Ice-resistant drilling complex for developing shallow continental shelf and method to establish ice-resistant drilling complex for developing shallow continental shelf

FIELD: construction.

SUBSTANCE: complex comprises an ice-resistant support base, made of water-displacing sections, and a superstructure mounted on the support base as capable of vertical displacement along support pillars arranged in the form of an autonomous self-rising floating drilling rig, comprising a body, support pillars with a mechanism of rising and a drilling tower. The support base is made as composite of the support and ice-breaking parts, besides, the ice-breaking part is made as capable of placement and joining with the upper part of the support part of the base under the bottom of the self-rising floating drilling rig installed on the support part. The rig body is installed as resting along the perimetre onto the ice-breaking part of the base for provision of minimum body sagging in its middle part. The method includes manufacturing, transportation and installation of an ice-breaking drilling complex for developing a shallow continental shelf.

EFFECT: higher reliability and safety of complex design and method of its establishment.

4 cl, 7 dwg

 

The claimed group of inventions relates to hydraulic structures, and more particularly to constructions ice-resistant drilling facility for the development of the shallow continental shelf and the ways of their formation.

Known hydraulic structure to empower the operation of Jack-up floating drilling rig (the rig) and the method of its formation (see patent RU No. 2040638, IPC EV 17/00 from 1993), including the upper structure with the supports and technological equipment, as well as resistant support Foundation and joints of the upper structure with resistant base. Resistant support base is made in the form attached to the bottom of the underwater housing with installed one opposite to the other two ice pillars, towering over the water, on the upper ends of which are placed guides and installed between them with the possibility of lateral movement of the cantilever beams, facing each other ends, fork made in the plan and covering resistant supports, and the upper structure is made in the form of the rig with case and three support columns with the mechanism of ascent and descent, and building the rig is based on the fork ends of the cantilever beams.

The disadvantages of this known similar are the complexity and lack of reliability m is charisma of rotating cantilever beams, the greater the deflection of the hull of the rig when it is installed on cantilever beams compared to operation on the supports because of the increased distance between the points of intersection (therefore there was no possibility to accept various stocks and goods to ensure drilling in navigational period (ice)), as well as the high complexity of manufacturing and the large metal structure consisting of two stationary parts, which must be fixed to the ground by a large number of piles.

Known ice system for exploration of the shallow continental shelf (see SU # 1822892, IPC EV 17/00 from 1990 - the prototype of the proposed complex and method)containing ice-resistant support Foundation, consisting of a displacement of the sections, and the upper structure mounted on the support base with the possibility of vertical movement on the support columns. The upper structure of the complex is an Autonomous self-elevating floating drilling rig having a housing, support columns, with the lifting mechanism and the oil rig, and the section of the support base is made in the form of segments that form when joining wells located around the support columns, and the diameter of the wells is larger than the diameter of the footing of the support columns.

Also known a method of forming ice-resistant drilling complex is and for the development of the shallow continental shelf and ice complex. Specified known method of forming ice-resistant drilling complex prototype includes transportation displacement of parts (sections) - resistant base, docking and installation on the ground by means of ballasting, the installation on the basis of the upper structure with the possibility of vertical movement on the support columns. It is characterized by the fact that the pre-to the point of drilling in ice-free period set the upper structure of the complex representing Autonomous self-elevating floating drilling rig having a housing, support columns, with the lifting mechanism and the oil rig, lift the case and fail under it wodoslawsky section-resistant base, then join the sections together with the formation around the supporting columns of wells, the diameter of which is larger than the diameter of the footing of the support columns, Ballesteros base before installation on the ground, then lower the Jack-up hull installation on the support columns before landing on his ice-resistant support Foundation

The disadvantages of the known complex and method of forming the prototype are lack of security and the complexity of the dock sections-resistant base with increased risk of collision (Nabal) joined sections of the support base with support columns for the rig. If this is m diameter formed by the segments of the base should be large enough, as such, to close all the support, leading to increased ice loads acting on the complex, and, consequently, leads to an increase in the metal. Also the disadvantage with this design is complex is that redistribution of load from the building the rig on a support base does not occur as compared with the operation in ice-free period, and the quantity of goods to work in navigational period cannot be extended.

The technical result of the claimed method of forming ice-resistant drilling facility for the development of the shallow continental shelf and ice complex, formed by the above method, is to increase the reliability and safety of structures of the complex and the method of its formation

This technical result is achieved in ice-resistant drilling complex for development of shallow continental shelf containing resistant support Foundation, consisting of a displacement of the sections, and the upper structure mounted on the support base with the possibility of vertical movement on the support columns, made in the form of Autonomous self-elevating floating drilling rig having a housing, support columns, with the lifting mechanism and the oil rig, the fact that the supporting base is made of the compound of reference and ledo is UMNO parts, and ledyanaya part is made with possibility of accommodation and mating with the upper part of the mentioned supporting part of the base plate installed on said supporting part of the self-elevating floating drilling rig, and the case mentioned setup is installed with a bearing on the perimeter at ladolemono part of the Foundation to ensure minimum deflection of the body in its middle part.

In addition, this technical result is achieved in ice-resistant drilling complex for development of shallow continental shelf also the fact that the supporting part of the base is produced with niches for setup and hold support columns mentioned self-elevating floating drilling rig, as well as those that support and ledyanaya of the base is made with an aperture for the passage of the drill string.

This technical result is achieved in the method of formation of the ice-resistant drilling facility for the development of shallow continental shelf containing resistant support Foundation, consisting of a displacement of the sections, and the upper structure mounted on the support base with the possibility of vertical movement on the support columns, made in the form of Autonomous self-elevating floating drilling rig having a housing, support columns, with the lifting mechanism and the oil rig, which consists in the transportirovke base and install it on the bottom of the sea by ballasting, as well as installation on the supporting base of the upper structure with the possibility of vertical movement on the support columns, so that the supporting base is made of a support and lealani parts, pre-made mentioned of the support base and transport them to the place of formation of the complex, then initially through ballasting installed at the point of formation of the complex of the supporting part of the base, and then the upper structure in the form of a self-elevating floating drilling rig on said support base, and lift the case mentioned above water, then get ladolemono part in the space between the bottom of the installation and the upper part of the supporting part of the base, bring ladolemono part on the support of the base, and join with the latter, then by the lifting mechanism is lowered chassis installation on ladolemono part of the Foundation, supporting its perimeter so that the deflection in the middle part was minimal, then columns of the installation raise in position by marching, push the cantilever drilling rig to provide options drilling.

The figure 1 depicts the ice complex Assembly, side view:

figure 2 shows the same top view;

figure 3 shows the ice base Assembly, side view;

figure 4 shows supports the first part of the ice-resistant base with niches;

figure 5 shows a supply lealani part of the support base to a supporting part of the base between the legs of the Jack-up rig;

figure 6 shows the coupling of the support and lealani parts of the support base;

figure 7 depicts the ice complex Assembly when extended cantilever, side view.

The claimed drilling system for exploration of the shallow continental shelf contains resistant supporting base 1 consisting of the base 2 and lealani 3 displacement of parts, and the upper structure 4 mounted on the supporting base 1 with the possibility of vertical movement on the support columns 5, made in the form of Autonomous self-elevating floating drilling rig (the rig), with the housing 6, columns 5 with lifting mechanism (not shown) and oil rig 7.

Ledyanaya part 3 of the base 1 is made with the possibility of placing and joining with the top part 8 of the supporting part 2 of the base 1 under the bottom 9, installed on said supporting part 2 Jack-up floating drilling rig 4 and case 6 installation 4 is leaning on the perimeter at ladolemono part 3 of the base 1 to provide minimum deflection of the housing 6 in its middle part for transmission with minimum bending moment of the hull 6 and the minimum deflection, which will take the maximum number of C which passes on navigational period.

The supporting part 2 of the base 1 is made with recesses 10 for mounting and supporting the supporting columns 5 Jack-up floating drilling rig 4, to ensure reliable installation and fixing.

Reference 2 and ledyanaya 3 of the base 1 is made with a through opening 11 for the passage of the drill string (not shown), which provides the possibility of drilling for protection against ice formations.

To ensure the transportation of parts 2 and 3 of the base 1 and the Autonomous self-elevating floating drilling rig 4 provides court-towing (not shown).

The inventive method of forming ice-resistant drilling facility for the development of shallow continental shelf is as follows.

The supporting base 1 made of a support 2 and lealani 3 parts, pre-made mentioned parts 2 and 3 of the base 1 and transported them to the place of formation of the complex by means of towing (not shown). Then initially through ballasting installed at the point of formation of the complex of the supporting part 2 of the substrate 1 (for extra reliability, it can be attached piles (not shown)), and then the upper structure 4 in the form of a self-elevating floating drilling rig hover over the anchor base 1 and mounted on the aforementioned support portion 2 of the base is 1, building support columns 5 in 10 niches, and lift the case 6 installation 4 above the water.

After that, by means of towing (not shown) is slid ladolemono part 3 of the base 1 into the space between the bottom 9 installation 4 and the upper part 8 of the supporting part 2 of the base 1, suggest ladolemono part 3 on the supporting part 2 of the base 1, by means of towing (not shown) to position and hold ballasting, then join ladolemono part 3 with the supporting part 2 of the base 1. Then by means of a lifting mechanism (not shown) of the lower case 6 installation 4 ladolemono part 3 of the base 1 for supporting its perimeter so as to provide the smallest bending moment acting on the body 6 and to its trough in the middle part was minimal, then the supporting columns 5 installation 4 raise in position by marching, push the cantilever drilling rig 7 to provide options drilling.

Technical appraisal and economic benefits of the claimed group of inventions are to increase the reliability and safety of the structures of the complex and the method of its formation by providing the ability to support offline platforms on the supporting surface in such a way that the bearing of the bottom of the hull of the Jack-up rig is provided on the perimeter, which reduces stress in the body, resulting in the rig can be the size of the network more reserves, allowing drilling in navigational period.

1. Drilling complex for development of shallow continental shelf containing resistant support Foundation, consisting of a displacement of the sections, and the upper structure mounted on the support base with the possibility of vertical movement on the support columns, made in the form of Autonomous self-elevating floating drilling rig having a housing, support columns, with the lifting mechanism and the oil rig, characterized in that the supporting base is made of the compound of reference and lealani parts, and ledyanaya part is made with possibility of accommodation and mating with the upper part of the mentioned supporting part of the base plate installed on said supporting part of the self-elevating floating drilling rig and hull the above setup is installed with a bearing on the perimeter at ladolemono part of the Foundation to ensure minimum deflection of the body in its middle part.

2. Drilling complex for development of shallow continental shelf according to claim 1, characterized in that the supporting part of the base is produced with niches for setup and hold support columns mentioned self-elevating floating drilling rig.

3. Drilling complex for development of shallow continental shelf pop, characterized in that the supporting and ledyanaya of the base is made with an aperture for the passage of the drill string.

4. The method of formation of the ice-resistant drilling facility for the development of shallow continental shelf containing resistant support Foundation, consisting of a displacement of the sections, and the upper structure mounted on the support base with the possibility of vertical movement on the support columns, made in the form of Autonomous self-elevating floating drilling rig having a housing, support columns, with the lifting mechanism and the oil rig, which consists in the transportation of the support base and install it on the bottom of the sea by ballasting, as well as installation on the supporting base of the upper structure with the possibility of vertical movement on the support columns, characterized in that the supporting base is made of a support and lealani parts pre-made mentioned of the support base and transport them to the place of formation of the complex, then initially through ballasting installed at the point of formation of the complex of the supporting part of the base, and then the upper structure in the form of a self-elevating floating drilling rig on said support base and lift the case mentioned above water, then get legolan the second part into the space between the bottom of the installation and the upper part of the supporting part of the base, bring ladolemono part on the support of the base, and join with the latter, then by the lifting mechanism is lowered chassis installation on ladolemono part of the Foundation, supporting its perimeter so that the deflection in the middle part was minimal, then columns of the installation raise in position by marching, push the cantilever drilling rig to allow drilling.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: method of fitting said body in unequipped bottom comprises filling inner cavities of said funnel-like shell beds with soil material. Said body is fixed in design position by installing it on mounting supports.

EFFECT: practically feasible installation, decreased labor input and material input.

2 cl, 9 dwg, 1 ex

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

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: 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: 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: 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: 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

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!