CN201660896U - Injection gas lifting structure for installing seabed spud leg type structural objects - Google Patents
Injection gas lifting structure for installing seabed spud leg type structural objects Download PDFInfo
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- CN201660896U CN201660896U CN2010201040681U CN201020104068U CN201660896U CN 201660896 U CN201660896 U CN 201660896U CN 2010201040681 U CN2010201040681 U CN 2010201040681U CN 201020104068 U CN201020104068 U CN 201020104068U CN 201660896 U CN201660896 U CN 201660896U
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- spud leg
- seabed
- pressure
- spud
- pipe
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Abstract
The utility model discloses an injection gas lifting structure for installing seabed spud leg type structural objects, which comprises a support frame, wherein a sonar probe is arranged on the support frame, a plurality of spud legs in hollow structures are fixed under the support frame, the bottom of the spud legs is provided with sealed water tanks, high-pressure water pipes, water supplementing pipes and high-pressure gas pipes are arranged in the spud legs, the high-pressure water pipes are communicated with the sealed water tanks, a plurality of spray nozzles communicated with the bottom of the spud legs are arranged in the sealed water tanks, water supplementing nozzles of the water supplementing pipes are positioned at the bottom of the spud legs, and the bottom ends of the high-pressure gas pipes are provided with gas nozzles with upwards openings. When the injection gas lifting structure of the utility model is used for installing the seabed spud leg type structural objects, soil at the lower ends of the spud legs can be liquefied, in addition, gas is supplied into the spud legs through the gas nozzles, and the liquefied soil is brought out through the hollow pipelines arranged on the spud legs, so holes can be formed on the seabed mud surface, structural objects to be installed sink down through the deadweight effect until the structural objects to be installed are stabilized on the seabed, and the goal of installing the structural objects can be reached.
Description
Technical field
The utility model relate to a kind of various calibers under water oil transportation, gas transmission, water supply and sewerage pipeline threeway and platform protective device, relate in particular to a kind of injection gaslift structure that is used to install seabed spud leg formula works.
Background technology
At present, the mounting method of underwater structure has suction type, piling formula and gravity sunk type usually.Wherein, suction type has higher requirement to the watertightness and the tolerance external water pressure ability of spud leg, and the spud leg design is complicated; The piling formula needs professional equipments such as underwater pile driving hammer, the solid stake of hydraulic pressure device, and piling quality is wayward; The gravity sunk type requires bigger to structural strength, it is bigger influenced by ocean current.Though above method is each has something to recommend him.But the subject matter that exists is: operational reliability is poor, equipment require high, cost is high and to wayward or the like the deficiency of installation quality.
The utility model content
In order to overcome the shortcoming of prior art, the utility model provides a kind of injection gaslift structure that is used to install seabed spud leg formula works, utilizes this structure to finish the installation of underwater structure, has the operational reliability height, efficient height, characteristics such as environmental protection.
The utility model is used to install the technical scheme that the injection gaslift structure of seabed spud leg formula works is achieved: comprise bracing frame, support frame as described above is provided with Sonar Probe, the below of support frame as described above is fixed with the spud leg of a plurality of hollow-core constructions, the bottom of described spud leg is provided with sealed cistern, be provided with high-pressure water pipe, filling pipe and high-pressure air pipe in the described spud leg, described high-pressure water pipe is communicated with sealed cistern, be provided with the nozzle of a plurality of perforation spud legs bottom in the described sealed cistern, the moisturizing mouth of described filling pipe is positioned at the bottom of spud leg; The bottom of described high-pressure air pipe is provided with opening valve up.
The utility model is used to install the injection gaslift structure of seabed spud leg formula works, wherein, described sealed cistern be shaped as ellipse.Described high-pressure water pipe is connected with the high pressure water station of peripheral hardware by the water under high pressure manifold.Described filling pipe is connected with the low pressure moisturizing station of peripheral hardware by low pressure moisturizing manifold.Described high-pressure water pipe is connected with the high pressure gas station of peripheral hardware by the high pressure gas manifold.
Compared with prior art, the beneficial effects of the utility model are:
Because high pressure water nozzle, moisturizing mouth with injection gaslift function in the utility model and the valve that is directed upwardly all are arranged in the spud leg, hydraulic spray is connected with the high pressure water station by manifold; Described high pressure valve is connected with the high pressure gas station by manifold; The moisturizing mouth is connected with low pressure moisturizing station by manifold, and the spud leg double as fluid course of hollow-core construction.Therefore, water under high pressure is by the soil under the nozzle cutting spud leg, make it liquefaction, simultaneously, in spud leg, supply gas by valve, under the election effect of air mass, soil after the liquefaction is taken out of by the hollow pipeline in the spud leg, thereby made seabed mud face form the cavity, the works that desire is installed sinks by the effect of deadweight, until being stabilized in the seabed, thereby reach the purpose of mounting structure thing.
Description of drawings
Fig. 1 sprays the total system composition diagram that the gaslift structure constitutes by the utility model;
Fig. 2 is the schematic perspective view that sprays the gaslift structure shown in Fig. 1;
Fig. 3-the 1st, the structural representation of spud leg shown in Fig. 2;
Fig. 3-the 2nd, the mounting process figure of the works of spud leg formula shown in Fig. 3-1.
The specific embodiment
Below in conjunction with accompanying drawing and concrete enforcement the utility model is done to describe in detail.
Main parts size and specification specified in the utility model Figure of description:
1.GPS navigation system, 2. sonar surveillance instrument, 3. attitude monitoring instrument, 4. high pressure water station, 5. high pressure gas station, 6. low pressure moisturizing station, 7. bracing frame, 8. Sonar Probe, 9. sensor, 10. seabed spud leg formula works, 11. spud legs, 12. sealed cisterns, 13. nozzle, 14. moisturizing mouths, 15. valves, 16. high-pressure air pipes, 17. filling pipe, 18. high-pressure water pipe, 19. pits, 20. muddy water, 21 fluid-mixings, 22. grounds, 23. seabed mud faces.
As shown in Figure 2, the utility model is used to install the injection gaslift structure of seabed spud leg formula works, comprise bracing frame, support frame as described above is provided with Sonar Probe 8, the below of support frame as described above is fixed with the spud leg 11 of a plurality of hollow-core constructions, the bottom of described spud leg 11 is provided with sealed cistern 12, described sealed cistern 12 be shaped as ellipse, be provided with high-pressure water pipe 18 in the described spud leg 11, filling pipe 17 and high-pressure air pipe 16, described high-pressure water pipe 18 is communicated with sealed cistern 12, be provided with the nozzle 13 of a plurality of perforation spud legs 11 bottoms in the described sealed cistern 12, the number of described nozzle 13 is at least 7.The moisturizing mouth 14 of described filling pipe 17 is positioned at the bottom of spud leg 11; The bottom of described high-pressure air pipe 16 is provided with opening valve 15 up.As shown in Figure 1 and shown in Fig. 3-2, described high-pressure water pipe 18 is connected with the high pressure water station 4 of peripheral hardware by the water under high pressure manifold, ejects High-Pressure Water with realization nozzle 13 to spud leg 11 bottoms; Described filling pipe 17 is connected with the low pressure moisturizing station 6 of peripheral hardware by low pressure moisturizing manifold, to realize moisturizing in spud leg; Described high-pressure air pipe 16 is connected with the high pressure gas station 5 of peripheral hardware by the high pressure gas manifold, to realize that valve 15 is up to the hollow high pressure draught that ejects of spud leg.
The utility model sprays gaslift respective outer side edges external equipment can better realize accurate location, raise the efficiency, the external equipment that common and the utility model sprays the use of gaslift setted structure comprises: DGPS system 1, sonar surveillance instrument 2, attitude monitoring instrument 3, high pressure water station 4, high pressure gas station 5 and low pressure moisturizing station 6.Wherein, attitude monitoring instrument 3 comprises: sensor, main frame, holding wire and cable.As shown in Figure 2, sensor 9 is installed on the seabed spud leg formula works 10, and as shown in Figure 1, main frame is installed on the job platform of workboat, understands the state of spud leg formula works 10 by the demonstration of main frame, adjusts in real time.Sonar surveillance instrument 2 comprises Sonar Probe 8, main frame, holding wire and cable.Sonar Probe 8 is installed on the middle part of the bracing frame of seabed spud leg formula works 10, and main frame is installed on the workboat job platform, when seafloor structure is in place, by the position of front and back sonar display pipeline, adjusts works 10.
The process that utilization is installed seabed spud leg formula works by utility model is: at first, as shown in Figure 1, by DGPS system 1 location, after finish seafloor structure 10 location, start the drive unit that sprays the gaslift arrangement works, comprise: high pressure water station 4, high pressure gas station 5 and low pressure moisturizing station 6, shown in Fig. 3-2, water under high pressure is by being installed in the hydraulic spray 13 that spud leg 11 interior high-pressure water pipe 18 are transported to water under high pressure the spud leg bottom, from nozzle 13 ejection High-Pressure Waters, cutting liquefaction is near the earth of the lower end of spud leg 11, and the ground 22 of spud leg lower end is under the high-speed water jets effect, form pit 19, eliminate the soil bearing capacity of the lower end of spud leg 11; Form the muddy water of fluidised form/liquid state near the lower end of spud leg 11; Meanwhile, spray the gaslift structure by be installed in high-pressure air pipe 16 in the spud leg with the compressed air delivery of big flow near near the valve 15 the mouth of pipe of spud leg bottom, by valve 15 to the inner water surface (up) the direction discharges compressed air of spud leg, compressed air fills part with the muddy water 20 that sprays the liquid state that forms near the mouth of pipe of spud leg lower end mixes, form the lighter gas-liquid mixture fluid 21 of proportion, flow along the direction to upper end open in the spud leg.The earth or the suspended particulate of liquefaction are carried out beyond the spud leg 11.
The operating principle that the utility model sprays the gaslift structure is: for native frictional resistance in the spud leg pipe and spud leg pipe lower end soil pressure-bearing resistance vital consumption is arranged.Spraying under the gas lift, spud leg pipe lower end and inner earth run off rapidly, make that the support force that supports spud leg formula works is subdued greatly, and like this, works could be settled down to design elevation under enough deadweight effects.Along with spraying the gaslift structure the inner gas-liquid mixture fluid of spud leg pipe is given rise to outside the spud leg pipe, spud leg pipe internal pressure reduces, the muddy water 20 of spud leg pipe outside just flows in the spud leg pipe lower ending opening under differential pressure action, mix and mix at the inner silt that forms with injection of spud leg more afterwards with compressed air, gone out outside the spud leg pipe by lifting again after forming the lighter or even gas-liquid mixture fluid 21 " foamed " of proportion, so just formed a liquid circulation.
Outer native frictional resistance has important consumption to the spud leg pipe under certain condition or at certain phase to spray the gaslift structure, the validity of this effect the keeping that liquid circulates that place one's entire reliance upon.Though under the intact situation of the hard viscosity layer spud leg periphery stratum borehole wall or be in the sand soil layer but thinner thickness or spud leg embedded depth when more shallow, the liquid circulation can be kept good, this moment, the spud leg periphery mount that is liquefied enclosed, thereby the outer native frictional resistance of spud leg pipe can reduce greatly.This kind phenomenon shows: the liquid circulation is kept well and is subdued the outer native frictional resistance decisive role of spud leg pipe effectively for spraying the gaslift system.
Although in conjunction with figure the utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong within the protection of the present utility model.
Claims (6)
1. injection gaslift structure that is used to install seabed spud leg formula works, comprise bracing frame, support frame as described above is provided with Sonar Probe (8), the below of support frame as described above is fixed with the spud leg (11) of a plurality of hollow-core constructions, the bottom of described spud leg (11) is provided with sealed cistern (12), be provided with high-pressure water pipe (18) in the described spud leg (11), filling pipe (17) and high-pressure air pipe (16), described high-pressure water pipe (18) is communicated with sealed cistern (12), be provided with the nozzle (13) of a plurality of perforation spud legs (11) bottom in the described sealed cistern (12), the moisturizing mouth (14) of described filling pipe (17) is positioned at the bottom of spud leg (11); The bottom of described high-pressure air pipe (16) is provided with opening valve (15) up.
2. according to the described injection gaslift structure that is used to install seabed spud leg formula works of claim 1, it is characterized in that: described sealed cistern (12) be shaped as ellipse.
3. according to the described injection gaslift structure that is used to install seabed spud leg formula works of claim 1, it is characterized in that: the number of described nozzle (13) is at least 7.
4. according to the described injection gaslift structure that is used to install seabed spud leg formula works of claim 1, it is characterized in that: described high-pressure water pipe (18) is connected with the high pressure water station (4) of peripheral hardware by the water under high pressure manifold.
5. according to the described injection gaslift structure that is used to install seabed spud leg formula works of claim 1, it is characterized in that: described filling pipe (17) is connected with the low pressure moisturizing station (6) of peripheral hardware by low pressure moisturizing manifold.
6. according to the described injection gaslift structure that is used to install seabed spud leg formula works of claim 1, it is characterized in that: described high-pressure air pipe (16) is connected with the high pressure gas station (5) of peripheral hardware by the high pressure gas manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201040681U CN201660896U (en) | 2010-01-29 | 2010-01-29 | Injection gas lifting structure for installing seabed spud leg type structural objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201040681U CN201660896U (en) | 2010-01-29 | 2010-01-29 | Injection gas lifting structure for installing seabed spud leg type structural objects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660896U true CN201660896U (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201040681U Expired - Lifetime CN201660896U (en) | 2010-01-29 | 2010-01-29 | Injection gas lifting structure for installing seabed spud leg type structural objects |
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| Country | Link |
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| CN (1) | CN201660896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696423A (en) * | 2013-12-30 | 2014-04-02 | 中国海洋石油总公司 | Bush-type pile shoe jetting system for self-elevating drilling platform |
| CN108842777A (en) * | 2018-08-23 | 2018-11-20 | 天津海外海科技有限公司 | One kind is for mud discharger and discharge method in platform leg |
-
2010
- 2010-01-29 CN CN2010201040681U patent/CN201660896U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696423A (en) * | 2013-12-30 | 2014-04-02 | 中国海洋石油总公司 | Bush-type pile shoe jetting system for self-elevating drilling platform |
| CN103696423B (en) * | 2013-12-30 | 2016-01-27 | 中国海洋石油总公司 | Stake system is rushed in the shoe of a kind of self-elevating drilling platform grove formula |
| CN108842777A (en) * | 2018-08-23 | 2018-11-20 | 天津海外海科技有限公司 | One kind is for mud discharger and discharge method in platform leg |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |