Device to receive and to process fluids with floating structure equipped with one-point mooring anchor system

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to underwater extraction of fluids or gases. Proposed device consists of floating structure, for example, ship equipped with one-point mooring anchor system. Said system is composed of turret articulated at vertical well extending through floating structure hull anchored at sea bottom to accommodate pipelines to feed fluid to floating structure equipment. Mooring anchor system comprises device to guide turret into said well and axial and radial bearing assemblies.

EFFECT: higher reliability.

23 cl, 10 dwg

 

The invention relates to a device for receiving and processing liquids, such as oil, consisting of a floating object, such as a vessel, equipped with single-point turning of the play on a dead anchor formed of turrets, pinned at the neck, in the form of a vertical well through the hull of the floating object, is dead fixed on the seabed and through which the pipelines feeding the liquid to the equipment of the floating object, the system dead anchor includes a device that guides the sentry gun in the neck and having axial and radial bearing units.

In devices of this type axial support site has a large diameter, since it is located near or on the cut of the neckline, and has the form of one or more combined axis, the rings around the pipe. The neck may be of large diameter, when it is required to pass through the turret of a large number of pipelines. However, the manufacture of nodes supporting a fairly large diameter is challenging and at the design stage, attention should be given basic structural deformation, subsidence or oval deformation. Therefore, the manufacturing support and load-bearing structures is a difficult task, and the preparation of the raceways, in particular to obtain the desired plane, and their installation have R the d difficulties.

The purpose of this invention is a solution to this problem.

To achieve this goal, proposed invention the device is characterized by the fact that the turret includes an upper portion which has a rotary device for the reception and admission process piping, and support of a diameter less than the diameter of the neck located between the tip top of the turret (2) and the structure connected to the housing of the floating object (apparatus), the upper bearing turret located above the rotary device for receiving and transferring liquids.

In accordance with one feature of the invention, the device differs in that it has a radial bearing located in the neck between the outer cylindrical peripheral surface of the turret and the wall of the tube at a level at least above the minimum water level in order to allow the inspection or other service, and located as low as possible for the most accurate transfer of the horizontal strain occurring between the fixed anchor and moving underwater pipelines.

In accordance with another feature of the invention, the device is characterized in that the upper disc-shaped bearing reduced size is located between the support element tip turrets and the bearing design is United with the apparatus, rack which may be partially tapered.

Another feature of the invention differs in that the upper bearing consists of two support rings, replacement of the main ring and temporary ring, designed to ensure the functioning of the device, if the main ring will be damaged.

Another feature of the invention differs in that the device supports two are located at radially different locations, the main bearing is located outside to replace.

Another feature of the invention differs in that the two pillars, the main and temporary, are located along the axis of the turret, the main bearing is located at the highest point to allow replacement.

Another feature of the invention differs in that the upper bearing is a radial support in the form of a sliding hinge that allows rotation and transverse to the tilting movement of the turret relative to its vertical axis.

Another feature of the invention differs in that the at least one bearing made in the form of a solid ring, with lifting lugs to remove this support with the service, if you need to replace the other ring.

Another feature of the invention differs in that at least one of the upper supports has a ring element with a tapered roller bearing, forming on ewuu support and the ring element with cylindrical rollers, forming a radial bearing, the two rings are located on top of the annular structures based on elastic damping strip or swivel on the supporting structure of the device.

Another feature of the invention differs in that at least one of the upper supports has a ring element with conical rollers on the tapered groove, based on the load-bearing structure of the apparatus through damping elastic strip.

Another feature of the invention differs in that at least one of the upper supports are formed by rings located along the axis of the neck, and formed elements moving along the conical surfaces whose axes are at right angles to the planes of intersection of the plane of the axis of the neck above the turret.

Another feature of the invention differs in that the ring formed by the elements of the roller supports.

Another feature of the invention differs in that the rings are made of elastically deformable wheels, such as tires or rollers with deformable running surface or Pneumatics.

Another feature of the invention differs in that the device has an annular conical platforms, each of which consists of an element of the platform attached to the turret, and element platform attached to the bearing design, the operation of the apparatus, on this platform the feed pipes stacked rings before connecting them to the equipment, and the upper bearing is located above the node feed lines, consisting of platforms and pipelines.

Another feature of the invention is characterized by the fact that the incoming feed tubes connected to the head part of the turret to the connecting nodes steering reservoir fluid and thus each node is connected to the supply pipe leading to the device.

Another feature of the invention differs in that the radial bearing has a rotary elements, such as elastic deformable wheel whose axis parallel to the axis of the well, the elements are rollers with wheels or track rollers or equivalent devices, mounted on a spring or support devices or, if necessary, through a suitable deformable structure.

Another feature of the invention differs in that the rotary elements in the form of wheels mounted on supports fixed to the inner surface of the well, and when moving in contact with the outer surface of the turret and thus the turret is the second running surface, which is coaxial with the outer surface of the turret, and the wheels are in contact with the inner surface of this second running surface.

Others who Gaya feature of the invention differs what is the structure supporting at least one upper support connected to the decks of the apparatus in three main points and adapted to untie the design from deformations and torsions of the body of the device.

Another feature of the invention differs in that the supporting structure is attached to or mounted at the middle line near the middle of the overall height of the apparatus, where the above-mentioned deformation and torsion of course smaller.

The invention will be more clearly and other characteristics, details and advantages will be apparent from the following descriptions with reference to the drawings, the data is only as examples to illustrate some solutions of this invention and where:

Fig. 1 gives a schematic representation of a floating object, as, for example, an apparatus with a turning point of the play on a dead anchor through the turret, fixed dead on the seabed;

- Figa shows a partial section of the device of this invention in a vertical plane perpendicular to the longitudinal axis of the apparatus;

- FIGU gives an enlarged section view of the detail indicated by IIB on figa;

- Figs gives the top view in the direction of the arrow IIC on figa;

- Fig.2D provides an enlarged incision near the element 11 forming the lower radial bearing;

- Five and 2F, odinakovyx figv and show two other possible solutions relying on head turret according to this invention;

- Fig.2G gives the top view of the platform with coiled pipes of one of the feed lines on figa indicated by the arrow IIG on figa;

- Fign gives a side view of two modules of the track roller support ring in the direction of the arrow N on file.

- Fig identical with Fig. 2E and 2F, and shows another possible solution according to this invention supports at the head of the turret;

- Figa identical with Fig. 2A and gives another solution device according to this invention;

- FIGU provides an enlarged view of a part shown on figa the arrow V;

- Figure 4 is the same in Fig. 2A and gives another possible solution according to this invention;

- Figure 5 is identical with Fig. 2A and gives another possible solution according to this invention;

- Figa the same in Fig. 2A and gives another possible solution according to this invention;

- FIGU provides an enlarged view of a part indicated by the arrow VIB in Fig. 6A.

- Figa, 7B and 8A and 8B give perspective images and a top view of two solutions support device according to this invention;

- Figures 9 and 10 with the same figa and provide various options for the possible execution of the device according to this invention.

The invention relates to a device shown in figure 1. This device includes a floating apparatus 1 for the production, storage and unloading of liquids, such as gas or oil, pointed to by the second apparatus is moored using a rotating single-point system dead anchor to the turret 2, which is pivoted in the hole as well 3 and vertically passes freely through the floating apparatus. The turret mounted on the seabed 4 cables, chains or other suitable means 5 and the other end attached to the base 6, for example, turrets. Figure 1 shows two feed pipe 7 among many other designed for optimal drilling an oil or gas field. The lower ends of these pipes not shown, while the upper ends of these pipes pass through the turret 2 and serves fluid through the rotary receiving device 9 to the various equipment schematically shown in reference 8.

The sentry 2 is placed in the well 3 guide device comprising an axial support device and the radial support device whose forms are an essential part of the invention.

Fig. 2A through 2G show the first possible solution, which feature is the presence of the axial bearing 10. Support is located at the top of the node 12 that supports and transmission pipelines 7 equipment 8 device. The node 12 is composed of a large number of tapered circular platform 14 located on the axis x-x of the turret, and each consists of an element of the platform 15, which is mounted coaxially on the cylindrical surface 17 of the turret 2, and the element of the platform 16 rests on a support structure in the Orme turret 18, located on the upper deck 20 of the apparatus. Two elements 15 and 16 each platform 14 is tilted downward from the cylindrical surface 16 of the turret. Each circular conical platform 14 is designed to hold the flexible pipe 7. This pipeline is stored in a collapsed in the ring condition on the platform, and the turret can make a few turns, for example five axis. Fig shows the location of the tube 7 on the circular platform 14, formed by two elements of the platform 15 and 16, attached to the turret 2 and the supporting leg 18. On fig.2G and in accordance with the example on figa pipe arrives on the platform in t, after it rises along the axis inside the turret and extends from the platform radially in t', as an example, bending in the vertical plane.

As is clear from Fig. 2A, the turret 3, which passes over the deck 20 at considerable length to allow mounting of the conical platforms 14, ends with a head 23, which is located on the upper platform 25 is mounted on the support structure 18 of the apparatus, through the support 10. The device 12 that supports flexible pipes should have a relatively large outer diameter dictated by the minimum of the optimal radius of curvature below which the pipe should not be bent.

In accordance with the invention, the support 10 is located above design and 12, supports flexible pipe 7, which is wound in a ring on the conical platforms 14. She may have a significantly smaller diameter defined by the requirements of the pipeline than conical platforms 14. It may have a smaller diameter than the diameter of the well 3, defined by a large number of underwater pipelines. However, taking into account the installation at high altitude and subject to radial forces holding the floating device right at the bottom of the turret, the support 10 may have only a reduced diameter, but you want to ensure that the conditions under which it does not accept the load when the deviation of the turret from the vertical position due to the flexibility of the turret and the lower support. These conditions are easily doable, if, for example, to apply a swinging support for the removal of the tipping loads.

Another important decision of this invention is the placement of the lower support large diameter hard enough, and the upper support can be made significantly smaller diameter, so that they formed a hinge, upper axial bearing, therefore, operates as a stop perceiving the load and transmitting axial forces without bending moment, which is very important.

In accordance with the invention, the innovative placement of the upper support 10 on the height and making it the smallest possible diameter allows placement of a significant number of nourish is their pipes, which could not be placed in preexisting schemes axial bearings, installed under or around the node sending the liquid, or on the deck 20 of the apparatus around the well and therefore having a larger diameter. In addition, placement of the upper support of small diameter above the point of articulation with the design of the device allows to solve the problem of deformation, especially the oval deformation around the well, by vertical movement and reducing the diameter of the bearing. In particular, the design of the holding support at the height can be designed tricycle, which is hinged at the base to perceive three-point vertical load on a floating object without creating undue stress in the supports as shown in Fig. 7 through 11.

From the technical solutions according to this invention, it follows that it is necessary to ensure the reliability of steady work supports guaranteed from 25 to 30 years of continuous operation. This principle of reliability, it follows that the manufacturers guide sentries must have extensive experience of designing and manufacturing such supports, to ensure this. Not only the developer of the entire device requiring high-strength, manufacturing and installation, but also the future operators of the equipment must include expenses for expensive maintenance of equipment in operating expense is for regular maintenance and repairs, may require high qualification.

Regarding the use of supports of reduced diameter, which became possible thanks to this invention, have been resolved or greatly reduced not only these problems, but it was possible, moreover, to double the axial support function by the location of the two poles of different radius or placement two vertical supports with the same characteristics.

In addition, it became possible to replace worn-out or defective pivot bearing of the other pivot bearing without removing the pipes and without stopping the normal drilling operation. This is possible because there is no topological crossing of pipelines with the trajectory of motion when removing the replaceable upper support. At the same time reducing the diameter allowed us to provide a damping cushion for the upper support without creating too much friction during rotation comparable to the torque anchor lines.

However, creating a double top support puts forward new requirements, especially in the design of two swing bearings, in which even one bearing must have the ability to perceive the entire upper radial load and the total axial load. In the invention of theoretical pivot centers of the two poles coincide with one another or they are very close. Therefore, this invention provides the ability DM is ivania supports and makes the outer or upper bearing replacement. With this purpose, the second bearing, the inner or lower, does not perceive the vertical load during normal operation of the system. However, you can provide the conditions under which copies the points on the main support, to avoid the risk of mechanical jamming, but in practice this has no bearing load and, therefore, has no wear. The first bearing or main bearing is placed outside or on the top, therefore, perceives the axial load and, if necessary, a small upper radial load, continuously during normal operation of the node. However, when the limit is reached, the period of service, or project, or damage may require replacement. During this temporarily replace the inner bearing takes all axial load and the accompanying radial load.

Associated with the pivot bearing 10 is set lower radial bearing 11, placing it as low as possible to reduce the bending moments, but it is advisable to install it above the minimum water level, to allow for easy inspection or replacement.

Fig. with 2B through 2F show several variants of the upper pivot bearing 10 of reduced diameter, independent and therefore considerably less than the diameter of the whole system of transmission fluid, piping and swivel connections.

Fig. 2B shows the performance of the top the second support 10, which consists of a replaceable bearing swivel type 27 in the form of a radial outer swivel ring and replaceable radial inner support 28 of the hinged type, if it is made solid ring or a preferably replaceable parts, if it consists of segments. It should be noted that the supports 27 and 28 are designed for taking axial loads, but cannot resist the bending moment with respect to the vertical position of the turret due to the relative design flexibility and lower bearings.

The supports 27 and 28 constitute the reference node, which is located on the support surface in the form of a domed cap. The centers of curvature of each element are superimposed on one another and connected in t on the axis of the well above the turret.

For placement of the support device 10, the tip 23 of the turret (Fig. 2B) has an upper disk 30, which enables the transfer of axial load from the turrets on the main bearing 27 through the connecting part 32 in the form of a ring which is connected with the disc 30 through the prestressed bolts 34 with external nuts 33 and blind nuts 35, attached to the disk. The connecting ring 32 has a radial strengthening ribs 36 and the protective rim 37, by means of which the ring rests on the support 27.

The disk 30 transmits the thrust load to radial internal replaceable bearing 28 through adjusting elementy annular shape and a lot of lifting devices 40 or other devices, providing similar functions for replacement or maintenance, inserted through the annular part 42. The adjusting elements and the lifting device are based on the horizontal surface of the annular part 42 whose lower radial and axial surfaces lie on a support 28. As shown in Fig. 2C, the lifting device 40 is distributed evenly around the axis of the turret. Between the two lifting devices 40 made two round holes 44, which allows you to attach hydraulics or remove lifting device.

Main bearing 27 from the side of the supporting structure attached to the apparatus and placed on the coaxial radial adjustment details 46. This item is attached to the upper surface of the platform 25 of the tower holding the device. This platform has a cylindrical hole 49 through which passes a cylindrical part 50 of the top turret, which is the free end of the upper disk 30.

From the above it follows that during maintenance or replacement of elements on the outer leg 27 of the lifting device 40 large lifting force (for example, with a large hydraulic pressure) are driven to lift the disc-shaped structure 30 of the turret. This upward movement relieves the load from the main pivot bearing 27 by passing efforts on a temporary support 28, which is p is to work all the time replace the main bearings. The transfer of load is guaranteed when coincident turning points and hinges during the whole operation. Therefore, it becomes possible to unmount the node formed by the bolts 34 and the connecting part 32, and the lower disk design through lowering of the lifting device 40 until it falls on the adjusting disk 38, which then allows you to remove the bolts, the connecting part 32 and then the main external support 27.

Reverse operation allows you to install a new pivot bearing, to replace the primary connecting ring 32 and bolts 34, to raise the disk 30 to the bolts with pre-stress and then replace the disk 30, which will be based on the new main bearing 27 through the connecting part 32 and not on a temporary support 28 through an intermediate adjustment item 38.

It should be noted that this solution, when the hinge bearing 10 is located at a height of reducing the diameter leads to a decrease of the moment of friction force, so there is less resistance to the rotation of the node, which leads to better design, if there is a need to move a large number of flexible pipes on the platform. For example, it is possible to use for the main bearing hinge 27 even under heavy axial and radial loads, especially with deep deposits or deposits that require the x significant number of flexible pipes. You may consider using as a temporary support 28 of the sliding hinge that is very reliable. Sliding joint can be performed, for example, of bronze with good friction performance, and lubricant is applied to stainless steel. The inner bearing 28 can be made, for example, in the form of a segment of the hinged supports for element replacement, but the main external bearing 27 is always desirable one piece design, for example one-piece sliding pivot or solid closed ring of rollers to sliding or rolling elements could work in a protected and lubricated environment, to extend reliable operation.

Fig. 2E shows a sliding bearing consisting of elements of rotation 52, 53, i.e. with catmovie supports. Because they are collapsible, these modules are located on the ring and can be replaced.

These modules are well known and are used to move heavy loads. As shown in fige and 2H, a module with a large number of items of rotation, for example, cylindrical rollers 54 or tapered rollers, are connected with their ends with chain, so they can move around the support plate.

When the module is coming to an end support plate, the latter roller is moving traction power circuit to the front of the plate, where he turns around its axis and rises again midorikawa carpet and stove. The use of these modules with rollers has the advantage that independent elements occupy a small volume and are light weight in relation to the load they move, they are easy to install and easy to maintain. They allow the load is well distributed over many small rollers.

According to this invention, the axial module 52 and the radial module 53 is designed in the form of rings between the disc 30 turrets and enhanced support ring 57, which is based on forged slip ring 58, is placed on the platform 25 of the tower. Between the support ring 57 and washer, ring 58 posted by item 59 inclined type, made in the form of a continuous ring or continuous blocks. The element 60, for example, made or sliding joint in the direction of the tilt, or as the enhanced detail of the elastomer. The module 53 is inserted between the outer cylindrical surface 17 of the turret and a cylindrical surface facing the ring 57. The modules 52 are tapered rollers, based on treadmills, and form the axial bearing and the modules 53 also have videos, but here cylindrical rollers form a radial bearing. The axis of the conical rollers modules 52 intersect at t located on the axis of the turret and well.

Axial module 52 together with the radial module 53 form a swivel bearing, which is mounted in the strong membranous and rotates relative to the supports 25 and 58 by means of Assembly elements 59, preferably of the elastic layer. In the bearings can be used in modules whose base plate is bent at the tapered part, and which, rolling cone elements. These rollers can be installed on the ends of axles and synchronized circuit, the external circuit has a larger step than the internal circuit. The so formed module is mounted on a hinged elastic layer or mounted on a solid ring, through the elastic strip of the same type on the platform 25.

Fig.2F shows the upper support 10, which consists of modules with a tapered rollers 60 on the conical treadmill 61 support ring 62, which is fixed on the side surface of the turret under the disk 30. The tapered rollers 60 are mounted so that their axes intersect the axis x-x of the well or turrets in the well 65. Modules 60 are based on the tilt lining ring 63 fixed to the platform 25 through the element 64 elastic type.

Fig.2D refers to figa and shows the radial bearing 11 is inserted between the turret 2 and the wall of the well 3, located as low as possible in the well to reduce the bending moments, but above the minimum water level for easy inspection and repair. As shown in Fig. 2D, this bearing is formed by a ring of elastically deformable rollers 66, whose axis parallel to the axis of the well. These rollers can be wheels with elastic Defoe is minuimum or pneumatic rim. Rollers are mounted on axes 67, attached to the floating device, limited by the radius of the well 3. Rollers are mounted in pairs. Rollers of each pair are located on each side of the axis 67, the axis of the paired rollers are able to rotate perpendicular to the axis of the rollers about the axis 68. Their axes straightened. Rollers are in rolling contact with the outer cylindrical surface 17 of the turret.

To get a good job rollers 66 are made of the outer circular guide 69 for rollers 66, it is mounted on the turret and coaxial with it and has supporting elements 70, therefore, are capable of forming inner guide rollers 66.

When the turret is moved along the radius from the initial position along the axis of the well, compressed rollers only on the sidewall of the well, while the diametrically opposite rollers usadata from the peripheral surface forming the guide turrets. As a result, these rollers do not participate in radial transmission load. To overcome this external radial guide 69. Since it is mounted on the turret, it causes compression is usually not running radially arranged rollers.

Rollers can be mounted in any convenient manner without changing the principle of the invention, where the load does not pass through the hub (not shown, see French patent application No. 0956599 and 0956618).

<> In the drawings 3A and 3B shows another solution for the application of the invention, based on, for example, on automobile wheels. However, the proposed variant competes with the decision at which the wheels, rollers, rollers, floating support, modules with rectangular rollers or the like mounted in a rigid, optimally deformed or floating structure, as described in the French patent application No. 0956599 and 0956618, not yet published at the time of filing of the present application and which belongs to the applicant.

The device shown in figa also contains a conical platform 14 on which is wound a flexible pipelines and upper bearing is of reduced diameter relative to the diameter of the well and the diameter required for the passage of the flexible and normal pipes in and around the turret. However, unlike shown in figa, the support 10 includes a certain number of rings 70, each of which consists of a set of elastically deformable and horizontally spaced wheels whose axes are common and rely on the platform support structure 72. Each platform 72 is tilted down in the direction of the axis of the well. The angle of the three platforms 72 and a three ring 70 is such that a line perpendicular to the platforms and intersect at a common point 73, which is located on the axis x-x above the top of the turret.

Head round and for each ring 70 has a platform 74, whose bottom surface opposite the platform 70 has a corresponding slope and forms a treadmill for tapered roller rinks ring 70.

In Fig. 3A and 3B of the upper bearing 10 has a relatively steep angle and are formed by several modular rings along the axis of the well, each ring consists of an Assembly of modules with dual rollers on axes 76, same with figb.

Fig.2J shows another embodiment of the upper support 10. In this case, the bearing has three rows of rollers 80, 81, 82, which pines with the axis of the turret and spaced in the direction of these axes. The rollers of the rings 80 and 82 are of the horizontal axis for axial and perevorachivaya efforts, and the ring 82 has a roller whose axis vertical to radial forces. Each ring is inserted between the two treadmills, one of which is fixed to the turret, and the other to the ring 84 which rests on a base ring 85 of the platform 25 of the support structure through the elastic strip 87, able to withstand light cutting deformation, or through another hinge design that tracks the slope of the turret due to defects installation at high altitude and possible movements of the lower support, if it is elastic, and is invariant under deformations of the structures of the floating node under the influence of external disturbances such as currents, waves and wind.

Figure 4 shows another possible implementation of the device over which the pipes 7 are not stored on the tapered platform in the bays, and climb inside the turret in the cylindrical part of Golovnina 88 on which is mounted a lot of the swivel connection nodes 89, forming a reservoir of fluid, each of which is connected to the output pipe 90 connected to the equipment. Figure 4 only shows eight rotary joints of conventional type, i.e. with circular toroidal chamber, half of which forms a stationary part connected to the turret and the other half forms the swivel part. As shown, these connecting elements can be of different diameters, depending on the flow rate and type of liquids that they convey. The upper support 10 is an example described in fige. It is designed so that the Assembly of tubes and their supports are held under the support 10, whose diameter can be arbitrarily small, even if the tip turret will close the hole, as in the example with a sliding hinge, shown in Fig. 2B.

Figure 5 shows one variant of the invention, in which, as in the case of figure 4, the flexible tube 7 are sent to a reference table 95, mounted inside the turret, and then each connected to a rigid pressure pipe 97, which through the valve 98 may take the number of feed lines 97, and that has only one output discharge pipe 99. These valves provide a reduction in the pipes. Each pipe 99 is connected to the ring 100. Ring 100 is coaxial with the axis of the turret. In the annular element 100 has a Central sleeve 102, which is on axis to the upper support 10 and ends above the supports of the distribution ring 104, the feed liquid to outgoing connections 106, which go to the storage nodes and the processing apparatus. The upper end of the sleeve 102 attached to the structure forming the roof 108 fastened to the supporting structure 18 of the apparatus, the height of three feet, as shown in Fig. 7 through 11.

In this embodiment, the upper support 10 stores the reduced diameter, although outgoing pipelines 106 are held above the support, this has become possible through the use of valves 98, which reduces the number of pipelines. And bearing again located above a large number of pipes in the turret and above the supporting devices and better protected from deforming forces corps. Figa and 6B show a variant in which the upper part of the upper deck of the unit 19 corresponds to the execution figa and the upper support shown in fige. The peculiarity of this performance lies in the fact that the diameter of the lower support 11 is also reduced type, but of a slightly larger diameter than the top bearing. This bearing 11 is installed between the surface of the well 3 and the outer surface 17 of the turret 2. The diameter of the well and turrets reduced accordingly.

The turret reduced diameter goes down to the level between the upper and lower lines of the precipitation vessel. At the base of the turret reduced diameter set design in the form of a circular caisson 110, which passes radially outward and connected with the part 112 of the well. Under the caisson 110 and the auxiliary knee turret has a support plate 114 for flexible pipe 7 leading from the field, and support plate for anchor cables 5. The base plate 114, the supporting tube 7, is located on the lower level of water. Between the base plate and the wall of the well is the deflector 118 that is designed to suppress the surge of the water in the well.

Flexible pipe 7 passes through the plate 114 and each is connected through Golovnin flexible tube 120 to a rigid pressure pipe 122. These pipelines have such a form that they pass through the axis of the well and turrets, and then climb to the top of the turret through an area of reduced diameter. Such a device in the area of reduced diameter is made possible because the pipes 122 are hard and are located inside the turret by means of auxiliary devices, not shown in the drawing. Therefore, only the lower part of the well and part of the turret ublis the keel receive flexible tubing 7 and must be of sufficiently large diameter, to avoid any risk of contact between the pipes. They should be able to move one relative to another without the risk of collision and receiving damage.

This decision by this invention is characterized by a lower support 11 of reduced diameter in combination with the upper leg 10, also of reduced diameter, which gives the advantage that together with the upper support it gives the decrease in the resistance moment of rotation of the node, so it is possible to use only the moving support, and not such, as shown in the node 124 in Fig. 6V. In addition, there is a possibility to have it very low, which reduces the removal of arrows and reduce forces acting on the support. Bearing 124 is placed between the support structure 126 turret and ring 128 on the outer side of 127 rests on the wall of the well through the elastic support 130.

It should be noted that this construction can be used with manifold swivel connections for common liquids, and it is arranged so that between the rotary connection and underwater pipelines are the previously mentioned device, a circulation pipeline device, collectors and leaching system.

It follows from this that can be used diverse solutions on the support 10. Bearing can be fixed the aqueous type and of reduced diameter, and even less than the diameter of the winding coiled tubing or conventional rotary joints, or diameter of the well. Support can be a set of sliding segments, for example, in the form of pillows with a spherical bearing. It can be a sliding hinge in a spherical bearing, or formed of roller supports, for example of ring rollers with three treadmills, mounted on reinforced or elastic cushions. Bearing can be made of modular rings, formed by rollers or it may be formed of the successive plates, bearing on the axes of the elastically deformable device, such as a wheel.

In relation to the lower support 11, the advantage is that the vertically sliding radial bearing or purely radial may be formed by rollers, as shown on the drawings in the examples, and may have a sliding cushion, fitted with hinged supports, for example, is made of reinforced elastomer ring modules with rollers and again with reinforced elastic blocks. Pillows can be formed by a ring roller modules installed on the floating ring or mounted on the device with springs or latches. The lower bearing 11 may be of rollers mounted radially or on the cart, in which four wheels are mounted in such a way as to form a mobile node. Base 11 may be of the images is on wheels, arranged radially, and to optimize the work there can be installed rails, increasing the radial efficiency and reducing variance.

Figa, 7B and 8A and 8B show two preferred solutions support structure 18 according to this invention.

Figa and 7B show the load-bearing structure in the form of a tripod, bearing a node 140. This tripod has an upper horizontal platform 141, which in the center has a hole 142, allowing the passage of the tip turret and whose edges maintain the upper support 10 and the three pillars 144 slightly curved downwards and connect the platform with deck 145 floating storage and production site, or the upper deck or the intermediate deck, located on the median line of the body on the zero axis, where the deformation is minimal, as shown in Fig. 9 and 10.

Design 140 tripod with its legs connected with deck 145 and provides enough space for the passage of the rotary feed systems liquid having consistently located platform and wound flexible pipe, as shown in figa and Fig. 9 through 11, or multi-pass rotary coupling system with circular chambers made, as shown in Fig. 5 and 11.

A tripod structure 140 has sufficient vertical rigidity, due to the fact that the supporting part of the fitted line is the result and reduced flights of arrows in the upper structure and the bearings have the necessary angle. Tripod design is open, i.e. it does not close the cylindrical volume between the supports and therefore allows you to have natural ventilation equipment located below.

Tripod design 140, adapted to the solution with the upper axial and radial bearings located above the device transmission fluid has the advantage of passing the vertical and horizontal loads at three points on the deck of the apparatus. Possible damage to the deck excluded, for example, when using reinforcing vertical connecting metallic sheet that transmits the load through the shear deformation.

Under these conditions, the curve of the deck due to deformation of the casing of the apparatus creates the least possible effort on tripod supports. Taking into account the possible non-circular deformation at the edges of the openings 146, made for the passage of the turret, near which there are three pillars 144, and especially if they are from the centre line elevation of the supports relative to the amplitude of the radial deformation and rigidity of the deck/bearing and bearing/horizontal structural connections are drawn with regard to the reduction of loads in the design, for example, through constructive solutions or installation of elastic elements in T. 147

Resistance to transverse forces in this design can be amplified, if necessary, adding the supports (not shown) or structures, located on the sides of the three bearings.

Figa and 8B show another embodiment of the support structure 18 of the upper support according to this invention. These drawings of these designs are given in the form of shestipaloi design 148.

The upper part in the form of a platform 149 with a hole 150 in the center for the passage of the tip turret connected with six legs 152, which are more curved than in the case shown in figa and 7B, and are distributed in pairs on the upper platform 150, and on the deck 154, connecting with the body floating device. Upper platform 149, as figa and 7B, has a triangular shape. Each corner is connected with two nearby reference ends. These pillars are obliquely to the deck in the opposite direction and rely on the deck, each near the base end of the support connected with the adjacent corner of the platform.

Quoted point six poles in pairs on the upper and lower parts is displaced in a horizontal projection, giving special attention to the symmetry of the structure.

So at the top, thanks to the tripod design, shown in figa and 7B, the number of connections of the supports is equal to the number of connections at the bottom. In the lower part shestipaloi design in the area of the connection with the deck of the device there are three zones of contact, six poles, two by two.

As a result, the vertical movement of the deck due to the curvature of the hull apparatus the ATA is transmitted to the bending moments in the upper platform, while the upper platform can withstand them because of its swivel function without any undue stress in the support.

Taking into account non-circular deformation work tricycle design will also be shared as two nearby support will be very close to the radial trajectory. Here the rigidity of the bearing/deck and bearing/horizontal connecting structure adapted to relieve stresses in structures, for example, using the design or installation of the intermediate elastic elements acting as pseudoternary.

Estipona structure, compared tricycle structure, has a high rigidity against the action of horizontal forces, potentially transmitted by cap turrets as possible bending triangular design with tilt down seems impossible, but when the horizontal forces acting perpendicular to it will require a correction arising from the rigidity of the other two opposite triangles.

Figures 9 and 10 show two other variants of the invention that includes a support structure 18 a tripod shape, for example, corresponding figa, 7V, or shestipaloi shape corresponding figa, 8B.

In the device shown in Fig.9, the supports 144 or 152 of the supporting structure is connected with the middle line 155 body floating in the trojstva to reduce deformations, especially non-circular deformation, three or six grouped in pairs and supports reducing, thus, the bending load on the bearings.

As shown above platforms 141 or 149 tricycle or shestipaloi design set Assembly axial and radial upper bearings 10 with a hinge function. These options correspond to the device shown in Fig. 2A to node 2, the receiving and supporting incoming line 7 with a conical platforms 12, 16 for storing coiled pipes, but their support 144 or 152 pass through corresponding openings 157 in the upper deck to connect with deck 155 located for these purposes near the Central axis of the metallic casing of vertical and horizontal tiles.

The version shown in Fig. 10 differs from the version in figure 9 so that the device 12 is equipped with a platform storage reeled pipelines and is located in the upper part of the well of large diameter 159 thus, compared to Fig.9 platform 141 or 149 tricycle design 140 or shestipaloi design 148 lie exactly on the lower level to the upper deck.

At the bottom of the turret below the water level, are again building block 161 pillows sliding type, forming a segment of a radial bearing. Shown solution is preferable, because the transmission of radial forces near his summe is zi anchor plate 162 turret reduces bending moments and the upper radial forces, while the hinge radial bearing provides freedom from bending effort turrets due to possible deformation of the vessel and placing the base of the support structure in close proximity to the midline of the body and reduces the load from the non-circular deformation at the points of connection of the supports, made for example in the form of a tricycle design (bearing 144) or shestipaloi design (bearing 152).

1. A device for receiving and processing of liquid or gaseous media, such as gas or oil, including floating node, such as an apparatus with a turning point of the play on a dead anchor having a turret, passing articulated through the hole in the form of a well, running vertically through the hull of the floating node is dead fixed on the seabed and passed through the piping to the equipment of the floating node, the system setting on a dead anchor consists of a device for guiding a sentry gun in the well, consisting of nodes of the radial bearing and vertical supports, characterized in that the turret (2) is the upper part of the that includes a turning device (12, 89, 100) for receiving and supporting incoming pipelines (7, 90, 99), and one leg (10) of smaller diameter than the diameter of the well (3) in position between the cap upper part of the turret (2) and a support structure (18)connected to the floating body is on site, the upper bearing turrets placed above the rotary device, receiving streams.

2. The device according to claim 1, characterized in that the bearing (10) is located between the disc-shaped part (30) of the head part (23) and the platform (25) of the support structure (18) of the floating node.

3. The device according to claim 1, characterized in that it has a radial bearing (11), located in the well (3) between the outer cylindrical part (17) of the turret and the wall of the well.

4. The device according to claim 1, characterized in that the axial bearing (10) has two support rings (27, 28), the main replaceable bearing (27) and auxiliary support (28)designed to ensure the operation of the device when the main bearing (27) has failed.

5. The device according to claim 4, characterized in that the two legs (27, 28) spaced radially removable bearing (27) is located outside.

6. The device according to claim 4, characterized in that the two bearing, main (27) and secondary (28), are located along the axis of the turret, main bearing (27) is located at the top.

7. The device according to claim 1, characterized in that the upper bearing (10) is made in the form of a sliding hinge, allowing the lateral bending moment of the turret with respect to its vertical axis.

8. The device according to claim 1, characterized in that the upper bearing (10) is a skid base, allowing lateral bending moments of the turret with respect to its vertical axis through the device is VA shear strain.

9. The device according to claim 8, characterized in that the support is a solid ring with lugs for lifting when servicing or replacement.

10. The device according to claim 1, characterized in that the upper support (10) has a ring modules (52) with conical rollers on the disk or ring modules (53) with cylindrical rollers supported on the cylindrical treadmill and forming a radial bearing, the two rings are based on the hinged ring (57), supported by elastic cushions (59) on the supporting structure (25, 18) of the device.

11. The device according to claim 1, characterized in that the upper support (10) includes a ring of modules with a tapered conical rollers on the treadmill, which is located on the support structure (25, 18) of the device through the elastic elements (64).

12. The device according to claim 1, characterized in that the upper bearing (10) is composed of a set of rings located along the axis of the well, and is composed of the elements moving along a conical surface whose axis is perpendicular to the surfaces intersecting at a point on the axis of the well above the turret.

13. The device according to item 12, wherein the ring formed by modules with rollers.

14. The device according to item 12, wherein the ring formed by sets of elastic deformable wheels, such as tires or rollers with elastic deforming or pneumatic working the mi surfaces.

15. The device according to claim 1, characterized in that the receiving node and the support incoming pipelines (7) includes a circular platform (14), each of which has an element (15)attached to the turret, and the element (16)mounted on the support structure (18) of the apparatus, which are mainly located in the wound as input lines, and on it placed above the upper support platforms and higher outgoing pressure pipelines.

16. The device according to claim 1, characterized in that the node supports and incoming pipelines, has a node of the collector of the rotary joints, which included piping is connected and from which the outgoing pressure pipelines are sent to the hardware device, and bearing (10) of reduced diameter is located above the rotary connecting nodes and outgoing pressure pipelines.

17. The device according to claim 1, characterized in that the node supports and incoming pipelines, has a system of valves to reduce the number of pipelines and the rotary connecting device having coaxial parts, one fixed to the turret and accepts outgoing from the system valves, standpipe, which is less than the number of incoming pipe, and the other fastened to the supporting structure of the apparatus and outgoing attached to the equipment pipe, and the upper TNA is and (10) of reduced diameter placed around the turning axis of the connecting node, mounted on the turret below attach outgoing pressure pipelines.

18. The device according to claim 2, characterized in that the radial bearing (11) has elements of rotation, for example elastic deformable rollers whose axes are parallel to the axis of the shaft, rollers or similar.

19. The device according to p, characterized in that the elements of the rotation in the form of rollers (66) are located on the axes (67)mounted on the inner surface of the well (3), and are in contact with the outer surface (17) of the turret (2), comprising a second treadmill (69) for rollers, which are coaxial with the outer surface of the turret.

20. The device according to claim 2, characterized in that the diameter of the well is reduced in the part where he accepts incoming pipelines (7), and the fact that part of the turret, which is a well with a reduced diameter, itself has a reduced diameter, and the fact that the radial bearing (11) has a reduced diameter and is located at the bottom between the parts with a reduced diameter of the well and turrets.

21. The device according to claim 1, characterized in that the portion of the well above the reception area of the tubes (7), has a reduced diameter, and the fact that part of the turret, which is inserted into the well of reduced diameter, has a reduced diameter, respectively, and the fact that the bearing (11) is designed as a sliding support, and not articulated.

22. The device according to claim 1, featuring the be fact, that the supporting structure has a vertical unloading on three pillars or six poles connected in pairs to the strain distribution of the deck of the apparatus to which this design is attached.

23. The device according to item 22, wherein the supporting structure passes through the upper deck of the aircraft without fixing it, and fixed on the median value of the height of the apparatus, where the deformation is minimal.



 

Same patents:

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to deep water drilling oil and gas platform designed for operation at arctic shelf. Semi-submersible catamaran-type drilling platform is arranged at two pontoons, platform hull being supported by stabiliser columns and tensioned vertical mooring, with computer-aided dynamic positioning with the help of underwater propulsors. Surface deck superstructures are composed of drilling, processing, power production and functional modules. Integrated control and safety systems are equipped with production equipment conditions monitoring means and emergency elimination means to actuate by remote means at well fluid flowing the device of static electricity charges elimination at drilling platform.

EFFECT: higher survivability of drilling platform at well fluid flowing.

5 cl

FIELD: transport.

SUBSTANCE: method of drilling rig movement by means of transport hovership system includes movement over shallow waters and pulling floating drilling rig on air-cushion on slightly sloping shore. For movement over shallow waters delta anchors installed on ground using transport hovership equipment. To bring floating drilling rig on slightly sloping shore a bundle of three screw anchors is used which are screwed into ground by drilling rig located on deck of transport hovership. These anchors are joined with platform with roller block by adjustable rods. Pull winches and roller blocks are used on floating drilling rig to exit to shore. Roller block on anchor bundle platform and in floating drilling rig together with pull winch form tackle which permits to use winches with lower propulsive force for floating drilling rig pulling on anchors.

EFFECT: lower energy consumption during floating drilling rig movement over shallow waters and its pulling out to solid base with insignificant slope.

3 dwg

FIELD: transport.

SUBSTANCE: proposed device for equalisation of anchor ropes or chains tension contains two or more crossheads frame adjacent ends of which are connected by anchor ropes or chains with ends of corresponding double-armed lever, and the central part of the latter and the second ends of two utmost crossheads, as well as casings of crosshead upper blocks are connected by anchor ropes or chains with floating ice-proof platform. The casings of crosshead lower blocks are connected by anchor ropes or chains with anchors of this platform located at sea bed. All blocks of each crosshead are made movable and seized by equalising rope or chain the ends of which are fixed on crosshead frame ends which crosshead is provided with guides for block casings, the latter are placed in these guides with possibility to provide absence of their contact with other parts of crosshead metal structure during this device operation.

EFFECT: higher carrying capacity of floating ice-proof platform anchoring system, increase in its reliability, lower weight of device for equalisation of anchor ropes or chains tension.

3 cl, 6 dwg

FIELD: power industry.

SUBSTANCE: inventions relate to the field of electric energy supply of stationary underwater objects under conditions of freezing seas. To provide electric energy to consumers, floating power unit and receiving-transmitting device are transported to the area of electric energy consumption. Then, it is connected via the power electric cable with consumers and with power unit. Power unit is installed in the surface condition by means of anchor lines with deadline anchors with the possibility of submersion to the depth inaccessible to ices by filling the tanks of main ballast and singling of anchor lines with small positive buoyancy, which provides an opportunity of emergency upfloating, and before installing it on the bottom, supports are lowered and negative buoyancy is given to floating power unit, taking water ballast into special tank. Power unit is serviced by means of icebreaking supply vessel and submersible vehicles based on it. Complex includes icebreaking supply vessel with underwater vehicles, underwater buoy catcher, receiving-transmitting device, as well as floating power unit with high-current connector, tanks of main ballast, special tank, anchor lines with dead anchors, supports to be installed on the bottom, and splash boards for landing of submersible vehicles.

EFFECT: high efficiency, reliability of method and operational characteristics of complex are achieved.

4 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to shipbuilding and concerns protection of marine ice-resistant platform hulls against external ice impact. Marine ice-resistant platform hull has reinforced, predominantly vertical, ice sheathing with stiffening set and is provided with rigid elements with triangle cross-section installed on sheathing surface and placed on its surface with creation of multiturn spiral which has generatrix inclination angle to horizon of 10÷70 degrees and spiral pitch not exceeding 1/3 of maximum ice thickness in the area of platform operation. In this system, rigid elements are installed so that horizontal plane determining upper end of spiral is above platform design waterline, and horizontal plane determining lower end of spiral is under platform design waterline where distance in height between planes of upper and lower ends of spiral is not less than 1/2 of ice thickness in the area of platform operation.

EFFECT: lower ice loads on platform hull.

1 dwg

FIELD: transport.

SUBSTANCE: marine ice-resistant process platform comprises overwater part with horizontal areas and process equipment installed on them, underwater part made as water displacing hull, anchor holding system allowing platform to turn relative to vertical axis, ballast tanks located in water displacing hull. The ballast tanks are located throughout the length of water displacing hull. Overwater part is made as fore and after towers where the upper part of towers in ice waterline region is made as ice-breaking cone facing by its narrow part down, and the lower part - for instance in the form of cone facing by its narrow part up. Distance from sea level during operation in ice conditions to upper part of water displacing hull is greater than maximum possible draught of ice formations. Axis of anchor holding system is located in the region of fore tower.

EFFECT: lowering load on hull and anchor holding system.

2 dwg

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

Floating platform // 2518779

FIELD: transport.

SUBSTANCE: 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.

EFFECT: higher reliability, enhanced operational functionality due to increased displacement and bearing capacity of platform.

3 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to sea gravity ice-breaking platform to be used in shallow water. Said platform comprises bearing plate composed of hollow body dividing in compartments filled with ballast and top displacement hull with processing and ship equipment built in bearing base deck closed elevation to uncouple them. Inner boundary of said deck elevation is equidistance in plan with floating structure outlines with difference in sizes defined by the relationship: δ=δïã, where δis aforesaid difference, δï is maximum sum of construction deviation of sizes ob said body and hull from rated values, δãis guaranteed clearance required for alignment of top structure with platform bearing base outline.

EFFECT: higher operating efficiency in ice.

2 cl, 2 dwg

FIELD: transport.

SUBSTANCE: 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.

EFFECT: higher safety of turret, anchor and riser lines in ice.

2 dwg

FIELD: transport.

SUBSTANCE: proposed device for equalisation of anchor ropes or chains tension contains two or more crossheads frame adjacent ends of which are connected by anchor ropes or chains with ends of corresponding double-armed lever, and the central part of the latter and the second ends of two utmost crossheads, as well as casings of crosshead upper blocks are connected by anchor ropes or chains with floating ice-proof platform. The casings of crosshead lower blocks are connected by anchor ropes or chains with anchors of this platform located at sea bed. All blocks of each crosshead are made movable and seized by equalising rope or chain the ends of which are fixed on crosshead frame ends which crosshead is provided with guides for block casings, the latter are placed in these guides with possibility to provide absence of their contact with other parts of crosshead metal structure during this device operation.

EFFECT: higher carrying capacity of floating ice-proof platform anchoring system, increase in its reliability, lower weight of device for equalisation of anchor ropes or chains tension.

3 cl, 6 dwg

FIELD: transport.

SUBSTANCE: invention relates to shipbuilding and concerns vessels for hydrocarbon production. Vessel contains hull with tower, cavity in the tower and mooring buoy removably fixed in the cavity. Note that the buoy contains floating body and is load-carrying element for a number of marine risers extending to underwater well for hydrocarbon production and for a number of anchor lines connected with sea bed. When the buoy is attached to the cavity the buoy is fixed to lifting element connected with hoist on vessel to lift the buoy. Each anchor line and/or marine riser is connected by its top end with locking member, and the locking member is attached to pulling member. During lifting, each anchor line and/or marine riser is movable relative to floating body along the length of anchor lines and/or marine risers. After floating body has been connected with cavity the locking member engages with contact member on floating body thus supporting anchor line and/or marine riser hanging from floating body. Pulling member can be attached to mooring buoy by means of resilient device working in compression.

EFFECT: better operational performance of mooring system.

10 cl, 6 dwg

Anchor system // 2517634

FIELD: transport.

SUBSTANCE: invention relates to anchor system for semi-submerged open-water structure with the hull that has top and bottom waterlines (2, 1). Note here that said anchor system has mooring line (4) extending from locked point at sea bottom (8) to attachment device of said structure. Note also that a part of said mooring line nearby said attachment device is composed by the chain. Said attachment device comprises hawse-hole (10) and chain retainer (22) located under said bottom waterline. Chain retainer (22) is located in dry chamber inside outer case. Note here that said chain retainer is tightly connected with hawse-hole on one side and, on the other side, with hawse-hole tune (9). Said tube extends inside the case at a distance from said bottom waterline. Hawse-hole extends from chain retainer towards outer case and is tightly connected therewith.

EFFECT: fast and easy detachment of anchored structure.

10 cl, 17 dwg

FIELD: transport.

SUBSTANCE: invention relates to device for detachment of moored floating offshore structures from buoy mooring when they are exposed to acts of nature. Device for mooring detachment for floating offshore structure and buoy mooring contains at least one high-pressure water jet propeller, supplemental low-profile contact surfaces on floating offshore structure and buoy mooring, detachable mechanical restraints. High-pressure water jet propeller is located on floating offshore structure and is facing buoy mooring to direct water between offshore structure and buoy mooring during detachment operation. Detachable mechanical restraints engages floating offshore structure and buoy mooring together during normal drilling and production operations.

EFFECT: quick detachment and quick increase of distance between mooring and floating offshore structure.

7 cl, 6 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to Arctic floating facilities. Invention covers the mooring system for floating facility, for example, drilling rig. Floating facility has platform for drilling, extraction or other works in seat and support to provide ballast and stability under water level in sea. Mooring system comprises multiple anchors arranged at sea bottom, radially around the support and multiple mooring links. First end of every mooring link is connected with the support while second end of every mooring link is connected with appropriate anchor. Every mooring link additionally comprises at least two, in fact, stiff links hinged to allow relative displacement of adjacent links in one plane. Invention covers also the method of development of mooring system and method of its displacement.

EFFECT: higher reliability of mooring system.

24 cl, 17 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship-raising, particularly, to equipment for ship anchoring. Proposed method proceeds from exploiting of mooring anchor mooring force, ship load mechanism load-carrying links being secured to said anchors. Damaged submarine hull with stocked devices is used as said mooring anchors. Synthetic cables of accumulation reels of the ship left and right boards are laid on the drums of automatic transit winches and passed via board hawse-holes in automatic clamp ears. Guide cable of automatic tracking winch is passed through clamp body to be lowered overboard. Guide cable bitter end is run over damaged submarine stock roller to drive said winch to cable tension tracking mode. Said clamp is downed on guide cable to automatic coupling with stock rod to switch on the transit winch to automatic retention mode above damaged submarine at preset tension force. Proposed device comprises mooring anchors, load-carrying links and load mechanisms. Damaged submarine hull with stocked devices is used as said mooring anchors to be coupled with stocked device, automatic tracking winches with guide cables, automatic transit winches and guide reels with synthetic anchor cables.

EFFECT: simplified rescue procedure, fast anchoring.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention proposes a disconnection method of a buoy from a mooring turret in a system including a ship containing a mooring turret installed so that it can be rotated on the ship, and a buoy carrying uprising pipelines, which can be attached to the mooring turret and disconnected from it. The system also includes moorings attaching the buoy to mooring points at sea bottom and loading the buoy with mooring forces. Before the buoy is disconnected from the mooring turret, moorings are manipulated so that at least at disconnection the mooring forces are decreased or even disappear. A retaining and releasing device includes a housing with at least two clamps for the mooring, which are located at some distance from each other and made so that an excessive part of the mooring can be located between them. At least one clamp can be installed to the mooring lowering position.

EFFECT: improving reliable and safe performance of a disconnection operation of a buoy from a mooring turret.

11 cl, 2 dwg

FIELD: mining.

SUBSTANCE: chains with anchors are moved by means of tow cars - anchor bringing machines till their installation point. First, anchor chains are moved under ice with their further lifting onto decks of tow cars - anchor bringing machines by means of towing winches using guiding ropes that are attached to end shackles of anchor chains and moved with remotely piloted underwater vehicles of a torpedo-like shape of a captive type to tow cars - anchor bringing machines. After end clamps of anchor chains are lifted onto decks of tow cars - anchor bringing machines, anchors are attached to them.

EFFECT: safe and effective positioning of a drilling ship under ice conditions.

5 dwg

FIELD: transport.

SUBSTANCE: invention relates to connection assy for mooring chains of, for example, FPSO ship (extraction, store and shipment ship) or floating sea structure. Proposed assy 4 comprises chain connector 5 with first pin 14 and means 25 to coupled mooring chain 3 with connector 5. Proposed assy additionally includes channel-forming appliance 6 attached to floating structure 1 and having bottom and top ends, mooring chain lock 11 made at said top end. Channel-forming appliance 6 extends in floating structure 1 from its bottom to higher level that can be located above sea surface. Channel-forming appliance bottom end has the seat 18 for bearing of first pivot 14 of chain link. Connector 5 can displace in channel-forming appliance. Note here that there are means 27, 28 to displace chain connector between the first position whereat first pin 14 is located at channel-forming bearing seat 18 and second position specified by said appliance whereat chain connector may be accessed.

EFFECT: simplified connection to mooring chain.

10 cl, 8 dwg

FIELD: transport.

SUBSTANCE: invention relates to oil production in arctic waters, particularly, to ship for use therein. Proposed ship is available in two versions. In compliance with first version, ship can drill via drill water separation string extending from sea bottom well to turret arranged aboard the ship. Said drill water separation string can be detached from the ship located under its main line. At turret separation from the ship its bottom part submerges along water separation column to occupy equilibrium position whereat its surrounds at least partially a part of drill water separation column. In compliance with second version, proposed ship for drilling oil and/or gas production wells can be connected with at least one water separation column connected with turret coupled with ship of drill water separation column extending through the turret connected with the ship. Two lengthwise boards extend between ship fore and aft with ice belt made at, at least 50% of their length, the angle a of 45-80 degrees between ship hull and horizontal line.

EFFECT: lower load at anchoring and maneuvering devices, improved conditions of operation in arctic waters.

5 cl, 18 dwg

FIELD: transport.

SUBSTANCE: floating helicopter take-off, landing and mooring complex has pontoon hull with top deck and helideck with railing and stairway. Top deck accommodates superstructure with helideck arranged on its top. Anchoring means represent at least three mooring anchors, primarily, stationary mooring bitts mounted on water area bottom and arranged along mooring equipment. Links are pivoted to aforesaid mooring bitts to couple with floating complex hull, the pivots having at least two degrees of freedom. Links of the extreme bitts and center bitts are pivoted together, the pivot having degree of freedom in horizontal plane to form triangular frame. Frame links and third independent link are articulated with mooring bitts via pivots allowing two degrees of freedom in horizontal and vertical planes around the axis parallel to complex hull. Hull upper deck accommodates devices intended for docking low and average deadweight ships, appliances for towing mooring complex and control station for helicopter take-off and landing ships mooring.

EFFECT: higher survivability.

13 cl, 4 dwg

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