Question

) When petroleum and natural gas are extracted through the rock layers, natural gas is found to be present above the oil. Why is it so?

Answer 1

Answer:

Natural gas is found above petroleum, trapped between the rock cap & petroleum layer. ... When the pressure of gas subsides, petroleum starts flowing out due to the pressure of natural gas. Natural gas is so lighter than the petroleum so we can see that always natural gas find above the petroleum.

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