KR20170048837A - Cantilever type derrick system and offshore plant with the same - Google Patents

Cantilever type derrick system and offshore plant with the same Download PDF

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Publication number
KR20170048837A
KR20170048837A KR1020150149435A KR20150149435A KR20170048837A KR 20170048837 A KR20170048837 A KR 20170048837A KR 1020150149435 A KR1020150149435 A KR 1020150149435A KR 20150149435 A KR20150149435 A KR 20150149435A KR 20170048837 A KR20170048837 A KR 20170048837A
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KR
South Korea
Prior art keywords
derrick
boom
drill floor
floor deck
cantilever
Prior art date
Application number
KR1020150149435A
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Korean (ko)
Inventor
송준호
이정재
정수정
Original Assignee
대우조선해양 주식회사
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Priority to KR1020150149435A priority Critical patent/KR20170048837A/en
Publication of KR20170048837A publication Critical patent/KR20170048837A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/04—Stanchions; Guard-rails ; Bulwarks or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Earth Drilling (AREA)

Abstract

The present invention relates to a cantilever derrick system and an offshore plant having the same. More particularly, the cantilever derrick system and the offshore plant having the same are capable of simplifying a structure of a derrick system and reducing the weight thereof, and allowing easy access to a drill floor deck for an operator by installing a derrick directly on an upper portion of the drill floor deck without a derrick support structure. According to the present invention, the derrick system of an offshore plant comprises a boom installed to be extendable toward the outside of the hull, and a derrick mounted on the boom to be movable along a longitudinal direction of the boom. The boom is provided with a drill floor deck, and a derrick stool is installed on the drill floor deck.

Description

[0001] The present invention relates to a cantilever type derrick system and an offshore plant having the same,

The present invention relates to a cantilever derrick system and an offshore plant having the same, and more specifically, by providing a derrick on the top of a drill floor deck without a derrick support structure, the operator can easily access the drill floor deck, A cantilever derrick system that can be simplified and lightweight, and an offshore plant having the same.

In general, offshore plants are used to develop resources such as oil and gas in the ocean. Drilling facilities such as drillship, semi-submersible drilling rig, jack- up rig. Derrick is installed in these offshore plants.

In a jack-up league in an offshore plant, it is difficult to change the position of the drilling equipment installed in the derrick because it is fixed to the seabed ground, and it is difficult to utilize the space on the main deck by forming the drapery necessary for the drilling by the derrick. Therefore, a cantilever movable type derrick system is used to solve these problems.

FIG. 1 is a view showing a jack-up rig having a cantilever derrick system according to a conventional technique, and FIG. 2 is a view showing a derrick support structure of a cantilever derrick system according to a conventional technique.

1 or 2, a conventional cantilever derrick system 10 of a jack-up rig comprises a cantilevered boom 11 mounted movably in a horizontal direction on a hull 20 of a jack up league, And a derrick 12 mounted on the boom 11.

In the cantilever derrick system 10 as described above, the boom 11 is located in the upper region of the ship 20 together with the derrick 12, and at the drilling site, the boom 11, together with the derrick 12, The drilling equipment installed in the derrick 12 moves to the outside of the hull 11 so that the drilling operation can be performed.

In the conventional cantilever derrick system 10, space is limited in the line width direction. Due to such space limitation, the drill floor area has to be formed in a multi-layered structure. A drill floor deck 39 is provided on the upper part of the boom 11 and a derrick support structure 31 of about 6.5 m height is mounted on the four corners of the drill floor deck 39 so as to protrude upward, Derrick Stool, 32).

In addition, in the four quadrangular planes of the drill floor deck 39, when a surface to be a connection path with the boom is referred to as an entry surface, a drawer for mounting a draw- And a raised floor 36 for mounting a deadline anchor is provided on the other side of the derrick support structure 35. The drawwall platform 35 and the raised floor 36 form a derrick support structure 31).

In addition, the access platform 37 must be mounted between the two platforms in order for the operator to easily access the drawWorks platform 35 and the raised floor 36. [

In the conventional cantilever derrick system 10, a derrick support structure is protruded to the upper part of the drill floor deck to require an additional access platform for the operator to approach, the system is complicated, and the structure is complicated, .

Korean Patent Laid-Open Publication No. 2015-0107257 (2015.09.23)

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems as described above, and it is an object of the present invention to provide a drill floor deck having a derrick without a derrick support structure, which facilitates access to a drill floor and simplifies the structure of the Derrick system It has its purpose.

According to an aspect of the present invention, there is provided a derrick system of an offshore plant, comprising: a boom extending outwardly to a hull; And a dike installed on the boom movably along a longitudinal direction of the boom, wherein the boom is provided with a drill floor deck, and the drill floor deck is equipped with a Derrick stool, .

And a catwalk provided at the boom for transferring a drilling pipe to the drill floor deck, wherein the derrick stool is located at the same height as the catwalk.

Drawworks for winding the wire supporting the drilling pipe are preferably installed at a higher position than the derrick stool.

Preferably, a windshield is provided along an edge of the drill floor deck.

Wherein the drilling pipe is moved from the drilling pipe reservoir to the catwalk and is moved to the drill floor deck and supported by the drilling pipe support member of the derrick to drill the seabed resources .

According to another aspect of the present invention, there is provided an offshore plant comprising: a hull; And a derrick system provided on the hull, wherein the derrick system provides a cantilever derrick system according to one aspect of the present invention.

According to the present invention, by providing the derrick directly on the top of the drill floor deck without the derrick support structure, the operator can easily access the drill floor deck, and the structure of the Derrick system can be simplified and lightened.

1 is a view showing a jack-up rig having a cantilever derrick system according to the prior art.
2 is a view showing a derrick support structure of a cantilever derrick system according to the prior art.
3 is a diagram illustrating a cantilever derrick system in accordance with one embodiment of the present invention.
4 is a top view of a cantilever derrick system in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the following embodiments can be modified into various other forms, and the scope of the present invention is not limited to the following embodiments.

Figure 3 illustrates a cantilever derrick system in accordance with one embodiment of the present invention, and Figure 4 is a top view of a cantilever derrick system in accordance with one embodiment of the present invention.

3 or 4, the cantilever derrick system 100 according to one embodiment of the present invention includes a boom 160 installed to extend outwardly to the hull; And a derrick 120 installed on the boom so as to be movable along the longitudinal direction of the boom 160. The boom 160 is provided with a drill floor deck 110, A Derrick stool 130 may be installed.

The boom 160 may be horizontally formed to have a cantilever structure on the ship and may be formed by connecting the derrick 120 and the slope material to have strength to support the drilling rig installed therein, And may have a truss structure, and as another example, it may be made of a structure having various materials and structures including steel, and may have an opening (not shown) along the longitudinal direction so that the equipment can vertically enter and exit by the derrick 120 May be formed.

The derrick 120 is vertically installed on the boom 160 and has a drilling rig for drilling oil and gas existing in the underground of the seabed and is equipped with offshore drilling, offshore casing, Riser lowering, etc., and can be used for all drilling operations, for example, a truss structure.

The derrick 120 may be slidably or movably mounted on a rail provided along the longitudinal direction of the boom 160 so as to be horizontally movable from the boom 160, The roller can smoothly move horizontally from the rail and change its position.

In mounting the derrick 120 to the drill floor deck 110, conventionally a derrick support structure with a height of 6.5 m is mounted on top of the drill floor deck, a derrick stool is installed on the derrick support structure, The present invention is characterized in that a derrick stool 130 is installed directly on the drill floor deck 110 without a derrick support structure and a derrick 120 is installed on the derrick stool 130, And a space in the line width direction can be ensured as much as possible.

That is, the drill floor deck 110 is disposed at the level of the derrick stool 130 and the equipment required for drilling is installed on the drill floor deck 110, The accessibility of the operator can be facilitated.

A deadline anchor equipment 151 installed on a raised floor can be moved to a drill floor deck 110 and a derrick personal elevator landing installed on a conventional Drawworks Platform The elevator landing 152 can also be moved and placed on the drill floor deck 110.

That is, the Derrick Personnel Elevator Landing 152 and the deadline anchor 151 move to the drill floor deck 110, thereby eliminating the need for a drawWorks platform and a raised floor, There is no need for an access platform to access the drill floor deck 110 so that the drill floor deck 110 can be provided with additional space to optimize the placement of drilling equipment at the location of the drill floor deck 110. [

As shown in FIG. 3, since the equipment itself is very large in size, the space constraint on the drill floor deck 110 may occur, and in order to facilitate the wire winding, May be installed on the support 145. Accordingly, the DrawWorks device 140 can be installed at a position higher than the derrick stool 130.

The drawbridge support 145 may be configured as a bar-shaped frame to facilitate placement with other drilling equipment.

4, the boom 160 may be provided with a drill floor deck 110 and a pipe rack deck 170. The drill floor deck 110 may include various drilling rigs and derrick A stall 130 is mounted and a pipe rack deck 170 is equipped with a drilling pipe reservoir 171 for storing a drilling pipe or a riser pipe and a catwalk 175 for transferring a drilling pipe.

The drilling pipe of the drilling pipe reservoir 171 is lifted by a riser handling crane to be transferred to the catwalk 175 and horizontally moved to the drill floor deck 110, Is vertically erected by a member (not shown) and can be advanced downward through the rotary table to drill a seabed resource stored in a reservoir located in a reservoir below the seabed.

The catwalk 175 is located at the same height as the derrick stool 130 of the drill floor deck 110 so that the drill pipe conveyed by the catwalk 175 can be horizontally moved to the drill floor deck 110. Here, the same height means the height of the floor to be installed, and may include a case where there is a difference in the height of the installed floor.

On the other hand, when the drilling floor deck 110 is detached or damaged due to a rapidly changing weather of the ocean, a wind shield (not shown) may be formed along the periphery of the drill floor deck 110 Can be installed. This is not fixed in advance with the derrick support structure as in the prior art, but it is possible to attach and detach the equipment so that it can be installed as needed according to the marine environment.

The offshore plant according to the present invention includes a hull and a derrick system, wherein the derrick system can be a cantilever derrick system 100 according to the present invention.

In addition, the offshore plant according to the present invention can be made up of a jack-up which is fixed to the sea bed by a plurality of legs installed so that the hull is lifted and lowered by a lifting drive part (not shown) as in the present embodiment.

As an offshore plant, the jack-up league is installed vertically so that three to six legs can be raised and lowered by the east part of the hull, and the hull can be installed on the sea surface with the legs as support. If the hull has three legs, it can have a planar structure close to a triangle. It can have various plane structures depending on the number of legs, use and structure design, and the space for installing piping or equipment for drilling on the upper surface A main deck may be provided, and facilities for residence or work may be installed on the main deck.

In another embodiment of the offshore plant according to the present invention, the hull may be a drillship that can be positionally controlled by a dynamic positioning system (also referred to as a "DP system"), , A semi-submersible drilling rig in which the hull is supported by single or multiple pontoon floats.

According to the cantilever derrick system having the above-described structure and the offshore plant having the above structure, it is possible to easily access the operator to the drill floor deck by providing the derrick on the top of the drill floor deck without the derrick support structure, There is an advantage of simplifying and lighter weight.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It is self-evident.

100: Cantilever Derrick system 110: Drill floor deck
120: Derek 130: Derek Stool
140: DrawWorks 160: Boom
170: Pipe Rack Deck 171: Drilling Pipe Storage
175: Catwalk

Claims (6)

In derrick systems of offshore plants,
A boom extending outwardly to the hull; And
And a derrick mounted on the boom movably along the longitudinal direction of the boom,
The boom is provided with a drill floor deck, and the drill floor deck is equipped with a Derrick stool. The method according to claim 1,
And a catwalk provided at the boom for conveying the drilling pipe to the drill floor deck,
Wherein the derrick stool is located at the same height as the catwalk. The method according to claim 1,
Wherein the draWorks for winding the wire supporting the drilling pipe are installed at a higher position than the derrick stool. The method according to claim 1,
Wherein a windshield is installed along an edge of the drill floor deck. The method of claim 2,
And a drilling pipe reservoir provided in the boom,
A drilling pipe is moved from the drilling pipe reservoir to the catwalk to move to the drill floor deck and supported by the drill pipe support member to drill the seabed resources. For offshore plants,
hull; And
And a derrick system provided on the hull,
The derrick system includes:
A marine plant, which is the cantilever derrick system according to any one of claims 1 to 5.
KR1020150149435A 2015-10-27 2015-10-27 Cantilever type derrick system and offshore plant with the same KR20170048837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150149435A KR20170048837A (en) 2015-10-27 2015-10-27 Cantilever type derrick system and offshore plant with the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150149435A KR20170048837A (en) 2015-10-27 2015-10-27 Cantilever type derrick system and offshore plant with the same

Publications (1)

Publication Number Publication Date
KR20170048837A true KR20170048837A (en) 2017-05-10

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