This Practice Note introduces the sale and trading of crude oil and natural gas, following the production of the same under a Joint Operating Agreement (JOA). Written in partnership with Rebecca Downes (Senior Associate) and Matthew Stott (Managing Associate) at Orrick, Herrington & Sutcliffe (UK) LLP, it covers physical and non-physical (or virtual) sales and trading of crude oil, natural gas and liquefied natural gas (LNG), including a look at key terms and commonly used standard form agreements.