Retrievable Locking Type Cementing Bushing

It provides a superior liner to work string seal that retrieves with removal of the liner running/setting tools, and eliminates any bushing drill-out. It is pressure-balanced assembly that does not exert any damaging loads onto the polished cementing seal joint. All seals are provided in material. Locking-dog assemblies are spring-loaded to insure positive engagement, particularly in high-angle or horizontal applications. It is easily installed in the field and requires no special handling or assembly tools. It is of heavy-duty design and construction, ensuring a long, usable service life. Standard configurations allows for slip on installation over a retrievable cementing seal joint. It may be run in conjunction with any running tool sub, liner top packer, or tieback seal  nipple packer equipped with its profile.
Features / Benefits :

• Positive locking dogs
• HNBR internal & external seals
• Pressure loading on support sleeve not cementing seal joint
• Easy field installation