E2tech Limited

Baker Hughes Corporation

Alan Mackenzie

Douglas James Murray

Aubrey Clifton Mills

Sebastian J Wolters

David Andrew Anderton

Christopher Callaway

Radially expanding a tubular such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. One or more anchoring devices, which may be radially offset, are used to substantially prevent the tubular from moving during expansion thereof.

Apparatus and methods for radially expanding a tubular member

Apparatus and methods for radially expanding a tubular such as a drill pipe, liner, casing or the like. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. In certain embodiments, one or more anchoring devices are used to substantially prevent the tubular from moving during expansion thereof.

Apparatus and method for radially expanding a tubular member

Aspects of the invention relate to apparatus and methods for remedial and repair operations downhole. Certain embodiments of apparatus include a lightweight expandable member () that can be radially expanded to increased its inner and outer diameters using an inflatable element (). The lightweight member () can be used to repair a fautly safety vavle flapper () for example. The invention also relates to lateral tubular adapter apparatus and a method of hanging a lateral from a cased borehole.

Method and apparatus for expanding tubing downhole

A cement diverter system and method for cementing a junction in a wellbore wherein a cementing operation and reverse circulating operation are achievable in a single run in the hole.

Cement diverter system for multilateral junctions and method for cementing a junction

A method and apparatus to provide a large bore hook hanger system incorporating sand exclusion at a junction in a multilateral wellbore includes the running of a lateral liner having an expandable sleeve positioned thereon to bridge a milled window from the lateral borehole to the primary borehole, expandable sleeve including a pre-machined window and a hook to hang the liner from the primary borehole. The hook further acts to center the pre-machined window in the expandable sleeve to provide access to the primary wellbore. The expandable sleeve is preferably covered on its outer surface with an elastomeric material and is outwardly concentric to an expandable packer for run-in. Once the expandable sleeve is positioned at the appropriate location in the junction, the expandable packer is inflated thus permanently deforming the expandable sleeve into contact with the open hole of the lateral borehole thereby preventing sand or gravel ingress to the primary borehole.

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Aberdeen, United Kingdom

Alan Mackenzie