In 2004 Chevron's Rosebank oil and gas discovery well (213/27-1) was drilled by the Stena Carron and then sidetracked (213/27-1Z) into the large Rosebank structure.
http://energy.pressandjournal.co.uk/Article.aspx/960430
Forward to 2011 ..
Again drilling at a new site on Lagavulin, Chevron is now sidetracking at Lagavulin with the Stena Carron drillship in a sidetrack well (217/15-1Z) which commenced on 22nd January.
Hi Father Paul
Thanks for the information.
Presumably a sidetrack is considered a positive as there has been no negative drilling news (lost tool down the hole ).
I guess there will be an additional time requirement to drill the sidetrack. We are now a few days over the four months originally envisaged.