公开(公告)号：WO2017007766A1

公开(公告)日：2017-01-12

申请号：PCT/US2016/040996

申请日：2016-07-05

Applicant: BAKER HUGHES INCORPORATED

Inventor： KRIEG, George, N. ,  JOYNER, David, J. ,  HOLCOMB, Ryan, C. ,  TAYLOR, Jake, H.

IPC: E21B29/00 ,  E21B29/12

CPC classification number: E21B29/005 ,  E21B23/04

Abstract: In a plug an abandon environment with casing and a tubular string running through the casing a tool is placed at a desired location for a severing of the inner tubular. A first set of blades is extended from a housing to cut radially until the inner tubular is severed. A second set of blades are then extended for axial milling with a reach limit of the outside wall of the severed tubular at a location between upsets. As the axial milling reaches an upset, the second set of blades is allowed to retract and a third set with a longer reach is extended to axially mill the upset. Thereafter the third set of blades is allowed to retract and the second set is extended to continue axial milling. The second and third sets of blades can be reversed so that initial axial milling can be at the upset rather than between the upsets followed by milling between the upsets with the shorter reach blades.

Abstract translation: 在插头中，具有壳体和穿过套管的管状串的放弃环境将工具放置在期望的位置以切断内管。 第一组叶片从壳体延伸到径向切割直到内管被切断。 然后将第二组叶片延伸用于轴向研磨，其中断开的管的外壁的到达极限位于颠簸之间的位置。 当轴向铣削达到镦锻时，允许第二组叶片缩回，并且具有较长距离的第三组延伸到轴向铣削镦锻。 此后，允许第三组叶片缩回并且第二组延伸以继续轴向铣削。 第二组和第三组叶片可以颠倒，使得初始轴向铣削可以处于不利地位，而不是在较短的接近叶片之间的扭曲之间铣削。