Page 54 - 4637

Exercise 2. Say whether the statements are correct
1. The drill bit is a rotary cutting tool.
2. Oil seeps didn’t provide a balm from injuries.
3. On Russia’s Kola Peninsula, a rotary rig reached more
than 56,000 feet after ten years of drilling.
4. A key technological advance was the introduction of the
“Kang Pen” drum at the end of the 17th century.
5. Annual salt production in Zigong in the 1850s was about
150,000 tons.
6. Rotary drilling uses fluids (drilling mud) to circulate out
the rock as it is chipped away.
7. Sichuan Province, one of China’s poorest regions.
8. The gas industry was a huge economic driver, and many
large cities in Sichuan were established and flourished,because of
the lucrative gas trade.
9. Rotary drilling is most often associated with the
spectacular 1901 Spindletop Hill discovery near Beaumont, Texas.
10. The rig is constructed from bamboo.

Exercise 3. Fill in the gaps
1. Derricks,iron, rig, plank,stem, salt,bedrock,depth, times,
period, regions,bamboo, gas, brine, wells.
2. The salt producing industry was centered in the city of
Zigong, and early photographs show hundreds of producing … ,
salt stove operations.
3. The drill bit is made of… , the pipe… . The … is constructed
from bamboo; one or more men stands on a wooden … , much like a
seesaw, and this lifts up the drill … about 3.3 ft (1 m).
4. … was an essential commodity for preserving food and
extracting it from brine was a simple process.In 1802 in what is
now West Virginia, salt brine drillers David and Joseph Ruffner
took 18-months to drill through 40 feet of … to a total … of 58
feet using a spring pole.

53