KR102019266B1 - Cutting chute assembly for submersible rig and the cutting treatment system for submersible rig with this - Google Patents

Abstract

The present invention is provided in each of the plurality of shale shakers (shale shaker) and has an inner space that gradually narrows toward the lower side, the WBM outlet and the oil discharged water-based mud (hereinafter 'WBM') on the lower side, oil Cutting chutes each having an OBM outlet through which an oil based mud (OBM) is discharged; And a flipper unit pivotally mounted to the cutting chute to selectively open and close the WBM outlet and the OBM outlet to selectively discharge the WBM and OBM out of the cutting chute. Regarding the cutting chute assembly for semi-submersible rigs and the cutting processing system for semi-submersible rigs which are equipped with the selective processing of the base mud and oil-based mud, as well as the rapid and bulk processing of the oil-based mud will be.

Description

CUTTING CHUTE ASSEMBLY FOR SUBMERSIBLE RIG AND THE CUTTING TREATMENT SYSTEM FOR SUBMERSIBLE RIG WITH THIS

The present invention relates to a cutting chute assembly for a semi-submersible rig and a cutting processing system for a semi-submersible rig equipped with the same, more particularly for the selective treatment of water-based and oil-based muds, as well as oil-based muds. The present invention relates to a cutting chute assembly for a semi-submersible rig and to a cutting processing system for a semi-submersible rig provided therewith.

Recently, submersible rigs and drillships have been spotlighted as a type of ships used for deep sea drilling, and the semi-submersible rigs have a smaller area of contact with water than drillships, so they are less affected by waves. Because of the small vertical movement, the vertical movement is greatly reduced, so that the work can be carried out in a sea of severe winds, and since the drillship is manufactured in a ship form, it can work in a deeper water than a semi-submersible rig.

In these semi-submerged rigs or drillships, the mud is used as a coolant to cool the drill bit, sometimes as a lubricant to make the drilling smooth, and as a carrier for cutting. mud), which is very expensive, and it is essential to use a system that separates the cutting included in the mud recovered after the drilling operation and reprocesses it.

Here, the water based mud (WBM) does not interfere directly with the hull, but the oil based mud (OBM) has no risk of seawater contamination if thrown directly outside the hull. Therefore, a separate treatment procedure must be carried out to remove oil impurities in the hull.

That is, the WBM may be processed by a cutting chute made of a hull structure, but the OBM is sent to a treatment facility for removing oil impurities through a conveyor provided separately.

However, the cutting chute used to handle the WBM used so far is installed through three decks, the overall weight of the hull increases, the space utilization is low, and the processing speed of the OBM to process the OBM through the conveyor alone It was difficult to meet the demands of consumers who wanted to recycle mud quickly in large quantities.

The present invention has been invented to improve the above problems, and provides a cutting chute assembly for a semi-submersible rig which can selectively process water-based mud and oil-based mud and a cutting processing system for a semi-submersible rig having the same. It is to.

In addition, the present invention is to provide a cutting chute assembly for a semi-submersible rig and a cutting processing system for a semi-submersible rig which is provided to enable to process oil-based mud quickly and in large quantities.

In addition, the present invention is to provide a cutting chute assembly for a semi-submersible rig and a cutting treatment system for a semi-submersible rig provided with it to minimize the waste of unnecessary materials to improve the processing capacity while increasing the space utilization. .

In order to achieve the above object, the present invention is provided in each of the plurality of shale shakers (shale shaker) and has an inner space gradually narrowed toward the lower side, water-based mud (hereinafter 'WBM') Cutting chute each having a WBM outlet through which is discharged) and an OBM outlet through which an oil based mud (OBM) is discharged; And a flipper unit pivotally mounted to the cutting chute to selectively open and close the WBM exit and the OBM exit to selectively discharge the WBM and OBM out of the cutting chute. Cutting chute assemblies for submerged rigs can be provided.

The WBM outlet may be connected to the WBM discharge pipe connected toward the outside of the hull.

The OBM outlet may be connected to a cutting blower for transferring the OBM discharged through the cutting chute to an oil processing apparatus.

The flipper unit includes a first pipe connected to the WBM outlet and inclined to the lower front surface of the cutting chute, a second pipe connected to the OBM outlet and extended to the bottom of the cutting chute, and embedded in the cutting chute. A rotation shaft disposed between the inlet of the first pipe and the second pipe and capable of forward and reverse rotation, built into the cutting chute, coupled to the rotation shaft, and selectively selecting the first pipe and the second pipe. It may include a flipper that can be opened and closed.

The flipper unit may be mounted inside the front surface of the cutting chute and connected to an end portion of the flipper rotated to seal the first pipe or the second pipe to form a flow path toward the first pipe or the second pipe side. A first guide, a second guide mounted inside the rear lower portion of the cutting chute and inclined downward toward the second pipe side, and guiding the flow of the OBM to the second pipe side; and a lower side of the pivot shaft. It may further include a third guide which is disposed in the partition between the inlet of the first pipe and the second pipe, the inclined downward toward the front surface of the cutting chute.

Also in accordance with another aspect of the invention, a plurality of shale shakers connected to a flow divider; WBM outlet connected to the shale shaker and having an inner space gradually narrowing toward the lower side, water-based mud (WBM) is discharged to the outside of the hull, oil-based mud And an OBM outlet through which 'OBM' is discharged, respectively, and a cutting chute assembly for selectively discharging the WBM and the OBM; A cutting conveyor connected to the OBM outlet and transporting the discharged OBM to a container for cutting processing; And a cutting blower disposed between the cutting conveyor and the container and blowing the OBM into the container. The cutting processing system for a semi-submersible rig is provided with a cutting chute assembly for a semi-submersible rig. Can be.

The flow distributor, the shale shaker, the cutting chute assembly, the cutting conveyor, and the cutting blower may include an upper deck, a mezzanine deck, and a roof deck of the hull, which are sequentially disposed. The cutting chute assembly may be disposed on a support structure, and the cutting chute assembly may be mounted on the bottom of the mezzanine deck and disposed between the mezzanine deck and the upper deck.

The flow distributor may be disposed between the roof deck and the mezzanine deck, and the shale shaker may be mounted on an upper surface of the mezzanine deck.

The shale shaker may be mounted on an upper surface of the mezzanine deck, and the cutting conveyor may be disposed in front of the shale shaker and the cutting chute assembly and may be mounted at an upper front of the cutting chute assembly.

The cutting conveyor may further include a pair of transfer screws disposed along the length direction and capable of selective operation such that all or a portion of the cutting conveyor is driven.

According to the present invention having the above configuration, the following effects can be achieved.

First, the present invention is provided with a flipper unit in the cutting chute to selectively process not only the WBM but also the OBM.

In addition, the present invention can quickly process a large amount of OBM by connecting the cutting blower to the cutting chute compared to the conventional cutting chute structure.

In addition, the present invention according to the structure as described above significantly reduces the volume compared to the existing cutting chute to reduce the overall weight also to minimize the waste of unnecessary materials, easy maintenance management, such as cleaning, as well as cutting equipment Various spaces in the support structure on the hull can be utilized.

In addition, the present invention may provide a pair of transfer screws capable of selectively or partially operating the cutting conveyor, so that flexible handling may be performed according to the driving situation of the shale shaker connected to the cutting chute assembly, thereby minimizing unnecessary driving energy.

In addition, the present invention by placing the cutting conveyor between the shale shaker and the cutting chute assembly to reduce the unnecessary movement of the operator, significantly shortening the unnecessary mud transfer path it is possible to use the efficient space.

1 is a conceptual view showing a part of a supporting structure equipped with a cutting chute assembly for a semi-submersible rig according to an embodiment of the present invention
2 is a side cross-sectional conceptual view seen from a point A of FIG.
3 is a conceptual diagram schematically showing a cutting treatment system for a semi-submersible rig having a cutting chute assembly for a semi-submersible rig according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a conceptual view showing a part of a supporting structure mounted with a cutting chute assembly for a semi-submersible rig according to an embodiment of the present invention, Figure 2 is a side cross-sectional conceptual view seen from the point A of FIG.

As shown in the drawing, it can be understood that the flipper unit 300 is mounted on the cutting chute 200 connected to the shale shaker 100.

Shale shaker 100 is a plurality of equipment connected to the flow divider (400, flow divider), by applying a vibration to the mud recovered from the diver (diverter, hereinafter not shown) to separate and discharge the WBM or OBM.

The cutting chute 200 is provided in each of the shale shakers 100 and has an inner space that gradually narrows toward the lower side, and a WBM outlet 201 through which a water based mud (hereinafter referred to as 'WBM') is discharged. And OBM outlets 202 through which oil based muds (OBMs) are discharged.

The flipper unit 300 selectively opens and closes the WBM outlet 201 and the OBM outlet 202 so that the WBM and OBM may be selectively mounted on the cutting chute 200 to be discharged to the outside of the cutting chute 200.

Therefore, the present invention can selectively process not only the WBM but also the OBM using the cutting chute 200.

The present invention can be applied to the above-described embodiment, and of course, the following various embodiments can be applied.

First, the WBM outlet 201 is connected to the WBM discharge pipe 201 'which is connected toward the outer side of the hull for the treatment of the WBM.

The OBM outlet 202 is connected to a cutting blower 500 for transferring the OBM discharged through the cutting chute 200 to an oil processing apparatus (hereinafter, not shown).

The cutting blower 500 serves to blow the OBM into a container (not shown).

As described above, the flipper unit 300 is provided in the cutting chute 200 to process not only the WBM but also the OBM. Referring to FIG. 2, the flipper unit 300 includes a rotation shaft disposed between the inlets of the first and second pipes 301 and 302. 310 and a flipper 320 mounted on the pivot shaft 310 may be understood.

The first pipe 301 is connected to the WBM outlet 201 and inclined to the lower front surface of the cutting chute 200, the second pipe 302 is connected to the OBM outlet 202 and the bottom of the cutting chute 200 Extends.

The rotating shaft 310 is built in the cutting chute 200 and is disposed between the inlet of the first pipe 301 and the second pipe 302 so as to be capable of forward and reverse rotation.

Rotating shaft 310 may be further provided with a handle to be connected to the outside of the cutting chute 200 to enable forward, reverse rotation operation of the rotating shaft 310, the handle is a manual operation or an actuator of the operator It is also possible to automatically open and close operation by controller.

The flipper 320 is embedded in the cutting chute 200, coupled to the rotation shaft 310, and selectively opens and closes the first pipe 301 and the second pipe 302.

Here, the flipper unit 300 is mounted inside the front surface (left side of FIG. 2) of the cutting chute 200 to be inclined downward toward the second pipe 302 side, and the first pipe 301 or the second pipe ( And a first guide 331 connected to an end of the flipper rotated to seal the 302 to form a flow path toward the first pipe 301 or the second pipe 302.

In the present embodiment, as shown in FIG. 2, an angle AN is provided at an upper portion of the first guide 331. The angle AN reinforces the cutting chute 200, and the first guide 331 also prevents the mud from escaping into the gap between the flipper 320 and the inner wall of the cutting chute 200.

Then, the flipper unit 300 is mounted inside the bottom of the rear surface (right side of FIG. 2) of the cutting chute 200 to be inclined downward toward the second pipe 302 side, and the OBM of the OBM toward the second pipe 302 side. It further includes a second guide 332 which induces flow and prevents the mud from accumulating in the corners of the cutting chute 200.

In addition, the flipper unit 300 is disposed on the lower side of the rotation shaft 310, partitions between the inlet of the first pipe 301 and the second pipe 302, and downwards toward the front surface of the cutting chute 200. It further includes a third guide 333 formed to be inclined.

Therefore, when the flipper 320 is in the position indicated by the solid line in FIG. 2, a flow path through which the OBM is discharged through the second pipe 302 is formed by the first guide 331 and the second guide 332.

In addition, when the flipper 320 rotates to a position indicated by a dotted line in FIG. 2, the WBM is discharged through the first pipe 301 together with the first guide 331 and the third guide 333 together with the flipper 320. It will form a flow path.

On the other hand, the present invention can provide a cutting treatment system for a semi-submersible rig with a cutting chute assembly (CA) for a semi-submersible rig as shown in FIG.

The present invention includes a shale shaker 100 connected to the flow distributor 400, a cutting chute assembly CA connected to the shale shaker 100, a cutting conveyor 600, and a cutting blower 500. It can be seen that the structure.

Shale shaker 100 is a plurality of equipment connected to the flow distributor 400, and to vibrate the mud recovered from the diverter to separate and discharge the WBM or OBM.

The cutting chute assembly CA is connected to the shale shaker 100 and has an inner space that gradually narrows toward the lower side, a WBM outlet 201 through which the WBM is discharged to the outside of the hull, and an OBM outlet through which the OBM is discharged. 202 is provided, respectively, to selectively discharge the WBM and OBM.

Although the cutting chute assembly CA is not particularly illustrated, the selective discharge of the WBM and the OBM may also be performed by the flipper unit 300 as in the embodiment of FIGS. 1 and 2.

That is, the WBM may be discharged to the outside of the hull through the WBM outlet 201 by the flipper unit 300, and the OBM may be transferred to the container (not shown) through the cutting blower 500.

The cutting conveyor 600 is connected to the shale shaker 100 and transfers the OBM discharged from the shale shaker 100 to the container 700 for cutting without passing through the cutting chute 200.

The cutting blower 500 is disposed between the cutting conveyor 600 and the container 700 and serves to blow the OBM discharged from the cutting chute 200 to the container.

Here, the flow distributor 400, the shale shaker 100, the cutting chute assembly (CA), the cutting conveyor 600 and the cutting blower 500 are the upper deck (910, upper deck) and mezzanine deck (920, hull) of the hull A mezzanine deck and a roof deck 930 are disposed in the sequentially arranged support structure 900.

At this time, the cutting chute assembly (CA) is mounted on the bottom surface of the mezzanine deck 920 is disposed between the upper deck 910 and the roof deck 930, it is significantly reduced in size and volume compared to the conventional cutting chute Able to know.

In addition, the flow distributor 400 may be disposed between the mezzanine deck 920 and the loop deck 930, and the shale shaker 100 may be understood to be mounted on the upper surface of the mezzanine deck 920.

In addition, the cutting conveyor 600 is disposed between the shale shaker 100 and the cutting chute assembly CA and is mounted on the upper front of the cutting chute assembly CA (the left direction in FIG. 3) so that unnecessary work of the user is performed. This will minimize the transfer of unnecessary mud and significantly shorten it.

In addition, the cutting conveyor 600 further includes a pair of feed screws 610 disposed along the length direction and capable of selective operation such that all or a part of the cutting conveyor 600 is driven, according to a driving condition of the shale shaker 100. 600 can be operated with a flexible operation, it is possible to minimize the waste of unnecessary driving energy.

A process of cutting using the semi-submersible rig cutting processing system according to the embodiment will be described with reference to FIGS. 3 and 4.

First, the mud movement path will be described when there is no deterioration of the mud recovered from the diverter and can be immediately reused.

That is, the mud recovered from the diver is recycled through a mud tank (not shown) provided in the hull via the ① flow distributor 400, ② the shale shaker 100.

Next, the processing and the movement path of the WBM in the mud recovered from the diverter will be described.

That is, the mud recovered from the diverter is passed through ①flow distributor 400, ②shale shaker 100, ③cutting chute assembly CA and WBM outlet 201, and 4) WBM discharge pipe 201 'outside the hull. Is discharged immediately.

In addition, the process and the movement path of the OBM in the mud recovered from the diverter will be described.

In the case of OBM, which is mainly composed of oil impurities, the mud recovered from the diverter is blown by (1) the flow distributor (400), (2) the shale shaker (100), and (3) the flipper unit (300) of the cutting chute assembly (CA)). After being transferred to 500, ④ is transferred to a container (not shown) by the cutting blower 500 to a treatment facility provided separately in the hull.

As described above, the present invention enables selective treatment of water-based mud and oil-based mud, and can process oil-based mud quickly and in large quantities, and improve processing capacity while increasing space utilization by minimizing waste of unnecessary materials. It will be appreciated that the present invention provides a cutting chute assembly for a semi-submersible rig and a cutting processing system for a semi-submersible rig provided therewith.

And, the present invention has been described through a limited embodiment and the drawings, the present invention is not limited to this, the technical idea of the present invention by the person skilled in the art to which the present invention belongs and the claims described below Various modifications and variations are possible within the scope of equivalents.

100: shale shaker
200: cutting suit
300: flipper unit
400: flow distributor
500: cutting blower
600: cutting conveyor
700: container

Claims (10)

Each of the plurality of shale shakers is provided with an inner space that gradually narrows toward the lower side, and has a water-based mud (WBM) exiting the lower side, and an oil-based mud ( cutting chutes each having an OBM outlet through which oil based mud (hereinafter referred to as 'OBM') is discharged; And
And a flipper unit pivotally mounted to the cutting chute to selectively open and close the WBM exit and the OBM exit to selectively discharge the WBM and OBM out of the cutting chute.
The flipper unit,
A first pipe connected to the WBM outlet and inclined to the lower front surface of the cutting chute;
A second pipe connected to the OBM outlet and extending to the bottom of the cutting chute;
A rotating shaft embedded in the cutting chute and disposed between the inlet of the first pipe and the second pipe and capable of forward and reverse rotation;
A flipper built in the cutting chute and coupled to the pivot shaft, the flipper selectively opening and closing the first pipe and the second pipe;
A first guide mounted inside the front surface of the cutting chute and connected to an end portion of the flipper rotated to seal the first pipe or the second pipe to form a flow path toward the first pipe or the second pipe side;
A second guide mounted inside the rear lower portion of the cutting chute to be inclined downward toward the second pipe side to guide the flow of the OBM to the second pipe side;
Semi-submersible, characterized in that it is disposed on the lower side of the rotating shaft, partitioning between the inlet of the first pipe and the second pipe, and is formed to be inclined downward toward the front of the cutting chute Cutting chute assembly for rig. The method according to claim 1,
The WBM outlet is semi-submersible rig cutting chute assembly, characterized in that connected to the WBM discharge pipe connected toward the outside of the hull. The method according to claim 1,
The OBM exit,
Cutting chute assembly for a semi-submersible rig characterized in that it is connected to a cutting blower (cutting blower) for transferring the OBM discharged through the cutting chute to the oil processing device side. delete delete A plurality of shale shakers coupled to a flow divider;
WBM outlet connected to the shale shaker and having an inner space gradually narrowing toward the lower side, water-based mud (WBM) is discharged to the outside of the hull, oil-based mud And an OBM outlet through which 'OBM' is discharged, respectively, and a cutting chute assembly for selectively discharging the WBM and the OBM;
A cutting conveyor connected to the OBM outlet and transporting the discharged OBM to a container for cutting processing; And
And a cutting blower disposed between the cutting conveyor and the container to blow the OBM into the container.
The flow distributor, the shale shaker, the cutting chute assembly, the cutting conveyor and the cutting blower,
The upper deck of the hull, the mezzanine deck and the roof deck are arranged in a supporting structure arranged sequentially,
And the cutting chute assembly is mounted on the bottom of the mezzanine deck and disposed between the mezzanine deck and the upper deck. delete The method according to claim 6,
The flow distributor is disposed between the loop deck and the mezzanine deck,
The shale shaker is a semi-submersible rig cutting processing system with a cutting chute assembly for a semi-submersible rig, characterized in that mounted on the upper surface of the mezzanine deck. The method according to claim 6.
The shale shaker is mounted on an upper surface of the mezzanine deck,
The cutting conveyor is disposed in front of the shale shaker and the cutting chute assembly, the cutting processing system for a semi-submersible rig with a cutting chute assembly for a semi-submersible rig, characterized in that mounted on the upper front of the cutting chute assembly. . The method according to claim 9,
The cutting conveyor,
A cutting treatment system for a semi-submersible rig with a cutting chute assembly for a semi-submersible rig, further comprising a pair of feed screws disposed along the longitudinal direction and capable of selective operation such that all or part thereof is driven.

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