Annual Report 2008

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Glossary/Definitions

2C Proved and probable contingent gas resources
Block Sub-division of an underground oil and gas reservoir
bopd barrels of oil per day
Certification of reserves Reserves certification based on a seismic survey conducted by an independent reserves Auditor
Dragon Oil/the Group Dragon Oil plc and its various subsidiary companies
Dual completion Two pay zones in the same well that produce up independent flow paths in the same well
m metres
MENA Middle East and North Africa
Overlift Over production, beyond the allotment or contract volume, that must be accounted for in a contract
Product Sharing Agreement (PSA) Contractual arrangement for exploration and development of hydrocarbon resources
Platform Large structure used to house employees and machinery needed to drill wells in an underwater reservoir to extract oil and gas for transportation to shore
Proved reserves (1P) Reserves claimed to have at least a 90% certainty of recovery under existing economic and political conditions, and using existing technology.
Probable reserves (2P) Reserves based on median estimates, and claim a 50% confidence level of recovery
Seismic survey Method of investigating subterranean structure based on determinations of the time interval that elapses between the initiation of a seismic wave at a selected shop point and the arrival of reflected or refracted impulses at one or more seismic detectors
tcf trillion cubic feet
Underlift Under production, short of the allotment or contract volume, that must be accounted for in a contract
US Cents United States cents
US$ United States Dollars
Workover Well intervention involving invasive techniques, such as wireline, coiled tubing or snubbing