OGA: Publishes ‘UK Oil and Gas Reserves and Resources’ report



OGA: Publishes ‘UK Oil and Gas Reserves and Resources’ report

The UK’s petroleum reserves remain at a significant level which could sustain production for at least the next 20 years; and beyond if additional undeveloped resources can be matured.

The Oil and Gas Authority’s (OGA) report “UK Oil and Gas: Reserves and Resources”, published today (31 October 2017), shows that overall remaining recoverable reserves and resources range between 10 to 20 billion barrels of oil equivalent (boe).

The findings of the report include:

  • To date, a total of 43.5 billion boe has been produced from the UK and UK Continental Shelf (UKCS).
  • The OGA estimates that UK reserves are approximately 5.7 billion boe (probable) and these alone, based on current production forecasts and not taking into account potential future exploration successes, have the capacity to sustain production for at least the next two decades.
  • However, there is a significant opportunity to add to these reserves by maturing the UK’s considerable contingent resources. The OGA estimates there are 7.4 billion boe of proved undeveloped resources. Much of this resource is in mature developed areas and under consideration for development. This will require substantial investment in new field developments and incremental projects.


  • Replacement of proven and probable reserves remains a concern. In 2016 approximately 600 million boe were produced however only 80 million boe of contingent resources were matured to reserves.
  • Exploration success in 2016 helped add 210 million boe to the contingent resources.
  • The OGA’s current estimate of prospective (undiscovered) resources is 6 billion boe, with a range from 1.9 billion boe (lower estimate) to 9.2 billion boe (upper estimate).
  • Taking account of this range of possibilities for prospective resources, together with the range of discovered reserves and contingent resources shown in the report, the current best estimate of remaining recoverable hydrocarbon resources from the UKCS is in the range 10 to 20 billion boe.

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