A 20-century crews are moved from the drilling rig on the Troll field for a … – new york times

A 20-century crews are moved from the drilling rig on the Troll field for a gasshendelse Saturday morning.

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107 persons were on board the drilling rig Songa Endurance when crews discovered gas on the drill floor Saturday morning.

– We call it not a gas leak, but it was discovered smaller amounts of gas, ” says media relations Ole Anders Skauby of Statoil.

Patch in the oljelekkasjen

the Gas appeared to come from a well where there had been complications with pulling out produksjonsstrengen.

the Well is now secured with the de-sludging valve (BOP) around the drill string at the sea floor and with the valve in the top of the rig. Efforts are underway to stabilize the well, writes the company in a press release.

Moved away

Extra workers were flown out to the drilling platform. A 20-odd of the crew on board were so moved to other installations on the field. This is the crews without the tasks relating to the event.

Both Statoil and Songa Offshore has mobilized beredskapsorgansisjoner. Statoil has people in place in Bergen and Stavanger. Also, is it ready to ship and helicopter, in case the situation develops.

There is still pressure in the well and efforts are underway to stabilize the well, writes Statoil. Liquid to stabilize the well is now sent out to the rig from shore to be able to carry out this work. These supplies are expected on the field around noon. 20.00 in the evening.

Impairment loss provides loss for Songa Offshore

This is the fluid that takes up the gas and thus reduce the pressure that builds up in the isolated from surroundings well.

Two barriers

Statoil characterizes the event as a brønnkontrollhendelse. The incident was reported to the company’s emergency clock 09.50 Saturday.

But the short answer is that one of the two barriers in the well are gone. We should always have two barriers to ensure against leakage, if we lose a barrier, which may be a valve, cement or drilling mud, we get what we call a brønnkontrollhendelse. Then we need to restore the other barrier, and that is what we work with now, ” Skauby.

Songa Endurance work on the well G4 on the Troll field near the Troll B, then complications arose.

the Troll field is located in the northern part of the north Sea, about 65 kilometres west of Kollsnes in Hordaland.