FLEXIBLE WELLBORE BROACH

摘要

Methods and apparatus for milling and/or broaching within a wellbore ar e disclosed. A flexible broach runs into the wellbore and is located adjacent a portion of the wellbore to be broached. The broach reciprocates axially within the wellbore and removes at least part of the portion to be broached. Weight may be coupl ed to the broach, thereby applying a resultant side load for broaching an offset portion of the wellbore. The broach comprises a flexible member that may be a bare cabl e. When an abrasive material is disposed on an outer surface of the flexible member, the flexible member may be a cable, a continuous rod, or pressurized coiled tubing. Alternatively, sleeves positioned on the flexible member may have an abrasi ve material on their outer surface. A rotational mill that is either coupled to the broach or run in separately from the broach can further mill the wellbore.