Support stand-anchor of marine platform
SUBSTANCE: invention relates to construction of platforms to mount drilling and oil production equipment in the sea. The support stand-anchor of the marine platform comprises joined upper section with the upper support site, ballast cisterns-sections and the lower drilling section, in which there is a hydraulic engine installed, to the shaft of the rotor of which a drill is connected, and a pipeline of water drain and a nozzle of water drain are connected to the stator of the hydraulic engine. At the same time on the marine platform in the control cabin the system of filling-emptying of ballast cisterns-sections additionally comprises a compressor for compressed air, the outlet of which via serially connected first valves and three-way switching valves are connected to pipelines of compressed air supply, hydraulic pumps. Between ballast cisterns-sections there are remote support sections, the upper section is made in the form of two coaxial hollow cylinders arranged relative to each other coaxially. The upper support site by means of hinge parts rigidly connected to it and the marine platform, may rotate around the common axis of the hinged joint, and with it the entire support stand of the anchor with removal of the bolt joints by means of its transition from the vertical working position into the horizontal transport position.
EFFECT: expansion of functional capabilities of a support stand-anchor and reduction of axial load.
The invention relates to the field of drilling oil and gas wells on the continental shelf, namely, for construction of offshore platforms on which is mounted drilling and oilfield equipment.
Known pile - support-anchor offshore platform, containing connected between a flange connections the upper section with the reference area, the ballast pipe section - ballast tank system filling-emptying water and compressed air and the lower bore section, in which is mounted a hydraulic motor, to the shaft of the rotor which is attached helical blade and drill roller shield-Bur, and the stator hydraulic motor connected to a water discharge line pipeline water supply and drain pipe water.
System filling-emptying ballast tanks contains a supply line of compressed air, the supply pipe and water pipe with valves-Kingston valves for draining the water (see the description of the invention to the patent of Russian Federation №2071531, IPC E02B 17/00, publication 10.01.1997).
A disadvantage of the known reference rack-anchor is the lack of functionality.
The task of the invention is the extension of functional capabilities, which include:
the reduction in axial load due to the hollow lattice distance of the reference sections;
- use isawanya reverse drill for repeated use one rack for its intended purpose and transporting drilling platform together with the stand-anchor to a new drill site.
The invention consists in the following.
Support-anchor offshore platform containing interconnected flanged and threaded joints of the upper section with the upper reference area, ballast tanks-partition system of filling-emptying water and compressed air and the lower bore section, in which is mounted a hydraulic motor, to the shaft of the rotor which is attached a drill, and the stator of the hydraulic motor is connected to the pipeline water supply and drain pipe water system filling emptying ballast tanks-sections contains a supply pipe water pipe water drain and supply line of compressed air for emptying ballast tanks-sections from the water, on the sea platform in the wheelhouse control system for filling and emptying ballast tanks-sections further comprises a compressor for compressed air, the output of which is connected in series through the first valve and the three-way switching valve is connected to the piping of compressed air, which is able to release the air from the ballast tanks-sections when filling with water through the relevant provisions of the three-way switching valve and connected with them the second air release valve into the atmosphere, hydraulic pump, the output of which through the third CL the pan is connected to the supply line of the water in the ballast tank section; hydraulic pump, the output of which through the fourth valve connected to the first supply line of the water in the hydraulic motor, when the reverse rotation of the rotor in which the output of the hydraulic pump through the fifth valve connected to the second supply pipe water to reverse the hydraulic motor between ballast tanks-sections are remote reference section, the upper section is made in the form of two coaxial hollow cylinders placed relative to each other coaxially, from which the first cylinder is made with two locking and diametrically spaced holes and is rigidly connected with the top reference area and the second cylinder is made with two diametrically spaced spring clips and is rigidly connected with the flange of the upper section, thus forming a mechanical latch, the upper support platform means rigidly connected with it and the marine platform of the parts of the hinge can rotate around the common axis of the hinge, and with it all reference rack anchor for removal of bolted joints by transferring it from a vertical operating position to a horizontal transport position.
The invention is illustrated by drawings, where: figure 1. shows-support-anchor offshore platforms, General view; figure 2 is also with the marine platform in transport is ulozhenie.
Support-anchor offshore platform contains interconnected flanged and bolted connections 1 upper section 2 with the top reference area 3, the ballast tanks section 4, between which are located remote reference section 5 and the lower bore section 6, in which is mounted a hydraulic motor 7, the shaft 8 of the rotor which is attached Bur 9, and the stator of the hydraulic engine 7 is connected to the pipeline 10 water supply and the pipe 11 draining the water. System filling-emptying ballast tanks-sections 4 contains the pipeline 12 water supply pipe 13 water drain and pipe 14 compressed air for emptying ballast tanks-sections 4 from the water.
On an offshore platform in the wheelhouse control system for filling and emptying ballast tanks-sections 4 further comprises a compressor 15 for compressed air, the output of which is connected in series through the first valve 16 and the three-way switching valve 17 is connected to the piping 14 compressed air, which is able to release the air from the ballast tanks-sections 4 when filling with water through the corresponding provision of the three-way switching valve 17, and United with them the second valve 18 release air to the atmosphere, the hydraulic pump 19, the output of which through the third valve 20 is connected to the Truboprovod 12 of the water in the ballast tanks section 4.
Hydraulic pump 21, the output of which through the fourth valve 22 is connected to the first pipe 10, the water supply to the hydraulic motor 7, when the reverse rotation of the rotor in which the output of the hydraulic pump 21 through the fifth valve 23 is connected to the second pipeline 24 water supply to reverse the hydraulic motor 7. The upper section 2 is made in the form of two coaxial hollow cylinders 25 and 26, which are located relative to each other coaxially, of which the first cylinder 25 is made with two locking and diametrically spaced holes and is rigidly connected with the upper supporting platform 3, and the first cylinder 25 is made with two diametrically spaced lugs 27 and the second cylinder is made with two diametrically spaced spring clips 28 and is rigidly connected with the upper flange 2 hours, thus forming a mechanical latch. The upper support platform 3 by means rigidly associated and marine platform 29 parts of the hinge 30 is rotatable about the common axis of the hinge 30, and with it all reference rack-anchor for the removal of bolted joints 31 by transferring it from a vertical operating position to a horizontal transport position.
Support-anchor works as follows.
Interconnected sections gateposts anchors in horizontal the salvage position (see Fig 2) together with the marine platform is generated by a tug boat in the sea and are brought to the point at which you have to install the platform. Using the possibility of rotation around the common axis of the hinge 30 of the upper support point 3, together with fixed legs-anchor, translate and fix it in a vertical position by bolts 31.
Ballast tanks section 4 is filled with water through nozzles (kingstons) 13, by translation into the corresponding position of the three-way switching valve 17 and opening valves ventilation 18, connected to the pipe 14 for venting to the atmosphere. To expedite the process of filling ballast tanks optionally use the hydraulic pump 19, the water from exiting through the valve 20 is connected to the pipeline 12. As a result of filling ballast tanks-sections is an increase in the weight of the supporting rack anchors and more dense pressing her bottom together with offshore floating platform 29 on the magnitude of the force is equal to γ V (where γ is the density of water t/m3, V - volume ballast tanks, m3). Simultaneously stepwise filling of the auxiliary ballast tanks 32 offshore platform 29 for landing it on the rack anchors and pressed to the ground. Using a hydraulic pump 21, the output of which through to the apan 22 is connected to the pipeline 10 is to supply water in the hydraulic motor 7, and by rotating the shaft 8 of the rotor and rigidly secured on the drill 9 is burying the legs of the anchor into the ground. In the process of penetration into the ground legs of the anchor is an increase in the planting of a floating platform and a more rigid fixation of a floating structure on the ground. To ensure stability of floating structures at sea state requires that the vectors lifting force γ V and the weight of the P floating structure "platform-hour" were on the same line, and the center of gravity G is positioned between them. This position ensures the stability of the structure during the excitement of the sea and its moods on the angles θ due to the emergence of restorative moment M=a sin θ γ V (where a is the distance between the points of application of the lifting force γ V and the weights P, m; γ is the density of sea water t/m3; V is the volume of impermeable submerged part of the structure "platform-hour", m3).
The same conditions for stability must be observed during transportation, offshore platform to the installation site and after excavation rack anchors from the ground.
After completion of the work on the shelf for excavation support legs of the anchor in the ground by means of the compressor 15, the output of which is connected in series through the valve 16 and the three-way switching valves 17 through line 14 is supplied compressed air in the ballast tanks section 4 to displace ballast water through the nozzles 13. Simultaneously with the blowing ballast tanks stand is draining spare gateline tank 32 offshore platform 29. After displacing the water in the ballast tanks 4 leg anchor receives positive buoyancy and from the hydraulic pump 21 through valve 23 and pipe 24 serves water to reverse the hydraulic motor 7. In the reverse rotation of the shaft 8 of the rotor and the drill 9 is hollow drill 9 from the soil. Due to removal of bolted joints 31 and rotation of parts of the hinge 30 around its axis is rigidly associated rack anchor and formed by the blowing ballast tanks 4 positive buoyancy is the translation of the rack in a horizontal transport position. With the help of the guys ends (not shown in figure 2.) and lugs 27 hour-anchor is attached to an offshore platform in the horizontal transport position. Remote support section due to its lower permeability dynamic load on the supporting rack anchors at sea state and increase its resistance. Pipelines legs of the anchor can be made flexible in the form of high pressure hoses.
The claimed invention allows to:
- to extend the functionality of the supporting struts-anchor;
to reduce the axial load due to the hollow lattice distance of the reference sections;
- reuse hours for its intended purpose and to transport drilling platform in the natural with the stand-anchor to a new drill site.
Support-anchor offshore platform containing interconnected flanged and threaded joints of the upper section with the upper reference area, ballast tanks-partition system of filling-emptying water and compressed air and the lower bore section, in which is mounted a hydraulic motor, to the shaft of the rotor which is attached a drill, and the stator of the hydraulic motor is connected to the pipeline water supply and drain pipe water system filling-emptying ballast tanks-sections contains a supply pipe water pipe water drain and supply line of compressed air for emptying ballast tanks-sections of water, characterized in that on an offshore platform in the wheelhouse control system for filling and emptying ballast tanks-sections further comprises a compressor for compressed air whose outputs are connected in series through the first valve and the three-way switching valve is connected to the piping of compressed air, which is able to release the air from the ballast tanks-sections when filling with water through the relevant provisions of the three-way switching valve and connected with them the second air release valve into the atmosphere, hydraulic pump, the output of which through the third valve is connected to pipe the water in the ballast tank section; hydraulic pump, the output of which through the fourth valve connected to the first supply line of the water in the hydraulic motor, when the reverse rotation of the rotor in which the output of the hydraulic pump through the fifth valve connected to the second supply pipe water to reverse the hydraulic motor between ballast tanks-sections are remote reference section, the upper section is made in the form of two coaxial hollow cylinders placed relative to each other coaxially, from which the first cylinder is made with two locking and diametrically spaced holes and is rigidly connected with the top reference area and the second cylinder is made with two diametrically spaced spring clips and is rigidly connected with the flange of the upper section, thus forming a mechanical latch, the upper support platform means rigidly connected with it and the marine platform of the parts of the hinge can rotate around the common axis of the hinge, and with it all reference rack anchor for removal of bolted joints by transferring it from a vertical operating position to a horizontal transport position.
SUBSTANCE: versions are disclosed regarding implementation of designs of a gravity foundation, which comprises the first and second extended foundation sections divided with an open area and made as capable of maintaining weight in water for the specified structure and resting against the bottom of the water area, and an upper section arranged above the specified open area and made as capable of passing at least partially above water surface to maintain the upper structures. Some versions of implementation additionally contain the first and second inclined sections, which connect foundation sections with the specified upper section.
EFFECT: improved design.
20 cl, 8 dwg
SUBSTANCE: invention relates to ship building, particularly, to sea gravity ice-breaking platform to be used in shallow water. Said platform comprises bearing plate composed of hollow body dividing in compartments filled with ballast and top displacement hull with processing and ship equipment built in bearing base deck closed elevation to uncouple them. Inner boundary of said deck elevation is equidistance in plan with floating structure outlines with difference in sizes defined by the relationship: δ=δï+δã, where δis aforesaid difference, δï is maximum sum of construction deviation of sizes ob said body and hull from rated values, δãis guaranteed clearance required for alignment of top structure with platform bearing base outline.
EFFECT: higher operating efficiency in ice.
2 cl, 2 dwg
SUBSTANCE: invention relates to sea gravity platforms for exploration of oil and gas deposits at continental shelf. Proposed platform comprises submersible offshore platform composed by bottom and top bearing plates, sidewalls and internal bulkheads. Bell consisting of separate sections is hinged to submersible platform bottom part. Every said section comprises vertical wall, stiffness ribs and guide pipes. Stiffness ribs have support elements at the points of abutting on bottom plate. Submersible platform sidewalls includes element for attachment of said bell in transport position and recesses to accommodate retainer pints.
EFFECT: higher stability, low draft, fast assembly and disassembly.
SUBSTANCE: platform comprises a support base made in the form of a bottom board with a developed surface, strongly connected with a perpendicularly installed ice-resistant support block, somewhat protruding towards the bottom below the level of the near-bottom plane of the board. At the same time the ice-resistant support block is made in the form of a cylindrical column; special pipes - water-separating columns installed into the ice-resistant support block, through which operating wells are drilled; a superstructure made in the form of three replaceable floating decks with U-shaped cuts in the centre: decks of civil construction purpose, decks of drilling purpose and decks of operational purpose, at the same time U-shaped cuts are made as congruent to the cross section of the ice-resistant support block; detachable lifting mechanisms installed on the outer side along the perimeter of the U-shaped cut of the deck, engagement or disengagement with the support base is provided, as well as movement and fixation of the deck at the safe height of the ice-resistant support block; piles for fixation of the support base drilled with a drilling plant along a curvilinear trajectory provide for safe operation of the structure.
EFFECT: increased reliability of operation and process safety of an area of water during civil construction and drilling works.
3 cl, 3 dwg
SUBSTANCE: support structure of a marine complex, designed for installation in shallow water, is characterised by the fact that it comprises at least two supports installed in shallow water, every support is made of at least one rigid shell closed along the perimetre and filled inside with stone material, besides, the lower shell of the support is installed on the sea bottom, and each of the above installed shells in the lower part is made of smaller size along the perimeter that the perimetre of the upper part of the more lower shell. Besides, at least a part of the upper shell is made with a cone shape. Each support is made as capable of installation of process objects and equipment of the marine complex and placement of elements that combine separate process objects into a whole marine complex between supports. The specified upper shell has a diameter in the range from 30 to 60 metres.
EFFECT: provision of efficient protection against ice and wave loads, reduction of construction time, lower material intensity.
24 cl, 12 dwg
SUBSTANCE: method for coupling of a floating caisson, having funnel-shaped foundation shells, with a base (also with unprepared bottom of a water area), includes fixation of the design position of the floating caisson by means of its installation onto mounting supports or piles and filling with a material of artificial base into internal cavities of the funnel-shaped foundation shells. Actions of base protection (including an artificial one) are implemented from washing with flows of water that washes it.
EFFECT: increased reliability and durability of a base in a floating caisson, increased manufacturability: its coupling with a base.
7 cl, 1 ex, 1 tbl, 6 dwg
SUBSTANCE: shallow-draught self-lifting floating plant comprises a body with an upper deck, a bottom, side walls and supports with lifting mechanisms. Along all or a part of side walls outside the body from the bottom level there are floatage compartments not reaching to the upper deck.
EFFECT: provision of maximum increase of floatage of a plant with minimum increase of its mass, which makes it possible to minimise subsidence of a plant for its operation in shallow areas.
FIELD: oil and gas industry.
SUBSTANCE: group of inventions refers to designs and formation methods of ice-resistant drilling facilities for development of shallow marine continental shelf. Drilling facilities include a self-lifting floating drilling rig with a cantilever, which has a housing and supports, at least one of which is ice-resistant, as well as drilling platform facilities with an ice-resistant housing, which can be installed in a fixed manner at the sea bottom and has upper superstructure for arrangement of equipment. Housing of the drilling rig is equipped at least with two retractable slides oriented towards the drilling platform facilities and mounted so that they can be moved in horizontal plane to transfer the load from the rig housing by means of the above slides to the drilling platform facilities. In the drilling platform facilities housing there are seats corresponding to retractable slides of the self-lifting floating drilling rig. Ice-resistant support of the drilling rig is mounted so that it can be borne against the soil to transfer the load to the sea bottom. The rest supports of the rig are non-ice-resistant and mounted so that they can be lifted above the rig housing after the load transfer from the housing through the drilling platform facilities and ice-resistant support to the sea bottom.
EFFECT: improving reliability at simplifying the design of the facilities, as well as enlarging its operating capabilities by installing the facilities in shallow water.
4 cl, 10 dwg
SUBSTANCE: ice-resistant monopod self-rising floating drilling rig has a support base and an upper body with a sliding console and a drilling tower, mounted as capable of vertical displacement by means of climbing the support pillar, firmly attached with the support base. The support pillar of the rig is arranged as transparent. The diameter of the specified support pillar makes at least 0.25 and not more than 0.3 of the support base diameter. To protect the drilled well against ice impact, the rig is equipped with a protective pillar, mounted in the space under the drilling tower with the possibility of deepening into soil and attached with the upper end to the upper body of the rig. For the possibility to evacuate the well upon completion of drilling, in the stern part of the support base there is an opening. The protective pillar is fixed with the upper end to the upper body of the rig by means of the bracket mounted on the latter.
EFFECT: invention makes it possible to increase reliability of a structure under conditions of freezing water areas, in soils with low bearing capacity.
2 cl, 5 dwg
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
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
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
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
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
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.
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.
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
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
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