Comprehension tasks

I. Translate into Russian

Original well, seepage of crude oil, reliable indicators, accurate way, presence or absence, tarlike deposits, natural gas, geochemical prospecting methods, folds and faults, sound waves, exploration tool, sensitive instrument.

II. Match the part of the word combination

1. original a) methods

2. surface b) formations

3. petroleum c) well

4. exploration d) surface

5. underground e) rocks

6. ground f) seepage

7. subsurface g) pattern

8. experienced h) meter

9. gravity i) seismologist

10. grid g) potential

III. Study the definitions

Petroleum – A fuel found in mineral deposits under the ground. Petr – comes from the Greek word for rock. Oleum from the Greek word for oil – therefore, rock oil, or oil found in rock.

Crude Oil – Oil or petroleum as it comes from the ground. It is not commercially usable in this from.

Bulge – Place where a swelling or curve shows; temporary increase in volume or numbers.

Seismologist – Scientist studing earthquakes.

IV. Fill in the gaps

1. The new methods were devised for … the petroleum potential of underground

rock formations.

2. Exploration methods can only indicate … of underground formations.

3. Seismic methods involve … of rock in a manner similar to underwater sonar

methods.

4. … has become a primary exploration tool.

5. Gravity surveys are usually carried out from ….

V. Translate into English

Природная скважина, просачивание сырой нефти, основные методы исследования, месторождения, скопление природного газа, поверхность земли, картография, различные расстояния и направления, чувствительный инструмент, места скопления относительно близко к поверхности, сейсмическая работа.

VI. Answer the questions

1. Why were the new methods for exploring the petroleum potential devised?

2. What are the three major exploration methods?

3. Is there an accurate way to predict the actual presence of under ground petroleum deposits?

4. What can the exploration methods do?

5. How can the natural gas concentration be detected?

6. What is the idea of surface method?

7. What do seismic methods involve?

8. What is the gravity meter and what is the idea of gravity meter surveys?

VII. Make up questions to the given answers

1. There are three major exploration methods.

2. A seepage of crude oil sometimes appears as a tarlike deposit in a low area.

3. The presence of underground salt domes may be indicated by a low bulge in an

otherwise flat ground surface.

4. Most folds and faults in subsurface rocks are not apparent at the ground surface.

5. Gravity surveys are usually carried from the air.