relief well

And is anyone really, really watching to make sure that this relief-well business is going as it should be, that no corners are being cut?

On Tuesday, the company received permits to drill a relief well, which would be started half a mile from the current well site.

The relief well is a directional well drilled at a safe distance on the surface from the wild well.

bottom kill: The same technique, only many thousands of feet further down the well through a relief well.

But the long-term solution is a relief well, and that may not be in place until August.

The storm was strong enough to force BP to halt its relief well operations, with the drilling rigs pulling out late Thursday night.

The U. K. oil giant's costs include spill response, containment, relief-well drilling, grants to Gulf states, claims paid and federal costs.

So far, the first relief well is only about 1, 000 metres or so below the sea bed, and the second has only just been started.

An adjoining relief well had already been completed, and Macondo got a final wallop of cement.

The plume may not be staunched until a relief well can be completed, not until August at the earliest.

Some 100 feet below where it is now, the relief well will cut into the outer ring of the Macondo well and then into its central drill pipe.

Only when a relief well was completed (currently scheduled for mid-August) would the stream be permanently stopped.

If not, crews will wait until the completion of a 5, 500-meter relief well that will intersect the base of the well pipe.

BP began drilling a relief well at the weekend, but that could take three months, with leakage continuing all the while.

The final pieces of casing need to be placed on the relief well to protect it before a so-called "static kill" can begin.

BP resumed work on a relief well that will permanently end the risk of further oil escaping, Wells said.

Once the relief well has reached the right depth, there remain a number of risks.

On Thursday (July 8) BP said its operation to drill a new relief well to stop the Deepwater Horizon leak was ahead of schedule.

Coast guard Admiral Thad Allen says the evacuation has put back operations to drill relief well by seven to ten days.

Mud and cement would then be pumped in from a relief well below five to seven days later, Admiral Thad Allen said.

The final choice to end the leak is a relief well, but it is more than two months from completion.

If the relief well fails, BP is doomed.

As of yesterday when the pressures held on the cement plug that was put in by the relief well, we can consider this well dead.

What is a relief well, how does it work, and when will it be completed?

Application of Relief Well in Seepage Control and Diversion Measures for Main Dikes of the Yangtze River

Present Situation on Relief-well Mechanism Research

Researching a new type relief well pipe with replaceable filter core

Testing and Analysis on Structure Types of Relief Well

An Optimized Design on Relief-well of Embankments

Drill a relief well. Outcome: In progress