METHOD FOR REMOVING GRAVEL PACK SCREENS

摘要

A method of removing a gravel packed screen to reach another zone is described. The method involves a bottom hole assembly comprising an isolatio n device for the screen and a tool to latch on to it. A perforating gun is sho t off to put holes in the screen to allow gravel to come through. A flow throu gh a reversing valve is initiated to urge the gravel into the newly perforated screen while a vibrator shakes the screen and stimulates gravel flow through the screen. Alternatively, the screen is not isolated and a reverse circulation from the surface in conjunction with vibration urges the gravel to flow through the screen and out through the tubing supporting the bottom hol e assembly.