"Macondome" Pollution Containment Chamber
Assuming well intervention efforts continue to be unsuccessful, the next big milestone will be the installation of the subsea containment dome and the floating production system that will support it. We should know a lot more in one to two weeks. Schematics of the subsea, riser, and surface arrangements would be useful for those of us watching at home.
Relief Wells
From the BP relief well schematic, it appears that both wells will have the same target, so the 2-well program is solely for the purpose of killing the well as soon as possible. No information has been provided as to whether the flow is thought to be originating at the production casing shoe or in the annulus surrounding the casing.
Subsea Dispersant Injection System
BP is reporting good results with the seafloor dispersant system.
Bud's Offshore Energy (BOE) 