Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
fundamentals of oil & gas engineering.doc
Скачиваний:
10
Добавлен:
07.05.2019
Размер:
553.98 Кб
Скачать

4. Give the adequate Russian variants for the following word combinations:

To classify rocks on the basis of their drillability; the rate at which the tool penetrates into the rock; the straightness of the hole; to describe drillabil­ity by stating the compressive strength or hardness; a sophisticated method for calculating the DRI and BWI; on the one hand ... , on the other hand; to produce heavy wear on the bit; despite relati­vely good drillability; to exert great influence on wear; to have a great deal to do with the success of the drilling operations.

5. Find the English equivalents for the following words and word combinations:

Прогнозировать продуктивность скважины и износ инструмента; проникать в горную породу; зависеть от абразивности горной породы; быть достаточным для приближенного вычисления; подсчет коэффициента скорости бурения и индекса износа долота; вызывать большой износ долота; помощь геологов-нефтяников; соседние скважины.

6. Find the antonyms:

  • Directly proportional

  • Exact method

  • Hole deviation

  • Hardness, strength

  • To lack, to be deficient

  • Little wear

  • The presence of soft minerals

  • Failure of the drilling operations

7. Agree or disagree with the following statements:

  1. Many attempts have been made to classify rocks on the basis of their abrasiveness.

  2. Various measuring methods have been evolved to predict productivity and tool wear.

  3. The term "drillability" is used here to mean only the rate at which the tool penetrates into the rock.

  4. The mineral composition, the grain size and the brittleness determine the drillability of a given rock.

  5. Crude methods such as describing drillabil­ity by stating the compressive strength or hardness can suffice for rough calculations.

  6. The higher the DRI, the lower penetration rate.

  7. The BWI and the DRI are directly proportional to each other.

  8. The presence of hard minerals may produce heavy wear on the bit despite relati­vely good drillability.

  9. The nature of a formation doesn’t affect the success of the drilling operations.

8. Answer the questions:

  1. What is the aim of various measuring methods?

  2. What does the term “drillability” mean in wide sense?

  3. What is tool wear proportional to?

  4. What factors is drillability of a rock determined by?

  5. What crude methods of describing drillability do you know?

  6. What does DRI stand for? What does it describe?

  7. What does BWI stand for? What indication does it give?

  8. How are these indexes interrelated?

  9. Where can a driller get valuable information regarding the formation he is drilling?

9. Summarize the information of the text and tell about interrelation between bit wear and rock drillability.

10. Find as many words connected with rocks and their properties as possible

I

G

N

E

O

U

S

P

F

F

L

Y

N

R

W

E

A

T

H

E

R

I

N

G

C

A

V

X

P

D

A

N

A

S

I

R

L

V

E

T

R

R

L

E

C

S

F

A

I

E

I

R

E

I

E

T

T

U

L

I

N

L

N

U

S

L

Y

R

U

R

U

N

E

A

R

S

S

L

R

A

R

E

I

W

D

I

G

I

U

B

I

T

E

L

D

E

E

R

A

V

R

O

R

E

O

I

L

L

C

A

S

E

E

V

A

R

Y

C

E

L

A

P

A

R

T

I

C

L

E

M

U

D

Y

C

O

N

S

O

L

I

D

A

T

E

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]