Method for pile installation in guiding means of marine platform base

FIELD: marine hydraulic structures, particularly fixed marine oil and gas production platforms.

SUBSTANCE: method for pile installation with the use of handling machine involves driving each pile in conical hole made in guiding means fixedly secured to marine platform base; installing pile and guiding means in coaxial position by guiding device having body installed on guiding members of the base so that the body may be displaced and fixed in predetermined position; lowering pile to working position; installing guiding device above water level on guiding members of platform base in predetermined position, wherein the guiding device is made as cylindrical body part and cylindrical part of guiding member secured one to another and having crossing axes so that cylindrical part of guiding means and cylindrical part of guiding member of guiding device are brought into coaxial state by corresponding linear and angular guiding member displacement; securing guiding device body with guiding members of platform base.

EFFECT: extended technological capabilities and simplified method of pile installation in working position.

5 cl, 4 dwg

 

The invention relates to the field of construction of marine engineering, namely for the construction of fixed offshore oil and gas platforms.

Known technical solution, in which the piles before dipping them into the ground oriented in the direction of driving, at least two alignment nodes placed directly on the unit for the driving of piles, which are connected with the main load-bearing elements of the unit swivel (A.S. USSR № 751904, CL E 02 D 7/06, publ. 30.07.80).

This solution is not intended for use in marine conditions, because it provides the means of solving the problem coaxial arrangement of piles and direction during the installation of piles in marine environments.

It is also known technical solution which allows you to install piles in water conditions (A.S. USSR № 796313, CL E 02 D 7/00, publ. 15.01.81), however, it also does not contain tools to simplify axial location of the piles and the guide or conductor when howling pile guides of the base of the marine environment, resulting in more overhead.

The closest to the invention is a method of installation of piles in directing the Foundation of an offshore platform, wherein the lifting vehicle every pile is slid in the cone of the guide, as the TKO associated with the base of the marine platform, while using the guide device, the casing of which is mounted on the guide member base with the ability to be moved and fixed in a predetermined position, carry out axial position of the guide piles and piles down the pile to ensure the operating position (As the USSR № 1656070, CL E 02 In 17/00, publ. 15.06.91).

Known technical solution is quite complex, requires a large amount of work in the manufacture of assistive devices in the shop or on the Assembly site, does not exclude large labor and loss of time during the installation of piles. The location of the sending device under water creates difficulties when it is used in the process. In addition, it is intended for use in special designs, offshore platforms, i.e. is not universal.

The objective of the proposed technical solution is the expansion of technological capabilities and simplify the installation of piles into position.

This goal is achieved by the fact that implemented method of installation of piles in directing the Foundation of an offshore platform, wherein the lifting vehicle every pile is slid in the cone guide rigidly connected with the base of the marine platform, with the guide device, cor is the condition which is mounted on the guide member base with the ability to be moved and fixed in a predetermined position, carry out axial position of the guide piles and piles down the pile to ensure the operating position, and a guiding device installed in the surface position on the guide member of the platform base in a predetermined position and are in the form of rigidly interconnected and intersecting the axis of the cylindrical part of the housing and the cylindrical part of the guide element, provide axial position of the cylindrical part of the guide for the piles of the platform base and the cylindrical part of the guide element of the guide device by the corresponding linear and angular movement of the latter, then rigidly connecting the body of the sending unit with the guide elements of the platform base.

In addition, as guide elements for the installation of the sending device using pipe elements are the Foundation of the offshore platform.

Mainly on the respective tubular guide member base of an offshore platform install two guide devices, the cylindrical part of the guide elements which are placed in alignment with one another and the respective guide piles of the platform base, the winding of the pile is carried out by its vertical movement by means of a lifting-transport environments is TBA.

In a preferred variant of the method in the guide device perform homoeopathie cylindrical part of the housing and the cylindrical part of the guide element, while the pile is slid by horizontal and/or vertical movements by means of lifting the vehicle on the stationary part homoeopathica guide element, which is in the open state, and after winding the freedom of movement of the pile restrict rigid connection of the rotating part homoeopathica guide element with a fixed part within preassigned gap.

In one embodiment, execution of the method on the corresponding tubular guide member base of an offshore platform install two guide devices, which carry homoeopathie cylindrical part of the hull and the cylindrical part of the guide elements, having first get homoeopathie guide elements of the guide device on the pile and rigidly associated with it with respect to the distance between them corresponding to the distance between the tubular guide elements of the platform base, the lifting vehicles move together and secure using homoeopathic buildings vanes to the respective pipe e.g. the engaged elements of the platform base, then between the guide elements of the guide device and the pile to provide in advance a specified gap.

The invention is illustrated by the drawings, is shown in Fig. 1 to 4, where Fig. 1 shows a diagram of installation of the guide device and the winding of the piles by means of its vertical movement, Fig. 2 shows a diagram of the winding of the piles by means of its horizontal movement, Fig. 3 is a perspective view of a variant of the constructive execution of the sending device of Fig. 4 is a top view in Fig. 3.

Technological complex (Fig. 1 and Fig. 2) for implementing the method includes the base 1 offshore platforms and floating lifting the vehicle 2. The base 1 offshore platform contains strictly related guides 3 for piles 4 and the auxiliary guiding device 5 mounted on the tube elements 6, which are used as guide elements for guiding devices 5.

A guiding device 5 (Fig. 3 and Fig. 4) consists of a body 7 having a cylindrical part 8 and the guide element consisting of a cylindrical part 9 and a conical collar 10, which is rigidly connected with the connecting element 11. Using the ball joint housing 7 are connected to respective rotary elements of the clamps 13 and 14, which have the ability rigid connection with the case 7 soo the respective connecting elements 15. When the clamp 13 is designed for hard coverage of tubular guide elements 6 and the yoke 14 for coverage piles 4 with pre-specified gap.

In one embodiment, namely, when the winding of the piles 4 above, the cylindrical part 9 and the tapered collar 10 can be made permanent, i.e. may be missing the hinge 12 and the fastening element 15 (Fig. 3 and Fig. 4).

The proposed method of installation of piles in directing the Foundation of the offshore platform is implemented as follows.

Using floating hoisting means 2 each pile 4 is slid in the cone of the guide 3, is rigidly connected with the base 1 offshore platform. While using the guide device 5, the housing 7 which is mounted on the guide member 6 of the base 1 with the ability to be moved and fixed in a predetermined position, carry out the coaxial position of the guide 3 for piles and piles 4, lower pile 4 to ensure the operating position.

Moreover, the guiding device 5 is installed in the surface position on the guide member 6 of the base 1 platform in a predetermined position.

A guiding device 5 is performed in the form of rigidly interconnected and intersecting the axis of the cylindrical part 8 of the housing 7 and the cylindrical part 9 of the guide element, provide axial position of the cylindrical h the STI guide 3 for piles 4 of the base 1 of the platform and the cylindrical part 9 of the guide element of the guide device 5 by the corresponding linear and angular movement of the latter, then rigidly connected to the housing 7 of the guide device 5 with the guide elements 6 of the base 1 of the platform.

As guide elements for the installation guide 5 using pipe elements 6 of the base 1 offshore platform.

On the respective tubular guide member 6 of the base 1 offshore platform install two guide devices 5, the cylindrical part 9 of the guide elements are placed in alignment with one another and the respective guide 3 for piles 4 of the base 1 platform, while the winding of the pile 4 is carried out by its vertical movement by means of lifting the vehicle 2.

In a preferred embodiment, in the guiding device 5 performs homoeopathie cylindrical part 8 of the housing 7 and the cylindrical part 9 of the guide element, the pile 4 is slid by horizontal and/or vertical movements by means of lifting the vehicle 2 on the stationary cylindrical part 9 homoeopathica guide element, which is in the open state, and after winding the freedom of movement of the piles 4 restrict the rigid connection of the rotating part homoeopathica guide element clamp 14 with a fixed cylindrical portion 9 within preassigned gap.

One prob is mportant variants of the method previously get homoeopathie guide elements of the guide device 5 on pile 4 and rigidly connected with this with respect to the distance between them, corresponding to the distance between the tubular guide elements 6 of the base 1 platform. Then, the lift of the vehicle 2 move together and secure using homoeopathic housings 7 of the guide device 5 to the corresponding tubular guide elements 6 of the base 1 of the platform and then between the guide elements of the guide device 5 and the pile 4 provide in advance a specified gap. Pile 4 using the guide device 5 is lowered along the guide rails 3 to the preset position, then secure to the ground in a known manner, for example cement.

The proposed solution allows to increase efficiency and reduce labor costs in the construction of offshore platforms.

1. The method of installation of piles in directing the Foundation of an offshore platform, wherein the lifting vehicle every pile is slid in the cone guide rigidly connected with the base of the marine platform, with the guide device, the casing of which is mounted on the guide member base with the ability to be moved and fixed in a predetermined position, carry out axial position of the guide piles and piles down the pile to ensure the operating position, characterized in that the guiding device is installed in the surface p is the position on the guide member of the platform base in a predetermined position and are in the form of rigidly interconnected and having intersecting the axis of the cylindrical part of the housing and the cylindrical part of the guide item, provide axial position of the cylindrical part of the guide for the piles of the platform base and the cylindrical part of the guide element of the guide device by the corresponding linear and angular movement of the latter, then rigidly connecting the body of the sending unit with the guide elements of the platform base.

2. The method according to p. 1, characterized in that as guide elements for the installation of the sending device using pipe elements are the Foundation of the offshore platform.

3. The method according to p. 2, characterized in that the respective tubular guide member base of an offshore platform install two guide devices, the cylindrical part of the guide elements which are placed in alignment with one another and the respective guide piles of the platform base, the winding of the pile is carried out by its vertical movement by means of lifting the vehicle.

4. The method according to p. 1, characterized in that the guiding device perform homoeopathie cylindrical part of the housing and the cylindrical part of the guide element, while the pile is slid by horizontal and/or vertical movements by means of lifting the vehicle on the stationary part homoeopathica send the element, in the open state, and after winding the freedom of movement of the pile restrict rigid connection of the rotating part homoeopathica guide element with a fixed part within preassigned gap.

5. The method according to p. 2, characterized in that the respective tubular guide member base of an offshore platform install two guide devices, which carry homoeopathie cylindrical part of the hull and the cylindrical part of the guide elements, having first get homoeopathie guide elements of the guide device on the pile and rigidly associated with it with respect to the distance between them corresponding to the distance between the tubular guide elements of the platform base, the lifting vehicles move together and secure using homoeopathic buildings vanes to the corresponding tubular guide elements of the platform base, and then between the guide elements of the guide device and the pile provide in advance a specified gap.



 

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