Tight oil is a type of crude oil found in rock formations with low permeability, making it difficult for the oil to flow. It is typically extracted using advanced techniques like hydraulic fracturing and horizontal drilling, which help to release the oil trapped in these dense rocks. This resource has become increasingly important in the energy market due to its abundance in places like the United States. The rise of tight oil production has significantly impacted global oil supply and prices. As companies invest in technology to access these reserves, tight oil has contributed to the U.S. becoming one of the world's leading oil producers, reshaping the dynamics of the energy industry.