阅读说明：本技术 动态立管首端鹅颈型连接器垂直铺设翻转架及铺设方法 (Vertical laying roll-over stand and laying method for dynamic riser head end gooseneck type connector ) 是由 周健伟 李国毅 段立志 罗海雄 崔宁 齐金龙 石锦坤 梁光强 张云鹏 于 2021-10-25 设计创作，主要内容包括：本发明涉及一种动态立管首端鹅颈型连接器垂直铺设翻转架及铺设方法,翻转架包括底座、转动安装在底座的翻转组件；翻转组件包括翻转板,翻转板的两相对边上分别设有转动轴,转动轴分别与底座转动配合；鹅颈型连接器包括供动态立管首端连接的软管接口、以及用于与翻转板的一侧连接的喇叭口,软管接口与喇叭口之间连接有弯曲的弯管,使得鹅颈型连接器翻转到底座时,软管接口朝上。借用翻转架可以调整鹅颈型连接器角度及固定存放,用吊机吊将鹅颈型连接器起吊后,将连接器导向喇叭口与翻转架结构上的翻转板机构对接完成翻身、整体固定作业。(The invention relates to a vertical laying roll-over stand and a laying method for a gooseneck connector at the head end of a dynamic riser, wherein the roll-over stand comprises a base and a roll-over component rotatably arranged on the base; the overturning assembly comprises an overturning plate, two opposite sides of the overturning plate are respectively provided with a rotating shaft, and the rotating shafts are respectively in rotating fit with the base; the gooseneck connector comprises a hose connector for connecting the head end of the dynamic vertical pipe and a bell mouth for being connected with one side of the turnover plate, and a bent pipe is connected between the hose connector and the bell mouth, so that when the gooseneck connector is turned to the base, the hose connector faces upwards. The angle of the gooseneck-shaped connector can be adjusted by the aid of the turning frame and the gooseneck-shaped connector can be fixedly stored, after the gooseneck-shaped connector is lifted by a crane, the connector is guided to the bell mouth and is butted with a turning plate mechanism on the turning frame structure, and turning and integral fixing operations are completed.)

1. A dynamic riser head end gooseneck type connector vertical laying roll-over stand is characterized by comprising a base (11) and a roll-over component (12) rotatably mounted on the base (11);

the turnover assembly (12) comprises a turnover plate (121), two opposite sides of the turnover plate (121) are respectively provided with a rotating shaft, and the rotating shafts are respectively in rotating fit with the base (11);

gooseneck type connector (2) including supply hose interface (21) that dynamic riser head end (4) are connected and be used for with horn mouth (22) that one side of returning face plate (121) is connected, hose interface (21) with be connected with crooked return bend (23) between horn mouth (22), make gooseneck type connector (2) overturn to during base (11), hose interface (21) up.

2. Dynamic riser head end gooseneck connector vertical lay down roll stand according to claim 1, characterized in that the top of the roll stand (1) with the maximum height behind the gooseneck connector (2) is lower than the tensioner (5).

3. The dynamic riser head end gooseneck connector vertical lay down tippler according to claim 1, wherein the base (11) is not lower than the protruding structure (31) of the moon pool (a) central area.

4. The dynamic riser head end gooseneck connector vertical lay down roll stand of claim 1, wherein the base (11) is designed with two support seats (111) for the roll-over plate (121) to be rotatably mounted.

5. The dynamic riser head end gooseneck connector vertical lay down tippler of claim 4, wherein the support base (111) comprises support guideposts (112) and a reinforced sprag truss (113), the support guideposts (112) and the reinforced sprag truss (113) being triangular in shape with the base (11).

6. The vertical laying roll stand of a dynamic riser head end gooseneck connector according to claim 4 or 5, characterized in that the edge of the roll-over plate (121) is provided with a raised plane limiting table (122), and the supporting seat (111) is provided with a guide groove (115) for the plane limiting table (122) to be clamped into, so that the guide groove (115) defines the rotation position of the plane limiting table (122) relative to the supporting seat (111).

7. Dynamic riser head end gooseneck connector vertical lay down tippler according to claim 4 or 5, characterized in that the base (11) is provided with a support platform (116) for supporting the inflection point of the gooseneck connector (2).

8. The dynamic riser head end gooseneck connector vertical lay down roll stand of any one of claims 1 to 5, wherein four lifting lugs (114) are distributed around the base (11).

9. The vertical laying roll-over stand of a dynamic riser head end gooseneck connector according to any one of claims 1 to 5, characterized in that locking buckles (123) are arranged around the roll-over plate (121) to fix the bellmouth (22) of the connector (2) and the side of the roll-over plate (121).

10. A method for vertically laying a dynamic riser head end Gooseneck type connector using the roll-over stand of any one of claims 1 to 9, comprising the following steps;

s1, hoisting the roll-over stand (1) with the gooseneck-shaped connector (2) to the inner side area of the moon pool cover (3) for storage, and ensuring that the bell mouth (22) of the connector (2) faces to the port of the ship;

s2, winding a winch steel wire rope on a deck through a guide wheel of the vertical laying system, connecting a dragging net sleeve of the head end (4) of the vertical pipe, and assisting the head end (4) of the vertical pipe to initialize through the vertical laying system;

s3, lowering the head end (4) of the vertical pipe on the roller to a deck, connecting a winch steel wire rope rigging to a dragging net sleeve, hoisting the head end (4) of the vertical pipe by a vertical laying system service crane, completing the operation of the head end (4) of the vertical pipe through a guide wheel by matching with a winch, and releasing the vertical pipe (42);

s4, the winch pulls the dragging head (41) of the head end (4) of the vertical pipe to the moon pool (A) direction, when the dragging head (41) of the vertical pipe (42) is lowered to the moon pool cover (3), the tensioner (5) is closed, the dragging head (41) and the rigging of the head end (4) of the vertical pipe are dismantled, and the first section of bending limiter (6) is installed to the head end (4) of the vertical pipe;

s5, starting a tensioner (5), recovering the head end (4) of the riser, wherein the height of the connector of the head end (4) of the riser is higher than the position of the hose connector (21) at the top of the gooseneck connector (2) of the roll-over stand (1), so that the hose connector (21) of the gooseneck connector (2) and the connector of the head end (4) of the riser are connected on the same vertical line;

s6, lowering the riser (42) by using the tensioner (5), observing the relative position of the gooseneck connector (2) interface and the riser (42) interface, and adjusting the height of the hose interface (21) at the head end (4) of the riser through the tensioner (5) to finish pairing and connection;

s7, limiting the gooseneck connector (2) left and right by using a chain block, limiting the gooseneck connector (2) front and back by using a rigging, and completing the split dismantling of the turnover plate (121) and the limiting support column on the turnover frame (1) by using a beam crane of a vertical laying system;

s8, hoisting the bell mouth (22) area of the connector (2) by using a beam crane, slowly recovering the vertical pipe (42) by using a tensioner (5), and enabling the gooseneck connector (2) to leave the base (11) of the roll-over stand (1) by matching the beam crane with the tensioner (5);

s9, adjusting the base (11) of the roll-over stand (1) to the stern direction of the moon pool cover (3) through a chain block, opening the moon pool cover (3) in the stern direction, and removing the base (11) of the roll-over stand (1) by using a crane;

s10, after the roll-over stand (1) is completely dismantled, connecting a cross hoisting structure (7) to the gooseneck connector (2) by using a beam crane;

s11, opening the moonpools (A) on the two sides to the maximum opening, starting a tensioner (5) to lower a vertical pipe (42), putting the connector (2) in a synchronous beam crane matching mode, and dismantling a beam crane rigging after the top of the connector (2) reaches the height of the moonpool (A);

s12, installing the bending limiter (6) and the anode, and starting the tensioner (5) to lower the riser (42) to a specified water depth.

Technical Field

The invention relates to the field of ocean engineering, in particular to a vertical laying roll-over stand and a laying method for a gooseneck connector at the head end of a dynamic riser.

Background

The dynamic riser system is defined as an intermediate medium connecting an underwater static facility and a surface dynamic Floating Production Unit (FPU), is generally used for transmitting oil and gas resources produced by an underwater oil well to a Production terminal facility, has the characteristics of low requirement on measurement precision of an installation route, small underwater workload and the like, and is influenced by factors such as operating water depth, large laying tension, minimum bending radius of a hose and the like, so that the installation method and the process can be changed accordingly.

The installation method of the domestic vertical pipe adopts a relatively mature scheme of horizontal laying, the horizontal laying system cannot meet the operation requirement of the deep water vertical pipe along with the gradual enhancement of the development strength of oil and gas resources in the ocean deep water area, the design form of the vertical pipe, the size of an installation accessory, the water depth and other factors, and the vertical laying application is generated under the background.

For the installation of a dynamic riser system with complex configuration design, multiple installation accessories, large size and deep water depth, the problems of overlarge top tension, high installation space requirement and the like exist, and the traditional horizontal laying scheme can not meet the operation requirement.

Disclosure of Invention

The invention aims to solve the technical problem of providing a vertical laying roll-over stand and a laying method for a dynamic riser head end gooseneck type connector, aiming at the defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a gooseneck-shaped connector at the head end of a dynamic riser is constructed and a vertical laying roll-over stand comprises a base and a roll-over component rotatably mounted on the base;

the overturning assembly comprises an overturning plate, rotating shafts are respectively arranged on two opposite sides of the overturning plate, and the rotating shafts are respectively in rotating fit with the base;

gooseneck type connector including supply the hose interface that dynamic riser head end is connected and be used for with the horn mouth that one side of returning face plate is connected, the hose interface with be connected with crooked return bend between the horn mouth, make gooseneck type connector overturns during the base, the hose interface is up.

Preferably, the maximum height of the roll-over stand with the gooseneck connectors is lower at the top than the tensioners.

Preferably, the height of the base is not lower than the protruding structure of the central area of the moon pool.

Preferably, the base is provided with two supporting seats for the turnover plate to be rotatably mounted.

Preferably, the supporting seat comprises a supporting guide column and a reinforcing diagonal truss, and the supporting guide column and the reinforcing diagonal truss and the base are in a triangular shape.

Preferably, the edge of the turnover plate is provided with a raised plane limiting table, and the supporting seat is provided with a guide groove for the plane limiting table to be clamped in, so that the guide groove limits the rotating position of the plane limiting table relative to the supporting seat.

Preferably, the base is provided with a support platform for supporting the inflection point of the gooseneck-type connector.

Preferably, four lifting lugs are distributed on the periphery of the base.

Preferably, locking buckles are arranged on the periphery of the turnover plate and fix the horn mouth of the connector and the side face of the turnover plate.

A vertical laying method of a dynamic riser head end Goosenic type connector by utilizing the roll-over stand comprises the following steps;

s1, hoisting the roll-over stand with the gooseneck-shaped connector to the inner side area of the moon pool cover for storage, and ensuring that the bell mouth of the connector faces to the port of the ship;

s2, winding a winch steel wire rope on the deck through a guide wheel of the vertical laying system, connecting a dragging net sleeve at the head end of the vertical pipe, and assisting the head end of the vertical pipe to initialize through the vertical laying system;

s3, lowering the head end of the vertical pipe on the roller to the deck, connecting a winch steel wire rope rigging to the dragging net sleeve, hoisting the head end of the vertical pipe by the vertical laying system service crane, matching with a winch to finish the operation of the head end of the vertical pipe through a guide wheel, and releasing the vertical pipe;

s4, pulling the head end towing head of the vertical pipe to the moon pool direction by a winch, closing the tensioner when the head end towing head of the vertical pipe is lowered to the moon pool cover, detaching the towing head and the rigging at the head end of the vertical pipe, and installing a first section of bending limiter to the head end of the vertical pipe;

s5, starting a tensioner, and recovering the head end of the riser, wherein the height of the head end interface of the riser is higher than the position of the hose interface at the top of the gooseneck-shaped connector of the roll-over stand, so that the hose interface of the gooseneck-shaped connector and the head end interface of the riser are on the same vertical line;

s6, lowering the riser by using the tensioner, observing the relative position of the gooseneck connector interface and the riser interface, and adjusting the height of the hose interface at the head end of the riser through the tensioner to finish pairing and connection;

s7, limiting the gooseneck connector left and right by using a chain block, limiting the gooseneck connector front and back by using a rigging, and completing the split dismantling of the turnover plate and the limiting support column on the turnover frame by using a beam crane of a vertical laying system;

s8, hoisting the bell mouth area of the connector by using a beam crane, slowly recovering the vertical pipe by using a tensioner, and enabling the gooseneck connector to be separated from the base of the roll-over stand by matching the beam crane with the tensioner;

s9, adjusting the base of the roll-over stand to the stern direction of the moon pool cover through a chain block, opening the moon pool cover in the stern direction, and removing the base of the roll-over stand by using a crane;

s10, after the roll-over stand is completely disassembled, connecting a cross hoisting structure to the gooseneck-shaped connector by using a beam crane;

s11, opening the moonpools on the two sides to the maximum opening, starting the tensioner to lower the vertical pipe, cooperatively lowering the connector by the synchronous beam crane, and removing the beam crane rigging after the top of the connector reaches the height of the moonpool;

s12, installing the bending limiter and the anode, and starting the tensioner to lower the riser to the specified water depth.

The implementation of the vertical laying roll-over stand and the laying method of the gooseneck connector at the head end of the dynamic riser has the following beneficial effects: the angle of the gooseneck-shaped connector can be adjusted by the aid of the turning frame and the gooseneck-shaped connector can be fixedly stored, after the gooseneck-shaped connector is lifted by a crane, the connector is guided to the bell mouth and is butted with a turning plate mechanism on the turning frame structure, and turning and integral fixing operations are completed.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic front view of a vertical lay down roll-over stand for a dynamic riser head end gooseneck connector in an embodiment of the invention;

FIG. 2 is a schematic perspective view of the vertical lay down roll-over stand of the dynamic riser head end gooseneck connector of FIG. 1;

FIG. 3 is a schematic view of the roll-over stand mounted to the moonpool cover and the pulling head at the head end of the riser being pulled to the moonpool;

FIG. 4 is a schematic view with the roll-over stand removed;

FIG. 5 is a schematic view of the roll-over stand with the connector lifted after removal;

FIG. 6 is a schematic view of the moonpool cover with the lowering riser and connectors open;

FIG. 7 is a schematic illustration of the lowering of the riser and installation of the bend limiter and anode on the riser.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the dynamic riser head end gooseneck connector vertical lay down roll stand in a preferred embodiment of the present invention includes a base 11, a roll-over assembly 12 pivotally mounted to the base 11.

The turnover assembly 12 includes a turnover plate 121, and two opposite sides of the turnover plate 121 are respectively provided with a rotation shaft, and the rotation shafts are respectively matched with the base 11 in a rotation manner.

The gooseneck connector 2 comprises a hose connector 21 for connecting the head end 4 of the dynamic riser and a bell mouth 22 for connecting one side of the turnover plate 121, and a bent elbow 23 is connected between the hose connector 21 and the bell mouth 22, so that when the gooseneck connector 2 is turned to the base 11, the hose connector 21 faces upwards.

The angle of the goose-neck connector 2 can be adjusted by the turning frame 1 and the goose-neck connector 2 can be fixedly stored, after the goose-neck connector 2 is lifted by a crane, the bell mouth 22 of the connector 2 is butted with the turning plate 121 mechanism on the turning frame 1 structure, so that the turning and integral fixing operation is completed.

The overturning frame 1 is hoisted by using a ship crane and stored on the moon pool cover 3, the overturning frame 1 can ensure that the connection position of the gooseneck connector 2 and the head end 4 of the vertical pipe is in a vertically upward state and cannot shake, after the construction ship sails to a construction area of an offshore oil field, the head end 4 of the vertical pipe is completed by using the crane and a winch system on the construction ship, the head end 4 of the vertical pipe is matched with the gooseneck connector 2 on the moon pool cover 3 after passing through a guide wheel on the top of a vertical laying system tower, the connection and the leakage test are carried out, the overturning frame 1 is disassembled at the moon pool A after the connection is completed and no leakage occurs, the turnover frame is hoisted to a deck after the separation is carried out, then the moon pool A is opened, and the head end 4 with the gooseneck connector 2 is transferred to a specified water depth.

Preferably, the top of the roll-over stand 1 with the gooseneck connectors 2 at the maximum height is lower than the tensioners 5, i.e. the overall height of the roll-over stand 1 with the vertical connectors 2 should be lower than the minimum distance between the moonpool cover 3 and the bottom of the tensioners 5. The tensioner 5 is arranged above the moonpool cover 3 and has a certain height with the moonpool cover 3, and the maximum height of the whole overturning frame 1 and the connector 2 is smaller than the height of the bottom of the tensioner 5 to avoid interference.

Further, the height of the base 11 is not lower than the protruding structure 31 of the center area of the moon pool a, so that interference with the protruding structure 31 of the center area of the moon pool a hole can be avoided during the movement on the moon pool cover 3.

In some embodiments, the base 11 is designed with two supporting seats 111 for the turning plate 121 to be rotatably installed, further, the supporting seats 111 include supporting guide posts 112 and reinforcing diagonal truss 113, the supporting guide posts 112 and the reinforcing diagonal truss 113 are triangular with the base 11, and the guide posts 112 and the reinforcing diagonal truss 113 are designed to be detachable and connected by bolts.

Generally, four lifting lugs 114 are distributed around the base 11 for lifting four-leg rigging.

Preferably, the edge of the flipping plate 121 is provided with a raised plane limiting table 122, and the supporting base 111 is provided with a guide groove 115 for the plane limiting table 122 to be clamped into, so that the guide groove 115 defines a rotation position of the plane limiting table 122 relative to the supporting base 111, and defines a rotation angle of the flipping plate 121.

Further, the base 11 is provided with a support platform 116 for supporting the inflection point of the gooseneck connector 2.

Locking buckles 123 are arranged on the periphery of the turnover plate 121, the bell mouth 22 of the connector 2 and the side face of the turnover plate 121 are fixed, and after the bell mouth 22 of the gooseneck-shaped connector 2 hoisted by a crane is structurally butted to the turnover plate 121, the connector 2 and the turnover plate 121 are fixed into a whole through the locking mechanical buckles 123.

After the turning plate 121 and the gooseneck connector 2 are locked, the whole connector 2 can be turned 180 degrees around the limiting turning plate 121 by hoisting and lowering the gooseneck connector 2 by a crane, and the gooseneck bending inflection point of the gooseneck connector 2 is lowered to the supporting platform 116 on the base 11.

The gooseneck connector 2 is limited and fixed one by using the plane limitation of the turnover plate 121 and the plane limitation of the supporting platform 116 of the base 11.

In another embodiment of the invention, the vertical laying method of the dynamic riser head end 4Gooseneck type connector 2 using the roll-over stand 1 comprises the following method,

s1, installing four-leg hoisting rigging to the base 11 of the roll-over stand 1, hoisting the roll-over stand 1 with the gooseneck-shaped connector 2 to the inner side area of the moon pool cover 3 by a crane for storage, and ensuring that the bell mouth 22 of the connector 2 faces to the port of the ship. Because the ship main crane with the vertical laying system is arranged on the right side of the ship, the connector 2 is laid into water from the center of the moon pool A to a certain depth under water, the main crane is launched into water from the right side of the ship, the main crane is provided with a rigging with the length of 20 meters, the underwater robot connects the rigging to the gooseneck-shaped connector 2, the rigging is pre-installed on the gooseneck-shaped connector, then the underwater recovery is completed, and the turn-over is completed, and the bell mouth 22 is changed from the position facing the left side of the ship to the position facing downwards vertically.

S2, winding a winch steel wire rope on the deck through a guide wheel of the vertical laying system, connecting a dragging net sleeve of the head end 4 of the vertical pipe, and assisting the head end 4 of the vertical pipe to initialize through the vertical laying system;

s3, lowering the head end 4 of the vertical pipe on the roller to a deck by using a ship crane, installing riggings such as a dragging net sleeve and the like at a position one to two meters away from the head end 4 of the vertical pipe, connecting a winch steel wire rope rigging to the dragging net sleeve, lifting the dragging head end 4 of the vertical pipe by using a vertical laying system service crane, enabling the dragging head 41 to complete the operation of the head end 4 of the vertical pipe through a guide wheel in cooperation with a winch, and driving the roller to release the vertical pipe 42 by using a roller driving system in the process;

s4, as shown in FIG. 3, the winch pulls the dragging head 41 of the head end 4 of the riser to the direction of the moon pool A, when the dragging head 41 of the head end 4 of the riser is lowered to the moon pool cover 3, the tensioner 5 is closed, the dragging head 41, the dragging net sleeve and other riggings of the head end 4 of the riser are dismantled, and the first section of bending limiter 6 is installed to the head end 4 of the riser;

s5, starting the tensioner 5, recovering the head end 4 of the riser, wherein the height of the connector of the head end 4 of the riser is higher than that of the hose connector 21 at the top of the gooseneck connector 2 of the roll-over stand 1, and the position of the roll-over stand 1 on the moon pool A is adjusted by using a chain block to enable the hose connector 21 of the gooseneck connector 2 and the connector of the head end 4 of the riser to be on the same vertical line;

s6, lowering the riser 42 by using the tensioner 5, building a scaffold by deck personnel, observing the relative position of the gooseneck connector 2 interface and the riser head end 4 interface, and adjusting the height of the riser head end 4 hose interface 21 through the tensioner 5 to finish pairing and connection;

s7, limiting the gooseneck connector 2 left and right by using a chain block, limiting the gooseneck connector 2 front and back by using riggings such as a fastening belt and the like, and completing the split dismantling of the turnover plate 121 and the supporting seat 111 on the turnover frame 1 by using a beam crane of a vertical laying system;

s8, as shown in figure 4, hoisting the bell mouth 22 area of the connector 2 by using a beam crane, slowly recovering the vertical pipe 42 by using the tensioner 5, and enabling the beam crane to be matched with the tensioner 5 to enable the gooseneck connector 2 to leave the base 11 of the roll-over stand 1;

s9, adjusting the base 11 of the roll-over stand 1 to the stern direction of the moon pool cover 3 through a chain block, opening the moon pool cover 3 in the stern direction, and removing the base 11 of the roll-over stand 1 by using a crane;

s10, as shown in fig. 5, after the roll-over stand 1 is completely dismantled, the cross hoisting structure 7 is connected to the gooseneck connector 2 by using a beam crane, and the cross hoisting structure 7 is similar to a cross in shape;

s11, as shown in figure 6, opening the moonpool A at two sides to the maximum opening, starting the tensioner 5 to lower the stand pipe 42, cooperatively lowering the connector 2 by the synchronous beam crane, and removing the beam crane rigging after the top of the connector 2 reaches the height of the moonpool A; adjusting the opening of the moon pool cover 3 to a proper size, and paying attention to keep a certain space so as not to make the moon pool cover 3 touch the connector 2 or the stand pipe 42;

s12, as shown in fig. 6 and 7, the bending limiter 6 and the anode are installed, and the tensioner 5 is activated to lower the riser 42 to the specified water depth.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.