Hydraulic fracturing, also known as fracking, allows the recovery hydrocarbons from unconventional sources, such as reserves located in low permeability formations (e.g. shale, tight sand). The extraction of oil or natural gas from unconventional sources can be achieved with the injection of a highly pressurised fluid-and-proppant mixture that will form fractures in the ground. These fractures are kept open with the help of a proppant, such as sand, to allow the hydrocarbons to flow in the well and be pumped out of the ground.
Hydraulic fracturing is a highly debated topic, and some concerns exist about the possible injection of chemicals into the ground, and the nature of those chemicals. Understanding the role of chemicals used in hydraulic fracturing activities and the applicable regulatory frameworks is important to address those concerns.
This white paper provides an overview of chemicals used in hydraulic fracturing, followed by a description of the regulatory framework relevant to the use and disclosure of chemicals for hydraulic fracturing in Europe and in the USA.