Schramm T130 Drilling Rig View Rig Specs Schramm T200XD Drilling Rig View Rig Specs Challenger 360 Drilling Rig View Rig Specs Atlas Copco TH60 Top Drive Drilling Rig View Rig Specs Challenger 230 Drilling Rig View Rig Specs Challenger 280 Drilling Rig View Rig Specs Challenger 320 Drilling Rig View Rig Specs Gefco SS-50K Top Head Drilling Rig View Rig Specs Midway 2500 Drilling Rig View Rig Specs Midway 3500 Drilling Rig View Rig Specs Walker-Neer 2500 Drilling Rig View Rig Specs Gefco JED Drilling Rig View Rig Specs