KR20150073234A - Drill ship having unit type derrick structure and drilling method using the unit type derrick structure - Google Patents

Drill ship having unit type derrick structure and drilling method using the unit type derrick structure Download PDF

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Publication number
KR20150073234A
KR20150073234A KR1020130159923A KR20130159923A KR20150073234A KR 20150073234 A KR20150073234 A KR 20150073234A KR 1020130159923 A KR1020130159923 A KR 1020130159923A KR 20130159923 A KR20130159923 A KR 20130159923A KR 20150073234 A KR20150073234 A KR 20150073234A
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South Korea
Prior art keywords
turntable
derrick
hull
drilling
drilling operation
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KR1020130159923A
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Korean (ko)
Inventor
문상원
김종립
이무열
이수호
김성수
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대우조선해양 주식회사
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Priority to KR1020130159923A priority Critical patent/KR20150073234A/en
Publication of KR20150073234A publication Critical patent/KR20150073234A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/04—Arrangement of ship-based loading or unloading equipment for cargo or passengers of derricks, i.e. employing ships' masts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Earth Drilling (AREA)

Abstract

The present invention relates to a drilling rig having a unitized derrick structure. Since the derrick structure is provided with a turret table-shaped derrick structure, the drill structure is rotated at 90 degrees during actual drilling operation, It is not necessary to form a hole in the bottom shell plating. Therefore, it is possible to improve the efficiency in terms of the hull resistance and to simplify the MOORING system and to reduce the capacity of the main engine Can be expected.
In addition, conventionally, when installing a ship structure and a derrick structure, productivity is deteriorated due to a lot of interference. However, when the technology of the present invention is introduced, most of the drilling equipment is unitized into a derrick structure, In particular, by including piping related equipment such as a mud system in a turntable derrick structure, the interface point can be greatly reduced.

Description

Technical Field [0001] The present invention relates to a drilling rig having a unitized derrick structure and a drilling method using the unitized derrick structure. [0002]

More particularly, the present invention relates to a drill rig that is provided with a plurality of derricks on a turntable rotatably installed on a main deck of a drill rig, rotates the turntable during drilling operation, arranges the derrick on both sides of the hull, A drill bit and a drilling method using the unitized derrick structure.

With the rapid development of international industrialization and industry, the use of earth resources such as petroleum is gradually increasing, and thus the stable production and supply of oil is becoming a very important issue on a global scale.

For this reason, development of the marginal heredity and deep-sea oil field, which had been neglected since the past due to inefficiency over land drilling, has become economical.

Therefore, along with the development of seabed mining technology, drilling rigs with drilling facilities suitable for the development of such oilfields have been developed.

Conventional submarine drilling has been mainly used for a rig ship or a fixed platform for underwater drilling which is capable of navigating only by another tugboat and performs submarine drilling with anchorage at a point in the sea using a mooring device. In recent years, a so-called drillship has been developed and installed in the same shape as a general ship so that it can be equipped with advanced drilling equipment and can navigate by its own power.

The drill ship is a vessel equipped with drilling facilities for oil field development. It has various drilling equipments to drill oil and gas which exist in the underground, and drilling oil and gas existing under the sea floor in the center of the hull. A generally rectangular opening is formed on the bottom of the Derrick lower hull of the drill ship to allow a riser or drill pipe to pass through the bottom of the sea floor.

In addition, a derrick, which is a structure for easily moving the drill pipe or the riser downward to the sea floor,

Around the derrick, there is a crane for lowering the drill pipe and risers from the top of the derrick to the bottom.

As an example of a conventional drillship, Korean Patent Laid-Open Publication No. 1999-28714 discloses an oil tanker-type hull having a wide space between a bow and a stern.

Derek joins the top of the drill ship infrastructure above the drapery, carries out major pipe works, and at the same time carries out secondary works of main pipe work through the portal. There are forward and backward thrusters and stern thrusters on the front and back of the drill ship, and a large number of cranes are installed around the derrick.

Conventionally, the drill ship has to have the hole structure on the bottom of the bottom shell to inevitably send pipes and drilling equipments to the wells, which results in inefficient efficiency in terms of hull resistance, and the hull and derrick (including drilling equipment) There are a lot of difficulties in drying due to a lot of interface points when loading in Yard, and there is a problem that space is narrow on top of main deck due to a lot of equipment.

Patent Publication No. 10-2012-0035989 Patent Publication No. 10-2012-0067710

In order to solve the above-described problems, the present invention has a united derrick structure, so that when drilling operation is performed, the derrick is rotated by 90 degrees and the drilling operation is performed outside both sides of the hull, There is no need to form a hole in the bottom shell, efficiency can be improved in terms of hull resistance, the mooring system can be simplified, the capacity of the main engine can be expected to be reduced, the interface problem can be solved, The object of the present invention is to provide a drilling rig having a unitized derrick structure capable of drastically reducing the number of interface points by incorporating piping related equipment into a turntable unit derrick structure, and a drilling method using the unitized derrick structure.

In order to achieve the above-mentioned object, the present invention provides a wind turbine comprising: a turntable rotatably mounted on a rotating shaft installed on a ship; A derrick installed at both upper portions of the turntable; A turntable turning unit for rotating the turntable at a predetermined angle during a drilling operation; And a turntable fixing unit for fixing the position of the turntable.

A circular guide rail is provided on the upper surface of the main deck of the hull, and a guide wheel supporting the turn table and moving along the guide rail may be installed on the lower surface of the turn table.

The turntable rotating unit includes: a circular gear formed on an outer circumferential surface of the rotating shaft; A drive motor gear box installed at a lower portion of the turntable; And a driving gear coupled to the rotary shaft of the driving motor gear box and meshing with the circular gear.

Wherein the turntable fixing unit comprises: a locking hole formed in a lower surface of the turntable; And a fixing member installed on the main deck of the hull to selectively engage with the locking hole.

According to another aspect of the present invention, Disposing derricks provided on both sides of the turntable in the direction of the hull forward; Locking the position of the turntable; Performing a drilling operation using the derrick; Releasing the position locking of the turntable after completion of the drilling operation; Rotating the turntable to return to its original position; And locking the position of the turntable. The drilling method using the unitized derrick structure is also provided.

When the derrick exists in the hull before drilling operation, the equipment required for drilling is used as the concept of storage, and when the drilling operation is performed, the space above the hull obtained by the rotation of the turntable can be utilized as a drilling operation space .

As described above, the present invention has a turret table-shaped derrick structure, so that when the actual drilling operation is performed, the derrick is rotated by 90 degrees and the drilling operation is performed outside both sides of the hull, It is not necessary to form a hole in the bottom shell plating. Therefore, efficiency is improved in terms of the hull resistance, and a reduction in the capacity of the main engine (MAIN ENGINE) can be expected as well as a simplification of the MOORING SYSTEM.

In the prior art, when the ship structure and the derrick structure are mounted, productivity is deteriorated due to a lot of interference. However, when the technology of the present invention is introduced, most of the drilling equipment is installed in a derrick structure, ). In particular, INTERFACE POINT can be greatly reduced by including piping related equipment such as MUD SYSTEM in a TURN TABLE structured derrick structure.

Further, since the present invention is clarified as a main shaft (rotation shaft) (main shaft) for rotating the derrick structure in which the hull and connection points are unitized, a fixing member for fixing the turntable, and a rail portion for smooth rotation , It is possible to prevent the problem of adding CARLING due to incompatibility between the derrick structure and the hull in the future.

In addition, conventionally, there is a lot of difficulty in layout designing on the upper part of the main deck in the past. However, when the technology of the present invention is applied, the space formed in the main deck Can be utilized. For example, if a derrick structure exists on the hull before drilling, the required equipment is used as a storage concept, and the space obtained by the rotation of the derrick structure during drilling can be utilized as a driving space.

1 is a perspective view of a drill rig having a unitized derrick structure according to a preferred embodiment of the present invention;
2 is a rear view of a drill rig having a unitized derrick structure according to a preferred embodiment of the present invention;
Figure 3 is a plan view of a drill rig having a united derrick structure in accordance with a preferred embodiment of the present invention.
Fig. 4 is an enlarged view of the main part of Fig. 2
5 is a view showing the configuration of the turntable rotating unit;
6 is a view showing the configuration of the turntable fixing unit
7 is a block diagram illustrating a drilling method using a united derrick structure according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a drilling rig having a unitized derrick structure according to a preferred embodiment of the present invention and a drilling method using the unitized derrick structure thereof will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a drilled structure having a unitized derrick structure according to a preferred embodiment of the present invention, FIG. 2 is a rear view showing a drilled structure having a unitized derrick structure according to a preferred embodiment of the present invention, 3 is a plan view showing a drill bit having a unitized derrick structure according to a preferred embodiment of the present invention, Fig. 4 is an enlarged view of the main part of Fig. 2, Fig. 5 is a view showing the structure of a turn table pivoting unit, Is a view showing a configuration of a turntable fixing unit.

Referring to FIGS. 1 to 6, a drill bit having a unitized derrick structure according to a preferred embodiment of the present invention is rotatably mounted on a rotating shaft (main shaft) 111 provided on a main deck 10 of a hull And has a turn table 110 installed therein.

A derrick 120 is installed on both sides of the turntable 110. Although not shown in the figure, the derrick 120 is provided with various equipment for drilling operation. Here, the unitized derrick structure means a structure in which the derrick 120 and the drilling equipment are modularized on the turn table 110.

A turn table rotating unit 130 for rotating the turntable 110 at a predetermined angle during a drilling operation is provided below the turntable 110.

The structure of the turntable turning unit 130 will be described below. A circular gear 131 is formed on the outer circumferential surface of the rotating shaft 111.

A drive motor gear box 132 is installed below the turntable 110. The drive motor gear box 132 is provided with a drive motor and a speed reducer (not shown).

A drive gear 134 is coupled to the rotation shaft 133 of the drive motor gear box 132 and meshed with the circular gear 131.

A turntable fixing unit 140 is provided between the turntable 110 and the main deck 10 in order to fix the position of the turntable 110.

The configuration of the turntable fixing unit 140 will be described below. The turntable fixing unit 140 includes a plurality of locking holes 141 formed on the lower surface of the turntable 110 and a plurality of locking holes 141 formed on the upper surface of the main deck 10 A fixing member 142 is provided.

The rod 143 of the fixing member 142 is configured to be coupled to or separated from the locking hole 141 while being raised and lowered by hydraulic pressure.

Although not shown in the drawing, the configuration of the turntable fixing unit 140 is defined as a concept including both the fixing member 142 and the locking hole 141, as well as other locking or locking structures.

The turntable 110 is preferably formed in a rectangular plate shape and is formed of a material such as a derrick 120 and steel to withstand the load of equipment related to drilling operation. May be equal to or smaller than the width (D).

The turntable is configured to pivot about a rotating shaft 111 with respect to the hull. Although not shown in the drawing, bearings are installed on the rotating shaft 111.

The shape of the turntable 110 is not limited to a rectangular plate-shaped body, but may be a circular plate shape. The derrick 120 is installed on both sides of the turntable 110, respectively.

Since the turntable 110 has a large load, facilities for supporting and guiding the turntable 110 should be installed below the turntable 110. A circular guide rail 150 is installed on the upper surface of the main deck 10 of the hull and supports the turn table 110 on the lower surface of the turn table 110 and moves along the guide rail 150 A guide wheel 160 may be installed.

A plurality of guide wheels 160 are disposed on the lower surface of the turntable 110 at predetermined intervals to disperse the load of the turntable 110. The guide wheels 160 may have a multi- Is preferable in terms of durability.

Meanwhile, FIG. 7 is a block diagram illustrating a drilling method using a united derrick structure according to a preferred embodiment of the present invention.

Referring to FIG. 7, a drilling method using a unitized derrick structure according to a preferred embodiment of the present invention includes rotating (S 110) a turn table 110; A step (S 120) of arranging the derrick 120 installed on both sides of the turntable 110 in the direction of the hull forward; Locking the position of the turntable 110 (S 130); A drilling operation (S 140) using the derrick 120; Releasing position locking of the turntable (110) after completing the drilling operation (S 150); Rotating the turntable 110 to return to its original position (S 160); And locking the position of the turntable 110 (S170).

Before the drilling operation, when the derrick 120 is present in the hull, the equipment required for drilling is used as a concept of storage. During the drilling operation, the open space of the upper portion of the hull obtained by the rotation of the turn table 110 is drilled It can be utilized as an OPERATION space.

Hereinafter, a drilling rig having a unitized derrick structure according to a preferred embodiment of the present invention and a drilling method using the unit derrick structure will be described in more detail as follows.

Before drilling, when Derek (120) is in the hull, he uses the drilling equipment as a storage concept. During the drilling operation, the turn table turning unit 130 is operated to rotate the turn table 110 by 90 degrees. That is, when the drive motor gear box 132 is driven, the rotational force of the drive motor gear box 132 is transmitted to the drive gear 134, which is then transmitted to the circular gear 131 coupled to the drive gear 134 , The turntable 110 rotates about the rotation axis 111 by 90 degrees.

Then, the turntable fixing unit 140 is operated to fix the position of the turntable 110. [ That is, the rod 143 of the fixing member 142 is moved up and down by the hydraulic pressure to be coupled to the locking hole 141, whereby the position of the turntable 110 is fixed.

The derrick 10 is disposed outside both sides of the hull so that the drilling operation is performed using the drilling equipment 120 through the derrick 120. At this time, the free space above the main deck 10 obtained by the rotation of the turntable 110 can be used as a drilling operation space. After completion of the drilling operation, the turn table 110 is rotated in the reverse order of the above-described operation so that the derrick 120 is positioned on the main deck 10.

As described above, according to the present invention, since the derrick structure having a turntable is provided, when the actual drilling operation is performed, the derrick is rotated by 90 degrees and drilling operations are performed outside both sides of the ship, It is not necessary to form a hole in the bottom shell plating. Therefore, efficiency is improved in terms of hull resistance, and the mooring system can be simplified, and the capacity of the main engine can be expected to be reduced.

In the prior art, when installing a ship and a derrick structure, productivity is deteriorated due to a lot of interference. However, when the technology of the present invention is introduced, most of the drilling equipment is installed in a derrick structure, In particular, by including piping-related equipment such as a mud system in a turntable unit derrick structure, the interface point can be greatly reduced.

Further, since the present invention becomes clear as a main shaft (rotation axis) for rotating the derrick structure in which the hull and connection points are unitized, a fixing member for fixing the turntable, and a rail portion for smooth rotation, It is possible to prevent the problem of addition of CARLING and the like because the hull does not fit.

In addition, conventionally, there is a lot of difficulty in designing the upper part of the main deck in the layout of the main deck. However, when the technology of the present invention is applied, a space formed in the main deck Can be utilized. For example, if a derrick structure is present on the hull before drilling operation, the necessary equipment is used as a storage concept, and the space obtained by rotation of the derrick structure during drilling can be utilized as a driving space.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Various modifications and variations are possible within the scope of equivalents.

10: Main deck
111: rotating shaft (main shaft)
110: Turn table
120: Derrick
130: Turn table rotating unit
131: Circular gear
132: Drive motor gear box
132: rotation axis of the gear box
134: drive gear
140: Turn table fixing unit
141: Locking hole
142: Fixing member
150: circular guide rail
160: Guide wheel
D: Main deck width
d: width of the turntable

Claims (7)

A turntable rotatably mounted on a rotating shaft installed on a ship;
A derrick installed at both upper portions of the turntable;
A turntable turning unit for rotating the turntable at a predetermined angle during a drilling operation; And
And a turntable fixing unit for fixing the position of the turntable. The method according to claim 1,
Wherein a circular guide rail is provided on the upper surface of the main deck of the hull and a guide wheel supporting the turntable and moving along the guide rail is installed on the lower surface of the turntable. Drill. The method according to claim 1,
The turntable rotating unit includes: a circular gear formed on an outer circumferential surface of the rotating shaft;
A drive motor gear box installed at a lower portion of the turntable;
And a drive gear coupled to the rotational axis of the drive motor gear box and meshing with the circular gear. The method according to claim 1,
The turntable fixing unit
A locking hole formed on a lower surface of the turntable;
And a fixing member installed on the main deck of the hull to selectively engage the locking hole. The derrick is provided on both sides of the turntable rotatably installed on the hull and the drilling operation is performed in a state in which the derrick is disposed outside the hull by rotating the turntable at a predetermined angle during drilling operation A drill ship with a unitized derrick structure. Rotating the turntable;
Arranging the derrick provided on both sides of the turntable in the direction of the hull of the ship;
Locking the position of the turntable;
Performing a drilling operation using the derrick;
Releasing the position locking of the turntable after completion of the drilling operation;
Rotating the turntable to return to its original position; And
And locking the position of the turntable by using a unitary derrick structure. The method of claim 6,
When the derrick exists in the hull before the drilling operation, the equipment required for drilling is used as a concept of storage, and when the drilling operation is performed, the free space above the hull obtained by the rotation of the turn table is used as a drilling operation space And a drilling method using a unitized derrick structure.
KR1020130159923A 2013-12-20 2013-12-20 Drill ship having unit type derrick structure and drilling method using the unit type derrick structure KR20150073234A (en)

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KR1020130159923A KR20150073234A (en) 2013-12-20 2013-12-20 Drill ship having unit type derrick structure and drilling method using the unit type derrick structure

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101690958B1 (en) * 2015-08-31 2016-12-29 삼성중공업 주식회사 Drilling facilities
RU2694669C1 (en) * 2018-08-20 2019-07-16 Акционерное общество "Геологоразведка" Device for deep-sea drilling and method of deep-sea drilling
RU2731010C1 (en) * 2019-09-26 2020-08-28 Акционерное общество "Геологоразведка" Processing system for sea cluster drilling
CN113404525A (en) * 2021-07-21 2021-09-17 太原理工大学 Ring type drilling and anchoring machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101690958B1 (en) * 2015-08-31 2016-12-29 삼성중공업 주식회사 Drilling facilities
RU2694669C1 (en) * 2018-08-20 2019-07-16 Акционерное общество "Геологоразведка" Device for deep-sea drilling and method of deep-sea drilling
RU2731010C1 (en) * 2019-09-26 2020-08-28 Акционерное общество "Геологоразведка" Processing system for sea cluster drilling
CN113404525A (en) * 2021-07-21 2021-09-17 太原理工大学 Ring type drilling and anchoring machine

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