CN102900893A - Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe - Google Patents
Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe Download PDFInfo
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- CN102900893A CN102900893A CN2012104117180A CN201210411718A CN102900893A CN 102900893 A CN102900893 A CN 102900893A CN 2012104117180 A CN2012104117180 A CN 2012104117180A CN 201210411718 A CN201210411718 A CN 201210411718A CN 102900893 A CN102900893 A CN 102900893A
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- pipe clamp
- cartridge type
- type pipe
- inner sleeve
- annular space
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 150000001875 compounds Chemical class 0.000 claims description 39
- 230000000903 blocking effect Effects 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 12
- 238000007569 slipcasting Methods 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 18
- 239000010410 layer Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000007634 remodeling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention discloses a plugging device and plugging method for an annular space of a submarine double-layer oil conveying pipe. The oil conveying pipe comprise an outer pipe (14) and an inner pipe (13); one end of the inner pipe (13) stretches out of the outer pipe (14); the plugging device comprises an inner sleeve type pipe clamp (1) and an outer sleeve type pipe clamp (7); one end of the inner sleeve type pipe clamp (1) is matched with the outer wall of the outer pipe (14) in a sealing manner while the other end thereof is matched with the outer wall of the inner pipe (13) in the sealing manner; the inner sleeve type pipe clamp (1) is internally filled with a sealing agent (5); the outer sleeve type pipe clamp (7) is sleeved outside the inner sleeve type pipe clamp (1); one end of the outer sleeve type pipe clamp (7) is matched with the outer wall of the outer pipe (14) in the sealing manner while the other end thereof is matched with the outer wall of the inner pipe (13) in the sealing manner; and the outer sleeve type pipe clamp (7) is internally filled with concrete (12). As the clamp-in-clamp form is adopted, and the sealing agent and the concrete material are used in the invention, the problem of sealing failure caused by thermal elongation which is resulted from the change of the oil temperature is solved.
Description
Technical field
This practicality relates to a kind of submerged pipeline repairing device, specifically refers to a kind of seabed double-layer oil delivery pipe annular space blocking device, the invention still further relates to a kind of method for blocking.
Background technique
At present, submerged pipeline has single, double layer pipe, and mono-layer tube is mainly used in the gentle single medium transport of planting of marine water; Bimetallic tube then is used for easily solidifying crude oil or mixed defeated (oil, gas, water) combining medium is carried.Because the chemical element composition in crude oil and the mixed defeated medium is various, thereby can the pipeline inner tubal wall of carrying be corroded, and has caused the leakage of pipeline through long-time corrosion, can force when serious to produce to stop, and causes the economic loss in oil field.Be such loss that reduces of minimum degree, repair damaging pipeline quickly.At present for the reparation main difficulty of bimetallic tube in the shutoff of inner and outer pipe annular space, the method for existing shutoff has annular groove cavity forming injecting glue method and hydraulic fixture lateral extrusion deformation method.
Annular groove cavity forming injecting glue method is by oil hydraulic cylinder or the external force such as knock and apply in the annular space that makes this device clamp-on inner and outer pipe with prefabricated annular plugging device, form an annular groove cavity, load onto the sealing compound injection tool, the sealing compounds such as fast cure polyesters base resin, siloxane are passed through in the annular groove cavity of sealing compound injection tool high pressure injection moulding, the injecting glue amount should be enough to guarantee to fill whole sealing compound space, has namely finished the shutoff of annular space after it solidifies.
Hydraulic fixture lateral extrusion deformation method is that hydraulic fixture is the firm nested structure of half opposite opened, and the upper end of two semi-circular segments links by hinges, and the internal diameter of closed rear whole circumference is definite according in advance theoretical calculating and experiment.When hydraulic fixture lay put in place after, oil hydraulic cylinder applies closing force, impel the firm nested structure of half opposite opened closed, because the inside radius after the closure is less than the free outer radius of outer layer pipe (generally be reduced to radial ringed gap original about 1/2), so that outer layer pipe produces larger controlled plastic deformation and Material Flow, make it to arrive the sturdy effect of annular space axial seal through all die heads in the firm cover of particular design.Load onto and adjust the two rows clamping bolt, reach and keeps axial seal so that the slide contact face of firm cover is compressed axial gasket, load onto the sealing gasket flange at two end faces at last, the compression axial gasket reaches and keeps axial seal.Permanently stay afterwards on the pipeline and need not remove.
Annular groove cavity forming injecting glue method and hydraulic fixture lateral extrusion deformation method all exist because the variation of inner tube conveying crude oil temperature can cause the elongation of inner tube heat expansion, cause annular shutoff to be lost efficacy.
Above-mentioned discussion content purpose is to introduce to the reader All aspects of of technology that may be relevant with the All aspects of of the present invention that below will be described and/or advocate, believe that this discussion content helps to provide background information for the reader, to be conducive to understanding better All aspects of of the present invention, therefore, should be appreciated that it is to read these discussions with this angle, rather than admit prior art.
Summary of the invention
The object of the invention is to avoid deficiency of the prior art and a kind of seabed double-layer oil delivery pipe annular space shutoff dress and method for blocking are provided, it adopts card form in the card, be equipped with sealing compound and concrete material, solve the oil temperature variation and cause that the heat expansion elongation causes the problem of seal failure.
Purpose of the present invention is achieved through the following technical solutions:
A kind of seabed double-layer oil delivery pipe annular space blocking device is provided, described transport pipe comprises outer tube and inner tube, inner tube one end stretches out in outer tube, described blocking device comprises inner sleeve cartridge type pipe clamp, overcoat cartridge type pipe clamp, one end and the outer tube outer wall of described inner sleeve cartridge type pipe clamp are sealed and matched, the other end and outer wall of inner tube are sealed and matched, be filled with sealing compound in the inner sleeve cartridge type pipe clamp, described overcoat cartridge type pipe clamp is enclosed within outside the inner sleeve cartridge type pipe clamp, one end and the outer tube outer wall of overcoat cartridge type pipe clamp are sealed and matched, the other end and outer wall of inner tube are sealed and matched, and are filled with concrete in the overcoat cartridge type pipe clamp.
Wherein, described blocking device comprises several structure pipe clamps, and it is inner that described structural tube is positioned in described overcoat cartridge type pipe clamp, and the interval is fixed on described outer tube and the inner tube.
Wherein, the inwall of described overcoat cartridge type pipe clamp is arranged at intervals with annular rib.
Wherein, described inner sleeve cartridge type pipe clamp, overcoat cartridge type pipe clamp are hinge-type cartridge type pipe clamp.
Wherein, described inner sleeve cartridge type pipe clamp bottom is provided with the sealing compound inlet, and top is provided with the sealing compound outlet.
Wherein, the two ends of described inner sleeve cartridge type pipe clamp are respectively equipped with to fill holds flange tightly, and the two ends of inner sleeve cartridge type pipe clamp are held flange tightly by filling and are sealed and matched with outer tube, outer wall of inner tube respectively.
Wherein, described overcoat cartridge type pipe clamp bottom is provided with grouting port, and top is provided with grout outlet.
Wherein, the two ends of described overcoat cartridge type pipe clamp are respectively equipped with card top flange, and the two ends of overcoat cartridge type pipe clamp are sealed and matched with outer tube, outer wall of inner tube respectively by card top flange.
A kind of seabed double-layer oil delivery pipe annular space method for blocking comprises the steps:
By the inner sleeve cartridge type pipe clamp of slinging of loop wheel machine on the ship, entry is installed under water under diver's guide, when inner sleeve cartridge type pipe clamp one end is enclosed within on the outer tube, when the other end is enclosed within on the inner tube inner tube, the diver carries out two ends and fills the installation of holding flange tightly, the underwater sealing agent injection device that utilization is carried after finishing is connected on the sealing compound inlet of inner sleeve cartridge type pipe clamp, carry out the injecting operation, when overflowing from the sealing compound outlet Deng sealing compound, stop sealing compound and inject operation, screw on sealing compound inlet and sealing compound the outlet plug wire, the installation of inner sleeve cartridge type pipe clamp;
The loop wheel machine structure pipe clamp of slinging on the ship, the diver guides behind the corresponding mounting point of inner and outer tubes, and diver under water screwing structure pipe clamp bolt has namely finished installation;
The loop wheel machine overcoat cartridge type pipe clamp of slinging on the ship, under the diver guides, it is enclosed within outside inner sleeve cartridge type pipe clamp and the structure pipe clamp, and an end is enclosed within on the outer tube, when the other end is enclosed within on the inner tube inner tube, the diver carries out card top, two ends flange and installs, and the slip casting pipeline with slip casting machine after finishing is connected on the grouting port of overcoat cartridge type pipe clamp, carries out the slip casting operation, when overflowing from grout outlet Deng concrete mortar, stop the slip casting operation, the plug wire of screw on grouting port and grout outlet, the installation of overcoat cartridge type pipe clamp.
Beneficial effect of the present invention: owing to having adopted above-mentioned structure, inject sealing compound in the inner sleeve cartridge type pipe clamp of the present invention, be hoop space plugged zone one after it solidifies, this layer only provides sealability; Inject concrete in the overcoat cartridge type pipe clamp, behind overcuring, outer pipe clamp and inner tube, outer tube are become one, can provide pipeline this moment axially and radially stressed, overcome inner tube and caused when oil temperature changes that its heat expansion is extended and cause the shutoff Problem of Failure.
Description of drawings
The invention will be further described to utilize accompanying drawing, but the embodiment in the accompanying drawing does not consist of any limitation of the invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation of seabed double-layer oil delivery pipe annular space blocking device.
Fig. 2 is that inner sleeve cartridge type pipe clamp is mounted to the view on outer tube and the inner tube.
Fig. 3 is that the structure pipe clamp is mounted to the view on outer tube and the inner tube.
Fig. 4 is that overcoat cartridge type pipe clamp is mounted to the view on outer tube and the inner tube.
Embodiment
In order to make those skilled in the art understand better technological scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments, need to prove, in the situation that do not conflict, the application's embodiment and the feature among the embodiment can make up mutually.
Core of the present invention is to provide a kind of seabed double-layer oil delivery pipe annular space blocking device and method for blocking, and it adopts card form in the card, is equipped with sealing compound and concrete material, solves the oil temperature variation and causes that the heat expansion elongation causes the problem of seal failure.Its structural type simplicity of design, material obtains easily, thereby has significantly saved expense.
As shown in Figure 1, seabed of the present invention double-layer oil delivery pipe annular space blocking device, described transport pipe comprises outer tube 14 and inner tube 13, and inner tube 13 1 ends stretch out in outer tube 14, and outer tube 14 and inner tube 13 consist of the double-layer oil delivery pipe line.Described blocking device comprises inner sleeve cartridge type pipe clamp 1, overcoat cartridge type pipe clamp 7, and described inner sleeve cartridge type pipe clamp 1, overcoat cartridge type pipe clamp 7 are hinge-type cartridge type pipe clamp.One end of described inner sleeve cartridge type pipe clamp 1 and outer tube 14 outer walls are sealed and matched, the other end and inner tube 13 outer walls are sealed and matched, the two ends of described inner sleeve cartridge type pipe clamp 1 are respectively equipped with to fill holds flange 2 tightly, and the two ends of inner sleeve cartridge type pipe clamp 1 are held flange 2 tightly by filling and are sealed and matched with outer tube 14, inner tube 13 outer walls respectively.Be filled with sealing compound 5 in the described inner sleeve cartridge type pipe clamp 1, described inner sleeve cartridge type pipe clamp 1 bottom is provided with sealing compound inlet 3, and top is provided with sealing compound outlet 4.Described overcoat cartridge type pipe clamp 7 is enclosed within outside the inner sleeve cartridge type pipe clamp 1, one end of overcoat cartridge type pipe clamp 7 and outer tube 14 outer walls are sealed and matched, the other end and inner tube 13 outer walls are sealed and matched, the two ends of described overcoat cartridge type pipe clamp 7 are respectively equipped with card top flange 8, and the two ends of overcoat cartridge type pipe clamp 7 are sealed and matched with outer tube 14, inner tube 13 outer walls respectively by card top flange 8.Be filled with concrete 12 in the overcoat cartridge type pipe clamp 7, described overcoat cartridge type pipe clamp 7 bottoms are provided with grouting port 10, and top is provided with grout outlet 11.
Described blocking device comprises several structure pipe clamps 6, and described structure pipe clamp 6 is positioned at described overcoat cartridge type pipe clamp 7 inside, and the interval is fixed on described outer tube 14 and the inner tube 13, and the effect of structure pipe clamp 6 is to improve concrete at the adhesion of outer tube 14 and inner tube 13.The inwall of described overcoat cartridge type pipe clamp 7 is arranged at intervals with annular rib 9.The effect of annular rib is to improve the outside adhesion of telescopic pipe clamp of concrete.
When the present invention installs, one 0.9 meter long inner sleeve cartridge type pipe clamp 1 being installed first at bimetallic tube annular space place first, is the sealing compound inlet in the lower end of interior pipe clamp, and the upper end is the sealing compound outlet.Interior pipe clamp one stomidium directly is outer tube diameter, the other end aperture is diameter of inner pipe, tight a bolt and with nut jig generation clamping action is fixed on inner tube, the outer tube, and the filling of jig is held flange component tightly in the clamping of the two ends of pipe, produced a sealing radially, by injecting sealing compound in the inside pipe clamp confined space of sealing compound inlet, make it be full of whole interior pipe clamp inner space afterwards, until sealing compound overflows from the sealing compound outlet.Be hoop space plugged zone one after it solidifies, this layer only provides sealability.
One long 9 meters overcoat cartridge type pipe clamp is installed afterwards again, and there are 4 grouting ports the pipe clamp lower end outside, and there are 4 grout outlets the upper end.Diameter can be installed by inner sleeve cartridge type pipe clamp 1 smoothly greater than inner sleeve cartridge type pipe clamp 1.1.5 meters Chang'an, every interval fill a structure pipe clamp take the inner and outer pipe section as basic point on inside and outside pipeline, and it act as and improves the adhesion of concrete on outer wall on the pipeline; Weldering one radial clearance bar in 0.5 meter at every interval on the inwall of telescopic pipe clamp outside, its effect is to improve the outside adhesion of telescopic pipe clamp of concrete, overcoat cartridge type pipe clamp one stomidium directly is outer tube diameter, the other end aperture is diameter of inner pipe, and the two ends shutoff of pipe clamp needs two hinge members on the flange of tightening card top, make outer tube be stuck in the radial clamping of pipe, produced a sealing radially, to form the seal space of outer pipe clamp.Inject concrete from grouting port afterwards, until overflow from grout outlet, show that concrete has been filled with in the space in the outer pipe clamp, behind overcuring, outer pipe clamp and pipeline are become one, can provide pipeline axially this moment and radially stressed, overcome inner tube and caused when oil temperature changes that its heat expansion is extended and cause the shutoff Problem of Failure.
Extremely shown in Figure 4 such as Fig. 2, seabed of the present invention double-layer oil delivery pipe annular space method for blocking, it adopts above-mentioned blocking device, specifically comprises the steps:
By the inner sleeve cartridge type pipe clamp 1 of slinging of loop wheel machine on the ship, entry is installed under water under diver's guide, when inner sleeve cartridge type pipe clamp 1 one ends are enclosed within on the outer tube 14, when the other end is enclosed within on the inner tube inner tube 13, the diver carries out two ends and fills the installation of holding flange 2 tightly, the underwater sealing agent injection device that utilization is carried after finishing is connected on the sealing compound inlet 3 of inner sleeve cartridge type pipe clamp 1, carry out the injecting operation, when overflowing from sealing compound outlet 4 Deng sealing compound, stop sealing compound and inject operation, sealing compound inlet 3 and sealing compound outlet 4 the plug wire of screwing on, 1 installation of inner sleeve cartridge type pipe clamp;
The loop wheel machine structure pipe clamp 6 of slinging on the ship, the diver guides behind inner tube 13 and outer tube 14 corresponding mounting points, and diver under water screwing structure pipe clamp 6 bolts has namely finished installation;
The loop wheel machine overcoat cartridge type pipe clamp 7 of slinging on the ship, under the diver guides, it is enclosed within outside inner sleeve cartridge type pipe clamp 1 and the structure pipe clamp 6, and an end is enclosed within on the outer tube 14, when the other end is enclosed within on the inner tube inner tube 13, the diver carries out card top, two ends flange 8 and installs, slip casting pipeline with slip casting machine after finishing is connected on the grouting port 10 of overcoat cartridge type pipe clamp 7, carry out the slip casting operation, when overflowing from grout outlet 11 Deng concrete 12 slurries, stop the slip casting operation, the screw on plug wire of grouting port 10 and grout outlet 11,7 installations of overcoat cartridge type pipe clamp.
Set forth a lot of details so that fully understand the present invention in the top description, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as limiting the scope of the invention.
In a word; although the present invention has exemplified above-mentioned preferred implementation, should illustrate, although those skilled in the art can carry out various variations and remodeling; unless such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (9)
1. seabed double-layer oil delivery pipe annular space blocking device, described transport pipe comprises outer tube (14) and inner tube (13), inner tube (13) one ends stretch out in outer tube (14), it is characterized in that: described blocking device comprises inner sleeve cartridge type pipe clamp (1), overcoat cartridge type pipe clamp (7), one end of described inner sleeve cartridge type pipe clamp (1) and outer tube (14) outer wall are sealed and matched, the other end and inner tube (13) outer wall is sealed and matched, be filled with sealing compound (5) in the inner sleeve cartridge type pipe clamp (1), described overcoat cartridge type pipe clamp (7) is enclosed within outside the inner sleeve cartridge type pipe clamp (1), one end of overcoat cartridge type pipe clamp (7) and outer tube (14) outer wall are sealed and matched, the other end and inner tube (13) outer wall is sealed and matched, and is filled with concrete (12) in the overcoat cartridge type pipe clamp (7).
2. seabed according to claim 1 double-layer oil delivery pipe annular space blocking device, it is characterized in that: described blocking device comprises several structure pipe clamps (6), described structure pipe clamp (6) is positioned at described overcoat cartridge type pipe clamp (7) inside, and the interval is fixed on described outer tube (14) and the inner tube (13).
3. seabed according to claim 1 double-layer oil delivery pipe annular space blocking device, it is characterized in that: the inwall of described overcoat cartridge type pipe clamp (7) is arranged at intervals with annular rib (9).
4. according to claim 1 and 2 or 3 described seabed double-layer oil delivery pipe annular space blocking devices, it is characterized in that: described inner sleeve cartridge type pipe clamp (1), overcoat cartridge type pipe clamp (7) are hinge-type cartridge type pipe clamp.
5. seabed according to claim 4 double-layer oil delivery pipe annular space blocking device, it is characterized in that: described inner sleeve cartridge type pipe clamp (1) bottom is provided with sealing compound inlet (3), and top is provided with sealing compound outlet (4).
6. seabed according to claim 5 double-layer oil delivery pipe annular space blocking device, it is characterized in that: the two ends of described inner sleeve cartridge type pipe clamp (1) are respectively equipped with to fill holds flange (2) tightly, and the two ends of inner sleeve cartridge type pipe clamp (1) are held flange (2) tightly by filling and are sealed and matched with outer tube (14), inner tube (13) outer wall respectively.
7. seabed according to claim 4 double-layer oil delivery pipe annular space blocking device, it is characterized in that: described overcoat cartridge type pipe clamp (7) bottom is provided with grouting port (10), and top is provided with grout outlet (11).
8. seabed according to claim 7 double-layer oil delivery pipe annular space blocking device, it is characterized in that: the two ends of described overcoat cartridge type pipe clamp (7) are respectively equipped with card top flange (8), and the two ends of overcoat cartridge type pipe clamp (7) are sealed and matched with outer tube (14), inner tube (13) outer wall respectively by card top flange (8).
9. a seabed double-layer oil delivery pipe annular space method for blocking is characterized in that, comprises the steps:
By the inner sleeve cartridge type pipe clamp (1) of slinging of loop wheel machine on the ship, entry is installed under water under diver's guide, when inner sleeve cartridge type pipe clamp (1) one end is enclosed within on the outer tube (14), when the other end is enclosed within on the inner tube inner tube (13), the diver carries out two ends and fills the installation of holding flange (2) tightly, the underwater sealing agent injection device that utilization is carried after finishing is connected on the sealing compound inlet (3) of inner sleeve cartridge type pipe clamp (1), carry out the injecting operation, export (4) when overflowing Deng sealing compound from sealing compound, stop sealing compound and inject operation, screw on sealing compound inlet (3) and sealing compound the outlet (4) plug wire, inner sleeve cartridge type pipe clamp (1) installation;
The loop wheel machine structure pipe clamp (6) of slinging on the ship, the diver guides behind inner tube (13) and the corresponding mounting point of outer tube (14), and diver under water screwing structure pipe clamp (6) bolt has namely finished installation;
The loop wheel machine overcoat cartridge type pipe clamp (7) of slinging on the ship, under the diver guides, it is enclosed within outside inner sleeve cartridge type pipe clamp (1) and the structure pipe clamp (6), and an end is enclosed within on the outer tube (14), when the other end is enclosed within on the inner tube inner tube (13), the diver carries out card top, two ends flange (8) and installs, slip casting pipeline with slip casting machine after finishing is connected on the grouting port (10) of overcoat cartridge type pipe clamp (7), carry out the slip casting operation, Deng concrete 12 slurries from grout outlet (11) when overflowing, stop the slip casting operation, the screw on plug wire of grouting port (10) and grout outlet (11), overcoat cartridge type pipe clamp (7) installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411718.0A CN102900893B (en) | 2012-10-25 | 2012-10-25 | Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411718.0A CN102900893B (en) | 2012-10-25 | 2012-10-25 | Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102900893A true CN102900893A (en) | 2013-01-30 |
| CN102900893B CN102900893B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210411718.0A Expired - Fee Related CN102900893B (en) | 2012-10-25 | 2012-10-25 | Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe |
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| Country | Link |
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| CN (1) | CN102900893B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161142A (en) * | 2020-10-31 | 2021-01-01 | 杨新超 | Pipeline water injection valve and seabed conveying pipeline using same |
| CN112253850A (en) * | 2020-09-23 | 2021-01-22 | 李明秀 | Submarine pipeline seals maintenance of equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253850A (en) * | 2020-09-23 | 2021-01-22 | 李明秀 | Submarine pipeline seals maintenance of equipment |
| CN112161142A (en) * | 2020-10-31 | 2021-01-01 | 杨新超 | Pipeline water injection valve and seabed conveying pipeline using same |
| CN112161142B (en) * | 2020-10-31 | 2022-04-05 | 山东中力高压阀门股份有限公司 | Pipeline water injection valve and seabed conveying pipeline using same |
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| Publication number | Publication date |
|---|---|
| CN102900893B (en) | 2014-11-26 |
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Address after: Chinese CNOOC Building No. 25 Beijing 100010 Dongcheng District Chaoyangmen North Street Applicant after: China National Offshore Oil Corporation Applicant after: CNOOC (China) Limited Zhanjiang Branch Applicant after: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Address before: Chinese CNOOC Building No. 25 Beijing 100010 Dongcheng District Chaoyangmen North Street Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC (China) Limited Zhanjiang Branch Applicant before: Haiwangxing Ocean Engineering Technology Co., Ltd, Tianjin City |
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