[Oil Production Geology Prize-winning Questions and Answers] 4

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16. The overlying layer above the ancient buried hill is the ( ) layer, and the ancient buried hill formed a trap for storing oil and gas. (A) Sandstone (B) Denudation surface (C) Permeability (D) Non-permeability 17. Due to the different weathering resistance of the rocks exposed on the surface, the rocks with strong weathering resistance formed undulating residual hills on the ancient terrain. ； Rocks with weak resistance to weathering are eroded into depressions by weathering. The ancient buried hills formed by the burial of these residual hilltops are called ( ) type ancient buried hills. (A) Residual hill (B) Erosion residual hill (C) Erosion (D) Tectonic movement 18. If the moving oil and natural gas encounters an obstruction that prevents its continued migration, it will stop moving and gather near the obstruction to form ( ). (A) Oil and gas field (B) Shantou gas reservoir (C) Trap (D) Oil storage structure 19. A geological body that can prevent the continued migration of oil and gas and allow oil and gas to accumulate to form an oil and gas reservoir is called (). (A) Oil and gas field (B) Barrier (C) Trap (D) Oil storage structure 20. Rock formations that can store oil and gas and in which oil and gas can flow are called ( ). (A) Oil and gas field (B) Reservoir (C) Trap (D) Oil storage structure