CN203685094U - Layered sealing, separating and repairing device for expansion pipes with multiple clamped sleeves for long-segment casing damage well - Google Patents
Layered sealing, separating and repairing device for expansion pipes with multiple clamped sleeves for long-segment casing damage well Download PDFInfo
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- CN203685094U CN203685094U CN201320843317.2U CN201320843317U CN203685094U CN 203685094 U CN203685094 U CN 203685094U CN 201320843317 U CN201320843317 U CN 201320843317U CN 203685094 U CN203685094 U CN 203685094U
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- expansion tube
- expansion
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- prosthetic device
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Abstract
The utility model provides a layered sealing, separating and repairing device for expansion pipes with multiple clamped sleeves for a long-segment casing damage well. The device comprises an expansion pipe group and a central pipe which can extend into the expansion pipe group in a sliding mode, wherein an axial cut-through cavity is formed in the central pipe; the expansion pipe group is formed by alternatively connecting at least three expansion pipes with sleeves, one sleeve is connected between the two adjacent expansion pipes, the expansion pipes are arranged at the two ends of the expansion pipe group, and a bottom plug is arranged at the bottom of the expansion pipe group; the bottom end of the central pipe is connected with an expansion cone which is provided with an axial passage, the cut-through cavity of the central pipe and the axial passage of the expansion cone form an infusion passage which is through from the top to the bottom, and the expansion cone can be placed at the upper end of the bottom plug. The structure of the device is simple, and requirements for long-segment casing damage well operation for suspension force and sealing performance can be satisfied; layered separation and seal can be achieved for different layers of a borehole which needs to be separated and sealed, so that different layers are independent, which is favorable for subsequent layered water injection or oil extraction.
Description
Technical field
The utility model relates to the expansion tube in petroleum industry, particularly a kind of long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device being applied in drilling well, completion and oil recovery, well workover.
Background technology
Oil field is after long production, because the impact of the factors such as complicated fault, abnormal formation stress, saline bed, highly mineralized formation brines, increasing yield and injection measure, Casing Failure there will be damage in various degree, numerous casing failure wells, have a strong impact on the survival and development in oil field, brought huge economic loss to oilfield exploitation.
To the reparation of casing damaged well, there are the methods such as mechanical shaping, chemical renovation technique, expandable casing patching technology.Wherein, expandable casing patching technology is the new technology being surging forward in recent years, damaged sleeve pipe is carried out to effective reparation, and it can be applicable to the operation process such as drilling well, completion and oil recovery, well workover.
Expansion tube casing patching technology is that one section of good tubing string of ductility is lowered in damaged Oil/gas Well sleeve pipe, after grappling, with high-pressure work liquid drive expansion cone from bottom to top by tubing string distending, tubing string after expansion permanent deformation is close on outer layer sleeve, two ends are with potted component, along with expansion tube together jam-packed is on outer layer sleeve, guarantee that inflated tube post can thoroughly block leakage sleeve pipe.
Although the subsidy length of bulged tube technology is not limit, the well damaging for long section, all adopts expandable casing patching reparation, and technical difficulty is larger, and risk is higher, and cost is too high.Conventional overhauling technology reparation difficulty is larger, become well less, and sealing effectiveness is not good enough after repairing, and cannot realize hierarchically dividing sealing to the different layers position of well, between layers cannot be independent.
Utility model content
For the problem of above-mentioned prior art, the purpose of this utility model is to propose a kind of long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device, simple in structure, can meet the requirement of long section casing damaged well operation to suspension force and sealing; For the different layers position of well that needs parting seal, can realize hierarchically dividing sealing, by independent different layer positions, be conducive to subsequent hierarchy water filling or oil recovery.
In order to achieve the above object, the utility model proposes a kind of long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device, described device comprises expansion tube group and can stretch into slidably the central tube of described expansion tube group, described central tube has axial perforation chamber, described expansion tube group is alternately formed by connecting by least three expansion tubes and sleeve pipe, described in adjacent two, between expansion tube, be connected with a sleeve pipe, and described expansion tube group two ends are expansion tube, it is stifled that described expansion tube group bottom is provided with the end, described central tube bottom is connected with the swollen cone with axial passage, the perforation chamber of described central tube and the axial passage of described swollen cone form the infusion channel of up/down perforation, described swollen cone can be placed in the described end and block end.
Preferably, described sleeve pipe is integral joint casing.
Preferably, described expansion tube group is alternately formed by connecting by 3 described expansion tubes and 2 described integral joint casings, 3 described expansion tubes are respectively expansion tube, middle expansion tube, lower expansion tube, 2 described integral joint casings are respectively integral joint casing and lower integral joint casing, described upper integral joint casing connects described upper expansion tube and described middle expansion tube, and described lower integral joint casing connects described middle expansion tube and described lower expansion tube.
Preferably, the stifled stifled lower end in the lower end of described lower expansion tube and the lower end of described lower expansion tube and the described end that is placed in is threaded at the described end.
Preferably, between described expansion tube and described integral joint casing, all connect by variable buckle joint.
Preferably, between described variable buckle joint and described expansion tube, described integral joint casing, be threaded.
Preferably, the bottom of described central tube is connected with described swollen cone by a jump ring.
Preferably, the inside wall of described swollen cone offers interior seal groove, in described interior seal groove, is provided with inner seal ring.
Preferably, the lateral wall of described swollen cone offers external seal groove, in described external seal groove, is provided with exterior seal ring.
Preferably, the stifled lateral wall in the described end offers the stifled seal groove in the end, is provided with the stifled sealing ring in the end in the stifled seal groove in the described end.
Known by above structure, in above-mentioned long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device, by upper expansion tube, middle expansion tube and lower expansion tube, upper integral joint casing and lower integral joint casing are hung in long section casing damaged well, sealed at both ends, two ends hang, make suspension force and the sealing of the reparation of long section casing damaged well obtain guarantee, expandable casing patching technology and sleeve pipe second completion technology are carried out to effective combination.
Secondly,, for the more long section casing damaged well in layer position, the strata pressure of different layers position is different with interlayer situation, easily produces interlayer blowby.While using the more long section casing damaged well in long section of the present utility model casing damaged well expansion tube many cutting ferrules pipe layering packing prosthetic device repair layer position, the casing damaged well of different layers position can corresponding different expansion tube, can realize hierarchically dividing sealing, make between different layers position separately, effectively avoid the blowby of different layers interdigit.Meanwhile, if desired water filling or oil recovery are carried out in different layer positions in the future, can open the corresponding expansion tube in equivalent layer position, can carry out seperated layer water injection or oil recovery.
In addition, device of the present utility model can be according to field produces demand, bore the situation of completion in conjunction with single well location, adjust the position of the utility model device, also can increase or reduce according to Production requirement the quantity of expansion tube in the utility model expansion tube group, thereby regulate the length of the utility model prosthetic device, meet the different needs of repairing length.
Moreover apparatus structure of the present utility model is simple, construction method is easy, and three expansion tubes adopt a swollen cone, can complete expansion.
Finally, use device reparation of the present utility model after borehole size can meet the normal Production requirement in oil field, and construction risk is low, cost is low, has the stronger market competitiveness.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model device;
Fig. 2 is the partial schematic diagram that on the utility model device, expansion tube is connected with upper integral joint casing;
Fig. 3 is the partial schematic diagram that on the utility model device, integral joint casing is connected with middle expansion tube;
Fig. 4 is the partial schematic diagram that in the utility model device, expansion tube is connected with lower integral joint casing;
Fig. 5 is the partial schematic diagram that under the utility model device, integral joint casing is connected with lower expansion tube;
Fig. 6 is partial schematic diagram stifled at the bottom of the utility model device and that central tube is connected with swollen cone.
Description of reference numerals:
1-central tube, 2-is swollen cone, seal groove in 21-, 22-external seal groove, the upper expansion tube of 3-, the upper integral joint casing of 4-, expansion tube in 5-, integral joint casing under 6-, expansion tube under 7-, blocks up at the bottom of 8-, blocks up seal groove at the bottom of 81-, 9-jump ring, 34,45,56,67-variable buckle joint.
The specific embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing the specific embodiment of the present utility model is described.
The utility model proposes a kind of long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device, as shown in Fig. 1-Fig. 6, packing prosthetic device of the present utility model comprises expansion tube group and can stretch into slidably the central tube 1 of described expansion tube group, central tube 1 has axial perforation chamber, described expansion tube group is alternately formed by connecting by least three expansion tubes and sleeve pipe, described in adjacent two, between expansion tube, be connected with a sleeve pipe, and described expansion tube group two ends are expansion tube, thereby realize sealed at both ends, two ends hang, the bottom of described expansion tube group is located at the end stifled 8, it is the bottom that is positioned at the expansion tube of described expansion tube group bottom the end stifled 8, the bottom of central tube 1 is connected with swollen cone 2, and swollen cone 2 has axial passage, and the perforation chamber of central tube 1 and the axial passage of swollen cone 2 form the infusion channel of up/down perforation.Between the inwall of the outer wall of central tube 1 and described expansion tube group, have certain interval, making can relative sliding between central tube 1 and described expansion tube group.Central tube 1 slides while stretching into described expansion tube group, and swollen cone 2 can be placed in the upper end at the end stifled 8.
In order to expand the tubing string internal diameter after the utility model is repaired, the preferred integral joint casing of sleeve pipe.In a specific embodiment of the present utility model, the sleeve pipe of reparation is 51/2 " time, casing wall thickness 7.72mm, internal diameter 124.3mm, can select 41/2 " integral joint casing, the about 100mm of its internal diameter, 41/2 ", effectively expanded the tubing string internal diameter after repairing.
Alternately be formed by connecting as the connection of example explanation expansion tube group by 3 expansion tubes and 2 integral joint casings with described expansion tube group, as shown in Fig. 1-Fig. 6, described expansion tube is connected in sequence by upper expansion tube 3, upper integral joint casing 4, middle expansion tube 5, lower integral joint casing 6 and lower expansion tube 7.In actual use, the length of the well of separate sealed as required, selects the quantity of suitable expansion tube and integral joint casing, and alternately connects to form expansion tube group by the two.
For meeting connection between different model expansion tube and integral joint casing and the sealing of connection, use variable buckle joint 34 connect upper expansion tube 3 and upper integral joint casing 4, use variable buckle joint 45 is connected integral joint casing 4 and middle expansion tube 5, use variable buckle joint 56 be connected in expansion tube 5 be connected with lower integral joint casing 6, use variable buckle joint 67 under integral joint casing 6 and lower expansion tube 7.Preferably, between variable buckle joint and each expansion tube, each integral joint casing, be threaded connection, connect convenient and sealing is stronger.In a preferred embodiment,, also can adopt and be threaded at the lower expansion tube 7 of described expansion tube group and end stifled 8.In order to improve the sealing between the lateral wall at the inside wall of lower expansion tube 7 and the end stifled 8, the lateral wall at the end stifled 8 is provided with the stifled seal groove 81 in the end, in the stifled seal groove 81 in the end, is provided with exterior seal ring.
Described expansion tube group is in the process expanding, the moving swollen cone 2 of belt on central tube 1, need being connected between central tube 1 and swollen cone 2 can bear certain upper lifting force, central tube of the present utility model 1 lower end is connected with swollen cone 2 by jump ring 7, to meet the requirement of upper lifting force between the two.And in order to improve the sealing of central tube 1 and swollen cone 2 combination interfaces, the inside wall that swollen cone 2 is connected with central tube 1 can be offered interior seal groove 21, and at the interior inner seal ring that arranges of interior seal groove 21.
Described central tube 1 can stretch into described expansion tube group slidably, the lateral wall of swollen cone 2 is connected with the inside wall of lower expansion tube 7, in order to improve the sealing of swollen cone 2 and lower expansion tube 7 combination interfaces, the lateral wall of swollen cone 2 is provided with external seal groove 22, in external seal groove 22, is provided with exterior seal ring.
In above-mentioned long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device, by upper expansion tube 3, middle expansion tube 5 and lower expansion tube 7, upper integral joint casing 4 and lower integral joint casing 6 are hung in long section casing damaged well, sealed at both ends, two ends hang, make suspension force and the sealing of the reparation of long section casing damaged well obtain guarantee, expandable casing patching technology and sleeve pipe second completion technology are carried out to effective combination.
Illustrate the operating principle of a kind of many cutting ferrules of the section of length casing damaged well expansion tube pipe layering packing prosthetic device of the present utility model below, as shown in Figure 1:
Step a, inserts the bottom in lower expansion tube 7 by swollen cone 2, then the bottom of lower expansion tube 7, the upper end of swollen cone 2 are inserted in the end stifled 8;
Step b, connect the lower lower end of integral joint casing 6 and the upper end of lower expansion tube 7 by variable buckle joint 67, the lower end of expansion tube 5 and the upper end of lower integral joint casing 6 in connecting by variable buckle joint 56, connect the upper lower end of expansion tube 3 and the upper end of upper integral joint casing 4 by variable buckle joint 34, upper expansion tube 3, upper integral joint casing 4, middle expansion tube 5, lower integral joint casing 6 and lower expansion tube 7 form expansion tube group;
Step c, inserts described expansion tube group by central tube 1, and docks with swollen cone 2 by jump ring 9, and central tube 1 and swollen cone 2 form the infusion channel of up/down perforation;
Steps d, repairs position by subscribing in the device lower going-into-well assembling in step c;
Step e, working solution is injected by the infusion channel high pressure of central tube 1 and swollen cone 2, high-pressure work liquid fills up at the end stifled 8, and working solution liquid level continues to rise, because the maximum outside diameter of swollen cone 2 is greater than the internal diameter of lower expansion tube 7, middle expansion tube 5 and upper expansion tube 3, in lower expansion tube 7 processes of the up process of swollen cone 2, lower expansion tube 7 is expanded, and lower expansion tube 7 completes after expansion, under the effect of working solution hydraulic pressure, swollen cone 2 continues to go upward to middle expansion tube 5 places, completes the expansion of swollen cone 2 centering expansion tubes 5; After middle expansion tube 5 completes, under the effect of working solution hydraulic pressure, swollen cone 2 continues to go upward to expansion tube 3 places, completes the expansion of 2 pairs of upper expansion tubes 3 of swollen cone; In the action of expansion tube 3 in expansion, expansion, the action of expansion tube 5 is identical with the action of the lower expansion tube 7 that expands, all that to promote swollen cone 2 by hydraulic pressure up, the conical surface by swollen cone 2 expands to the body of upper expansion tube 3, middle expansion tube 5 and lower expansion tube 7, simultaneously, if there is the situation that hydraulic coupling is larger in expansion process, consider safety factor, well head can coordinate increase upper lifting force, completes expansion; Complete after the expansion of expansion tube 3, above carry central tube 1 and go out well head;
Step f, the cleaning end, blocks up 8, completes reparation.
Long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device of the present utility model is simple in structure, from long many cutting ferrules of section casing damaged well expansion tube pipe layering packing restorative procedure of the present utility model, this device construction technology is easy, and upper expansion tube 3, middle expansion tube 5 and lower expansion tube 7 adopt a swollen cone 2, can complete expansion.
The foregoing is only the schematic specific embodiment of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the modification under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.And it should be noted that, each ingredient of the present utility model is not limited in above-mentioned overall applicability, each technical characterictic of describing in manual of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model has naturally been contained other combinations relevant with this case innovative point and specifically application.
Claims (10)
1. one kind long section many cutting ferrules of casing damaged well expansion tube pipe layering packing prosthetic device, it is characterized in that, described device comprises expansion tube group and can stretch into slidably the central tube of described expansion tube group, described central tube has axial perforation chamber, described expansion tube group is alternately formed by connecting by least three expansion tubes and sleeve pipe, described in adjacent two, between expansion tube, be connected with a sleeve pipe, and described expansion tube group two ends are expansion tube, it is stifled that described expansion tube group bottom is provided with the end, described central tube bottom is connected with the swollen cone with axial passage, the perforation chamber of described central tube and the axial passage of described swollen cone form the infusion channel of up/down perforation, described swollen cone can be placed in the described end and block end.
2. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 1, is characterized in that, described sleeve pipe is integral joint casing.
3. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 2, it is characterized in that, described expansion tube group is alternately formed by connecting by 3 described expansion tubes and 2 described integral joint casings, 3 described expansion tubes are respectively expansion tube, middle expansion tube, lower expansion tube, 2 described integral joint casings are respectively integral joint casing and lower integral joint casing, described upper integral joint casing connects described upper expansion tube and described middle expansion tube, and described lower integral joint casing connects described middle expansion tube and described lower expansion tube.
4. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 3, is characterized in that, the described end is stifled to be placed in the stifled lower end in the lower end of described lower expansion tube and the lower end of described lower expansion tube and the described end and to be threaded.
5. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 2, is characterized in that, between described expansion tube and described integral joint casing, all connects by variable buckle joint.
6. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 5, is characterized in that, between described variable buckle joint and described expansion tube, described integral joint casing, is threaded.
7. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 1, is characterized in that, the bottom of described central tube is connected with described swollen cone by a jump ring.
8. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 1, is characterized in that, the inside wall of described swollen cone offers interior seal groove, in described interior seal groove, is provided with inner seal ring.
9. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 1, is characterized in that, the lateral wall of described swollen cone offers external seal groove, in described external seal groove, is provided with exterior seal ring.
10. long many cutting ferrules of section casing damaged well expansion tube pipe layering packing prosthetic device according to claim 1, is characterized in that, the stifled lateral wall in the described end offers the stifled seal groove in the end, is provided with the stifled sealing ring in the end in the stifled seal groove in the described end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843317.2U CN203685094U (en) | 2013-12-19 | 2013-12-19 | Layered sealing, separating and repairing device for expansion pipes with multiple clamped sleeves for long-segment casing damage well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843317.2U CN203685094U (en) | 2013-12-19 | 2013-12-19 | Layered sealing, separating and repairing device for expansion pipes with multiple clamped sleeves for long-segment casing damage well |
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| Publication Number | Publication Date |
|---|---|
| CN203685094U true CN203685094U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320843317.2U Expired - Fee Related CN203685094U (en) | 2013-12-19 | 2013-12-19 | Layered sealing, separating and repairing device for expansion pipes with multiple clamped sleeves for long-segment casing damage well |
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| Country | Link |
|---|---|
| CN (1) | CN203685094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986776A (en) * | 2015-02-05 | 2016-10-05 | 中国石油天然气股份有限公司 | Repairing method for damaged casing pipe of oil-water well |
| CN111485844A (en) * | 2019-01-28 | 2020-08-04 | 中国石油化工股份有限公司 | Continuous plugging construction method for multi-section leakage points of oil-water well |
-
2013
- 2013-12-19 CN CN201320843317.2U patent/CN203685094U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986776A (en) * | 2015-02-05 | 2016-10-05 | 中国石油天然气股份有限公司 | Repairing method for damaged casing pipe of oil-water well |
| CN105986776B (en) * | 2015-02-05 | 2019-02-15 | 中国石油天然气股份有限公司 | A kind of restorative procedure of Casing Failure breakage |
| CN111485844A (en) * | 2019-01-28 | 2020-08-04 | 中国石油化工股份有限公司 | Continuous plugging construction method for multi-section leakage points of oil-water well |
| CN111485844B (en) * | 2019-01-28 | 2022-03-08 | 中国石油化工股份有限公司 | Continuous plugging construction method for multi-section leakage points of oil-water well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20211219 |