KR101665618B1 - Coring apparatus improving coring posture, coring system using the same and method of coring using the same - Google Patents

Coring apparatus improving coring posture, coring system using the same and method of coring using the same Download PDF

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Publication number
KR101665618B1
KR101665618B1 KR1020160019196A KR20160019196A KR101665618B1 KR 101665618 B1 KR101665618 B1 KR 101665618B1 KR 1020160019196 A KR1020160019196 A KR 1020160019196A KR 20160019196 A KR20160019196 A KR 20160019196A KR 101665618 B1 KR101665618 B1 KR 101665618B1
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KR
South Korea
Prior art keywords
drill
trigger
drilling
posture
drilling machine
Prior art date
Application number
KR1020160019196A
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Korean (ko)
Inventor
공기수
강무희
김경오
김진호
Original Assignee
한국지질자원연구원
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Priority to KR1020160019196A priority Critical patent/KR101665618B1/en
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Publication of KR101665618B1 publication Critical patent/KR101665618B1/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • E21B25/18—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being specially adapted for operation under water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
    • E21B49/025—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil of underwater soil, e.g. with grab devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B7/132—Underwater drilling from underwater buoyant support
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit

Abstract

The present invention relates to a coring system considering inclination of a coring apparatus and a correction method for an inclination of the coring apparatus using the same. According to the present invention, the coring apparatus comprises: a core filled with an object to be cored; a coring rod supporting the core; a weight body applying a load to the coring rod; and a posture correction unit correcting a posture wherein the coring rod is inclined on the sea bed to stabilize a posture wherein the coring rod is inserted into the sea bed.

Description

Field of the Invention [0001] The present invention relates to a drilling rig, a drilling system, and a drilling method using the drilling rig,

The present invention relates to a drilling machine used for drilling sediments piled on the sea floor, a drilling system using the same, and a drilling method.

Numerous drilling devices have been developed for studying geological resources or observing changes in earth's history and environment from sediments.

In most drilling equipment, a drilling rig with a core in which a drilling object is to be placed is placed on the seabed or in the bottom, and then inserted into the sediment using gravity or the like. The sediment is placed in the core by the insertion of the drill and the drill is recovered to obtain a sediment sample.

However, in most drills, drilling is located deep in the seabed or in the middle of the sea, so it is difficult to confirm whether the drill is inserted into the sediment while maintaining the vertical position.

There is a problem that the position (depth) of the sample in the sediment is different from the position (depth) in the sediment of the actually obtained sample when the drill is inserted into the sediment without maintaining the vertical.

FIG. 1 shows the case where the drill is inserted into the deposit with the vertical maintained, and FIG. 2 shows a case where the drill is inserted incorrectly while inclining the sea floor.

When the sediment is sampled at the same length on the drill core, the actual drilling of FIG. 1 and the drilling of FIG. 2 are drilled at different depths.

However, in the conventional drill, it is difficult to prevent the drill posture from being drilled incorrectly as shown in Fig.

Particularly, in case of a submarine vibro drill that inserts a drill into a sediment by electric motors when an electric motor is placed on the top of a general drill and the drill is incident on the seabed, the stability of the attitude of the first drill in the sedimentary layer is absolutely required do.

U. S. Patent No. 6,443, 244 (published Sept. 3, 2002) US Registration No. 4,473,323 (published September 25, 1984)

Accordingly, it is an object of the present invention to provide a drill rig, a drilling system, and a drilling method for preventing a drill that has reached the sea floor from being inserted into a seabed with a sloped surface.

SUMMARY OF THE INVENTION The object of the present invention is to provide a drilling rig that is capable of correcting a posture in which a drilling target is filled, a drilling rod supporting the core, a weight for imparting a load to the drilling rod, And a posture correcting section for stabilizing the posture to be inserted into the face.

The posture correcting unit may include an inflatable tube that forms buoyancy in the drill.

The posture correcting unit may further include a gas cylinder for supplying gas to the expansion tube, a supply pipe for connecting the expansion tube and the gas cylinder, and a trigger installed in a pipe of the supply pipe to open and close the supply pipe.

The posture correcting unit may further include a trigger actuator connected to the trigger and operating the trigger to open the supply pipe as the driller reaches the bottom surface of the bottom surface.

The trigger actuating body may be a magnetic body that is attached to the drill by a magnetic force and is detached from the drill by an impact transmitted as the drill reaches the bottom surface.

The weight body is formed with a receiving groove for receiving the cylinder, and the supply pipe can be fixed to the connecting ring by the fixing wire.

It is another object of the present invention to provide a drilling rig having a core filled with an object to be drilled, a driving unit for controlling up and down movement of the drilling rig, a rope connecting the drilling rig to the driving unit, And a posture correcting unit for stabilizing the posture in which the drill rod is inserted into the sea floor.

The drilling machine may include a weight body and a connection ring disposed at a center of the weight body and connecting the weight body to the rope.

The posture correcting unit may include an expansion tube disposed symmetrically with respect to the center of the weight to form buoyancy in the drill.

The posture correcting unit may further include a gas cylinder for supplying gas to the expansion tube, a supply pipe for connecting the expansion tube and the gas cylinder, and a trigger installed on a pipe of the supply pipe to open and close the supply pipe.

The posture correcting unit may further include a trigger actuator connected to the trigger and operating the trigger to open the supply pipe as the driller reaches the bottom surface of the bottom surface.

The trigger actuating body may be a magnetic body that is attached to the drill by a magnetic force and is detached from the drill by an impact transmitted as the drill reaches the bottom surface.

The weight body is formed with a receiving groove for receiving the cylinder, and the supply pipe can be fixed to the connecting ring by the fixing wire.

It is another object of the present invention to provide a drilling rig having a core filled with a drilling target, a driving unit for controlling up and down movement of the drilling rig, a rope for connecting the drilling rig to the driving unit and a posture in which the drilling rig is inserted obliquely And a posture correcting unit for allowing the drill rig to be inserted into the sea floor in a stable posture, the drilling method comprising: a drilling step of lowering the drilling machine toward the sea floor; and a drilling step of drilling the drilling machine And a posture correction step of stabilizing the posture in which the drill is inserted into the seabed surface.

In the posture correcting step, buoyancy is formed in the drill that has reached the bottom surface, and the posture of the drill can be corrected.

The posture correcting step may expand the expansion tube installed in the drill as the drill reaches the bottom surface.

A gas cylinder for supplying gas to the expansion tube, a supply pipe for connecting the expansion tube and the gas cylinder, a trigger installed on a pipe of the supply pipe to open and close the supply pipe, and a trigger attached to the drill by a magnetic force, And a magnetic body which is detached from the drilling rig by an impact transmitted as it reaches the undersurface.

According to the present invention, it is possible to provide a drilling machine, a drilling system and a drilling method using the drilling machine, which can improve the depth of drilling machine and the recovery rate of sediments by inserting the drilling machine in a stable posture.

1 is a view showing a case where drilling is made vertically.
2 is a view showing a case where the drilling is made oblique.
3 is a simplified view of the drilling system according to the present embodiment.
4 and 5 are views showing a coupling relationship between a drilling rig and a posture correcting part of the drilling system according to the present embodiment.
6 is a view showing a posture correcting unit of the drilling system according to the present embodiment.
7 is a view showing a drilling method according to the present embodiment.
8 to 10 are views showing a drilling posture correcting operation of the drilling system according to the present embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings.

The accompanying drawings are merely exemplary and are not to be construed as limiting the scope of the present invention.

Hereinafter, the drilling rig is described as an example using a gravity type (weight), but the drilling rig of the present invention can be applied to a type using a piston or a box drilling type.

Hereinafter, the drilling of sediments on the seabed is described by way of example, but the present invention can also be applied to other drilling objects other than sediments and sediments of the bottom.

Hereinafter, the drilling system according to the present embodiment will be described.

3 is a simplified view of the drilling system according to the present embodiment.

Referring to FIG. 3, the drilling system 1 includes a drill 10, a drive 20, a rope 30, and a posture correction unit 100.

The drilling machine 10 and the driving unit 20 are connected to each other through the rope 30. The drilling machine 10 is raised and lowered by the operation of the driving unit 20. [ The attitude correcting unit 100 is installed in the drilling machine 10 and moves up and down together with the drilling machine 10. [

The drilling machine 10 comprises a weight 11 and a drilling rod 12. A drilling core 13 is formed in the drilling rod 12 as an empty space in which sediments can be located. The upper part of the weight body 11 is connected to the rope 30 and the drilling machine 10 is raised and lowered by the operation of the driving part 20. [

When the rope 30 is further loosened after the drilling machine 10 is located on the seabed surface, the drilling rod 12 is inserted into the deposit by the weight of the weight 11. The sediment sample is placed in the drilling core 13 during the insertion process.

The driving unit 20 can be constructed using an electric motor or the like, and raises and lowers the drill 10. When the drilling is performed in a line, the driving unit 20 is positioned on a line. More specifically, the driving unit 20 may be an electric winch.

The rope 30 connects the drive unit 20 and the drilling machine 10 and transmits the power of the drive unit 20 to the drilling machine 10. The rope 30 may be made of any material and material suitable for power transmission. For example, natural material ropes, synthetic fiber ropes, metal wires, chains, and the like can be used.

The rope 30 is changed in the extending direction by the two pulleys 41, The extending direction of the drilling machine 10 in the vertical direction is changed by the first pulley 41 and the extending direction is changed from the drive portion 20 to the first sheave 42 by the second sheave 42 do. The first pulley 41 may be located at the distal end of the line crane.

In another embodiment, the second pulley 42 may be omitted, and in an alternative embodiment additional pulleys may be used.

On the other hand, the attitude determination unit 100 provides buoyancy to the drilling machine 10 when the drilling machine 10 reaches the sea floor, corrects the attitude of the drilling machine 10 inclined with respect to the sea floor, Stabilize.

FIGS. 4 and 5 are views showing a coupling relation between a drilling rig and a posture correcting part of the drilling system according to the present embodiment, and FIG. 6 is a view showing a posture correcting part of the drilling system according to the present embodiment.

Referring to FIGS. 4 to 6, the driller 10 is provided with a connection ring 15 for connecting the rope 30. The drill rod 12 passes through the center of the weight 11 so that the rope 30 is connected to the center of gravity of the weight 11 and the coupling ring 15 passes through the center of the drill rod 12, And it is preferably provided at the upper end of the rod 12. In addition, a receiving groove 17 for receiving the attitude correcting unit 100 is formed in the weight body 11. [

The attitude calibration unit 100 includes an expansion tube 110, a gas cylinder 120, a supply tube 130, a trigger 140, and a trigger actuator 150.

The gas cylinder 120 can be received in the receiving groove 17. The gas cylinder 120 may be filled with a gas such as carbon dioxide. The supply tube 130 extends from the outlet of the gas cylinder 120 and is connected to the expansion tube 110. The supply pipe 130 is connected to the connecting ring 15 by the fixing wire 131 so that the attitude correcting unit 100 is firmly supported on the weight 11. [

The trigger 140 is installed in a pipe of the supply pipe 130. The trigger 140 opens and closes the channel of the supply pipe 130. The trigger actuating body 150 can be connected to the trigger 140 via the trigger wire 151 and attached to the borehole 10. The trigger actuating body 150 may be provided with a magnetic body which is attached to the drilling machine 10 by a magnetic force and which is detached from the drilling machine 10 by an impact generated as the drilling machine 10 reaches the bottom surface.

The attitude correcting unit 100 inflates and buoyens the inflating tube 110 so that the borehole 10 reaching the sea floor is maintained in a vertical state. Or symmetrically with respect to at least one of the front and rear directions.

As shown in the drawing, the gas cylinder 120, the supply pipe 130, the trigger 140, and the trigger actuating member 150 are provided in plural numbers according to the number of the expansion tubes 110, As shown in FIG. Although not shown, in other embodiments, the gas cylinder 120 may be provided with less than or equal to the number of the expansion tubes 110, and the supply tube 130 extending from the gas cylinder 120 may be provided in the quantity of the expansion tubes 110 And may be branched to supply gas to the plurality of expansion tubes 110.

Hereinafter, a method for correcting the slope gradient using the drilling system according to the present embodiment will be described.

FIG. 7 is a view showing a drilling method according to the present embodiment, and FIGS. 8 to 10 are views showing a drilling posture correcting operation of the drilling system according to the present embodiment.

Referring to FIGS. 7 to 10, the method for correcting the slope gradient according to the present embodiment may include a slope descent step S11 and a posture correction step S13.

The drill lowering step S11 is a step of lowering the drilling machine 10 toward the bottom of the sea using the driving part 20. [ The drilling machine 10 descending toward the sea floor can reach the seabed surface (see Fig. 8).

Subsequently, the posture correcting step (S13) corrects the posture in which the drilling machine 10 is tilted with respect to the sea floor by providing buoyancy to the drilling machine 10 that has reached the bottom of the sea, Is stabilized.

That is, as the drilling machine 10 reaches the bottom of the sea, an impact is transmitted to the drilling machine 10, and the impact on the triggering body 150 can be released from the drilling machine 10 (see FIG. 9). The trigger wire 151 pulls the trigger 140 as the trigger actuating body 150 is disengaged from the drill bit 10. As the trigger 140 is pulled, the supply tube 130 is opened. The gas inside the gas cylinder 120 is supplied to the expansion tube 110 through the supply pipe 130.

As the expansion tube 110 is expanded, buoyancy is generated in the drilling machine 10, and the attitude of the drilling machine 10 which has reached the bottom of the sea is corrected, so that the drilling machine 10 can maintain a vertical state with respect to the sea floor (See FIG. 10).

The drill according to the present embodiment as described above, the drilling system using the drill, and the drilling method can improve the depth of drill and the recovery rate of the drill by inserting the drill into the seabed in a stable posture.

 The above-described embodiments are illustrative of the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

10: Heater 11: Heavy weight
12: Drilling rod 13: Drilling core
100: attitude correction unit 110: expansion tube
120: gas cylinder 130: supply pipe
140: Trigger 150: Trigger actuator

Claims (17)

A core filled with the object to be drilled;
A drill rod supporting the core;
A weight for imparting a load to the drill rod;
And a posture correcting unit for correcting an attitude of the drilling rod inclined to the sea floor to stabilize an attitude in which the drilling rod is inserted into the seabed surface,
The posture correcting unit
An inflatable tube forming buoyancy in the drill;
A gas cylinder for supplying gas to the expansion tube;
A supply pipe connecting the expansion tube and the gas cylinder;
And a trigger installed on a pipeline of the supply pipe to open and close the supply pipe. delete delete The method according to claim 1,
The posture correcting unit
Further comprising a trigger operative member connected to the trigger and operating the trigger such that the trigger opens the supply line as the drill reaches the bottom surface. 5. The method of claim 4,
Wherein the trigger operating body is a magnetic body that is attached to the drilling machine by a magnetic force and is detached from the drilling machine by an impact transmitted when the drilling machine reaches the bottom surface of the drilling machine. The method according to claim 1,
Wherein the weight body is formed with a receiving groove for receiving the gas cylinder,
Further comprising: a fixing wire fixed to a connecting ring provided on the weight body so as to connect a driving part for controlling up and down movement of the drilling machine and a rope connecting the weight body. A drill having a core filled with an object to be drilled, a drill rod supporting the core, and a weight for imparting a load to the drill rod;
A driving unit for controlling vertical movement of the drilling machine;
A rope connecting the drill and the driving unit;
And a posture correcting unit for correcting the posture of the drilling rod inclined to the sea floor to stabilize the posture of the drill rod inserted into the seabed surface,
The posture correcting unit
An inflatable tube forming buoyancy in the drill;
A gas cylinder for supplying gas to the expansion tube;
A supply pipe connecting the expansion tube and the gas cylinder;
And a trigger installed on a pipeline of the supply pipe to open and close the supply pipe. 8. The method of claim 7,
The drill
And a connection ring disposed at a center of the weight to connect the weight to the rope. delete delete 8. The method of claim 7,
The posture correcting unit
Further comprising a trigger actuator operatively connected to the trigger and operable to trigger the trigger to open the feed line as the drill reaches the undersurface. 12. The method of claim 11,
Wherein the trigger operating body is a magnetic body that is attached to the drilling machine by a magnetic force and is detached from the drilling machine by an impact transmitted as the drilling machine reaches the bottom surface of the drilling machine. 8. The method of claim 7,
Wherein the weight body is formed with a receiving groove for receiving the gas cylinder,
Further comprising a fixing wire fixed to a connection ring provided on the weight so as to support the supply pipe so that a rope connecting the driving unit and the weight is connected. A drill having a core filled with an object to be drilled; a driving part for controlling vertical movement of the drill; a rope connecting the drill to the driving part; and a posture in which the drill is inserted obliquely to the sea floor, And a posture correcting unit for allowing the posture correcting unit to be inserted into the surface of the drilling unit,
A drilling lowering step of lowering the drilling machine toward the sea floor;
When the drill reaches the bottom of the sea, a trigger installed on the supply pipe connected to the gas cylinder and the expansion tube expands the expansion tube by opening the supply pipe to correct an attitude of inclining the drill to the sea floor, And a posture correcting step of stabilizing the posture to be inserted. delete delete 15. The method of claim 14,
Characterized in that the trigger is attached to the drill by a magnetic force and the supply pipe is opened by a trigger operating body composed of a magnetic body which is detached from the drill by an impact transmitted as the drill reaches the bottom surface .

KR1020160019196A 2016-02-18 2016-02-18 Coring apparatus improving coring posture, coring system using the same and method of coring using the same KR101665618B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473323A (en) 1983-04-14 1984-09-25 Exxon Production Research Co. Buoyant arm for maintaining tension on a drilling riser
US6443244B1 (en) 2000-06-30 2002-09-03 Marathon Oil Company Buoyant drill pipe, drilling method and drilling system for subterranean wells
JP2005155108A (en) * 2003-11-21 2005-06-16 Koken Boring Mach Co Ltd Core sampling method of sea bottom ground
KR20150056232A (en) * 2013-11-15 2015-05-26 한국지질자원연구원 Coring system considering tilting of coring part and Method of compensating depth of coring part using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473323A (en) 1983-04-14 1984-09-25 Exxon Production Research Co. Buoyant arm for maintaining tension on a drilling riser
US6443244B1 (en) 2000-06-30 2002-09-03 Marathon Oil Company Buoyant drill pipe, drilling method and drilling system for subterranean wells
JP2005155108A (en) * 2003-11-21 2005-06-16 Koken Boring Mach Co Ltd Core sampling method of sea bottom ground
KR20150056232A (en) * 2013-11-15 2015-05-26 한국지질자원연구원 Coring system considering tilting of coring part and Method of compensating depth of coring part using the same

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