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1. Read the text “Power system” and fill in the missing words from the box. There is one extra word. Power system

Without 1. power nothing on a rig operates. Machinery must have an energy source to make it go. On virtually every drilling rig, the power comes from internal-combustion engines, which are called prime movers. Further, they often use diesel 2. . Because of the way diesel engines operate, they deliver more turning force, or torque, than gasoline engines. As a result, many industries, including the 3. _ industry, use diesels.

A 4. may need from two to four prime movers, depending on its size. The bigger the rig, the deeper it can drill and the more power it needs. Thus, big rigs have three or four prime movers. Together, they develop 4,500 horsepower (about 3,300 kilowatts) or more. In comparison, a powerful car engine may put out only 300 horsepower (220 kilowatts) or so; most develop even less.

This power must 5. to the rig's components to make them work. For example, at the same time as the rotary table needs power to turn the bit, the mud pump needs power to 6. drilling mud. What is more, to provide maximum power to a component, the 7. must also be able to combine the power of two or more engines. Two common methods transfer power on today's rigs and allow the driller to combine engine power: mechanical transmission and electrical transmission.

transfer; mix; drilling; fuelt; circulate; driller; rig; power

(Baker R. “A Primer of Oil Well Drilling”, 2001, Austin, Texas)

2. Define whether the following sentences are true (t) or false (f).

T / F

1. Diesel engines are used in drilling industry mainly because of its operation regime.

T / F

2. In fact, power is generated by in­ternal-combustion engines almost on all drilling rigs.

T / F

3. The rig height is in proportion to well depth.

T / F

4. There are two main ways of power transmission.

T / F

5. As a rule, big rigs have three prime movers.

3. Lab. Assignment:”Power Systems and Instrumentations”. Terms and Vocabulary

automatic cathead

автоматическая шпилевая катушка

auxiliary

вспомогательный, дополнительный

brake

тормоз

cathead

шпилевая катушка

catline

канат для работ со шпилевой катушкой

clutch

муфта

console

пульт управления

fast line

ходовой конец (талевого каната)

friction cathead

фрикционная шпилевая катушка

makeup cathead,

breakout cathead

шпилевая катушка для свинчивания бурильных труб

reeve

оснащать (талевую систему), продевать канат (через блок), надевать (на шкив)

shaft

вал, ось, шток

sheave

шкив; блок; ролик, каротажный ролик, колесо с желобчатым ободом

slip

скольжение, травить канат

spool

шпулька, бобина

winch

лебедка

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