Offshore floating platform

IPC classes for russian patent Offshore floating platform (RU 2519580):

E02B17/02 - placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto

B63B35/44 - Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices

B63B35/34 - Pontoons (floating bridges E01D0015140000)

Another patents in same IPC classes:

Support stand-anchor of marine platform / 2516315

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.

Design of gravity foundation / 2515446

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.

Sea gravity platform / 2512783

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=δ_ï+δ_ã , where δ is aforesaid difference, δ_ï is maximum sum of construction deviation of sizes ob said body and hull from rated values, δ_ã is guaranteed clearance required for alignment of top structure with platform bearing base outline.

Sea gravity platform / 2502630

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.

Ice-resistant self-lifting platform for freezing shallow water and method of its installation / 2499098

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.

Support structure of marine complex, support and method of support structure assembly / 2488660

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.

Method for coupling of floating caisson, having funnel-shaped foundation-shells, with base / 2484206

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.

Shallow-draught self-lifting floating plant / 2478752

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.

Ice-resistant drilling facilities for development of shallow marine continental shelf, and formation method of ice-resistant drilling facilities for development of shallow marine continental shelf / 2478057

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.

Ice-resistant monopod self-rising floating drilling rig / 2477351

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.

Floating platform / 2518779

Floating platform contains connected by at least one fixing element at least two floating elements each one of which consist of two side faces with at least one vertical projection on each of them with at least one vertical recess on each of them matching vertical projection. Vertical projection is made with narrowed portion changing into widened towards periphery portion to form supporting pad. Vertical recess features narrowed portion changing over into part widened towards the centre to from resting pad. On one of side faces at both sides of vertical projection there are flanges being supporting for corresponding fixing element. On the second side face at both sides of vertical projection there are two projections: one is at one side of this vertical projection and at least enveloping at least from above the corresponding fixing element, and the other is at other side of this vertical projection and at least supporting for corresponding fixing element. These two projections are parts of mating sockets of corresponding fixing elements.

Sea gravity platform / 2512783

Marine ice-resistant floating platform / 2510756

Invention relates to ship building, particularly, to production of ice-resistant platforms for exploration of freezing sea offshore oil and gas deposits. Proposed platform is equipped with remote turret assembly consisting of the block accommodating the turret and located outside platform hull to allow the latter to turn in external force main vector direction and to be retained in place by anchor system connected with said turret. Said block with turret are located under water ahead of fore perpendicular at the distance not smaller than half the difference between platform maximum length and that between perpendiculars. Block top is located level with the platform base plane. Said block features the hull axially symmetric shape with respect to vertical axis and is secured to platform hull with the help of corbel shaped to trihedral pyramid with clearance between ribs and facing the hull stem by its base. Pyramid two ribs are located in the platform base plane while third rib rests on said stem. Said rib features sharpened top edge.

Floating platform / 2509025

Invention relates to floating craft, particularly, to pontoons, floating docks and rafts. Floating platform comprises at least two flowing elements interconnected by at least one lock and composed by two sides with at least one vertical ledge at every said side and at least one vertical recess mating said ledge. Top face and bottom make hollow hull. Vertical ledge features narrowed part changing over in widened to make bearing plate. Vertical recess features narrowed part changing over into part widened towards the center to make bearing plate. One of said sides has locking element covering from above said ledge and bearing ledge on opposite side from said ledge. Support flange for locking element on side, on both sides of vertical ledge. Extra external ledge is made on side between vertical ledges.

Floating platform / 2508225

Floating platform comprises at least two floating elements jointed together by at least one fastening element. Every floating element consists of at least two side faces with at least one vertical ledge at every said two side faces. Besides, every side face has one vertical recess mating said vertical ledge. Top face and bottom make hollow hull. Also, there is one eye to accommodate fastening element. Every said vertical ledge and every vertical recess are made at the part of appropriate side face to make thrust platform at said ledge and thrust platform at said recess.

Mooring turret of drilling ship / 2508223

According to the invention, inside the housing of a drilling ship mooring turret, which has a cylindrical housing with a drilling shaft and an anchor retention system of the ship, in its lower part there installed is an annular cylindrical structure with ballast compartments, which can move vertically along guides below the main plane of the drilling ship. Inside the shaft there arranged are deflectors located along the perimeter of the shaft on its walls above the ship waterline.

Underwater rig for development of hydrocarbons (oil and gas) deposits in arctic shelf / 2507382

Underwater rig comprises two submarines, one making deep-water drilling complex. Said complex consists of two modules, one making process module for executing the entire cycle of well construction and another one making the drilling module. Second submarine represents a nuclear underwater power production complex. Process module comprises drilling module supercharging system, storage battery compartment connected with cable joint. Process module top section is equipped with float emergency chamber with docking assemblies and self-propelled submarine while bottom section is provided with lock chamber with lifter. Drilling module is arranged vertically relative to process module and connected therewith by pipeline and power cables. Drill rig with hydraulic drive is arranged at drilling module centre. Bottom thrust plate, set of preventers, drill tool are arranged in drilling g module axial plane while pipe feed and making-up automatic device is arranged on opposite side.

System and method of ship active and passive stabilisation / 2507105

Invention relates to active and passive stabilisation of a vessel, for example, ships, vessels for operation in shallow waters, floaters, drill rigs and lifting cranes. Vessel 10 is equipped with buoyancy and/or ballast cisterns 11a-d. The latter have openings 12a-d made in vessel bottom. Said openings allow passage of notable flow of water without cavitation of whatever other type of drag. System comprises means 13a-d for feeding fluid into cisterns 11a-d controlled to ensure opposition to external force action to motion of ship vessel 10. Invention covers also the method of active and passive stabilisation with the help of above described system.

Floating element for erection of floating platform / 2505450

Invention relates to floating means intended for specific purposes, particularly, to structures of floating elements that make identical sections of construction of floating platforms. Floating element comprises at least two sides with at least one vertical ledge at said two sides with at least one vertical recess corresponding to said vertical ledge, top side and bottom to create hollow body with at least one ear for fastener. Every vertical ledge and appropriate vertical recess are composed by at least three faces two of which parallel and perpendicular to third face.

Floating platform / 2504498

Invention relates to special-purpose floating means, for example, pontoons, floating docks, rafts, etc. Floating platform comprises at least two floating elements connected by one joint, each consisting of at least two lateral faces with at least one vertical ledge at each lateral face with at least one vertical recess complying with vertical ledge, top face and bottom that make hollow hull with at least one lug to accommodate connection element. Every vertical ledge and appropriate vertical recess are composed by at least three faces two of which parallel and perpendicular to third face.

Floating platform / 2508225

FIELD: oil and gas industry.

SUBSTANCE: invention is related to facilities of the continental shelf development. An offshore floating platform contains an undersea displacement module, a support subsea module with rigid support columns and binders, and straining ties fixed at seabed anchors. The support columns and binders can be detached from the undersea module in order to escape quickly from an ice-hazardous area and to return back to the abandoned place. The subsea module is made of individual sealed pontoons interconnected by rigid ties capable of limiting relative motion. The support columns of the subsea module are equipped with mechanisms for connection to pontoons of the undersea module and for interconnection of the modules.

EFFECT: improved reliability of the modules coupling/decoupling, simplified ballasting process.

6 cl, 5 dwg

The invention relates to the development of the continental shelf and with the greatest effect can be applied to deep-water platforms with tension supports.

Famous sea floating production platform (see U.S. patent No. 5439321, IPC⁸E02B 17/00, 1993), containing a floating semi-submersible module with equipment for production of hydrocarbons, in the operating mode moored to a small platform with wellheads, which has a tension connection, mounted on the bottom anchors, while the upper deck mentioned mining platform is constantly above the surface.

The shortcoming of the specified mining platform is that it cannot be used in ice conditions, so as not protected from the effects of a moving ice field.

Also known offshore floating production platform (see RF patent №2124455, IPC⁸B63B 35/44; E02B 17/00, 1995), taken as the prototype of the claimed invention, containing underwater wodoslawsky module supporting surface module through a rigid supporting columns with the connecting elements, and the tension ties, mounted on the bottom anchors, and support columns, with the connecting elements are made detachable from the underwater module for quick care platform of dangerous ice conditions in the area and provide the possible return to the abandoned place.

The disadvantage of this known offshore floating platform prototype is a significant intensity and displacement underwater module, as well as the complexity of the design and process of the production platform to the point and removing it from the point, because of the need for ballasting the underwater module for maintaining tension in relationships and retaining surface of the module above the surface.

The technical result of the claimed invention is the reduction of metal consumption while increasing the reliability of the docking and undocking of modules and simplifying the process of ballasting.

This technical result is achieved in the offshore floating platform containing underwater wodoslawsky module supporting surface module through a rigid supporting columns with the connecting elements, and the tension ties, mounted on the bottom anchors, and support columns, with the connecting elements are made detachable from the underwater module for quick care platform of dangerous ice conditions in the area and ensure a return to the abandoned place, the fact that the underwater module is made from a separate pressurized pontoons interconnected by rigid links, with the possibility of limited mutual displacements, these columns of the surface module is equipped with mechanisms is soedineniya with underwater pontoons module for fixing the mentioned modules together.

This technical result is achieved by the fact that the said rigid links interconnected by an intermediate compensator and the fact that the mentioned intermediate compensator is made of a round shape and made of elastic material.

This technical result is also achieved by the fact that the said rigid connection is made curved to increase their flexibility and ease of movement of the pontoons.

Also this technical result is achieved in that on the upper deck of the pontoons underwater module mounted catchers, and the bottom surface of the module is made deeper, adequate in size and shape of said pilot pin; and the fact that the above mentioned mechanisms of displacement connection modules made bayonet.

Declare offshore floating platform represented in the drawings, where:

figure 1 is a - type platform side before you dive underwater pontoons module;

figure 2 is a view of a figure 1 (a connection node before you dive underwater pontoons module);

figure 3 - type platform side in the working position (after connecting to the underwater pontoons module);

figure 4 is a view In figure 3 (the connection node in the working position);

figure 5 - view From figure 4.

Declare offshore floating platform includes a surface module 1 on the hard reference to Hannah 2 with the connecting elements (pontoons) 3 and the underwater module, consisting of pontoons 4 with catching 5, connected by rigid links 6 through the compensator 7. Underwater module is equipped with a tension ties 8, mounted on the bottom anchor 9. The bottom surface of the module 1 has recesses 10 for interfacing with catching 5.

In each of the rigid support columns 2 surface module 1 is mounted a bayonet mechanism connection with underwater pontoons module 4, consisting of a hydraulic cylinder 11, the coupling rod 12, the rotation mechanism 13, the locking mechanism 14 and cross members 15. The connecting rod 12 is located in the guide tube 16, the space between the thrust 12 and the guide tube 16 is filled with a rubber seal 17.

In the pontoons 4 underwater module provides cross-shaped cavity 18 for the passage of the spider 15 in the recess 19, as well as cross-shaped grooves 20 for fixing the cross 15.

Initially on the point-based offshore floating platforms are installed at the specified depth pontoons 4, fixed to a bottom anchor 9 using vertical tension ties 8.

Surface module 1 using the positioning system focuses on the pontoons 4 and taking the ballast begins to sink so that the pilot pin 5 entered into the recesses 10, made in the pontoons surface 3 of the module 1. Landing accuracy is provided by the compensator 7, the deformation of which compensates the difference between the stage the Cove sizes between catching 5, mounted on the pontoons 4 subsea module and the counter-recesses 10 surface of the module 1.

After complete immersion of the surface of the module 1 on the pontoons 4 is required to connect the modules. This operation is performed by bayonet connection mechanism that is installed in each of the supporting columns 2 surface module 1.

Due to the extension rod of the hydraulic cylinder 11 of the connecting rod 12 of the crossbar 15 down, d-pad 15 comes in a cruciform cavity 18 of the pontoon 4 and passing through the cavity, is located in the recess 19. Further, due to the rotation of the rotation mechanism 13, the cross-piece 15 is deployed at an angle of 45°. The retraction of the rod of the hydraulic cylinder 11, the reverse movement rises the cross-piece 15, which is cross-shaped groove 20, is made in the inner part of the pontoon 4. Then with a wedge locking mechanism 14 is fixed with the connecting rod 12, thereby rigidly connecting with the body surface of the module 1. Then by blowing ballast tanks (not shown) surface of the module 1, trying to reach, by means of the coupling rod 12 and crosses 15 lifts pontoon 4, and due to this, you create a desired tension in the vertical tension ties 8. Due to strained state of limited vertical and horizontal movement of the platform when the excitement and action of the wind.

Work devices fastening surface of the module 1 to the pontoons 4 subsea module is performed synchronously. To ensure that operations on consolidation is a system of underwater surveillance (not shown).

The claimed invention allows to reduce the intensity of the platform and to simplify the processes of emergency care platform with a point and its subsequent return and installation.

1. Offshore floating platform containing underwater wodoslawsky module supporting surface module through a rigid supporting columns with the connecting elements, and the tension ties, mounted on the bottom anchors, and support columns, with the connecting elements are made detachable from the underwater module for quick care platform of dangerous ice conditions in the area and ensure a return to the abandoned place, characterized in that the subsea module is made from a separate pressurized pontoons interconnected by rigid links, with the possibility of limited mutual displacements, these columns of the surface module is equipped with mechanisms in connection with underwater pontoons module for fixing the above-mentioned modules between themselves.

2. Offshore floating platform according to claim 1, characterized in that the said rigid links connected to each other through the m intermediate expansion joint.

3. Offshore floating platform according to claim 2, characterized in that the said intermediate expansion joint is made of a circular form.

4. Offshore floating platform according to claim 1, characterized in that the said rigid connection is made curved to increase their flexibility and ease of movement of the pontoons.

5. Offshore floating platform according to claim 1, characterized in that on the upper deck of the pontoons underwater module mounted catchers, and the bottom surface of the module is made deeper, adequate in size and shape of said catching.

6. Offshore floating platform according to claim 1, characterized in that the said connection mechanism displacement modules made bayonet.