System of barge with stabilised vertical rocking for craneless installation of superstructure on marine platform

FIELD: transportation.

SUBSTANCE: invention relates to floating barges used to install a superstructure for marine platforms, more specifically, to systems and methods of stabilisation of vertical rocking caused by wave impact at the barge system in process of superstructure installation. One or more damping plates may be connected in the position below the water surface with one or more barges for changing the period of barge movement relative to the period of wave motion for better stabilisation of the barge and resistance to vertical rocking. The damping plate may be connected between barges or at the end or side of the barge. Each barge may contain a damping plate, and damping plates may be connected to each other with the possibility of disconnection. Additionally the damping plate may turn in the upward direction in process of superstructure transportation to the place of installation for reduction of hydraulic resistance and then turn into submersible position during installation of the superstructure.

EFFECT: technical result is achieved in increased extent of resistance of a barge system to vertical rocking caused by wave impact when using the system for installation of a superstructure onto marine platforms.

20 cl, 23 dwg

 

Background of invention

The technical field to which the invention relates

The present invention relates generally to floating barges used for the installation of topsides for offshore foundations, and, more specifically, to systems and methods of stabilization heave caused by wave action on the system of barges during installation of the upper structure.

Description of the prior art

Spar platform is a type of floating oil platform, typically used in deep waters, and is one of the biggest naval bases in the operation. Spar platform includes a powerful cylinder or housing that supports a typical topside of the drilling rig. The cylinder, however, not along the entire length of the bottom of the sea, but instead is placed on the multiple anchor anchor ropes. Typically about 90% of the Spar is under water. Powerful cylinder serves to stabilize the platform in the water and moves to absorb the force potential high waves, storms or hurricanes. Minor move and secure Central bore also provide excellent configuration for deep-sea work. In addition to building three other major part of the Spar include anchors, the top structure and the riser. Spar is typically based on generally accepted the th anchor system to maintain position.

Installing a deck or topside floating on the sea base has always been a problem, especially on floating drilling rigs barge type with a large draught like Spar, which are set at a relatively large depth. In the past the court of high capacity, including, but not limited to, crane barges, used for installations of the topsides. In the conventional programmes of work of the upper structure requires repeated lifting, for example five to seven climbs, to install just the top of the structure due to the lifting power available to the ship large cargo capacity and increasing the size of the upper structure. Due to repeated lifting the weight of steel per unit area of the upper structure may be greater than the upper structure of fixed platforms installed in one lift. If the weight of the upper structure is reduced, the weight of the Spar hull to support the upper structure can also be reduced. The same principles apply to other naval bases, to which may be attached to the upper structure.

In recent times, not system catamarans are used to set the upper structure on the Spar platform for solving the above problems associated with the dimensions. Not the way is a concept installation of the topside as adenosylmethionine deck on the Spar hull, in which the upper structure is loaded and transported by at least two without cranes on barges to the installation site for the Spar hull. At the installation site without cranes barge are two sides of the Spar hull with superstructure above Spar chassis, height adjustable between the upper structure and the Spar hull and superstructure is mounted on the Spar hull. Installation of the topside on the Spar building without cranes method can provide a high ratio of Assembly and pre-commissioning work at the completion ashore prior to installation on the Spar platform, which can significantly reduce the duration and cost stage of commissioning in the open sea. Not the installation method involves the installation of integrated topside or production deck on fixed or floating basis without any heavy lift cargoes.

However, in order not install the upper structure without cranes barge must be separated. The separation causes a significant load on the barge, primarily because of the frequency and time interval of the wave motion on each barge. Vertical movement of the barge from such wave motion is called "vertical motion". Vertical pitching the most significant on the barge, when the direction of the wave pushes the barge lane is anticolana the longitudinal axis of a typical rectangular barge, have a length (from fore to aft) is significantly greater than the width (cross), the so-called "side wave". Typically at least a vertical pitching occurs when the direction of the wave pushes a barge in parallel along the longitudinal axis, the so-called "counter waves", with intermediate vertical motion occurring when the direction of the wave is at an angle, for example 45 ° to the longitudinal axis, the so-called "stern wave. Depending on the wave period and, thus, the distance from the top to the top of one barge can be at the top of the wave, while the other barge at the lowest point of the wave, and then the first barge may be at the lowest point, while the other barge on the top, as the wave continues to move through the barge.

Similar questions and problems arise with not a single systems barges. In single systems barges topsides loaded on a single barge, the upper structure is transported to the installation site on a barge, the barge is typically placed over and between the two parts of the sea bottom and the upper structure mounted on it. A single barge is subjected to a similar vertical motion and differential movement relative to the sea base.

With relatively stable marine base and relatively unstable barge is, experiencing the influence especially of airborne waves, the movement of the upper structure on the sea base can be difficult. Vertical pitching leads to a significant differential movement between the superstructure and the marine base and difficulties in a smooth and efficient installation of the upper structure on the marine base.

Thus, there remains a need to create a stable system of barges to not install the upper structure.

The invention

The present invention increases the degree of resistance of the vertical rolling of the system of barges from wave motion, as the system is used to set the upper structure on the sea base. One or more damping plates can be connected to a position below the water surface with one or more barges to change the resonant period of the movement of the barge or barges relative to the period of the wave motion for better stabilization of the barge and resistance to vertical motion. In at least one embodiment, the damping plate may be connected between the barges or at the end or side of the barge. In at least another embodiment, each barge can contain a damping plate and the damping plate with removable can connect to each other. Addi is entrusted, the damping plate can be rotated in the upward direction during transport of the upper structure to the installation site to reduce the hydraulic resistance during transport and then be rotated in a submerged position during installation of the upper structure on the marine base.

The present invention provides a system catamaran for installation of the topside marine base containing at least two floating vessel, with each top, bottom and sides, and a damping plate connected to at least one floating vessel at least partially below the level of the water near the ship, and the damping plate is made with the possibility of changing the characteristics of the vertical stabilizer system catamaran sea wave having a predetermined period, and a modified characteristic heave is compared with the characteristic of the vertical stabilizer system of the catamaran without damping plate.

The present invention also provides a method of stabilizing the system catamaran containing at least two floating vessel and made with the possibility of the location of the upper structure at the marine base, containing the following steps: providing at least two floating vessels with damping plates is th, installed on at least one of the floating vessels; installation of the topside on floating vessels; transporting the upper structure to the installation site; the location of the damping plate below the water surface near the at least one floating vessel and its passage from the at least one floating vessel; positioning the upper structure at the marine base; removing the upper structure from floating vessels; removal of floating vessels from under the upper structure.

The present invention also provides a system for installation of the topside marine base containing at least one floating vessel containing the upper part, lower part and sides, and a damping plate, connected to a floating vessel in a position at least partially below the level of the water near the ship, and the damping plate is made with the possibility of changing the characteristics of the heave of the floating vessel on the sea wave having a predetermined period, and a modified characteristic heave is compared with the characteristic heave of the floating vessel without damping plate.

The present invention additionally provides a method of stabilizing system containing at least one floating vessel and the prob is the possibility of the location of the upper structure at the marine base, contains the following stages: providing at least one floating vessel with a damping plate mounted on the floating vessel; installation of the topside on the floating vessel; transporting the upper structure to the installation site; the location of the damping plate at least partially below the water surface near the floating vessel and its passage from the floating vessel; positioning the upper structure at the marine base; removing the upper structure from floating vessels; removal of the floating vessel from the sea base.

A brief description of several views of the drawings

Fig.1 is a schematic top view of a variant of implementation of the stable system of catamaran, top-loaded structure when approaching marine floating base.

Fig.2 is a schematic rear view of the aft stable system the catamaran shown in Fig.1.

Fig.3 is a schematic perspective view of the stabilized system of the catamaran shown in Fig.1 without the upper structure.

Fig.4 is a schematic perspective view of the stabilized system of the catamaran shown in Fig.1, with the topsides loaded on the system catamaran.

Fig.5 is a schematic top view of a hundred is alizirovannoj system catamaran is depicted in Fig.1, with the upper structure located directly above the sea floating base.

Fig.6 is a schematic top view of the stabilized system of the catamaran shown in Fig.1, with the upper structure mounted on the sea floating base, and catamaran moved from sea floating Foundation.

Fig.7 is a schematic partial perspective view of another variant implementation of the stabilized system of a catamaran with a deployed damping plate.

Fig.8 is a schematic partial perspective view of the stabilized system of the catamaran of Fig.7 with the damping plate, placed in a vertical position.

Fig.9 is a schematic top view of the stabilized system of the catamaran shown in Fig.7, top-loaded structure when approaching marine floating base.

Fig.10 is a schematic rear view of the aft stable system the catamaran shown in Fig.9.

Fig.11 is a schematic top view of the stabilized system of the catamaran shown in Fig.9, with the upper structure located directly above the sea floating base.

Fig.12A is a schematic end view stable is istemi catamaran is depicted in Fig.9, with the expanded damping plate.

Fig.12B is a schematic end view of the stabilized system of the catamaran shown in Fig.9, with the expanded damping plate.

Fig.13 is a schematic top view of the stabilized system of the catamaran shown in Fig.9, with the upper structure mounted on the sea floating base, and catamaran moved from sea floating Foundation.

Fig.14 is a schematic partial perspective view of another variant implementation of the stabilized system of a catamaran with the main support structure.

Fig.15 is a schematic perspective view of main parts of the support structure shown in Fig.14.

Fig.16 is a schematic perspective view of the damping plate with additional support structure damping plate for connection with the main support structure shown in Fig.15.

Fig.17 is a schematic top view of the main supporting structure connected to the support structure of the damping plate Fig.15 and 16.

Fig.18 is a schematic perspective view of the main support structure and the support structure of the damping plate Fig.17, connected to the barge system catamaran.

the IG.19 is a schematic top view of a stable system of catamaran, is depicted in Fig.9, containing one or more external damping plates.

Fig.20 is a schematic end view of the stabilized system of the catamaran shown in Fig.19, deployed with external damping plates.

Fig.21 is a schematic top view of a stable system with one barge containing one or more damping plates.

Fig.22 is a schematic end view of the stabilized system depicted in Fig.21.

Fig.23 is a graph of the predicted action of the damping plate to the catamaran, based on the typical calculation period waves, when comparing stable system catamaran with unstabilized system catamaran.

Detailed description

The drawings described above, and the following description of specific devices and functions are not presented to limit the scope of the invention, the proposed physical or legal persons applying for the objects of industrial property or scope of the attached claims. More precisely, the drawings and description are for learning any expert in the art how to make and use the invention. Specialists in the art will take into account that not all features of an industrial variant Khujand is the implementation of the inventions described or illustrated for clarity and understanding. Specialists in the art will also recognize that the actual development of the industrial version of the implementation that combines aspects of the present inventions, will require numerous specific solutions implementation to achieve the ultimate goal of the developer of the industrial version of the implementation. Such specific solutions for implementation may include, but may not be limited to, coordination with the system, with business, with government and other restrictions, which may vary by the specific implementation, the position and frequency. Despite the fact that the effort might be complex and time consuming in an absolute sense, such efforts are, however, a common task for a person skilled in the art, having benefit of this disclosure. It should be clear that the invention disclosed and studied in this document is subject to many and various modifications and alternative forms. The use of the singular is not intended to limit the number of items. Moreover, the use of related terms, such as, but not limited to, "top", "bottom", "left", "right", "top", "bottom", "down", "up", "party" and similar, is used in the described and for clarity, specific reference to the drawings and is not intended to limit the scope of the invention or appended claims. Necessary elements noted alphabetical index ("a", "b", and so on) to denote the various similar aspects of the system or device. Normally, when referring to such elements can be used a number without the letters. Additionally, these designations do not restrict the number of items that can be used for this function.

The present invention increases the degree of resistance of the vertical rolling of the system of barges from wave motion, as the system is used to set the upper structure on the sea base. One or more damping plates can be connected to a position below the water surface with one or more barges to change the resonant period of the movement of the barge or barges relative to the period of the wave motion for better stabilization of the barge and resistance to vertical motion. In at least one embodiment, the damping plate may be connected between the barges or at the end or side of the barge. In at least another embodiment, each barge can contain a damping plate and the damping plate can undocking to connect with each other. Additionally, the damping plate can be rotated in the upward direction during transport of the upper structure to the installation site to reduce GI is replicastore resistance during transport and then be rotated in a submerged position during installation of the upper structure on the marine base. Additionally, one or more damping plates can be installed on the other side or end of one or more barges.

Fig.1 is a schematic top view of a variant of implementation of the stable system of catamaran, top-loaded structure when approaching marine floating base. Fig.2 is a schematic rear view of the aft stable system the catamaran shown in Fig.1. The figures described below in conjunction with each other.

Stable catamaran system 2 generally includes one or more vessels (usually two or more), such as barges 4, 6, which are used to set the upper structure 8 at the marine base 44, such as a Spar hull. Usually the upper structure 8 is supported above the upper part of the barges 4, 6, one or more of the supports 9. The term "barge" will be used broadly in this document to refer to any suitable vessel data in order to transport and support the upper structure during installation. Barge 4 includes the upper part 5, the lower portion 16, the inner side 12, the outer side 13, the end 17 on the aft end 21 on the bow. Similarly, the barge 6 includes a bottom portion 18, the inner side 14 facing to the other barge, the outer side 15, distal from the inner side, the end of the 19th feed the Asti and horses 23 bow. Usually barges long from bow to stern than it is wide, and for the purposes of this document include the longitudinal axis 20, around which the barge, in General, symmetric shape, although other shapes are available and can be used. The barges 4, 6 can each be connected with the damping plate 10. In at least one embodiment, the damping plate 10 is connected with the sides 12, 14 of the barges 4, 6, respectively. In other embodiments, implementation of the damping plate 10 may be connected with the lower part 16, 18 each barge. It is envisaged that the connection will be to tow the upper structure 8 to the installation site due to the complexity of installation of the damping plate 10 between the barges. However, some installations may include the connection of the damping plate 10 at the installation site. The damping plate 10 may be a solid plate or Assembly constructed from a variety of plates that form a box. Thus, the term "plate" is used broadly in this document to refer to the team structure, which functions as a plate or single plate. Plate size may depend on the distance between the barge and the desired resistance to vertical motion generated by the damping plate 10, based on model tests, analysis, and who is one, the testing operation. In General, the damping plate 10 will be located at or near the bottom of the barge or at some distance or distances below the surface of the water. For illustration only, the water level 22, shown in Fig.2, may include a wave with period TW" between vertices. For example, some of the estimated parameters typical for a predetermined period of TWwave is eight seconds. The change of the resonance system 2 catamaran using the damping plate 10 can significantly stabilize the relative movement of the catamaran system, despite changes in water level 22, as shown in Fig.21, as the wave passes by system of a catamaran.

If the damping plate 10 to connect with the barges 4, 6 to install, then usually the catamaran system 2 will be closer to the sea base 44 in the direction of the bow with the ends 21, 23 of the bow, facing to the sea base. This approach allows the system 2 catamaran to place the upper structure 8 at the top of the marine base 44 without colliding with the damping plate 10, which is connected between the barges 4, 6.

Fig.3 is a schematic perspective view of the stabilized system of the catamaran shown in Fig.1 without the upper structure. F is, 4 is a schematic perspective view of the stabilized system of catamaran, is depicted in Fig.1, with the topsides loaded on the system of the catamaran. The figures described below in conjunction with each other. The catamaran system 2 may include a damping plate 10 attached between the side 12 of the barge 4 and the side 14 of the barge 6. Alternatively, the damping plate 10 may be attached to the lower portions 16, 18 of the barges 4, 6, as shown in Fig.4. In some embodiments, the implementation of the damping plate 10 may be attached below the barges 4, 6, as, for example, in the position of the damping plate 10'. Additionally, in some embodiments, the implementation of the damping plate 10 may include many of the damping plates, as, for example, the Association of the damping plate 10 attached to the bottom of the barges 4, 6, United with additional damping plate 10', which is connected below the damping plate 10 and are separated by distance. Other construction and Assembly of the damping plate 10 may include many of the damping plates, multiple levels of damping plates of different sizes damping plates within the Assembly itself, and other options for ensuring that the damping plate 10 operates to change the resonant period of the catamaran system 2, i.e. the system response catamaran wave. Such a change in the resonant period can Oba is but be observed caused by the increased resistance in the contact surface area of the damping plate 10 with the amount of water above the damping plate, what hinders the movement of the damping plate, and the increased mass of the damping plate added to the barge.

Fig.5 is a schematic top view of the stabilized system of the catamaran shown in Fig.1, with the upper structure located directly above the sea floating base. After the system has 2 catamaran accommodates the upper structure above the sea base 44, shown in Fig.1, the marine base can be raised to engage the lower side of the upper structure. Supports 9 barges can be removed so that the upper structure 8 can be disconnected from the barges 4, 6. Installation at this critical point may be preferable to use the increased resistance of vertical motion from the damping plate 10, so that the barges 4, 6 do not feel heave as much as they would in other cases without damping plate.

Fig.6 is a schematic top view of the stabilized system of the catamaran shown in Fig.1, with the upper structure mounted on the sea floating base, and catamaran moved from the sea floating bases. After the upper structure 8 is attached to the underlying marine base, the catamaran system 2 is moved from the place of installation. Because of the damping plate 10 connects the I with the barges 4, 6, the direction becomes opposite to the direction of approaching to the sea base, as shown in Fig.1, i.e., the ends 17, 19 of the aft portion of the barges 4, 6 are moved back. It is envisaged that the damping plate 10 will remain attached to the barges 4, 6 in most installations. You usually want is a fast moving barges from under the upper structure 8 after superstructure is installed on a marine base to reduce the risk of damage during vertical rolling of the various devices. With the damping plate 10, still attached to the barges 4, 6, longitudinal movement of barges from the place of installation is longer along the longitudinal axis 20 in comparison with the lateral movement perpendicular to the longitudinal axis 20.

Fig.7 is a schematic partial perspective view of another variant implementation of the stabilized system of a catamaran with a deployed damping plate. This implementation provides a damping plate, which is attached to each barge and can connect to each other during installation, and, in addition, provides lateral movement of the barges from the place of installation. Lateral movement is generally considered a more rapid move from the marine base in comparison with the longitudinal movement described in Fig.6.

Can be used according to CNAE damping plate and various assemblies, supporting the damping plate. The following examples are only illustrative and not limiting device-specific, frameworks, mechanisms and positioning. It is known that modification of the hull barges are usually not encouraged, especially along the bottom of the barge and at least to some extent along the sides of the barge. Thus, an implementation option, shown at least in Fig.7 and related figures, includes a support structure for damping plate, which can be removed if necessary without damage to at least the bottom of the barge, and, in addition, provides a damping plate 10, which is attached to the barge below the water level. The main supporting structure 24 can connect with barge 4 usually along the upper part 5 and down the side 12. The main supporting structure 24 can connect with barge 4 locking system 26. The locking system 26 may catch one or more existing mounting points on the barge, which is usually used for various purposes.

In the embodiment depicted in Fig.7, the damping plate 10A can swivel to connect around the hinge 28 to the main support structure 24. The hinge 28 may be positioned on the main support structure 24 on a suitable height above the water level 22. The second supporting structure 30 which may also be connected to the main support structure 24 and pass along the side 13, distal from the side 12, and along the lower part 16, distal from the upper part 5, so that the ends of the second support structure 30 can be connected with the ends of the main support structure 24 or some other suitable position between the support structures to create a "belt" around the barge 4. Since the damping plate 10A can be rotated around the hinge 28, one or more devices can be used for raising and lowering the damping plate 10A. For example, and without limitation, the winch 32, containing the cable 34 may be connected with the damping plate 10A appropriate electrical/mechanical controls for actuation of the winch 32.

The damping plate 10 can be fixed in the unfolded position by one or more spacers 36. Spreader beam 36 in General should be rigid spacer beam, such as a pipe or other structural element, which can withstand the forces, as the barge 4 has a vertical motion in the system 2 catamaran. Spreader beam 36 may be connected to the main support structure 24 locking system 38 and may be connected with the damping plate 10A locking system 40. The locking system may include rods, cables, fasteners, tools and other locking devices and an integral part of the locking device, such as a hole at back the Oia, on supporting structures. As is shown in Fig.7, the system generally includes at least two such assemblies the main supporting structures, secondary support structures and other relevant structures depending on the length of the damping plate 10A.

Fig.8 is a schematic partial perspective view of the stabilized system of the catamaran of Fig.7 with the damping plate, placed in a vertical position. During transport of the damping plate may be placed in a vertical raised position and attached to the main support structure 24 or the intermediate structure between the damping plate and a support structure. The damping plate can be lifted in such vertical position by the winch 32, since the damping plate is rotated around the hinge 28. In the vertical position of the damping plate 10 creates less resistance in the water during transport barge to the place of installation.

Fig.9 is a schematic top view of the stabilized system of the catamaran shown in Fig.7, top-loaded structure when approaching marine floating base. Fig.10 is a schematic rear view of the aft stable system the catamaran shown in Fig.9. The figures described below in conjunction the Rog with each other. In the process, the catamaran system 2 may be close to the marine base 44 in the same way as described relative to Fig.1, with the difference being that the damping plate on the barge 4 and the damping plate on the barge 6 can stay in the designated position. Additionally, since the damping plate can be lifted to ensure the passage of the marine base, one or more damping plates can be placed at the ends 21, 23 of the nasal part of the barges 4, 6, which are used to get closer to the marine base 44. Despite the fact that in Fig.9 depicts four damping plates 10A-10D, it should be clear that more or less damping plates can connect to the system 2 catamaran. Damping plates 10A, 10B depicted in the retracted position at the rear or stern of the catamaran system 2 mainly near the ends 17, 19. This damping plates 10A, 10B may be omitted in the deployed position prior to installation, since the gap between the barges for system 2 catamaran marine base 44 is not damping plates 10A, 10B are in the retracted raised position. Spacer beams 36 may be connected between the support frame 24 and the damping plate 10A with the corresponding spacer beams connected at their respective design is the capabilities between barge 6 and the damping plate 10B. Additionally, the damping plates 10A, 10B can be connected together to provide additional stiffness of the joint surface of the damping plate formed of damping plates 10A, 10B.

Fig.11 is a schematic top view of the stabilized system of the catamaran shown in Fig.9, with the upper structure located directly above the sea floating base. Fig.12A is a schematic end view of the stabilized system of the catamaran shown in Fig.9, deployed damping plates. The figures described below in conjunction with each other. Usually after the system has 2 catamaran quite missed the top structure 8, the damping plates 10C, 10D, located at the ends 21, 23 of the nasal part of the barges 4, 6, respectively, may be omitted and placed in the deployed position by suitable spacers. Additionally, the damping plates 10C, 10D can be connected together to provide additional stiffness of the joint surface of the damping plate formed of damping plates 10C, 10D.

Fig.12B is a schematic end view of the stabilized system of the catamaran shown in Fig.9, deployed damping plates. Damping plates 10A, 10B for the barges 4, 6 can be deployed under one or bluephlame depending on the place of connection with the frame 24 and the length of the spreader beam 36. Additionally, a longer damping plates 10A, 10B (as shown) allow the damping plates converge at angles other than flat, to each other.

Fig.13 is a schematic top view of the stabilized system of the catamaran shown in Fig.9, with the upper structure mounted on the sea floating base, and catamaran moved from the sea floating bases. The upper structure 8 can be installed on a marine base 44, shown in Fig.9, and the barge can be detached from the upper structure 8. If the damping plates 10C, 10D are connected together, the connection can be removed. Similarly, if the damping plates 10A, 10B are joined together, such a connection can be removed. The barges 4, 6 can be moved laterally from the upper structure 8, namely in the perpendicular direction to the longitudinal axis 20. Such lateral movement may be faster longitudinal movement due to the relative distances between the length of the barges and the width of the barge. Damping plates 10A-10D can be deployed in the retracted or raised position as is reasonable in the circumstances.

Fig.14 is a schematic partial perspective view of another variant implementation of the stabilized system 2 catamaran with main pornoi design. Stable catamaran system 2 may include many of the major supporting structures, such as elevated main supporting structure 46. Supporting structure 46 can connect with barge 4, with the appropriate design connected with barge 6, many of the provisions. In General, the position will be located at each of the ends 17, 21 barges 4 and each of the ends 19, 23 barges 6. The height of the main structure 46 may vary depending on the design of the damping plate 10 with the availability of components for Assembly and disassembly of the damping plate to the main support structure.

Fig.15 is a schematic perspective view of main parts of the support structure shown in Fig.14. As estimated by the main supporting structure 46, the lower element 66 can form a coordinate grid, which can connect with barge 4, namely with the upper part 5. One or more vertical elements 68 can go up from the bottom element 66 at some convenient height. One of the top elements 70 may be connected with vertical elements 68 on the lower element 66. The connecting element 72 can be used to connect the frame formed by the elements 66, 68, 70, with other such frames that are posted with appropriate intervals to maintain the damping plate 10A. About the but or more locking devices, such as horizontal locking device 48A, 48V, can be formed on the upper element 70 or other items if necessary. For example, the locking device 48 may include an opening through which may be inserted rods, fasteners, tools and other devices. Similarly, one or more vertical locking devices 50 can be formed on the vertical plane, such as a vertical element 68, which is also used for connection of the damping plate 10A with the main support structure 46. Similar to the main support structure can be made and positioned in other locations on the barges 4, 6 for other damping plates.

Fig.16 is a schematic perspective view of the damping plate with additional support structure damping plate for connection with the main support structure shown in Fig.15. Fig.16 depicts the Assembly of the damping plate 10A with a support structure 52 of the damping plate. Supporting structure 52 of the damping plates are generally formed for connection with the main support structure 46, as described above in Fig.15. For example, the supporting structure 52 of the damping plate may include a protruding portion 53 extending from the main area of the support structure 52 of the damping plate, to the which includes one or more horizontal locking devices 54A, V damping plate. Horizontal locking device 54A, V damping plates are designed in size and spaced to provide a connection with a horizontal locking devices 48A, 48V formed on the main support structure 46. Similarly, the supporting structure 52 of the damping plate may include a vertical shut-off device 56 of the damping plate is also formed and matured in size to provide a connection with a vertical shut-off device 50 on the main support structure 46. Spacer beam 58 may be connected between the support structure 52 of the damping plate and the damping plate 10A to provide rigidity and stability of combining elements. For example, the spacer beam 58 may be connected with the upper section of the support structure 52 of the damping plate and the outer area of the damping plate 10A relative to the support structure 52 of the damping plate. Additionally, the supporting structure 52 of the damping plate may include a continuation of 55, which continues down and can be used to connect other parts of the damping plate 10A with a support structure 52 of the damping plate.

Fig.17 is a schematic top view of the main supporting structure connected to the reference design, is it the damping plate Fig.15 and 16. Fig.18 is a schematic perspective view of the main support structure and the support structure of the damping plate Fig.17, connected to the barge system catamaran. The figures described below in conjunction with each other. Supporting structure 52 of the damping plate with damping plate 10A may be connected to the main support structure 46, which in turn can connect with barge 4. The second supporting structure 60 may also be connected to the main support structure 46 and continue along the side 13, distal from the side 12, and along the lower part 16, distal from the upper part 5, so that the ends of the second support structure 30 can be connected with the ends of the main support structure 46 or some other suitable position between the support structures to create a "belt" around the barge 4. The protruding portion 53 can be inserted into the cavity of the upper element 70, so that the horizontal locking device of the main support element 46 can engage with the horizontal locking devices support device 52 of the damping plate, as, for example, a locking device 48V, geared with a shut-off device W. Similarly, the vertical locking device 56 can engage with the vertical shut-off device 50. The height of the damping plate 10A may be at some distance and below the water level 22, which may adhere to the bottom part 16 of the barge 4, or some other height above or below the lower part 16. Additionally, as shown in Fig.4, numerous damping podplatili can be placed one above the other at different elevations below the water surface, which together form a damping plate 10.

Fig.19 is a schematic top view of the stabilized system of the catamaran shown in Fig.9, containing one or more external damping plates. Fig.20 is a schematic end view of the stabilized system of the catamaran shown in Fig.19, deployed with external damping plates. The figures described below in conjunction with each other. Additionally, some of the options for implementation may include one or more damping plates in other locations on the barges in addition to or instead of the above-described internal damping plates between the barges. For example, at least some advantage may be obtained from one or more damping plates on the outer side 13 of the barge 4 and/or outer side 15 of the barge 6. One or more external damping plates may be located along the entire length of the barge in different parts of the barge or can be divided into different segments along the length of the barge, which m which may be desirable for specific operating conditions. The damping plate can be fixed deployment, such as shown and described above relative to Fig.15-18. Alternatively, they can be rotatable and expandable damping plates, as shown in Fig.7-13. Assumed other variants of implementation. Usually external damping plate such as damping plate 10E-10G on the barge 4 and/or 10H-10J on the barge 6, can further modify the resonant period of the system 2 catamaran and response to vertical motion. Additionally, external damping plate is not limited to the problems of gaps internal damping plates on the inner sides 12, 14, as the barges 4, 6 are arranged on one straight line with the marine base 44, pictured above. Thus, external damping plate 10E-10J can be deployed with less interference during installation procedures. After installing any of the turning outer damping plates may return in the retracted position, namely a vertical position, when returning barges on the production site or for other use. Similarly, one or more damping plates can be connected with one or more ends of the barge, as shown in Fig.21 and 22 below.

Fig.21 is a schematic top view Stabi is siromoney system with one barge, containing one or more damping plates. Fig.22 is a schematic end view of the stabilized system depicted in Fig.21. The figures described below in conjunction with each other. The above concept of the one or more damping plates may also be applied to the same system 2' barges. For example, one barge 74 can be used to set the upper structure 8 on the marine base (not illustrated). In contrast, system 2 catamaran, one system 2' barges in General does not cover the two sides of the marine base, but instead usually sets an upper structure 2 between two adjacent parts of the sea base. Similar problems arise with different vertical movement of the barge 74, compared to the steady position of the marine base. Thus, one or more damping plates can be deployed on a barge for functioning in a similar way as described above for two or more barges.

For example, the damping plate 10 can be installed on the end 76 aft at least partially below the water level 22. The damping plate 10 can communicate with one or more types of support structures 75, for example, a similar supporting structure 24, 30, 46, 52, described above, can be rotated around a supporting structure or still of sacrale the change in position and may have other suitable features, as described with the catamaran system 2 and the joint system damping plates in this document.

Additionally, additional damping plate 10' can be connected with a system of 2' below the damping plate 10 similar to the system described in Fig.4. One or more additional damping plates 10K can connect with the end 77 of the bow of the barge 74 in a similar way. Additionally, one or more damping plates 10F, 10I can connect to one or more sides 78, 79 barge 74. Damping plates on the sides, which can also be connected with one or more types of support structures, can be rotated around the support structures or still to be fixed in position and having other suitable characteristics, as described by catamaran system 2 and the joint system damping plates in this document.

Fig.23 is a graph of the predicted action of the damping plate to the catamaran, based on typical current wave period for comparison of the stabilized system of a catamaran with unstabilized system catamaran. Curve 62 represents the vertical motion of catamaran without actions to stabilize one or more damping plates described above. For typical design criteria waseskun the aqueous period Ts waves, vertical pitching system of the catamaran may have almost one-to-one with the maximum displacement. Theoretical results based on the simulations show that moving a little higher by 1.1 (10% higher) compared to the motion of the waves.

Exceptional contrast, as revealed by the inventors, is that the damping plate can substantially reduce the vertical rocking of the catamaran system, as shown in curve 64, with damping plates. The simulation clearly shows that the vertical pitching is about 15% compared with 110% when calculated womancanada period waves. In fact, the damping plate increases the period of the catamaran and the resonance of this period, so that the moving system of the catamaran campfires in the current period and, therefore, does not move in direct correlation with the wave passing by system of a catamaran.

Other and additional embodiments of using one or more aspects of the inventions described above can be developed without Department from the invention of a physical or legal entity applying for the object of industrial property. Additionally, various methods and embodiments of the system of barges can be included in Association with each other for the Denmark variants of the disclosed methods and embodiments. The description of the individual elements may include multiple elements, and Vice versa. Links to at least one detail, followed by a reference to the item, may include one or more parts. Also, various aspects of embodiments may be used in combination with each other to achieve understanding of the disclosure. Unless the context requires otherwise, the word "include" or variations such as "contains" or "containing", it should be understood that the means enabling at least a given element or step or group of elements or steps, or their equivalents, nevklyuchenie more numerical values or any other element or step or group of elements or steps, or their equivalents. The device or system can be used in a number of directions and oriented. The terms "connected", "connecting", "connection", and similar terms are used broadly in this document and can include any method or device for securing, binding, gluing, bonding, attachment, connection, insert it, education on it or in it, interaction or Association, for example, mechanically, magnetically, electrically, chemically, directly or indirectly with intermediate elements, one or more parts of the elements together, and mo is ut optionally include, but without limitation, all the education one functional element to another as a whole. The connection can be in any direction, including rotation.

The order of the steps may occur in many sequences, unless specifically limited otherwise. The different steps described in this document can be combined with other steps, inserted between the defined stages and/or be divided into multiple stages. Similarly, the elements described functionally and can be embodied as separate components or can be combined into components having multiple functions.

The invention is described in the context of preferred and other embodiments, and are not described each variant embodiment of the invention. Obvious modifications and changes to the described embodiments are available to specialists in this field of technology. Disclosed and undisclosed embodiments of are not intended to limit or reduce the scope or applicability of the invention, the proposed physical or legal entity filing the application for industrial property subject matter, but rather, in accordance with the patent laws, natural or legal person applying for the object of industrial property, is configured to fully protect all such modify the promotion and improvement, which relate to the scope or range of equivalent of the following claims.

1. The catamaran system for installation of the upper structure on the marine base, comprising: at least two floating barges, each of which includes top, bottom and sides, and a damping plate connected to rotate with at least one floating barge and configured to rotate between a retracted raised position and a deployed position, in position at least partially below the water level near the barge, and the damping plate is made with the possibility of changing the characteristics of the vertical rolling of the at least two floating barges at sea wave having a predetermined period, and the modified feature heave is compared with the characteristic of the vertical rolling of the at least two floating barges without damping plate.

2. System of a catamaran under item 1, in which the damping plate is made with the possibility of changing the resonant period of at least two floating barges under the influence of the wave period.

3. System of a catamaran under item 1, in which the damping plate is positioned toward the aft of at least two floating barges and absent on the bow of the at least two floating barges is otnositelno direction of approach to the marine base.

4. System of a catamaran on p. 1, additionally containing a support structure connected to at least one of the floating barge and a damping plate, pivotally connected to a support structure.

5. System of a catamaran under item 1, in which each of the at least two floating barges contains a damping plate, pivotally connected to the inner side of the fore end part of each floating barge, and each of the at least two floating barges contains a damping plate, pivotally connected with the inner side at the aft end of each floating barges.

6. System of a catamaran under item 1, in which at least two floating barges, each have a damping plate connected to rotate with the inner side of each barge in direction to each other.

7. System of a catamaran under item 1, in which the second damping plate is connected below the first damping plate and spaced from the first damping plate.

8. System of a catamaran under item 1, in which each floating barge contains a damping plate on the inner side of each floating barges.

9. System of a catamaran on p. 8, in which the damping plate on each floating barge attached to it, when the damping plate is in a deployed position.

10. System of a catamaran on p. 8, the cat is Roy damping plate on each floating barge is raised to a vertical position, when it is not deployed.

11. System of a catamaran under item 1, in which at least one damping plate is connected to the outer side of at least one of the floating barges.

12. The method of stabilization systems catamaran containing at least two floating barges and made with the possibility of the location of the upper structure at the marine base that contains the following stages:
providing at least two floating barges with damping plate mounted to rotate on at least one of the floating barges;
installation of the topside on floating barges;
transportation of the upper structure to the installation site with at least one generouse plate, decorated in raised position;
turn the damping plate in the deployed position, so that the damping plate is located below the surface of the water near at least one of the floating barges and passes from at least one of the floating barges;
the positioning of the upper structure on the sea;
detach the upper structure from floating barges; and
removal of floating barges from the sea base.

13. The method according to p. 12, in which each of the at least two floating barges contains a damping plate, connected with it, and additionally includes the stage of connection with the possibility of usaed is in the damping plate on the first floating barge with a damping plate on the second floating barge.

14. The method according to p. 13, additionally containing the rotation of the damping plate in the deployed position to the connection of the damping plate on the first floating barge with a damping plate on the second floating barge.

15. The method according to p. 13, additionally containing disconnecting the connection of the damping plate on the first floating barge with a damping plate on the second floating barge, after removing the topsides from the floating barges.

16. The method according to p. 15, in which the removal of floating barges from the sea base contains moving floating barges sideways from the marine base after disconnecting the connection of the damping plate on the first floating barge with a damping plate on the second floating barge.

17. The method according to p. 12, in which the securing arrangement of the damping plate below the water surface contains a compound with the ability to detach the damping plate in the deployed position below the water surface near the floating barges.

18. The method according to p. 12, in which at least two floating barges, each have a damping plate attached can be rotated to the inner side of each barge in direction to each other, and additionally containing:
maintaining the damping plate in the retracted raised position before the sea base will be damping PL is the Steen between barges, before turning the damping plate in the deployed position.

19. The method according to p. 12, in which the removal of floating barges from the sea base contains moving floating barges in the longitudinal direction from the marine base after removing the topsides from the floating barges.

20. The method according to p. 19, in which the damping plate is connected to at least two of the floating barges with the upper structures connected to at least two floating barges, and in which the removal of floating barges from the sea base contains moving floating barges in the longitudinal direction from the marine base with a damping plate, which is connected with at least two floating barges.



 

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1 dwg

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