公开(公告)号：US11624256B2

公开(公告)日：2023-04-11

申请号：US17534078

申请日：2021-11-23

申请人： WELLTEC A/S

发明人： Tomas Sune Andersen

IPC分类号： E21B33/127 ,  E21B33/128

摘要： A downhole packer assembly includes a body part, an expandable tubular packer element surrounding the body part, and a first end and a second end of the expandable tubular packer element are fixedly connected with the body part, providing an expandable space fillable with liquid during expansion, and a metal sleeve surrounding the expandable tubular packer element. A restriction unit has an axially movable part movable between a first axial position in which the axially movable part at least partly overlaps the expandable tubular packer element and a second axial position in which the axially movable part has been axially displaced in relation to the body part away from the expandable tubular packer element.

公开(公告)号：US11286768B2

公开(公告)日：2022-03-29

申请号：US15925917

申请日：2018-03-20

申请人： WELLTEC A/S

发明人： Paul Hazel

IPC分类号： E21B47/06 ,  E21B47/12 ,  E21B47/003 ,  E21B47/005 ,  E21B47/07 ,  E21B33/13 ,  E21B36/00 ,  E21B36/02

摘要： The present invention relates to a downhole plug and abandonment system comprising a well tubular structure having an inside and a wall and being arranged in a borehole, a first plug arranged in the well tubular structure for sealing off a lower part of the well tubular structure, a second plug arranged in the well tubular structure at a distance and above the first plug isolating a confined space having a space pressure between the first plug and the second plug, wherein an abandonment device is arranged in the confined space, the abandonment device comprising: a unit configured to increase the space pressure, a sensor configured to measure a temperature and/or a pressure in the confined space, and a device communication module configured to receive an input from the sensor and to communicate signals from the abandonment device. Furthermore, the present invention relates to a downhole plug and abandonment method.

公开(公告)号：US20210040807A1

公开(公告)日：2021-02-11

申请号：US17076997

申请日：2020-10-22

申请人： WELLTEC A/S

发明人： Christian Krüger ,  Sven Karsten Jensen

IPC分类号： E21B29/00 ,  E21B27/00 ,  E21B29/10 ,  E21B37/02

摘要： 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, a second end part, a diameter and a circumference, and a stationary tool part comprising a driving unit configured to rotate the rotatable tool part and powered through the wireline. The machining tool comprises a body having an outer face, and the machining tool further comprising a plurality of inserts, each insert having a length along the longitudinal axis, and the inserts projecting from the outer face of the body and being distributed around the circumference. Furthermore, the present invention relates to a machining tool for increasing an inner diameter of a well tubular metal structure in a well or cutting out a piece, e.g. in a downhole valve.

公开(公告)号：US10344745B2

公开(公告)日：2019-07-09

申请号：US14130944

申请日：2012-07-04

申请人： Jørgen Hallundbæk ,  Peter Gråbæk

发明人： Jørgen Hallundbæk ,  Peter Gråbæk

IPC分类号： F04B1/047 ,  E21B43/12 ,  F04B47/06 ,  F04B47/00

摘要： The present invention relates to a downhole hydraulic pump for providing fluid pressure during downhole operations, comprising a pump housing, a cam shaft rotatably arranged in the pump housing and having a longitudinal spin axis, the cam shaft comprising a shaft and a cam lobe arranged on the shaft, a radially arranged piston having a housing end and a cam end, a piston housing arranged in the pump housing, an inlet valve arranged in an inlet in the piston housing, an outlet valve arranged in an outlet in the piston housing, and a piston spring arranged in the pump housing for moving the piston away from the piston housing, wherein the piston housing is rotatably connected to the pump housing enabling rotation of the piston housing around a piston housing rotation axis parallel to the longitudinal spin axis of the cam shaft.

公开(公告)号：US10337323B2

公开(公告)日：2019-07-02

申请号：US15316949

申请日：2015-06-10

申请人： WELLTEC A/S

发明人： Christian Krüger ,  Peter Gråbæk

IPC分类号： E21B23/00 ,  E21B27/02 ,  E21B49/08

摘要： A wireline tool for sampling/jetting fluid in a well includes a pump with an opening, and a chamber for collecting/jetting fluid, the chamber having first and second ends. The chamber includes first and second pistons dividing the chamber into first, second and third chamber sections. The first and second pistons are attached to respective piston rods, and the rods are supported by respective supports. A first spring is provided between the first piston and its support and another spring is provided between the second piston and its support. When the pump operates, the pistons are forced in one direction, hence activating spring forces of the springs and allowing fluid to flow from one chamber section to another chamber section.

公开(公告)号：US10030500B2

公开(公告)日：2018-07-24

申请号：US13701243

申请日：2011-05-31

申请人： Jorgen Hallundbæk

发明人： Jorgen Hallundbæk

IPC分类号： E21B47/01 ,  E21B47/10 ,  E21B47/00 ,  G01V1/50

CPC分类号： E21B47/01 ,  E21B47/0003 ,  E21B47/10 ,  G01V1/50

摘要： A wellbore surveillance system obtains fluid reservoir information data, such as the position and amount of gas, oil and/or water, while draining hydrocarbons from an oil or gas field via a casing in a wellbore in a formation. The casing has a vertical part near a top of the casing and an inner face, the system comprising a first sensor for measuring a content of gas, oil and/or water in the formation, and a second sensor for measuring a content of gas, oil and/or water in the formation.

公开(公告)号：US09970248B2

公开(公告)日：2018-05-15

申请号：US15161444

申请日：2016-05-23

申请人： WELLTEC A/S

发明人： Jørgen Hallundbæk

IPC分类号： E21B23/00 ,  E21B23/06 ,  E21B23/14 ,  E21B43/10 ,  E21B33/127

CPC分类号： E21B23/00 ,  E21B23/06 ,  E21B23/14 ,  E21B33/127 ,  E21B43/10 ,  E21B43/103

摘要： A downhole system includes an upper casing that is connected to a lower casing via an annular barrier that expands upon application of pressurized fluid. The lower casing may also include additional annular barriers to fasten the lower casing relative to the borehole.

公开(公告)号：US09963952B2

公开(公告)日：2018-05-08

申请号：US14385539

申请日：2013-03-27

申请人： WELLTEC A/S

发明人： Jørgen Hallundbæk ,  Lars Stæhr

IPC分类号： E21B33/127

CPC分类号： E21B33/127 ,  E21B33/1277

摘要： A downhole annular barrier with an axial extension having an outer surface facing an inner surface of an outer structure has a tubular part, an expandable part, and at least one annular sealing element. The annular sealing element is connected with the expandable part and has an axial length along the axial extension of the downhole annular barrier which is less than 50% of a length of the downhole annular barrier along the axial extension of the downhole annular barrier. The annular sealing element has a spring element.

公开(公告)号：US09835023B2

公开(公告)日：2017-12-05

申请号：US14439316

申请日：2013-10-30

申请人： WELLTEC A/S

发明人： Jørgen Hallundbæk ,  Ricardo Reves Vasques ,  Paul Hazel

IPC分类号： E21B47/00 ,  E21B33/127 ,  E21B43/10 ,  E21B47/10 ,  E21B33/12 ,  E21B33/14 ,  E21B34/06 ,  E21B43/25 ,  E21B47/06

CPC分类号： E21B47/0006 ,  E21B33/12 ,  E21B33/127 ,  E21B33/14 ,  E21B34/06 ,  E21B43/10 ,  E21B43/103 ,  E21B43/25 ,  E21B47/06 ,  E21B47/1025

摘要： The present invention relates to a barrier testing method for testing a production casing in a borehole (4). The method is applied before initiating production in a well and comprises the steps of connecting a drill pipe (10) with a first end (20) of a first production casing having annular barriers (17), which annular barriers (17) comprise a tubular part forming part of the casing and an expandable sleeve circumferenting the tubular part, thereby defining an expandable space; inserting the drill pipe (10) and the first production casing (3) via a drill head (6) arranged at a top (7) of the well into an intermediate casing (11) extending in a first part (18) of the borehole (4) closest to the top of the well and at least part of the first production casing into a second part (19) of the borehole; sealing a second end (21) of the first production casing (3); pressurizing the first production casing (3) from within and expanding one or more of the expandable sleeves (22) of the annular barriers (17) to abut a wall of the borehole; pressurizing the first production casing (3) from within to a predetermined pressure; and testing the first production casing (3) after expansion by measuring if the predetermined pressure is kept constant during a predetermined time period. Furthermore, the invention relates to a completion system for oil production from a well and to an oil production facilitated by the method barrier testing method.

公开(公告)号：US09726005B2

公开(公告)日：2017-08-08

申请号：US14131750

申请日：2012-07-11

申请人： Jørgen Hallundbæk ,  Mathias Francke

发明人： Jørgen Hallundbæk ,  Mathias Francke

IPC分类号： G01V3/12 ,  G01R33/02 ,  E21B47/09 ,  G01B7/00 ,  G01V3/26

CPC分类号： E21B47/0905 ,  G01B7/003 ,  G01V3/26

摘要： The invention relates to a positioning method for determining a position of a downhole tool moving at a velocity in a casing in a well, comprising the steps of measuring a magnitude and/or direction of a magnetic field by means of a first sensor several times over a time period while moving along a first part of the casing manufactured from metal, determining a manufacturing pattern of the casing along the first part from the measurement measuring a magnitude and/or direction of a magnetic field by means of the first sensor several times over a time period while moving along a second part of the casing manufactured from metal, determining the velocity of the tool along the second part, adjusting the determined velocity of the tool along the second part based upon the manufacturing pattern.