Fist(noun) the hand with the fingers doubled into the palm; the closed hand, especially as clinched tightly for the purpose of striking a blow. Fist(noun) the talons of a bird of prey. Fist(noun) the index mark [/], used to direct special attention to the passage which follows. Fist(verb) to strike with the fist.
A good used workover rig (single) including rig tank, rig pump, doghouse, and rig tongs can be had for around $1 Million. A good new work over rig (single) including all the aforementioned stuff is ~$3 Million. I don't know how much more a double or triple would be, but I'm guessing in that same ballpark. A new drilling rig is in the $10 Million range, although you can get used ones for far cheaper.
WTI Crude Oil Prices - 10 Year Daily Chart. Interactive chart showing the daily closing price for West Texas Intermediate (NYMEX) Crude Oil over the last 10 years. The prices shown are in U.S. dollars. The current price of WTI crude oil as of April 20, 2017 is $50.38 per barrel. Crude Oil Prices - 70 Year Historical Chart.