KR101056062B1 - How to load and transport risers or drill pipes on rigs and rigs with transverse pipe loading - Google Patents

Abstract

The present invention relates to a drilling vessel having a transverse pipe loading method and a method for loading and transporting a riser or drill pipe in a drilling vessel. The drilling line includes a riser or drill pipe loaded in the width direction of the drilling line in the riser or drill pipe loading space; A catwalk disposed in the longitudinal direction of the drilling line adjacent to the riser or the drill pipe loading space, and having a conveyor and a turntable installed at an upper portion thereof; A crane for transferring a riser or drill pipe to a turntable from the riser or drill pipe loading space; And a drill floor connected to the catwalk and installed with a derrick, wherein the riser or the drill pipe is transferred to the turntable by a crane, rotated, and then transferred to the drill floor by the conveyor.

According to the present invention, by arranging the drill pipe in the width direction of the drilling line and arranging cement processing facilities or mud processing facilities on the left and right sides of the catwalk, the space of the drilling line can be used more efficiently, and thus the overall length of the drilling line can be reduced. There is an advantage.

Drill ship, Drill pipe, Width direction, Turntable, Conveyor, Catwork, Crane

Description

Oil prospecting ship having transverse pipe racking system and method for stacking and conveying a riser or a drill pipe in an oil propecting ship}

The present invention relates to a drilling vessel having a transverse pipe loading method and a method for loading and transporting a riser or drill pipe in a drilling vessel. More specifically, the present invention relates to a method of loading and transporting a riser or a drill pipe in a drilling vessel and a drilling vessel having a transverse pipe loading method in which the drill pipe is disposed in the width direction of the drilling vessel to increase the space usage efficiency of the drilling vessel.

As the international rapid industrialization and industry develop, the use of global resources such as petroleum is gradually increasing, so that stable production and supply of oil is becoming a very important problem at the global level.

For this reason, the development of marginal fields and deep-field oil fields, which have been neglected in recent years due to lack of economic feasibility, has become economic. Therefore, along with the development of seabed mining technology, a drilling vessel equipped with drilling equipment suitable for the development of such an oil field has been developed.

Conventional subsea drilling is mainly used for rig ship or fixed platform dedicated to subsea drilling, which can be sailed only by other tugboats and anchored at one point of the sea using mooring devices. Recently, so-called drill ships, which are manufactured in the same form as general ships so that they can be sailed by their own power and equipped with advanced drilling equipment, have been developed and used for subsea drilling.

In the center of a rig ship or a drilling ship (hereinafter referred to as a drilling ship) equipped with various drilling equipments to drill oil or gas existing in the basement of the seabed, a riser for drilling oil or gas existing in the basement of the seabed Or a moonpool is formed so that a drill pipe can be moved up and down.

1 is a side view showing a conventional drilling vessel performing drilling operation at sea level.

The operator advances the riser 4 and the drill pipe 5 downward through the door pool 3 formed in the center of the drilling line to place a well located on the rock 12 below the sea bed 6. Drill undersea resources stored in 13).

The riser 4 is a member that is advanced to the bottom of the sea floor 6 before advancing the drill pipe 5 to the well 13, thereby preventing the drill pipe 5 from being exposed to seawater. When the riser 4 is installed, the drill pipe 5 is advanced downwardly to the well 13 through the seabed layer 11 into the riser 4.

As described above, when the riser 4 is advanced downward to the sea bottom 6 or when the drill pipe 5 is advanced to the oil well 13, the riser 4 or the drill pipe 5 which is connected to the long side is advanced downward. Rather, the short riser 4 or the drill pipe 5 are connected to each other and advanced downward. The bottom bottom 6 is provided with a blowout preventer (BOP) 7 to prevent abnormal high pressure from rising up the drill pipe 5. In the subsea layer 11, the casing 8 is fixed by cement, and then the seabed resources are drilled by inserting the drill pipe 5 equipped with the drill bit 10 into the casing. The mud 9 is inserted into the drill pipe 5 to prevent the drill bit 10 from overheating by the heat generated when the drill bit 10 drills the ground and to lubricate to make drilling easier. do. This mud exits through the drill bit 10 and is filled in the casing 8. When the drilling operation is finished, the drill pipe 5 is transported to the drill floor through the door pool 3, dismantled and then transported to the loading site.

2 is a plan view showing a state in which a riser or a drill pipe (hereinafter, referred to as a drill pipe) is loaded on an upper deck of a drilling line in the related art. 3 is a view showing a conventional drill pipe gripping by the top drive.

A derrick is formed on the drill floor 14. The door pool 3 is provided in the center of the drill floor 14, and the catwalk 15 extends from the drill floor 14. As shown in FIG. On both sides of the catwalk 15, the drill pipe 5 is loaded on the upper deck 16 in the longitudinal direction of the drilling line. The loaded drill pipe 5 is transported by the crane 17 to the conveyor 18 on the upper part of the catwalk 15 and then gripped by the top drive 20 to the seabed through the door pool 3. Lowered.

The crane 17 lifts the drill pipe 5 and moves it along the rails 19a and 19b in the width direction of the drilling line and rests on the catwalk 15. The rails 19a of the rails 19a and 19b farther from the drill floor 14 are installed on the upper deck 16, but the rails 19b adjacent to the drill floor 14 are upper decks 16. When installed above, since the crane 17 interferes with various equipment in the process of moving and hinders the movement of the equipment, it is supported by a plurality of support structures 23 and is installed in the air 10m or more from the catwalk 15. This type of crane is commonly referred to as a semi gantry type crane.

In this semi-gantry crane, when the drill pipe (5) is gripped by the top drive 20 and erected vertically, when the installation height of the rail (19b) is low, the drill pipe (5) having a length of 9 m is erected. Interference may occur with the rail 19b above the catwalk 15. Therefore, the crane 17 and the rail 19b should be installed 10m or more from the upper portion of the catwalk 15. In addition, a plurality of support structures 23 for supporting the rails 19b must be installed on the upper deck 16. In the drilling rig, where it is very important to reduce the overall weight of the structure, the support structure 23 supporting such a high crane 17 and the rail 19b becomes a factor to increase the weight of the structure. In addition, the plurality of support structures 23 installed adjacent to the drill floor 14 side are factors that hinder the movement and free placement of various equipment in a narrow space adjacent to the drill floor 14.

In addition, since various facilities and equipment are arranged at an upper portion of the drill floor 14 and adjacent to each other, the cement processing facility 21 or the mud processing facility 22 is usually adjacent to the drill floor 14 to form an upper deck ( It is arranged in the lower portion of 16) or in the space under the catwalk (15). Since the cement treatment facility 21 or the mud treatment facility 22 is one of the most frequently used facilities during the drilling operation, the cement treatment facility 21 or the mud treatment facility 22 is disposed adjacent to the drill floor 14 to simplify the transfer path for convenient transfer of cement or mud. It is more important than anything. However, conventionally, it is difficult to secure a suitable space for arranging such a cement treatment plant 21 or a mud treatment plant 22 adjacent to the drill floor 14, so that the cement or mud is transported through a complicated path. It took a lot of time.

Therefore, the present invention has been invented in view of the above circumstances, and the drill pipe is arranged in the width direction of the drilling vessel, and the cement treatment facility or the mud treatment facility is arranged on the left and right sides of the catwalk to increase the space usage efficiency of the drilling vessel. There is a purpose. In addition, the purpose is to reduce the total weight of the structure by lowering the installation height of the crane and by omitting a separate heavy structure for supporting the crane support structure located on the drill floor side.

Drilling line having a transverse pipe loading method according to an aspect of the present invention, riser or drill pipe mounted in the width direction of the drilling line in the riser or drill pipe loading space; A catwalk disposed in the longitudinal direction of the drilling line adjacent to the riser or the drill pipe loading space, and having a conveyor and a turntable installed at an upper portion thereof; A crane for transferring a riser or drill pipe to a turntable from the riser or drill pipe loading space; And a drill floor connected to the catwalk and installed with a derrick, wherein the riser or the drill pipe is transferred to the turntable by a crane, rotated, and then transferred to the drill floor by the conveyor.

In addition, the crane is characterized in that installed on the rail disposed in the longitudinal direction on the upper deck of the drilling vessel.

In addition, the longitudinal side of the catwalk is characterized in that the support facilities used for drilling, including cement treatment facilities and mud treatment facilities are arranged.

Drilling line having a transverse pipe loading method according to another aspect of the present invention, riser or drill pipe mounted in the width direction of the drilling line in the riser or drill pipe loading space; A catwalk disposed in the longitudinal direction of the drilling line adjacent to the riser or the drill pipe loading space and having a conveyor installed at an upper portion thereof; A crane for transferring a riser or a drill pipe to a conveyor side from the riser or drill pipe loading space; A drill floor connected to the catwalk and installed with a derrick, wherein the riser or drill pipe is rotated by 90 ° in a lifted state by a crane and then transferred to a conveyor on the upper portion of the catwalk, and by the conveyor It is characterized by being conveyed to the floor.

In addition, the drilling line further comprises a cantilever-shaped extension deck extending in the width direction of the drilling line, when the width direction of the drilling line is shorter than the length required for loading and transport of the riser or drill pipe, the width of the drilling line is It is characterized by extending by the cantilever type extension deck.

In addition, the drilling vessel is characterized in that the floating offshore structure including a drillship, semi-submersible drilling vessel, the tension leg platform.

In the method of loading and transporting the riser or drill pipe in the drilling vessel of the present invention, the riser or drill pipe is loaded in a state lying in the width direction of the drilling vessel, the riser or drill pipe is disposed in the longitudinal direction on the upper deck of the drilling vessel It is moved to the side of the catwalk by a crane installed on the rail, which is rotated by the turntable, characterized in that it is conveyed to the drill floor by using a conveyor.

In addition, a catwalk is disposed in the longitudinal direction of the drilling line adjacent to the loaded riser or drill pipe loading space, and the riser or drill pipe is transferred to the turntable above the catwalk by the crane, and then rotated by 90 °. It is characterized by being conveyed to the drill floor side by a conveyor.

According to the present invention, by arranging the drill pipe in the width direction of the drilling line and arranging cement processing facilities or mud processing facilities on the left and right sides of the catwalk, the space of the drilling line can be used more efficiently, and thus the overall length of the drilling line can be reduced. There is an advantage. In addition, the installation height of the crane can be lowered, and a separate heavy structure for supporting the crane support structure located on the drill floor side can be omitted, and the overall weight of the structure can be reduced by reducing the length of the catwalk by about half. There is an advantage.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. The same reference numerals in the drawings denote like elements throughout the drawings.

4 is a plan view illustrating a method of arranging a riser or drill pipe loading space, a crane, a turntable, a catwalk, a drill floor, a cement processing facility, and a mud processing facility according to the present invention. 5 is a view showing a state in which the drill pipe is rotated by 90 ° after being seated on the turntable. Figure 6 is a side view showing the drill pipe gripped by the top drive in the present invention.

Referring to FIG. 4, the drill pipe 5 is loaded in the loading space 30 in the width direction of the drilling line.

The catwalk 25 is disposed adjacent to the loading space 30 in front of the loading space 30. The turntable 26 and the conveyor 27 are installed above the catwalk 25.

Outside the loading space 30, the rail 39 is disposed on the upper deck 16 in the longitudinal direction of the drilling line, the crane 37 is moved along the rail 39. In the present invention, the crane 37 may be a general gantry crane.

The crane 37 transfers the drill pipe 5 loaded in the loading space 30 to the turntable 26 above the catwalk 25. Referring to FIG. 5A, the drill pipe 5 is transferred to the turntable 26 by a crane 37. Next, referring to FIG. 5B, the drill pipe 5 is rotated 90 ° by the turntable 26 and seated on the conveyor 27 above the catwalk 25.

On the contrary, the drill pipe 5 is rotated by 90 ° in the lifted state by the crane 37 without using the turntable 26 on the upper portion of the catwalk 25 and then moved to the catwalk 25 side. It may be transferred to the drill floor 14 side by the conveyor 27.

Referring to FIG. 6, the drill pipe 5 is transported on the conveyor 27 and gripped by the top drive 20 installed above the drill floor 14 to be lowered to the seabed through the door pool 3.

Cement treatment facility 41 is disposed on one side of the catwalk (25). The mud treatment facility 42 is disposed on the other side of the catwalk 25. On both sides of the catwalk 25, other supporting facilities used for drilling may be disposed in addition to the cement treatment facility and the mud treatment facility.

In general, when the length of the drill pipe 5 is 9 m and includes the length for installing the rail 39 to which the crane 37 moves, the width in the width of the drilling line should be 10 m or more so that the drill pipe 5 can be removed. It can arrange | position in the width direction of a drilling line. However, when the widthwise distance is less than 10m along the drilling line, the cantilever extension deck 40 extending in the width direction of the drilling line is provided on both sides of the upper deck 16, and the drill pipe is placed on the extension deck 40. 5 or rail 39 may be arranged.

As described above, since the drill pipe 5 is loaded in the width direction of the drilling line in the present invention, the length of the length of the drilling line for loading the drill pipe can be reduced to about 3m, compared with the conventionally required about 10m. have. Since the drill pipe 5 conveyed by the crane 37 is rotated by 90 ° by the turntable 26 installed above the catwalk 25, the length of the entire catwalk 25 is equal to the length of the drill pipe 5. The drill pipe 5 can be sufficiently supported by only about half, and the length of the catwalk 25 becomes possible about 5 m. Accordingly, the sum of the space for loading the drill pipe 5 and the length of the catwalk 25 is about 8 m. In addition, the cement treatment facility 41 and the mud treatment facility 42 are disposed on both left and right sides of the catwalk 25.

Conventionally, the cement treatment plant 21 or the mud treatment plant 22 is usually disposed below the upper deck 16 adjacent to the drill floor 14 or in a space below the catwalk 15 (see FIG. 2). In the present invention, the cement treatment facility 41 and the mud treatment facility 42 are disposed on both left and right sides of the catwalk 25.

Therefore, in the related art, about 10 m in the longitudinal direction of the ship was required only by the loading space of the drill pipe 5, but in the present invention, the loading space of the drill pipe 5, the cement treatment facility 41, and the mud treatment are about 8 m in length. Since the facility 42 can be arranged, the space usage efficiency of the drilling line can be increased to reduce the length of the drilling line.

In addition, in the present invention, since the rail 39 to which the crane 37 is moved is installed on the upper deck 16 in the longitudinal direction of the drilling line, the drill pipe 5 is transferred onto the conveyor 27 to drive the top drive. In the process of being gripped and erected by 20, it does not interfere with the rail 39 (see Fig. 6). Therefore, in the present invention, the crane 37 can be installed at a height of about 2m above the catwalk 25 while a general gantry crane is used.

In contrast, in the conventional crane 17, the rail 19b adjacent to the drill floor 14 side is installed across the drill floor 14 in front of the drill floor 14, so that the drill pipe 5 is top drive. The crane 17 and the rail 19b had to be installed at a height of about 10m above the catwalk 25 so as not to interfere with the rail 19b in the process of being gripped and erected by the 20 (see FIG. 3).

As such, in the present invention, since the height of the crane 37 can be greatly reduced as compared with the related art, the weight of the structure can be reduced by the height. In addition, since the support structure 23 for supporting the rail 19b positioned above the catwalk 15 is not necessary, the weight of the structure can be reduced. In addition, in the present invention, the rail 39 of the crane 37 is installed on the upper deck 16 in the longitudinal direction of the drilling line, and is not installed at the position adjacent to the drill floor 14. Thus, the arrangement and movement of the equipment installed adjacent to the drill floor 14 is free.

In addition, since the cement treatment facility 41 and the mud treatment facility 42 are disposed on the upper deck 16 adjacent to the drill floor 14, the transfer path for supplying the cement and the mud to the drill floor 14 is shortened. The processing time of cement and mud can be shortened dramatically.

In addition, support facilities used for drilling other than the cement treatment facility 41 and the mud treatment facility 42 may be disposed at both sides of the catwalk 15, thereby increasing space usage efficiency.

In addition, in the present invention, while the catwalk 25 of about 10 m in length is required, the drill pipe 5 can be transported only by the catwalk 25 of about 5 m in length, so that the entire catwalk 25 can be transferred. The length is reduced. Typically, the catwalk 25 is installed at a height that projects above the top of the loaded drill pipe 5, so that the overall weight of the catwalk 25 is increased in proportion to the length of the catwalk 25. Therefore, in the present invention, since the length of the catwalk 25 is reduced by about half as compared with the related art, the total weight of the catwalk 25 is reduced. Thus, it is possible to reduce the weight of the drilling line, which emphasizes the limitation on the total weight of the structure.

In the present invention, the drilling vessel does not only mean drillship, but also includes all the floating marine structures used in the seabed drilling, including a rig ship, a semi-submersible drilling ship, and a tension leg platform. Accordingly, the transverse pipe loading method of the present invention can be applied to all floating offshore structures including drillships, rig ships, semi-submersible drill ships, and tension leg platforms. In addition, while described above on the basis of a drill pipe, the drill pipe is meant to include a riser having a similar pipe shape.

It will be apparent to those skilled in the art that the present invention is not limited to the above embodiments and can be practiced in various ways without departing from the technical spirit of the present invention. will be.

1 is a side view showing a conventional drilling ship performing drilling operation at sea level.

Figure 2 is a plan view showing a state in which a conventional drill pipe is loaded on the upper deck of the drilling vessel.

3 is a view showing a conventional drill pipe is gripped by a top drive.

4 is a plan view illustrating a method of arranging a riser or drill pipe loading space, a crane, a turntable, a catwalk, a drill floor, a cement processing plant, and a mud processing plant according to the present invention;

5 is a view showing a state in which the drill pipe is rotated by 90 ° after being seated on the turntable.

Figure 6 is a view showing a drill pipe is gripped by the top drive in the present invention.

<Explanation of symbols for the main parts of the drawings>

3: moonpool

5: drill pipe

14: Drill Floor

16: upper deck

20: Top Drive

25: Catwalk

26: turntable

27: conveyor

30: loading space

37: crane

39: rail

40: extension deck

41: Cement Treatment Facility

42: Mud Treatment Facility

Claims (8)

A riser or drill pipe loaded in the riser or drill pipe loading space in the width direction of the drilling vessel; A catwalk disposed in the longitudinal direction of the drilling line adjacent to the riser or the drill pipe loading space, and having a conveyor and a turntable installed at an upper portion thereof; A crane for transferring a riser or drill pipe to a turntable from the riser or drill pipe loading space; A drill floor disposed in series with the catwalk and installed with a derrick, And the riser or drill pipe is transported to the turntable by a crane, rotated, and then drilled by the conveyor to the drill floor. The drilling vessel having a transverse pipe loading method according to claim 1, wherein the crane is installed on a rail disposed in a longitudinal direction on the upper deck of the drilling vessel. The drilling vessel having a transverse pipe loading method according to claim 1, wherein the longitudinal side of the catwalk is provided with support facilities for drilling, including cement processing facilities and mud processing facilities. A riser or drill pipe loaded in the riser or drill pipe loading space in the width direction of the drilling vessel; A catwalk disposed in the longitudinal direction of the drilling line adjacent to the riser or the drill pipe loading space and having a conveyor installed at an upper portion thereof; A crane for transferring a riser or a drill pipe to a conveyor side from the riser or drill pipe loading space; A drill floor disposed in series with the catwalk and installed with a derrick, The riser or drill pipe is rotated by 90 ° in a lifted state by a crane and then transferred to a conveyor on the upper portion of the catwalk, and a drilling vessel having a transverse pipe loading method, characterized in that it is transferred to the drill floor side by the conveyor. . The method according to any one of claims 1 to 4, wherein the drilling line further comprises a cantilevered extension deck extending in the width direction of the drilling line, When the widthwise distance of the drilling line is shorter than the length necessary for loading and conveying the riser or the drill pipe, the widthwise distance of the drilling line is extended by the cantilevered extension deck. . The method according to any one of claims 1 to 4, The drilling vessel is a drilling vessel having a transverse pipe loading method, characterized in that the floating offshore structure including a drillship, semi-submersible drilling vessel, the tension leg platform. In the method of loading and transporting a riser or drill pipe on a drilling vessel, The riser or drill pipe is loaded while lying in the width direction of the drilling vessel, The riser or drill pipe is moved to the side of the catwalk by a crane installed on a rail disposed in the longitudinal direction on the upper deck of the drilling line, rotated by a turntable and then transferred to the drill floor by using a conveyor. The method according to claim 7, wherein the catwalk is disposed in the longitudinal direction of the drilling line adjacent to the loaded riser or drill pipe loading space, The riser or drill pipe is transported by the crane to the turntable above the catwalk, and then rotated by 90 ° to the drill floor by a conveyor.

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