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Welltec A s patents


Recent patent applications related to Welltec A s. Welltec A s is listed as an Agent/Assignee. Note: Welltec A s may have other listings under different names/spellings. We're not affiliated with Welltec A s, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "W" | Welltec A s-related inventors


 new patent  Annular barrier with shunt tube

The present invention relates to an annular barrier for isolating a production zone, the annular barrier having a first end and a second end, comprising: a tubular metal part for mounting as part of a well tubular metal structure, the tubular metal part having an outer face, an expandable metal... Welltec A s

Downhole drilling system

The present invention relates to a downhole drilling method for drilling a well in a formation having a formation pressure. The downhole drilling method comprises providing a drill string having a first part and a second part, the second part being arranged closer to a top of the well than... Welltec A s

Downhole straddle assembly

15... Welltec A s

Downhole operational tool

The present invention relates to a downhole operational tool for moving a tool part between a retracted position and a projected position in a well. The downhole operational tool comprises a tool body having an axial extension; the tool part being movable perpendicularly to the axial extension between the retracted... Welltec A s

Downhole power supply device

The present invention relates to a downhole power supply device for supplying power in situ to a power consuming device arranged in a well, comprising a fuel cell producing electricity and water and having a fuel inlet, an oxidising inlet, an electric output and a water outlet, a fuel container... Welltec A s

Downhole completion device with liquid

The present invention relates to a downhole completion device configured to be mounted as part of a well tubular metal structure. The downhole completion device comprises a housing enclosing a closed space, an electrical component arranged in the space inside the housing, the housing being filled with a liquid having... Welltec A s

Annular barrier and annular barrier system

The present invention relates to an annular barrier system for expanding an annular barrier in an annulus between a well tubular structure and an inside wall of a borehole downhole. The annular barrier system comprises an annular barrier having a tubular part for mounting as part of the well tubular... Welltec A s

Downhole completion system

Downhole completion system (100) arranged in a borehole, comprising a production casing (2) having an axial extension with an opening (4) for providing fluid communication between the borehole and the inside of the casing, a sleeve (5) arranged at least partly movably along or rotatably around the axial extension for... Welltec A s

Annular barrier with closing mechanism

The present invention relates to a downhole annular barrier to be expanded in an annulus between a well tubular structure and a wall of a borehole or another well tubular structure downhole in order to provide zone isolation between a first zone having a first pressure and a second zone... Welltec A s

Geothermal energy extraction subterranean system

The present invention relates to a geothermal energy extraction subterranean system for extracting heat from a subterranean formation, comprising an injection well comprising a first well tubular metal structure arranged in a first borehole providing a first annulus therebetween and extending from surface into the subterranean formation and being configured... Welltec A s

Downhole wireless transfer system

The present invention relates to a downhole wireless transfer system (1) for transferring signals and/or power, comprising a production casing (2) arranged in a borehole (3), defining an annulus (4) therebetween, the production casing having an inner face (5) and an outer face (6), a downhole tool (7) comprising a... Welltec A s

Downhole valve system

The present invention relates to a downhole valve system (1) for controlling inflow of a fluid from and to a formation (100), comprising a casing (2) having an inner surface (3), an outer diameter (ODc) and an inner diameter (IDc), and a cross section (Ac) defined by the inner diameter,... Welltec A s

Downhole device and downhole system

The present invention relates to a downhole device for being moved downwards in a well by fluid to assist stimulation of a production zone of the well, the well comprising a well tubular structure having a first opening and a first movable sleeve arranged opposite the first opening, and the... Welltec A s

Downhole completion system

The present invention relates to a completion system for connecting several screens into a well tubular structure mounted from base pipe sections. The completion system comprises a first screen assembly and a second screen assembly, each screen assembly comprising a base pipe section mounted as part of the well tubular... Welltec A s

Annular barrier and downhole system for low pressure zone

The present invention relates to an annular barrier for being expanded in an annulus between a well tubular structure and a wall of a borehole downhole for isolating a first zone from a second zone in the annulus between the well tubular structure and the wall of the borehole, the... Welltec A s

Downhole system

The present invention relates to a downhole system for completing a well. The downhole system comprises a downhole well tubular structure having a wall and being configured to be arranged in a borehole of the well and a first annular barrier for being expanded in an annulus between the downhole... Welltec A s

Downhole wireline machining tool string

The present invention relates to a downhole wireline machining tool string for increasing an inner diameter of a well tubular metal structure in a well. The downhole wireline machining tool string has a longitudinal axis and comprises a rotatable tool part comprising a machining tool having a first end part,... Welltec A s

A downhole well system

The present invention relates to a downhole well system for producing hydrocarbon-containing fluid from a reservoir downhole, comprising a well tubular structure having an inside, a first and a second annular barrier for isolating an annulus outside the well tubular structure, each annular barrier comprising a tubular part adapted to... Welltec A s

Annular barrier completion with inductive system

The present invention relates to a downhole system for completing a well with wireless power and communication downhole, comprising: a first well tubular structure, a second well tubular structure arranged partly inside the first well tubular structure, a first electrical unit comprising a first inductive coupler part and being arranged... Welltec A s

Downhole completion system

The present invention relates to a downhole completion system comprising a production casing installed in a bore-hole and an annular barrier system to be expanded in an annulus between a production casing and a wall of a borehole or another well tubular structure downhole for providing zone isolation between a... Welltec A s

Downhole stimulation system

The present invention relates to a downhole stimulation system for stimulating production. The system has first and second inflatable packers (6) for isolating a production zone (10), the packers being inflated through aperture (15), a sliding sleeve valve (17) arranged between the two packers, the sleeve having an opening (19)... Welltec A s

Downhole sensor system

The present invention relates to a downhole sensor system for measuring a pressure of a fluid downhole in a well, comprising a well tubular structure having an inside and being arranged in a borehole with a wall and an annulus defined between the well tubular structure and the wall of... Welltec A s

A downhole flow control device

The present invention relates to a downhole flow control device for controlling a flow of a fluid from a borehole into a well tubular structure and/or from the well tubular structure into the borehole, comprising a base tubular having an axial axis and adapted to be mounted as part of... Welltec A s

Dual function downhole tool

The present invention relates to a multifunctional downhole wireline tool for fluid sampling and fluid jetting in a well downhole, comprising a pump having a pump opening, and a fluid chamber for collecting a sample of fluid or storage of fluid to be jetted, the fluid chamber having a first... Welltec A s

Downhole expandable metal tubular

The present invention relates to a downhole expandable metal tubular having an axial extension, to be expanded in a well downhole to abut against an inner face of a casing or a borehole, comprising a first section having a first outer diameter, two circumferential projections having a second outer diameter... Welltec A s

Downhole string for drilling through a low pressure zone

The present invention relates to a downhole string (1) for drilling through a low pressure zone (Zlow) in a formation (45) in a well (3), comprising a drawdown casing (2) having a first end (4) closest to a top (5) of the well and a second end (6), and an... Welltec A s

Downhole flow device

The present invention relates to a downhole flow device for controlling a flow of fluid between an annulus and an inner bore of a well tubular metal structure arranged in a borehole. The downhole flow device comprises a tubular part comprising a first opening and an axial extension, and a... Welltec A s

A verifying a well model

The present invention relates to a method for verifying a well model, comprising the steps of receiving stored well data of an existing well, forming a model based on the received well data, submerging a tool for performing a work task into the existing well, wherein the tool is arranged... Welltec A s

Downhole completion system sealing against the cap layer

A cementless downhole completion system including an annular barrier with a tubular metal part being mounted as part of a first well tubular metal structure arranged in a borehole in a formation and the annular barrier is arranged opposite an impermeable cap layer in the formation. A downhole completion system... Welltec A s

A downhole production casing string

The present invention relates to a downhole production casing string for insertion in a borehole in a reservoir, the downhole production casing string having a first end nearest a top of the borehole and a second end furthest away from the top, the downhole production casing string extending along a... Welltec A s








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