发明名称 Mill and method for drilling composite bridge plugs
摘要 A system used to remove multiple isolation plugs from a wellbore. The system is efficient in fluidizing and circulating proppant located below an upper plug resting on top of proppant settled above a lower plug. The system uses a central port of the mill that is in communication with coiled tubing to fluidize and circulate the proppant around the perimeter of the upper plug. Once the proppant has been circulated from underneath the upper plug, the upper plug may mate and rotationally lock with a lower plug set within the wellbore. Upon locking, the system is able to rapidly mill out the upper plug and the lower plug until the lower plug is no longer set within the wellbore. The system provides for the rapid removal of multiple plugs positioned within a wellbore where an amount of proppant is present between the plugs.
申请公布号 US8127851(B2) 申请公布日期 2012.03.06
申请号 US20080015949 申请日期 2008.01.17
申请人 MISSELBROOK JOHN GORDON;BAKER HUGHES INCORPORATED 发明人 MISSELBROOK JOHN GORDON
分类号 E21B21/00 主分类号 E21B21/00
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