KR200489332Y1

KR200489332Y1 - Rotary Sock

Info

Publication number: KR200489332Y1
Application number: KR2020150006564U
Authority: KR
Inventors: 오석우
Original assignee: 현대중공업 주식회사
Priority date: 2015-10-06
Filing date: 2015-10-06
Publication date: 2019-06-03
Also published as: KR20170001301U

Abstract

The present invention relates to a rotary cutting method, and more particularly, to a rotary cutting method, An integral guide tube coupled to the rotary table interface and guiding the drill pipe; And an impact damping portion installed inside the guide tube and absorbing impact energy by the drill pipe.

Description

Rotary Sock

This invention relates to rotary cutting.

It is generally decided whether or not to use marine structures such as offshore platforms, semi-submergible rigs or drill ships depending on the depth of water and the condition of the marine conditions at the location where crude oil is buried. For example, a fixed platform is used for drilling 200 ~ 300m depths, a semi-submergible rig is used for depths 500 ~ 1000m, Drill ship is used at deep sea depth of 3,000m. Drill ship means a vessel used for oil exploration by drilling a hole in the bottom of the sea.

For oil exploration or drilling, the drill pipe is assembled using a rotary table provided at the bottom of the derrick before submerging the drill pipe. The rotary sock, which is the main equipment for assembling the drill pipe, And is used. FIG. 1 shows a conventional rotary cutting.

As shown in FIG. 1, the rotary saw 1 can be largely divided into first, second, third, and fourth parts 10, 20, 30, and 40.

The first part 10 is a rotary table interface and is installed at the top of the rotary table. The installation equipment 11 is configured to easily install the first part 10 on the rotary table.

The second part 20 is constituted by a guide tube for guiding the drill pipe and is connected to the first part 10.

The third part 30 is constituted by a guide tube for guiding the drill pipe as in the second part 20 and is connected to the second part 20.

The fourth part 40 is provided with an impact attenuator 41 in the tube so as to absorb impact energy when the drill pipe descends through the first to third parts 10, 20 and 30, And is connected to the third part 30.

The first, second, third, and fourth parts 10, 20, 30, and 40 are assembled as a flange 50 by a plurality of bolts and nuts. At this time, Locking pins are inserted into pre-formed locking holes to prevent loosening.

Further, a C-plate (C-plate) 2 is used to support the rotary saw 1 so as not to be shaken when the rotary saw 1 is installed on a rotary table or disassembled from a rotary table. This C-plate 2 is an essential accessory of the rotary saw 1.

In order to assemble the rotary saw 1 as described above, conventionally, after the third and fourth parts 30 and 40 are assembled in a work place provided outside the drill bit, on the drill floor, The first part 10, the second part 20 and the pre-assembled third and fourth parts 30 and 40 are assembled.

As a result, there is a problem that the number of workpieces to be assembled on a relatively narrow drill floor increases, so that a long working time is required for assembling. In addition, the position of the locking hole formed in the bolt and the nut after tightening the bolt- There is a problem that the locking pin can not be inserted due to inconsistency and the locking pin can not be inserted. Therefore, there is a problem that the assembly quality is lowered and the work productivity is lowered due to the additional work to solve this problem.

In addition, the C-plate 2 is first installed on the rotary table to support the rotary saw 1, the problem of the spacing between the C-plate 2 and the bearing of the rotary table and the problem to be installed inside the rotary table,

When installing the C-plate (2) on the upper part of the bearing of the rotary table, the C-plate (2) is made substantially equal to the step on the upper part of the bearing The C-plate 2 having a diameter of about 1.5 m is difficult to be stepped on by a worker in the course of installing the C-plate 2 on the rotary table, There is a problem that it takes a lot of air to keep the equilibrium when installing inside the table.

Korean Patent Publication No. 10-2014-0010692 (published on January 27, 2014)

It is an object of the present invention to provide a rotary cutting machine in which a guide tube for guiding a drill pipe is integrally formed to reduce the number of assembling steps of a guide tube .

It is also an object of the present invention to provide a rotary table interface unit provided at an upper end portion of a guide tube to be directly coupled to a rotary table so that a conventional C- And to reduce the installation cost of the C-plate.

It is also an object of the present invention to provide a rotary cutting machine in which a lower end portion of a guide tube is configured to be openable and closable so as to facilitate the maintenance of the shock damper provided inside the guide tube.

According to one aspect of the present invention, there is provided a rotary cutting machine comprising: a rotary table interface unit installed on a rotary table of an offshore structure; An integral guide tube coupled to the rotary table interface and guiding the drill pipe; And an impact damping portion installed inside the guide tube and absorbing impact energy by the drill pipe.

In more detail, the guide tube may further include at least one or more seed-fixing clamps on the outer circumferential surface of the guide tube.

Specifically, the rotary table interface unit may include: a rotary table interface installed at an upper portion of the rotary table; A support unit installed on a lower surface of the rotary table interface for supporting the rotary table interface and the outer circumferential surface of the guide tube; And a plurality of lifting lugs provided on the upper surface of the rotary table interface.

Specifically, the rotary table interface is formed at a central portion, and the insertion hole into which the guide tube is inserted; And a stepped portion formed on an edge portion of the rotary table and engaged with an edge portion of the rotary table.

Specifically, the guide tube may have a flange at an upper end thereof, and may be combined with the rotary table interface using the flange.

Specifically, the shock damping portion may include a stopper formed at a portion spaced from the lower end portion of the guide tube by a predetermined distance. A cover plate formed to be openable and closable at a lower end of the guide tube; And a shock damper installed inside the guide tube through a lower end of the guide tube and seated in a state where the stopper and the cover plate maintain a predetermined elasticity.

Specifically, the shock damper may be a spring.

According to the present invention, there is provided a rotary cutting machine in which a guide tube for guiding a drill pipe is integrally formed, thereby reducing the number of assembling steps of the guide tube.

The rotary cutting according to the present invention is configured so that the rotary table interface unit provided at the upper end of the guide tube is directly coupled to the rotary table so that the conventional C-plate is not provided as an accessory of the rotary cutting, And the installation number of the C-plate can be reduced.

In addition, the rotary shroud according to the present invention is configured to be capable of opening and closing the lower end portion of the guide tube, thereby facilitating maintenance of the shock damping portion provided inside the guide tube.

1 is a block diagram of a rotary cutting according to the prior art.
2 is a block diagram of a rotary cutting according to an embodiment of the present invention.
3 is an enlarged view for explaining the rotary table interface unit of FIG.
4 is an enlarged view for explaining the upper structure of the impact damping portion of FIG.
5 is an enlarged view for explaining the lower structure of the shock damping portion of FIG.

The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments, which are to be taken in conjunction with the accompanying drawings. 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 are assigned the same number as much as possible even if they are displayed on different drawings. In the following description of the present invention, a detailed description of related arts will be omitted if it is determined that the gist of the present invention may be unnecessarily obscured.

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

2 is an enlarged view for explaining a rotary table interface unit of FIG. 2, FIG. 4 is a view for explaining an upper structure of the shock damping unit of FIG. 2, and FIG. FIG. 5 is an enlarged view for explaining the lower structure of the shock damping portion of FIG. 2; FIG.

2 to 5, the rotary saw 100 according to one embodiment of the present invention includes a rotary table interface unit 110, a guide tube 120, an impact damping unit 130, And a clamp 130 (Sea-fixing Clamp).

The rotary shovel 100 assembles the drill pipe using a rotary table provided at the bottom of the derrick before the drill pipe is submerged in an offshore structure for oil exploration or drilling, It can be installed and used on a drill floor.

Here, the offshore structure is provided with a rotary table such as an offshore platform, a semi-submergible rig or a drill ship, and is capable of performing oil exploration or drilling using a drill pipe All marine structures can be included.

The rotary table interface unit 110 may be installed on a rotary table (not shown) of an offshore structure, and may be coupled with an upper end of a guide tube 120 to be described later.

The rotary table interface unit 110 may include a rotary table interface 111, a support unit 112, and a lifting lug 113.

The rotary table interface 111 may be installed on the upper portion of the rotary table and may include an insertion hole 111a and a step 111b.

The insertion hole 111a may be formed at a central portion of the rotary table interface 111. The insertion hole 111a may have a T shape in cross section so that the guide tube 120 can be inserted and coupled, A space corresponding to the thickness and the rim of the flange 121 provided at the end of the guide tube 120 and a space corresponding to the outer diameter of the guide tube 120 to be described later may be formed.

The step 111b may be formed at an edge portion of the rotary table interface 111 and may be configured so as to be caught at an edge portion of the rotary table when the rotary table interface 111 is installed in the rotary table.

A plurality of support portions 112 may be provided on the lower surface of the rotary table interface 111. The rotary table interface 111 supports the lower surface of the rotary table interface 111 and supports a rotary table interface 111) extending from the lower surface of the base plate 111 to a predetermined length.

A plurality of lifting lugs 113 may be provided on the upper surface of the rotary table interface 111 so that the lifting lugs 113 can be used when the rotary table interface unit 110 is moved.

The guide tube 120 may be coupled to the rotary table interface part () and guide the drill pipe.

Specifically, the guide tube 120 may be coupled to the rotary table interface 111 using a flange 121 inserted into the insertion hole 111a of the rotary table interface 111 and provided at the upper end thereof.

In assembling the drill pipe using the rotary table provided below the derrick (not shown) before lowering the drill pipe (not shown) to the underside for such guide tube 120, oil exploration or drilling, It may be configured to have an inner diameter and a length capable of guiding the pipe, and may be manufactured as an integral type.

The impact damping part 130 may be installed inside the guide tube 120 to absorb impact energy caused by the drill pipe when the drill pipe comes down through the guide tube 120, A cover plate 132, and a shock damper 133, as shown in FIG.

The stopper 131 may be formed at a portion spaced a predetermined distance from the lower end of the guide tube 120 so that the shock damper 133 installed inside the guide tube 120 moves upward It can play a role to prevent.

The cover plate 132 may be formed to be capable of opening and closing the lower end of the guide tube 120 in order to install or maintain the shock damper 133, which will be described later, inside the guide tube 120.

The cover plate 132 may be a flange type in which a drain plug 132a is provided in a part thereof.

The shock damper 133 may be installed inside the guide tube 120 through the lower end of the guide tube 120 and may be a spring that absorbs impact energy when the drill pipe comes down through the guide tube 120. [ . The impact damper 133 may be seated in the guide tube 120 by the stopper 131 and the cover plate 132 while maintaining a predetermined elasticity.

The pick-up clamp 140 is installed on the rotary table so as to prevent the guide tube 120 from being shaken to the left or to the right or to be used when the guide tube 120 is moved, 120 on the outer circumferential surface.

As described above, according to the present embodiment, the guide tube 120 guiding the drill pipe is integrally formed, thereby reducing the number of assembling steps of the guide tube 120. [

The present embodiment is configured such that the rotary table interface unit 110 provided at the upper end of the guide tube 120 is directly coupled to the rotary table so that the existing C- So that the manufacturing cost of the C-plate 2 and the installation number of the C-plate 2 can be reduced.

In addition, in the present embodiment, the lower end of the guide tube 120 is configured to be openable and closable, thereby facilitating maintenance of the shock damper 133 installed inside the guide tube 120.

Although the present invention has been described with reference to the embodiments of the present invention, it should be understood that the present invention is by no means restricted to such specific embodiments, and any person skilled in the art will understand that the present invention is not limited thereto It will be apparent to those skilled in the art that various combinations and modifications may be made without departing from the scope of the present invention. Therefore, it should be understood that the technical contents related to the deformation and application which can be easily derived from the embodiments of the present invention are included in the present invention.

1: rotary cutting 2: C-plate
10: Part 1 11: Installation equipment
20: Part 2 30: Part 3
40: fourth part 41: shock absorber
50: Flange
100: Rotary cutting 110: Rotary table interface
111: Rotary table interface 111a: Insertion hole
111b: step 112:
113: lifting lug 120: guide tube
121: flange 130: shock damping part
131: stopper 132: cover plate
132a: drain plug 133: shock damper
140: Se-fixing clamp

Claims

A rotary table interface unit installed on a rotary table of an offshore structure;
An integral guide tube coupled to the rotary table interface and guiding the drill pipe; And
And an impact damper installed inside the guide tube for absorbing impact energy by the drill pipe,
Wherein the guide tube comprises:
A flange is provided at an upper end portion,
A rotary table interface unit coupled to the rotary table interface unit using the flange,
Wherein the shock-
A stopper formed at a portion spaced from the lower end of the guide tube by a predetermined distance; And
And a cover plate formed to be openable and closable at a lower end portion of the guide tube.

The method according to claim 1,
Further comprising a seed-fixing clamp mounted on at least one or more peripheral surfaces of the guide tube.

The apparatus of claim 1, wherein the rotary table interface unit comprises:
A rotary table interface installed at an upper portion of the rotary table;
A support unit installed on a lower surface of the rotary table interface for supporting the rotary table interface and the outer circumferential surface of the guide tube; And
And a plurality of lifting lugs provided on the upper surface of the rotary table interface.

The system of claim 3, wherein the rotary table interface comprises:
An inserting hole formed at a central portion, into which the guide tube is inserted; And
And a stepped portion formed on the edge portion and engaged with an edge portion of the rotary table.

delete

The apparatus according to claim 1, wherein the shock-
And a shock damper installed inside the guide tube through a lower end of the guide tube and seated in a state of maintaining a predetermined elasticity by the stopper and the cover plate.

7. The apparatus of claim 6, wherein the shock damper comprises:
Wherein the spring is a spring.