Ice-resistant self-lifting platform for freezing shallow water and method of its installation

FIELD: construction.

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

 

The invention relates to hydraulic construction, in particular, resistant to Jack-up platforms for the development of freezing shallow water for a long period, such as the waters of the Ob-Taz Bay:

Known ice floating offshore platform for oil and gas (RF patent 67542 on CL VV 35/44 from 2007) containing surface of the upper structure mounted on a vertically located partly submerged in the water of the supporting base with tension supports for fixing the platform at the specified location. Support Foundation, in turn, consists of two parts in elevation, of the lower section, which is completely under water, and the upper plot on which rests the upper structure. The disadvantage of such structures is the inability of its use in shallow water with weak soils of the bottom at depths from 1 to 4 meters.

Known device and method for providing drilling platforms in the open sea, containing a support structure (support Foundation) and the tender barge (floating deck) (RF patent 2139220 on CL VV 35/44, EV 17/02 from 1999), which after analysis is adopted as a prototype. The disadvantage of the prototype is the impossibility of its use in severe climatic conditions of the Arctic.

The technical result of the claimed ice Jack-up platform is s for freezing shallow and, especially on the soft ground, and the method of their installation and subsequent operation is: - acceleration input field into operation by ensuring year-round use of the platform in Arctic conditions; - improving reliability and process safety during construction and drilling operations, as well as during operation and maintenance of wells and production equipment by reducing ice loads by creating a support base; - the simplification of installation works during the construction of structures on soft soils shallow waters at depths from 1 to 4 meters due to pre-ballasting the bottom plate, with subsequent fixation of the piles curved profile; - ensure that the reuse of two decks (construction and drilling) for the development of the following promising fields of this oil and gas area.

This technical result is achieved in resistant self-elevating platform for freezing shallow water because: ice Jack-up platform for freezing shallow water, comprising a supporting base, made in the form of ballasteros floating bottom with a developed surface plate, strongly connected with perpendicular installed-resistant jacket made in the form of ice-resistant cylindrical columns, several protruding toward the bottom below the bottom plane of the plate to create a leak inside this column, which is equipped with a special pipe (riser columns), designed for drilling operations, while the upper structure is made in the form of three U-shaped center-cut removable floating decks: construction, drilling and operational purposes, with U-shaped cutouts all decks are made congruent to the cross-sectional resistant jacket, with lifting mechanisms mounted on the deck around the perimeter of the cutout is designed for docking and undocking of the deck and the support block, and for lifting the boat safe from the wave height and subsequent fixation; moreover, these mechanisms can be removed during use of the deck, and then re-installed for the organization of the descent of the deck on the open water.

This technical result is achieved by the fact that ice Jack-up platform for freezing shallow water each removable deck has its own buoyancy, taking into account installed on it corresponding to the functional purpose of the process equipment, and also adapted to transport tug assistance, to prevent distortions deck otnositel the horizontal position is provided, located around the perimeter of each deck ballast partitioned capacity/pontoons, padding, which regulates the balance.

This technical result is also achieved by the fact that in the consistent way of mounting a removable decks in the first navigation period on the point of drilling tow-resistant self-elevating platform with the first removable deck construction purposes, then on the point of drilling with lifting mechanisms perform the descent of the support base with the simultaneous filling of ballast in the bottom plate, providing a preliminary docking platform on the seabed, and the final fastening of the platform on the ground carried out using a special drilling rig adapted for spudding of piles along a curved path, then set in ice-resistant support block, special pipe, the so-called riser columns, which carry through drilling the required number of wells and the second navigation period on the point of drilling tow second deck of the drilling purposes, produce the launching of the first deck, after which it disperses away from ice-bearing unit of the U-shaped neckline by tug and then using the same tug at the place of the first deck is installed is up to the second deck and produce the rise of the second deck at a predetermined height and fix it, then start drilling production wells, with the first deck tow to the dock for repair and receive next-resistant base, and the third navigation period on the point of drilling towing third deck operational purposes, which is similar install and use before the end of the development of the field, and the second deck is similarly returned to the dock for subsequent performance of functional tasks.

The proposed solution is illustrated by drawings, where: figure 1 shows a General view of the ice-resistant self-elevating platforms for freezing shallow water; figure 2 shows a section a-a figure 1 Jack-up platform; figure 3 shows towing to the point of drilling in the navigation period-resistant self-elevating platform is fixed in the lower position of the first interchangeable deck.

1 - resistant self-elevating platform (LSP) for freezing shallow water; 2-supporting basis;

3, a removable floating deck with a U-shaped center neckline;

4 - resistant jacket (FOREHEAD);

5 is a bottom balastiera stove;

6 - special pipe (riser columns);

7 - U-neckline;

8 - the mouth of the wells;

9 - marine silt bottom;

10 - piles;

11 - ice field;

12 - lifting mechanisms.

13 - rig

Ice Jack-up platform is a (LSPP) 1 (1-2) for freezing shallow water, consists of the support base 2 and the upper structure, designed as a plug-floating deck 3 with a U-shaped center cut 7. The support base 2, in turn, is made in the form of ice-bearing unit (FOREHEAD) 4 with extensive bottom Ballesteros plate 5, is additionally fixed curved piles.

LSP 1 has three interchangeable deck: deck construction, deck drilling purposes and deck operational purposes.

All removable floating deck 3 to be able to get in close contact with the installed on the seabed 9 control unit 4 or to withdraw from it after complete functional tasks have U-neck 7. The neck 7 is made congruent to the cross-sectional FOREHEAD 4 of the form.

Each replaceable floating deck 3 has its own buoyancy, taking into account installed on it corresponding to the functional purpose of the technological equipment and adapted to transport tug assistance.

Along the perimeter of the U-shaped neckline with side deck mounted lifting devices 12, which are all removable deck 3 can be integrated into or out of engagement with the support base 2, and to move and be fixed at the required height. Mechanisms 12 should be made removable and removed after the AC is doy operation of lifting/lowering the deck to accommodate other equipment.

Bottom plate 5 with a developed surface is balestibeau capacity, firmly connected with perpendicular established FOREHEAD 4, several speakers to the bottom below the bottom plane of the plate/container. The developed surface ("breadth") of the bottom plate 5 prevents the rollover from the ice nedvidek and most rational for laying on the silty bottom of the seabed. Resistant bearing block 4 is made in the form of a cylindrical column with a diameter of 15-20 m Below the estimated number of wells (including backup) in the FOREHEAD 4 are special pipe 6 (riser columns), through which the entire drilling process; however, the distance between the axes of the planned production wells 8 on the FOREHEAD are accepted not less than 3 meters Execution of the reference block 4 with specialized pipes 6 provides a platform for additional strength and stability to resist ice loads. The cross-section of the FOREHEAD 4 is designed to accommodate up to 12 inclined and horizontal directional wells for maximum coverage drainage deposits/deposits. The total height of the support base 2 as the product of the dock depends on the depth of the sea at the point of installation, subject to the necessary (safe) clearance. Mount the FOREHEAD 4 and bottom Ballesteros plate 5 Khujand is realized using a special rig, adapted to sabarinath piles 10 along a curved trajectory, in order to significantly improve the stability of the platforms monopodial type ice influences, characterized by overturning forces (nazwiskami). And since the development of the ice fields 11 different variety of directions depending on factors such as winds and currents, spudding of piles should be done on the divergent trajectories in order to improve the stability of the FOREHEAD 4 to shear and overturning the effort of moving ice fields 11 and hummocks.

Field development begins with towing in the navigation period on the point of ice-resistant drilling Jack-up platform with construction deck (see figure 3). At the point of drilling with lifting mechanisms 12 is lowered to the bottom of the support base 2, filling this ballast, and on reaching the bottom of the ascent begins deck 3 above sea level at the desired height, with the bottom already cabalistically stove even deeper into the ground, thereby providing a preliminary anchoring of the platform.

The first replacement deck for the first internavigational period the service provides reliable fixation of the support base 2 on the seabed 9. The mounting base 2 is produced using a special drilling rig adapted C is borivali piles along a curved trajectory. Then carry out the installation of pipes 6 in resistant jacket 4 through which the process of drilling.

Next, make sure the first ice drift in the reliability of the FOREHEAD 4 in opposition to ice impacts, to the point of drilling in the second navigation period towed the second deck (drill purpose). In parallel, produce the launching using the lifting devices 12 of the first deck. Reaching the waters of the sea, lifting gear 12 of the first deck 3 weaken the mesh, allowing you to bring it back from the FOREHEAD 4 of the U-shaped notch 7 with tug assistance. Then with a tug at the place of the first deck is joined to the second deck U-neck to the FOREHEAD 4, then taking the second deck using the same lifting mechanisms at a predetermined height with subsequent fixation. After this first deck using the same tow is transported to its destination (port/dock) for possible repair and re-use.

After changing decks begins drilling during the second internavigational period (and, if the process of drilling the estimated number of wells will exceed it, then drilling will continue in the third internavigational cycle).

Upon completion of drilling in the season is another change decks similar about the time, i.e. the second deck (drill purpose) replaces the third deck (operational purposes), which after lifting and fixation on the FOREHEAD there will be at sea until the end of the development of the field.

Thus, for the implementation of the outlined solutions for the routine replacement of decks you want to use only one towing vessel, because all of these decks are not self-propelled to reduce their weight, the procedure for replacing decks must be made in the period of navigation. The proposed solution is the most appropriate for a non-necessary infrastructure waters freezing for a long time and have a very short period of navigation (40-50 days).

1. Ice Jack-up platform for freezing shallow water, comprising a supporting base, made in the form of ballasteros floating bottom with a developed surface plate, strongly connected with perpendicular installed-resistant jacket, made in the form of ice-resistant cylindrical columns, multiple protruding toward the bottom below the bottom plane of the plate to create a leak inside this column, which is equipped with a special pipe - riser columns, designed for drilling operations, while the upper structure is made in the form of three with U about asnami center cutouts removable floating decks: construction, drilling and operational purposes, with U-shaped cutouts all decks are made congruent to the cross-sectional resistant jacket and lifting mechanisms mounted on the deck around the perimeter of the cut, are intended for docking and undocking of the deck and the reference block, and for lifting the boat safe from the wave height and subsequent fixation, and these mechanisms in order to save space can be removed for a period of functional use of each concrete deck, and then re-installed for the organization of the descent of the deck on the open water.

2. Ice Jack-up platform for freezing shallow water according to claim 1, wherein each removable floating deck has its own buoyancy with regard to installed on it corresponding to the functional purpose of the technological equipment and adapted to transport with one tug, and the horizontal position of the decks that rely on a centrally located reference block, a support provided at the outer perimeter bolasterone partitioned capacity/pontoons.

3. The method of successive mounting of interchangeable decks-resistant self-elevating platforms for freezing shoal, lies in the fact that in the first navigation period on the point of drilling will xirwut-resistant self-elevating platform, equipped with the first removable deck construction purposes, then on the point of drilling with lifting mechanisms perform the descent of the support base with the simultaneous filling of ballast in the bottom plate, providing a preliminary docking platform on the seabed, and the final fastening of the platform on the ground carried out using a special drilling rig adapted for spudding of piles along a curved path, then set in ice-resistant support unit special pipe called a riser string, through which carry out drilling the required number of production wells; the second navigation period on the point of drilling tow second deck of the drilling purposes, produce the launching of the first deck, then divert her away from the ice-bearing unit of the U-shaped neckline by tug, and then using the same tug at the place of the first deck install second deck and produce the rise of the second deck at a predetermined height and fix it, then start drilling production wells, and the first deck tow to the dock for repair and receive next-resistant base; the third navigation period on the point of drilling towing third deck operational purposes, which similarly in Tanglewood and use before the end of the field development.



 

Same patents:

FIELD: construction.

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

FIELD: construction.

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

FIELD: construction.

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.

4 dwg

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

FIELD: construction.

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

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

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: transport.

SUBSTANCE: invention relates to ship building, particularly, to drilling platforms and to oil and gas production at offshore deposits. Supply ship comprises solid hull and light hull of flooded pilothouse. Ship hull is composed of submarine-type solid hull with set of sealed lock hatches thereat. Besides, this ship is equipped with communication platform equipped with gate channel arranged vertically to extend through deck and bottom of said platform. Ship solid hull bottom incorporates extra sealed lock hatch equipped with the seat of sealed joint between supply ship and communication platform. Gate channel branch pipe doubles as the platform solid hull. Seats of sealed joint between supply ship and communication platform are arranged above sealed lock hatches of gate channel. Communication platform deck accommodated supply ship bottom slip. Underwater oil production platform light hull accommodates rope winches and flexible hose mechanised reels. Oil production platform solid hull outer section accommodates extra hatch of sealed lock integrated with sealed joint for mating seat at communication platform. Oil production underwater platform deck accommodates the slip for communication platform bottom.

EFFECT: expanded operating performances, chances for rescue operations.

1 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to marine structures for production and storage of liquefied natural gas. Proposed plant comprises hull 10 with the first ballast tank 11 to keep ballast water, floating structure 30 spaced apart with hull 10 through preset distance to float at the side of said hull 10. Said floating structure 20 has second ballast tank 21 to keep ballast water. Liquefaction plant 30 has one its end connected with ship hull 10 and another end connected with floating structure 20 to rest on hull 10 and said floating structure 20.

EFFECT: higher stability, fast and easy installation without improvement of existing equipment.

6 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to floating structures, particularly, to manned floating research stations. Proposed station is located on drifting ice-floe and comprises research hardware and personnel life support means. Said research hardware and personnel life support means are located on round artificial floating platform with inclined boards. Said boards have double walls with space there between being evacuated. Said station is equipped with propulsor for maneuver in water.

EFFECT: higher efficiency of research, comfortable conditions for polar explorers drifting in Arctic Ocean.

2 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention relates to platforms for underwater oil extraction in zones of extreme sea and weather conditions. Platform 10 comprises a detachable anchoring system 1, 2, 3 to anchor lines 13 at sea bed and connection pipes 14 thereat. Anchoring system comprises mooring buoy 1 for anchor lines and pipelines of connection with sea bed. Note here that said buoy is a circular element. Turntable 2 extends inside cavity 4 crossing the floating platform hull over its entire height. Said mooring buoy is secured at turntable 2 under platform hull. Turntable 2 comprises tight external structure 2b with bottom 2c tightly connected with lower end of external structure 2b. Tubular external structure 2b incorporates internal structure 2a jointed with deck level with its top end 2a1. Internal structure and tubular external structure interact, on one side, with one lower rolling bearing or slider bearing to allow rotation of internal structure without that of external structure when the platform is driven around cavity vertical axis ZZ' and tight tubular outer structure. Lower rolling or slider bearing 51, 52 is located above water surface inside tight external structure.

EFFECT: simplified and reliable design, improved servicing conditions of rolling bearings.

10 cl, 8 dwg

FIELD: transport.

SUBSTANCE: invention relates to floating oil production platform. Platform 10 comprises a detachable anchoring system 1, 2, 3 to anchor lines 13 at sea bed and connection pipes 14 thereat. Besides it comprises mooring 1 buoy for connection of anchor lines and first pipelines 14 of connection with sea bed and turntable 2 arranged inside space 4 crossing the platform hull over its entire height. Said mooring buoy is secured at turntable 2 under platform hull. Platform includes the system for connection/disconnection of said mooring buoy to/from turntable bottom wall 2c that comprises multiple lifting cables 20b and pumps 22 to deliver water in mooring buoy valve chamber 30.

EFFECT: oil production in extreme sea and weather conditions.

15 cl, 9 dwg

FIELD: transport.

SUBSTANCE: invention relates to hydrocarbon transfer system comprises marine platform, support element extending upward from platform deck surface, hydrocarbon transfer pipe with section extending from support element free end located overboard the platform to hydrocarbon store and/or processing device, and connection pipe section communicated with transfer pipe and connected with support element free end by pipe free end. Connection pipe section second end comprises connector to attach it to hydrocarbon carrier vessel. Support element comprises displacement device connected with connection pipe section free end to displace between connected and disconnected positions while support element stands still. Vertical displacement distance from displacement device to deck surface is larger for disconnected position than that for connected position. Horizontal distance from platform side is larger for connected position than for disconnected position whereat connection pipe section in its vertical orientation is located at preset distance from sea level.

EFFECT: easy and safe connection/disconnection, effective storage and transfer area.

9 cl, 10 dwg

FIELD: transport.

SUBSTANCE: proposed plant 10 comprises top floating structure 20 and completely submerged bottom structure 22. Top structure 20 can displace between working position and evacuation position. Plant 10 comprises means to 26 retain top structure 20 in working position. Said means comprises, at least, one stiff bar 90 arranged at said top structure, at least, one bar thrust 92 made nearby bar bottom end and, at least, one mate thrust 94 rigidly connected to bottom structure base 60. Every bar thrust 92 and every mate thrust 94 can turn relative to each other in joint position whereat bar 90 acts vertically to retain top structure 20 in its working position at bottom structure 22 and position of detachment top structure 20 from bottom structure 22.

EFFECT: lower labour input in mounting and recovery of working position, higher safety.

24 cl, 9 dwg

FIELD: oil and gas industry.

SUBSTANCE: platform includes supports to be attached to the ground, a platform base, on which a drilling derrick with drilling equipment is installed, and a diesel generator. The supports are telescopic; in the assembled position partially they are located above the derrick base, partially - below it. The derrick base contains pontoons installed in parallel to each other at two derrick edges and they are covered by deck. In the derrick vase there is also keel installed under the deck in the middle part; at that keel height is bigger than height of support parts which are in the assembled position are located below the derrick base.

EFFECT: improving safety of towing for an offshore drilling platform.

8 cl, 8 dwg

FIELD: oil and gas industry.

SUBSTANCE: platform includes supports to be attached to the ground, a platform base, on which a drilling derrick with drilling equipment is installed, and a diesel generator. At that, supports are telescopic; the platform base includes pontoons installed parallel on two edges of the platform base, which are covered with a deck, and the platform base includes a keel installed under the deck in middle part parallel to the pontoons. Load can be installed in lower part of the keel. Keel can consist of two parts installed on both sides of the drilling derrick. Offshore drilling platform can contain at least one additional derrick that is installed above supports. Offshore drilling platform can contain at least one valve that is installed above the support. The platform base can be equipped with accumulators connected through a switching unit to the diesel generator. Offshore drilling platform can contain additional generators installed on additional derricks. Offshore drilling platform can contain a control unit connected through communication lines to the switching unit.

EFFECT: providing unsinkability of the platform at towing during stormy weather.

8 cl, 9 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, more specifically - to floating power generation facilities. Sea floating power plant (SFPP) includes body in the form in plane of isosceles triangle at corners of which pillars with wind power plants (WPP) at their top ends are located; control house and anchor positioning system. In submerged parts of its body, through cuts are made, and freeboard height constitutes at least 0.01 of outer length of its board. WPP pillars are made as masts and are installed on upper deck. The height of WPP location on masts is not less than sum of its blade length and the greatest height of wave possible in corresponding aquatic area. Also, SFPP is fitted with equipment for electric power generation using wave energy, sea current energy, solar energy.

EFFECT: invention allows for lowering weight of structures and SFPP positioning system while increasing electric energy output and improving operation safety due to higher initial stability.

7 cl, 3 dwg

FIELD: shipbuilding; manufacture of mobile research complexes.

SUBSTANCE: proposed complex is made in form of ship with small waterplane area having upper and lower hulls interconnected by means of telescopic columns for disconnection and autonomous motion of these hulls. Lower hull is submersible vehicle and upper hull is amphibian. Both hulls are provided with greenhouses and power units for generation of energy for motion of complex, domestic and technological purposes, as well as for growing vegetables, sea products and production of distilling water by motion of spheres with plant containers located spirally on their surfaces, thus ensuring generation of electric power. In addition to vegetation tubes with plants growing chains are provided where sea products are contained for distilling sea water by change in pressure and level of illumination and growing chains for growing fish and preparation of nutrient solution for plants. Lower hull is provided with plankton trawls for delivery of plankton for greenhouse and power plants of lower and upper hulls for growing fish and sea products. Amphibian supplies fresh air to submersible vehicle through its collector; it is also used for transportation of sections for erection of scientific research station. Provision is made for delivery of light to submersible vehicle through lenses, light conduits and structural sections and light conduits of collector of vehicle.

EFFECT: environment control.

4 cl, 22 dwg

Up!