Question

Distribution of petroleum in india

Answer 1

All sedimentary rocks do not contain oil.

An oil reservoir must have three prerequisite conditions.

Porosity [tiny gaps in soil] so as to accommodate sufficiently large amounts of oil;

permeability [allowing liquids or gases to pass through it.] to discharge oil and/or gas when well has been drilled;

the porous sandstone beds or fissured limestone containing oil should be capped below by impervious beds [not allowing fluid to pass through].

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