公开(公告)号：US20170145779A1

公开(公告)日：2017-05-25

申请号：US15309858

申请日：2015-05-08

申请人： WELLTEC A/S

发明人： Paul HAZEL ,  Ricardo Reves VASQUES

IPC分类号： E21B33/124 ,  E21B47/12 ,  E21B47/14 ,  E21B47/06

CPC分类号： E21B33/1243 ,  E21B33/127 ,  E21B47/06 ,  E21B47/124 ,  E21B47/14

摘要： 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 first zone having a first pressure and a second zone having a second pressure of the borehole, the downhole completion system comprising an annular barrier comprising a tubular metal part adapted to be mounted as part of the production casing, the tubular metal part having an outer face, an expandable metal sleeve surrounding the tubular metal part and having an inner sleeve face facing the tubular metal part and an outer sleeve face facing the wall of the borehole, each end of the expandable metal sleeve being connected with the tubular metal part, and an annular space between the inner sleeve face of the expandable metal sleeve and the tubular metal part, the annular space having a space pressure, wherein the downhole completion system further comprises a sensor device which is in communication with the first zone and/or second zone, respectively, the sensor device being adapted to measure the first pressure of the first zone and the second pressure of the second zone for verifying the zone isolation. The present invention also relates to a verification method for verifying zone isolation and to a monitoring method for monitoring a condition of a well.

公开(公告)号：US20170138177A1

公开(公告)日：2017-05-18

申请号：US15322877

申请日：2015-06-29

申请人： WELLTEC A/S

发明人： Paul HAZEL

IPC分类号： E21B47/06 ,  E21B34/06 ,  E21B47/12 ,  E21B33/127

CPC分类号： E21B47/06 ,  E21B33/127 ,  E21B34/06 ,  E21B47/01 ,  E21B47/12

摘要： 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 the borehole, a sensor unit having a pressure unit sensor and being arranged in connection with the well tubular structure, the pressure unit sensor being adapted to measure a pressure of the fluid in the inside of the well tubular structure and/or in the annulus, the sensor unit further comprising a power supply and a communication module, a downhole tool comprising a power supply and a communication module for communication with the sensor unit, wherein the downhole tool further comprises a pressure tool sensor adapted to measure a pressure of the fluid inside the well tubular structure substantially opposite the pressure unit sensor for comparison with the pressure measured by the pressure unit sensor. The present invention also relates to a measuring method, calibrating methods and an isolation testing method.

公开(公告)号：US20160312584A1

公开(公告)日：2016-10-27

申请号：US15103613

申请日：2014-12-12

申请人： WELLTEC A/S

发明人： Paul HAZEL

IPC分类号： E21B41/00 ,  E21B33/14 ,  E21B34/06 ,  E21B43/14 ,  E21B43/26 ,  E21B43/10 ,  E21B7/06 ,  E21B33/12

CPC分类号： E21B41/0035 ,  E21B7/061 ,  E21B33/12 ,  E21B33/14 ,  E21B34/06 ,  E21B43/105 ,  E21B43/14 ,  E21B43/26

摘要： The present invention relates to a completion method for completing a uniform inner bore downhole completion system in a reservoir in a formation, comprising the steps of drilling a hole in the formation, inserting a surface casing having an inner surface casing diameter, cementing an outer face of the surface casing to the hole, inserting a drilling head in the surface casing, drilling a main bore extending from the surface casing, the main bore having a first part and a second part, the second part comprising an end of the main bore, and the main bore having an inner main bore diameter which is substantially the same as the inner surface casing diameter of the surface casing, retracting the drilling head from the main bore and the surface casing, inserting a lower production casing in the second part of the main bore, the lower production casing having annular barriers and an inner diameter, setting at least one of the annular barriers of the lower production casing, inserting the drilling head into the first part of the main bore below the surface casing, drilling a lateral bore from the first part of the main bore, the lateral bore having an inner lateral bore diameter which is substantially equal to the inner main bore diameter, retracting the drilling head from the lateral bore, inserting a lateral production casing fully in the lateral bore, the lateral production casing having annular barriers and an inner diameter which is substantially equal to the inner diameter of the lower production casing providing a uniform inner bore completion having the same inner diameter in all production casings, enabling service also in the lateral production casing while service of the main production casing is performed, setting at least one of the annular barriers of the lateral production casing, inserting a main production casing in the first part of the main bore, so that the main production casing is fluidly connected with the lower production casing, the main production casing having annular barriers and an inner diameter which is substantially equal to the inner diameter of the lower production casing, setting the annular barriers of the main production casing, and providing an opening in the main production casing opposite the lateral production casing fluidly connecting the lateral production casing with the main production casing, so that the lower production casing, the main production casing and the lateral production casing is in fluid communication. Furthermore, the present invention relates to a downhole completion system for enhancing hydrocarbon-containing fluid production in a reservoir.

公开(公告)号：US20170328170A1

公开(公告)日：2017-11-16

申请号：US15668784

申请日：2017-08-04

申请人： WELLTEC A/S

发明人： Jørgen HALLUNDBÆK ,  Paul HAZEL

IPC分类号： E21B33/12 ,  E21B33/128 ,  E21B34/14 ,  E21B43/10

CPC分类号： E21B33/1277 ,  E21B33/1208 ,  E21B33/128 ,  E21B33/1285 ,  E21B34/10 ,  E21B34/14 ,  E21B43/103 ,  E21B43/105

摘要： 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 structure, the annular barrier further comprising an expandable sleeve surrounding the tubular part, at least one end of the expandable sleeve being fastened in a fastening means of a connection part in the tubular part. The annular barrier system also comprises a tool for expanding the expandable sleeve by letting a pressurised fluid through a passage in the tubular part into a space between the expandable sleeve and the tubular part.

公开(公告)号：US20170145801A1

公开(公告)日：2017-05-25

申请号：US15321382

申请日：2015-06-22

申请人： WELLTEC A/S

发明人： Paul HAZEL ,  Ricardo Reves VASQUES

IPC分类号： E21B43/26 ,  E21B33/127 ,  E21B34/10 ,  E21B47/00 ,  E21B43/267 ,  E21B33/124

CPC分类号： E21B43/26 ,  E21B23/00 ,  E21B33/1243 ,  E21B33/127 ,  E21B34/10 ,  E21B34/14 ,  E21B43/267 ,  E21B47/00 ,  E21B2034/007

摘要： 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) to provide fluid communication between the inside of the well tubular and the production zone. In operation the inflatable device is set downstream of the inflation aperture of the lower packer, the well is pressurized to move the tool downstream to open the sliding sleeve valve, whereafter fracturing fluid with proppants having a size which is smaller than that of the sliding sleeve opening (19) and larger than the packer inflation aperture (15), is pumped downhole using a displacement means such as a piston element.

公开(公告)号：US20170145777A1

公开(公告)日：2017-05-25

申请号：US15358940

申请日：2016-11-22

申请人： WELLTEC A/S

发明人： Ricardo Reves VASQUES ,  Paul HAZEL

IPC分类号： E21B33/127 ,  E21B43/14 ,  E21B47/12 ,  E21B41/00 ,  E21B43/26 ,  E21B17/00 ,  E21B47/00

CPC分类号： E21B33/127 ,  E21B17/003 ,  E21B17/026 ,  E21B41/0035 ,  E21B43/14 ,  E21B43/26 ,  E21B47/00 ,  E21B47/06 ,  E21B47/065 ,  E21B47/122 ,  E21B2023/008 ,  E21B2034/007

摘要： 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 on an outer face of the first well tubular structure and electrically connected with an electrical conductor, an annular barrier for being expanded in an annulus between a first well tubular structure and a wall of a borehole or another well tubular structure downhole for providing zone isolation between a first zone having a first pressure and a second zone, the annular barrier comprising: a tubular metal part for mounting as part of the first well tubular structure, the tubular metal part having a first expansion opening, an axial extension and an outer face, an expandable sleeve surrounding the tubular metal part and having an inner face facing the tubular metal part and an outer face facing the wall of the borehole, a first connection part and a second connection part configured to connect a first end and a second end, respectively, of the expandable sleeve with the tubular metal part, and an annular space between the inner face of the expandable sleeve and the tubular metal part, wherein the annular barrier further comprises the electrical conductor extending on the outside of the tubular metal part and within the expandable sleeve from the first connection part to the second connection part, and a second electrical unit comprising a second inductive coupler part and being arranged inside the first well tubular structure and arranged outside the second well tubular structure and configured to abut an inner face of the well tubular structure, wherein the first electrical unit transfers power and/or communication to the second electrical unit. Finally, the present inventor relates to an annular barrier.

公开(公告)号：US20180274356A1

公开(公告)日：2018-09-27

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 ,  E21B33/13 ,  E21B47/00 ,  E21B36/00 ,  E21B36/02

CPC分类号： E21B47/06 ,  E21B33/13 ,  E21B36/00 ,  E21B36/02 ,  E21B47/0003 ,  E21B47/0005 ,  E21B47/065 ,  E21B47/12

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：US20170101847A1

公开(公告)日：2017-04-13

申请号：US15311924

申请日：2015-05-19

申请人： WELLTEC A/S

发明人： Paul HAZEL

IPC分类号： E21B33/12 ,  E21B33/127 ,  E21B21/00 ,  E21B33/14

CPC分类号： E21B33/1212 ,  E21B7/20 ,  E21B17/05 ,  E21B21/003 ,  E21B33/127 ,  E21B33/1277 ,  E21B33/13 ,  E21B33/14 ,  E21B34/06 ,  E21B43/103 ,  E21B2021/006 ,  E21B2034/007

摘要： 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 operational tool (8) connected to the second end of the drawdown casing, wherein the downhole string further comprises an annular barrier (10) having an expandable metal sleeve (11) surrounding the drawdown casing, each end of the expandable metal sleeve being connected with the drawdown casing, the expandable metal sleeve being adapted to contact a wall (16) of a borehole (17) or another casing so that the drawdown casing can rotate and slide in relation to the annular barrier after expansion of the expandable sleeve. Furthermore, the present invention relates to a downhole system and to a downhole method.

公开(公告)号：US20160369603A1

公开(公告)日：2016-12-22

申请号：US15182950

申请日：2016-06-15

申请人： WELLTEC A/S

发明人： Paul HAZEL

IPC分类号： E21B43/10 ,  E21B47/10 ,  E21B43/26 ,  E21B43/11 ,  E21B33/12 ,  E21B17/00

CPC分类号： E21B43/10 ,  E21B17/00 ,  E21B33/12 ,  E21B33/124 ,  E21B43/08 ,  E21B43/11 ,  E21B43/14 ,  E21B43/26 ,  E21B47/10

摘要： A redressing method for arranging an inner production casing within an existing production casing in order to re-establish production of hydrocarbon-containing fluid in a well, comprises providing the inner production casing to having a substantially constant inner diameter, the inner production casing comprising spaced first and second annular barriers. Each annular barrier has a tubular metal part and an expandable metal sleeve surrounding the tubular metal part. Each barrier has an inner face facing the tubular metal part and an outer face facing an inner wall of the existing production casing. The inner production casing has an outer unexpanded diameter which is smaller than the first inner diameter of the existing production casing. The existing production casing is redressed by introducing the inner production casing into the existing production casing, arranging the first annular barrier on one side of the first inflow section and the second annular barrier on the other side of the inflow section, thereby isolating an inflow of fluid from the first inflow section, encapsulating the first inflow section of the existing production casing by expanding the expandable metal sleeves of the first annular barrier and the second annular barrier, thereby isolating the first inflow section.

摘要翻译： 一种用于在现有生产套管内布置内部生产套管以便重新建立井中含烃流体生产的补救方法，包括提供内部生产套管以具有基本恒定的内径，内部生产套管包括间隔开的 第一和第二环形屏障。 每个环形阻挡件具有管状金属部件和围绕管状金属部件的可扩展金属套筒。 每个屏障具有面向管状金属部分的内表面和面向现有生产套管内壁的外表面。 内部生产套管的外部未膨胀直径小于现有生产套管的第一内径。 通过将内部生产套管引入现有的生产套管中来对现有的生产套管进行修复，在第一流入部分的一侧和流入部分的另一侧上设置第一环形阻挡件，从而隔离流入部分 来自第一流入部分的流体，通过膨胀第一环形阻挡件和第二环形阻挡件的可膨胀金属套筒来封装现有生产壳体的第一流入部分，从而隔离第一流入部分。

公开(公告)号：US20180106124A1

公开(公告)日：2018-04-19

申请号：US15567477

申请日：2016-04-29

申请人： WELLTEC A/S

发明人： Paul HAZEL

IPC分类号： E21B33/127 ,  E21B29/00

摘要： The present invention relates to a downhole tubular assembly configured to be mounted as part of a well tubular structure in a borehole of a well having a top. The downhole tubular assembly comprises a well metal tubing configured to be mounted as part of the well tubular structure, the well metal tubing having a longitudinal extension, a tubing length along the longitudinal extension, an inner diameter and an outer diameter defining a wall, an inner face and an outer face. The downhole tubular assembly further comprises a tubular metal receptacle having an inner receptacle face and an outer receptacle face, a receptacle length and a first part closest to the top of the well, and having an inner receptacle diameter larger than the outer diameter of the well metal tubing, and having a second part extending from the first part towards the well metal tubing, The tubing length is larger than the receptacle length, and the wall of the well metal tubing extends inside the tubular metal receptacle along the entire length of the tubular metal receptacle, and the second part of the tubular metal receptacle is fastened to the outer face of the well metal tubing, thereby closing the tubular metal receptacle in one end and defining an annular space between the tubular metal receptacle and the well metal tubing. Furthermore, the invention relates to a well tubular structure for being arranged in a borehole in a well and to a downhole system configured to be arranged in a borehole of a well. Finally, the invention relates to a structure replacement method for replacing at least part of the well tubular structure of a downhole system.