San Jose. Judging by its exterior, the capital city of Costa Rica, San Jose, josÃ© is merely an ugly conglomerate of outdated commercial buildings and decrepitâinfrastructure potholed streets and crumbling sidewalks that wind without reason through a mishmash of seemingly thrown. together corrugated metal and. plasteran Jose. Judging by its exterior, the capital city of Costa Rica, San Jose, josÃ© is merely an ugly conglomerate of outdated commercial buildings and decrepitâinfrastructure potholed streets and crumbling sidewalks that wind without reason through a mishmash of seemingly thrown. together corrugated metal and. plaster
The average height of a normal drilling rig is about 125ft, which is equivalent to a 10 or 11 storey building or around two-fifths the size of the clock tower of Big Ben. If a well needs it, the next stage of testing is the perforation and hydraulic fracturing (fracking) of the well to release the shale gas.
Larger rigs are capable of drilling through thousands of metres of the Earth 's crust, using large  mud pumps  to circulate drilling mud (slurry) through the drill bit and up the casing annulus, for cooling and removing the cuttings while a well is drilled. Hoists in the rig can lift hundreds of tons of pipe.