vrtalni mulj
vrtalni mulj
a mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole [mešanica gline, kemikalij in vode; ki se črpa po vrtalnem cevovodu, da zaščiti vrtalno rezilo, ga nežno ohlaja, odplakne izrezke ter utrdi stranice vrtine]
Dostopnost
Dostopnost