ONE-Dyas and Eni are preparing further offshore drilling activity in the Dutch sector of the North Sea in the second half of 2026, with work linked to the N05-A, L10 and K12 areas.
Tenaz Energy holds a 33.3% working interest in the N05-A pool, which forms part of the Gateway to the Ems area. The company said the N05-A-01 well produced steadily at 74 million cf/d in Q1 2026. Operator ONE-Dyas completed the N05-A-03 development well, which started production in Q2 2026 at a stable rate of 40 million cf/d.
Gas production from the second production well on the N05-A platform began in April 2026. With the second well online, annual production rose from about 700 million cubic meters to around 1 billion cubic meters. The platform’s full production capacity is 2 billion cubic meters per year.
That level represents 7% of Dutch gas demand and 2.5% of German demand. Tenaz expects maximum production to be reached in Q4 2026, before winter, as drilling work continues.
The broader GEMS area, where N05-A is located, has an estimated potential of about 50 billion cubic meters of natural gas. The resources come from several smaller fields that support a stable supply to both countries.
ONE-Dyas said the second well marks the move from start-up to a higher production phase. The company linked the additional output to lower import dependence, use of existing North Sea infrastructure and continued operations within current environmental and safety standards.
The N05-A platform is powered by electricity from the nearby Riffgat offshore wind farm, allowing gas production with virtually no CO2 emissions. Tenaz said drilling of the N05-A-02 development well also started in Q1 2026. After that well is completed, ONE-Dyas is expected to drill one extension well and one exploration well from the platform during H2 2026.
Under the L10 license, in which Tenaz holds a 21.4% working interest, Eni completed the L10-M4 well, also known as Malachite. The well recorded 14.5 million cf/d at a flowing wellhead pressure of 1,755 psi during a seven-hour test. The L10 facility is being prepared to connect the well.
Tenaz said the rig has moved to another area where it has no interest. Under current plans, Eni is expected to drill a new sidetrack well on the K12 license in late H2 2026.
Tenaz also plans to drill an additional horizontal stimulated K17 well in the Dutch North Sea before continuing activity on other operated licenses. The company recently extended the contract for ADES’ Shelf Drilling Winner rig.
