Oil production at the Horse Hill field in Surrey ranked fourth in the UK onshore, according to the latest official data. But the daily average was below that previously claimed by the operator and was less than 2% of the UK onshore total.
The figures released by the Oil & Gas Authority (OGA) were the first for Horse Hill since it was approved for long-term production in March 2020.
They showed that Horse Hill produced 181 barrels of oil per day (bpd) in March 2020 and 243 bpd in April 2020.
The site operator, a subsidiary of UK Oil & Gas plc (UKOG), has described the Horse Hill-1 (HH-1) well as the UK’s most productive onshore wells outside Wytch Farm in Dorset.
The OGA data is for fields or sites. It does not show the performance of individual wells where there are more than one in a field. It is not possible to use it to compare HH-1 with any of the Wytch Farm wells.
According to the data, Horse Hill’s daily production for March was 1.18% of the UK onshore total. The April figure was 1.62%.
A spokesperson for UKOG said the March production figures were for 19 days, and averaged nearly 300 bpd and included no water.
At the time of writing, shares in UKOG were unchanged at 0.215p.
UKOG announced plans in June to reperforate and recomplete HH-1. The work was due to be done in summer 2020 and UKOG said “if successful we remain confident this programme can further improve the well’s oil production rate”.
The Wytch Farm field, which has multiple producing wells, totalled 12,835 bpd in March 2020 and 12,716 bpd in April 2020. This was 83.91% of UK onshore oil production in March 2020 and 84.79% in April 2020.
The second highest ranking field in March and April 2020 was Singleton, operated by IGas in West Sussex (March 2020: 431 bpd, 2.82% of the UK total; April 2020: 358 bpd, 2.39%).
The IGas field at Welton in Lincolnshire was ranked third (March 2002: 393 bpd or 2.57%; April 2020: 384bpd or 2.56%). In 2019, Welton was the second biggest UK onshore producer, behind Wytch Farm.
11 oil fields produced no oil in March and April. Some companies reported they had shut in wells during the Covid-19 outbreak.
Updated 18/8/2020 to include company comment