CN204199262U - Simple and easy cylinder stake formula wellhead platform - Google Patents

Abstract

The utility model relates to a simple barrel-pile wellhead platform, which includes an upper platform, pile legs, barrel piles, sinking pads, and pile foundations. By adopting a box-type upper platform, the difficulty of construction is reduced, and it can be built on the berth. Launching and self-floating towage transportation; by using barrel piles, the water-resistor casing protection pipe and pile legs are integrated, and can be used as a wellhead oil production platform after being connected with the platform, sinking pad, and pile foundation; The combination of suction piles and sinking pads meets the requirements of the platform being used in different water depths, and is reusable with high economic benefits.

Description

Simple pile type wellhead platform

technical field

The utility model relates to a wellhead platform, in particular to a wellhead platform with barrel piles, suction piles and sinking cushion structures.

Background technique

With the development of offshore oil resources, the wellhead platform has been widely used. Conventional jacket-type wellhead platforms are generally designed according to the environmental conditions of a certain target sea area, the applicable water depth is relatively fixed, and it is difficult to relocate and reuse. The traditional wellhead platform adopts the upper platform of the beam-column space frame structure, and the lower part adopts the jacket structure and the steel pile foundation to carry the environmental load. The barge is hoisted by the floating crane and transported to the installation sea area by a large barge. The offshore installation of the jacket and the upper platform requires the use of a large floating crane, the driving of the steel piles requires the use of a piling hammer, and it needs to be connected with the jacket grouting, and the cost of offshore installation is high. The jacket needs to be equipped with a multi-layer horizontal guide structure for the water-resistant casing. The structure is complex, the connection stiffness is weak, and the strength of the water-resistant casing is high. For the development of offshore oil and gas fields, especially marginal oil and gas fields, the traditional jacket-type wellhead platform scheme is adopted, the total development cost is high, the return on investment is low, and even the oil and gas fields have no development value.

This patent application proposes a simple and simple barrel-pile wellhead platform under this background.

Utility model content

The main purpose of the utility model is to overcome the above-mentioned shortcomings existing in the prior art, and provide a simple pile-type wellhead platform platform and its construction method. By adopting the closed box upper platform, the difficulty of construction is reduced, and it can be constructed on the berth. The air bag is launched into the water and transported by self-floating towage; by using the barrel pile, the water-resisting casing protection tube and the pile leg are integrated, and can be used as a wellhead oil production platform after being connected with the platform, sinking pad and suction pile; The combination of suction piles and sinking pads meets the requirements of the platform being used in different water depths, and is reusable with high economic benefits.

The purpose of this utility model is achieved by the following technical solutions:

The simple cylindrical pile wellhead platform includes an upper platform, pile legs, cylindrical piles, sinking pads, and suction piles, and is characterized in that the upper platform is a box-shaped closed structure, and the upper platform is provided with the pile legs and the Tube pile, the tube pile has the functions of waterproof casing protection pipe and pile leg, and can be used as a wellhead oil production platform after being connected with the upper platform, the sinking pad, and the suction pile; the upper The platform is mechanically connected to the leg and the barrel pile respectively, the bottom of the leg and the barrel pile are respectively connected to the sinking pad by welding, and the sinking pad is paired with the suction pile and connected mechanically; when the upper platform is used in shallow water, the bottom of the sinking pad is sunk below the mud surface as a foundation, and the suction pile acts as an anti-slip function; when the upper platform is used in deep water, the The sinking pad is suspended in the water, and the suction piles play a supporting role.

Beneficial effects of the utility model: the utility model adopts the above-mentioned technical scheme, and reduces the construction difficulty by adopting the box-type upper platform, which can be built on the berth, launched with an air bag, and transported by self-floating towage; The water-resisting casing protective pipe is integrated with the pile legs, and can be used as a wellhead oil production platform after being connected with the platform, sinking pad and pile foundation; Water depth requirements, reusable, high economic benefits.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Description of drawings:

Fig. 1 is a schematic diagram of the elevation of the utility model;

Fig. 2 is a schematic plan view of the utility model;

Fig. 3 is a schematic diagram of launching the utility model;

Fig. 4 is the utility model towage schematic diagram;

Fig. 5 is the installation diagram of suction pile foundation;

Fig. 6 is a schematic diagram of positioning of the utility model;

Figure 7 is a schematic diagram of the lowering of the suction pile foundation;

Figure 8 is a schematic diagram of the installation of the suction pile foundation;

Fig. 9 is a schematic diagram of jacking in place of the utility model.

Explanation of main symbols in the figure:

1—upper platform; 2—legs; 3—tube pile; 4—sinking pad; 5—suction pile; 6—lifting system; 7—airbag.

Detailed ways

Below in conjunction with accompanying drawing and example, the utility model is described in detail.

As shown in Figures 1 and 2, the utility model includes an upper platform 1, pile legs 2, barrel piles 3, sinking pads 4, and suction piles 5. The upper platform 1 is a box-shaped closed structure, and the upper platform 1 is provided with several pile legs 2. And the barrel pile 3, the upper platform 1 is mechanically connected with the leg 2 and the barrel pile 3 respectively, the bottom of the leg 2 and the barrel pile 3 are respectively connected with the sinking pad 4 by welding, and the sinking pad 4 is paired with the suction pile 5 And through mechanical connection, the sinking of the pile leg 2 and the tube pile 3 and the raising of the upper platform 1 are all completed by the lifting system 6 .

When the upper platform 1 is used in shallow water, the bottom of the sinking pad 4 sinks below the mud surface as a foundation, and the suction pile 5 acts as an anti-slip function; when the upper platform 1 is used in deep water, the sinking pad 4 is suspended in the water, and the suction pile 5 acts as a support effect.

As shown in Figure 3-9, the construction method of the simple pile-type wellhead platform includes the following steps:

(1) After the upper platform 1, pile leg 2, barrel pile 3 and sinking pad 4 are built on the berth, they are launched with airbags and towed by a tugboat to the anchorage, and the suction pile 5 and sinking pad 4 are paired together by a floating crane Mechanical connection, tow the upper platform 1, sinking pad 4 and suction pile 5 to the installation sea area as a whole, and perform water surface positioning;

(2) The upper platform 1 lowers the pile leg 2 and the tubular pile 3 through the lifting system 6, and the suction pile 5 enters the mud by its own weight. penetrating into seabed soil under pressure;

(3) Adjust the overall levelness of the upper platform 1, sinking pad 4 and suction pile 5 by controlling the lifting system 6;

(4) After the suction pile 5 is installed in place, the upper platform 1 is raised to the design height through the lifting system 6, and the pile legs 2 and the upper platform 1 are mechanically connected and fixed.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (1)

1. Simple barrel-pile wellhead platform, comprising an upper platform, pile legs, barrel piles, sinking cushions, and suction piles, characterized in that the upper platform is a box-shaped closed structure, and the upper platform is provided with the pile legs and The tubular pile, the tubular pile has the functions of water-resisting casing protection pipe and pile leg, and can be used as a wellhead oil production platform after being connected with the upper platform, the sinking pad, and the suction pile; The upper platform is mechanically connected to the leg and the barrel pile respectively, the bottom of the leg and the barrel pile are respectively connected to the sinking pad by welding, and the sinking pad is connected to the suction pile Grouped and connected by mechanical means; when the upper platform is used in shallow water, the bottom of the sinking pad sinks below the mud surface as a foundation, and the suction pile acts as an anti-slip function; when the upper platform is used in deep water, The sinking pad is suspended in the water, and the suction pile plays a supporting role.