oil reservoirs

An oil reservoir is a natural underground rock formation that stores significant amounts of crude oil and natural gas. These reservoirs are often porous rocks like sandstone or limestone, which have tiny spaces that trap hydrocarbons. Over millions of years, organic material decayed and transformed into oil, which migrated and accumulated in these porous rocks, capped by non-porous layers that prevent the oil from escaping. Engineers locate, drill into, and extract the oil from reservoirs, which are vital sources of energy globally. Understanding reservoir properties ensures efficient extraction while managing environmental and economic impacts.