The drill string went into a thick entrainment of mud by water.
2.
The topdrive, which spins the drill string, has acted up twice.
3.
Drill pipe is a portion of the overall drill string.
4.
If a blowout begins, the drill string is stopped.
5.
Then wrenches are used to manually close the rams around the drill string to seal the wellbore.
6.
"' Pipe recovery "'is a specific oil and gas industry, when the drill string becomes stuck downhole.
7.
To "'make a connection "'is to add another segment of drill pipe onto the top the drill string.
8.
The company's products include blowout preventers, control systems, riser string packages, choke valves, riser tensioners, and drill string compensators.
9.
The nearly two-mile-long drill string was equipped with a 14 3 / 4-inch drill bit and 10-inch drill collars.
10.
An annular-type blowout preventer can close around the drill string, casing or a non-cylindrical object, such as the kelly.
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