Читайте также:
|
| 1. | A. the ability to flow through interconnected pores |
| 2. | B. sorting |
| 3. | C. a fluid flow equation |
| 4. | D. a single fluid |
| 5. | E. matrix permeability |
| 6. | F. to grow |
| 7. | G. movement |
| 8. | H. “tight” reservoirs |
| 9. | I. a rock formed from material derived from pre-existing rocks by the accumulation and cementation of mineral grains transported by wind, water, or ice to the site of deposition or by chemical precipitation at the depositional site |
| 10. | J. a medium – grained clastic rock formed from sand on a beach, in a river bed or in a desert |
| 11. | K. chemical compound formed only of carbon and hydrogen |
| 12. | L. the difference in pressure between two immiscible fluids across a curved interface at equilibrium |
| 13. | M. induced porosity |
| 14. | N. hardening |
Match the word phrases in the left column with the word phrases in the right. Find them in the text and write these sentences out. Give Russian equivalent to the English ones.
| 1. a fluid flow 2. the degree 3. the ratio 4. large and flat 5. reservoirs 6. the location 7. both permeability and porosity | A. grains uniformly arranged B. of effective permeability C. are called anisotropic D. of sedimentary rocks E. equation F. of the cementing material within the pore space. G. of consolidation and cementation |
21.Fill in the gaps with the missing words.
A (1)________ rock must have the ability to allow (2)_______ fluids to flow through its interconnected (3)________. Permeability is affected by the type of (4)________ present, especially where fresh (5)________ is present. Petroleum reservoirs can have (6)________ permeability, which is also known as the (7)________ permeability and (8)________ permeability. Whereas, compaction and cementation generally (9)________ the primary permeability; fracturing and solution tend to (10)_______. Reservoirs having permeability below 1mD are considered (11)________. The factors affecting the (12)________ of permeability in sediments are: shape andsize of sand grains,(13)________, fracturing and (14)________.
Answer the following questions.
1. What is permeability affected by?
2. Why has a fluid flow equation become one of the standard mathematical tools of the petroleum engineer?
3. If the porous rock is 100% saturated with a single fluid (phase), such as water, oil or gas, what term is used related to permeability?
4. Why is permeability called effective?
5. What is the result of fluid interference with each other?
6. Could you define the term “relative permeability”?
7. When did matrix permeability originate?
8. Why is primary permeability reduced?
9. What does secondary permeability provide?
10 Where are low permeability values generally found?
11. Are there any factors that affect the magnitude of permeability in sediments?
Дата добавления: 2015-09-10; просмотров: 98 | Поможем написать вашу работу | Нарушение авторских прав |