UK Offshore Production Reaches 80% Efficiency Years Ahead of Expectations
For the seventh straight year, the regulatory body has found offshore operations continue to improve based on an efficiency model developed in partnership with the SPE.
In a new report, the UK Oil & Gas Authority (OGA) highlights that the country’s offshore sector improved its production efficiency for the seventh straight year.
In 2012, fixed-leg platforms and floating facilities in the UK continental shelf operated with a production efficiency rate of only 60%. In 2019, the figure jumped by 5% year-over-year to hit 80%—a target the OGA hoped would be reached by 2022.
Based on best practice guidelines established in partnership with the SPE, the OGA calculates production efficiency by comparing actual wellhead production vs. the maximum economic production potentials. Production losses include reservoir degradation, plant shutdowns, and pipeline constraints. Under this equation, actual wellhead production improved by only 1% but factoring in reduction in economic production potential resulted in a 5% increase in efficiency.
The OGA said the recent gains are the result of a “concerted effort by the industry” to stem production losses and avoid plant shutdowns, which exceeded schedule by only 1% last year compared with a 15% overrun in 2018.
Improvements in operations resulted in higher efficiencies across every major offshore region except for West of Shetland, home to the UK’s northernmost frontier exploration areas.
In the central North Sea region, production efficiency mirrored the aggregate with a wellhead output increase of 1% and an efficiency increase of 5%. The most efficient operations in the region were floating production hubs which boasted an 85% efficiency rate compared with 80% on large fixed-leg platforms.
Between operations in the Irish Sea and the southern region of the UK’s North Sea, overall efficiency was 75% and 76%, respectively. Among the two regions, unmanned platforms improved efficiency by 14% but overall efficiency remained well below the regional average at 68%. Meanwhile, small manned platforms achieved 80% efficiency. The regions also combined for a planned shutdown overrun rate of 10%.
OGA estimated that the increasing production efficiency rates since 2014 have lowered the emission intensity of each produced barrel by 10%. To learn more, access the full report.
Source: UK Oil & Gas Authority