KR101691076B1 - Device for replacing drill bit - Google Patents

Device for replacing drill bit Download PDF

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Publication number
KR101691076B1
KR101691076B1 KR1020150113657A KR20150113657A KR101691076B1 KR 101691076 B1 KR101691076 B1 KR 101691076B1 KR 1020150113657 A KR1020150113657 A KR 1020150113657A KR 20150113657 A KR20150113657 A KR 20150113657A KR 101691076 B1 KR101691076 B1 KR 101691076B1
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KR
South Korea
Prior art keywords
drill bit
holder
drill
drill pipe
replacement
Prior art date
Application number
KR1020150113657A
Other languages
Korean (ko)
Inventor
윤자문
임혁진
박경석
이창헌
서진호
Original Assignee
삼성중공업 주식회사
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Priority to KR1020150113657A priority Critical patent/KR101691076B1/en
Application granted granted Critical
Publication of KR101691076B1 publication Critical patent/KR101691076B1/en

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    • 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
    • E21B19/18—Connecting or disconnecting drill bit and drilling pipe
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

A device for replacing a drill bit is disclosed. The device for replacing a drill bit comprises: a body unit; a pressurization type holder extending from the body unit to grip a drill pipe; and a rotary holder placed in a lower portion of the pressurization type holder, and extending from the body unit to grip and rotate a drill bit screwed to an end portion of the drill pipe.

Description

A device for replacing drill bit

The present invention relates to a drill bit replacement apparatus.

Drilling, which is a drilling of small holes in the crust, is performed to acquire various knowledge of the crust and to collect oil, natural gas, hot spring, groundwater, and the like. At this time, a drill bit is used to break the rock and drill it, or to rotate the rock surface by pressing it against the rock surface.

Figure 1 schematically illustrates a typical drilling process.

A riser 1 is vertically extended from a drill ship floating in the sea toward a sea floor and a drill pipe 2 having drill bits 4 at its ends is inserted into the riser 1.

A mud such as drilling fluid is fed downward through the inside of the drill pipe 2 and the mud is supplied to the drill pipe 2 along with the drill cuts between the drill pipe 2 and the riser 1 And returns in an upward direction through the space. That is, the riser 1 functions as a return path for returning the mud.

The bottom surface of the path where the riser 1 is installed is provided with an explosion preventer (BOP) 40 for preventing the gas from rising up to the drill hole and exploding when the drill bit 40 installed on the end of the drill pipe 2 is mistaken for the gas field in the ground, A preventer 5 is installed.

A drill bit 4 is mounted at the end of the drill pipe 2 at different drilling depths and a drill motor 3 for transferring rotational power to the drill bit 4 is installed in the drill pipe 2, Respectively.

As described above, since the drill bit 4 is used to form a hole in the crust, the wear is inevitable.

In order to replace the worn drill bit 530, the drill bit 2 is removed one by one to allow the drill bit 4 to reach the drip-hole so that the drill bit 4 is replaced, So that the drill bit 4 is lowered again to the drilling position of the seabed.

However, the replacement work of the drill bit 4 described above is problematic in that the work efficiency is deteriorated due to a tremendous repetitive work requiring a long time.

Korea Patent Publication No. 2010-0008587 (drill bit for drilling)

The present invention provides a drill bit replacing apparatus capable of replacing a drill bit on the underside of the drill bit, thereby preventing a decrease in work efficiency due to drill bit replacement.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, A pusher holder extending from the body portion to grip the drill pipe; And a rotatable holder located below the pressurized holder and extending from the body for grasping and rotating a threaded drill bit at an end of the drill pipe.

Here, the first stretchable portion may be extended or contracted in the linear direction in order to change the distance between the pressurized holder and the body portion. And a horizontal operating part interposed between the first stretchable part and the body part to rotate the first stretchable part on a horizontal plane.

The rotary holder includes: a holder body formed in a multi-joint structure so as to perform opening and closing operations; A plurality of wheels (wheeel) arranged at predetermined positions, each of the wheels being installed such that a part of the shape is exposed to the outside of the holder body to form a contact surface where the drill bit is gripped; And at least one drive motor for providing a rotational force to the plurality of wheels.

A second stretchable portion that is extended or contracted in a linear direction to change a distance between the rotary holder and the body portion; And a horizontal-vertical operating portion interposed between the first stretchable portion and the body portion, for moving the first stretchable portion on a horizontal plane in the vertical and horizontal directions.

A sensor for recognizing the marker attached to the drill pipe and the drill bit, respectively; And a controller for recognizing a movement destination of the rotary holder and the pressing holder for holding the drill pipe and the drill bit, respectively, using the sensor information recognized by the sensor.

The drill bit replacement device may be disposed in a housing adjacent to the top or bottom of the explosion protector (BOP).

A drill bit rest may be provided in the housing for receiving a worn drill bit separated from the drill pipe and for mounting one or more replacement drill bits to be newly mounted on the drill pipe.

The body may be integrated with the drill bit rest.

According to the embodiment of the present invention, replacement work of the drill bit can be carried out at the seabed so that lowering of the working efficiency due to the replacement of the drill bit can be prevented.

1 shows a general drilling process.
FIG. 2 illustrates a drilling process according to an embodiment of the present invention; FIG.
3 is an external view of a drill bit replacement apparatus according to an embodiment of the present invention;
FIGS. 4 and 5 are diagrams for explaining an operation of a drill bit replacement apparatus according to an embodiment of the present invention; FIG.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 2 is a view showing a drilling process according to an embodiment of the present invention, FIG. 3 is an external view of a drill bit replacement apparatus according to an embodiment of the present invention, and FIGS. FIG. 8 is a diagram for explaining an operation process of the drill bit replacement apparatus according to the example; FIG.

2, a riser 1 is vertically extended from a drill ship floating in the sea toward a sea floor, and a drill pipe 2 is inserted into the riser 1.

An explosion preventer 5 is installed on the undersurface where the riser 1 is extended and a drill bit replacement system 210 is installed below the explosion preventer 5. Here, the drill bit replacement system 210 is installed together with the explosion preventer 5 and can be lowered toward the sea floor together with the explosion preventer 5. [

2, the drill bit replacement system 210 is installed below the explosion preventer 5. However, it is obvious that the drill bit replacement system 210 may be installed above the explosion protector 5 of the drill bit replacement system 210. [

A drill bit 4 is mounted on the end of the drill pipe 2 in a threaded manner and the drill bit 4 is connected to a drill motor 3 provided inside the drill pipe 2 for transmitting rotational power . For example, female thread is formed in the end region of the drill pipe 2, and male thread is formed in the end region of the drill bit 4.

Drill bit replacement system 210 includes a drill bit replacement device 300 (see FIG. 3), a drill bit restraint 510 (see FIG. 5), and a housing Not shown).

Hereinafter, for convenience of explanation, the drill bit 4, which is required to be replaced as the drill bit 4 already coupled to the end of the drill pipe 2, is referred to as a worn drill bit 530, The drill bit 4, which is newly replaced at the end, is referred to as a replacement drill bit 520. However, if the distinction between the worn drill bit 530 and the replacement drill bit 520 is unnecessary, it may be referred to as a drill bit 4.

3, the drill bit replacing apparatus 300 includes a base 310, a supporter 320, a horizontal operating portion 330, a horizontal-vertical operating portion 335, And may include first and second stretchable and contractible portions 340a and 340b, first and second holders 350a and 350b, a roller portion 360, and a control portion 370. [ The base 310 and the supporter 320 described above may be referred to as a body portion for convenience.

The base 310 forms the substructure of the drill bit replacement device 300. The base 310 may be formed as an independent component, and may be integrally formed with the drill bit rest 510 of FIG.

The supporter 320 supports the upper structure such as the horizontal operation portion 330 and the horizontal-vertical operation portion 335 at a predetermined height from the upper surface of the base 310 or the drill bit rest 510.

The horizontal operating portion 330 horizontally rotates the first holder 350a in a direction in which the drill pipe 2 can be gripped when the drill bit is exchanged. If the horizontal operation portion 330 needs to move the first holder 350a also in the vertical direction, it may be implemented in the same or similar manner as the horizontal-vertical operation portion 335 described later.

The horizontal-vertical operating portion 335 is coupled to the end of the drill pipe 2 for the replacement of the drill bit and grasps the worn drill bit 530 (see FIG. 5) The bit 530 is placed in the drill bit holder 510 or the drill bit holder 510 is pushed into the drill bit holder 510 to grip the replacement drill bit 520 2 holder 350b in the vertical direction and horizontally.

The first and second stretchable and contractible portions 340a and 340b may be means for telescopically inserting and withdrawing multi-stage booms and extending and shrinking the length thereof. For example, the first and second stretchable and contractible portions 340a and 340b may be cylinders driven by, for example, .

The first stretchable and contractible portion 340a connects the horizontal operating portion 330 and the first holder 350a and the second stretchable and contractible portion 340b connects the horizontal and vertical operating portion 335 and the second holder 350b, And moves the first holder 350a or the second holder 350b in a linear direction by a predetermined length, respectively.

The first and second holders 350a and 350b are means for grasping a designated object and are formed in a multi-joint structure so that they can be opened or closed around the respective joints. A method and structure for implementing an opening / closing operation such as a finger structure of a robot arm for gripping a target object will be apparent to those skilled in the art, so a detailed description thereof will be omitted.

In order to separate the worn drill bit 530 coupled to the end of the drill pipe 2 or to newly engage the replacement drill bit 520 at the end of the drill pipe 2, The first holder 350a disposed on the relatively upper side functions to grasp the drill pipe 2 and the second holder 350b disposed on the relatively lower side functions to grasp the worn drill bit 530 And to grasp and rotate the replacement drill bit 520 to be newly joined.

At this time, it is of course possible to carry out an operation of separating a part of the drill pipe 2 fastened in order to allow the drill bit 4 to be located at a proper height in the drill bit replacement system 210 4 (a) and 4 (b)).

Since the drill pipe 2 and the drill bit 4 are coupled in a threaded engagement manner, a new one of the drill pipe 2 and the drill bit 4 Must be pressed so as to remain stationary and rotated by applying rotational force to the other.

To this end, the second holder 350b for gripping the drill bit 4 may be provided with a plurality of roller units 360 including, for example, a drive motor and a wheel connected to the drive motor. When the second holder 350b grasps the drill bit 4, the surface of the wheel is held in contact with the drill bit 4, and the rotational force that the plurality of roller portions 360 rotate in the same direction The drilled bit 530 can be detached from the drill pipe 2 or the replacement drill bit 520 can be coupled to the end of the drill pipe 2.

The first holder 350a may be referred to as a pressing holder and the second holder 350b may be referred to as a rotary holder for the sake of convenience.

When the drill bit 4 is rotated, the drill bit 4 can be raised or lowered in the direction in which the threaded connection between the drill bit 4 and the drill pipe 2 is engaged or disengaged, and the horizontal- 335 can move the second holder 350b in the vertical direction.

The control unit 370 controls the horizontal operation unit 330 and the first stretchable and contractible unit 350 so that the first holder 350a grasps the drill pipe 2 when a control command for replacing the drill bit 4 is received from the drill- 340a and the first holder 350a. After the second holder 350b grasps the worn drill bit 530, the control unit 370 rotates the wheel of the roller unit 360 to rotate the worn drill bit 530 from the drill pipe 2 And controls the operation of the horizontal-vertical operating portion 335, the second stretchable portion 340b, the second holder 350b, and the roller portion 360 so as to be separated.

Although not shown, a sensor unit for sensing whether the first and second holders 350a and 350b hold the drill pipe 2 or the drill bit 4 and providing the sensing information to the control unit 370 is further included It will be possible.

The control unit 370 may also include movement destination position information (for example, a horizontal rotation angle) for allowing the first and second holders 350a and 350b to move to a position for holding the drill pipe 2 or the drill bit 4, Information on the expansion and contraction of the stretchable and contractible part, etc.) is stored in advance in the storage unit (not shown).

However, if the movement destination position information is not stored, the movement destination position information may be provided to the controller 370 from the drill ship.

If the markers are attached to the positions of the drill pipe 2 or the drill bit 4 to be held by the first and second holders 350a and 350b and the marker is attached to the drill bit replacement device 300 If a recognizable sensor is provided, the controller 370 may recognize the movement destination position of the first and second holders 350a and 350b using the information that the corresponding sensor senses the marker.

Figures 4 and 5 illustrate the use of a replacement drill bit 520 mounted on a drill bit rest 510 of a drill bit replacement system 210 to ensure that the drill bit replacement device 300 has a wear Lt; RTI ID = 0.0 > 530 < / RTI >

4 (a) and 4 (b), the drill bit 2 is disassembled and the drill pipe 2 is elevated in the drill ship, 4 (c), the first holder 350a holds the drill pipe 2 by the control unit 370 so as to grasp the drill pipe 2, as shown in Fig. 4 (c) And the second holder 350b is manipulated to grasp the drill bit 4.

Thereafter, the first holder 350a maintains the pressurized state so as to keep the drill pipe 2 in a fixed state in order to separate the worn drill bit 530 coupled to the end of the drill pipe 2, The roller unit 360 provided in the holder 2 350b provides rotational force to the drill bit 4 mounted on the lower portion of the drill pipe 2 so that the worn drill bit 530 is rotated in the direction in which the worn drill bit 530 is separated.

5, when the worn drill bit 530 is separated from the drill pipe 2, the second holder 350b is operated by the operation of the horizontal-vertical operating portion 335 under the control of the controller 370 After putting the worn drill bit 530 in the empty space among the designated spaces of the drill bit holder 510, it is moved to grip the replacement drill bit 520.

When the replacement drill bit 520 is grasped by the second holder 350b, the second holder 350b is moved to the lower portion of the drill pipe 2 (i.e., the first holder 350a) under the control of the controller 370, The drill bit 4 is rotated by the control unit 370 so that the roller unit 360 is rotated in the direction in which the replacement drill bit 520 is coupled to the drill pipe 2 do.

The order of use of the replacement drill bits 520 placed in the drill bit rests 510 formed in the housing is predetermined (for example, sequentially used in a clockwise direction) so that the position of the worn drill bit 530 And the position where the replacement drill bit 520 is mounted may be managed.

Of course, by maintaining the position information of the second holder 350b for replacement of the drill bit 4, the position where the worn drill bit 530 is mounted and the position where the replacement drill bit 520 is mounted are managed It might be.

5 illustrates a case where the drill bit holder 510 is formed in a donut shape. However, it is needless to say that the shape of the drill bit holder 510 is not limited thereto.

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 as defined in the appended claims. It will be understood that the present invention can be changed.

1: riser 2: drill pipe
3: Drill motor 4: Drill bit
5: Explosion prevention device 210: Drill bit replacement system
300: Drill bit replacement device 310: Base
320: Supporter 330: Horizontal control unit
335: Horizontal-vertical operating part 340a:
340b: second stretchable portion 350a: first holder
350b: second holder 360: roller portion
370: control unit 510: drill bit holder
520: Replacement drill bit 530: Worn drill bit

Claims (8)

A body portion;
A pusher holder extending from the body portion to grip the drill pipe;
A rotatable holder located below the pressurized holder and extending from the body to grasp and rotate a threaded drill bit at an end of the drill pipe;
A sensor for recognizing the marker attached to the drill pipe and the drill bit, respectively; And
And a control unit for recognizing a movement destination of the rotary holder and the pressing holder for holding the drill pipe and the drill bit, respectively, using sensor information recognized by the sensor. The method according to claim 1,
A first stretchable portion that is extended or contracted in a linear direction to change a distance between the push type holder and the body portion; And
And a horizontal operating portion interposed between the first stretchable portion and the body portion to rotate the first stretchable portion on a horizontal plane. The method according to claim 1,
The rotary holder includes:
A holder body formed in a multi-joint structure so as to perform opening and closing operations;
A plurality of wheels (wheeel) arranged at predetermined positions, each of the wheels being installed such that a part of the shape is exposed to the outside of the holder body to form a contact surface where the drill bit is gripped; And
And at least one drive motor for providing a rotational force to the plurality of wheels. The method according to claim 1 or 3,
A second stretchable portion that is extended or contracted in a linear direction to change a distance between the rotary holder and the body portion; And
Further comprising a horizontal-vertical operating portion interposed between the second stretchable portion and the body portion, for moving the second stretchable portion on a horizontal plane to rotate and vertically move up and down. delete The method according to claim 1,
Wherein the drill bit replacement device is disposed in a housing adjacent to an upper or lower portion of an explosion protector (BOP). The method according to claim 6,
Wherein a drill bit rest is mounted within the housing for receiving a worn drill bit separated from the drill pipe and for mounting one or more replacement drill bits to be newly mounted on the drill pipe. 8. The method of claim 7,
Wherein the body is embodied as being integral with the drill bit rest.
KR1020150113657A 2015-08-12 2015-08-12 Device for replacing drill bit KR101691076B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019226096A1 (en) * 2018-05-21 2019-11-28 Epiroc Rock Drills Aktiebolag System for drill bit change in a drilling rig, drilling rig comprising such a system, and a method for changing drill bits using such a system
KR20220067719A (en) * 2020-11-18 2022-05-25 한국기술교육대학교 산학협력단 Apparatus and method of robot control through vision recognition using deep learning and marker
WO2022200831A1 (en) * 2021-03-24 2022-09-29 Bizama Almendras Raul Patricio Drilling tool change unit and a method for making said change

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6457526B1 (en) * 1999-11-02 2002-10-01 Halliburton Energy Services, Inc. Sub sea bottom hole assembly change out system and method
US20050056122A1 (en) * 2003-09-05 2005-03-17 Jaroslav Belik Drillpipe spinner
US7313986B2 (en) * 2005-12-23 2008-01-01 Varco I/P, Inc. Tubular-drill bit connect/disconnect apparatus
KR20100008587A (en) 2008-07-16 2010-01-26 삼성중공업 주식회사 Drill bit for drillship

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6457526B1 (en) * 1999-11-02 2002-10-01 Halliburton Energy Services, Inc. Sub sea bottom hole assembly change out system and method
US20050056122A1 (en) * 2003-09-05 2005-03-17 Jaroslav Belik Drillpipe spinner
US7313986B2 (en) * 2005-12-23 2008-01-01 Varco I/P, Inc. Tubular-drill bit connect/disconnect apparatus
KR20100008587A (en) 2008-07-16 2010-01-26 삼성중공업 주식회사 Drill bit for drillship

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019226096A1 (en) * 2018-05-21 2019-11-28 Epiroc Rock Drills Aktiebolag System for drill bit change in a drilling rig, drilling rig comprising such a system, and a method for changing drill bits using such a system
KR20210010445A (en) * 2018-05-21 2021-01-27 에피록 로크 드릴스 악티에볼라그 Drill bit replacement systems in drilling rigs, drilling rigs containing such systems, and methods of replacing drill bits using such systems
US11261677B2 (en) 2018-05-21 2022-03-01 Epiroc Rock Drills Aktiebolag System for drill bit change in a drilling rig, drilling rig comprising such a system, and a method for changing drill bits using such a system
EP3797205B1 (en) 2018-05-21 2023-07-05 Epiroc Rock Drills Aktiebolag System for drill bit change in a drilling rig, drilling rig comprising such a system, and a method for changing drill bits using such a system
KR102658767B1 (en) 2018-05-21 2024-04-17 에피록 로크 드릴스 악티에볼라그 Drill bit replacement systems in drilling rigs, drilling rigs incorporating such systems, and drill bit replacement methods using these systems
KR20220067719A (en) * 2020-11-18 2022-05-25 한국기술교육대학교 산학협력단 Apparatus and method of robot control through vision recognition using deep learning and marker
KR102452315B1 (en) * 2020-11-18 2022-10-06 한국기술교육대학교 산학협력단 Apparatus and method of robot control through vision recognition using deep learning and marker
WO2022200831A1 (en) * 2021-03-24 2022-09-29 Bizama Almendras Raul Patricio Drilling tool change unit and a method for making said change

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