Plugging a well? Use creeping clay!Eocene mudstones from the Norwegian North Sea. Source: NPD

Plugging a well? Use creeping clay!

New knowledge about the depositional environment of Eocene sediments in the North Sea can be utilised for cost-effective well abandonment.

Until 2005, only cement and steel casings were used to seal off formations when abandoning wells. But what about using the sealing capacity of some of the rocks? Better, safer and cheaper In 2005, it was discovered that mudstones of Eocene age overlying the Oseberg field had naturally sealed the open space between the casing […]

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