Drilling Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
NR | A | Newpark Resources, Inc. | 0.55 | |
SDPI | B | Superior Drilling Products, Inc. | -1.62 | |
CHX | B | ChampionX Corporation | -0.46 |
Related Industries: Oil & Gas Equipment & Services
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
PXJ | A | PowerShares Dynamic Oil Services | 5.63 | |
XES | A | SPDR S&P Oil & Gas Equipment & Services ETF | 5.53 | |
IEZ | A | iShares U.S. Oil Equipment & Services ETF | 4.78 | |
OIH | A | Market Vectors Oil Services ETF | 4.78 | |
MRGR | B | ProShares Merger ETF | 2.49 |
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- Drilling
Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips (swarf) from the hole as it is drilled.
In rock drilling, the hole is usually not made through a circular cutting motion, though the bit is usually rotated. Instead, the hole is usually made by hammering a drill bit into the hole with quickly repeated short movements. The hammering action can be performed from outside the hole (top-hammer drill) or within the hole (down-the-hole drill, DTH). Drills used for horizontal drilling are called drifter drills.
In rare cases, specially-shaped bits are used to cut holes of non-circular cross-section; a square cross-section is possible.
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