Patent ID: 8215405

Claim:
A method to shut down a high pressure oil/gas well that is leaking under blowout conditions, said method comprising: making a servicing string of pipe to be ran in the oil/gas well that is leaking which is composed of at least a valve, a perforated joint and a sliding sleeve; wherein in order to assemble more joints in the servicing string of pipe the valve should be in a closed position and the sliding sleeve should be in an open position, so fluids can escape through the perforated joint making it possible to assembly the servicing string of pipe by reducing the amount of pressure which is trapped in the servicing string of pipe and reducing the chances for the servicing string of pipe to come out of the well due to the high downhole pressure; wherein the valve should be in the open position and the sliding sleeve should be in the closed position when the valve and the sliding sleeve are near the wellhead, so, they can be ran into the oil/gas well; building a filter which may have a grid placed anywhere in the oil/gas well, said grid should be located in the wellhead in order to guarantee that the servicing string of pipe will not be pushed out of the oil/gas well due to the high downhole pressure producing a disaster in a surface vessel where the operations are effectuated; wherein as the grid is placed downhole, the greater the downhole pressure, the greater the chance for the operation to fail; pumping a filter matrix through the servicing string of pipe where the matrix can be of any material with any geometry, said geometry should be in the shape of a ball, said ball density, size and roughness can be changed, for said filter steel balls should be used first, said balls are as big as it could be possible where the balls will be able to go up through the annular side of the servicing string of pipe and the casing or open hole; wherein the filter matrix should have a length calculated by the equation: I=p/ 0.052*δ where: I is the minimum length of the filter in feet, p is the downhole pressure in psi, and δ is the average density of the composed material that is forming the matrix in pounds per gallon.