Drilling, drilling the main role is?
Geological drilling, census hole diameter of less than 150 mm, exploration hole diameter of 150 to 350 mm, well diameter of 150 to 550 mm, hole depth of 300 meters or more.
Often the cost of drilling in geological prospecting is at least 40%.
Drilling as follows: 1. Geological drilling: from the drill at different depths to obtain the core, ore samples to identify the identification of ore bodies or strata, determine the geological conditions of the operation.
Geological drilling, hydrological wells drilling, engineering survey drilling, oil drilling and so on.
