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foot valve – нижній клапан
leather – волокнистий матеріал зі шкіри
valve – клапан
deviated well – викривлена свердловина
cave-ins – обвали
wellhead – гирло свердловини
wellbore – стовбур свердловини
bore – свердловина
log – колода
crash down – обвалюватися
rock – порода
drill string – бурильна колона
debris – уламки
drilling mud – буровий розчин
circulate out – вимивати
cable-tool drilling – ударно-канатне буріння
rotary drilling – роторне буріння

Exercises

Exercise 1. Answer the questions
1. What is drilling?
2. What is Sichuan Province?
3. What did Chinese coastal people do to produce salt?
4. Is the drill bit made of iron?
5. When and where was the first recorded salt well in China
dug?
6. Who is Benjamin Silliman?
7. What was the record depth for a cable-tool drilling?
8. Natural gas was burned beneath the big salt pans, wasn’t it?
9. What is “Silver Ingot”?
10. Did the rotary rigs becomethe preferred means of drilling
for oil?

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