It may be that the mechanism that is in place, "the stack," is frozen. The reason the pressure may not be increasing is because it is frozen. The pressure as it is now might be increasing slowly as the ice inside the well bore increases and does not indicate there is more pressure because of the vat.
The GAUGES measuring the pressure may be 'inhibited' from delivering accuracy due to frozen hydrates. There is definately a potential for inaccuracy in the readings.
THE VAT IS NOT DIMINISHED IN ITS CAPACITY. NOT DEPLETED AT ALL. The oil and gas previous to the closing of the new cap was just as significant as the first day this occurred. The vat has plenty of pressure in it. This is about ICE.
The issue is this, the four risers should be open, BUT, very slowly as to not explode the new cap AT THE FLANGE. If there is a sudden movement of solid (ICE) through 'the stack' it could destroy it and we will be worse off than before.
The new cap has to remain a 'flow' to insure its integrity. The ships will have to receive the oil to maintain a flow and not pollute the Gulf anymore than it currently has been effective.
There cannot be any further 'waiting' to this issue. The pressure is a monster and it has its own dynamics. There is a sea floor 'at risk' and there is a 'worse case' scenario that will yield NO RESOLVE to this disaster. Considering the 'catastrophic' nature of this potential and 'real' outcome it is not prudent to 'play the odds.' All and every precaution has to be taken and that cap HAS TO REMAIN functioning. It has to be the 'vent' to the well when the relief wells are connected to the current well. We do not need a more unstable sea floor. We need to maintain the integrity of the well cap and that is not assured at this moment. Not if there is methane ice (hydrates) at the flange. If there was methane ice just happening haphazardly around the stack it would make sense the leak of methane was from another source and simply floating in the water and adhering to the stack. BUT, it is completely obvious that the methane ice is 'at the flange.' That is DEFINITIVE.
There CANNOT be any guess work here and if there is an INCREMENTAL 'doubt' about anything there has to be decision making on the side of safety and integrity of the stack. According to the BP reporting we are about a month away from relief well intervention. That is where the 'target' is and the stack has to be intact and functioning when that occurs. There is too much on the line to allow speculation of this well head and the stack. We have to maintain a flow through the new cap to the risers and to the ships in order to INSURE the best outcome one month from now.
No more speculation. That cap has to be opened and the flow returned to insure its integrity. There is absolutely no logic to 'speculation.' If there is not SOLID facts then the decisions is to return the flow to the cap. This is NOT good decision making on the part of BP.
If there is any discussion of using a 'warming method' to the stack, it has to be approached with great caution as the stack may be filled with methane, even if that is in the form of hydrates. This is a monster. It simply is.
Nothing like walking on eggshells now is there?