DRILL TOOL INSERT REMOVAL

摘要

A tool insert is removable from a fluid passage in a drill tool body by pressurizing fluid in a removal volume defined between the tool insert and the drill tool body, to by exerting a net fluid pressure bias on the tool insert in a removal direction along the fluid passage. The tool insert can be an annulus sealing assembly mounted in a rotating control device (RCD), with the removal volume being defined radially between a body of the RCD and a bearing assembly of the annulus sealing assembly. A common hydraulic liquid may be used for lubricating the bearing assembly and for hydraulically actuated removal of the annulus sealing assembly.

主权项

1. A method of removing a tool insert from a fluid passage in a drill tool body, the method comprising:
displacing the tool insert in a removal direction relative to the drill tool body by pressurizing a fluid in a removal volume defined between the drill tool body and the tool insert, to exert a net fluid pressure bias on the insert in the removal direction.