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54. Fill in the gaps with the words derived from those at the end of each line.

1. A gas-water or gas-oil interface may be detected as a ……….. flat reflection amongst arched reflections

NOTICE

2……… files of subsurface formation can be transferred directly from the interpreter's workstation to mapping software.

DIGITIZE

3. Multiple is a repeat propagation of energy within the ……. .

REFLECT

4. New techniques of data compression …….. the transmission of the raw seismic records from the …….. vessel to the shore for immediate processing.

ABLE

ACQUIRE

5. I would not trust him because he is hardly a ………. person.

RELY

6. The cost of drilling on a large scale can be high …….. the cost of using geophysics.

RELATE

7. Map represents a …….. image of the subsurface structure.

DIMENSION

8. Virtual Reality rooms are recent development in the field of …………….. .

VISUALIZE

9. The …………. of the signal greatly depends on the atmospheric conditions

TRANSMIT

  1. Complete the sentences based on the information from the text.

  1. Latest advancements in computing capacity allow to …………….. .

  2. The greatly improved seismic resolution of 3D seismic imaging makes it possible to …………………………….. .

  3. In the past the processing of the recordings from a 3D survey ………..

  4. By using multiple seismic vessels we can record 3 D seismic data ……………………………. .

  5. Specially designed survey vessels deploying up to ten multiple streamers at a time ……………………………

  6. The design of paravanes reduces …………………………………

  7. Modern streamers have multiple

  8. New techniques of data compression help to ………………………….

  1. Complete the table and describe the latest developments in seismic survey.)

Developments

Significance

migration before stack

multiple vessels

…….

…….

  1. Answer the questions.

  1. What can you tell about 3D seismic images?

  2. How can different types of maps help in identification of rock types?

  3. Why are computer stations an essential tool for interpretation?

  4. What are the results of an increase in computing capacity?

  5. What technique made it possible to cut the acquisition time in 3D surveys?

  6. What other developments are there in seismic survey?

  7. What possibilities did improved resolution and reduced acquisition/processing times open for surveys?

  8. What is 4D seismic survey?

  9. What is the importance of 4D seismic survey? What does it allow to do?

  10. What further advancement does 4D survey make possible?

  11. What recent development is there in visualization?

  12. What are the advantages of this innovation?

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