KR20130060117A - Full guiding system for riser handling of drillship - Google Patents

Abstract

PURPOSE: A full guiding system for risers of a drillship is provided to stably move the risers because the risers are fully guided from the inside of a cargo hold to a riser transfer part. CONSTITUTION: A full guiding system for risers(110) of a drillship comprises a gantry crane part(121), an elevation part, and a riser transfer part. The gantry crane part is installed inside a cargo hold to transfer the risers loaded inside the cargo hold to a parking position and has a winch(122) and a riser clamp(123). The elevation part is installed outside the cargo hold right above the parking position and has a winch and a riser clamp to lift the risers positioned in the parking position to the outside of the cargo hold. The riser transfer part transfers the risers lifted by the elevation part to a drill floor.

Description

Full Guiding System for Riser Handling of Drillship}

The present invention relates to a drillship riser full guiding system, and more particularly, to allow the riser loaded inside the drillship to be more stably guided and transported.

In general, drillships are special vessels that are operated to deliver oil by developing oil fields off the sea floor.

In addition, the drillship must be equipped with huge drilling equipment in the same condition as a general ship, so that the drilling equipment can be properly arranged to make the best use of the limited space, and the deployed equipment can be properly transported for use in drilling work. It is important to do.

These drillships use a riser as a device to recover muds such as mud, sand and gravel that are ejected during drilling and to protect the drilling pipe, which rises from the place loaded during drilling to the drill floor. It is to be transported and used and, once the drilling is completed, to be transported back to the loading site in the opposite way.

Conventionally, since a plurality of risers are loaded at a predetermined position on the deck of the drillship, and the crane is used to move to the drilling position by using a crane during the drilling operation, it takes up a lot of space for the drillship.

Accordingly, as described in Korean Patent Laid-Open Publication No. 10-2011-28815 (hereinafter, referred to as "prior art document"), a riser is provided by providing a hold inside the ship, as shown in FIG. By using the small crane 10 and the conveyor 20 is a device that can quickly transfer the riser from the onboard riser hold to the drill multi-tower.

In the above prior art document, the crane 10 is mounted on the conveyor 20 by lifting the riser placed upright on the riser hold while moving back and forth and left and right on the riser hold and mounted on the conveyor 20. The riser will travel from the riser hold to the drill multitower.

However, in the prior art document, the riser transfer device may swing due to the length of the riser during transfer of the riser by the crane, and there is a problem such that a considerable power is required to move the entire crane.

Republic of Korea Patent Publication No. 10-2011-28815 (published: 2011.3.22)

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems, and an object of the present invention is to be able to guiding the risers loaded on board to be stably transported to the riser transfer unit.

The solution of the present invention for achieving the above object is a gantry crane having a winch and a riser clamp while being installed inside the cargo hold so as to lift the riser loaded inside the cargo hold and transport it to the parking position for the riser supply. Wealth;

An elevation unit positioned at a vertical upper portion of the parking position and installed outside the cargo hold and having a winch and a riser clamp to lift a riser positioned at the parking position out of the cargo hold;

It includes a riser transfer unit for receiving the riser is lifted by the elevation unit to transfer to the drill floor,

Riser guide members are provided between each of the loaded risers of the cargo hold to be stably guided when lifting by the gantry crane,

An elevation part guide member is provided so that the riser clamp is stably guided in a vertical direction at a vertically rising and lowering position to lift the riser moved by the elevation riser clamp to the parking position by the gantry crane part.

Both ends of the parking position are provided with a movable support device, which consists of a fixed support, a link rotatably connected to the upper and lower portions of the support, and a cylinder provided between the pair of links.

In addition, the gantry crane portion is a structure that is fixed at both ends of the gantry frame while being guided during the rise and fall of the riser clamp, the gantry guide member to be guided when transported to the parking position.

In addition, the sliding frame of the elevation part is a structure in which the riser clamp provided in the elevation part is provided with an elevation part riser clamp guide member for reliably guided when mounting the riser to the riser transfer part.

In addition, the riser guide member provided in the cargo hold has a structure in which a stopper protrudes and is formed.

In addition, the riser guide member is a structure that is coupled to the protective plate to prevent damage from impact.

As described above, the present invention provides a more stable lifting operation when lifting the plurality of risers loaded by installing the riser guide members at intervals inside the cargo hold of the drillship by the gantry crane unit, and also the gantry crane unit. The riser clamped by forming the guide member is lifted in a stable state, and can be moved to the parking position, and an elevation part guide member is formed in the elevation part to move the riser in a stable state to the upper part of the elevation part, and the riser transfer part Even when mounted, it can be stably guided by an elevation riser clamp guide member that moves together when the sliding frame moves, so that full guiding is possible from the inside of the cargo hold to the riser transfer portion, thereby enabling stable movement of the riser.

In addition, the parking position is provided with a moving guide device so that when the gantry crane unit clamps the riser to move to the parking position, the moving guide member is reversed downward, and when lifted through the riser clamp of the elevation unit, the elevator unit is moved to its original position. Located on the same vertical line as the guide line of the riser can be made more smoothly.

1 is a schematic view showing a conventional riser transfer device.
2 is a cross-sectional view illustrating a riser full guiding system of a drillship according to an embodiment of the present invention.
Fig. 3 is a longitudinal sectional view of Fig. 2. Fig.
4 is an enlarged view of a gantry crane part to show the gantry guide member in FIG. 3.
5 is a plan view of a cargo ship hold according to an embodiment of the present invention.
FIG. 6 is an enlarged view of a portion A of FIG. 5.
7 is a plan view showing a state in which a riser clamp formed in an elevation part according to an embodiment of the present invention is disposed on a riser.
8 is an enlarged view of a portion B of FIG. 7.
FIG. 9 is an enlarged view of an elevation part to show the elevation part riser clamp guide member in FIG. 3; FIG.
10 is an enlarged side view of FIG. 9.
11A is a view illustrating a state in which a riser is lifted on an upper portion of an elevation portion according to an embodiment of the present invention.
FIG. 11B is a view illustrating a state in which a riser moves to a riser transfer part by moving a sliding frame in FIG. 11A.
12A is a view illustrating a state in which the gantry crane portion clamping the riser reaches the parking position in the state in which the movement guide member of the movement guide apparatus is retracted downward.
FIG. 12B illustrates a state in which the riser is seated at the parking position by the riser clamp of the gantry crane unit in a state in which the movement guide member of the movement guide apparatus is backwardly reversed in FIG. 12A.
FIG. 13A illustrates a state in which a riser clamp of an elevation portion descends and clamps a riser seated at a parking position in a state where a movement guide member of a movement guide device according to an embodiment of the present invention is in the original position.
FIG. 13B is a view showing a state of lifting a riser in the state of FIG. 13A.

Below. Specific details for carrying out the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view illustrating a riser full guiding system of a drillship according to an embodiment of the present invention, and FIG. 3 is a longitudinal cross-sectional view of FIG. 2.

Referring to FIG. 2, a plurality of risers 110 are stacked in the cargo hold 101 (riser hold) of the drillship 100, and the plurality of risers 110 are located at a predetermined position on the deck of the drillship 100. In the transfer device for transferring to the drill floor of the derrick, it is a full guiding system to enable a more stable transfer during the transfer of the riser (110).

Of the gantry crane unit 120 and the parking position 102 to sequentially lift the riser 110, which is loaded inside the cargo hold 101, up to the parking position 102 for the riser 110 supply, Located in the upper vertical and installed on the outside of the cargo hold 101 to lift the riser 110 in the parking position 102 to the outside of the cargo hold 101 and by the elevation 130 It has a structure consisting of a riser conveyance unit 140 (aka Catwalk Machine) for receiving the lifted riser 110 to transfer to the drill floor (derrick) is located.

In addition, the gantry crane portion 120 is a gantry frame 121 is installed to be movable in the horizontal direction inside the cargo hold 101, the winch 122 is installed on both ends of the gantry frame 121, and Riser clamp 123 connected to winch 122 and moved vertically during operation of winch 122 and clamping both ends of riser 110 to transfer riser 110 to parking position 102. It consists of a structure.

As shown in FIG. 4, the side surfaces of the riser clamps 123 installed at both end sides of the gantry frame 121 have a structure in which a gantry guide member 124 is coupled to the gantry frame 121 and arranged. .

In addition, as shown in FIGS. 4 and 5, the gantry crane part 120 drives the roller 125 by a motor along the rail 103 installed inside the cargo hold 101 to hold the cargo hold 101. It has a structure that can move horizontally inside.

In addition, the riser clamp 123 is connected to the winch 122, as shown in Figure 4, is moved in the vertical direction, is provided with a hook-type locking member 123a that can clamp both ends of the riser 110 have. The locking member 123a is connected to a hydraulic cylinder (not shown) to operate.

In addition, as shown in Figures 3 and 9, the elevation 130 is a cargo hold 101 to the riser 110 that reaches the parking position 102 by the gantry crane portion 120 from the outside of the cargo hold 101. As a device for lifting to the outside of the upper portion, a pair of installed on the outside of the cargo hold 101 so as to be located in the vertical upper portion of the parking position 102, spaced apart by a length equal to the length of the riser 110 A support frame 131, a sliding frame 132 installed on the support frame 131 so as to be slidable in a horizontal direction, and a winch 133 provided on the sliding frame 132 to lift the riser 110. And a riser clamp 134 configured to clamp and lift the riser 110 positioned at the parking position 102 by the winch 133.

The winch 133 and the riser clamp 134 are coupled to the sliding frame 132 to interlock with each other, as shown in FIGS. 10 and 11A.

The riser clamp 134 of the elevation unit 130 has the same structure as the riser clamp 123 of the gantry crane unit 120.

The sliding frame 132 is slid according to the driving of the motor on the support frame 131 and protrudes out of the support frame 131 to rise the riser 110 lifted through the winch 133 and the riser clamp 134. To be transferred to the transfer unit 140.

In addition, the riser transfer unit 140 is a structure having a bogie shape positioned to be adjacent to the elevation unit 130. The riser transfer unit 140 moves the sliding frame 132 to protrude toward one side of the support frame 131 so that the riser transfer unit 140 may be formed. Position the upper portion, the winch 133 and the riser clamp 134 is properly adjusted to place the riser 110 on the upper portion of the riser transfer part 140.

Here, the present invention, as shown in Figures 2 and 6, the riser guide member 150 for lifting in a state in which the plurality of risers 110 loaded on the cargo hold 101 is correctly aligned riser 110 It has a structure that is installed between each of the.

As shown in FIG. 6, the riser guide member 150 has a stopper 151 formed therein.

In addition, the riser guide member 150 has a protective plate 152 is coupled to prevent damage caused by the swing of the drillship.

2, 7 and 8, the riser 110 clamped by the riser clamp 123 of the gantry crane portion 120 reaches the parking position 102 and then the elevation portion ( When lifted through the winch 133 and the riser clamp 134 of 130, there is further provided an elevation guide member 160 to guide the movement of the riser clamp 134 installed at both ends of the riser 110 to be stable. Has a structure.

In addition, as shown in FIG. 10, the elevation riser clamp guide member 170 which is separated from the elevation guide member 160 and positioned on the same vertical line is further provided.

In addition, as shown in FIG. 12A, when the riser clamp 134 of the elevation unit 130 descends while being positioned at the parking position 102 to clamp and lift the riser 110, the elevation unit guide member 160 is lifted. It has a structure that is further provided with a movement guide device 180 that is movable in the up, down direction to guide to.

The movement guide device 180 is located on the side of the riser clamp 123 and is provided with a movement guide member 181 provided to be movable up and down, and the movement guide member 181 is connected to the fixing member 182. A pair of links 183 rotatably supported therethrough and a cylinder 184 coupled between the pair of links 183 to move the movement guide member 181 are included.

According to an embodiment of the present invention having such a configuration, as shown in FIGS. 2 and 3, in order to lift the riser 110 loaded in the cargo hold 101, first, a winch of the gantry crane part 120 is formed. 122 to lower the position of the riser 110 through the riser clamp 134 to clamp both ends of the riser 110, then lift it up through the winch 122, the gantry frame 121 is moved horizontally A parking position 102 is reached.

Here, the present invention, as shown in Figure 2, when the riser 110 is first lifted in a loaded state, without being shaken by the riser guide member 150 provided while supporting both ends of the riser 110 It is lifted stably.

In other words, as shown in FIG. 6, a stopper 151 is formed in the riser guide member 150 so that both ends of the riser 110 may be stably transported.

In addition, since the protection plate 152 is coupled to the riser guide member 150, it is possible to prevent damage to both ends of the riser 110 due to impact even when the drillship 100 swings at sea.

The riser guide member 150 has a rack function to support the plurality of risers 110 while maintaining an interval in an aligned state, and serves as a guide for allowing the riser to move in a stable state without being oscillated when the riser is transferred upward. It is.

In addition, as shown in Figure 4, the side of the riser clamp 123 is fixed to the gantry frame 121 is provided with a gantry guide member 124 slightly separated from the riser guide member 150, the riser guide member The riser 110 raised from the cargo hold 101 along the 150 is guided and raised along the gantry guide member 124 extending downward from the gantry frame 121, and then as shown in FIG. 102).

In other words, the gantry guide member 124 moves at the same time as the gantry frame 121 moves and is positioned at the parking position 102. Therefore, when the riser 102 moves to the parking position 102 by the gantry crane part 120, the gantry guide member 124 is always accompanied and can be guided in a stable state.

Meanwhile, when the riser 110 loaded in the cargo hold 101 by the gantry crane part 120 is positioned at the parking position 102, as shown in FIGS. 12A and 12B, the movement guide device 180 is moved. By operating the moving guide member 181 to move backward slightly while moving downward, so that the distance from the riser guide member 150 is further opened. Accordingly, the riser crane portion 120 can move to the parking position 102 without interference of the movement guide member 181.

When the movement guide member 150 is operated, the link 183 positioned at the upper side when the cylinder 184 provided between the pair of links 183 provided at the upper and lower portions of the support 182 in a fixed state contracts. Is rotated downward, accordingly the movement guide member 181 is also moved downwards, at this time, the link 183 located at the bottom is also downward, rotated at the same time.

In this case, since the pair of links 183 rotates while drawing a rotation radius, the movable guide member 181 moves downward to the right as shown in FIG. 12A without linearly moving downward from the original upper position. And, accordingly, the gap between the fixed portion and the elevator guide member 160 is opened, and in this state, the gantry crane unit 120 moves to enter the clamping position of the riser 110 in the parking position 102. will be.

As such, the riser clamp 123 is moved downward by the winch 122 from the gantry crane portion 120 that has moved to the parking position 102 in the clamped state of the riser 110 to be seated in the corresponding position.

Then, the riser clamp 123 is released, raised by the winch 122, and then repositioned, and the riser 110 positioned at the parking position 102 is stably guided through the elevation riser clamp guide member 170. While lifting.

More specifically, as shown in FIGS. 13A and 13B, the riser clamp 134 formed on the elevation unit 130 is moved downward by the winch 133 to be seated on the parking position 102. Lifting by clamping both ends of 110).

At this time, the movement guide member 181 of the movement guide device 180 is located in a vertical line parallel to the elevation guide member 160, when lifting the riser 110, the clamping riser clamp 134, the movement At the same time as receiving the guide of the guide member 181, while being guided by the elevation guide member 160, as shown in Figure 2 and 10, out of the cargo hold 101 to reach the upper portion of the elevation 130. do.

In this state, as illustrated in FIGS. 11A and 11B, the riser clamp 134 moves the riser clamp 134 in a state in which the sliding frame 132 is moved (from left to right on the drawing) to clamp the riser 110. After moving up to a position), the riser 110 is moved downward through the winch 133 and mounted on the riser transfer part 140.

At this time, both ends of the riser clamp 134 is provided with an elevation riser clamp guide member 170, it can be mounted while being stably guided when mounted on the riser transfer unit 140.

On the other hand, the riser 110 mounted on the riser transfer unit 140 is transported to the drill floor located in the derrick is sent down to the sea water to enable drilling work.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. It will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: drillship
101: cargo hold
102: parking position
103: rail
110: riser
120: gantry crane part
121: Gantry Frame
122: winch
123: Riser Clamp
123a; Locking member
124: gantry guide member
125: roller
130: Elevation Department
131: support frame
132: sliding frame
133: winch
134: Riser Clamp
140: riser transfer unit
150: riser guide member
151: Stopper
152: shield
160: Elevation guide member
170: elevator riser clamp guide member
180: moving guide device
181: moving guide member
182: support
183: link
184: cylinder

Claims (5)

A gantry crane unit having a winch and a riser clamp installed in the cargo hold to lift the riser loaded in the cargo hold and then to the parking position for supplying the riser;
An elevation unit positioned at a vertical upper portion of the parking position and installed outside the cargo hold and having a winch and a riser clamp to lift a riser positioned at the parking position out of the cargo hold;
It includes a riser transfer unit for receiving the riser is lifted by the elevation unit to transfer to the drill floor,
Riser guide members are provided between each of the loaded risers of the cargo hold to be stably guided when lifting by the gantry crane,
An elevation part guide member is provided so that the riser clamp is stably guided in a vertical direction at a vertically rising and lowering position to lift the riser moved by the elevation riser clamp to the parking position by the gantry crane part.
At both ends of the parking position, a fixed support, a link rotatably connected to the upper and lower portions of the support, and a cylinder provided between the pair of links are provided with movable guide devices, respectively. Drillship Riser Full Guiding System.
The method according to claim 1,
The gantry crane unit is fixed at both ends of the gantry frame while being guided when the riser and rise of the riser clamp, at the same time, the drillship riser full guiding system comprising a gantry guide member to be guided when transported to the parking position.
The method according to claim 1 or 2,
Drilling riser pull guiding system, characterized in that the sliding frame is provided with an elevation riser clamp guide member for guiding the riser clamp provided on the riser to the riser stably when the riser is mounted to the riser transfer unit.
The method according to claim 1,
A drillship riser pull guiding system, characterized in that a stopper protrudes and is formed on the riser guide member provided in the cargo hold.
The method according to claim 1 or 4,
The riser guide member is a drillship riser pull guiding system, characterized in that the protective plate is coupled to prevent damage from impact.

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