| 摘要 |
A tubing shoe 110 for use on a work string within a wellbore includes a cylindrical body 112 having a nose portion 114 with a rounded head and a reaming portion 122 located behind the nose portion including a number of raised reaming members 26. The nose portion has a number of blades 70 extending from the head towards the body. The blades may include a cutting surface to assist the shoe in breaking through shale and clay stone bridges. The reaming members may be teardrop shaped and may funnel and grind approaching debris. A non-aggressive stabiliser 154 in the form of helically arranged flutes may also be located on the shoe. |
