Rock excavation tools disintegrate and remove the rock from boreholes and tunnels by four basic mechanisms: thermal spalling, fusion and vaporization, mechanical stresses, and chemical reactions, as ...

Lance Astrella, Reginald Wiemers Environmental Equipment Corp. Denver Closed loop systems have become more dependable and efficient, making drilling without a mud pit an economically attractive ...

Rotary steerable, directional-drilling systems increased rate of penetration (ROP) and saved more than 100 days of rig time when used to drill complex 3D wellpaths in the 121/4-in. and 81/2-in. hole ...

Many types and sizes of drilling machines are used in manufacturing. They range in size from a simple bench mounted sensitive drill press to the large multiple-spindle machines able to drive many ...

Oilfield services major Halliburton Co. and Sekal AS said they have delivered the world’s first automated on-bottom drilling system, which integrated Halliburton’s LOGIX automation and remote ...