Patent ID: 8839873
Filing Date: 2014-09-23
Classification: E21B

Abstract:
1. A method of treating an interval defined by a lowermost plug and an uppermost plug of a plurality of plugs in a borehole extending from a surface location to a subterranean location comprising: delivering a plurality of plugs, which when landed, contact a portion of a casing or liner for sealing therewith, each said plug connected to a respective releasable perforating gun for landing said plugs at respective predetermined profiles in the casing or liner through the interval; removing a respective gun from each plug with said plug isolating a portion of the casing or liner after the respective said gun is fired and before the next plug is delivered; treating a portion of the interval defined by the plug previously supporting said respective gun just fired before the next plug is delivered; opening a passage through the interval in said casing or liner, which extends the length of all the plugs after the interval is treated by nondestructive physical removal of said plugs from the interval.