Geology Basics

Question 1

What are the main rock types involved in subsurface engineering?

Answer 1

Source Rocks: Where oil and gas form (often shale).

Reservoir Rocks: Porous rocks that store oil and gas (like sandstone or limestone).

Cap Rocks: Impermeable rocks that trap hydrocarbons below (often shale).

Question 2

What structural features are important for reservoirs?

Answer 2

Faults (cracks where rocks have moved) and folds (bends in rock layers) are crucial, as they can form traps for hydrocarbons.