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Premier Oil makes successful gas find at Tolmount East



Premier Oil has announced a successful gas find in the Tolmount East well, located in the UK’s Southern Gas Basin in the North Sea.

The Tolmount East well was drilled in the UK's Southern Gas basin
(Image via Premier Oil)

The well was drilled in P1330, Block 42/28d where Premier has a 50% operated interest. The well was drilled 4km east of the 500BCF Tolmount gas field, targeting 220BCF of P50 gross resource.

According to Premier’s announcement on Thursday, the well penetrated 241 feet of gas bearing high quality Leman sands with a net-to-gross ratio of 71%, porosity of 16% and gas saturation of 82%. The quality and thickness of reservoir sands encountered are at the upper end of expectations and no gas water contact was penetrated.

A full Logging-While-Drilling and wireline acquisition programme was undertaken, including extensive pressure data and fluid sampling. The reservoir section was successfully cored with 216 feet being recovered.

Premier will now integrate the well data with a 3D seismic dataset as part of their fast-track development planning for Tolmount East.

“We are delighted with this commercial discovery at Tolmount East, the development of which will add significant value to our UK portfolio,” commented Tony Durrant, CEO of Premier Oil.

“Elsewhere in the Greater Tolmount Area, we are making excellent progress with our sanctioned Tolmount development which remains on schedule for first gas by the end of next year and will add a net 20,000 to 25,000 boepd to Group production.”

The well was drilled using the Valaris JU-123 rig, formerly known as Ensco 123. 

According to Premier, this result has positive implications for other targets within the area, including Tolmount Far East and the Mongour discovery.

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Premier Oil makes successful gas find at Tolmount East - Time to read 2 min
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