Deepwater Horizon - Transocean Oil Rig Fire

[QUOTE=bigmoose;36279]So all us driller wannabe’s can follow along with the developing discussion on SPP… could a man in the know confirm or clarify the following:

Is SPP = Stand Pipe Pressure ? = Pressure in the stand pipe or pressure exiting the mud pumps ? Is this the mud pressure in the Drill String (DS) up at the Top Drive ?

… and to clarify the positions of key personnel (in sort of layman’s/land based terms):
Company Man = BP Manager in Charge of Operations when Rig Connected to Well head
OIM = Company Affiliation Transocean? Offshore Installation Manager in charge of the rig when connected to well head?
Toolpusher = Transocean Manager in Charge of Drilling Operations
Driller = Transocean man with hands on the controls[/QUOTE]

It is the pressure being read on the standpipe. It will be about 50 psi les than what you see on your mud pump guage.
The pressure you read on your mud pumps is the collective pressure required to move mud through the standpipe, the drill pipe and the Annulus. It represents all the pressure losses to get mud moving at a certain pump rate.