Method to install platform support block

FIELD: construction.

SUBSTANCE: method to install a platform support block provides for support block transportation, its submersion to the sea bottom and installation onto soil. Ballast reservoirs are used during transportation. Ballast reservoirs are inner cavities of structure elements. During installation the first installation unit is ballasted down. The shaft is put into vertical position. Its eyes are brought to the level above sea surface. Spacers are ballasted to ensure hinged connection of their eyes with eyes of the vertical shaft. The ballast is pumped from the support ring pontoons and/or radial spacers and/or vertical shaft. Spacer ends are put in contact with the support ring due to slight surfacing up of the first installation unit. Spacers are rigidly fixed. Assembly pontoons are ballasted. Its lowering to the prepared bottom section is provided.

EFFECT: simplicity of structure installation, possibility of serial construction, high repairability and possibility of re-equipment in the dock.

6 dwg

 

The invention relates to marine engineering (offshore platforms) and can be used in the formation of an artificial reason for placing neftegazoprovodov equipment when solving problems of the development of the resources of the shelf.

The known method of mounting the bearing unit of the platform, including the formation of rod shaped) spatial structure of steel rolled sections, including the formation of precast barrel supported on the sea bottom and supporting struts are pivotally connected to the middle part of the trunk (see US No. 4669917, CL EV 17/00, 1987).

The disadvantages of this method include the need for the use of crane equipment, in addition, due to the presence of a large number of nodes in the spatial structure of the platform is very large surface of its elements, which in aggressive marine environment subject to corrosion, and in the operation of the platform exposed to the icy fields of anticorrosion coatings are not effective enough, which reduces the life of the platform.

There is also known a method of mounting the bearing unit of the platform, including the execution of a hollow cylindrical barrel and the supporting struts, with support struts pivotally connected with the barrel, which is mounted anchor heel, fix freedoms the s ends of the struts to the free end of the cylindrical barrel, then the thus formed Assembly is transported to the installation site where they erect a cylindrical shaft supporting the fifth on the bottom, then release the free ends of the struts, which under the action of gravitational forces, turning the hinges are in contact with the free ends with the bottom (see EN No. 2074926, IPC EV 17/00, 1992).

The disadvantages of this technical solution is the impossibility of its use in the construction of large objects with displacement of tens of thousands of tons, and the dependence of the quality of "propping up the effect of each of the supporting struts on the quality of their contact with the corresponding area of the bottom and the strength parameters of the bottom layer, in which is fixed the lower end of the supporting strut, while the structural elements of the bearing unit "work" is disassociated from each other, all together does not provide sufficient rigidity, which does not ensure trouble-free operation under the influence of the ice fields. In addition, installation of the claimed design is quite complicated and requires the use of powerful cranes.

There is also known a method of mounting the bearing unit of the platform, including the use of ballotirovatsya containers during the transportation of the reference block, to maintain proper buoyancy when diving to the bottom m of the OC, stabilize and maintain project orientation in space when installed on the ground (see Project SPT Offsore - SIP 1 Feed Stady, October 2007). This method of mounting platform includes a mounting platform removable ballotirovatsya tanks, which remove after installation.

The disadvantage of this technical solution is that this method is not applicable during the construction of ice-resistant structures, as it involves using as the basis of spatial design collected from multiple thin enough (and therefore not sufficiently resistant to the ice effect) elements. In addition, this method cannot be used in the construction of large objects with displacement of tens of thousands of tons, including the complexity of the organization of spatio-temporal coupling by moving the nodes of the structure in the process of its installation.

The challenge which seeks the proposed solution is to enable the construction of ice-resistant structures of large objects and simplify their installation.

The technical result is that it provides the possibility of construction of high rigidity, providing "cutting" pushing up on her ice field (by minimizing the size and number of elements that interact with the ice). In addition, provided the reduction in the cost of installation design; the possibility of mass construction; reducing the complexity in the formulation of the reference block in place and when removed from the soil; high maintainability and the possibility of making a dock.

The problem is solved in that the method of mounting the bearing unit of the platform, including the use of ballotirovatsya containers during the transportation of the reference block, to maintain proper buoyancy when diving to the bottom of the sea, giving stability and preservation of project orientation in space when installed on the ground, characterized in that the structural elements form with the ability to use their internal cavities as ballotirovatsya containers made with the possibility of regulating the buoyancy of the mounting units of the reference block platform from negative to positive, while the first mounting unit includes a vertical shaft, provided with an open longitudinal technological cavity reference node, made in the form of closed polyhedral rings whose edges are made up of individual pontoons, the ends of which are rigidly fastened to each other, while the support ring rigidly attached to a vertical stem radial spacers, made in the form of individual pontoons, as the OS is material mounting units used struts, one end of each of the braces is provided with eyelets made with the possibility of the hinge fastening with eyelets vertical shaft and the other end is configured to fit to the corresponding section of the support ring, in the process of mounting the first mounting unit prittlewell, bringing the longitudinal axis of the vertical shaft vertical position and remove his eyes on a level above the surface of the sea, providing the opportunity swivel eye braces, and braces before installation Ballesteros with giving them a spatial position that provides the opportunity swivel their eyes with eyes vertical shaft, then, is evacuated from the ballast of the pontoons supporting rings, and/or radial spacers, and/or vertical shaft, ensure the convergence of the free ends of the braces with facing to the surface of a supporting ring, at the same time, if necessary, simultaneously taking ballast in braces, and after pdfsprite reference block to oltuski sites support ring attached to the braces rigidly fixed with braces in contact with structural members, preferably by welding, after which Ballesteros pontoons collected thus build with providing transportation is lowered to the prepared area of the bottom.

Comparison of the characteristics of the claimed solution with signs analogues and prototype demonstrates its compliance with the criterion of "novelty".

The characteristics of the characterizing portion of the claims, solves the following functional tasks:

Signs "...elements of design form with the ability to use their internal cavities as ballotirovatsya containers made with the possibility of regulating the buoyancy of the mounting units of the reference block platform from negative to positive..." provide transportation elements of the bearing unit towing and installation using ballasting - regulated (or pumping) of water ballast. In addition, this eliminates the need for special fastening the ballast tanks and provides the ability to move the platform to a new location.

The sign, which indicates that the vertical shaft provided with an open longitudinal technological cavity", allows free passage of the drilling tool through the vertical shaft.

Signs "...the first mounting unit includes a vertical shaft,... basic unit made in the form of a closed polyhedral rings whose edges are made up of individual pontoons, the ends of which are rigidly fastened to each other, while the support ring USTC is bonded with a vertical stem radial spacers, made in the form of individual pontoons and signs "...as the other mounting units used braces..." provide a high degree of prefabrication of the nodes of the reference block to the Assembly that minimizes the number of Assembly operations at the installation location of the reference block, shorten their duration and minimizes the risk of poor performance of construction works.

Signs "...one end of each of the braces is provided with eyelets made with the possibility of the hinge fastening with eyelets vertical shaft and the other end is configured to fit to the corresponding section of the support ring..." provide the possibility of withdrawal of the braces to the design position their protoplanet after performing a swivel with a vertical trunk.

Signs "...in the process of mounting the first mounting unit prittlewell, bringing the longitudinal axis of the vertical shaft vertical position and remove his eyes on a level above the surface of the sea, providing the opportunity swivel eye braces..." provide the ability to swivel with eye braces due to their pull afloat to the vertical lugs of the barrel and the education of their swivel in a known manner, for example, passing correspond to the third cylindrical rod through the holes in these lugs.

Signs "...braces before installation Ballesteros with giving them a spatial position that provides the opportunity swivel their eyes with eyes vertical shaft..." provide for the placement of braces afloat turning them up long forms (in this position the lugs braces protrude above the surface of the water).

Signs indicating that after executing swivel braces with a vertical stem, "is evacuated from the ballast of the pontoons supporting ring and/or radial spacers and/or vertical shaft, ensure the convergence of the free ends of the braces with facing to the surface of the supporting ring, provide contacts (preload) of the respective ends of the braces with the support ring by pdfsprite first Assembly unit.

Signs indicating that "if necessary (when performing pdfsprite first mounting unit), at the same time, taking ballast in braces", also provide contacts (preload) of the respective ends of the braces with the support ring.

Signs indicating that "after pdfsprite reference block to oltuski sites support ring attached to the braces rigidly fixed with braces in contact with structural members to provide rigidity to the whole structure supports the th block.

Signs indicating that rigid fixation of the braces with the contact elements of the design produce "preferably by welding, specify the preferred option for connecting the mounting units of the reference block.

Signs indicating that after rigid fixation of the braces with the contact elements of design "Ballesteros pontoons gathered in this way the Assembly by providing transportation and lowered to the prepared area of the bottom, provide installation support block at the bottom of the waters.

Figure 1 shows the side view of the ice-resistant support unit marine engineering structures, figure 2 - view of the basic unit 2, figure 3 shows the mounting of the unit in the dock, figure 4 shows the mounting of the unit on the water with sufficient depth to blend, figure 5 shows the process of mounting Assembly units afloat, figure 6 shows resistant jacket marine engineering structures after docking afloat.

Resistant support unit marine engineering structures includes a hollow cylindrical barrel 1, the lower end of which is provided with a reference node 2 and the hollow support struts 3, pivotally connected to the barrel 1. The vertical shaft 1 provided with a through longitudinal technological cavity isolated from the rest of its volume. The reference node 2 contains supporting the ring 4, educated at least three rigidly connected by their ends, straight pontoons 5, which in the plan given the shape of an isosceles trapezoid, with the support ring 4 is rigidly fastened to the walls of the cylindrical barrel 1 is a hollow radial struts 6. An integral part of the reference node (pontoons 5, the spacer 6 and the supporting struts 3 - tubular members of rectangular, round or other cross section. The lower ends of the support braces 3 are fixed on the wall of the support ring 4, for example, by welding. Edge ends of the support braces 3, converted to the vertical shaft 1 are rigidly connected with turned to him surface, for example, by welding. The ends of the support braces 3, converted to the vertical shaft 1 and the support ring 4, attached to the form, repeating surface areas in contact with structural elements. Wherein the longitudinal axis of the supporting braces 3 and radial spacers 6 lie in the same vertical plane. In the cavities of the supporting braces 3 posted by additional longitudinal ballast compartments 7, the cavity of which is symmetrical with respect to the shortest generatrix of the shell cross stay 3. The pontoons 5 support ring 4, the radial spacers 6, the cylindrical barrel 1 and the hollow support struts 3 are made with the ability to regulate their p is avocette from positive to negative. In the manufacture of a vertical shaft using technology used in the construction of the hull of the submarine. Other elements are simpler in construction and manufacturing technologies are not difficult. Swivel support braces 3 with a cylindrical barrel 1 is made detachable. The hinge 8 is placed on the reinforcing ring belt 9 mounted on the cylindrical wall of the barrel 1 at a depth greater than the average thickness of the ice fields on the setup support ring 4. Reinforcing ring belt 9 with the lugs 10, fixed on the outer surface of the vertical shaft.

The method is as follows.

The construction of the mounting units is in the dock by known methods (figure 3). The first mounting unit includes a vertical shaft 1 and the reference node 2. The reference node 2 are in the form of a closed polyhedral ring 4 whose edges are made up of individual pontoons 5, the ends of which are rigidly fastened to each other, while the support ring 4 is rigidly fastened to the vertical shaft 1, the radial struts 6, made in the form of individual pontoons. As other mounting units used supporting struts 3. One end of each of the braces 3 provided with lugs 11, made with the possibility of the hinge fastening with eyelets 10 in reikalinga barrel 1, and the other end of the perform with the possibility of a snug fit to the corresponding section of the support ring 4.

After the construction of the component parts of the bearing unit dock is filled with water, at the expense of own forces maintain structures emerge and take on the water with sufficient depth for docking (figure 4). In the process of mounting the first mounting unit prittlewell, bringing the longitudinal axis of the vertical shaft vertical position and bring its lugs 10 on the level above the sea surface, providing an opportunity swivel with lugs 11 of the supporting braces 3 (figure 5). Support braces 3 before installation Ballesteros with giving them a spatial position that provides the opportunity swivel their eyes 10 with the lugs 11 of the vertical shaft 1, ensuring the placement of braces afloat turning them up long forms (in this position the lugs braces protrude above the surface of the water).

Then (5) by ballasting pontoons 5 produce immersion, then the connection in the hinge connections 8 of the cylindrical barrel 1 and diagonal braces 3. After running swivel braces 3 with a vertical stem 1 pump out the ballast from the pontoons 5 support ring 4 and/or radial spacers 6 and/or vertical shaft 1, both the providing convergence of the free ends of the braces 3 facing to the surface of the support ring 4 and provide contacts (preload) of the respective ends of the braces 3 support ring 4 by pdfsprite the first mounting unit. Under the action of gravity braces 3 turn the hinges 8 and descend to the regular places (6). The speed and volume taken and pumped ballast must be designed in such a way that braces 3 fell on the support ring 4 smoothly. After pdfsprite support block 2 and oltuski sites support ring 4 attached to the braces 3, is rigidly fixed with braces in contact with the structural elements, for example by welding, ensuring the rigidity of the whole structure of the reference block.

After rigid fixation of the braces 3 are in contact with them elements of design Ballesteros pontoons 5 collected thus Assembly, ensuring they are lowered to the prepared area of the bottom.

The pontoons 5 and braces 3 are used for buoyancy and ballasting when towing, and as ballast or cargo compartments in operation. Anchor block set on the ground its reference node 2. After Assembly of the bearing unit on a set platform (known) for process equipment. If necessary, anchor the unit by pumping ballast POPs up and then towed to a repair or to another place of use. The proposed method provides lower costs; the possibility of mass construction; reduce the complexity in the formulation of reference is about a block on the field, and also when removed from the soil; high maintainability and the possibility of making a dock.

The method of mounting the bearing unit of the platform, including the use of ballotirovatsya containers during transportation of the reference block, to maintain proper buoyancy when diving to the bottom of the sea, giving stability and preservation of project orientation in space when installed on the ground, characterized in that the structural elements form with the ability to use their internal cavities as ballotirovatsya containers made with the possibility of regulating the buoyancy of the mounting units of the reference block platform from negative to positive, while the first mounting unit includes a vertical shaft, provided with an open longitudinal technological cavity reference node, made in the form of a closed polyhedral ring, the faces of which is composed of the individual pontoons, the ends of which are rigidly fastened to each other, while the support ring rigidly attached to a vertical stem radial spacers, made in the form of individual pontoons, as other mounting units used struts, one end of each of the braces is provided with eyelets made with the possibility of the hinge fastening with eyelets vertical shaft, and the other that the EC made with the possibility snug fit to the corresponding section of the support ring, in the process of mounting the first mounting unit prittlewell to give the longitudinal axis of the vertical shaft vertical position and remove his eyes on a level above the surface of the sea, providing the opportunity swivel eye braces, and braces before installation Ballesteros with giving them a spatial position that provides the opportunity swivel their eyes with eyes vertical shaft, and then is evacuated from the ballast of the pontoons supporting ring and/or radial spacers and/or vertical shaft ensure the convergence of the free ends of the braces with addressed to him by the surface of a supporting ring, at the same time, if necessary, simultaneously taking in ballast braces, and after pdfsprite reference block to oltuski sites support ring attached to the braces rigidly fixed with braces in contact with structural members preferably by welding, after which Ballesteros pontoons gathered in this way the Assembly by providing transportation and lowered to the prepared area of the bottom.



 

Same patents:

FIELD: construction.

SUBSTANCE: ice-resistant support block of a marine engineering facility comprises a cylindrical shaft, a support unit and supporting braces. The shaft is made as hollow. The shaft is hingedly connected to supporting braces. The support unit comprises a support ring. The support ring is formed by at least three rectilinear pontoons. Pontoons are rigidly connected by their ends. The support ring is rigidly fixed to the cylindrical shaft by hollow radial spacers. Supporting braces are rigidly connected to the support ring by lower ends. Pontoons of the support ring, radial spacers, a cylindrical shaft and hollow supporting braces are made as capable of their floatability adjustment from positive to negative one.

EFFECT: invention provides for the possibility of serial construction, reduced labour intensiveness of installing a support block on site and its removal from soil, high repairability and capability of re-equipment in the dock.

8 cl, 6 dwg

FIELD: transport.

SUBSTANCE: invention relates to sea oil extraction platforms. Proposed SPAR platform 200 comprises hull 2202 with central hast 204. Air- and watertight partition 210 runs across central shaft to make variable-buoyancy compartment 220 in central shaft. In compliance with some versions, central shaft bottom is exposed in sea, while in compliance with other versions, central shaft bottom is sealed. At least one pipe 224 to house riser 227 runs through partition and said variable-buoyancy compartment. Said pipe has exposed top face to allows drainage of water accumulated in central shaft to make air- and watertight seal in joint with bulkhead. In some versions, two or more air- and watertight partitions 206, 208, 210 are arranged across central shaft to form one or more air- and watertight ballast tanks 216, 218 arranged fixed between every adjacent pair of bulkheads.

EFFECT: increased platform buoyancy due to its adjustment by central shaft.

16 cl, 4 dwg

FIELD: construction industry.

SUBSTANCE: installation method of bottom complex for performing works on shelf involves assembly of tower erected on the ground and consisting of cone- and taper-shaped sections mounted in series on foundation base with sealing skirt embedded in bottom. Foundation base is installed with hoisting winches and ropes on water-borne vehicle and transported to installation site. Foundation is lowered with coordinated rope movement to bottom. Complex is built up with sections as to height which is more than depth of complex installed on bottom of water area. Vertical position of longitudinal axis of complex is ensured with simultaneous operation of jacks and vibrators arranged on external side along the perimetre of the base. Internal volume of tower is dried. Removal method of bottom complex involves filling of internal tower volume with water. Water-borne vehicle is submerged by means of method of ballast water into tanks. Sag of ropes is chosen with hoisting winches and they are fixed. Ballast water is pumped from tanks. Vibrators and jacks are activated simultaneously till skirt of foundation completely comes out of bottom ground. Complex is transported to new installation place. Complex of equipment includes tower to be installed on ground, and water-borne vehicle. Tower has foundation base with enlarged surface area and sealing skirt, hollow housing with cross section decreasing as to height so that upper section of housing installed on the ground is located above water level. Water-borne vehicle has two hinged housings equipped with tanks, and ballast water receiving and discharge systems.

EFFECT: providing reliable installation of complex on unprepared bottom ground, stability of complex at lateral loads with no anchors available.

10 cl, 3 dwg

FIELD: mining.

SUBSTANCE: system for stabilisation of sea platform mounted of gravitation foundation and anchored at sea bottom consists of multitude of sets of upper blocking elements installed on keel at lower part of platform, of great number of caissons installed at sea bottom, of great number of removable insertions each installed in each of caissons and of set of lower blocking elements in each insertion. Each set of the lower blocking elements is designed to engage with one of sets of the upper blocking elements by means of block system, when the keel is set above caissons. Insertions correspond to a tight attached to the keel cementing material pumped into insertions through the keel. The system stabilises the platform relative to forces of lateral shear and also facilitates easy removal of the platform off the caissons with insertions attached to the keel by applying upper lifting force. Further the platform can be transported and mounted of the second set of caissons arranged at the second site of sea bottom.

EFFECT: group of inventions facilitating mounting of platform ensuring good resistance to lateral shear forces and eliminating difficult and expensive operations for installation of shear skirts.

19 cl, 9 dwg

FIELD: mechanics.

SUBSTANCE: device for anchoring floating structures incorporates mooring bar with ends furnished with the appliance to turn the aforesaid rod about its axis of rotation. At that the rod free end is provided with a sleeve letting the chains or cable to pass there through. The anchor chain passed through one of the aforesaid sleeves is fastened at one end faces of the said floating structure. Besides that, to up the structure stability, the proposed device can be furnished with links connecting the free ends of both mooring rods to the structure in question.

EFFECT: anchoring system causing no floating structure trim difference and providing for stable positioning with minor drift, reduced distance between anchor and floating structure.

11 cl, 15 dwg

The invention relates to the field of drilling offshore, in particular to methods of installation drilling monoatomic reason, stabilize them on the bottom and dismantling

The invention relates to a support risers used in offshore platforms and, more specifically, to the support struts in the bottom of the floating offshore platforms

The invention relates to the field of drilling offshore, namely, a stationary abutment on the bottom of the water areas of the grounds is made of one or more tubular supports and used for placing the platform with drilling equipment

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

FIELD: mechanics.

SUBSTANCE: device for anchoring floating structures incorporates mooring bar with ends furnished with the appliance to turn the aforesaid rod about its axis of rotation. At that the rod free end is provided with a sleeve letting the chains or cable to pass there through. The anchor chain passed through one of the aforesaid sleeves is fastened at one end faces of the said floating structure. Besides that, to up the structure stability, the proposed device can be furnished with links connecting the free ends of both mooring rods to the structure in question.

EFFECT: anchoring system causing no floating structure trim difference and providing for stable positioning with minor drift, reduced distance between anchor and floating structure.

11 cl, 15 dwg

FIELD: mining.

SUBSTANCE: system for stabilisation of sea platform mounted of gravitation foundation and anchored at sea bottom consists of multitude of sets of upper blocking elements installed on keel at lower part of platform, of great number of caissons installed at sea bottom, of great number of removable insertions each installed in each of caissons and of set of lower blocking elements in each insertion. Each set of the lower blocking elements is designed to engage with one of sets of the upper blocking elements by means of block system, when the keel is set above caissons. Insertions correspond to a tight attached to the keel cementing material pumped into insertions through the keel. The system stabilises the platform relative to forces of lateral shear and also facilitates easy removal of the platform off the caissons with insertions attached to the keel by applying upper lifting force. Further the platform can be transported and mounted of the second set of caissons arranged at the second site of sea bottom.

EFFECT: group of inventions facilitating mounting of platform ensuring good resistance to lateral shear forces and eliminating difficult and expensive operations for installation of shear skirts.

19 cl, 9 dwg

FIELD: construction industry.

SUBSTANCE: installation method of bottom complex for performing works on shelf involves assembly of tower erected on the ground and consisting of cone- and taper-shaped sections mounted in series on foundation base with sealing skirt embedded in bottom. Foundation base is installed with hoisting winches and ropes on water-borne vehicle and transported to installation site. Foundation is lowered with coordinated rope movement to bottom. Complex is built up with sections as to height which is more than depth of complex installed on bottom of water area. Vertical position of longitudinal axis of complex is ensured with simultaneous operation of jacks and vibrators arranged on external side along the perimetre of the base. Internal volume of tower is dried. Removal method of bottom complex involves filling of internal tower volume with water. Water-borne vehicle is submerged by means of method of ballast water into tanks. Sag of ropes is chosen with hoisting winches and they are fixed. Ballast water is pumped from tanks. Vibrators and jacks are activated simultaneously till skirt of foundation completely comes out of bottom ground. Complex is transported to new installation place. Complex of equipment includes tower to be installed on ground, and water-borne vehicle. Tower has foundation base with enlarged surface area and sealing skirt, hollow housing with cross section decreasing as to height so that upper section of housing installed on the ground is located above water level. Water-borne vehicle has two hinged housings equipped with tanks, and ballast water receiving and discharge systems.

EFFECT: providing reliable installation of complex on unprepared bottom ground, stability of complex at lateral loads with no anchors available.

10 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention relates to sea oil extraction platforms. Proposed SPAR platform 200 comprises hull 2202 with central hast 204. Air- and watertight partition 210 runs across central shaft to make variable-buoyancy compartment 220 in central shaft. In compliance with some versions, central shaft bottom is exposed in sea, while in compliance with other versions, central shaft bottom is sealed. At least one pipe 224 to house riser 227 runs through partition and said variable-buoyancy compartment. Said pipe has exposed top face to allows drainage of water accumulated in central shaft to make air- and watertight seal in joint with bulkhead. In some versions, two or more air- and watertight partitions 206, 208, 210 are arranged across central shaft to form one or more air- and watertight ballast tanks 216, 218 arranged fixed between every adjacent pair of bulkheads.

EFFECT: increased platform buoyancy due to its adjustment by central shaft.

16 cl, 4 dwg

FIELD: construction.

SUBSTANCE: ice-resistant support block of a marine engineering facility comprises a cylindrical shaft, a support unit and supporting braces. The shaft is made as hollow. The shaft is hingedly connected to supporting braces. The support unit comprises a support ring. The support ring is formed by at least three rectilinear pontoons. Pontoons are rigidly connected by their ends. The support ring is rigidly fixed to the cylindrical shaft by hollow radial spacers. Supporting braces are rigidly connected to the support ring by lower ends. Pontoons of the support ring, radial spacers, a cylindrical shaft and hollow supporting braces are made as capable of their floatability adjustment from positive to negative one.

EFFECT: invention provides for the possibility of serial construction, reduced labour intensiveness of installing a support block on site and its removal from soil, high repairability and capability of re-equipment in the dock.

8 cl, 6 dwg

FIELD: construction.

SUBSTANCE: method to install a platform support block provides for support block transportation, its submersion to the sea bottom and installation onto soil. Ballast reservoirs are used during transportation. Ballast reservoirs are inner cavities of structure elements. During installation the first installation unit is ballasted down. The shaft is put into vertical position. Its eyes are brought to the level above sea surface. Spacers are ballasted to ensure hinged connection of their eyes with eyes of the vertical shaft. The ballast is pumped from the support ring pontoons and/or radial spacers and/or vertical shaft. Spacer ends are put in contact with the support ring due to slight surfacing up of the first installation unit. Spacers are rigidly fixed. Assembly pontoons are ballasted. Its lowering to the prepared bottom section is provided.

EFFECT: simplicity of structure installation, possibility of serial construction, high repairability and possibility of re-equipment in the dock.

6 dwg

FIELD: construction.

SUBSTANCE: superstructure is built on a building slip in a dock on a support deck installed on side walls of the dock. A transport barge that has taken the ballast is introduced into the dock under the superstructure, and the superstructure is installed by means of ballast pumping away from the barge on its deck with its subsequent transportation to a marine oil and gas field. A hydraulic engineering pocket is arranged in place of installation of a support part of a marine oil and gas production facility on the marine oil and gas field. Length, width and depth of the latter make it possible to lead the transport barge to the support part, to install the superstructure onto the support part after taking the ballast by the transport barge, and also to move the transport barge away from the marine oil and gas field after pumping of ballast from it.

EFFECT: invention makes it possible to eliminate using additional crane facilities for transportation and assembly of a superstructure of marine oil and gas production facilities onto a transport barge, and possibility to exclude construction of a marine channel for passage of a transport barge to an oil and gas field in shallow waters.

16 dwg

FIELD: machine building.

SUBSTANCE: proposed system comprises foundation 12, hydroelectric turbine 10 to rest on said foundation 12, and afloat sea ship 14 that allows detachment of said foundation. Ship 1 allows detachment of foundation 12 and its lowering, and/or lifting to position right under the ship, and its attachment to ship. Foundation 12 comprises support 32 to pass upward through ship 14 when foundation 14 is attached to ship from below. Ship 14 has opening 30 for foundation 32 to pass through when foundation 12 is mounted under ship 14 to allow turbine 10 mounted on support 32 to pass there through.

EFFECT: simplified mounting.

13 cl, 7 dwg

FIELD: construction.

SUBSTANCE: shoe comprises a body and a unit of shoe attachment to a support pillar. It has zero or positive buoyancy and is arranged as capable of changing zero or positive buoyancy to buoyancy of a low negative value. The shoe body comprises a hole for stretching of a support pillar, besides, the specified hole is arranged in the centre of the shoe and comprises vertical guide slots for interaction with racks of the support pillar. The unit of shoe attachment to the support pillar comprises two stops, every of which is equipped with a guide sleeve placed in a body, a sliding block installed in the guide sleeve, and a manual drive to move the block in the guide sleeve.

EFFECT: simplified assembly of a shoe to a pillar.

11 cl, 5 dwg

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering construction of structures and may be used for year-round drilling under conditions of the Arctic shelf. The platform comprises a bottom ballasted plate with an inbuilt support unit and a superstructure. The bottom plate is made in the form of an upper part, a lower part and a sliding sectional support unit of telescopic type. The support unit comprises telescopic sections that are separated at the installation point with a sliding mechanism. Telescopic sections, the sliding mechanism and all required auxiliary devices are installed in sluice compartments. All telescopic sections are of identical height, cylindrical or prismatic shape, and comprise guide slots on the inner and outer surface. Inner and outer cuts of the sections are selected for each other so that arrangement of sections is provided within each other with a gap sufficient for sliding and sealing of sections along the section guides relative to each other, in accordance with the telescope principle. The lower section's cut is larger than the upper one's. Sections of the support unit are arranged in a reinforced ice version. The invention also discloses methods of transportation, assembly and disassembly of a self-lifting mobile ice-resistant drilling platform of telescopic type.

EFFECT: increased reliability of a platform, lower labour intensiveness of methods of its transportation, assembly and dismantling.

13 cl, 3 dwg

Up!