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Кубышко - нефте-газо

IV. Fill in the gaps

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

rock formations.

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

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

methods.

  1. … has become a primary exploration tool.

  2. Gravity surveys are usually carried out from ….