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To: Bearcatbob who wrote (134767)6/13/2010 8:20:30 AM
From: Aggie2 Recommendations  Respond to of 206209
 
Hi Bearcatbob,

The pressures under which the well is flowing means the formation fluid is all virtually one phase. It is only as the fluid nears sea level that the gas is breaking out of solution in meaningful volumes. At the wellhead (i.e. at the seabed), the pressures are still in excess of 2000 psi, and nearly all of the gas is still in solution.

That is really one of the root causes of the blowout, when you think about it - they didn't realize they had taken a kick until the gas started breaking out near surface. By then, it was all in the drilling riser above the BOP's and there was no way to contain it.

Aggie

<Edit> - You point is well taken though - now that they are collecting a good portion of the flow and bringing it to the surface, they are finally able to get a good measurement of the Gas Oil Ratio. In other words, they know how much gas is being flared, and how much oil they are collecting. This is an important piece of information, and it is very useful in narrowing the range of uncertainty around the well's flow rate.



To: Bearcatbob who wrote (134767)6/13/2010 8:30:47 AM
From: Ken Robbins  Respond to of 206209
 
With the gas oil ratio at the drill ship measured at 2000 cu. ft. per barrel, someone could do flash calculations to indicate the gas content at points back along the path upwards from the source of the inflow. Then I would suppose that two phase flow calculations would give a pretty good answer on the flow rate subject to the unknowns in the geometry of the flow path.

Are they saying that the new cap might not leak very much?