The process of cutting a borehole in the ground for the purpose of:
| 1 | Exploration of hydrocarbon deposits and aquifers | belongs to the category of Exploration drilling |
| 2 | Production of hydrocarbon and water from subsurface reservoir | belongs to the category of Production drilling |
| 3 | Injection of a fluid from surface to a subsurface reservoir | belongs to the category of Production drilling |
| 4 | Surveillance of subsurface reservoir | belongs to the category of Monitoring drilling |
Petroleum Upstream differentiates three categories of well drilling, which differ in purposes, drilling procedure, data acquisition package and completion specifics:
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Drilling Engineering