CN215801765U - Combined foundation for underwater production equipment - Google Patents

Abstract

The utility model discloses a combined foundation for underwater production equipment, which comprises an anti-sinking plate foundation main body, a pile and a pile sleeve, wherein the anti-sinking plate foundation main body is used for bearing the underwater production equipment; the anti-sinking plate foundation provides main vertical and horizontal bearing capacity, and the pile foundation provides residual bearing capacity and stability, so that the size of the anti-sinking plate foundation can be effectively controlled, and the requirement on installation resources is reduced; meanwhile, the length of the pile foundation can be effectively reduced; when geological conditions are complex and the seabed soil coverage layer is thick, the method has better adaptability, and solves the problem that the size of the anti-sinking plate is too large due to poor soil conditions and insufficient foundation bearing capacity; the construction difficulty, the construction time and the use of construction resources are reduced, the material cost and the installation cost of underwater production equipment are greatly reduced, and the method has good engineering application value.

Description

Combined foundation for underwater production equipment

Technical Field

The utility model relates to an underwater equipment foundation in the field of offshore oil engineering, in particular to a combined foundation for underwater production equipment.

Background

With the development of the marine oil industry, underwater production systems have gained wide attention in oil and gas development at home and abroad. Production equipment in the underwater production system is required to be installed on a stable underwater structure foundation so as to ensure that the underwater equipment cannot sink due to insufficient vertical bearing capacity, and cannot be toppled, slipped and the like due to factors such as ocean currents, fishing net towing, earthquakes and the like, so that the equipment cannot be safely produced.

The underwater structure foundation in the prior art is mostly a single anti-sinking plate foundation, can not adapt to the environment that geological conditions are complicated, seabed soil texture overburden is thick, use single anti-sinking plate foundation, make it satisfy underwater production equipment's installation demand in order to improve its bearing capacity usually, need increase the size of anti-sinking plate foundation, can increase material cost and installation cost, the increase of the degree of difficulty of being under construction simultaneously, also can occupy a large amount of construction resources during the construction, and the installation effectiveness is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a combined foundation for underwater production equipment, which has better vertical bearing capacity, ensures that the underwater production equipment can be stably installed on the foundation under the conditions of complex geological conditions and thicker seabed soil covering layer and saves cost.

In order to solve the technical problem, the utility model provides a combined foundation for underwater production equipment, which comprises a bottom plate, a main frame, piles and pile sleeves, wherein the bottom plate is fixedly arranged on the lower surface of the main frame to construct an anti-sinking plate foundation main body, the piles penetrate through the anti-sinking plate foundation main body and are fixed with the anti-sinking plate foundation main body through the pile sleeves, and the pile sleeves are fixedly arranged on the upper surface of the main frame, are sleeved outside the piles and are fixed with the piles.

Further, the pile cover is a cylinder allowing the pile to pass through, and the pile cover is perpendicular to the main frame.

Further, the pile has a plurality of, pile cover with the stake one-to-one.

Furthermore, the main frame is a planar rectangular frame formed by mutually perpendicular and welded H-shaped steels in the same plane.

Furthermore, the number of the piles is four, and the four pile sleeves are arranged close to four corners of the main frame.

Further, the top of the pile sleeve is provided with a connecting device for fixedly connecting the pile.

Furthermore, a plurality of drain holes are uniformly formed in the bottom plate.

Further, the pile sleeve structure further comprises a ring plate, and the ring plate is sleeved outside the pile sleeve.

Further, the pile sleeve also comprises a lifting lug which is vertically welded and fixed on the outer surface of the pile sleeve.

Further, the pile cover and the main frame are welded and fixed.

The utility model has the technical effects that: the utility model discloses a combined foundation for underwater production equipment, which comprises an anti-sinking plate foundation main body, a pile and a pile sleeve, wherein the anti-sinking plate foundation main body is used for bearing the underwater production equipment; the utility model combines the design advantages and economic advantages of the anti-sinking plate foundation and the pile foundation, develops a combined foundation for underwater production equipment, which combines the anti-sinking plate foundation and the pile, and comprises the following steps: the anti-settling plate foundation provides main vertical and horizontal bearing capacity, the pile provides residual bearing capacity and ensures the stability of the whole body, the size of the anti-settling plate foundation can be effectively controlled, and the requirement on installation resources is reduced; meanwhile, the length of the pile foundation can be effectively reduced; when geological conditions are complex and the seabed soil coverage layer is thick, the method has better adaptability, and solves the problem that the size of the anti-sinking plate is too large due to poor soil conditions and insufficient foundation bearing capacity; the construction difficulty, the construction time and the use of construction resources are reduced, the material cost and the installation cost of underwater production equipment are greatly reduced, and the method has good engineering application value.

Drawings

FIG. 1 is a schematic view of a modular infrastructure for a subsea production facility in accordance with the present invention;

fig. 2 is a schematic structural view of the anti-sinking plate foundation main body and the pile sleeve of the utility model.

The main reference numbers in the figures illustrate:

1-combined foundation, 2-connecting device, 3-drain hole, 4-ring plate, 5-lifting lug, 6-underwater production equipment placing area, 7-reinforced vertical plate, 11-bottom plate, 12-main frame, 13-pile and 14-pile sleeve.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

Fig. 1 is a schematic structural view of a combined foundation for an underwater production apparatus of the present invention, fig. 2 is a schematic structural view of a main body and a pile cover of an anti-settling plate foundation of the present invention, and as shown in fig. 1 and 2, a combined foundation 1 for an underwater production apparatus includes a bottom plate 11, a main frame 12, piles 13 and a pile cover 14, the bottom plate 11 is fixedly disposed on a lower surface of the main frame 12 to construct the main body of the anti-settling plate foundation, the piles 13 are disposed through the main body of the anti-settling plate foundation and fixed to the main body of the anti-settling plate foundation by the pile cover 14, and the pile cover 14 is fixedly disposed on an upper surface of the main frame 12 and sleeved outside the piles 13 and fixed to the piles 13.

In one embodiment of the present invention, as shown in fig. 1, a bottom plate 11 is welded and fixed on a lower surface of a main frame 12 to form a foundation body of a sinking prevention plate for bearing underwater production equipment (not shown in the drawings), wherein the bottom plate 11 is in contact with a mud surface of a seabed, a plurality of pile sleeves 14 are fixed on an upper surface of the main frame 12, piles 13 penetrate through the foundation body of the sinking prevention plate by the pile sleeves 14 and are inserted below the mud surface of the seabed, and after the piles 13 are installed, the pile sleeves 14 are fixed with the piles 13; the utility model combines the design advantages and economic advantages of the anti-sinking plate foundation and the pile foundation: the anti-sinking plate foundation provides the main vertical and horizontal bearing capacity, and simultaneously the pile foundation is utilized to assist the bearing capacity and stably support the whole combined foundation 1 on the seabed.

Compared with the traditional single anti-sinking plate foundation form, the utility model can effectively control the size of the anti-sinking plate foundation and reduce the requirement on installation resources; meanwhile, the length of the pile foundation can be effectively reduced, and the anti-sinking plate foundation main body is supported on the seabed by using the short pile for assisting in supporting; when geological conditions are complex and the seabed soil coverage layer is thick, the method has better adaptability, and solves the problem that the size of the anti-sinking plate is too large due to poor soil conditions and insufficient foundation bearing capacity; the construction difficulty, the construction time and the use of construction resources are reduced, the material cost and the installation cost of underwater production equipment are greatly reduced, and the method has good engineering application value.

In a preferred embodiment of the present invention, referring to fig. 2, the pile cover 14 is a cylinder allowing the pile 13 to pass through, the pile cover 14 is perpendicular to the main frame 12, and the pile cover 14 is formed by rolling a steel plate.

Further, there are a plurality of piles 13, the pile sleeves 14 correspond to the piles 13 one by one, and the plurality of piles 13 can enable the whole combined foundation 1 to be supported on the seabed more stably, in this embodiment, the piles 13 are also tubular piles made of rolled steel plates.

Further, the main frame 12 is a planar rectangular frame formed by mutually perpendicular and welded multiple pieces of H-shaped steel in the same plane, and the H-shaped steel is a common engineering material in the field of ocean engineering, so that the main frame 12 can be conveniently customized at any time.

As shown in fig. 1, in the apparatus of the present embodiment, four piles 13 are provided, and correspondingly, there are 4 pile sleeves 14, four pile sleeves 14 are provided near four corners of the main frame 12, and the space surrounded by the four pile sleeves 14 is the underwater production equipment placement area 6.

Further, the top of the pile sleeve 14 is provided with a connecting device 2 for fixedly connecting the pile 13, in this embodiment, the connecting device 2 is two flanges, one of the flanges is welded and fixed on the top end of the pile sleeve 14 and is connected with the other flange through a bolt and a nut, the other flange is sleeved outside the pile 12 and is welded and fixed with the outer wall of the pile 13, a reinforcing vertical plate 7 is further arranged at the connecting position of the flange and the pile sleeve 14 for improving the connecting strength of the connecting device 2, and the reinforcing vertical plate 7, the pile sleeve 14 and the flange are perpendicular to each other.

Furthermore, a plurality of drain holes 3 are uniformly formed in the bottom plate 11, referring to fig. 1, the drain holes 3 are densely arranged on the bottom plate 11, and when the combined foundation 1 is installed, the combined foundation can be used for draining water and reducing resistance.

Further, it still includes ring plate 4, and 4 covers of ring plate are established outside pile cover 14, and in this embodiment, the perpendicular welded fastening of 14 outer walls of every pile cover has a plurality of ring plates 4, can improve pile cover 14's support strength to and the stability of guaranteeing that pile cover 14 and anti-sinking plate basis main part are connected.

Further, the device also comprises lifting lugs 5, wherein the lifting lugs 5 are vertically welded and fixed on the outer surface of the pile sleeve 14, and in the embodiment, four lifting lugs 5 are arranged towards the underwater production equipment placing area 6.

Further, the pile cover 14 is welded and fixed with the main frame 12.

The specific operation process of the utility model is as follows: the construction prefabrication and assembly welding are completed on land, the combined foundation 1 and underwater production equipment are installed, hoisted and lowered to a specified target position through a ship by utilizing the lifting lugs 5, and the combined foundation 1 is slowly hoisted and lowered into water with the assistance of an underwater robot; and confirming the in-place precision at a position, which is placed to the bottom plate 11 and is one meter away from the mud surface, continuing to place until the bottom plate 11 contacts the seabed mud surface when the precision meets the requirement, and measuring the in-place precision of the combined foundation 1 to ensure the levelness of the combined foundation 1. Referring to the levelness condition, a diver inserts the four piles 13 to the designed free mud penetration depth respectively according to the diagonal sequence under the assistance of the underwater robot, so that the overall levelness is guaranteed. Piling to a designed mud penetration depth according to the levelness condition of the combined foundation 1; after the pile driving is completed, the pile 13 is fixedly connected with the pile sleeve 14 through the connecting device 2.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the utility model is all within the protection scope of the utility model. The protection scope of the utility model is subject to the claims.

Claims (10)

1. A modular foundation for an underwater production facility, comprising: including bottom plate, main frame, stake and pile cover, the bottom plate sets firmly the lower surface of main frame constructs out and prevents sinking the board basis main part, the stake is worn to locate prevent sinking the board basis main part and is passed through the pile cover with it is fixed to prevent sinking the board basis main part, the pile cover sets firmly the upper surface of main frame, and cup joint outside the stake and with the stake is fixed.

2. Modular foundation for a subsea production facility according to claim 1, characterized in that: the pile sleeve is a cylinder allowing the pile to pass through, and the pile sleeve is perpendicular to the main frame.

3. Modular foundation for a subsea production facility according to claim 1, characterized in that: the pile is provided with a plurality of piles, and the pile sleeves correspond to the piles one to one.

4. Modular foundation for a subsea production facility according to claim 1, characterized in that: the main frame is a plane rectangular frame formed by mutually perpendicular and welded H-shaped steels in the same plane.

5. Modular foundation for a subsea production facility according to claim 4, characterized in that: the piles are four, and the pile sleeves are arranged close to four corners of the main frame.

6. Modular foundation for a subsea production facility according to claim 1, characterized in that: and the top of the pile sleeve is provided with a connecting device for fixedly connecting the pile.

7. Modular foundation for a subsea production facility according to claim 1, characterized in that: a plurality of drain holes are uniformly formed in the bottom plate.

8. Modular foundation for a subsea production facility according to claim 1, characterized in that: the pile sleeve is characterized by further comprising a ring plate, and the ring plate is sleeved outside the pile sleeve.

9. Modular foundation for a subsea production facility according to claim 1, characterized in that: the pile sleeve is characterized by further comprising lifting lugs, wherein the lifting lugs are vertically welded and fixed on the outer surface of the pile sleeve.

10. Modular foundation for a subsea production facility according to claim 1, characterized in that: the pile sleeve is welded and fixed with the main frame.

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