RE:Holy Canoly!Dfly already answered your question when in an earlier post today he asked about mud weights. The formula for figuring out hydrostatic pressure of mud column in a well bore that any good roughneck knows is total vertical depth x pounds per US gallon mud density x 0.052. Normally pressured means seawater at 8.5 ppg (pounds per US gallon) will contain formstion pressure at any depth. Abnormal pressure means that the pressure in the formation must be coming from even greater depths and is trapped in a reservoir that should be normally pressured.
So the deep Santonian should only need a mud weight of about 8.5 ppg in order to contain it if it were normally pressured. Yet Dfly was talking about 15.25 ppg. The lower Santonian is being fed from below and the pressure is being trapped by an impermeable shale (illite seal). Go talk to you're other "experts" on this board on what conditions are necessary to turn clay "smectites" into "illites". The same connditions that turn kerogens into hydrocarbons. Dfly been saying this all along. Don't believe me? Why would he even mention mud weights in his previous post if he didn't know wtf he was talking about????