Meeting production targets is a continuous challenge, and many components of a field operation have the capacity to significantly impact the economic success of an asset. Fast and easy access to reliable information is critical to enable engineers and management to make the right decisions at the right time to meet both operational and longer-term strategic objectives. This is the case whether onshore or offshore and in conventional or unconventional fields. IOCs and NOCs are therefore continuing to employ Digital Oil Field (DOF) policies in their green and brown field business planning. At the end of 2011, one leading IOC estimated it had incrementally increased production levels by 78,000 net boe/d directly as a result of their DOF programme.