KR20150108549A - Test Apparatus and Method for Drilling Equipment - Google Patents

Abstract

The present invention relates to a device for testing a drilling device and a method thereof. A test wellhead is arranged on the seabed. A drilling device is latching-coupled to the test wellhead arranged on the seabed to perform various tests on drilling devices used in the deep sea such as BOP equipment under similar conditions to deep sea conditions in order to prevent and manage problems about the drilling devices, so the drilling devices are smoothly and quickly installed and operated in an actual installation site like a deep sea. An operation test of a drilling device is performed in the seabed to increase accuracy and reliability about a drilling device test. The test wellhead is coupled to a buoyancy structure to freely transfer and move the test wellhead by self buoyancy adjustment about the buoyancy structure, so the test wellhead is conveniently installed and collected without a separate transfer device.

Description

Technical Field [0001] The present invention relates to a drilling equipment test apparatus,

The present invention relates to a drilling rig test apparatus and method. More specifically, by placing the test well head on the seabed and testing it by latching the drilling rig to the test wellhead located on the sea floor, drilling equipment used in deep sea environments such as BOP equipment can be tested under conditions similar to deep sea environment It is possible to perform various tests by exposing and to prevent and manage the problems of the drilling equipment in advance, so that the installation and operation of the drilling equipment can be performed smoothly and quickly at the actual installation site such as the deep sea , The operation test of the drilling equipment can be performed on the sea floor, improving the accuracy and reliability of the drilling equipment test, and combining the test well head with the buoyancy structure to free the test wellhead through its own buoyancy control to the buoyancy structure By transporting and transporting, it is convenient Relates to the testing the wellhead installation and drilling test device and method that can be recovered.

As the international phenomenon of industrialization and industry develops, the use of 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, the development of the marginal field or deep-sea oil field, which had been neglected due to economic difficulties, has become economic in recent years. 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 as a fixed platform for drilling at one point in the offshore area. Recently, floating drilling facility capable of drilling in depths of 3,000m or more has been developed and used for deep sea drilling.

These drilling facilities are equipped with various drilling equipments such as derrick system, riser, drill string and so on to drill oil and gas existing under the sea floor.

In recent years, the development of deep-sea oil fields has been actively promoted, so safety of various drilling equipments is especially important. Among the drilling equipments, the most relevant equipment for drilling is BOP (Blow out Preventer, Prevention device).

BOP equipment is installed to prevent the gas explosion of submarine wells by safely removing high pressure gas generated during drilling process and connected to the upper well head of submarine oil well through a riser from marine drilling facility .

These BOP equipment is designed to withstand deep sea conditions and withstand pressures up to 15,000 psi in high pressure environments above 3,000 m (4,300 psi) depth. However, since the test is not performed in the actual environment until it is installed in the actual deep water well, various problems arise in actual installation work.

Generally, the test for the BOP equipment is partially tested by applying external pressure or internal pressure separately to each part constituting the BOP equipment, and there is no device capable of performing such a test in the fully assembled state As a state, there is a desperate need for a device capable of performing various types of testing under the same conditions as the actual environment.

Korean Patent No. 10-1185286

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and it is an object of the present invention to provide a test well head, which can be placed on the sea bed and test- , It is possible to perform various tests by exposing the drilling equipments used in the deep sea environments such as deep sea environment to similar conditions in the deep sea environment and thereby to prevent and manage the problems of the drilling equipment in advance, Provides drilling equipment test method and method that can improve the accuracy and reliability of drilling equipment test by allowing installation and operation of equipment to be carried out smoothly and quickly, and operation test of drilling equipment can be performed on the sea floor .

It is a further object of the present invention to provide a method and system for testing a test well head that can be conveniently and conveniently connected without the need for a separate carrier or the like by coupling the test well head to the buoyancy structure and freely transporting and moving the test well head through self- And to provide a drilling equipment test apparatus and method that can be installed and recovered.

The present invention relates to a drilling rig testing apparatus for testing a drilling rig used in a deep-sea environment, the drilling rig testing apparatus comprising: a foundation structure installed on a bottom of a seabed; A test well head formed to allow the device under test to be latched; And a buoyant structural body formed so as to be able to move up and down from the seabed by the buoyancy adjustment so as to be seated on the foundation structure, wherein the test well head is seated on the foundation structure together with the buoyant structural body, And the test equipment is coupled to the test well head located on the sea floor to perform an operational test on the test target equipment in water.

At this time, the device under test can be applied as BOP equipment.

In addition, the BOP equipment may be connected to a lower end of a riser extending from a separate drill ship located in the sea to the seabed, and may be moved downward with the riser and latched to the test wellhead.

In addition, the operation test may include at least one of a landing test, an emergency separation test, an operation test, an internal pressure test, a leakage test and a mud circulation test for the test well head of the BOP equipment.

The apparatus may further include an internal pressure supply unit for supplying a high-pressure fluid to the BOP equipment and performing an internal pressure test on the BOP equipment.

In addition, the foundation structure may be provided with a locking device capable of fixing the buoyancy structure in a state where the buoyancy structure is seated on the foundation structure.

In addition, the buoyancy structure may have a buoyancy chamber formed therein, the buoyancy structure may include an air port capable of supplying and discharging air to and from the buoyancy chamber, and a seawater port capable of supplying and discharging seawater to the buoyancy chamber .

In addition, the air port of the buoyancy structure may be connected through an air flow pipe separate from an air compressor capable of supplying and sucking air.

The air port is equipped with an air opening / closing valve capable of opening and closing the air port, and the sea water port is equipped with a seawater opening / closing valve and a differential pressure valve capable of opening / closing the sea water port.

The air compressor may be provided on a separate installation support line, and the bumper structure may be seated on the foundation structure by the installation support line.

According to another aspect of the present invention, there is provided a method of testing a drilling rig for testing drilling equipment used in a deep sea environment, the method comprising: installing a foundation structure on the bottom of the seabed; Coupling a test well head formed to allow the device under test to be latched to a separate buoyancy structure and seating the buoyancy structure and the test well head on the foundation structure through buoyancy control on the buoyancy structure; And injecting the device under test into the sea bed and latching the device to the test well head, wherein the operational test of the device under test is performed in water.

According to the present invention, the test well head is placed on the sea bed and the test wellhead placed on the sea floor is tested by latching the drilling equipment so that drilling equipment used in a deep sea environment such as BOP equipment can be tested under similar conditions So that the problems of the drilling equipment can be prevented and managed in advance, so that the installation and operation of the drilling equipment can be smoothly and quickly performed at the actual installation site such as the deep sea. And the operation test of the drilling equipment can be performed on the seabed so that the accuracy and reliability of the drilling equipment test can be improved.

Also, by connecting the test well head to the buoyancy structure and freely transporting and moving the test well head through self-buoyancy control to the buoyancy structure, it is possible to conveniently install and retrieve the test wellhead without a separate transport device There is an effect that can be.

1 is a conceptual diagram schematically showing a configuration of a drilling rig testing apparatus according to an embodiment of the present invention;
FIG. 2 is a conceptual diagram schematically showing a configuration of a buoyant structure according to an embodiment of the present invention. FIG.
3 is a conceptual diagram schematically showing an operating state of a buoyant structure according to an embodiment of the present invention;
FIGS. 4 to 6 are conceptual diagrams schematically showing a test process using a drilling rig testing apparatus according to an embodiment of the present invention;
FIG. 7 is a plan view schematically showing a configuration of a line for installing a BOP test apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a conceptual diagram schematically showing a configuration of a drilling rig testing apparatus according to an embodiment of the present invention. FIG. 2 is a conceptual diagram schematically showing a configuration of a buoyancy structure according to an embodiment of the present invention. 4 is a conceptual diagram schematically showing a test process using a drilling equipment testing apparatus according to an embodiment of the present invention, to be.

A drilling rig testing apparatus according to an embodiment of the present invention is an apparatus capable of performing various types of tests by exposing a drilling equipment used in a deep-sea environment to environmental conditions similar to a deep-sea environment, and includes a foundation structure A buoyancy structure 110 formed to be capable of being vertically moved from the sea bed to the foundation structure 100 by buoyancy control and being seated on the foundation structure 100, .

The foundation structure 100 may be formed on the bottom of the seabed so as to support the test target equipment, the test well head 300, the buoyancy structure 110, and the like in various structures and shapes. For example, it may be formed as a simple square concrete block as shown in FIG. 1, and a reinforcing member (not shown) for reinforcing the strength may be inserted into the concrete block.

In this case, the equipment to be tested may be a device used in a deep sea environment, for example, a BOP equipment 200 that is latched to the upper well head of a seabed well to prevent internal gas explosion of the seabed well can be applied . Hereinafter, for convenience of explanation, the case where the BOP equipment 200 is applied as the equipment to be tested will be described as an example.

The foundation structure 100 may be disposed in a deep sea area, for example, a deep sea area having a depth of about 20 m to about 40 m so as to facilitate a test operation on the BOP equipment 200. In this case, a plurality of suction jackets 101 may be installed on the lower end surface of the foundation structure 100 so that the foundation structure 100 is fixedly installed on the bottom of the seabed.

The test well head 300 is formed to allow the BOP equipment 200 to be latched and coupled to the buoyancy structure 110. The test well head 300 is formed so that the BOP equipment 200 and the like can be latched in the same manner as the well head coupled to the upper end of the submarine well.

The buoyancy structure 110 has a buoyancy chamber C formed therein and can control its own buoyancy by introducing air or seawater into the buoyancy chamber C. The buoyancy structure 110 moves up and down from the seabed through the buoyancy control, (Not shown).

According to this structure, the drilling rig testing apparatus according to one embodiment of the present invention includes a test well head 300 coupled to the buoyancy structure 110 and fixed to the foundation structure 100 of the seabed together with the buoyancy structure 110 In this state, the BOP equipment 200 is submerged into the test well head 300, and in this state, an operational test for the BOP equipment 200 can be performed in water. The BOP equipment 200 can be operated in such a manner that the BOP equipment 200 is coupled to the lower end of the riser 220 and the riser 220 is extended downward from the borehole 210 have.

The operational test for the BOP equipment 200 may include a wide variety of tests including, for example, landing tests for the BOP equipment 200 test wellhead 300, emergency separation tests, operational tests, Water leakage test, mud circulation test, and the like.

The landing test is to test whether the BOP equipment 200 is normally latched to the test well head 300 in the process of latching the BOP equipment 200 to the test wellhead 300. The emergency separation test is to test whether the BOP equipment 200 normally separates into a lower stack and an upper LMRP (Lower Marine Riser Package) in an emergency situation such as a gas explosion. The operation test is to test whether the plurality of RAM devices and the annular devices provided in the BOP device 200 are operating normally or whether the various additional devices are operating normally. The internal pressure test is to test the normal operation of the BOP equipment 200 by supplying high-pressure fluid to the inner bore holes of the BOP equipment 200. The leak test is to test the leak of various pipes and valves connected to the BOP equipment 200. The mud circulation test is to test whether the mud liquid supplied from the drill ship is circulated back to the drill ship via the test well head 300 and the BOP equipment 200. [

Such an operation test may be performed independently of each test, but a plurality of tests related to each other may be performed simultaneously. In addition, the operation and the operation of the actual BOP equipment 200 may be tested as a whole, The test may be performed in a form of an integrated operation test in which the state, etc., can be tested.

Therefore, the drilling equipment testing apparatus according to the embodiment of the present invention is not operated on the ground unlike the prior art, but is mounted on the test well head 300 installed on the floor of the seabed, Because it can be done in a submarine environment similar to the environment, the accuracy and reliability of the operational test results of the drilling rig can be further improved.

The test well head 300 may be formed in the form of a dummy wellhead to which the BOP equipment 200 can be latched, or may be formed in the form of a test stump to allow an internal pressure test on the BOP equipment 200, In order to perform both the landing test and the withstand pressure test as described above, it is preferable that the BOP equipment 200 is formed in the form of a test stump capable of supplying internal pressure.

That is, when the test well head 300 is formed in a test stamper shape, a separate bore hole is formed in the test well head 300, so that the inner space is coupled with the BOP equipment 200 And an internal pressure test can be performed by supplying an internal pressure to the BOP equipment 200 through the test well head 300.

The apparatus for testing a drilling rig according to an embodiment of the present invention includes an internal pressure supply unit (not shown) for supplying a high-pressure fluid to the test well head 300 so that internal pressure is delivered to the BOP equipment 200 through the test well head 300 500 may be further provided. The pressure-resistant supply unit 500 may be configured to supply high-pressure fluid so that the internal pressure of the BOP equipment 200 is so high that a pressure occurring when a gas explosion occurs in the oil well, for example, a pressure of 15,000 psi or more.

The internal pressure supply unit 500 includes an internal pressure supply pump 510 provided on a separate installation support line 700 for supplying a high-pressure fluid, and an internal pressure supply unit 500 for connecting the internal pressure supply pump 510 and the test well head 300 And a connection line 520. In this way, the pressure-resistant supply unit 500 may be provided on a separate installation support line 700, but it may be configured by using a test pump or the like installed in the drill pipe 210.

At this time, the withstand pressure test is performed by operating the ram (Ram), the annular valve and various valves constituting the BOP equipment 200 in the state of providing the internal pressure to the BOP equipment 200 through the internal pressure supply unit 500, It may proceed in a manner that performs an internal pressure test.

The test well head 300 may be configured as a test stamper to supply the high-pressure fluid to the test well head 300 through the internal pressure supply unit 500, Alternatively, the test well head 300 may be formed in the form of a dummy well head, and a high pressure fluid may be supplied through the kill and choke lines (not shown) of the BOP equipment 200, It can also deliver internal pressure to the equipment.

Next, the configuration of the buoyancy structure 110 will be described in more detail.

2, in order to fix the buoyancy structure 110 in a state where the buoyancy structure 110 is seated on the foundation structure 100, the foundation structure 100 is provided with a fixing lock device 102 Can be mounted. The fixed locking device 102 may be formed in various shapes such as a latching coupling structure.

2 and 3, a buoyancy chamber C is formed in the buoyancy structure 110. The buoyancy chamber C includes an air port 111 for supplying and discharging air to and from the buoyancy chamber C, A seawater port 112 is formed to supply and discharge seawater to the chamber C. At this time, the air port 111 is connected to an air compressor 760 through which air can be supplied and sucked, through an air flow pipe 761. This air compressor 760 is mounted on a separate installation support line 700 .

The air port 111 is provided with an air opening and closing valve 113 capable of opening and closing the air port 111 and a seawater opening and closing valve 114 capable of opening and closing the seawater port 112, And a differential pressure valve 115 can be mounted. The air on / off valve 113 is a valve for injecting air in conjunction with the operation state of the air compressor 760. The seawater on / off valve 114 is provided to allow the seawater to flow as the buoyancy structure 110 is introduced into the seabed When the buoyant structural body 110 is put into the seabed, it is always kept open. The differential pressure valve 115 operates to allow the seawater to flow from the high pressure to the low pressure due to the difference between the internal pressure of the buoyancy chamber C and the external pressure. That is, when the buoyancy structure 110 is introduced into the seabed, the external pressure is increased and the external seawater flows into the buoyancy chamber C, and when the buoyancy structure 110 is to be recovered upward, The internal pressure is increased and the internal seawater is discharged through the seawater port 112 to the outside.

The buoyant force of the buoyancy structure 110 can be adjusted by adjusting the amount of air and sea water injected into the buoyancy chamber C in this manner, .

Accordingly, the drilling rig testing apparatus according to an embodiment of the present invention includes a test well head 300 coupled to the buoyancy structure 110 and freeing the test well head 300 through self-buoyancy control of the buoyancy structure 110 Thereby making it possible to conveniently move the test apparatus without a separate conveying device or the like and to carry out the test at various places without any particular restriction on the test place.

4, the foundation structure 100 is installed on the bottom of the seabed, and in this state, the bore of the buoyant structural body 110 The buoyant structure 110 is moved downwardly through buoyancy control to seat the buoyancy structure 110 and the test well head 300 to the foundation structure 100 of the undersea. At this time, buoyancy control of the buoyancy structure 110 may be performed through the air compressor 760 of the installation support line 700.

Thereafter, the BOP equipment 200 is connected to the lower end of the riser 220 of the drill ship 210, the riser 220 is extended downward as shown in FIG. 5 to lower the BOP equipment 200 to the sea floor, To the test well head 300 as shown in FIG. Of course, the BOP equipment 200 may be moved downward to the floor by using a separate crane or the like. In order to perform the installation work on the BOP equipment 200 in a similar manner to the actual environment, And moves downward together with the first and second elastic members 220 and 220.

In the process of latching the BOP equipment 200 to the test well head 300, a landing test can be performed on the BOP equipment 200, and the inner pressure supply unit 500 mounted on the installation support line 700 can perform the landing test. Pressure test can be performed by supplying the high-pressure fluid to the BOP equipment 200 using the high-pressure fluid.

When the BOP equipment 200 is connected to the riser 220 and is connected to the test well 300, the BOP equipment 200 can be connected to the riser 220 during the operation test of the BOP equipment 200 At this time, the riser 220 is connected to a separate riser tensioner (not shown) so that the tension of the riser 220 is supported and the up and down vibration of the riser 220 can be compensated. That is, the drill rig 210 and the riser 220 continuously vibrate in the vertical direction due to the influence of the marine environment such as wind or waves. When the riser 220 vibrates up and down, the BOP equipment A separate riser tensioner may be provided to compensate for the upward and downward vibrations of the riser 220 and to support the tension of the riser 220 since the test operation of the riser tensioner 200 may be impossible or very difficult, (210) and coupled to the riser (220).

The drilling rig testing device according to an embodiment of the present invention may be configured to further perform a riser tensioner test to test the operating condition of the riser tensioner as part of an integrated operational test for the BOP equipment 200. [ Such a riser tensioner test may be performed in various manners, such as by causing the riser 220 to vibrate in a manner that moves the riser 220 up and down to test whether the riser tensioner is operating normally .

The mud circulation test may also be performed using the riser 220 wherein the test well head 300 is configured such that the mud liquid supplied from the drill rig 210 to the test well head 300 is supplied to the test well 300, And can be returned to the drilling line 210 through the BOP equipment 200 and the riser 220. [ Therefore, the mud circulation test is performed by inserting a separate test pipe (not shown) in the internal space of the riser 220 so as to extend from the drill rig 210 to the test well head 300, The mud liquid may be supplied to the dredging unit 300.

That is, when supplying the mud liquid to the test well head 300 through the inner space of the test pipe, the mud liquid circulates in the test well head 300 and flows into the inner bore hole space of the BOP equipment 200, , The mud liquid flows into the space between the outer circumferential surface of the test pipe and the inner circumferential surface of the bore hole of the BOP equipment 200 and then upwardly moves along the space between the outer circumferential surface of the test pipe and the inner circumferential surface of the riser 220, .

In this manner, the circulation of the mud fluid is performed by circulating the mud fluid, and the circulation test of the mud fluid is performed by a method of checking whether the mud fluid circulates in the original circulation process.

In the above description, only the BOP equipment 200 has been described as a target equipment. However, various drilling equipment used in the deep sea environment such as Christmas tree can be applied in addition to the BOP equipment 200. In addition, It will also be able to perform integrated operation tests including tree equipment tests. Here, the integrated operation test may be configured to include all system operations from departure to mission return to return.

FIG. 7 is a plan view schematically showing a configuration of a line for installing a BOP test apparatus according to an embodiment of the present invention.

The BOP test device installation support line 700 according to an embodiment of the present invention is a vessel for installing a BOP test device for testing the BOP equipment 200 at the seabed at the bottom of the seabed.

A well head mounting portion 750 may be formed on the mounting support line 700 so as to mount a test well head 300 to which the BOP equipment 200 is latchably coupled. Various types of test well heads 300 that can be used according to the test work environment can be placed in the well head mount portion 750 and winch wires 710 capable of carrying the test well head 300 on a ship Can be mounted.

An A-frame 701 is formed on the forward side of the hull so that the winch wire 710 can be supported by the A-frame 701 and extend downward to the bottom of the seabed.

In addition, the hull can be provided with an internal pressure supply unit 500 for supplying internal pressure to the BOP equipment 200 disposed on the seabed as described above. The internal pressure supply unit 500 may include an internal pressure supply pump 510 for supplying a high pressure fluid and an internal pressure connection line 520 connected to the internal pressure supply pump 510 and wound on a separate take- have. The internal pressure supply pump 510 and the take-up reel 521 may be disposed adjacent to each other on the forward side of the hull, and the internal pressure supply pump 510 may be a hydraulic pressure unit (HPU) Can be used. The internal pressure supply pump 510 performs a function of providing a pressure of 15,000 psi or more to the BOP equipment 200 and performs various hydraulic pressure supply functions such as a hydraulic pressure supply function for latching operation of the test well head 300 can do.

In addition, when the test well head 300 is installed on the bottom of the sea floor through the buoyancy structure 110 as described above, an air compressor 760 for injecting air to adjust the buoyancy of the buoyancy structure 110 is provided .

A sub-mount 720 may be formed on the side edge of the hull to mount an unmanned ROV (Remotely Operated Vehicle).

In addition, the mud circulation test may be performed during the test process for the BOP equipment 200 described above. Since the mud used in the process is discarded, the installation support line 700 stores a mud A tank 730 may be provided. In addition, a bulk storage system 740, which can store or transport various bulk required for BOP testing procedures or other ship operations, may be provided.

A crane 770 can be mounted on the side edge portion of the hull so that various equipment or articles can be carried within the hull.

In this case, a separate power generator 780 may be provided for supplying power to various devices in the barge, and the BOP testing device may be installed on the bottom of the sea floor The thrust 790 can be mounted to control the position of the hull during the process of installing the hull. These thrusts 790 can be mounted on the lower portion of the hull in four directions, respectively.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: foundation structure 110: buoyancy structure
111: air port 112: sea port
200: BOP equipment 210: drill rig
220: riser 300: test well head
500: internal pressure supply unit 510: internal pressure supply pump
520: pressure-resistant connection line 521:
700: Installation support line 701: A-frame
710: Winch wire 760: Air compressor
770: Crane

Claims (11)

A drilling rig test apparatus for testing a drilling rig used in a deep sea environment,
A foundation structure installed on the bottom of the sea floor;
A test well head formed to allow the device under test to be latched; And
A buoyancy structure which is formed so as to be able to move up and down in the seabed by the buoyancy force to be able to be seated on the foundation structure
Wherein the test well head is coupled to the buoyancy structure and is seated in the foundation structure together with the buoyancy structure,
Wherein the test equipment is coupled to the test well head located on the seabed so that the operation test of the test equipment is performed in water. The method according to claim 1,
Wherein the equipment to be tested is applied as a BOP equipment. 3. The method of claim 2,
Wherein the BOP equipment is connected to a lower end of a riser extending from a separate drill ship located in the sea to the seabed and is moved downward with the riser and latched to the test wellhead. The method of claim 3,
Wherein the operation test includes at least one of a landing test, an emergency separation test, an operation test, an internal pressure test, a leakage test and a mud circulation test for the test well head of the BOP equipment. 5. The method of claim 4,
Further comprising an internal pressure supply unit for supplying a high-pressure fluid to the BOP equipment and performing an internal pressure test on the BOP equipment. 6. The method according to any one of claims 1 to 5,
Wherein the foundation structure is provided with a securing locking device capable of securing the buoyancy structure in a state where the buoyancy structure is seated on the foundation structure. 6. The method according to any one of claims 1 to 5,
Wherein the buoyancy structure has a buoyancy chamber therein,
Wherein the buoyancy structure includes an air port capable of supplying and discharging air to and from the buoyancy chamber and a seawater port capable of supplying and discharging seawater to and from the buoyancy chamber. 8. The method of claim 7,
Wherein the air port of the buoyant structure is connected to an air compressor capable of supplying and sucking air through a separate air flow pipe. 9. The method of claim 8,
Wherein the air port is equipped with an air opening / closing valve capable of opening and closing the air port, and a seawater opening / closing valve and a differential pressure valve capable of opening / closing the sea port are mounted on the seawater port. 10. The method of claim 9,
The air compressor is provided on a separate installation support line,
Wherein the buoyancy structure is seated on the foundation structure by the installation support line. A method of testing drilling equipment for testing drilling equipment used in a deep sea environment,
Installing a foundation structure on the bottom of the seabed;
Coupling a test well head formed to allow the device under test to be latched to a separate buoyancy structure and seating the buoyancy structure and the test well head on the foundation structure through buoyancy control on the buoyancy structure; And
Injecting the device under test into the seabed and latching the test well to the test well head
Wherein the operational test for the equipment under test is performed in water.

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