CN202139590U - Auxiliary pile washout device of self-elevating platform - Google Patents

Abstract

The utility model provides an auxiliary pile washout device of a self-elevating platform, which comprises a floating body and an injection pipeline, wherein the floating body is connected with the platform, a pipeline communicating with a corresponding pile shoe is arranged in the floating body; one end of the injection pipeline is connected with a high-pressure water source and the other end of the injection pipeline is connected with the pipeline. The auxiliary pile washout device of the self-elevating platform uses the floating body to reduce a backfilling capacity of the pile pit soil body after the floating body occupies the space, so that a pile extracting resistance of the platform is reduced. The auxiliary pile washout device of the self-elevating platform uses the pipeline to wash out the soil, and can liquefy the soil body, so that the compaction of the soil body around the pile pit is reduced and even avoided, thus the purpose of reducing the pile extracting resistance is achieved.

Description

A self-elevating platform auxiliary pile flushing device

technical field

The utility model relates to an auxiliary pile punching device for a self-elevating platform.

Background technique

The jack-up drilling platform is an important equipment for offshore oilfield development. At present, my country mainly uses jack-up platforms for offshore oil and gas drilling operations. An important task before the operation of the jack-up platform is to insert piles and ballast, that is, to use the weight of the platform and the weight of the ballast water to insert the platform legs and spud cans to a certain depth to resist the platform's operating load and environmental load . However, in many sea areas, due to the poor bearing capacity of the seabed soil, the spud cans may penetrate to a greater depth below the mud line, such as more than 30 meters. If the operation period of the platform is long, the collapsed soil of the platform pile pit and the silted soil will form compaction above the pile can, increasing the pile pulling resistance, and even the platform equipment will be damaged during the pile pulling process.

Utility model content

The technical problem to be solved by the utility model is to provide an auxiliary pile punching device that can overcome the compaction of the soil above the pile shoe and effectively increase the depth of pile insertion at the allowable limit of the platform.

In order to solve the above problems, the utility model provides a self-elevating platform auxiliary pile flushing device, including:

A floating body, the floating body is connected to the platform, and a pipeline communicating with the corresponding spud can is arranged in the floating body;

An injection pipeline, one end of the injection pipeline is connected to a high-pressure water source, and the other end is connected to the pipeline.

Further, the floating body includes an upper floating body, a middle floating body and a lower floating body.

Further, the pipelines among the upper floating body, the middle floating body and the lower floating body are connected by alignment joints.

Further, the upper floating body and the middle floating body are fixedly connected to the platform legs through lifting lugs; the bottom of the lower floating body is welded to the platform spud cans.

Further, an air bag for inflating is arranged in the buoyant body.

Further, an annular plate for strengthening strength is arranged in the buoyant body.

The utility model has the following advantages:

1. The utility model is equipped with a floating body, which can reduce the backfilling amount of the soil in the pile pit after the floating body occupies the space, thereby reducing the pile pullout resistance of the platform; Hardening or even avoid hardening, to achieve the purpose of reducing the resistance of pile pulling.

2. The utility model is simple in structure, strong in operability, easy to implement, low in production cost, high in use reliability, and easy to popularize and use.

Description of drawings

Below in conjunction with accompanying drawing, the embodiment of the present utility model is further described:

Fig. 1 shows a structural schematic diagram of a self-elevating platform auxiliary pile punching device of the present invention.

Detailed ways

As shown in FIG. 1 , the utility model includes a floating body 1 and an injection pipeline 2 . The floating body 1 is used to block the silt and connect to the water source; the injection pipeline 2 is used to inject high-pressure water into the pipeline 11 of the floating body 1, so as to realize the flushing of the silt on the spud cans 31 of the platform 3 .

Can be immersed in seawater in the floating body 1, but can not be immersed in silt, can equal weight with seawater after immersing in seawater. Inflation can also be carried out in the floating body 1, so that the auxiliary pile extraction of the platform 3 is carried out. The floating body 1 is connected to the platform 3 and occupies the inner space of the platform 3 so as to block silt. A pipeline 11 connected to the corresponding spud can 31 is arranged in the buoyant body 1. The pipeline 11 can guide the high-pressure water injected into the pipeline 2 to the spud can 31, thereby washing the spud can 31 and avoiding silt formation and accumulation on the spud can. 31 on.

One end of the injection pipeline 2 is connected to a high-pressure water source, and the other end is connected to a pipeline 11 . The injection pipeline 2 can inject high-pressure water into the pipeline 11 of the floating body 1 , and flush the spud can 31 through the pipeline 11 .

The utility model adopts the floating body 1, and the space occupied by the floating body 1 can reduce the backfilling amount of the pile pit soil, thereby reducing the pile pulling resistance of the platform 3; Soil compaction or even avoid compaction, to achieve the purpose of reducing pile pulling resistance.

In the present invention, the floating body 1 includes an upper floating body 12 , a middle floating body 13 and a lower floating body 14 . Since the platform 3 is relatively large, if an integrated floating body is used, it will be bulky, difficult to manufacture, and the production cost is very high. If it is made in separate parts, it is easy to achieve standardization, and the number of floating bodies 1 can be increased according to objective needs.

In the present utility model, the pipelines 11 among the upper floating body 12 , the middle floating body 13 and the lower floating body 14 are connected through alignment joints 15 . Through the alignment joint 15, the communication of the pipeline 11 can be realized. Generally, pipe threads can be used for connection to facilitate connection and sealing.

In the utility model, the upper floating body 12 and the middle floating body 13 are fixedly connected to the legs 32 of the platform 3 through the lugs 16; the bottom of the lower floating body 14 is welded to the spud shoes 31 of the platform 3 . The lugs 16 can be conveniently connected to the pile legs 32, and facilitate the installation and disassembly of the buoyant body 1 on the platform 3.

In the present utility model, an air bag 17 for inflating is arranged in the floating body 1 . This airbag 17 needn't be inflated when pile is lowered, can be filled with gas in airbag 17 when needing pile pulling, so that reduce platform overall weight, realize auxiliary pile pulling.

In the utility model, an annular plate 18 for strengthening strength is arranged inside the floating body 1 . The use of the annular plate 18 can strengthen the strength of the floating body 1 and prevent the floating body 1 from being damaged under the impact of seawater.

The utility model has the advantages of simple structure, strong operability, easy realization, low manufacturing cost, high use reliability and convenient popularization and use.

In summary, the above are only preferred embodiments of the present utility model, and are not used to limit the scope of protection of the present utility model. Therefore, any modifications, equivalent replacements, Improvements and the like should all be included within the protection scope of the present utility model.

Claims (6)

1. the auxiliary pile punching apparatus of jack-up unit is characterized in that, comprising:

Buoyancy aid, said buoyancy aid connects platform, and the pipeline that is communicated with corresponding shoe is set in the said buoyancy aid;

Inject pipeline, said injection pipeline one end connects high-pressure water, and the other end connects said pipeline.

2. jack-up unit as claimed in claim 1 is assisted pile punching apparatus, it is characterized in that: said buoyancy aid comprises that upper float, middle buoyancy aid reach buoyancy aid down.

3. jack-up unit as claimed in claim 2 is assisted pile punching apparatus, it is characterized in that: pipeline connects through the contraposition joint between said upper float, middle buoyancy aid and the following buoyancy aid.

4. jack-up unit as claimed in claim 2 is assisted pile punching apparatus, it is characterized in that: said upper float is fixedly connected platform leg with middle buoyancy aid through hanger; Weld between said bottom of buoyancy aid down and the platform pile shoe.

5. like the auxiliary pile punching apparatus of the arbitrary described jack-up unit of claim 1-4, it is characterized in that: be provided with in the said buoyancy aid and be used for inflatable air bag.

6. jack-up unit as claimed in claim 5 is assisted pile punching apparatus, it is characterized in that: be provided with the annular slab that is used to strengthen intensity in the said buoyancy aid.