The largest oil and natural gas producer in the EU, the United Kingdom retains proven crude oil reserves of around 4 billion barrels and proven natural gas reserves of some 18.8 Tcf as of 2006. Containing the bulk of domestic reserves and an extensive network of subsea pipelines and infrastructure, the UK Continental Shelf (UKCS) is the most active offshore region for the UK's oil and gas sector, and industry giants Shell, ExxonMobil, Chevron and Total all explore and produce there. The third largest global energy company and headquartered in the UK, BP is operator of such major offshore UK producers as the Foinaven and Forties fields.
Chemical engineers apply the principles of chemistry to help convert raw materials into useful products. They deal with the design, construction, maintenance and operation of plants and equipment to carry out these procedures. In the oil and gas industry, chemical engineers work to help refine crude oil into useable products such as gasoline and lubricants, and they are also heavily involved in chemical plants and manufacturing operations. Some positions that would require a chemical engineer include process engineer, corrosion engineer and petrochemical engineer, among others.