The Incidents in Merging Surroundings

Snorre A (henceforth SNA) is a combined living, drilling and production platform in the Tampen area, 150 kilometres west of the Norwegian city of Florp. The living quarters can accommodate approximately 220 persons and the platform is anchored to the sea bed by 350-meter tension legs. The template consists of forty-two wells with risers and export lines. Aside from the offshore installation, SNA also has a division on land. 

Exit meetings refer to the final meetings before the operation begins. 

It was decided to make holes in the scab liner to equalise the pressure behind the pipe before they pulled it out. As soon as the scab liner was pulled, gas that had 

A few hours later a gas flow was observed in the well and the annular safety valve on the BOP was thus closed. The pressure under the BOP increased after it was closed, but soon after the well began to lose mud. Because of leaks in the 9 5/8-inch and 13 3/8-inch casings, the well pressure came in contact with formations behind the 13 3/8-inch casing, which then burst. There was gas under the platform outside the casing protection and the situation escalated with a gas blowout on the seabed. The well control operations became extremely diEcult and dramatic, but ultimately the eontrol of the well was restored. 

Gullfaks C is an oil platform on the Gullfaks field in the North Sea. The frame of the platform was built by Norwegian contractors, with a Gondeep concrete substructure 

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