Method of temporarily closing perforations in the casing
First Claim
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1. A METHOD OF TEMPORARILY PLUGGING THE PERFORATIONS IN A CASING WHICH HAS BEEN SET IN A BORE HOLE, WHICH COMPRISES INJECTING A FLUID UNDER PRESSURE INTO A CASING TO CAUSE A FLOW OF FLUID THROUGH THOSE PERFORATIONS WHICH ARE ADJACENT PORTIONS OF A FORMATION IN WHICH THE BACK PRESSURE IS LESS THAN THE PRESSURE OF THE STREAM, ADDING PLUGGING ELEMENTS WHICH ARE LARGER THAN THE PERFORMATIONS IN THE CASING TO THE STREAM WHILE MAINTAINING THE PRESSURE ON THE STREAM WHEREBY CERTAIN OF THE PLUGS WILL BE CAUSED BY THE FLOW OF FLUID TO LODGE AGAINST SAID PERFORMATIONS THROUGH WHICH THE LIQUID HAS BEEN PASSING AND SEAL THE SAME.
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1. A METHOD OF TEMPORARILY PLUGGING THE PERFORATIONS IN A CASING WHICH HAS BEEN SET IN A BORE HOLE, WHICH COMPRISES INJECTING A FLUID UNDER PRESSURE INTO A CASING TO CAUSE A FLOW OF FLUID THROUGH THOSE PERFORATIONS WHICH ARE ADJACENT PORTIONS OF A FORMATION IN WHICH THE BACK PRESSURE IS LESS THAN THE PRESSURE OF THE STREAM, ADDING PLUGGING ELEMENTS WHICH ARE LARGER THAN THE PERFORMATIONS IN THE CASING TO THE STREAM WHILE MAINTAINING THE PRESSURE ON THE STREAM WHEREBY CERTAIN OF THE PLUGS WILL BE CAUSED BY THE FLOW OF FLUID TO LODGE AGAINST SAID PERFORMATIONS THROUGH WHICH THE LIQUID HAS BEEN PASSING AND SEAL THE SAME.
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