KR101834319B1 - An offshore plant including cantilevered drill floor - Google Patents

An offshore plant including cantilevered drill floor Download PDF

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Publication number
KR101834319B1
KR101834319B1 KR1020150157728A KR20150157728A KR101834319B1 KR 101834319 B1 KR101834319 B1 KR 101834319B1 KR 1020150157728 A KR1020150157728 A KR 1020150157728A KR 20150157728 A KR20150157728 A KR 20150157728A KR 101834319 B1 KR101834319 B1 KR 101834319B1
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KR
South Korea
Prior art keywords
rail
rack gear
gear
rack
drive motor
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KR1020150157728A
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Korean (ko)
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KR20170054943A (en
Inventor
김성준
지창열
차지혜
Original Assignee
삼성중공업 주식회사
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Priority to KR1020150157728A priority Critical patent/KR101834319B1/en
Publication of KR20170054943A publication Critical patent/KR20170054943A/en
Application granted granted Critical
Publication of KR101834319B1 publication Critical patent/KR101834319B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413Floating drilling platforms, e.g. carrying water-oil separating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00Vessels parts, details, or accessories, not otherwise provided for
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling

Abstract

An offshore plant having a cantilever type work floor is provided. The offshore plant includes at least one upper rail formed in a lower portion of the cantilever type drilling floor and extending in a first direction, at least one lower rail formed on the deck and extending in a second direction perpendicular to the first direction, A skid box disposed between the lower rails and movable along the upper rails and the lower rails, and a first drive motor and a second drive motor mounted on the skid box, wherein the upper rails include a length of the upper rail on one side of the upper rail, And the lower rail includes a first lower rack gear formed on one side of the lower rail along the longitudinal direction of the lower rail, and the first driving motor includes a first upper rack gear And the second drive motor is connected to a second pinion gear connected to the first lower rack gear.

Description

[0001] An offshore plant including cantilevered drill floor with a cantilever-
The present invention relates to an offshore plant having a cantilever type work floor, and more particularly to a offshore plant on which a cantilever type work floor can be moved.
An offshore structure having a cantilever type work floor, particularly an offshore plant having a cantilever type drilling floor such as a jack up league, includes legs fixed to the sea floor and is configured to be able to move up and down along the legs. Further, the cantilever type drilling floors can be moved toward the outside on the hull or platform for convenience of operation.
This movement of the cantilever type work floor can be driven by a so called skidding system and the skidding system can be moved on the X-Y plane of the platform to finally determine the drilling position in a marine drilling plant such as a jack-up league.
US Published Patent 2010-0260555
Generally, a skidding system uses a hydraulic device to move a cantilever type work floor. The skidding system using the hydraulic device performs a discontinuous movement in which the entire cantilever-type work floor is moved by one stroke corresponding to one stroke of the hydraulic apparatus. That is, a skidding system using a hydraulic device has a difficulty in providing fine movement and continuous rapid movement to a cantilever-type work flow, since the cantilever-type work floor must be horizontally moved at a predetermined movement interval.
In addition, since the hydraulic device generally requires a peripheral device such as a hydraulic pump and a hydraulic pipe, the maintenance thereof may be difficult and costly.
Accordingly, an object of the present invention is to provide an offshore plant having a cantilever type work floor including a skidding system capable of continuous movement and fine movement.
Another object of the present invention is to provide a marine plant having a cantilever type work floor that is easy to repair and requires little cost.
The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.
According to an aspect of the present invention, there is provided an offshore plant having a cantilever type work floor according to an embodiment of the present invention, comprising: at least one upper rail formed at a lower portion of the cantilever type drilling floor and extending in a first direction; One or more lower rails formed on the deck and extending in a second direction perpendicular to the first direction; A skid box disposed between the upper rail and the lower rail and movable along the upper rail and the lower rail;
A first drive motor mounted on the skid box and relatively moving the skid box relative to the upper rail; And
And a second drive motor mounted on the skid box and relatively moving the skid box relative to the lower rail.
The upper rail includes a first upper rack gear formed on one side of the upper rail along the longitudinal direction of the upper rail, and the lower rail is disposed on one side of the lower rail along the longitudinal direction of the lower rail. And the first drive motor is connected to a first pinion gear connected to the first upper rack gear, and the second drive motor is connected to the first lower rack gear And is connected to the second pinion gear.
The third driving motor is connected to a third pinion gear connected to the second upper rack gear, the fourth driving motor is connected to a fourth pinion gear connected to the second lower rack gear, Wherein the first drive motor is connected to a first pinion gear connected to the first upper rack gear through the first engagement opening and the second drive motor is connected to the first lower rack via the second engagement opening, And is connected to a second pinion gear connected to the gear.
The skid box includes an upright columnar body, a lower linear guide formed at a lower end of the body, and an upper linear guide formed at an upper end of the body, wherein the lower linear guide linearly guides the lower rail in a second direction, And the upper linear guide linearly guides the upper rail in the first direction.
The upper rail and the lower rail are T beams each having a support plate and a standing plate. The first upper rack gear is formed on one side of a support plate of the first rack gear, And is formed on one side of the support plate of the first lower rack gear.
A part of the first pinion gear is inserted into the first engagement opening and rack-and-pinned to the first upper rack gear, and a part of the second pinion gear is inserted into the second engagement opening, And is rack-and-pinion-coupled to the first lower rack gear.
 The upper rail further includes a second upper rack gear formed on the other side of the upper rail along a longitudinal direction of the upper rail, And the lower rail further includes a second lower rack gear formed on the other side of the lower rail along the longitudinal direction of the lower rail, and the third driving motor includes a third lower rack gear connected to the third upper rack gear, And the fourth drive motor is connected to a fourth pinion gear connected to the second lower rack gear.
The skid box includes a second engagement opening exposing the second upper rack gear to the outside and a second engagement opening exposing the second lower rack gear to the outside, And the fourth drive motor is connected to a fourth pinion gear connected to the second lower rack gear through the reamer coupling opening, .
Other specific details of the invention are included in the detailed description and drawings.
1 is a side view schematically showing a jack-up rig as an example of an offshore structure having a cantilever type work floor.
2 is a top view schematically showing a jack-up rig as an example of an offshore structure having a cantilever type work floor.
3 is a partially enlarged top view in which a part of a cantilever type work floor of an offshore plant according to an embodiment of the present invention is omitted.
4 is a perspective view illustrating a skid box of an offshore plant according to an embodiment of the present invention and upper and lower rails to be fastened thereto.
5 is a perspective view of a skid box of an offshore plant according to an embodiment of the present invention, together with upper and lower rails joined thereto.
6 is a perspective view of a skid box of an offshore plant according to another embodiment of the present invention, together with upper and lower rails to be fastened thereto.
7 is a perspective view of a skid box of an offshore plant according to another embodiment of the present invention, together with upper and lower rails joined thereto.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.
Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.
Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other elements, steps and / or operations in addition to the stated elements, steps and / use. And "and / or" include each and any combination of one or more of the mentioned items.
Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
1 is a side view schematically showing a jack-up rig as an example of an offshore structure having a cantilever type work floor.
2 is a top view schematically showing a jack-up rig as an example of an offshore structure having a cantilever type work floor.
Referring to Figures 1 and 2, an offshore plant having a cantilever-type work floor according to one embodiment of the present invention is illustrated, in which the jack-up league 1 is illustrated, A cantilever type work floor 10, a plurality of legs 20, and a platform 30.
The plurality of legs 20 may be upright legs, one end of which is fixed to the seabed surface 50 and the other end is exposed to the outside of the ocean 40. The plurality of legs 20 may have a truss structure in which a plurality of pipes form a skeleton thereof. A sprue can 22 can be disposed at one end of the plurality of legs 20 and the plurality of legs 20 and the sea floor surface 50 can be stably fixed through the sprue can. The seabed surface 50 may be 150 to 200 m deep from the surface of the ocean 40.
Vertical elevated platforms, such as jack-up rigs, are typically installed in the ocean with a depth of 150 m to 200 m, so that the legs should be at least 150 m to 200 m long. Since legs having such lengths are difficult to carry and to install in the ocean, generally installed legs are, for example, a plurality of legs having a length of 10 to 50 meters, .
The platform 30 can be connected to a plurality of legs 20 and is capable of ascending and descending along a plurality of legs 20. The level of the platform 30 can be adjusted so as to be spaced apart from the surface of the ocean by a certain distance, whereby the platform 30 can be stably maintained without being affected by waves, tides, etc. on the surface of the ocean.
A cantilever type work floor 10 having a derrick is arranged to extend outwardly from one side of the platform 30 and includes equipment for drilling the bottom surface 50 to the bottom of the derrick 10, , Drilling bit, riser, etc. can be drilled down.
The cantilever type work floor 10 may be arranged such that one end of the cantilever type work floor is projected toward the ocean and the other end thereof is supported on the platform 30. The cantilever type work floor 10 can also be moved along a first direction D1 toward the outside of the platform 30 and along a second direction D2 perpendicular to the first direction D1 Can be moved. That is, the cantilever type work floor 10 can be moved in the horizontal direction on the plane (XY plane) formed by the deck of the platform 30. [
3 is a partially enlarged top view in which a part of a cantilever type work floor of an offshore plant according to an embodiment of the present invention is omitted.
3, an offshore plant according to an embodiment of the present invention includes upper rails for supporting a cantilever type work floor 10, lower rails fixed on the deck of the plant 30, And a skid box 300 disposed between the rails for supporting the cantilevered work floor 10 on the platform 30.
In one embodiment of the invention, the upper rails are illustrated as two rails and are illustrated as including a first upper rail 210 and a second upper rail 220. Also, in one embodiment of the present invention, the lower rails are illustrated as two rails and are illustrated as including a first lower rail 110 and a second lower rail 120. However, the present invention is not so limited, and the number of upper rails and lower rails may vary depending on design factors such as, for example, the size of the required work floor 10.
The first upper rail 210 and the second upper rail 220 may be arranged in parallel with each other and may be parallel to the first direction (x direction) from the platform 30 toward the outside ocean Lt; / RTI > The first upper rail 210 and the second upper rail 220 may be secured to the lower frame of the structure that constitutes the work floor 10 and may act as a part of the frame or frame that constitutes the work floor 10 .
The first lower rail 110 and the second lower rail 120 may be fixed on the deck of the platform 30. The first lower rail 110 and the second lower rail 120 may be arranged in parallel to each other and may be arranged in parallel in a second direction (y direction) perpendicular to the first direction (x direction).
The skid box 300 may be disposed between the first upper rail 210 and the second upper rail 220 and between the first lower rail 110 and the second lower rail 120, When having two upper rails and two lower rails, a total of four skid boxes 300 can be disposed between the upper rails and the lower rails.
The upper portion of the skid box 300 is movably coupled along the first upper rail 210 or the second upper rail 220 while supporting the first upper rail 210 or the second upper rail 220, May be coupled to the first upper rail 210 or the second upper rail 220 so as to be linearly guided. The lower portion of the skid box 300 is movably coupled along the first lower rail 110 or the second lower rail 120 on the first lower rail 110 or the second lower rail 120, And may be coupled to the first lower rail 110 or the second lower rail 120 so as to be linearly guided.
4 is a perspective view of a skid box 300 of an offshore plant according to an embodiment of the present invention, together with upper and lower rails to be fastened thereto.
5 is a perspective view of a skid box 300 of an offshore plant according to an embodiment of the present invention, together with upper and lower rails joined thereto.
4 and 5, a skid box 300 according to an embodiment of the present invention includes a body 310, an upper linear guide 320 formed on an upper portion of the body 310, And a first driving motor 340 and a second driving motor 350 mounted on the lower linear guide 330 and the body 310, respectively.
The body 310 may have sufficient rigidity to firmly support the work floor 10 on the platform 30 and may be an upright rigid body that extends vertically as a whole.
The upper linear guide 320 is coupled to the upper part of the body 310 such that the first upper rail 210 and the skid box 300 are relatively movable in the first direction May be formed.
A lower rail (110) and a lower linear guide (300) are coupled to the lower portion of the body (310) so that the lower rail (110) and the skid box (300) are relatively movable along the second direction 330 may be formed.
The upper linear guide 320 may include a first engagement opening 324 that exposes at least a portion of the first upper rail 210 to which the linear guide is linearly guided. Similarly, the lower linear guide 330 may include a second engaging opening 334 for exposing at least a part of the first lower rail 110 to which the linear guiding is externally exposed.
In one embodiment of the invention, the upper rails and the lower rails may be a T beam structure in which the support plate and the upright plate are coupled in a T-shape, and may include a rack gear formed along the longitudinal direction thereof on at least one side of the support plate. 4 and 5, the first upper rail 210 may include a first upper rack gear 212 formed along one side thereof, and the first lower rail 110 may have one side And a first lower rack gear 112 formed along the first lower rack gear 112.
The first engagement opening 324 may be formed on the upper linear guide 320 on the side adjacent to the first upper rack gear 212 and may expose a part of the first upper rack gear 212 to the outside. The second engagement opening 334 may be formed on the lower linear guide 330 on the side adjacent to the first lower rack gear 112 and may expose a part of the first lower rack gear 112 to the outside have.
The first drive motor 340 and the second drive motor 350 may be mounted on the outer surface of the body 310. [
The first drive motor 340 may be connected to the first pinion gear 342 via the first connection shaft 344 and may rotate the first pinion gear 342. The first pinion gear 342 can be partly inserted into the upper linear guide through the first engagement opening 324 and the first pinion gear 342 can be inserted through the first engagement opening 324 into the upper, And may be rack-and-pinion-coupled to the gear 212.
Similarly, the second drive motor 350 may be connected to the second pinion gear 352 via the second connection shaft 353, and may rotate the second pinion gear 352. The second pinion gear 352 can be inserted partly into the lower linear guide through the second engaging opening 334 and the second pinion gear 352 can be inserted into the lower linear guide through the second engaging opening 334, And can be rack-and-pinion-coupled to the gear 112.
The first drive motor 340 and the second drive motor 350 may be connected to the power supply control device 302 to be supplied with power and the drive thereof may be controlled by the power supply control device 302. The rotation of the first drive motor 340 and the second drive motor 350 causes the skid box 300 to be rotated through the first upper rack gear 212 and the first lower rack gear 112, 1 relative to the upper rail 210 or the first lower rail 110. That is, when the first driving motor 340 rotates, the first upper rail 210 and the skid box 300 can be relatively moved along the first direction (x direction) Can be linearly guided by the upper linear guide 320 of the box 300 and can be moved along the first direction (x direction). When the second drive motor 350 rotates, the first lower rail 110 and the skid box 300 can be relatively moved along the second direction (y direction), and the skid box 300 and the skid box 300 The first upper rail 210 and the work floor 30, which are supported by the first upper rail 300, can be moved along the second direction (y direction).
6 is a perspective view of a skid box of an offshore plant according to another embodiment of the present invention, together with upper and lower rails to be fastened thereto.
7 is a perspective view of a skid box of an offshore plant according to another embodiment of the present invention, together with upper and lower rails joined thereto.
6 and 7, the skid box 300 of the offshore plant according to another embodiment of the present invention and the upper and lower rails thereof are formed with rack gears along both side surfaces of the respective rails, There is a difference in that the rotational force of the drive motor is applied to the rack gears. Hereinafter, the same reference numerals are used for the same components as those of the skid box and the upper and lower rails connected thereto according to the embodiment of the present invention, and repeated description will be omitted.
In another embodiment of the present invention, the upper rails 210, for example, the first upper rails 210 are disposed on opposite sides of one side of the first upper rack gear 212, And a second upper rack gear 214 formed along the direction. The lower rails 110 may be formed on the other side of the first lower rack gear 112 on which the first lower rack gear 112 is formed, And may further include a lower rack gear 114.
The upper linear guide 320 may further include a third engagement opening 326 formed on a side adjacent to the second upper rack gear 214. The upper linear guide 320 may include a third engagement opening 326 to expose at least a portion of the second upper rack gear 214 to the outside.
Similarly, the lower linear guide 330 may further include a fourth engagement opening formed on a side adjacent to the second lower rack gear 114, and the lower linear guide 330 may include a second engagement hole At least a part of the lower rack gear 114 can be exposed to the outside.
The third drive motor 360 and the fourth drive mode may be mounted on the outer surface of the body in the vicinity of the third engagement opening 326 and the fourth engagement opening, respectively.
The third drive motor 360 may be connected to the third pinion gear 362 via the third connection shaft 364 and at least a portion of the third pinion gear 362 may be inserted into the third engagement opening 326 And can be rack-and-pinion-engaged with the second upper rack gear 214.
Similarly, the fourth drive motor 370 may be connected to the fourth pinion gear 372 through the fourth connection shaft, and at least a portion of the fourth pinion gear 362 may be inserted into the fourth engagement opening, And may be rack-and-pinion-coupled with the rack gear 114. [
That is, in another embodiment of the present invention, two drive motors are operated for one rail, so that the work floor 30 can be moved more smoothly.
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.
10: cantilever type working floor 100: lower rail
200: upper rail 300: skid box
310: Body 320: Upper linear guide
330: lower linear guide 340: first drive motor
350: second drive motor

Claims (8)

1. An offshore plant having a cantilever type work floor,
An upper rail formed at a lower portion of the cantilever type drilling floor and extending in a first direction;
A lower rail formed on the deck and extending in a second direction perpendicular to the first direction;
And a skid box disposed between the upper rail and the lower rail and movable along the upper rail and the lower rail,
The skid box includes:
An upright columnar body;
An upper linear guide mounted on the body and guiding the upper rail;
A lower linear guide mounted on the body and guiding the lower rail;
A first driving motor mounted on the body and rack-and-pinned to a first upper rack gear of the upper rail through a first coupling opening formed in the upper linear guide to relatively move the skid box relative to the upper rail; And
A second drive motor mounted on the body and coupled to the first lower rack gear of the lower rail through a second coupling opening formed in the lower linear guide to be rack and pinion connected to move the skid box relative to the lower rail Including,
Wherein the upper rail, the lower rail, and the skid box are provided in plural,
Wherein each of the plurality of skid boxes is separated from each other and disposed at a point where the upper rail and the lower rail intersect.
The method according to claim 1,
The upper rail includes the first upper rack gear formed on one side of the upper rail along the longitudinal direction of the upper rail,
The lower rail includes the first lower rack gear formed on one side of the lower rail along the longitudinal direction of the lower rail,
The first driving motor is connected to a first pinion gear connected to the first upper rack gear,
And the second drive motor is connected to a second pinion gear connected to the first lower rack gear.
The skid box according to claim 2, wherein the skid box includes the first engagement opening exposing the first upper rack gear to the outside and the second engagement opening exposing the first lower rack gear to the outside,
The first drive motor is connected to a first pinion gear connected to the first upper rack gear through the first engagement opening,
And the second drive motor is connected to a second pinion gear connected to the first lower rack gear through the second engagement opening.
The method according to claim 1,
Wherein the upper linear guide is formed at an upper end of the body to linearly guide the upper rail in the first direction,
And the lower linear guide is formed at a lower end of the body to linearly guide the lower rail in the second direction.
3. The rack according to claim 2, wherein the upper rail and the lower rail are T-shaped beams each having a support plate and a standing plate, the first upper rack gear is formed on one side of a support plate of the first rack gear, And the rack gear is formed on one side of the support plate of the first lower rack gear.
3. The planetary gear set according to claim 2, wherein a part of the first pinion gear is inserted into the first engagement opening and rack-and-pinned to the first upper rack gear, And is rack-and-pinion-coupled to the first lower rack gear.
The skid box of claim 2, further comprising a third drive motor and a fourth drive motor mounted on the skid box,
The upper rail further comprises a second upper rack gear formed on the other side of the upper rail along a longitudinal direction of the upper rail,
The lower rail further includes a second lower rack gear formed on the other side of the lower rail along a longitudinal direction of the lower rail,
The third drive motor is connected to a third pinion gear connected to the second upper rack gear,
And the fourth drive motor is connected to a fourth pinion gear connected to the second lower rack gear.
8. The rack according to claim 7, wherein the skid box further comprises a third engagement opening exposing the second upper rack gear to the outside and a fourth engagement opening exposing the second lower rack gear to the outside,
The third drive motor is connected to a third pinion gear connected to the second upper rack gear through the third engagement opening,
And the fourth drive motor is connected to a fourth pinion gear connected to the second lower rack gear through the fourth engagement opening.
KR1020150157728A 2015-11-10 2015-11-10 An offshore plant including cantilevered drill floor KR101834319B1 (en)

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Publication number Priority date Publication date Assignee Title
US10612315B2 (en) * 2018-02-08 2020-04-07 Saudi Arabian Oil Company Smart skidding system for land operations
CN110341902A (en) * 2018-04-03 2019-10-18 中集海洋工程研究院有限公司 Jack up multifunctional platform

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