CN219691508U - Soluble metal bottom plug expansion pipe sleeve repairing equipment - Google Patents
Soluble metal bottom plug expansion pipe sleeve repairing equipment Download PDFInfo
- Publication number
- CN219691508U CN219691508U CN202320571231.2U CN202320571231U CN219691508U CN 219691508 U CN219691508 U CN 219691508U CN 202320571231 U CN202320571231 U CN 202320571231U CN 219691508 U CN219691508 U CN 219691508U
- Authority
- CN
- China
- Prior art keywords
- bottom plug
- expansion pipe
- soluble metal
- metal bottom
- alloy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 40
- 239000002184 metal Substances 0.000 title claims abstract description 40
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 33
- 239000000956 alloy Substances 0.000 claims abstract description 33
- 238000010276 construction Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 abstract description 8
- 230000008439 repair process Effects 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 3
- 238000003801 milling Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- JOHZPMXAZQZXHR-UHFFFAOYSA-N pipemidic acid Chemical compound N1=C2N(CC)C=C(C(O)=O)C(=O)C2=CN=C1N1CCNCC1 JOHZPMXAZQZXHR-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a plugging expansion pipe sleeve repairing device for a soluble metal bottom plug, which consists of 7 parts of a soluble metal bottom plug, an expansion cone, an alloy expansion pipe, a rubber sealing ring, a central pipe, an upper joint, a safety joint and the like; the rivet structure with the special structure of the soluble metal bottom plug can be dissolved, and the used rivet fixer can be dissolved; the utility model adopts the soluble metal bottom plug, can simultaneously meet the requirement of high-pressure test sealing of the well repairing and intersecting sleeve, does not need salvaging or drilling and milling bottom plug operation, and can realize quick and quick clearing of the rivet holder and the soluble metal bottom plug through pipe column pressurization; the operation is simple, safe and reliable, and has important significance for simplifying the construction procedure of sleeve damage repair operation, reducing the risk of operation difficulty, and particularly reducing the operation cost.
Description
Technical Field
The utility model relates to the field of expansion pipes, in particular to a plugging expansion pipe sleeve repairing device with a soluble metal bottom.
Background
The repair tool for the soluble metal bottom plugging expansion pipe sleeve is developed in the entity expansion pipe technology in the 90 th year of the last century, and plays an important role in the technical fields of drilling, well completion and well repair.
The original expansion pipe technology is to utilize the shaft hydraulic force to push the expansion cone, and simultaneously, to superpose the lifting force of the drill rod on the expansion cone to complete the expansion of the pipe so as to realize the casing repairing operation. The bottom plug is used as a core technical tool of the expansion pipe sleeve damage repair process, so that the normal operation of the construction process is ensured, smooth removal after the construction is completed is ensured, further, the well shaft is quickly emptied, and the normal state of the production well is recovered.
The expansion pipe technology has the defects that the bottom plug needs to have higher strength to realize effective sealing so as to ensure that the expansion construction process is smoothly implemented, and meanwhile, the bottom plug needs to be quickly removed after the operation is completed so as to realize quick recovery of the productivity of the oil and gas well. Common bottom plug removing modes comprise an oil pipe salvaging mode and a drilling mode, and the pipe column is required to be lifted up and down again in the modes, so that the construction workload and the operation risk are greatly increased, and meanwhile, the operation period is long; the bottom plug adopted by the expansion and fishing integrated expansion pipe repairing technology can be lifted to a wellhead along with an oil pipe string after expansion construction is completed, so that construction procedures are simplified, but the expansion pipe column has the defects of complex structure, high construction risk, low efficiency, limited adaptation scene and the like, and the phenomena of pipe column blocking, incapability of smooth construction and the like are easily caused when the pipe column is lifted up in expansion construction and completion construction, so that underground safety accidents are caused.
Disclosure of Invention
The utility model aims to provide a plugging expansion pipe sleeve patching device capable of dissolving a metal bottom plug, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a stifled expansion pipe sleeve pipe patch equipment of soluble metal end, includes alloy expansion pipe, alloy expansion pipe upper end is equipped with the top connection, alloy expansion pipe mid portion is equipped with can seal alloy expansion pipe's rubber sealing ring, the top connection is connected with and is located the intraductal center tube of alloy expansion, the center tube upper end runs through the top connection is located external part and is connected with safe joint, the center tube lower extreme is connected with than alloy expansion pipe upper end diameter dimension big expansion cone, alloy expansion pipe lower extreme is equipped with soluble metal end and blocks up, soluble metal end is blocked up and can be dissolved, need not remove after the construction.
The soluble metal bottom plug comprises a bottom plug body, a rivet fixing device used for being arranged at the bottom of the alloy expansion pipe by the bottom plug body is arranged on the bottom plug body, and a sealing ring positioned at the lower end of the rivet fixing device is arranged between the bottom plug body and the alloy expansion pipe.
The bottom plug is capable of dissolving.
A rivet fixer is arranged between the side wall of the bottom plug body and the alloy expansion pipe.
The outer wall of the bottom plug body is provided with a rectangular groove; two rubber sealing rings are embedded in the rectangular groove.
The rivet fixing devices are distributed into two paths, and the first path Hu Ding fixing devices and the second path cangue nail fixing devices are arranged in a staggered mode.
The rivet holder is dissolvable.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The expansion pipe with the soluble metal bottom plug provided by the utility model has the advantages that the expansion cone is directly connected with the oil pipe through the central pipe, the expansion pipe column has a simple integral structure, the processing and assembling difficulties are small, the construction process flow is simple, and the like.
(2) The soluble metal bottom plug expansion pipe provided by the utility model adopts the high-strength soluble magnesium aluminum alloy as the raw material, provides effective sealing in the construction process, is quickly dissolved after the construction is finished, and can accurately regulate and control the dissolution time.
(3) The soluble metal bottom plug expansion pipe provided by the utility model is subjected to targeted surface treatment based on physical parameters of underground fluid media, is insensitive to underground high temperature, hypersalinity and other complex conditions, and can meet the construction requirements of high temperature, hypersalinity and other complex wells.
(4) The soluble metal bottom plug expansion pipe provided by the utility model has the advantages that the application range is wide, the single-connection sleeve repairing requirement and the multi-connection sleeve repairing requirement can be met, the 'plugging' operation is not needed during the multi-connection repairing, the adaptability to the curvature and the in-place position of the well hole is strong, and the construction efficiency and the success rate are high.
(5) According to the soluble metal bottom plug expansion pipe provided by the utility model, the construction safety can be greatly ensured, when extreme conditions such as incapability of moving pipe column blocking and the like occur in the ascending process of the expansion cone, the pipe column below the safety joint can be released by throwing balls and pressing, the special expansion cone is connected again to squeeze and expand from the upper part of the expansion pipe until the construction is successfully completed, the pipe column below the expansion cone is salvaged and lifted to a wellhead, and zero construction risk is thoroughly realized.
Drawings
FIG. 1 is a schematic diagram of the structure of a dissolvable metal bottom plug expansion pipe of the present utility model;
FIG. 2 is a schematic diagram of a soluble metal bottom plug according to the present utility model.
In the figure: 1. the metal bottom plug can be dissolved; 2. an expansion cone; 3. an alloy expansion pipe; 4. a rubber seal ring; 5. a central tube; 6. an upper joint; 7. a safety joint; 101. a bottom plug body; 102. a seal ring; 103. a rivet holder.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-2, the present utility model provides a technical solution: the utility model provides a stifled expansion pipe sleeve pipe patch equipment of soluble metal end, includes alloy expansion pipe 3, alloy expansion pipe 3 upper end is equipped with upper joint 6, alloy expansion pipe 3 mid portion is equipped with can seal alloy expansion pipe 3's rubber sealing ring 4, upper joint 6 connects by being located center tube 5 in the alloy expansion pipe 3, center tube 5 upper end runs through upper joint 6 is located external part and is connected with safety joint 7, center tube 5 lower extreme is connected with than alloy expansion pipe 3 upper end diameter size big expansion cone 2, alloy expansion pipe 3 lower extreme is equipped with soluble metal end and blocks up 1, soluble metal end is blocked 1 and can dissolve, need not remove after the construction.
The soluble metal bottom plug 1 comprises a bottom plug body 101, a rivet fixing device 103 used for the bottom plug body 101 to be installed at the bottom of the alloy expansion pipe 3 is arranged on the bottom plug body 101, and a sealing ring 102 positioned at the lower end of the rivet fixing device 103 is arranged between the bottom plug body 101 and the alloy expansion pipe 3.
The bottom plug body 101 can be dissolved, and the bottom plug body 101 is made of high-strength soluble magnesium aluminum alloy by adopting a unique riveting structure.
18 rivet fixing devices 103 are arranged between the side wall of the bottom plug body 101 and the alloy expansion pipe 3.
The outer wall of the bottom plug body 101 is provided with a rectangular groove; two rubber sealing rings 102 are embedded in the rectangular groove, the sealing performance of the soluble metal bottom plug 1 can be improved by the rubber sealing rings 102, and the soluble metal bottom plug 1 is directly riveted at the tail of the alloy expansion pipe 3 by rivets.
The rivet fixing devices 103 are distributed into two paths, the first rivet fixing device 103 and the second rivet fixing device 103 are arranged in a staggered mode, and the inner walls are in clearance fit or transition fit.
The rivet holder 103 is capable of dissolving.
Working principle:
when the device is used, after the preparation of the preface operations such as simulating a drift well and cleaning a shaft is completed, a soluble bottom plug expansion pipe column is connected through an oil pipe string, after the pipe string is put into a preset position, a well head connection pump truck starts to press, as the pressure continuously rises, an expansion cone 2 continuously ascends under the combined action of the lifting force of a central pipe 5 and the hydraulic pressure of the shaft to realize expansion construction of the expansion pipe until the expansion cone expands out of the expansion pipe, and the pumping pressure is increased until the on-site required patch sealing pressure is detected to verify the patch construction effect;
after the inspection is qualified, the pumping pressure is continuously increased by 3-5MPa, the rivet fixing device 103 is sheared, the well liquid is triggered to start to rapidly dissolve the soluble metal bottom plug 1, the pipe column is lifted to the well head, the construction is completed, the bottom plug dissolution time can be accurately controlled, the implementation process flow is simple, the safety is high, and the like. The soluble metal bottom plug can simultaneously meet the requirements of casing repairing and wellbore pressure test after repairing, and is simple to operate, safe and reliable.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a stifled expansion pipe sleeve pipe patch equipment of soluble metal end which characterized in that: including alloy expansion pipe (3), alloy expansion pipe (3) upper end is equipped with upper joint (6), alloy expansion pipe (3) mid portion is equipped with can seal rubber sealing ring (4) of alloy expansion pipe (3), upper joint (6) are connected with and are located center tube (5) in alloy expansion pipe (3), center tube (5) upper end runs through upper joint (6) are located external part and are connected with safety joint (7), center tube (5) lower extreme is connected with than expansion cone (2) that alloy expansion pipe (3) upper end diameter size is big, alloy expansion pipe (3) lower extreme is equipped with can dissolve stifled (1) at the bottom of the metal, can dissolve at the bottom of the metal of the stifled (1) can dissolving, need not remove after the construction.
2. The soluble metal bottom plug expansion pipe casing patch device of claim 1, wherein: the soluble metal bottom plug (1) comprises a bottom plug body (101), a rivet fixing device (103) which is used for being installed at the bottom of the alloy expansion pipe (3) by the bottom plug body (101) is arranged on the bottom plug body (101), and a sealing ring (102) which is positioned at the lower end of the rivet fixing device (103) is arranged between the bottom plug body (101) and the alloy expansion pipe (3).
3. The soluble metal bottom plug expansion pipe casing patch device of claim 2, wherein: the bottom plug (101) can be dissolved.
4. The soluble metal bottom plug expansion pipe casing patch device of claim 2, wherein: 18 rivet fixing devices (103) are arranged between the side wall of the bottom plug body (101) and the alloy expansion pipe (3).
5. The soluble metal bottom plug expansion pipe casing patch device of claim 2, wherein: the outer wall of the bottom plug body (101) is provided with a rectangular groove; two rubber sealing rings (102) are embedded in the rectangular groove.
6. The soluble metal bottom plug expansion pipe casing patch device of claim 2, wherein: the rivet fixing devices (103) are distributed into two paths, and the first path of rivet fixing devices (103) and the second path of rivet fixing devices (103) are arranged in a staggered mode.
7. The soluble metal bottom plug expansion pipe casing patch device of claim 2, wherein: the rivet holder (103) is dissolvable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320571231.2U CN219691508U (en) | 2023-03-21 | 2023-03-21 | Soluble metal bottom plug expansion pipe sleeve repairing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320571231.2U CN219691508U (en) | 2023-03-21 | 2023-03-21 | Soluble metal bottom plug expansion pipe sleeve repairing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219691508U true CN219691508U (en) | 2023-09-15 |
Family
ID=87963251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320571231.2U Active CN219691508U (en) | 2023-03-21 | 2023-03-21 | Soluble metal bottom plug expansion pipe sleeve repairing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219691508U (en) |
-
2023
- 2023-03-21 CN CN202320571231.2U patent/CN219691508U/en active Active
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