RU2810258C2 - Tool for overhaul of well, well system containing tool for overhaul of well, and method for repairing equipment for completion of well - Google Patents

Abstract

FIELD: overhaul of oil and gas production wells.

SUBSTANCE: proposed tool is designed to cut into the tubing of a well completion equipment having a tip, a casing in which the tubing is located, and a packer. The tool contains a longitudinal axis, a first and a second end, with the first end located closer to the top when immersed in the well completion equipment, a pipe cutting module containing a housing, a first module part, a second module part and a cutting edge rotatable around the longitudinal axis when extended relative to the housing to cut into the wall of the tubing from the inside to separate the first part of the tubing, closest to the top, from the second part. The tool contains a pipe piercing module containing a retractable piercing element configured to create a hole in the wall of the first part for fluid communication between the annulus and the internal volume of the tubing to obtain control of the well by circulating a fluid between them. The penetration module is located closer to the first end of the tool than to the pipe cutting module. The tool contains a placement instrument for installing a plug inside the second part of the tubing, located in connection with the pipe cutting module so that the pipe cutting module is located between the pipe punching module and the placement instrument, while the tool also contains a rotary connection between the second part of the pipe cutting module and the placement instrument.

EFFECT: safety of repairs increases, time costs decrease, and hydrocarbon production increases.

14 cl, 6 dwg

Description

The present invention relates to a well workover tool for cutting into the tubing of a well completion equipment having an apex, the well completion equipment comprising a casing in which the tubing is located and a production packer disposed between casing pipe and tubing to form an annular space above the production packer. The invention also relates to a well system and a repair method.

When a reservoir in a hydrocarbon producing well is depleted, attempts are made to optimize the well completion equipment to extract more of the remaining hydrocarbon-containing fluid from the reservoir.

One method is to introduce gas lift valves to the top of the well completion equipment by replacing the tubing with new tubing having gas lift valves at the top of the pipe. Another method is to insert a high-velocity lifting string into the tubing. Both methods are performed using heavy, expensive equipment such as a drilling rig, but after the fall in oil prices there was a need for a less expensive method of optimizing wells.

US 2018087352 discloses a combined cutting tool and piercing tool that are simultaneously lowered into a borehole, such as a wellbore.

The objective of the present invention is to completely or partially overcome the above-mentioned disadvantages and shortcomings of the prior art. More specifically, the objective is to provide an improved well system for increasing hydrocarbon production that is less expensive than prior art systems without compromising well safety.

The above objects, as well as numerous other objects, advantages and features apparent from reading the following description, are realized in the solution according to the present invention by means of a workover tool for cutting into the tubing of a well completion equipment having an apex, wherein the well completion equipment comprises a casing in which the tubing is located, and a production packer located between the casing and the tubing to form an annular space above the production packer, wherein the well workover tool contains:

- longitudinal axis;

- a first end of the tool and a second end of the tool, wherein the first end of the tool is located closer to the top when immersed in the well completion equipment;

- a pipe cutting module containing a housing and a cutting edge configured to rotate around a longitudinal axis when extended relative to the housing for cutting from the inside into the wall of the tubing pipe to separate the first part of the tubing pipe, closest to the top, from the second part of the tubing pipe ;

wherein the well workover tool further comprises a pipe piercing module containing a retractable piercing element configured to create at least one hole in the wall of the first part to create fluid communication between the annulus and the internal volume of the tubing to obtain control well by circulating fluid between them, and the penetration module is located closer to the first end of the tool projectile than to the pipe cutting module.

By having a pipe piercing module containing a retractable piercing element and a pipe cutting module in one workover tool, cutting the tubing and making the alignment hole can be accomplished in one run. And due to the presence of the hole, fluid such as heavy fluid can circulate through the hole between the annulus and the internal volume of the tubing, and the well control during the replacement process will be ensured, and the main part of the replacement operation can be carried out by means of a tool rig for performing well work or well workover, resulting in significant savings in rig time, significantly reducing cost without compromising well safety. Thus, the first part of the tubing can be replaced with replacement tubing having gas lift valves, and the gas lift process can be started to extract more oil from the reservoir.

The workover tool may be a non-charged well workover tool, i.e. tool projectile for overhaul of a well without charges.

Additionally, the availability of a chargeless workover tool provides a safer method for replacing the first part of the tubing string. In the oil industry, safety is becoming an increasingly important factor, both to ensure the safety of personnel and to prevent oil leaks.

The workover tool described above may further comprise a placement tool for installing a plug within the second tubing portion, the placement tool being positioned in connection with the pipe cutter module so that the pipe cutter module is positioned between the pipe punching module and the placement tool.

When a well is abandoned, it must be plugged and as much completion equipment removed as possible to create a safe plug and abandonment (P&A). By having the placement tool positioned as part of the workover tool at the front of the workover tool, all operations of installing the plug, drilling the fluid circulation hole to maintain well control, and cutting the tubing to remove the first part from the well can be accomplished in one descent. Thus, the bulk of the R&A operation can be performed by a well intervention or workover tool, resulting in significant savings in rig time, significantly reducing cost without compromising well safety.

Additionally, the placement tool may be configured to install and detach the plug in the well.

The placement tool can also function as an anchor tool through the use of a plug.

The workover tool described above may further include a plug that forms the second end of the tool as the tool is run into the tubing.

In addition, the pipe cutting module may include a cutting arm having a first arm end rotatably connected to the housing and a second arm end having a cutting edge.

Additionally, the pipe cutting module may comprise a first module part and a second module part located closest to the wellhead, wherein the second module part has a cutting arm, and the second module part is rotatably connected to the first module part.

Also, the workover tool may include a rotatable connection between the second part of the pipe cutting module and the placement tool.

The retractable piercing element may comprise a drill head or a piercing portion.

In addition, the pipe piercing module may cause the retractable piercing element to rotate to create at least one hole.

Additionally, the retractable piercing element may include a drilling head, and the pipe piercing module may allow rotation of the drilling head.

The pipe punching module may be located above the pipe cutting module such that the pipe punching module is located closer to the wellhead.

In addition, the pipe punching module can be located above the pipe cutting module at a predetermined distance.

Additionally, the pipe piercing module may include a motor and a gear for rotating the retractable piercing element.

Additionally, the retractable piercing element may have an extended position and a retracted position.

In addition, the pipe piercing module may include a hydraulic cylinder with a piston for extending the retractable piercing element and a spring for retracting the retractable piercing element, the spring being compressed by the piston when the retractable piercing element is extended. The retractable piercing element may form part of the piston.

The workover tool described above may further include a cable such that the workover tool is a cable-launched workover tool.

The workover tool described above is not part of a permanent structure in the well, i.e. is not part of the well completion equipment and therefore the workover tool described above is a workover tool designed to perform work on a well.

In addition, the workover tool described above may further include a logging module for determining the position of the tool.

The present invention also relates to a well system comprising:

- wellbore;

- casing located in the wellbore;

- a tubing located at least partially inside the casing;

- a production packer located between the casing and the tubing to form an annular space above the production packer; And

- a well workover tool described above, designed to be located inside the tubing.

Also, the cutting edge of the pipe cutting module can be located opposite or above the production packer.

Additionally, the tool can include a drive module/downhole tractor.

The well workover tool may further comprise a placement tool for installing a plug within the second tubing portion, the placement tool being positioned in connection with the pipe cutting module such that the pipe cutting module is positioned between the pipe punching module and the placement tool.

The well workover tool may further comprise a plug.

The well system described above may further comprise a pump module that circulates a heavy fluid down the annulus through the at least one opening and into the tubing.

The well system described above may further comprise equipment configured to pull a first portion of tubing from the wellbore and/or configured to insert replacement tubing to replace the first portion.

The equipment can also be configured to pull out the production packer.

Additionally, the replacement tubing may include a tubing packer.

Additionally, the tubing packer may contain an expansion

coupling.

The downhole system can also be used for plugging and abandonment so that after the first piece of tubing is removed, cement is placed on top of the plug.

The present invention also relates to a repair method for repairing well completion equipment having a top, wherein the well completion equipment includes a casing in which tubing is located, and a production packer located between the casing and the tubing to form an annular space above the production packer, wherein the workover tool contains a cutting edge configured to rotate around a longitudinal axis during extension relative to the housing for cutting from the inside into the wall of the tubing to separate the first part of the tubing closest to the top, from the second part of the tubing;

- a tool for workover of the well is placed in the tubing pipe, wherein the tool for workover of the well contains a cutting edge configured to rotate around the longitudinal axis when extended relative to the housing for cutting from the inside into the wall of the tubing pipe to separate the first part of the pump-compressor pipe - the compressor pipe closest to the top, from the second part of the tubing pipe;

- at least one hole is made above the production packer in the first part by means of a pipe punching module;

- provide circulation of heavy fluid through at least one opening;

- cutting the wall of the tubing pipe above the plug located inside the second part of the tubing pipe, separating the first part and the second part of the tubing pipe;

- pull out the tool from the pump-compressor pipe; And

- pull out the first part of the tubing pipe from the casing.

Additionally, the plug may be installed inside the second tubing portion by means of a placement module, wherein the placement tool is positioned in connection with the pipe cutting module such that the pipe cutting module is located between the pipe punching module and the placement tool.

The present invention also relates to an abandonment method for abandoning a well completion equipment having a top, the well completion equipment comprising a casing in which tubing is located, and a production packer located between the casing and the tubing with forming an annular space above the production packer, wherein the tool for workover of the well contains a cutting edge configured to rotate around the longitudinal axis in the process of extension relative to the housing for cutting from the inside into the wall of the tubing pipe to separate the first part of the tubing pipe closest to apex, from the second part of the tubing;

- a tool for workover of the well is placed in the tubing pipe, wherein the tool for workover of the well contains a cutting edge configured to rotate around the longitudinal axis when extended relative to the housing for cutting from the inside into the wall of the tubing pipe to separate the first part of the pump-compressor pipe - the compressor pipe closest to the top, from the second part of the tubing pipe;

- at least one hole is made above the production packer in the first part by means of a punching module;

- provide circulation of heavy fluid through at least one opening;

- cutting the wall of the tubing pipe above the plug located inside the second part of the tubing pipe, separating the first part and the second part of the tubing pipe;

- pull out the tool from the pump-compressor pipe;

- pull out the first part of the tubing pipe from the casing; And

- place cement over the plug.

Finally, pulling the first piece of tubing out of the casing and placing cement over the plug can be done simultaneously.

The invention and its many advantages are described in more detail below with reference to the accompanying schematic drawings, in which, for purposes of illustration, certain non-limiting embodiments of the invention are shown, and in which:

- in fig. 1 is a partial cross-sectional view of a workover tool in a well completion equipment;

- in fig. 2 is a partial cross-sectional view of the well completion equipment of FIG. 1, in which the tubing is partially divided into a first part and a second part, and the tool socket is removed;

- in fig. 3 is a partial cross-sectional view of the well completion equipment of FIG. 2, into which a replacement tubing is inserted to replace the first part;

- in fig. 4 is a partial cross-sectional view of other well completion equipment in which the workover tool has a placement tool and a plug;

- in fig. 5 is a view of another workover tool having a placement tool and a plug; And

- in fig. 6 is a view of another workover tool having a drive module, such as a downhole tractor, and a logging module.

All drawings are highly schematic and not necessarily to scale, showing only those parts necessary to explain the invention while other parts are not shown or are shown without explanation.

In fig. 1 shows a well workover tool 1 configured to be inserted into the tubing 2 of the well completion equipment 100. Well completion equipment 100 includes a casing 4 in which tubing is located such that the tubing extends partially below the casing. A production packer 5 is located between the casing and the tubing to form an annular space 6 above the production packer and thus extending towards the top 3 of the well completion equipment. The well workover tool is configured to cut into the tubing 2 to divide the tubing 2 into a first portion 15 closest to the top and a second portion 16 so that the first portion can be removed from the well and can a replacement tubing be introduced to replace the first part. The workover tool includes a first end 8 of the tool and a second end 9 of the tool. The first end of the tool is positioned toward the apex when suspended from the apex by a wireline and plunged into the completion equipment. The tool 1 for workover of the well additionally contains a pipe-cutting module 10, containing a housing 11 and a cutting edge 12, configured to rotate around the longitudinal axis 7 of the tool when extended relative to the housing for cutting from the inside into the wall 14 of the tubing pipe to separate the first part 15 from the second part 16 of the tubing. The tool projectile 1 for well workover additionally contains a pipe piercing module 20, containing a retractable piercing element 21, configured to create at least one hole 22 in the wall of the first part to create a fluid communication between the annulus and the internal volume 23 of the pump-compressor pipes with obtaining control of the well by circulating fluid between them. The piercing module 20 is located closer to the first end 8 of the tool than the cutting module 10, and the piercing module 20 is located adjacent to the cutting module so that the holes are made in the first part 15, and not in the second part 16, which remains in the well, so that the heavy fluid may circulate to replace fluid directly above the production packer to provide well control before cutting into the tubing.

By allowing fluid, such as heavy fluid, to circulate between the annulus and the internal volume of the tubing, the bulk of the replacement operation can be performed by the downhole tool, thereby saving a significant amount of rig time, which significantly reduces cost without compromising well safety. Thus, the first portion of tubing can be replaced with replacement tubing having gas lift valves 85 (as shown in FIG. 3), and the gas lift valves can be activated to extract more oil from the reservoir.

The plug 18 shown in FIG. 4 may be installed by a workover tool because the tool may include a placement tool 17 for installing the plug 18 within the second tubing portion. The placement tool 17 is positioned in connection with the pipe cutting module such that the pipe cutting module is located between the pipe punching module and the placement tool. Thus, the plug forms the second end of the tool as the tool is lowered into the tubing. Plug 18 from Fig. 1 may also be provided in the second tubing part during the previous operation.

As shown in FIG. 1, the extendable piercing member 21 of the pipe piercing module 20 makes an opening 22 in the tubing wall so that fluid can circulate to maintain well control before the cutting edge 12 of the pipe cutting module 10 cuts into the tubing. As shown in FIG. 2, the cutter module was cut into the tubing, separating the first part from the second part, after which the tool was withdrawn so that the first part could be pulled out of the well and a replacement tubing 60 having a tubing packer 61 could be inserted. -compressor pipe, as shown in Fig. 3. As shown in FIG. 3, the tubing packer 61 has an expandable metal sleeve 62 surrounding a tubular metal portion 63 installed as part of the replacement tubing 60. The expandable metal sleeve 62 is permanently deformed by the passage of fluid into the annular space between the expandable metal sleeve and the tubular metal part 63 through an opening in the tubular metal part. The annular barrier may have a valve system in fluid communication with the hole and the annulus, for example, to, in a first position, allow fluid to pass into the annulus, and, in a second position, to close the hole or fluid communication between the hole and the annulus. The valve system in the second position may provide fluid communication between the annulus and the annulus to equalize pressure therebetween.

Although not shown, the replacement tubing may have an internal diameter that is smaller than the diameter of the first tubing portion. By having a smaller diameter, the replacement tubing reduces flow area and increases flow velocity to allow fluids to be recovered from the wellbore/reservoir.

As shown in FIG. 4, the well workover tool further includes a placement tool 17 configured to install and detach plug 18 in the well. Removal of the plug may be accomplished before the workover tool moves upward to make the hole and thereafter cuts the tubing into a first portion and a second portion. Thus, the plug may be positioned at a distance below the tubing from the production packer, even, for example, directly above the liner hanger 81. Removal of the plug may also be accomplished during a second operation, also called a second run, if the workover tool is connected to the wellhead via cable 40, since pulling out the first portion of the tubing prevents the workover tool from being left behind. in the well and disconnect the plug after pulling out the first part. If the workover tool is not wireline, the workover tool may remain in the well while replacing the first piece of tubing with replacement tubing, and therefore the workover tool may disconnect the plug before removing the workover tool. workover tool from the well and therefore also perform plug disconnection during the same first run.

The placement tool may function as an anchor tool through the plug such that the placement tool does not become detached from the plug when the pipe punching module makes at least one hole and when the pipe cutting module cuts into the tubing.

Pipe cutting module from Fig. 5 includes a cutting arm 24 having a first arm end 25 rotatably connected to the body 11 and a second arm end 26 including a cutting edge that contacts the wall when the cutting arm is extended in a radial direction. The pipe cutting module contains a first module part 31 and a second module part 32. The second module portion 32 includes a cutting arm 24 and is rotatably connected to the first module portion such that the second module portion rotates the cutting arm and cutting edge relative to the remainder of the housing 11. Thus, the pipe cutting module includes a motor for rotating the first module portion relative to the second portion. module, and the pipe cutting module includes a hydraulic cylinder for moving the cutting arm between a retracted and extended position about a pivot point in the housing.

As shown in FIG. 5, the workover tool 1 may include a rotatable connection 33 between a second module portion 32 of the pipe cutting module 10 and the placement tool 17 such that the second module portion can be rotated when installing the plug by the placement tool while still connected to the plug.

As shown in FIG. 5, the retractable piercing element includes a drilling head 34 that makes holes by rotating the head and drilling through the wall of the tubing. Further, the pipe piercing unit 20 includes a motor 38 and a gear 41 for rotating the retractable piercing member 21. Moreover, the retractable piercing member has an extended position and a retracted position. The pipe piercing module contains a hydraulic cylinder 37 with a piston 39 for extending the retractable piercing element, and a spring 42 for retracting the retractable piercing element. The spring is compressed by the piston as the piston moves and extends the extendable piercing element. The retractable piercing element forms the first piston portion such that the first piston portion is retracted from the hydraulic cylinder and the second piston portion remains in the hydraulic cylinder. Thus, the hole is made without the use of explosives, therefore, the workover tool is a workover tool without explosives or a workover tool without a charge.

As shown in FIG. 6, the retractable piercing element includes a piercing part 35 that makes holes by moving it through the wall of the tubing. The punching part has an extended position and a retracted position, and a hydraulic cylinder moves the punching part between the extended and retracted positions. Thus, the tubing is separated without the use of explosives, therefore, the workover tool is a workover tool without explosives or a workover tool without a charge.

Due to the presence of a cutting module and a piercing module in one workover tool and a piercing module located at a certain distance d (shown in Fig. 1) above the cutting module, the hole is made in a safe manner above the cutting/severing line, i.e. a cut/line where the first part is separated from the second part of the tubing. The tool can be mounted so that the hole is made at a certain distance from the separation line.

The workover tool further includes a logging module 36 for determining the position of the tool, as shown in FIG. 5. Thus, the workover tool can determine the position of the production packer, etc. more precisely before performing operations so that the workover tool does not accidentally cut the production packer.

In some embodiments of the well completion equipment, it is also possible to cut the production packer and remove the production packer while pulling the first portion of the tubing. In this case, the cutting edge of the pipe cutting module is located opposite the production packer or above it.

The logging module 36 may be a tool that uses magnets and/or magnetometers to locate individual elements in the well completion equipment to determine a specific position.

The well system 200 shown in FIG. 1, contains a wellbore 28, a casing 4 located in the wellbore, a tubing 2 located at least partially inside the casing, and a production packer 5 located between the casing and the tubing to form an annular space 6 above the production packer as described above. The well system further includes a workover tool 1 configured to be positioned inside the tubing to divide the tubing into a first part 15 and a second part 16 in order to remove the first part and replace it. Before cutting into the tubing 2, the tubing piercing module 20 makes at least one hole 22. The well system 200 further includes a pump module 52 that circulates heavy fluid down the annulus 6 through at least one hole 22 into the tubing chamber. pipe 2 before removing the first part. The pump is located at a wellhead on the surface or seabed.

The well system further includes equipment 53 configured to pull at least a first portion of tubing from the wellbore 28 and/or insert replacement tubing to replace the first portion. The equipment 53 is also configured to retract the production packer if necessary and if the production packer is suitable for release by cutting into the packer.

The downhole system can also be used for plugging and abandonment so that after the first piece of tubing is removed, cement is placed on top of the plug.

As shown in FIG. 3, the well completion equipment may include a liner 82 suspended from a liner hanger 81. The liner includes an annular barrier 70 that has an expandable metal sleeve 71 surrounding a tubular metal portion 73 mounted as part of the liner 82. The expandable metal sleeve 71 is permanently deformed by the passage of fluid into the annular space 72 between the expandable metal sleeve 71 and the tubular metal portion 73 , for example, through an opening 75 in a tubular metal part 73.

Thus, the well completion equipment repair is performed by placing a workover tool in the tubing, making at least one hole above the production packer in the first part by means of a pipe punching module, allowing heavy fluid to circulate through at least one hole, cutting into the wall of the tubing string above a plug located inside the second tubing portion, pulling the tool from the tubing, and pulling the first tubing portion from the casing.

Thus, by placing the workover tool in the tubing, the well system makes at least one hole above the production packer in the first part by means of a punching module, circulates heavy fluid through at least one hole, and cuts into the wall tubing string above the plug located inside the second part of the tubing, pull the tool from the tubing, pull the first part of the tubing out of the casing and place cement on top of the plug. Pulling the first piece of tubing out of the casing and placing cement on top of the plug can be done simultaneously.

By fluid or wellbore fluid is meant any type of fluid that may be present in an oil or gas well, such as natural gas, oil, drilling fluid, crude oil, water, and so on. Gas refers to any type of gas mixture present in a well, whether completed or uncased, and oil refers to any type of petroleum mixture, such as crude oil, oily fluid, and so on. Thus, gas, oil and water may contain other elements or substances that are not gas, oil and/or water, respectively.

Casing, tubing, replacement tubing, liner, or downhole tubular metal structure refers to any type of pipe, tubular member, conduit, liner, tubing string, etc., used in a well in the production of oil or natural gas.

In the event that it is not possible to completely immerse the workover tool into the tubing/casing, a drive module 51, such as a downhole tractor, can be used to push the tool to the desired position in the well. The downhole tractor may have extendable arms 54 having wheels 55, the wheels engaging the inner surface of the casing to propel the tractor and tool forward in the casing. A downhole tractor is any type of driven tool capable of pushing or pulling tools in a downhole, such as a Well Tractor®.

Although the invention has been described above in terms of preferred embodiments, it is obvious to one skilled in the art that modifications to the invention are possible without departing from the scope of legal protection of the invention as defined by the following claims.

Claims (29)

1. A well workover tool (1) designed for cutting into the tubing (2) of a well completion equipment (100) having an apex (3), the well completion equipment comprising a casing (4), in in which the tubing is located, and a production packer (5) located between the casing pipe and the tubing to form an annular space (6) above the production packer, wherein the tool for workover of the well contains: - longitudinal axis (7); - a first end (8) of the tool and a second end (9) of the tool, the first end of the tool being located closer to the top when immersed in the well completion equipment; - pipe cutting module (10), containing a body (11), the first part (31) of the module, the second part (32) of the module and a cutting edge (12), configured to rotate around the longitudinal axis when extended relative to the body for cutting from the inside into the wall ( 14) tubing for separating the first tubing portion (15) closest to the top from the second tubing portion (16); wherein the well workover tool further comprises a pipe piercing module (20) containing a retractable piercing element (21) configured to create at least one hole (22) in the wall of the first part to create fluid communication between the annulus and internal volume (23) of the tubing with obtaining control of the well by circulating fluid between them, and the punching module is located closer to the first end of the tool tool than to the pipe-cutting module, and the tool tool for well workover additionally contains a placement tool (17) for installing a plug (18) inside the second tubing portion, wherein the placement tool is positioned in connection with the pipe cutting module so that the pipe cutting module is positioned between the pipe punching module and the placement tool, wherein the workover tool includes a rotatable connection ( 33) between the second part (32) of the pipe cutting module (10) and the placement tool (17). 2. The projectile according to claim 1, additionally containing a plug that forms the second end of the tool projectile when lowering the tool into the tubing. 3. The projectile according to claim 1 or 2, in which the pipe cutting module contains a cutting arm (24) having a first end (25) of the arm connected to the body with the possibility of rotation, and a second end (26) of the arm having a cutting edge. 4. The projectile according to any one of paragraphs. 1-3, in which the pipe cutting module comprises a first module part (31) and a second module part (32), wherein the second module part has a cutting arm, and the second module part is rotatably connected to the first module part. 5. The projectile according to any one of paragraphs. 1-4, in which the retractable piercing element includes a drill head (34) or a piercing part (35). 6. The projectile according to any one of paragraphs. 1-5, wherein the pipe piercing module rotates the retractable piercing element to create at least one hole. 7. The projectile according to any one of paragraphs. 1-6, further comprising a cable (40), such that the tool is a cable-launched workover tool. 8. The projectile according to any one of paragraphs. 1-7, further comprising a logging module (36) for determining the position of the tool. 9. Well system (200), containing: - wellbore (28); - casing pipe (4) located in the wellbore; - a tubing (2) located at least partially inside the casing; - production packer (5) located between the casing and the tubing to form an annular space (6) above the production packer; And - tool tool (1) for overhaul of a well according to any one of paragraphs. 1-8, configured to be located inside the tubing. 10. The system of claim 9, further comprising a pump module (52) that circulates heavy fluid down the annulus through at least one opening and into the tubing. 11. The system according to any one of paragraphs. 9-10, further comprising equipment (53) configured to pull the first portion of tubing from the wellbore and/or configured to insert replacement tubing to replace the first portion. 12. The system of claim 11, wherein the replacement tubing (60) includes a tubing packer (61). 13. The system according to any one of paragraphs. 12, in which the tubing packer includes an expansion sleeve (62). 14. A repair method for repairing well completion equipment (100) having a top (3), wherein the well completion equipment comprises a casing (4) in which a tubing (2) is located, and a production packer (5), located between the casing pipe and the tubing to form an annular space (6) above the production packer, wherein the tool for workover of the well contains a cutting edge (12) configured to rotate around the longitudinal axis in the process of extension relative to the housing for cutting from the inside into a tubing wall (14) for separating the first tubing portion (15) closest to the apex from the second tubing portion (16); - place a tool (1) for overhaul of the well according to any one of paragraphs. 1-8 in the tubing, wherein the well workover tool contains a cutting edge (12) configured to rotate around a longitudinal axis when extended relative to the housing for cutting from the inside into the wall (14) of the tubing to separate the first part (15) the tubing closest to the apex from the second tubing portion (16); - at least one hole is made above the production packer in the first part by means of a pipe punching module; - provide circulation of heavy fluid through at least one opening; - cutting the wall of the tubing pipe above the plug located inside the second part of the tubing pipe, separating the first part and the second part of the tubing pipe; - pull out the tool from the pump-compressor pipe; And - pull out the first part of the tubing pipe from the casing.

Images