Welltec A/s

Welltec Oilfield Solutions Ag

Thomas Sune Andersen

Jørgen Hallundbaek

Jørgen Hallundbæk

Paul Hazel

Sven Karsten Jensen

Jorgen Hallundbaek

Joergen Hallundbaek

Svend Karsten Jensen

The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and an inside wall of a borehole downhole. The annular barrier comprises a tubular part for mounting as part of the well tubular structure, an expandable sleeve surrounding the tubular part and having an inner face facing the tubular part, each end of the expandable sleeve being connected with a connection part which is connected with the tubular part, a space between the inner face of the sleeve and the tubular part, and an element arranged in connection with the sleeve, the element having a first part and a second part both of which extend around the inner face, the first part of the element being fastened to the inner face.

Annular barrier

The present invention relates to a downhole tool for guiding a device into a side track of a borehole, the tool having a tool axis and comprising a tool housing connected to an energy source. The invention further relates to a method for moving the downhole tool into a side track.

Downhole guiding tool

A drilling tool () for drilling downhole, comprising a drilling head () in connection with a first portion () of the drilling tool, a driving unit () for driving the drilling head and the first portion forward in a longitudinal movement while drilling, and a feed control () for controlling the longitudinal movement of the drilling head.

Drilling tool with feed control

Drilling tool () for drilling a well downhole where fluid is surrounding the tool and where the tool has a housing () and is connected to an electrical conducting means, such as a wireline. The drilling tool has a drilling head () and a fluid cleaner () for removal of elements, such as debris and formation pieces, from the fluid while drilling downhole. The fluid cleaner has a chamber () and a filter () within the chamber for separation of the elements from the fluid. The tool further comprises a pump () for pumping the fluid into the chamber through an inlet () in the drilling head () and through the filter before entering the well again. Furthermore, the tool comprises a driving unit for driving the pump and the drilling head.

Drilling tool with fluid cleaner

A drilling head, method of drilling, and use of the drilling head, for reboring a stuck valve or drilling into the formation downhole and, in particular a drilling tool having a drilling head and a driving unit. The drilling head includes a hole saw beside a drill bit for cutting out a piece from the stuck valve. A drilling system includes the drilling tool and a driving tool for moving the drilling tool downhole.

Growing community of inventors

Helsingør, Denmark

Thomas Sune Andersen