit for a job can be determined only by trial and error. This is because bit selection refers to several factors, such as the formations and drilling parameters. In non-consignment procurement arrangements, drill bit selection shall be completed prior to the execution. This paper explores the selection workflow and assumptions used in selecting drill bits for geothermal operation based on offset well and recent market reviews. Discussion covers drilling bit specifications and quantity determination for 3 wells in a drilling campaign. The results are recommendations for preferred drill bit selection in non- consignment procurement arrangement. Important data that must be recorded during drilling is also mentioned in the discussion. This is critical for drill bit selection optimization in future campaigns. |