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.
Surveying can mean several different things as it relates to the oil and gas industry. When discussing oilfield surveying, this usually refers to checking and creating the legal boundary for drilling operations. Surveyors will use a variety of techniques including GPS systems, hand tools, and sketches to create such boundaries. Surveyors may also be responsible for checking ownership of properties, and registering any updates with the proper legal authorities. Surveyors typically spend most of their time in the field and will travel extensively for these positions.