| CALEDUS LIMITED Patent applications |
| Patent application number | Title | Published |
|---|
| 20120125689 | Drill Pipe Tubing and Casing Protector - An assembly and method for protecting a pipe string movable within a wellbore. A generally annular body ( | 05-24-2012 |
| 20100032170 | METHOD AND APPARATUS FOR RUNNING TUBULARS - A method is disclosed for running a completion string, such as casing, into a predrilled wellbore while allowing rotation of a downhole component with respect to the completion string. The downhole component may be a drill shoe or reamer shoe for example. There is also disclosed a drillable or millable drive assembly for driving the rotation of a portion of the casing assembly and other applications thereof. | 02-11-2010 |
| 20080236841 | Downhole Swivel Sub - A swivel sub for connection in a work string between a workstring and a downhole apparatus is disclosed. The sub has a first substantially cylindrical body, including a sleeve portion having one or more teeth and a second substantially cylindrical body being partially located within the sleeve portion. The bodies are arranged to rotate relative to each other. A sliding sleeve, having one or more teeth arranged mutually engage with the first teeth is axially moveable between disengaged and engaged positions, in one embodiment by a pressure differential being created in the sub. Methods of running the tool are described, with particular application to setting and hanging of liners and screens. The invention also offers advantages for drilling applications. | 10-02-2008 |
| 20080196903 | Shoe for Wellbore Iining Tubing - This invention relates to a shoe for wellbore lining tubing and to a method of locating wellbore lining tubing in a wellbore. In one embodiment, a shoe ( | 08-21-2008 |
