hole drilling
11drilling machinery — equipment used to drill holes in the ground for such activities as prospecting, well sinking (petroleum, natural gas, water, and salt), and scientific explorations. Drilling holes in rock to receive blasting charges is an operation in… …
12Drilling stabilizer — Integral drilling stabilizer with tungsten carbide bricks (TCB) hardfacing A Drilling Stabilizer is a downhole equipment used in the bottom hole assembly (BHA) of a drill string. Its purpose is to mechanically stabilize the BHA in the borehole in …
13drilling mud — noun 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 • Syn: ↑drilling fluid • Hypernyms: ↑lubricant, ↑lubricator,… …
14Drilling — is the process of constructing a mine mostly of a cylindrical form (shot hole, well, mine shaft) by means of rock disintegration at the downhole with spalls removal. Drilling is mainly performed in the Earth crust. There are the following… …
15drilling — drill·ing || drɪlɪŋ n. act of boring a hole; hole that has been drilled drɪl n. tool for drilling holes; practice, training; furrow; seeding machine; row of seeds in a furrow v. bore a hole; practice, train; sow seeds in rows …
16drilling mud — a water based or oil based suspension of clays pumped into an oil well during drilling in order to seal off porous rock layers, equalize the pressure, cool the bit, and flush out the cuttings. Also called drilling fluid. * * * ▪ excavation… …
17Drilling and blasting — Before the advent of tunnel boring machines, drilling and blasting was the only economical way of excavating long tunnels through hard rock, where digging is not possible. Even today, the method is still used in the construction of tunnels, such… …
18Drilling — The act of boring a hole (1) to determine whether minerals are present in commercially recoverable quantities and (2) to accomplish production of the minerals (including drilling to inject fluids). ■ Exploratory. Drilling to locate probable… …
19drilling fluid — noun 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 • Syn: ↑drilling mud • Hypernyms: ↑lubricant, ↑lubricator,… …
20drilling — drill UK US /drɪl/ verb [I] NATURAL RESOURCES ► to make a deep hole in the ground with a special machine in order to look for oil, gas, etc.: drill for sth »The report discussed to what extent foreign companies should be allowed to drill for oil …
