The reason you want that flow to continue is it alleviates pressure on the wellbore.
This meant replacing the 14-pound-per-gallon mud that was in the wellbore with 8.5-pound-per-gallon sea water.
These operators also place an emphasis on appropriate casing designs and cementing practices to maintain wellbore integrity and protect the freshwater aquifers.
They are within around 15 feet of the wellbore at this point.
During this 14-minute period one can conclude that hydrocarbons were flowing and pushing more fluid from the wellbore than was being pumped in.
In ranging, they withdraw the drill pipe and put down an electrical cable and actually try and sense the magnetic field around the wellbore.
Obviously Thad Allen discussed the pressure test for the well and getting a sense and judging the intensity of the wellbore through pressurization, right?
We did the top kill -- we were able to force mud down the wellbore to the point where we actually suppressed all the oil.
The hope was that the natural flow of the well might break it free and push it up the wellbore and out of the way.
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Obviously any action undertaken by BP to deal with the wellbore and to deal with the well itself requires the signoff of the federal on-scene coordinator.
We remain confident in our drilling expertise and company standards, which are built upon a foundation of redundant safety systems to closely monitor pressure within the wellbore.
Originally SLB asked for them to be pulled up out of the hole for examination but instead they were cut free to fall to the bottomof the wellbore.
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In a lot of wells I saw that the zone was taking drilling mud, soaking it up and leaving a layer of mud cake across a permeable interval of the wellbore.
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We then waited for months for the liner to be removed from this tiny wellbore so that oldstyle guns , too fat to fit through the liner, could be placed into the hole.
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Thus the industry has for decades relied on a dense mud system to keep the hydrocarbons in the reservoir and everything that is done to maintain wellbore integrity is tested, and where a wellbore integrity test fails, remedial action is taken.
You could either do it separately if the integrity of the wellbore has been maintained through the explosion, and if not, it helps when the relief well intersects to the well in having a separate point of pressurization for mud and cement.
Given the two red flags that had been thrown up previously, one would have expected that as a precaution a cement plug would have been placed somewhere in the wellbore as a secondary pressure seal before this primary pressure control system (heavy mud) was evacuated from the wellbore.
We will ensure that at every step of this, that they are taking the steps that our scientific team believes is necessary to ensure the safety of the area, to ensure the safety of the well and the wellbore, and that no extra harm is done in what we already understand is a catastrophic situation.
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