| Title | GEOTHERMAL WELL CONTROL EQUIPMENT APPLICATION FOR MINING DRILLING IN GEOTHERMAL ENVIRONMENT |
|---|---|
| Authors | D.C. Irwansyah, G. Rifki, V. Agustino, D. Adityatama and H.W. Wiharlan |
| Year | 2021 |
| Conference | New Zealand Geothermal Workshop |
| Keywords | Well Control, Well Control Equipment, BOP, Kick, Geothermal Drilling, Mining Drilling |
| Abstract | One of the considerations during the planning of geothermal drilling is the selection of the well control equipment or Blowout Preventer (BOP). The BOP is used to shut in the well when the first barrier of the drilling operation, drilling mud, cannot withstand the well pressure. The pressure of the well itself originates from the Boiling Pressure Depth (BPD) profile which is controlled by the well temperature. Thus, all drilling operations inside the geothermal environment, including mining drilling, have the same risk on the well control side. Normally, well control equipment is not required in mineral/mining drilling exploration. But for some mineral coring operation that intersect a geothermal area, high temperature of water/steam and/or gases could be encountered during the drilling operation. In order to safely conduct drilling, we need to consider the use of well control equipment for mineral/mining drilling operations in geothermal areas. This paper will describe the assessment of well control equipment that is commonly used in geothermal drilling for mining drilling operations in a geothermal environment. The assessment will discuss the well design configuration, BOP stack configuration and BOP operation appropriate for the mining drilling equipment (drilling rig and BHA). |