ConocoPhillips starts up North Sea Tommeliten A field

ConocoPhillips started natural gas production from Tommeliten A field in the Greater Ekofisk area in the North Sea. Natural gas from the new field is being produced and delivered nearly 6 months earlier than planned, the operator said.

ConocoPhillips Skandinavia AS started natural gas production from Tommeliten A field in the Greater Ekofisk area in the North Sea. Natural gas from the new field is being produced and delivered nearly 6 months earlier than planned, the operator said in a release Oct. 13.

Regulator approval for startup was granted the week prior (OGJ Online, Oct. 5, 2023).

Tommeliten A is a fractured chalk field containing gas condensate and volatile oil. The field consists of an Ekofisk formation and a Tor formation, similar to surrounding fields in the Greater Ekofisk Area. The field is a UK-Norway trans-boundary field as it extends from Norwegian Block 1/9 into UK Block 30/20. The development plan is based on the Norwegian PDO.

The development concept comprises a two-by-six slot subsea production system with an electrically heated flowline tied back to the Ekofisk complex. A new processing module has been installed on Ekofisk 2/4 M and an electrical heating module on Ekofisk 2/4 Z, as well as upgrades to the existing gas train on Ekofisk 2/4 J.

Two pilot holes have been drilled during field development, which have allowed for one additional production well, ConocoPhillips said, increasing the total number of production wells to 11. A twelfth well may be drilled later, the operator said.

Production is expected to ramp up to a peak of 35,000-48,000 boe/d, with further upside potential dependent on processing capacity and well streams assessed over time, the company said.

Total resource potential for Tommeliten A field is estimated at 120-180 MMboe (70% gas, 30% condensate).

Total capital investment for the project is about NOK 13 billion.

Emissions intensity at Tommeliten A is estimated at 7.5 kg CO2 equivalent/boe, Scope 1 & 2 on a net equity and gross operated basis.

ConocoPhillips Skandinavia AS is operator with 28.1385% interest. Partners are PGNiG Upstream Norway AS (42.1978%), TotalEnergies EP Norge AS (20.1430%), Vår Energi ASA (9.0907%), ConocoPhillips (UK) Holdings Ltd. (0.2109%), TotalEnergies E&P UK Ltd. (0.1510%), and ENI UK Ltd. (0.0681%).

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