KR20150078903A - Drillship having a drain tank installed above an inner bottom deck - Google Patents

Abstract

A drillship having a separated drain tank is disclosed. According to the present invention, the drillship having a separated drain tank includes: a drain tank room provided in a void space between hold ballast tanks placed in a pool and at the stern of a ship; and a drain tank part spaced apart from the bottom of the drain tank room.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drill ship having a drain tank,

The present invention relates to a drill ship, and more particularly, to a drill ship in which a drain tank capable of utilizing a space provided by separating a drain tank from an inner bottom hull is disposed apart from the drill ship.

With the rapid development of international industrialization and industry, the use of earth resources such as oil is gradually increasing, and thus the stable production and supply of crude oil is becoming an increasingly important issue globally.

For this reason, recently marginal field or deep-sea oil development has been economically feasible, which has been neglected due to economic difficulties so far. Therefore, with the development of submarine mining technology, drilling facilities suitable for the development of such oilfields A drilling rig equipped with a hull has been developed.

Conventional submarine drilling has been mainly used for a rig ship or a fixed platform for underwater drilling which can be sailed only by other tugboats and which is used for drilling underwater at anchor point on the sea using a mooring device.

In recent years, however, drill ships and FPSO (Floating, Production, Storage and Offloading), which are manufactured in the same form as ordinary ships, have been developed to mount advanced drilling equipment and to navigate with their own power. Has been used for subsea drilling and production.

In order to develop small-scale oilfields, drilling rigs are designed to be able to navigate powerlessly without a tugboat, depending on the working conditions that need to be moved frequently.

1 is a side view schematically illustrating a drill ship according to an embodiment of the prior art.

As shown in Fig. 1, a drill water tank DW, a brine tank BT, a mud storage tank MT, a drain tank room DR, a bulk tank M4, Room (BR) are arranged in order.

The drain tank is provided in the drain tank room DR as shown in Fig. 1, and the bottom portion of the drain tank is provided in contact with the inner bottom hull. The drain tank room (DR) was classified as a hazardous area and could not be used for other purposes, and occupied a lot of space in the mid hold, which is the area between the fore and aft parts.

That is, the drain tank room is a place where a drain tank, which is a tank for temporary storage when the liquid generated in the facility can not be discharged as it is or when circulating, is installed. The area around the drain tank was classified as a hazardous area and could not be used for other purposes.

Further, the drain tank occupies a large area in the width direction of the hull, and the bottom surface of the drain tank is provided in contact with the inner bottom hull so that there is a clearance only in the upper portion of the drain tank and the forefront portion of the drain tank.

Therefore, access to the pump or other equipment during maintenance is not easy, especially in the upper region of the drain tank.

Further, the pipeline provided at the bottom of the drain tank room is provided in a straight line without bending considering the flow of the fluid flowing therein, so that it passes through the drain tank. That is, the arrangement of the pipeline becomes horizontal, and the structure penetrates the surrounding structure.

In this case, it is difficult to install the pipeline and there is a disadvantage in that additional air is required to prevent leakage from the penetrating tank.

Korean Patent Laid-Open Publication No. 2012-0003599 (Daewoo Shipbuilding & Marine Engineering) 2012.05.24.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a drill-in which a drain tank, which can utilize a void space in a peripheral area of a drum, and relocate a drain tank provided in a drain tank room, .

According to an aspect of the present invention, there is provided a drain tank room provided in a void space between a door ballast tank and a hold ballast tank disposed at a stern portion; And a drain tank part spaced apart from a bottom part of the drain tank room.

The drain tank portion includes a base spaced upward from the bottom portion; A drain tank provided in the base and storing a drain; And a drain holding tank provided in the base and stored before the drain stored in the drain tank is discharged outboard.

The drain tank may include a first drain tank in which a drain from at least one of a well test area, a drill floor, and a separator room is stored; And a second drain tank in which a drain from at least one of the drilling module, the mud module, the main deck, the drill pipe mount area, and the riser mount area is stored.

And a drain pump provided at the bottom of the drain tank room for pumping drain stored in the drain tank to the drain holding tank.

And a drill water tank provided between the drain tank room and the door frame.

And an access passage provided at a bottom portion of the drain tank room and provided as a passage accessible to an operator to a lower portion of the drain tank portion.

And a plurality of pipes provided in a peripheral region including a lower region and an upper region of the drain tank portion.

According to another aspect of the present invention, there is provided a drain tank room in an empty space between a hold ballast tank for holding a longitudinal center of gravity of a platform and a hull, and a drain tank is provided in the drain tank room The drill-up can be provided upwardly from the bottom of the drill-hole.

In the embodiments of the present invention, a drain tank room is provided in an empty space between the door and the stern, and the drain tank is spaced upward from the bottom of the drain tank room, It can be used as a maintenance space and the space utilization can be improved.

Further, since the piping line can be provided in the space secured in the lower portion of the drain tank portion, the piping can be easily arranged and the space for the access passage can be ensured.

1 is a side view schematically illustrating a drill ship according to an embodiment of the prior art.
2 is a side view schematically showing a drill ship in which a drain tank is spaced apart according to an embodiment of the present invention.
3 is an enlarged view of the area "A" in Fig.
4 is a view schematically showing a drain tank portion and a drain pump provided in the drain tank room in this embodiment.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 2 is a side view schematically showing a drill ship in which a drain tank is spaced apart according to an embodiment of the present invention, FIG. 3 is an enlarged view of an area "A" of FIG. 2, And a drain tank portion and a drain pump are provided in the drain tank room.

As shown in these figures, the drill ship 1 according to the present embodiment has a drain tank chamber (not shown) provided in a void space between the door drum M and the hold ballast tank HB disposed on the stern section, A drain tank 200 provided at the bottom of the drain tank room 100 and a drain disposed in the drain tank 220 at a bottom of the drain tank chamber 100, And a drill water tank 400 provided between the drain tank room 100 and the door M, as shown in FIG.

The drain tank room 100 is provided between the door frame M and the hold ballast tank HB as shown in Fig. The hold ballast tank (HB) is filled with seawater and serves to hold the vertical center of gravity of the hull.

Conventionally, the area between the door drum M and the hold ballast tank HB remained a void space except for both sides in the width direction of the ship (used as a ballast tank). The present embodiment can efficiently utilize the empty space by providing the drain tank room 100 in the empty space.

In addition, the present embodiment can utilize the space in which the drain tank room 100 is disposed as an installation place for a tank or the like provided on the upper part of the main deck. For example, conventionally, a high-pressure mud pump, an active mud pump, and the like are provided inside the mud module. In this case, the vertical center of gravity of the hull is increased, which may result in poor restoration and mobility.

However, in the present embodiment, the high-pressure mud pump and the active mud pump are disposed in the forward portion space of the door frame M secured by arranging the drain tank room 100 to the stern portion behind the door M, To improve the stability and motility.

2, the drain tank unit 200 is provided in the drain tank room 100 disposed at the rear of the door frame M and includes mud, oil, and wastewater flowing from a drill floor or main deck Is stored.

4, the drain tank unit 200 includes a base 210 spaced upward from the bottom of the drain tank 100, a drain 210 disposed on the base 210, And a drain holding tank 230 provided in the base 210 and stored before the drain stored in the drain tank 220 is discharged to the outside.

4, the base 210 is supported by a support frame coupled to the bottom of the drain tank room 100. In this embodiment, the drain tank 220 is provided on the base 210 when the ship is shaking. A plurality of stoppers may be provided to catch the object so as not to be detached.

The drain tank 220 is a tank in which drains in which particles having a large particle size are trapped are stored in a solid treatment tank 600 among drains introduced from a drill floor or main deck.

In this embodiment, the drain tank 220 includes a first drain tank 211 and a second drain tank 212, as shown in FIG.

The first drain tank 211 may store drains from a well test area, a drill floor, a separator room, a mud process tank room, and a cutting dryer area. That is, in this embodiment, the drain that flows in the dangerous area may be stored in the first drain tank 211.

In the second drain tank 212, a drain that flows from the mud module, the drilling module, the main deck, the pyrex area, and the riser mounting area can be stored. That is, in this embodiment, the drain that flows in the non-hazardous area may be stored in the second drain tank 212.

The drain holding tank 230 is a place where the drain stored in the drain tank 220 is stored before being discharged outboard. In the present embodiment, the drain holding tank 230 also includes a drain tank 220, May be provided on the base 210 so as to be spaced apart from the bottom of the base 100.

The drain pump 300 pumps the drain stored in the drain tank 220 to the drain holding tank 230. In this embodiment, the drain pump 300 is connected to the drain tank 220 100).

Specifically, in the conventional pump, the drain tank is provided in contact with the bottom portion of the drain tank room 100, and the installation space is limited to the space of the upper side of the drain tank or the forward portion of the drain tank.

However, in this embodiment, since the drain tank 220 is spaced apart from the bottom of the drain tank room 100 and an additional space is provided in the lower portion of the drain tank 220, the drain pump 300 can be installed in this additional space have.

The pipe 500 connecting the drain tank 220 and the drain pump 300 and the drain pump 300 and the drain holding tank 230 may be disposed in the above-mentioned additional space.

Furthermore, the present embodiment can provide a drill water tank 400 in which drill water is stored during drilling, as shown in FIG. 2, between the drum M and the drain tank room 100 The pipe 500 connected to the drill water tank 400 can be installed through the additional space described above without having to penetrate the drain tank 220.

Meanwhile, in the present embodiment, as described above, the drill water tank 400 disposed between the conventional artwork M and the stern can be provided beside the drain tank room 100. In this embodiment, a tank having a similar function, that is, a tank in which liquid is stored, can be arranged close to each other to reduce the length of the pump line.

3, a hold ballast tank HB may be disposed behind the drain tank 200, and a drill water tank 400 may be disposed in front of the hold ballast tank HB. Although the drain tank unit 200 uses the discharge pump 300, since the sea water is stored in the hold ballast tank HB and the drill water tank 400, the same pump can be used.

At this time, if the drill water tank 400 and the hold ballast tank HB are disposed close to each other as in the present embodiment, the line length of the pump can be reduced.

Also, since the lower space of the drain tank 220 can be used without having to penetrate the drain tank 220 when connecting the lines with the pump, the line of the pipe 500 can be easily arranged.

In addition, the present embodiment can provide an access passage accessible to an operator in a lower region of the drain tank 220, and a waste oil tank 700 in which waste oil is stored under the drain holding tank 230 .

As described above, according to the present embodiment, the drain tank room is provided in the empty space between the door and the stern, and the drain tank is spaced upward from the bottom of the drain tank room, It can be used as a maintenance space for various equipments, thus improving the space utilization.

Further, since the piping line can be provided in the space secured in the lower portion of the drain tank portion, the piping can be easily arranged and the space for the access passage can be ensured.

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. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1: drill ship with drain tank spaced 100: drain tank room
200: drain tank part 210: base
220: drain tank 230: drain holding tank
300: exhaust pump 400: piping
500: Drill water tank 600: Solid treatment tank
700: waste oil tank BT: bulk tank room
HB: Hold ballast tank IH: Inner bottom hull
M:

Claims (8)

A drain tank room provided in a void space between the door ballast and the hold ballast tank disposed at the stern; And
And a drain tank portion spaced apart from a bottom portion of the drain tank room. The method according to claim 1,
The drain tank portion
A base disposed upwardly from the bottom portion;
A drain tank provided in the base and storing a drain; And
And a drain holding tank provided in the base, wherein the drain holding tank is stored before the drain stored in the drain tank is discharged outboard. The method of claim 2,
The drain tank
A first drain tank in which a drain from at least one of a well test area, a drill floor, and a water separator room is stored; And
And a second drain tank in which a drain from at least one of a drilling module, a mud module, a main deck, a drill pipe mount area and a riser mount area is stored. The method of claim 2,
And a drain pump provided at the bottom of the drain tank room for pumping the drain stored in the drain tank to the drain holding tank. The method according to claim 1,
Further comprising a drill water tank provided between the drain tank room and the toilet bowl. The method according to claim 1,
And an access passage provided at a bottom portion of the drain tank room and provided as a passage accessible to an operator to a lower portion of the drain tank portion. The method according to claim 1,
Further comprising a plurality of pipes provided in a peripheral region including a lower region and an upper region of the drain tank portion. A drain tank room is provided in an empty space between the hold ballast tanks for holding the longitudinal center of gravity of the hull and the hull and the drain tank is spaced upward from the bottom of the drain tank room Drill ship with.

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