Shell Oil Comapny

Enventure Global Technology Inc.

Enventure Global Technologies, LLC

Shell Internationale Research Maatschappij, B.v.

Antonius Leonardus Maria Wubben

Djurre Hans Zijsling

Tino Walter Van Der Zee

Wilhelmus Christianus Maria Lohbeck

Serge Mathieu Roggeband

Walter Stam

Erik Van Dalfsen

Remmelt Bouma

David Paul Brisco

Petrus Cornelis Kriesels

Daniele Di Crescenzo

Egbert Jan Van Riet

Pieter Van Nieuwkoop

Wissam Assaad

Franz Marketz

Feitze Veenstra

Jan Harm Van Der Wal

Johannes Louis Leonardus Hessels

Matthew Jay Jabs

Erik Marco Nijveld

Jelle Hofstee

A retrievable self-energizing top anchor tool with a central energizing mandrel disposed around a central tool bore and a set of anchor segments distributed around a circumference of the central energizing mandrel, each having one or more wedge surfaces facing toward the central tool bore and corresponding to and engaging inclined surfaces of the central energizing mandrel. The tool is releasable by relative upward movement of a release sub against a release sub stop arranged within the central tool bore. A release mechanism houses one or more pre-loaded release spring members locked with a release locking mechanism. When unlocked the release spring members exert a retracting bias force on the central energizing mandrel in downward direction along the longitudinal axis relative to the set of anchor segments. This downward movement of the central energizing mandrel causes a radially inward movement of the set of anchor segments.

Retrievable self-energizing top anchor tool

An annular space surrounding an expandable well tubular () is sealed by: &#x2014;a concave seal pusher assembly () with concave pusher elements comprising buckling joints () of which assembly () a first end is secured at a selected first location () of the outer surface of the unexpanded well tubular (); &#x2014;an annular elastomeric sealing ring () arranged with an inwardly tapered first end thereof against an outwardly tapered second end () of the concave seal pusher assembly (); &#x2014;a set of staggered and overlapping steel support strips () arranged around a second end of the sealing ring () and connected at one end thereof to a selected second location () of the outer surface of the unexpanded tubular (); &#x2014;expanding and thereby shortening the tubular () to push the inwardly tapered end of the sealing ring over the outwardly tapered end () of the seal pusher assembly () and buckling the staggered strips () against the outer surface () of the annular space surrounding the expanded tubular () to compress the sealing ring () and seal off the annular space.

Method and system for sealing an annulur space around an expanded well tubular

A hydraulically actuated Jack And Pull (JAP) tubular expansion tool string comprises:

Method and system for inhibiting cement deposition in a jack and pull (JAP) expansion assembly

A to be expanded tubular () can be locked to a previously installed host casing () using a self energizing top anchor (SETA) tool. This SETA tool has an anchoring section with a set of anchoring slips (), and a centralizer which is connected to the body of the anchoring section. The anchoring slips () engage the host casing () once an expansion cone () presses the tubular against the shoulder of the centralizer. The SETA tool is further provided with a guide nose () to which a force transmission sub () is connected.

Method and system for locking an upper end of an expanded tubular within a host casing

A system for radially expanding a tubular element () in an underground borehole () comprises an expansion string () extending into the tubular element () and including an expander () and a jack device () for pulling the expander () through the tubular element () so as to radially expand the tubular element (). The jack device () is provided with an anchor () having at least one slip element () adapted to be radially moved against the inner surface of the tubular element (). A cage () is positioned above the tubular element (), which cage () is surrounded by a cylindrical wall and adapted to receive the anchor () and to be radially expanded by the anchor () against said cylindrical wall.

Expanding a tubular element in a wellbore

A hybrid push and pull method for expanding a tubular in a wellbore utilizes an expansion assembly with a sealed and another, optionally expandable, cone, wherein during at least part of the expansion process the sealed cone is moved up through the tubular by a combination of push and pull forces and the push force is generated by pumping fluid at an elevated pressure into a space between the bottom plug and the expansion assembly. This allows staged expansion of the tubular in a hard rock formation and/or of a tubular surrounded by a hardened cement lining and/or of a pair of partially overlapping nested tubular ends.

Hybrid push and pull method and system for expanding well tubulars

An anchoring system for anchoring a tool () in a downhole tubular element () comprises: &#x2014;an anchor () having a central body () connected to, or integrally formed with, the tool (); &#x2014;a slip element () radially movable relative to the central body () between a retracted and an expanded position against the inner surface of the tubular element (), &#x2014;a primary spring () for moving the slip element to the expanded position; &#x2014;a control device comprising a stop member () against which the slip element () is pushed by the primary spring (); and &#x2014;a secondary spring () acting on the stop member () to move each slip element () to its retracted position.

Anchor system and method for use in a wellbore

In an assembly for lowering and expanding a tubular element in a borehole on an expansion string, at least part of the weight of the tubular element is transmitted to the expansion string via an internal upset and a support protruding from an outer surface of the expansion string below the internal upset.

Assembly and method for creating an expanded tubular element in a borehole

In an expansion assembly (), an expandable bottom plug () is arranged below a primary expander () for expanding a tubular element (). The expandable bottom plug () includes an expandable tubular clad element with a sealing section for sealing the expanded clad element to a lower portion of the expanded tubular element (), and an anchoring section for anchoring the expanded clad element to the lower portion of the expanded tubular element. A secondary expander () is provided for radially expanding the clad element in the lower portion of the expanded tubular element by axial movement of the secondary expander through the clad element.

Assembly and method for expanding a tubular element

A system for sealing an expandable tubular connection () in a wellbore comprises an annular resilient seal () arranged in an annular groove () defining a section () of reduced wall thickness of an inner tubular element (), which section () is subject to surplus expansion induced by an expansion cone such that, in the expanded state of the inner tubular element (), the annular groove () has a wave-shaped profile thereby compressing the annular seal () against an outer tubular element ().

System and method for creating a sealing tubular connection in a wellbore

The invention provides a system for lining a wellbore. The system comprises an expandable tubular element arranged in the wellbore, the tubular element having a first end part and a second end part whereby the second end part extends into a tubular wall located in the wellbore. An expander is arranged to radially expand the tubular element by movement of the expander through the tubular element in a direction from the first end part to the second end part, said direction defining an expansion direction. The system further comprises an anchor arranged to anchor said second end part to the tubular wall in a manner that the anchor substantially prevents movement of said second end part in the expansion direction and allows movement of said second end part in the direction opposite to the expansion direction.

System for lining a wellbore

A system and method for lining a section of a wellbore with an expandable tubular element. The system comprises an elongate drill string having a force multiplier near a lower end thereof, which is housed within the expandable tubular element. An expander for expanding the tubular element is arranged at a lower end of the force multiplier. Anchoring means are provided at the exterior of the tubular element for anchoring the tubular element in the wellbore. Pulling the expander through the expandable tubular using the force multiplier may be combined with pulling the drill string upwards. A sudden drop of the hydraulic pressure in the force multiplier drops will confirm fixation of the anchoring means in the wellbore wall.

Method and system for lining a section of a wellbore with an expandable tubular element

The present invention provides a system for anchoring an expandable tubular to a borehole wall. The system comprises a support member having a first end fixed relative to the outside of the tubular and a second end comprising a ramping surface. An anchor member has a first end fixed relative to the outside of the tubular and a second end extending toward the support member, said second end being movable relative to the outside of the tubular. Said support member includes a ramp surface that tapers in the direction of said anchor member. Expansion of the portion of the expandable tubular between the first support end and the first anchor end causes the axial device length to shorten, wherein the difference in length is sufficient to cause the second anchor end to move radially outward and engage the borehole wall as a result of engagement with said ramping surface.

System and method for anchoring an expandable tubular to a borehole wall

A system for anchoring an expandable tubular to a borehole wall comprises a support member having a first end fixed relative to the outside of the tubular and a second end comprising a ramping surface. An anchor member has a first end fixed relative to the outside of the tubular and a second end extending toward the support member, the second end being movable relative to the outside of the tubular. The support member includes a ramp surface that tapers in the direction of the anchor member. Expansion of the portion of the expandable tubular between the first support end and the first anchor end causes the axial device length to shorten, wherein the difference in length is sufficient to cause the second anchor end to move radially outward and engage the borehole wall as a result of engagement with the ramping surface.

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Rijswijk, Netherlands

Antonius Leonardus Maria Wubben