Marine ice-resistant adjustable platform mounting system and method for platform transportation and mounting by means of mounting system

FIELD: continental shelf development, particularly artificial islands mounted on piles or like supports.

SUBSTANCE: mounting system comprises two floating crafts, platform transportation pontoon arranged in-between, platform-bearing pile foundation, platform handling piles having parts movable in vertical direction and fixing stops. Platform transportation pontoon includes tow boat arranged in pontoon area so that tow boat immersion provides system usage in low water. Platform mounting method involves installing platform handling piles provided with movable parts sliding in vertical direction and fixing stops at base; moving pile transportation pontoon with platform installed thereon in space between platform handling piles and installing the pontoon between the platform handling piles; fastening moving parts of platform handling piles to platform bottom; discharging ballast from pile transportation pontoon to lift the platform over water surface and connecting movable parts of platform handling piles to platform handling piles by means of fixing stops; filling pile transportation pontoon with ballast to immerse thereof in water; removing ballast from pile transportation pontoon to lift the platform through height necessary for following platform loading on floating crafts; retracting pile transportation pontoon from platform; moving floating crafts to platform; transferring platform from platform handling piles to floating crafts; securing platform to floating crafts and moving platform to well drilling site; transferring platform to previously arranged pile foundation.

EFFECT: increased manufacturability and reliability, decreased labor inputs and extended operational capabilities due to provision of system operation in ice and in low water.

4 cl, 9 dwg

 

The invention relates to the field of hydraulic structures, and more particularly to means for the development of the continental shelf.

Known complex for installation of marine climbing platform and method of transportation and installation through complex for mounting marine climbing platform (see RF patent №2139973, IPC7EV 17/00, 1999).

The disadvantage of these known and the method of transportation and installation is the complexity of the complex due to the presence of special lifts and limited nautical characteristics of the floating dock, the operation of the above equipment requires highly skilled in service and has a low efficiency due to downtime of expensive equipment when you can't continuously.

Known also complex for installation of marine climbing platform with enclosure containing two floating means, located between the pontoon-Transporter mentioned platform and support base, predominantly pile (see application great Britain No. 2174743 IPC7EV 17/00, 1985. prototype complex and method).

The disadvantage of these known and the method of transportation and installation of the prototype is its complexity due to the presence of expensive crane equipment and not what bademosi display module platform with their help, as well as the impossibility of their use in shallow water.

The technical result of the claimed complex and method is to increase the manufacturability and reliability, reducing the complexity of the method, as well as enhanced operational capabilities by providing work in ice conditions and in shallow water. This greatly reduces the cost of the complex through the use of the existing operation of floating funds with efficiency up to 100%. This gives you the opportunity to immediately start drilling after disconnecting the transport ships, ice conditions does not preclude the operation, as it provides reliable confrontation ice loads at depths ranging from 1.0 m to 4.0 m

This is achieved in the inventive complex for mounting marine ice climbing platform with enclosure containing two floating means, located between the pontoon-Transporter mentioned platform and pile anchor Foundation, the fact that the complex is equipped with handling piles having movable in the vertical direction part and clamps-stops and the pontoon-Transporter is equipped with a tug and a place to host mentioned tug to reduce precipitation of the tug to the value required in shallow water.

In addition, this technical result to thetsa the these craft are marine railway ferries.

This technical result is also achieved in the way of transportation and installation through complex for the installation of offshore ice-resistant adjustable platform design, including the use of two vessels, have between them the pontoon transport and pile substructure, the fact that pre-set on the basis of handling piles having movable in the vertical direction of the part, and tabs-stops, after which the pontoon-Transporter installed on the mentioned platform is slid into the space between handling piles and feature between the latter, then the moving parts handling piles attached to the bottom platform. By pumping ballast pontoon Transporter raise the platform above the surface of the water and fix the moving parts handling piles on handling the piles by means of clamps-stops, then immersed pontoon Transporter by receiving ballast, and then by pumping ballast pontoon Transporter raise the platform on the need for further transplantation on said floating means the height, after which the pontoon-Transporter away from the platform, and the craft down to plan the form and by receiving and pumping ballast produce transplantation with handling piles on said craft, then the platform is fixed on said floating means and produce a transportation platform to the point of drilling, and then transplanted the last pre-installed pile anchor Foundation.

This technical result is also achieved by the fact that to install the platform in shallow water pontoon Transporter down under the said platform and positioned between the said floating means.

Figure 1 shows a cross-section of the platform at the time of installation on the pontoon-Transporter;

figure 2 - transport platform with pontoon-Transporter;

figure 3 - installing platform for handling piles;

figure 4 - design of latch-lock;

figure 5 and 6 - installation steps platform for handling piles;

figure 7 - loading platform on vessels (ferries);

on Fig - transportation platform to the point of drilling;

figure 9 - the platform at the time of installation of pile anchor Foundation in shallow water.

The inventive system for the transportation and installation of offshore ice-resistant adjustable platform 1, is made in the form of the block-module with necessary for the operation of equipment, contains two craft 2 with ballast tanks and systems (not shown) and the pontoon-Transporter 3 to install the platform 1 is the point of drilling in shallow water.

As floating means 2 for conveying platform 1 is used operated at the local marine railway marine ferries.

Pontoon-Transporter 3 is a pontoon with ballast tanks and system (not shown), the body of which is of simplified lines (not shown) with a thickness of 8-10 mm and a device for mooring (not shown).

The complex has a pile supporting base 4, pre-installed at the point of drilling, and is further provided with fixed handling piles 5 in the form of a pipe having movable in the vertical direction of the part 6 in the form of a pipe of smaller diameter than the pile 5, and located in the last.

Between handling piles 5 and the movable parts 6 installed tabs-lugs 7, which may be in the form of, for example, is widely known clamps-stops used for fixing the supporting pillars of self-elevating floating drilling rigs. In the present description illustrates a simplified variant of the latch-lock 7 (figure 4).

Pontoon-Transporter 3 is equipped with a seat 8 for the accommodation of the tug 9 to move during installation on the point of drilling and transportation. Pontoon-Transporter 3 and 2 ferries are equipped with the reference cells 10.

For temporary connection between a floating means 2 and pontoon Transporter 3 is nedosmotreli mooring device (not shown).

The inventive method of transportation and installation through complex for installation of marine ice climbing platform 1 is as follows.

After fabrication of the platform 1 and the corresponding platform 1 in size and displacement of the pontoon-Transporter 3 last flood by taking ballast in the ballast tanks (not shown). Platform 1 is installed on the pontoon-Transporter 3 simultaneously with the pusher 9 and the complex is transported to the base, on which a pre-set handling piles 5, having a movable part 6. Handling piles 5 is also equipped with latches-stops 7. Then the pontoon-Transporter 3 with a pre-installed platform 1 is slid into the space between handling piles have between 5 and last. Then, the movable parts 6 5 piles fixed to the underside of platform 1 and by pumping ballast pontoon Transporter 4 raise the platform 1 on the surface of the water and fix the movable portion 6 in the pile 5 by means of securing-lugs 7. Then immerse the pontoon-Transporter 3 by receiving ballast, install (or build) the reference cells 10, and then by pumping ballast pontoon-Transporter 3 raise the platform 1 on the need for further transfer to ferries 2 height (in one or several who are stages). Then the pontoon-Transporter 3 away from platforms 1 and 2 ferries down to her and by receiving and pumping ballast ferries 2 produce transplant platform 1 with the movable parts 6 handling piles 5 on 2 ferries. After that, the platform 1 is fixed on the ferry 2, for example, by welding. Ferries 2 attached to them by the platform 1 is a single strength complex - "catamaran", which provides safe transportation to the settlement excitement.

Use the "catamaran" transport platform 1 at the point of drilling on certain waters for a relatively short period of time, where it is transplanted on the pre-installed pile supporting base 4.

In case you need to install the platform 1 at the point of drilling in shallow water depth of 1.0 - 3.0 m used pontoon-Transporter 3, which reduces the draught of 2 ferries to 1.0 m (when the displacement ferries, close to the empty state). For this pontoon Transporter 3 stars located in the "catamaran" referred to the platform 1 and is placed in between the 2 ferries. This pontoon Transporter 3 can be connected with ferries 2 using the known cables and mooring devices (not shown). Pontoon-Transporter 3 can be additionally used as cargo space, temporary mo is t, the quay wall.

The claimed invention provides year-round operation adjustable drilling platforms at depths ranging from 1.0 to 4.0 m and significant savings by eliminating the need to build special ships for transportation through the use of existing in the exploitation of marine rail ferries.

The complex allows to operate year-round platform in the sea, for example, the Caspian, Black and Azov seas.

Adjustable platform set on the point of drilling fully operational, allowing, in theory, immediately starting to work in a shorter time than when installing a Jack-up and semi-submersible platforms.

The present invention replaces the expensive operation, Jack-up and semi-submersible platforms and allows you to master shallow shelf to a minimum depth of 1.0 m

The present invention replaces the expensive operation, Jack-up and semi-submersible platforms and allows you to master shallow shelf to a minimum depth of 1.0 m

1. Complex for installation of marine ice climbing platform with enclosure containing two floating means, located between the pontoon-Transporter mentioned platform and pile the support base, characterized in that the complex is equipped with handling piles having movable in the vertical direction part and clamps-stops and the pontoon-Transporter is equipped with a tug and a place to host mentioned tug to reduce precipitation of the tug to the value required in shallow water.

2. The complex according to claim 1, characterized in that the said floating means are marine railway ferries.

3. The method of transportation and installation through complex for the installation of offshore ice-resistant adjustable platform design, including the use of two vessels, have between them the pontoon transport and pile substructure, wherein the pre-set on the basis of handling piles having movable in the vertical direction part and clamps-stops, after which the pontoon-Transporter installed on the mentioned platform is slid into the space between handling piles and feature between the latter, then the moving parts handling piles attached to the underside of the platform by pumping ballast pontoon Transporter raise the platform above the surface of the water and fix the movable part of handling piles on handling the piles by means of clamps-stops, then immersed pontoon Tr is sportiest by receiving ballast, and then by pumping ballast pontoon Transporter raise the platform on the need for further transplantation on said floating means the height, after which the pontoon-Transporter away from the platform, and the craft down to the platform and by receiving and pumping ballast produce transplantation with handling piles on said floating means, then the platform is fixed on said floating means and produce a transportation platform to the point of drilling, and then transplanted the last pre-installed pile anchor Foundation.

4. The method according to claim 3, characterized in that the installation of the platform in shallow water pontoon Transporter down under the said platform and positioned between the said floating means.



 

Same patents:

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