Innovation Energy As

Dsolve As

Schlumberger Technology Corporation

Carlos J Delgado

Marcus Fathi

Astrid Bjørgum

Nils-Inge Nilsen

Ashley Bernard Johnson

Walter David Aldred

Frank F Espinosa

Michael Paul Barrett

Pål Viggo Hemmingsen

Bjarne Bugten

William Bertram

There is provided a method for preparing a wellbore for insertion of a barrier, the method comprising: providing a section of tubing or formation within the wellbore having a modified internal surface that is shaped such that a region adjacent the modified internal surface can be filled with barrier material and the barrier material can solidify to interlock with and be anchored by the modified internal surface.

Method for preparing a wellbore

A downhole tool, for removing sections of metal tubing, said downhole tool comprising at least one conductive element being arranged to corrode a section of metal tubing using an electrolytic process, said conductive element being made of electric conductive material, an apparatus to establish a connection to the metal tubing, and a source of electrical power.

Downhole tool

The present invention relates to a downhole tool (), for removing sections of metal tubing, comprising: at least one conductive element () being arranged to corrode a section of metal tubing using an electrolytic process, said conductive element () being a tube or a pipe which is made of electric conductive material, an apparatus () to establish a connection to the metal tubing (), and a milling apparatus with cutting or abrasive elements () arranged to remove byproducts from the electrolytic process. The invention also relates to a modular downhole tool (), comprising an elongated main shaft () with several modules for insertion in a wellbore.

A drive mechanism is described for moving/controlling objects/mechanisms/systems coupled with a drillstring and/or pipe. The drive mechanism may be axially arranged on a drillstring or pipe, compact, capable of fine control and delivering high torque or the like and may be electrically and/or hydraulically powered. The drive mechanism may comprising a driving member comprising a plurality of drivers linearly translatable with respect to the driving member, each driving member having at their ends a male engaging portion and an associated driven member, comprising a plurality of female receiving portions adapted to receive a male engaging portion, the arrangement being such that linear translation of a driver causes its engaging portion to engage with a female receiving portion and the action of the engaging portion produces a reaction in the receiving portion causing displacement of the driven member in a direction other than that of the translatable driver.

Drive mechanism

Growing community of inventors

Trondheim, Norway

Carlos J Delgado