Frac services, or hydraulic fracturing services, refer to the process and technologies used to enhance oil and gas production from underground reservoirs, particularly in unconventional formations such as shale. The method involves injecting high-pressure fluid typically a mixture of water, sand, and chemicals into rock formations to create fractures, allowing hydrocarbons to flow more freely to the wellbore. These services include everything from fluid design and pumping to monitoring and post-fracturing analysis, and are critical in unlocking resources in tight oil, shale gas, and other low-permeability formations.