Words and expressions
1. to consist of – состоять
2. device – устройство
3. pipe – труба
4. Kelly – рабочая труба, квадрат
5. bit – долото
6. swivel – вертлюг
7. include – включать (в себя)
8. drill collar – муфта, труба тяжелого низа
9. drill stem – штанга
10. to sustain – выдерживать
11. to permit – позволять
12. to provide – снабжать, обеспечивать
13. passage way – проход
14. to pump- качать (насосом)
15. drilling fluid – буровой раствор
16. inch – дюйм
17. hose – шланг, гибкая труба
18. top – верх
19. bottom hole – низ забой
20. rotary table – ротор, стол ротора
21. to attach – присоединять
22. hook – крюк
23. bail – серьга
24. to fit – устанавливать, монтировать
25. assembly – узел, агрегат, устройство
I. Read and translate the text
Rotating Equipment
Rotating equipment from top to bottom consists of a device known as swivel, a short piece of pipe called the Kelly, the rotary table, the drill string and the bit.
The assembly of members between the swivel and the bit, including the Kelly, drill pipe and drill collars, is termed the drill stem.
The Swivel
The swivel is truly remarkable because it – (1) sustains the weight of the drill string; (2) permits the string to rotate and (3) provides the passage way for drilling mud to be pumped, down in the inside of the drill stem.
The drilling fluid is under extreme pressure sometimes exceeding - 3000 pounds per square inch (psi). The swivel also has a large bail, which fits inside the hook at the bottom of the traveling block. The rotary hose (Kelly hose) is attached to the side of the swivel. It is through this hose that drilling mud enters the swivel.
The drill string consists of a drill pipe and special heavy walled pipe called drill collars. Drill collars, like drill pipes, are steel tubes through which mud can be pumped. Drill collars are heavier than drill pipes and are used on the bottom part of the string. A length of a drill pipe is about 9 meters long.
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