Page 40 - 4924

2. What is the prime power source for any drilling rig?
3. How does the diesel-electric rig work?
4. What are the main elements of hoisting system?

5. What is the purpose of using the drawworks?
6. For what purpose is the friction cathead used?
7. What is the drilling line and its function?

8. What is the length of sheaves?
9. Describe the functions of masts and derricks.
10. Name the main elements of the rotary-table system.

Choose the correct answer.
1. The mechanical equipment used to drive the rig was replaced by:
a) Steam engines;

b) Electric generators;
c) Hydraulic engines;
d) Virtual engines.

2. What do the rig’s engines use as a fuel?
a) Gasoline;
b) Water;
c) Whale oil;
d) Diesel fuel.

3. What ignites the gaseous fuel-air mixture inside the engine?
a) The heat generated by compression;
b) The gas generated by combustion;
c) The oil refined in the process of engine usage;
d) The heat generated by the reeling of the drum.

4. During the 1950s and 60s most rigs were:
a) hydraulic;
b) mechanical;
c) gasoline;
d) eco-friendly.

5. The compound consists of:
a) catshaft and catheads;
b) sprockets and chains;
c) electric brake and auxiliary brake;
d) “sheaves” and chains.

6. What do the powerful diesel engines drive on diesel-electric rigs?
a) large mechanical equipment;
b) large oil and gas machinery;

38