[QUOTE=KASOL;36045]Alcor,
http://www.energy.gov/open/documents/3.1_Item_2_Macondo_Well_07_Jun_1900.pdf The Burst disks are marked in the 16" liner on three depths. The idea with rupsture disk is: If 9 7/8" x 7" annuls blocks at 17168ft and pressure increases during prouction, the 16" will rupture before the 9 7/8" casing collapse.
You can read about rupture disks and why/how they are used here: http://www.spe.no/stavanger/doc/SPE%20131004.pdf
When you order P-110 casing that is minimum strenght, you may get 140 kpsi istead due to how they are produced. So it is difficult to estimate when the casing fails.[/QUOTE]
Thanks Kasol,
So, assuming the leak is now confirmed as coming up the Annulus of the Production string, the 16" Rupture disk may have failed either before or more likely after the ‘Top Kill’ was conducted. Have you identified what grade of 16" casing was used and what is the Burst/collapse pressure? Where are the weakest points?