CN218540638U - Be used for offshore installation of well head platform to use limit structure - Google Patents

Abstract

The utility model discloses a be used for offshore installation of wellhead platform to use limit structure relates to ocean engineering technical field. Including lengthening the body, it has the horn mouth to connect long body bottom fixedly connected with, fixed surface is connected with fixed knot all around to the horn mouth constructs, fixed knot constructs including two support diaphragms, two support diaphragm one side and horn mouth fixed surface all around are connected, fixedly connected with supports between two support diaphragms and erects the version. The utility model discloses a setting of limit structure body for chunk well head platform can be accomplished at land prefabrication, avoids colliding with the production tree head during marine integral erection, and marine hoist and mount of reducible chunk well head platform and welding work load, structural design is simple, and the prefabrication is with low costs, is applicable to all installations that float and drags chunk well head platform, provides important technical support for similar project, has the meaning of using for reference.

Description

Be used for offshore installation of well head platform to use limit structure

Technical Field

The utility model relates to an ocean engineering technology field specifically is a be used for offshore installation of well head platform to use limit structure.

Background

For offshore oil exploitation, a fixed ocean platform is used, and a large-tonnage ocean platform (more than ten thousand tons) is generally installed on the sea by using a floating and dragging method.

Because the chunk wellhead platform is located the limited region of floating when dragging the installation (the region of forbidding having the barrier when dragging the floating), and partial production tree head has been installed on the water-proof casing, production tree head and the unsatisfied chunk floating requirement of chunk wellhead platform clearance undersize, therefore the chunk wellhead platform is usually in bulk at the marine after the chunk floats, the offshore environment that needs to deal with in bulk of wellhead platform is abominable, lifting device is simple crude, unfavorable factors such as the welding degree of difficulty is big, relative land work load increases several times work load, for reducing offshore wellhead platform work load in bulk, practice thrift the project cost, so the utility model provides a new solution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for marine mounting of well head platform to use limit structure to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a limit structure for wellhead platform marine installation, is including extending the body, it has the horn mouth to extend body bottom fixedly connected with, fixed surface is connected with fixed knot all around to the horn mouth, fixed knot constructs including two support diaphragms, two support diaphragm one side and horn mouth fixed surface all around are connected, fixedly connected with supports between two support diaphragms erects the version.

Preferably, four fixing structures are fixedly connected to the peripheral surface of the horn mouth, and the cross section of each fixing structure is I-shaped.

Preferably, one side of each of the four fixing structures is fixedly connected with a block wellhead platform, a plurality of square blocks are arranged inside the block wellhead platform, and the surface of the periphery of the bottom of the extension pipe body is sleeved with a waterproof casing.

Preferably, the inside mounting of chunk has limit structure body, limit structure body is including extending body, horn mouth and fixed knot structure the limit structure body is installed inside the chunk, two sets of limit structure bodies need to be installed to the inside of chunk, and its position is located two riser diagonal positions.

Preferably, the bottom of the chunk wellhead platform is fixedly connected with a jacket wellhead platform, and the top of the waterproof casing is fixedly connected with a Christmas tree head.

Compared with the prior art, the beneficial effects of the utility model are that:

this be used for marine limit structure for installation of wellhead platform, through the setting of limit structure body for the chunk wellhead platform can be accomplished at land prefabrication, avoids colliding with the production tree head during marine integral erection, and reducible chunk wellhead platform is marine hoist and mount and welding work load, and structural design is simple, and prefabricated with low costs is applicable to all and floats the installation of dragging chunk wellhead platform, provides important technical support for similar project, has the meaning of borrowing for reference.

This be used for marine limit structure for installation of wellhead platform, through the setting of water-stop jacket pipe, to the same water-stop jacket pipe repeatedly usable of pipe diameter for chunk wellhead platform can accomplish in land prefabrication, and marine installation reduces marine hoist and mount and weldment work volume, improves chunk wellhead platform installation effectiveness, practices thrift project cost.

Drawings

Fig. 1 is a front perspective view of the limiting structure body of the present invention;

fig. 2 is a top view of the limiting structure body of the present invention;

fig. 3 is a front view of the limiting structure body of the present invention;

fig. 4 is a top view of the present invention;

fig. 5 is a cross-sectional view of the present invention a;

in the figure: 1. lengthening the pipe body; 2. a fixed structure; 3. a bell mouth; 4. a chunk wellhead platform; 5. a limiting structure body; 6. a riser pipe; 7. a Christmas tree head; 8. jacket wellhead platform.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

Because the chunk wellhead platform is located the limited region of floating when dragging the installation (the region of forbidding having the barrier when dragging the floating), and partial production tree head has been installed on the water-proof casing, production tree head and chunk wellhead platform clearance undersize can not satisfy the chunk floating requirement, therefore the chunk wellhead platform is usually in bulk at the sea after the chunk floats, the offshore environment that needs to deal with in bulk of wellhead platform is abominable, lifting device is simple and crude, unfavorable factors such as the welding degree of difficulty is big, relative land work load increases several times work load, for reducing offshore wellhead platform work load in bulk, practice thrift the project cost, to foretell problem, the utility model discloses take following implementation.

As shown in fig. 1-5, the utility model provides a technical solution: the utility model provides a be used for marine mounting of well head platform to use limit structure, is including extending body 1, and 1 bottom fixedly connected with horn mouth 3 of extension body, the fixed surface is connected with fixed knot structure 2 around horn mouth 3, and fixed knot constructs 2 including two support diaphragms, and two support diaphragm one side and horn mouth 3 fixed surface are connected all around, and fixedly connected with supports between two support diaphragms erects the version. Four fixed structures 2 are fixedly connected to the peripheral surface of the bell mouth 3, and the cross section of each fixed structure 2 is I-shaped. Four 2 one sides fixedly connected with chunk well head platforms 4 of fixed knot construct, the inside a plurality of square chunks that are provided with of chunk well head platform 4, the surface cover all around of extension body 1 bottom has water-proof sleeve 6.

Through the setting of water-stop casing 6, to 6 repeatedly usable of water-stop casing that the pipe diameter is the same for chunk wellhead platform 4 can be accomplished at land prefabrication, and marine installation reduces marine hoist and mount and welding work load, improves chunk wellhead platform 4 installation effectiveness, practices thrift the project cost.

What need to explain, chunk internally mounted has limit structure body 5, limit structure body 5 is installed inside the chunk including lengthening body 1, horn mouth 3 and 2 limit structure bodies 5 of fixed knot structure, two sets of limit structure bodies 5 need to be installed inside the chunk, its position is located two water-proof casing 6 diagonal departments, setting through limit structure body 5, make chunk well head platform 4 can be prefabricated on land and accomplish, avoid colliding with production tree head 7 during marine integral erection, reducible chunk well head platform 4 marine hoist and mount and welding work load, structural design is simple, prefabrication is with low costs, be applicable to all installations that float and drag well head platform 4, provide important technical support for similar project, have reference meaning.

It should be further explained that the bottom of the chunk wellhead platform 4 is fixedly connected with a jacket wellhead platform 8, and the top of the water-resisting casing 6 is fixedly connected with a Christmas tree head 7.

The working principle is as follows: the limiting structure bodies 5 are welded at two positions of the block wellhead platform 4, and the two positions correspond to the positions of the offshore riser 6 without installing the Christmas tree heads 7 and are distributed diagonally. Before the chunk wellhead platform 4 floats and drags, the lengthened pipe body 1 is welded with two water-resisting sleeves 6 at opposite angles of the non-installed Christmas tree head 7 (the position of the lengthened pipe body is consistent with the welding position of the limiting structure body 5), the chunk wellhead platform 4 penetrates through the lengthened pipe body 1 during offshore installation and finally falls on the jacket wellhead platform 8, then the lengthened pipe body 1 is cut off, after the chunk floats and drags, the chunk wellhead platform 4 is lifted to a design position and welded by using a chain block, and finally the limiting structure body 5 is cut off. Offshore installation is accomplished by the chunk wellhead platform 4.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a be used for offshore installation of wellhead platform to use limit structure, includes extension body (1), its characterized in that: connect body (1) bottom fixedly connected with horn mouth (3) of growing, fixed surface is connected with fixed knot all around and constructs (2) horn mouth (3), fixed knot constructs (2) including two support diaphragms, two support diaphragm one side and horn mouth (3) fixed surface all around are connected, fixedly connected with supports between two support diaphragms and erects the version.

2. The limit structure for offshore installation of the wellhead platform as claimed in claim 1, wherein: four fixed knot construct (2) are connected with to horn mouth (3) surface fixed all around, fixed knot construct (2) transversal personally submit "worker" style of calligraphy.

3. The limit structure for offshore installation of the wellhead platform as claimed in claim 2, wherein: the water-proof and water-proof type water-proof and oil-proof well head structure is characterized in that one side of each of the four fixing structures (2) is fixedly connected with a block well head platform (4), a plurality of square blocks are arranged inside the block well head platform (4), and water-proof sleeves (6) are sleeved on the surfaces of the periphery of the bottom of the extension pipe body (1).

4. The limit structure for offshore installation of the wellhead platform as claimed in claim 3, wherein: the water-stop block is characterized in that a limiting structure body (5) is arranged inside the block, the limiting structure body (5) comprises a lengthening pipe body (1), a bell mouth (3) and a fixing structure (2), the limiting structure body (5) is arranged inside the block, two sets of limiting structure bodies (5) need to be arranged inside the block, and the positions of the limiting structure bodies are located at the diagonal positions of two water-stop sleeves (6).

5. The limit structure for offshore installation of the wellhead platform as claimed in claim 3, wherein: the bottom of the chunk wellhead platform (4) is fixedly connected with a jacket wellhead platform (8), and the top of the waterproof casing pipe (6) is fixedly connected with a Christmas tree head (7).

Images