Tight oil is a type of crude oil that is found in rock formations with low permeability, making it difficult for the oil to flow. This oil is typically extracted using advanced techniques like hydraulic fracturing, or fracking, which involves injecting high-pressure fluid into the rock to create fractures that allow the oil to escape. Tight oil is often located in shale formations, which are sedimentary rocks rich in organic material. The production of tight oil has significantly increased in recent years, particularly in regions like the Permian Basin in the United States. This surge in production has contributed to changes in global oil markets and has made the U.S. one of the leading oil producers in the world. Tight oil plays a crucial role in meeting energy demands and shaping the future of energy resources.