Oranje-Nassau Energie B.V. (ONE) manages a balanced portfolio of operated and non-operated assets in the North Sea with a strategic focus on the production and exploration of gas reserves. ONE currently holds 45% interest and operatorship of the M07-A gas field, located in the Dutch North Sea sector. Other partners in the field are EBN and TAQA Offshore.
High-capacity gas reservoir in the Terschelling Basin
Gas was discovered in the M07-A gas field in 1996 in an over-pressured, good quality Triassic sandstone reservoir at 2850m sub-sea (mss) in the Terschelling Basin. An overlying lesser quality and equally over-pressured Jurassic sand interval tested gas at sub-commercial rates. In 2009 the Triassic reservoir was developed by a new well, M07-A01X, supported by a custom-built mono-tower (minimum facilities, 25m water depth) with the capacity to accommodate up to 3 wells. Produced gas and condensate is treated at the nearby NAM-operated L09-FF platform and exported via the NOGAT system to Den Helder.
In 2010, a Jurassic appraisal M07-A02 well aimed at a more down-flank reservoir location tested gas for a short period at commercial rates. The well could produce to L09-FF after installation of a free water knockout vessel on the mono-tower in 2013. In 2014 and 2015 the M07-B field was further developed by the extended reach M07-A03 well and the M07-A02X well.