KR20160056473A

KR20160056473A - Semi submersible Drilling Rig

Info

Publication number: KR20160056473A
Application number: KR1020140156291A
Authority: KR
Inventors: 김법영
Original assignee: 현대중공업 주식회사
Priority date: 2014-11-11
Filing date: 2014-11-11
Publication date: 2016-05-20

Abstract

A drilling offshore structure according to an embodiment of the present invention, in a drilling offshore structure where a gantry crane and a skid to move a spurt prevention device are prepared, includes: a main part to form a space wherein the skid is prepared; a rail to support movement of the gantry crane, while being prepared across the main part so that the gantry crane passes by the skid; a door to open and close the main part by being installed in the main part; and a pod room which is prepared outside the main part included in a dangerous zone, and has a space prepared to maintain a pod controlling the spurt prevention device, and is prepared in a safety zone. The drilling offshore structure according to the present invention can use a cheap pod test apparatus without having an explosion proof function, since the drilling offshore structure can arrange the pod test apparatus in the safety zone by comprising the pod room outside the main part. Also, the drilling offshore structure can prevent work delay since an equipment replacement part can replace the spurt prevention device rapidly and thus the spurt prevention device can stand by always to work.

Description

[0001] Semi submersible drilling rig [0001]

The present invention relates to a drilling offshore structure.

With the rapid development of international industrialization and industry, the use of earth resources such as petroleum is gradually increasing, and thus the stable production and supply of oil is becoming a very important issue on a global scale.

For this reason, the development of marginal oil fields and deep-sea oil fields, which had been neglected due to economic difficulties, has become economical in recent years. Therefore, along with the development of submarine mining technology, drilling rigs with drilling facilities suitable for the development of these oilfields have been developed.

In the drill ship, a moonpool is formed at the center of a drill rig equipped with various drilling equipment so that a riser can be moved up and down to drill oil and gas existing under the sea floor.

Here, the riser is a device for recovering mud, sand, gravel and the like which are sprayed during drilling and protecting the drill pipe for drilling. In the drilling work, the riser is transported from the receiving part through the drill floor to the platform , And when the drilling operation is completed, it is again transported to the receiving place, which is the loading place, through the reverse route.

In particular, semi-submersible drilling rigs (semi-submersible offshore structures) in drilling rigs include pontoons as box-shaped buoyants for floating in seawater and are used to adjust the position of the pontoons to prevent them from being displaced by the flow of seawater Thruster.

That is, semi-submersible drill rigs are generally placed in parallel with each other with two pontoons that are submersed in water and provide buoyancy. At this time, the pontoon can act as a propulsion for navigation. In each pontoon, two or more column-shaped columns supporting the platform are installed.

On the platform supported by the column there is generally a drilling facility in the center and a storage area for drilling equipment for storing accommodation for crew, work area and tubular drilling equipment such as risers, drilling pipes, casings, liners, etc. . Hereinafter, a drilling marine structure including semi-submersible drilling rigs will be described with reference to the drawings.

1 is a plan view showing a structure of a general drilling offshore structure.

As shown in Fig. 1, the drilling offshore structure 1 includes a main portion 10 provided on a platform (not shown) on which a door frame (not shown) is formed. In the drilling and offshore structure 1, a certain space is separated into a danger zone and a safety zone, and a BOP stack 20 constituting an ejection preventing device (not shown) and a skid 30 moving a blow- May be provided. In addition, a rail 40 is provided in the main section 10 to support the movement of the gantry crane 50.

By the way, the BOP stack 20 stored in the main part 10 is assembled up and down in a row to form an ejection preventing device and moves to the ocean through the door frame. On the other hand, the ejection preventing device needs to be replaced depending on the elapse of the use period and the need for repairs. In order to improve the operation, it is necessary to improve the ejection preventing device so that the ejection preventing device can be quickly replaced.

It is an object of the present invention to provide a drilling and offshore structure capable of rapidly repairing a pod capable of controlling an ejection preventing device and quickly replacing the ejection preventing device. will be.

A drilling marine structure according to an embodiment of the present invention includes a skid and a gantry crane for moving the spray preventing device, the drilling offshore structure comprising: a main part having the skid therein; A rail provided across the main section such that the gantry crane passes through the skid and supports movement of the gantry crane; A door installed in the main part and opening / closing the main part; And a pod room provided on the outside of the main part included in the hazardous area, the pod room being provided in a safe area and provided with a space for maintaining the pod controlling the spray preventing device.

Specifically, the apparatus may further include an equipment replacement unit provided outside the main unit adjacent to the opening portion opened by the door, wherein a space is formed to replace the discharge preventing apparatus.

Specifically, the rail is provided in each of the inside of the main part and the outside of the main part, the gantry crane moves along the rail inside and outside the main part, and the door opens and closes the main part across the rail, .

Specifically, the pod room may be spaced apart from the opening by a predetermined distance.

Specifically, the pod room is provided so as to be separated from the opening by 3 m.

Specifically, the pod is installed in the ejection preventing device to control the flow of the fluid inside the ejection preventing device.

The drilling and offshore structure according to the present invention can provide the pod room on the outside of the main part so that the pod test equipment can be placed in the safe zone and the low pod test equipment can be used without having explosion- The ejection preventing device can be quickly replaced at the replacement part, and the ejection preventing device can always wait for the operation to be possible, so that the work delay can be prevented.

1 is a plan view showing a structure of a general drilling offshore structure.
2 is a plan view showing the structure of a drilling offshore structure according to an embodiment of the present invention.
3 is a front view showing a door of a drilling marine structure according to an embodiment of the present invention.
4 is a plan view showing a structure of a drilling offshore structure according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements have the same numerical numbers as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a plan view showing a structure of a drilling offshore structure according to an embodiment of the present invention, and FIG. 3 is a front view showing a door of a drilling offshore structure according to an embodiment of the present invention.

2 and 3, the drilling offshore structure 100 according to an embodiment of the present invention includes a main portion 110, a door 115, a BOP stack 120, a skid 130, (140), a gantry crane (150), a pod room (160), and an equipment replacement unit (170).

Here, the drilling marine structure 100 of the present embodiment is provided with a buoyancy pontoon (not shown), a platform (not shown) supported by a column (not shown) on the pontoon, And can be moved by a thruster (not shown) installed.

The main part 110 of the present embodiment may be provided in a platform (not shown) with a space in which the skid 130 and the BOP stack 120 are provided.

The main part 110 is set as a dangerous area 111 in the drilling offshore structure 100 and the space of the main part 110 is partitioned by a partition wall (not shown) An opening portion (not shown) is formed in the main portion 110 formed by the partition wall, and a door 115 is provided across the opening portion.

Here, the danger zone 111 is a region where a safety accident may occur due to gas generation or the like, and may have a higher standard such as explosion proof than a safety zone.

The BOP stack 120 and the skid 130 are provided in the main unit 110, Here, the skid 130 is constituted by a device for moving the ejection preventing device.

In addition, the ejection preventing device of the present embodiment is implemented by the BOP stack 120, and the BOP stack 120 may have a separate BOP (not shown) or BOP, LMRP (not shown) . Here, the BOP stack 120 is assembled in an up-down array and is lowered below the platform.

The BOP stack 120 is provided in the main part 110 in a plurality (two in this embodiment). The ejection protection device separated by the BOP stack 120 is assembled before moving to the ocean through the door frame. In addition, the ejection protection device or BOP stack 120 may be moved on the skid 130 during movement. Here, the skid 130 has a configuration in which an ejection preventing device is seated and carries the ejection preventing device, and a moving wheel can be provided and operated to carry the ejection preventing device.

When the spray preventing device is mounted on the skid 130, a gantry crane 150 provided in the main part 110 can be used. The gantry crane 150 moves along the rail 140 and the rail 140 is installed in the main portion 110 to support the movement of the gantry crane 150.

Here, the rail 140 is provided across the main part 110 so that the gantry crane 150 passes the skid 130. The rails 140 are installed in the main part 110 so that the ejection preventing device on the equipment replacing part 170 provided outside the main part 110 is carried into the main part 110 by the gantry crane 150. [ As shown in Fig. That is, the gantry crane 150 moves along the rail 140 along the inner and outer sides of the main portion 110. The rail 140 includes an inner rail 141 and a main portion And an outer rail 142 provided on the outer side of the outer rail 110.

The main part 110 is included in the dangerous area 111 separated from the safe area and is connected to the dangerous area 111 by the door 115 provided at the opening of the main part 110. [ May be closed or open.

The door 115 separates the main part 110 from the equipment replacing part 170 and the outside of the main part 110 opened by the door 115 is opened and exposed by the door 115, May be included in the hazardous area 111.

3, in this embodiment, the door 115 slides across the longitudinal direction of the rail 140 on the rail 140 extending outwardly from the inside of the main portion 110, 110). Here, the wheels 151 of the gantry crane 150 are provided as a pair and are slidably inserted into the rail 140, and the rail 140 is installed on the bottom surface D of the main portion 110 do.

Particularly, the equipment replacing portion 170 is provided at a position opposite to the opening portion of the main portion 110 opened by the door 115. When replacement of the ejection preventing device is required, The ejection preventing device is exchanged through the space of the replacement part 170. [

That is, the equipment replacing portion 170 of the present embodiment is provided outside the main portion 110 adjacent to the opening (not shown) opened by the door 115, and a space is formed to replace the ejection preventing device.

In addition, the pod room 160 of the present embodiment is provided inside the main part 110 to provide space for maintenance of a pod (not shown) as equipment for controlling the spray preventing device, If the pod is moved to another area, it can be repaired adjacent to the door without delay. Here, the pod may be installed in the ejection preventing device to control the fluid flow inside the ejection preventing device.

As described above, according to the present embodiment, the pod room 160 is provided in the main part 110, so that the pod can be immediately maintained without having to discharge the pod to the outside when the pod malfunctions, It is possible to promptly change the ejection preventing device so that the ejection preventing device can always be operated so that the delay of the operation can be prevented.

4 is a plan view showing a structure of a drilling offshore structure according to another embodiment of the present invention.

4, the drilling marine structure 200 according to another embodiment of the present invention includes a main portion 110, a door 115, a BOP stack 120, a skid 130, a rail 140, A gantry crane 150, a pod room 260, and an equipment replacement unit 170.

Here, the drilling marine structure 200 of the present embodiment is provided with a buoyancy pontoon (not shown), a platform (not shown) supported by a column (not shown) on the pontoon, And can be moved by a thruster (not shown) installed.

The main part 110 is set as a dangerous area 111 in the drilling offshore structure 200 and the space of the main part 110 is partitioned by a partition wall (not shown) An opening (not shown) is formed in the main portion 110 formed by the partition wall. A door 115 is provided across the opening.

A door 115 is slidably installed on the main portion 110 across the longitudinal direction of the rail 140 on a rail 140 extending from the inside of the main portion 110 to the outside. 3) 151 of the gantry crane 150 are provided as a pair and slidably inserted into the rail 140 so that the rail 140 can move on the bottom surface of the main portion 110 See Fig. 3; D).

In addition, the pod room 260 of the present embodiment is provided in the safe area adjacent to the outside of the main part 110 to form a space for servicing a pod (not shown) as equipment for controlling the spray preventing device, The pod can be moved to another area so that the pod can be repaired adjacent to the pod without delay. Here, the pod may be installed in the ejection preventing device to control the fluid flow inside the ejection preventing device.

As described above, according to the present embodiment, since the pod room 260 is provided outside the main part 110, the pod testing equipment can be disposed in the safe area, and the pod testing equipment can be provided at low cost It is possible to promptly replace the ejection preventing device from the equipment replacing portion 170, and it is possible to always wait for the ejection preventing device to be operable, thereby preventing work delay.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

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 invention as defined by the appended claims.

1, 100, 200: drilling offshore structure 10, 110: main part
111: Hazardous area 115: Door
20, 120: BOP stack 30, 130: skid
40, 140: Rail 50, 150: Gantry crane
160, 260: Ford Room 170: Equipment Replacement Unit

Claims

A drilling offshore structure having a skid and a gantry crane for moving an ejection preventing device,
A main portion having a space in which the skid is disposed;
A rail provided across the main section such that the gantry crane passes through the skid and supports movement of the gantry crane;
A door installed in the main part and opening / closing the main part; And
And a pod room provided on the outside of the main part included in the hazardous area and provided with a space for maintenance of the pod controlling the spray preventing device and provided in the safe area.

The method according to claim 1,
Further comprising an equipment replacing part provided outside the main part adjacent to the opening part opened by the door and having a space for replacing the ejection preventing device.

The method according to claim 1,
Wherein the rails are provided inside the main portion and outside the main portion, respectively,
The gantry crane moves along the rail along the inside and outside of the main portion,
Wherein the door opens and closes the main section across the rail.

The method of claim 1,
And is spaced a predetermined distance from the opening.

5. The method of claim 4,
And is spaced apart from the opening by 3 m.

The pod according to claim 1,
And a drilling and offshore structure installed in the ejection preventing device for controlling the flow of the fluid inside the ejection preventing device.