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1. 发明授权

US12037858B2 Downhole positive displacement pump 有权
公开(公告)号：US12037858B2
公开(公告)日：2024-07-16
申请号：US17487660
申请日：2021-09-28
申请人： Welltec A/S
发明人： Jørgen Hallundbæk
IPC分类号： E21B23/04 , E21B23/06 , E21B33/127 , E21B43/10 , F04B17/03 , F04B47/06 , F04B53/10 , F04B53/16
CPC分类号： E21B23/0419 , E21B23/06 , E21B33/127 , E21B33/1275 , E21B43/103 , F04B17/03 , F04B47/06 , F04B53/10 , F04B53/16
摘要： A downhole double-acting positive displacement pump has a housing with a first end 1 and a second end, the housing having a pump inlet, a pump outlet arranged closer to the second end, a first chamber arranged in the housing and having a first outlet in fluid communication with the pump outlet, a first piston movable in the first chamber for pressing fluid out of the pump outlet, and a drive to reciprocate the first piston. The first piston divides the first chamber into a first and second chamber parts, the first chamber part having the first outlet and a first inlet, a first valve being arranged at the first outlet, a second valve being arranged in the first inlet. The second chamber part has a second outlet in fluid communication with the pump outlet and a second inlet, a third valve being arranged in the second outlet, and a fourth valve being arranged in the second inlet. The downhole pump further has a control unit for controlling an output of the drive into the movement of the first piston in the first direction or the second direction.

2. 发明授权

US11982152B2 Wireline plug system 有权
公开(公告)号：US11982152B2
公开(公告)日：2024-05-14
申请号：US17704530
申请日：2022-03-25
申请人： WELLTEC A/S
发明人： Christian Krüger
IPC分类号： E21B33/13 , E21B33/12
CPC分类号： E21B33/13 , E21B33/1208
摘要： The present invention relates to a wireline plug system for setting a permanent plug in a well for plugging and abandonment, comprising a wireline pumping tool comprising a pump powered from surface via a wireline, the pump comprising a pump inlet and a pump outlet, the wireline pumping tool having a first end connected to the wireline and a second end, a plugging and abandonment plug comprising a first plug end and an opening in the first plug end, and an engagement tool for releasably connecting the plug to the wireline pumping tool, the engagement tool having a through-bore fluidly connecting the opening in the first plug end with the pump outlet, wherein the plugging and abandonment plug comprises a tubular metal part and an expandable metal sleeve surrounding and connected to an outer face of the tubular metal part, the tubular metal part having an expansion aperture fluidly connecting an inside of the tubular metal part and a cavity between the expandable metal sleeve and the tubular metal part. The invention also relates to a wireline plug setting method for setting a permanent plug in a well for plugging and abandonment on the wireline.

3. 发明授权

US11859459B2 Downhole tool 有权
公开(公告)号：US11859459B2
公开(公告)日：2024-01-02
申请号：US17982773
申请日：2022-11-08
申请人： WELLTEC A/S
发明人： Jørgen Hallundbæk
IPC分类号： E21B31/16 , E21B10/26 , E21B10/40 , E21B10/64 , E21B31/107 , E21B31/20
CPC分类号： E21B31/16 , E21B10/26 , E21B10/40 , E21B10/64 , E21B31/107 , E21B31/20
摘要： A downhole tool, for removing a restriction in a well tubular metal structure having a wall and an inner diameter, has a tool axis and a tool body having a first part and a second part, an electrical motor arranged in the first part for rotating a rotatable shaft, and a core bit arranged in the second part and having a first end connected with the rotatable shaft and a second end having a cutting edge. The second part of the downhole tool further includes a locator for locating the rim section, the locator being rotable with the core bit until the locator locates the rim section and a threshold value is reached.

4. 发明申请

US20230064823A1 DOWNHOLE TOOL 有权
公开(公告)号：US20230064823A1
公开(公告)日：2023-03-02
申请号：US17982773
申请日：2022-11-08
申请人： WELLTEC A/S
发明人： Jørgen HALLUNDBÆK
IPC分类号： E21B31/16 , E21B10/26 , E21B10/40 , E21B10/64 , E21B31/107 , E21B31/20
摘要： A downhole tool, for removing a restriction in a well tubular metal structure having a wall and an inner diameter, has a tool axis and a tool body having a first part and a second part, an electrical motor arranged in the first part for rotating a rotatable shaft, and a core bit arranged in the second part and having a first end connected with the rotatable shaft and a second end having a cutting edge. The second part of the downhole tool further includes a locator for locating the rim section, the locator being rotable with the core bit until the locator locates the rim section and a threshold value is reached.

5. 发明授权

US11542810B2 Downhole tool for determining laterals 有权
公开(公告)号：US11542810B2
公开(公告)日：2023-01-03
申请号：US16872737
申请日：2020-05-12
申请人： WELLTEC A/S
发明人： Jørgen Hallundbæk , Jimmy Kjærsgaard-Rasmussen
IPC分类号： E21B47/09 , E21B4/18 , E21B41/00 , E21B47/085 , E21B47/092
摘要： A downhole tool for determining laterals in a borehole wall or a borehole casing, comprising a tool housing extending along a longitudinal axis and having a circumference perpendicular to the longitudinal axis and a plurality of sonic transceivers. Each sonic transceiver transmitting sonic signals from the housing and receiving sonic signals reflected from the borehole wall or borehole casing in a predefined angular segment. The sonic transceivers are arranged along the circumference of the tool housing having a mutual distance and are capable of transmitting sonic signals radially away from the tool housing in an entire central angle of 360 degrees towards the borehole wall or borehole casing. During a pulse time, one sonic transceiver transmits a sonic signal in the predefined angular segment of that sonic transmitter, and one sonic transceiver, during a subsequent echo time, receives a reflected sonic signal from the borehole wall or borehole casing.

6. 发明申请

US20220298893A1 DOWNHOLE PUMPING TOOL 有权
公开(公告)号：US20220298893A1
公开(公告)日：2022-09-22
申请号：US17699313
申请日：2022-03-21
申请人： WELLTEC A/S
发明人： Abderrahmane FARAOUN
IPC分类号： E21B41/00 , E21B27/02
摘要： The present invention relates to the use of a downhole pumping tool for removing a hydrate formation forming a hydrate plug in a tubing in a well, the downhole pumping tool comprising a pump having a pump inlet and a pump outlet, an electric motor for driving the pump, a wireline for powering the electric motor, the pump having a first end arranged closest to the wireline and a second end facing the hydrate plug, wherein the pump inlet is arranged in the second end, and the pump inlet contacts a first face of the hydrate plug, the pump providing suction to remove at least part of a plurality of gas molecules from the hydrate plug for dissolving at least part of the hydrate formation. The invention also relates to a hydrate removal method for removing hydrate formation forming a hydrate plug in a tubing.

7. 发明申请

US20220275708A1 DOWNHOLE WIRELINE TOOL STRING 有权
公开(公告)号：US20220275708A1
公开(公告)日：2022-09-01
申请号：US17582383
申请日：2022-01-24
申请人： WELLTEC A/S
发明人： Peder Løkke BORG
IPC分类号： E21B37/00 , E21B41/00 , E21B23/01
摘要： The present invention relates to a downhole wireline tool string for removing material of a component in a well downhole by an annular grinding area, the downhole wireline tool string having an axial extension and a centre tool axis, a front end and a top end connectable to a wireline, comprising an electric motor powered through the wireline for providing rotational output, a tool section for anchoring the downhole wireline tool string inside a well tubular metal structure, an operational tool rotated by the rotational output and defining the front end and an end surface arranged axially opposite the wireline and comprising an annular wall having a circumference and a wall thickness defined by an inner wall radius and an outer wall radius from the centre tool axis, wherein the operational tool comprises at least a first grinding section and a second grinding section arranged at the end surface, the first grinding section having an inner face being arranged at a first distance from the centre tool axis, the first distance being smaller than the inner wall radius, and the second grinding section having an outer face being arranged at a second distance from the centre tool axis, the second distance being greater than the outer wall radius.

8. 发明授权

US11414935B2 Intervention system and method for operating an intervention system 有权
公开(公告)号：US11414935B2
公开(公告)日：2022-08-16
申请号：US16599348
申请日：2019-10-11
申请人： WELLTEC A/S
发明人： Carsten Nesgaard
IPC分类号： E21B17/20 , E21B17/00 , H02G11/02 , E21B47/13 , E21B23/00 , E21B23/14 , E21B47/12 , H02G9/06
摘要： An intervention system is provided. The intervention system comprises a cable being configured to be lowered into a wellbore, said cable having an inner tube enclosing one or more electrical conductors, and an outer tube surrounding the inner tube. The intervention system further comprises a downhole tool being connected to a distal end of the cable and being configured to pull the cable into the wellbore.

9. 发明授权

US11299948B2 Downhole method for removal of tubular metal structure 有权
公开(公告)号：US11299948B2
公开(公告)日：2022-04-12
申请号：US16735940
申请日：2020-01-07
申请人： Welltec A/S
发明人： Christian Krüger
IPC分类号： E21B23/01 , E21B29/00 , E21B33/12 , E21B33/138
摘要： A method for removal of at least part of a first well tubular metal structure in a borehole of an existing well having a top, the first well tubular metal structure having a longitudinal extension and a first end closest to the top. The method includes inserting a downhole wireline tool having an anchor section and a machining device in the first well tubular metal structure, positioning the downhole wireline tool opposite the first section of the first well tubular metal structure so that the machining device is positioned 8-12 metres from the first end of the first well tubular metal structure and the anchor section is arranged above the machining device, and anchoring the downhole wireline tool opposite the first section by activating the anchor section to abut an inner surface of the first well tubular metal structure.

10. 发明授权

US11236588B2 Method and apparatus for verifying a well model 有权
公开(公告)号：US11236588B2
公开(公告)日：2022-02-01
申请号：US15126649
申请日：2015-03-17
申请人： WELLTEC A/S
发明人： Jens Barfoed , Malene Ulleriks Nielsen
IPC分类号： E21B47/00 , E21B47/07 , E21B47/12 , E21B41/00
摘要： 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 to sense present well characteristics when submerged, receiving tool data corresponding to the presently sensed well characteristics from the tool, said tool data representing downhole properties relevant to downhole operation and performance of the tool, and performing a confirmation check by comparing the well data of the model with the tool data. Furthermore, the present invention relates to a well model verifying apparatus, to a well model verifying system and to a computer readable storage medium.

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