Show mud for wells too the mud in which small children like to play is a very important factor in oil well drilling although it may contain more than just alit an oil OR well drill bit no matter how tough the steel would quickly wear out if it it were to try to bore unaided through heavy rock formations so behind the derrick Is a pit full of mud it may be thin or it may be thick it may contain clay pulverized leather soda cornstarch or saw dust but to the driller it is mud A pump tureen furcel it under pressure into a connection that takes the mud to the drill bit at the bottom of the hole being drilled it leaves the drill bead head through jets behind the cutters on the bit and the mud jets spurting out with tremendous force and at speeds up to feet per second lubricate and ando 0 cool the bit the pressure forces mud and cuttings upward between the outside of the drill pipe and the walls of the hole and out at the top where the cuttings are screened out and the mud |