CN106764232B

CN106764232B - Pipe repair tool and method of repairing a pipe

Info

Publication number: CN106764232B
Application number: CN201610828834.0A
Authority: CN
Inventors: 杨培正
Original assignee: Hong Kong and China Gas Co Ltd
Current assignee: Hong Kong and China Gas Co Ltd
Priority date: 2015-11-20
Filing date: 2016-09-18
Publication date: 2019-01-18
Anticipated expiration: 2036-09-18
Also published as: HK1210369A2; CN206338540U; CN106764232A

Abstract

A pipe rehabilitation tool (10) for use in rehabilitating a pipe (9), comprising a tube (100) having a first end (101) and a second end (102), the pipe being longitudinally insertable through a proximal end (9.1) of the pipe such that the second end (102) reaches a distal end (9.2) of the pipe (9), and a tubular gap (G) being formed between the tube (100) and the pipe (9). Further included is a sealing member (200) located at the second end (102) of the tubing (100) for sealing the inner end of the tubular gap (G), and an operating mechanism (300) for operating the sealing member (200). Furthermore, a closing member (400) is provided for closing the outer end of the tubular gap (G), thereby defining an inner region of the tubular gap (G), at least part of which is filled with a repairing material for repairing the pipe (9) from the inside of the pipe (9). An associated method for repairing a pipe is also disclosed.

Description

The method of pipeline rehabilitation tool and pipe-repairing

The present invention relates to a kind of pipeline rehabilitation tools and a kind of method for pipe-repairing or similar device, are especially suitable for But it is not limited to the pipeline or similar device of delivery of fuel gas (such as coal gas or natural gas) or liquid (such as water or oil).

Background technique

It is that would generally be up to for long-time service using the time that pipeline for conveying liquid or gas, which is manufactured, Many decades, however even if not damaging, deterioration or the maintenance for needing to repair (or recovery) are also inevitable.It is mounted on The piping outside the house is highly susceptible to corrode.

It is obvious that replacing problematic pipe section is a solution, but it is not usually first choice, for embedding Enter or for the pipeline of wall or concrete it is especially true.More situations is still to be unlikely to be replaced but need to tie up It repairs, such as extends or maximize its life expectancy by maintenance or thorough overhaul pipe-line system.

The present invention attempts completely newly or separately have improved pipeline rehabilitation tool and relevant pipeline rehabilitation side by providing one kind Method is alleviated or at least mitigates such defect.

Summary of the invention

According to the first aspect of the invention, provided is that one kind uses during pipe-repairing or similar device Pipeline rehabilitation tool be longitudinally inserted into institute via the proximal end of the pipeline including the tubing with first end and second end State pipeline so that the second end reaches the distal end for the section that the pipeline to be repaired, and tubing and the pipeline it Between along the section to be repaired form an annular interstice.Additionally include one and is located at the second end of tubing and for close Seal the containment member of annular interstice inner end, and operation mechanism associated with the tubing and for operating the containment member.This Thus outer also enclosed member associated with the tubing defines the inside of annular interstice to be closed the outer end of annular interstice Range, at least partly range is filled with repair materials in the middle, so as to from pipeline described in the internal repair of the pipeline.

It is worth noting that, the section of the pipeline to be repaired includes a part of the pipeline or entirely manages Road.

Preferably, which is resiliently flexible, is arranged to and is acted on by the operation mechanism application, so as to The inner end in sealed tubular gap.

It is further preferred that by the operation mechanism application act on when, the containment member can with radial dilatation, thus with The mode of sealing is engaged in the outside of the annular interstice.

It is further preferred that the containment member is meshed with the second end of the tubing before being next to expansion.

Preferably, which is spherical or elliposoidal, and is configured to be compressed for the operation mechanism.

Preferably, which can be from the second end radial dilatation of the tubing, to seal the annular interstice Inner end, while being about to the second end of the tubing certainly, it is placed in the center relative to the pipeline.

In a preferred embodiment, which includes the operating member that can be operated outside tubing, and And further includes one and extend to the containment member from the operating member inside tubing and apply the elongate member being applied to it.

It is further preferred that the elongate member has rigid structure.

It is further preferred that the elongate member runs through the containment member, and contain the anchor for fixing the containment member Part.

It is further preferred that the containment member is located between the anchor and the second end of the tubing, so as in operation mechanism When operation, compressed by the second end of the anchor towards the tubing.

Preferably, which is connected with elongate member and can angularly move, to apply to elongate member Add tension, to act on containment member application.

It is further preferred that the operating member is pivotable or rotatable, to execute operation.

Preferably, operating member is located at the first end of tubing.

In a preferred embodiment, which includes a hole, and repair materials can pass through the hole Hole and the inside for being introduced into annular interstice.

It is further preferred that the pipeline rehabilitation tool includes being inserted into inside the annular interstice by the hole, to draw Enter the pipeline of fix tool.

It is furthermore preferred that the pipeline be it is expansible, to reach the inner end of annular interstice, thus the inner end will repair Material introduces annular interstice.

Preferably, which includes the second hole being detached from inside annular interstice for excessive repair materials.

Preferably, which can move along tubing.

It is further preferred that the enclosed member has a hole and is coaxially arranged on tubing, wherein the tubing Extend through the hole.

In a specific structure, which includes cap, for correspond to annular interstice outer end described in The proximal end of pipeline is meshed.

More specifically, which includes the internal whorl for being screwed on the proximal end of the pipeline.

In a preferred embodiment, which includes the set that can be arranged in coaxial fashion on tubing Pipe, for being in contact with the repair materials in annular interstice.

It is further preferred that the length of the casing is enough thus to be isolated from the tubing across the entire section to be repaired Repair materials in the annular interstice.

It is further preferred that the casing has rigid tubular body.

According to the second aspect of the invention, it is provided be a kind of pipe-repairing or similar device method, including with Lower step:

A., foregoing pipeline rehabilitation tool is provided；

B. the tubing is longitudinally inserted into the pipeline via the proximal end of the pipeline, so that the second end of tubing reaches institute The distal end of the section of the pipeline to be repaired, and tubulose is formed along the section to be repaired between the tubing and the pipeline Gap；

C. the outer end of the annular interstice is closed by operating the enclosed member；

D. the containment member is operated by operating the operation mechanism, to seal the inner end of the annular interstice；

E. repair materials are introduced inside the annular interstice, so as to from pipeline described in the pipeline internal repair；And

F. the enclosed member and the containment member are unclamped, pipeline rehabilitation tool is then withdrawn from the pipeline.

Preferably, step C include enclosed member is screwed be fixed on proximal tube end corresponding with annular interstice outer end it On, the enclosed member is operated whereby.

Preferably, step D includes: to make its radial dilatation to containment member application effect by operating the operation mechanism, To seal the inner end of the annular interstice.

It is further preferred that step D includes: to be compressed by operating the operation mechanism and the radial dilatation containment member, To seal the inner end of the annular interstice, while being about to the second end of the tubing certainly, is placed in the center relative to the pipeline.

It is further preferred that step D includes: to be grasped by angularly moving or rotating the operating member in the operation mechanism Make the operation mechanism.

Preferably, step E includes introducing repair materials by the hole in the enclosed member.

Preferably, step F includes staying in casing in the pipeline, to cover the repair materials.

Detailed description of the invention

The present invention is more particularly described with reference to the drawings and by example, in which:

Fig. 1 is used in one embodiment of the restorative procedure in pipeline according to the present invention or similar device according to this The perspective view of one embodiment of the pipeline rehabilitation tool of invention；

Fig. 2 is another perspective view of the pipeline rehabilitation tool from Fig. 1 that opposite direction obtains；

Fig. 3 is perspective view corresponding with Fig. 1, it is shown that will be inserted into the pipeline rehabilitation tool of pipeline to be repaired；

Fig. 4 is that show corresponding with Fig. 3 will be inserted into the side sectional view of the pipeline rehabilitation tool of pipeline to be repaired；

Fig. 5 is the side sectional view for showing and being inserted into the pipeline rehabilitation tool of pipeline corresponding with Fig. 4；

Fig. 6 is corresponding with Fig. 5 to show how pipeline rehabilitation tool applies the side sectional view for acting on pipeline；

Fig. 7 is the side sectional view for showing and repair materials being introduced to pipeline by using pipeline corresponding with Fig. 6；

Fig. 8 is corresponding with Fig. 7 to show pipeline rehabilitation tool side for withdrawing from from pipeline of preparation after completing operation Face cross-sectional view；And

Fig. 9 is the side sectional view of the pipeline for showing and having repaired corresponding with Fig. 8.

Specific embodiment

With reference to attached drawing, there is shown be pipeline rehabilitation tool 10 for pipe-repairing or similar device, and pass through Carry out the method for pipe-repairing or similar device using the pipeline rehabilitation tool 10, the two is implementation of the invention.It to be repaired Pipeline can be the pipe being made of metal and for delivery of fuel gas (such as coal gas or natural gas) or liquid (such as water or oil) Road 9 or similar device, such as tubing, conduit, hose or main pipeline.In this example, pipeline 9 is that building is used for corresponding building Thus one branch of the standpipe of layer supply combustion gas, the horizontal extension on the exterior wall 7 of building cause to be difficult to 9 (example of pipeline Such as the damage caused by corroding) it repairs, and pipeline rehabilitation tool 10 then can be used.

Pipeline rehabilitation tool 10 will be described in detail structurally and operationally in the following description, therefrom be apparent that phase The restorative procedure of associated pipeline or similar device with multiple steps.In general, pipeline rehabilitation tool 10 includes tubing 100, containment member 200, operation mechanism 300 and enclosed member 400, and optionally include a casing 90.

Tubing 100 can be made of steel.It is with first end 101 and second end 102, the second end 102 are longitudinally inserted into pipeline 9 via the proximal end 9.1 (being in indoor end) of pipeline 9, so that second end 102 reaches the to be repaired of pipeline 9 The distal end 9.2 (Fig. 3 and Fig. 4) of multiple section.The proximal end 9.1 of pipeline 9 is sudden and violent after having unscrewed the pipe fitting for being connected to downstream It exposes outside, and usually there is external screw-thread 9.1s.It then, can be along section shape to be repaired between tubing 100 and pipeline 9 At an annular interstice G, wherein the section to be repaired can be a part of pipeline 9, and it is in described embodiment In be entire pipeline 9.

Casing 90 has it is preferable to use rigid tubular body made of steel, and interior diameter is outer straight slightly larger than tubing 100 Diameter, the casing 90 can be arranged in coaxial fashion on tubing 100 as a result, so as to 100 compounding practice of tubing, especially use In tubing 100 of the covering in annular interstice G.Casing 90 is designed to and repair materials phase that annular interstice G is subsequently introduced Contact.For casing 90, length or the length cut just are enough to extend to the entire of the pipeline 9 to be repaired Thus section separates the repair materials in annular interstice G with 100 phase of tubing.In use, casing 90 is disposed in pipe first On material 100 (Fig. 4), then, the tubing 100 is inserted into pipeline 9 (Fig. 5) together with casing 90.

Containment member 200 is provided in the second end 102 of tubing 100, and the inner end of sealed tubular clearance G is used for. Before immediately operation (namely extending), containment member 200 can be engaged with the second end 102 of tubing 100, diametrically It is larger than tubing 100.As shown, the shape of the containment member 200 is sphere or spheroid, and it is made of rubber , it is thus resiliently flexible.Containment member 200, which is arranged to through operation mechanism 300, to play a role, especially into Row compression, so as to the inner end of sealed tubular clearance G.More specifically, when being compressed by operation mechanism 300, containment member 200 with radial dilatation, thus can engage in a sealing manner the outside (Fig. 6) of annular interstice G, wherein the annular interstice Outside is preferably the inner surface (or can be the pipe fitting 8 being connected with the distal end 9.2 of pipeline 9) of pipeline 9.

Operation mechanism 300 is associated with tubing 100, to operate containment member 200, such as is tightened or is loosened.It should Operation mechanism 300 includes an operating member, and form of the operating member as lever 310 can be carried out from the external of tubing 100 Operation, and further include an elongate member, the form of the elongate member is that have the thin bar 320 of rigid structure, the thin bar 320 center inside tubing 100 extends, and containment member 200 is extended to since lever 310, and apply and act on The containment member 200.

More specifically, thin bar 320 extends through containment member 200, and contains one and be used for from containment member 200 Behind fix the anchor 321 of the component.Containment member 200 is located between anchor 321 and the second end 102 of tubing 100, To be compressed by anchor 321 towards the second end 102 for seeing tubing 100 when operation mechanism 300 is operated.

Lever 310 is located at the first end 101 of tubing 100, and has a cam head 311, the cam head 311 with Hinged mode is connected with the proximal end of thin bar 320, and is pressed in the first end 101 of tubing 100.The lever 310 can be into Row angle is mobile or rotates, it is particularly possible to pivot around tubing 100, will pass through cam effect to apply pulling force to thin bar 320 (Fig. 6), so that anchor 321 be pulled to act on containment member 200 to apply.Then, anchor 321 can be towards the second of tubing 100 102 compression seal component 200 of end, as a result, radially extending the containment member 200, thus sealed tubular clearance G Inner end.

It is radially extended second end 102 of the containment member 200 since tubing 100 to close in annular interstice G When end, the second end 102 that it can be about to tubing 100 certainly simultaneously is placed in the center relative to pipeline 9.It is this to be voluntarily placed in center Effect will ensure that annular interstice G around tubing 100 in 360 ° of openings, and since the second end of tubing 100 102 It is opened downwards along its longitudinal extent.

Enclosed member 400 is associated with tubing 100, to be closed the outer end of tubulose clearance G, thus defines annular interstice G Internal range, which is used to receiving or being filled with the repair materials of such as sealing material polyurethane (PU) etc, so as to From the internal repair pipeline 9 of pipeline 9.The enclosed member 400 can be provided by a cap 410, and the cap 410 has The internal whorl 410s (Fig. 5) being meshed and screwing with the proximal end 9.1 of the pipeline 9 of the outer end corresponding to annular interstice G.It should Cap 410 has round center hole 410a, and is arranged on tubing 100 in coaxial fashion, and the tubing 100 then runs through Hole 410a, the cap 410 can be moved or be slided along tubing 100 as a result, to reach the proximal end 9.1 and therewith of pipeline 9 It is connected.

The cap 410 includes the two circular cavities positioned at the opposite two sides of centre bore 410a, i.e. 411 He of the first hole Second hole 412.Now, sealing material can be introduced into the inside of annular interstice G by the first hole 411.Preferably, make For a part of pipeline rehabilitation tool 10, used is a tubule 500, is inserted into tubulose by the first hole 411 The inside of clearance G, to introduce sealing material.

It is best in order to achieve the effect that, tubule 500 be extended to reach annular interstice G inner end or inner terminal, so as to Sealing material is introduced annular interstice G by the inner end of annular interstice G.In this way, sealing material can be since the inner end of annular interstice G Annular interstice G is filled up, and excessive sealing material can be detached from the inside of annular interstice G by the second hole 412 of opposite end. This would assure that the inside of annular interstice G to be fully sealed occupied by material, or at least will wherein may cause sealing Incomplete gap minimizes.Hereafter, tubule 500 should be retracted.

With after the sealing material of alphabetical " S " expression in having disposed Fig. 8 and 9, cap 410 will be unscrewed, and thick stick Bar 310 will be pivoted reversely, to discharge containment member 200.Then, the tubing 100 with containment member 200 can be from pipeline 9 In be retracted, thus casing 90 is stayed in pipeline 9, and on the inner surface of pipeline 9 be arranged one layer of sealing material S, thus Block any further leakage inside pipeline 9.Casing 90 can rest on the inside of pipeline 9, close from there through covering Closure material S protects and/or keeps the sealing material S be in appropriate position.

The restorative procedure of pipeline 9 as described above can be summarized as having basic step below:

A. pipeline rehabilitation tool 10 (Fig. 1 and 2) is provided；

B. tubing 100 is longitudinally inserted into pipeline 9 via the proximal end 9.1 of pipeline 9, so that the second end 102 of tubing 100 arrives One is formed along the section to be repaired up to the distal end of the section of pipeline 9 to be repaired, and between tubing 100 and pipeline 9 A annular interstice G (Fig. 3 and 4)；

C. the outer end (Fig. 5) of tubulose clearance G is closed by operation enclosed member or cap 410；

D. containment member 200 is operated by operation operation mechanism 300, so as to the inner end (Fig. 6) of sealed tubular clearance G；

E., repair materials are introduced to the inside of annular interstice G, so as to from the internal repair pipeline 9 (Fig. 7) of pipeline 9；And

F. cap 410 and containment member 200 (Fig. 8) are unclamped, pipeline rehabilitation tool 10 is then withdrawn from pipeline 9.

Step C includes the proximal end 9.1 that will be closed cap 410 and be screwed in pipeline 9 corresponding with the outer end of annular interstice G On.

In step D, the application of operation mechanism 300 in operation acts on containment member 200, and especially carries out to it Compression, so that the inner end of its radial dilatation and sealed tubular clearance G, and as convenient place, while can also be about to pipe certainly The second end 102 of material 100 is placed in the center relative to pipeline 9.Operate the operation mechanism 300, be related to angularly moving or The operating member or lever 310 of rotation process mechanism 300.

Step E is performed by introducing via the hole 411 in closure cap 410 or injecting repair materials.

As for step F comprising unscrewing cap 410 and in the opposite direction pivot rotaring lever 310.Step F is included in use It is stayed in pipeline 9 in the case where casing 90, will pass through covering come the repair materials S set by protecting and/or keeping.

It is envisioned that the specific structure of pipeline rehabilitation tool 10 or its primary clustering 100 to 400, being can be by The equivalent or alternative changes, modifications or substitution of identical function are provided.For example, operation mechanism 300, which can be added, passes through rotation The different types of operating member of stubborn impact operations, rather than lever 310.The shape of containment member 200 can be oblate spheroid, and It is not spheroidal.Casing 90 is optional, but it is also preferably, nevertheless, it is also dispensed, in the case It is necessary to by tubing 100 be inserted into pipeline 9 before, on the outer surface of tubing 100 apply release agent, so as to easily from Tubing 100 is discharged and withdrawn in set sealing material.

The present invention is only shown by embodiment, in the feelings for not departing from the scope of the present invention as defined in accessory claim Under condition, those skilled in the art can carry out other various modifications and/or change to described embodiment.

Claims

1. a kind of pipeline rehabilitation tool used during pipe-repairing or similar device, comprising:

Tubing with first end and second end is longitudinally inserted into the pipeline via the proximal end of the pipeline so that this Two ends reach the distal end for the section that the pipeline to be repaired, and along being repaired between the tubing and the pipeline Section formed an annular interstice；

Positioned at the second end of tubing and the containment member of the inner end for sealing the annular interstice；

It is connected and is used to operate the operation mechanism of the containment member with the tubing；And

Thus enclosed member associated with the tubing defines the inside model of annular interstice to be closed the outer end of annular interstice It encloses, at least partly range is filled with repair materials in the middle, so as to from pipeline described in the internal repair of the pipeline.

2. pipeline rehabilitation tool as described in claim 1, which is characterized in that the section to be repaired of the pipeline includes described A part of pipeline or entire pipeline.

3. pipeline rehabilitation tool as described in claim 1, which is characterized in that the containment member be it is resiliently flexible, It is arranged to and is acted on by the operation mechanism application, to seal the inner end of the annular interstice.

4. pipeline rehabilitation tool as claimed in claim 3, which is characterized in that when being acted on by the operation mechanism application, this is close Thus envelope component can be engaged in a sealing manner the outside of the annular interstice with resilient expansion.

5. pipeline rehabilitation tool as claimed in claim 4, which is characterized in that immediately expand before, the containment member with should The second end of tubing is meshed.

6. pipeline rehabilitation tool as claimed in claim 3, which is characterized in that the containment member is spherical or elliposoidal, and And it is configured to be compressed for the operation mechanism.

7. the pipeline rehabilitation tool as described in any claim in claim 1-6, which is characterized in that the containment member can be with From the second end radial dilatation of the tubing, to seal the inner end of the annular interstice, while being about to the second end of the tubing certainly End is placed in the center relative to the pipeline.

8. the pipeline rehabilitation tool as described in any claim in claim 1-6, which is characterized in that the operation mechanism includes The operating member that can be operated outside the tubing, and further include an elongate member, from the operation inside tubing Component extends to the containment member and applies and acts on the containment member.

9. pipeline rehabilitation tool as claimed in claim 8, which is characterized in that the elongate member has rigid structure.

10. pipeline rehabilitation tool as claimed in claim 8, which is characterized in that the elongate member runs through the containment member, and Contain the anchor for fixing the containment member.

11. pipeline rehabilitation tool as claimed in claim 10, which is characterized in that the containment member is located at the anchor and the tubing Second end between, to be compressed by the second end of the anchor towards the tubing when operation mechanism operates.

12. pipeline rehabilitation tool as claimed in claim 8, which is characterized in that the operating member is connected simultaneously with the elongate member And can angularly move, to apply tension to the elongate member, to act on the containment member application.

13. pipeline rehabilitation tool as claimed in claim 12, which is characterized in that the operating member can pivot, to execute Operation.

14. pipeline rehabilitation tool as claimed in claim 8, which is characterized in that the operating member is located at the first end of the tubing End.

15. the pipeline rehabilitation tool as described in any claim in claim 1-6, which is characterized in that the enclosed member packet Hole is included, and repair materials can be introduced into the inside of the annular interstice by described hole.

16. pipeline rehabilitation tool as claimed in claim 15, which is characterized in that the pipeline rehabilitation tool includes pipeline, can be with The inside of the annular interstice is inserted by the hole to introduce repair materials.

17. pipeline rehabilitation tool as claimed in claim 16, which is characterized in that the pipeline be it is expansible, to reach this Thus repair materials are introduced the annular interstice in the inner end by the inner end of annular interstice.

18. pipeline rehabilitation tool as claimed in claim 15, which is characterized in that the enclosed member includes the second hole, for mistake The repair materials of amount are detached from inside the annular interstice.

19. the pipeline rehabilitation tool as described in any claim in claim 1-6, which is characterized in that the enclosed member can It is moved along the tubing.

20. pipeline rehabilitation tool as claimed in claim 19, which is characterized in that the enclosed member has a hole, and same Axis it is arranged on the tubing, wherein the tubing passes through the hole.

21. the pipeline rehabilitation tool as described in any claim in claim 1-6, which is characterized in that the enclosed member packet A cap is included, for being meshed with the proximal end for the pipeline for corresponding to the annular interstice outer end.

22. pipeline rehabilitation tool as claimed in claim 21, which is characterized in that the cap includes for being screwed in the pipe Internal whorl on the proximal end in road.

23. the pipeline rehabilitation tool as described in any claim in claim 1-6, which is characterized in that the pipeline rehabilitation work Tool includes the casing that can be arranged in coaxial fashion on the tubing, for connecting with the repair materials in the annular interstice Touching.

24. pipeline rehabilitation tool as claimed in claim 23, which is characterized in that the length of the casing is enough across being repaired Entire section, the repair materials being thus isolated from the tubing in the annular interstice.

25. pipeline rehabilitation tool as claimed in claim 23, which is characterized in that the casing has rigid tubular body.

26. a kind of method of pipe-repairing or similar device, comprising the following steps:

A., pipeline rehabilitation tool as described in any claim in claim 1-6 is provided；

B. the tubing is longitudinally inserted into the pipeline via the proximal end of the pipeline, so that the second end of the tubing reaches pipeline The distal end of the section to be repaired, and formed between tubulose between the tubing and the pipeline along the section to be repaired Gap；

E., repair materials are introduced to the inside of the annular interstice, so as to from pipeline described in the pipeline internal repair；And

F. enclosed member and containment member are unclamped, pipeline rehabilitation tool is then withdrawn from pipeline.

27. the method for pipe-repairing as claimed in claim 26 or similar device, which is characterized in that step C includes closing this Conjunction component, which screws, to be fixed on proximal tube end corresponding with annular interstice outer end, operates the enclosed member whereby.

28. the method for pipe-repairing as claimed in claim 26 or similar device, which is characterized in that step D includes passing through behaviour Make the operation mechanism and be allowed to radial dilatation to containment member application effect, to seal the inner end of the annular interstice.

29. the method for pipe-repairing as claimed in claim 28 or similar device, which is characterized in that step D includes passing through behaviour Make the operation mechanism to compress and the radial dilatation containment member, to seal the inner end of the annular interstice, while being about to certainly The second end of the tubing is placed in the center relative to the pipeline.

30. the method for pipe-repairing as claimed in claim 28 or similar device, which is characterized in that step D includes by having Angle operating member in mobile or rotation process mechanism operate the operation mechanism.

31. the method for pipe-repairing as claimed in claim 26 or similar device, which is characterized in that step E includes by being somebody's turn to do Hole in enclosed member introduces repair materials.

32. the method for pipe-repairing as claimed in claim 26 or similar device, which is characterized in that step F includes will be with same The casing that the mode of axis is arranged on the tubing stays in the pipeline, to cover the repair materials.