Sedco 700 Blowout Offshore This Week

Comment by Michael Smith on June 12, 2009 at 5:59pm

so here is a question how do they cap that one I have never bee off shore so I dunno

Comment by John on June 14, 2009 at 9:59am

I was on that rig as a Driller, in the North Sea, about 9 months, 1981, then moved over to the Sedneth 701, the good old days!

Comment by John on June 15, 2009 at 10:17am

Sedco700. Offshore Nigeria

Seismic studies (Shallow hazard assesment) was done. with no risk of shallow gas detected in the area. (wells previously drilled with no shallow gas observed)

Plan: Drill 26" section riserless (normal) and set 20" casing.

Encountered shallow gas (unexpected) 300m below mudline.
Pumped kill mud instantly, followed by seawater at max flow rate, bubbling stopped after 40mins. (dynamic kill + bridging of formation??)

BHA stuck in hole, cut pipe, P and A hole.

Official report will be out soon.

Comment by Nick Strahan on July 5, 2009 at 1:53pm

This is why I'll NEVER work offshore. No place to run!

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