KR101527838B1 - Drilling Equipment Test System and Method - Google Patents

Abstract

The present invention relates to a system and method for testing drilling equipment, and it is possible to perform various tests by exposing drilling equipment used in a deep sea environment such as BOP equipment to conditions similar to deep sea environment, The test well head is placed on the seabed and the test well head placed on the seabed is drilled to the drilling equipment It is possible to perform the operation test of the drilling equipment at the seabed so as to improve the accuracy and reliability of the drilling equipment test, and in particular, it is possible to combine the test well head with the well head of the existing installed borehole It is not only easy to install the test wellhead, It provides further drilling equipment testing system and method that can perform the test operation of a variety of ways.

Description

[0001] DRILLING EQUIPMENT TEST SYSTEM AND METHOD [0002]

The present invention relates to a drilling rig testing system and method. More specifically, drilling equipment used in a deep sea environment such as BOP equipment can be exposed to similar conditions in deep water environment, so that various tests can be performed, thereby preventing and managing troubles of drilling equipment in advance. By allowing the test well head to be placed on the seabed and latching the drilling rig to the test wellhead placed on the seabed, it is possible to perform the drilling rig installation and operation process smoothly and quickly at the actual installation site, The operation test of the equipment can be performed at the seabed so that the accuracy and reliability of the drilling equipment test can be improved. In particular, by using the test well head in combination with the wellhead of the existing installed borehole, Not only is this easy to do, but also uses a closed borehole to perform a variety of testing tasks It relates to the drilling rig testing system and method.

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 a device to safely remove the high pressure gas generated during the drilling process and prevent the gas ejection pressure of the submarine wells from rising to the drilling line. It is connected through the riser from the marine drilling facility to the upper well And is attached to the head.

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 expose drilling equipments used in a deep sea environment such as BOP equipment to various conditions, The present invention provides a drilling equipment testing system and method that can prevent and manage problems with equipment 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.

It is another object of the present invention to provide a test wellhead which can be placed on the seabed and latching the drilling rig to the test wellhead placed on the seabed so that the operation test of the drilling rig can be performed at the seabed, The accuracy and reliability can be improved. In particular, by using the test well head in combination with the wellhead of the existing installed borehole, not only the test wellhead installation work is easy, but also, And to provide a drilling rig test system and method capable of performing the drilling rig test.

The present invention relates to a drilling rig test system for testing a drilling rig used in a deep sea environment, the drilling rig test system comprising: a test well head coupled to a wellhead of a preformed closed borehole at the bottom of the seabed; Up and down means for moving the test target equipment downward to the sea floor so that the test target equipment is latched to the test well head; And a control chamber for controlling the operation of the test target device and monitoring the operation status of the test target device so as to perform an operation test on the test target device, and latching the test target device to the test well head, And the test is performed at the seabed.

Wherein the test well head is coupled to an upper portion of the wellhead of the closed borehole; And a test stump mounted on the top of the well head adapter and configured to latch the test object.

In addition, the well head adapter may be configured to be engaged and disengaged from the well head of the closed borehole by hydraulic pressure.

In addition, the equipment under test can be applied as BOP equipment.

The lifting means may include a riser whose lower end is coupled to the BOP equipment and extends downward from a separate drill ship to move the BOP equipment downward.

In addition, the control room may be installed on the drill rig.

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.

Further, the apparatus may further include an internal pressure supply unit for supplying a high-pressure fluid to the inner BOP bore of the BOP equipment, and the internal pressure test may be performed through the internal pressure supply unit.

In addition, the pressure-resistant supply unit may be configured to supply a high-pressure fluid to the BOP bore hole through the kill line and the choke line of the BOP equipment.

The test well head further includes a well head adapter coupled to an upper portion of the well head of the closed borehole; And a test stump mounted on an upper portion of the well head adapter, the test stump configured to latch the BOP equipment, wherein the pressure resistant supply unit is configured to apply a high pressure to the BOP bore through a fluid flow path formed inside the test stump May be formed to supply fluid.

The riser may also be coupled to a separate riser tensioner, and the operational test may include a riser tensioner test to test an operating condition for the riser tensioner.

The mud circulation test is performed by inserting a drill pipe along the inner space of the riser from the drill pipe, feeding the mud liquid to the test well head side through the drill pipe, and then circulating the drill pipe back to the drill pipe .

Further, it can be configured to perform a drilling test or a cementing test using the closed borehole.

According to another aspect of the present invention, there is provided a drilling equipment testing method for testing a drilling equipment used in a deep sea environment, the method comprising: combining a separate test wellhead in a well of a closed borehole formed on the bottom of the sea floor; And moving the test target equipment downward to the sea floor and latching the test target well to the test well head, wherein the operation test of the test target equipment is performed at the seabed.

Wherein the test well head is coupled to an upper portion of the wellhead of the closed borehole; And a test stump mounted on the top of the well head adapter and configured to latch the test object.

In addition, the well head adapter may be configured to be engaged and disengaged from the well head of the closed borehole by hydraulic pressure.

In addition, the equipment 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.

In addition, the drilling equipment testing method may further include a drilling test using the closed borehole.

Wherein performing the drilling test comprises separating the BOP equipment from the test wellhead and then separating the test wellhead from the wellhead of the spent borehole; Latching the BOP equipment to the wellhead of the closed borehole; And drilling the inner space of the closed borehole by inserting a drill pipe along the riser from the drilling line.

The cementing test for filling the drilling hole formed in the inside of the closed borehole with the cement can be performed through the drilling test process.

According to the present invention, drilling equipment used in deep sea environment such as BOP equipment can be exposed to conditions similar to deep-sea environment and various tests can be performed, thereby preventing and managing problems with drilling equipment in advance, It is possible to smoothly and quickly perform the installation and operation of the drilling equipment in the same actual installation site.

In addition, by allowing the test wellhead to be located on the sea bed and latching the drilling rig to the test wellhead located on the seabed, operational testing of the drilling rig can be performed at the seabed, providing accurate and reliable drilling rig testing In particular, by using a test well head in combination with a wellhead of a previously installed closed borehole, it is possible to easily perform a test wellhead installation work and to perform a more various test work using a closed borehole There is an effect.

1 is a conceptual diagram schematically showing a configuration of a drilling rig test system according to an embodiment of the present invention;
FIG. 2 is a conceptual diagram schematically showing a coupling structure for a test wellhead of a drilling rig test system according to an embodiment of the present invention,
3 and 4 are conceptual views schematically showing a pressure test process using a drilling rig test system according to an embodiment of the present invention,
5 to 8 are conceptual diagrams schematically illustrating a drilling test process using a drilling rig test system 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 equipment test system according to an embodiment of the present invention. FIG. 2 is a schematic view showing a schematic structure of a drilling equipment test system for a test wellhead according to an embodiment of the present invention. FIGS. 3 and 4 are conceptual diagrams schematically illustrating an internal pressure test process using a drilling equipment testing system according to an embodiment of the present invention. Referring to FIG.

A drilling equipment test system according to an embodiment of the present invention is a test system capable of performing various types of tests by exposing a drilling equipment used in a deep sea environment to an environmental condition similar to a deep sea environment, A test well head 300 formed to be fixed to the bottom of the seabed E so as to be capable of latching the test target equipment to the test well head, And a control room 600 for controlling the operation of the equipment under test and monitoring the operation status of the equipment under test so that the operation tests can be performed.

At this time, the process of fixing the test well head 300 to the bottom of the seabed is performed by inserting the test well 300 (300) into the well head E2 of the closed borehole E1 formed in the bottom of the seabed E according to the embodiment of the present invention ) Are combined. That is, it is possible to test the drilling equipment by combining a separate test well head 300 with the well head E2 installed in the dry well.

The dry well refers to a well that has undergone a drilling operation but has no oil or gas found in the well (oil well) or lacks economic value. Such a dry well has a basic casing P is completed, and the well E2 remains on the upper portion of the well E1, but the inner space of the well is filled with cement and is kept in a completely closed state. At this time, the inner space of the well head can also be filled with cement at the same time. Such a dry well may be used after being drilled again if necessary.

The drilling rig test system of the present invention is equipped with a test well head 300 at the bottom of the sea floor in such a manner as to couple the test well head 300 to the well head E2 provided above the dry well, And use it to perform operational tests on the drilling rig. Of course, it is possible to perform the operation test on the drilling equipment by directly applying the well head E2 installed on the upper part of the closed borehole E1 as a test wellhead without installing a separate test wellhead, Since the installed wellhead E2 is generally unusable or unusable due to severe damage, various operation tests may not be possible when using the wellhead E2. Therefore, in an embodiment of the present invention, a separate test wellhead 300 may be used as a closed borehole And to perform various operational tests on the device under test using such a test well head 300. [

The equipment to be tested may be equipment used in a deep sea environment, for example, a BOP equipment 200 that is latched to the upper wellhead of a seabed well to prevent internal gas explosion of the seabed well. 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 test well head 300 is coupled to the wellhead installed above the existing closed borehole E1 as described above, and the BOP equipment 200 is latched and coupled in the same manner as the wellhead coupled to the top of a conventional submarine well Respectively.

The test well head 300 includes a well head adapter 310 coupled to an upper portion of the well head E2 of the closed borehole E1 and an upper portion of the well head adapter 310 mounted on the upper portion of the well head adapter 310, And a test stump 320 formed so as to be formed. Generally, drilling equipment such as BOP equipment 200 is equipped with a well head connector 330 at the bottom so that it can be latched with the well head, which test stump 320 allows the well head connector 330 to be latched To be combined. Likewise, the well head adapter 310 is formed in the same shape as the well head connector 330 and is formed to be easily latchable to the well head E2 of the closed borehole E1.

That is, the test well head 300 is provided with a well head adapter 310 at the lower end thereof and is easily latched to the well head E2 of the closed hole E1. At the same time, the BOP equipment 200 is connected to the well head E2, The test stamper 320 is mounted to facilitate latching engagement through the connector 330. At this time, the well head adapter 310 and the test stump 320 may be integrally formed or separately formed and coupled to each other.

At this time, the well head adapter 310 may be configured to be coupled to and disengaged from the well head E2 of the closed hole E1 by hydraulic pressure. To this end, the well head adapter 310 is provided with A separate hydraulic supply line 311 may be connected from a separate hydraulic supply (not shown).

The elevating means may include a riser 220 coupled to the BOP equipment 200 at the lower end and extending downward from the drill rig 210 to move the BOP equipment downward. That is, the BOP equipment 200 is coupled to the lower end of the riser 220, moves up and down with the riser 220, moves downwardly coupled to the riser 220, and is latched to the test well 300 .

The control room 600 is preferably installed in the drill pipe 210 for controlling the operation of the BOP equipment 200 and monitoring the operation state of the drill pipe. It is preferable that the control chamber 600 is used.

The control room 600 can be configured to monitor the operation of the BOP equipment 200 as well as to control the operation of the devices for various tests including the BOP equipment 200 and the pressure supply unit 500 And may be connected to the BOP equipment 200 through a riser 220. Of course, the control chamber 600 may be disposed at the drill pipe 210, but may be disposed at various places such as a separate sea structure or a land adjacent to the sea.

According to such a structure, the drilling equipment test system according to an embodiment of the present invention includes a test well head 300 installed on the bottom of the sea floor, various drilling equipments such as the BOP equipment 200, 300 may be operated under test in the BOP equipment 200 in latched condition.

Particularly, in the process of installing the test well head 300 on the bottom of the sea floor, the test well 300 is simply installed on the upper part of the well head E2 of the existing closed borehole E1, The test well head 300 can be installed in a manner that the test well head 300 is coupled to the test well 300. Thus, the test work can be performed more easily and quickly. Further, by providing the test well head 300 above the closed borehole E1, additional operational tests using the closed borehole E1 can be performed, and an environment more similar to the actual well environment can be created. Accurate and versatile testing is possible.

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 whether the BOP equipment 200 is operating normally by supplying a high-pressure fluid to the inner BOP bores 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, in the drilling equipment test system according to the embodiment of the present invention, the operation test of the drilling equipment is not performed on the ground unlike the prior art, but is actually installed in the test well head 300 installed on the bottom of the sea floor 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 well head to which the BOP device 200 may be latched. However, in an embodiment of the present invention, And a stump 320. The test stump 320 may be used to perform both the landing test and the withstand voltage test.

That is, when the test well head 300 is formed to include the test stump 320, a separate fluid flow path 321 is formed inside the test well head 300, more specifically, the test stump 320 And the inner space is coupled to communicate with the BOP equipment 200 in a mutually latched state. According to this structure, the inner pressure can be supplied to the BOP equipment 200 through the test well head 300 to perform the inner pressure test have.

The drilling rig testing system according to an embodiment of the present invention may further include an internal pressure supply unit 500 for supplying a high-pressure fluid to the inner BOP bore hole 201 of the BOP equipment 200. 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 for supplying a high pressure fluid and an internal pressure supply pump 510 for supplying high pressure fluid to the BOP bore hole 201 of the BOP equipment 200 And an internal voltage connection line 520. In order to operate the submersible pump, a separate electric cable and a power supply cable are connected to the drill pipe 210 for operating the submerged pump. In this case, the submerged pressure supply pump 510 may be a submerged pump, Lt; / RTI >

In addition, the pressure-resistant supply unit 500 may be configured to supply seawater to the BOP equipment 200 at a high pressure by using an underwater pump as described above. Alternatively, the pressure-resistant supply unit 500 may be provided with a separate underwater compressor And the gas may be supplied to the BOP equipment 200 at a high pressure. Alternatively, a test pump (not shown) provided in the drill pipe 210 may be used, or a test compressor (not shown) installed in the drill pipe 210 may be used, without installing a separate underwater pump or an underwater compressor will be.

The internal pressure test process is a process of supplying internal pressure to the internal BOP bore hole 201 of the BOP equipment 200 through the internal pressure supply unit 500 and controlling the internal pressure of the ram 200a, An annular valve, various valves, etc., and an internal pressure test.

3, the internal pressure supply unit 500 supplies a high-pressure fluid directly to the BOP borehole 201 of the BOP equipment 200 to apply pressure to the BOP equipment 200. As a result, As shown in FIG.

In this case, the pressure-resistant supply unit 500 can be formed to supply high-pressure fluid to the BOP borehole 201 through the kill line and choke line 205 of the BOP equipment 200. That is, the internal pressure connection line 520 of the internal pressure supply unit 500 is connected to the kill line and choke line 205 of the BOP equipment 200 to supply the high pressure fluid to the BOP bore hole 201, Can be supplied. At this time, the fluid flow path 321 formed in the test stamper 320 of the test well head 300 is kept closed through a separate on-off valve (not shown) or the like.

3, a separate drill pipe 202 is inserted along the inner space of the riser 220 from the drill string 210 to extend downward, and then a specific one of the plurality of ram devices 200a 200a is operated to close the BOP bore hole 201 and in this state the high pressure fluid is supplied to the BOP bore hole 201 from the internal pressure supply unit 500 through the kill line and choke line 205, The normal operation state of the device 200a can be tested. That is, it is possible to test whether or not the ram device 200a can withstand the high pressure and close the BOP borehole 201 or the like.

4, the pressure supply unit 500 supplies the high-pressure fluid to the test well head 300, and the high-pressure fluid is supplied to the BOP equipment 200 through the test well head 300 To the BOP bore holes 201 of the BOP 201. [

That is, since the test well head 300 is configured to include the test stump 320, the internal pressure connection line 520 of the internal pressure supply unit 500 is connected to the fluid flow path 321 of the test stump 320 Pressure fluid is supplied to the BOP borehole 201 through the test stamper 320. The internal pressure of the BOP borehole 201 may be supplied through the test stump 320. [

In this case as well, the drill pipe 202 is inserted to extend downward, and the specific ram device 200a among the plurality of ram devices 200a is operated to close the BOP bore hole 201, and in this state, 500 can supply a high-pressure fluid to the BOP bore hole 201 through the test stamper 320 to test the normal operation state of the ram device 200a.

Meanwhile, the BOP equipment 200 can be seated in the test well head 300 in the same manner as that installed at the actual drilling site through the ascending / descending means. At this time, (220). 1, the BOP apparatus 200 is connected to a lower end of a riser 220 extending from a separate drill line 210 such as a league line to a seabed and moves downward together with the riser 220, To the test well head 300 located in the test well 300. 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.

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 The riser 220 is connected to a separate riser tensioner 700 so that the tension of the riser 220 is supported and the up and down vibrations of the riser 220 are 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 700 is provided to compensate for the up-and-down vibration of the riser 220 and to support the tension of the riser 220, since the test operation of the riser 200 may be impossible or very difficult. The riser tensioner 700 is mounted on the drill rig 210 and coupled to the riser 220.

The drill rig testing system in accordance with an embodiment of the present invention may be configured to further perform a riser tensioner test to test the operating condition for riser tensioner 700 as part of an integrated operational test for BOP equipment 200. [ Such a riser tensioner test may be performed in a variety of ways 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 700 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 string 210 to the test well head 300 side, So that it can be returned to the drilling line 210 through the BOP equipment 200 and the riser 220. The mud circulation test thus involves the insertion of a separate drill pipe 202 into the internal space of the riser 220 to extend from the drill rig 210 to the test well head 300 and to the test well head 300) by supplying the mud liquid.

That is, when the mud liquid is supplied to the test well head 300 side through the inner space of the drill pipe 202, the mud liquid circulates in the test well head 300 and flows into the inner bore hole space of the BOP equipment 200 At this time, the mud liquid flows into the space between the outer circumferential surface of the drill pipe and the inner circumferential surface of the bore hole of the BOP equipment 200, and then moves upward along the space between the outer circumferential surface of the drill pipe and the inner circumferential surface of the riser 220, .

The mud liquid circulation test is performed by circulating the mud liquid in this manner. The mud liquid circulation test is performed by a method of checking whether the mud liquid circulates smoothly during the circulation of the mud liquid.

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.

5 to 8 are conceptual diagrams schematically illustrating a drilling test process using a drilling rig test system according to an embodiment of the present invention.

The drilling rig test system according to an embodiment of the present invention can perform a drilling test using the closed drilling hole E1 in addition to the operation test described above.

This drilling test procedure may proceed with the test wellhead 300 separated and removed and the BOP equipment 200 latched directly to the wellhead E2 of the closed borehole E1. 5, the BOP apparatus 200 and the test well head 300 are released from the latched state, and then the riser 220 is pulled upward for a predetermined period. From the test well head 300. At this time, the BOP equipment 200 is kept connected to the lower end of the riser 220. In this state, the test well head 300 is separated and removed from the well head E2 of the closed borehole E1. At this time, the well head adapter 310 of the test well head 300 can be disengaged from the well head E2 of the closed borehole E1 by hydraulic pressure, Can be easily separated from the well head E2 of the spent borehole E1.

After separating the test well head 300 from the well head E2 of the closed borehole E1, the riser 220 is moved downward again as shown in FIG. 6 to move the BOP equipment 200 to the closed borehole E1 to the well head E2.

When the BOP equipment 200 is latched to the well head E2 of the closed borehole E1, the drill pipe 202 is inserted along the riser 220 from the drilling line 210 to form the inner space of the closed borehole E1 Drilling can be done by drilling. 7 and 8, the drill bit 203 is coupled to the lower end of the drill pipe 202 and the drill pipe 202 is moved from the drill pipe 210 along the inner space of the riser 220 It is possible to perform a drilling operation on the inner space of the closed borehole E1 in a downwardly extending manner. At this time, since the inner space E2-1 of the well head E2 of the closed borehole E1 is also filled with cement, the drilling operation is performed in the inner space E2-1 of the wellhead E2 of the closed borehole E1, To the inner space of the closed borehole E1.

In addition, after completion of the drilling operation at a certain depth, the casing work and cementing work are performed in the same process as the general casing work and cementing work, or the drilling hole is closed by charging the cement into the drilling hole formed at a certain depth You can also perform a cementing operation, and you can also perform a cementing test on the drilling rig.

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.

200: BOP equipment 200a: Ram device
201: BOP Borehole 202: Drill pipe
203: Drill bit 205: Kill-in and choke line
220: riser 300: test well head
310: Well Head Adapter 320: Test Stump
321: fluid flow channel 330: well head connector
500: internal pressure supply unit 600: control chamber
700: riser tensioner E1: closed borehole
E2: Wellhead of a closed borehole

Claims (22)

A drilling rig test system for testing drilling equipment used in a deep sea environment,
A test well head coupled to a wellhead of a spent borehole formed in the bottom of the seabed;
Up and down means for moving the test target equipment downward to the sea floor so that the test target equipment is latched to the test well head; And
A control unit for controlling the operation of the test target equipment and monitoring the operation status of the test target equipment
Wherein the test equipment is latched to the test well head to perform an operational test on the test target equipment at the submarine. The method according to claim 1,
The test well head
A well head adapter coupled to a top of the wellhead of the closed borehole; And
A test stamper mounted on an upper portion of the well head adapter,
Wherein the drilling rig test system comprises: 3. The method of claim 2,
Wherein the well head adapter is formed to be engaged and disengaged from the well head of the closed borehole by hydraulic pressure. The method according to claim 1,
Wherein the equipment to be tested is applied as a BOP equipment. 5. The method of claim 4,
The rising /
And a riser coupled to the BOP equipment at its lower end and extending downward from a separate drill ship to move the BOP equipment downward. 6. The method of claim 5,
Wherein the control room is installed on the drill rig. 6. The method of claim 5,
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. 8. The method of claim 7,
Further comprising an internal pressure supply unit for supplying a high-pressure fluid to the inner BOP bore of the BOP equipment, wherein the internal pressure test is performed through the internal pressure supply unit. 9. The method of claim 8,
Wherein the pressure-resistant supply unit is configured to supply a high-pressure fluid to the BOP bore through a kill line and a choke line of the BOP equipment. 9. The method of claim 8,
The test well head
A well head adapter coupled to a top of the wellhead of the closed borehole; And
A test stamper mounted on an upper portion of the well head adapter and configured to latch the BOP equipment;
Pressure supply unit is configured to supply a high-pressure fluid to the BOP bore through a fluid flow path formed inside the test stump. 8. The method of claim 7,
The riser is coupled to a separate riser tensioner,
Wherein the operational test comprises a riser tensioner test for testing an operating condition for the riser tensioner. 8. The method of claim 7,
The mud circulation test is carried out in such a manner that a drill pipe is inserted along the inner space of the riser from the drill pipe and the mud liquid is supplied to the test well head side through the drill pipe and then circulated to the drill pipe again Drilling rig test system. 8. The method of claim 7,
And a drilling test or a cementing test is performed using the spent borehole. A method of testing drilling equipment for testing drilling equipment used in a deep sea environment,
Coupling a separate test wellhead to the wellhead of the closed borehole formed in the bottom of the seabed; And
Moving the device under test downward into the sea bed and latching it to the test wellhead
Wherein the operational test of the equipment under test is performed at the seabed. 15. The method of claim 14,
The test well head
A well head adapter coupled to a top of the wellhead of the closed borehole; And
A test stamper mounted on an upper portion of the well head adapter,
Wherein the drilling equipment test method comprises the steps of: 16. The method of claim 15,
Wherein the well head adapter is formed to be engaged and disengaged from the well head of the closed borehole by hydraulic pressure. 17. The method according to any one of claims 14 to 16,
Wherein the equipment to be tested is applied as a BOP equipment. 18. The method of claim 17,
Wherein the BOP equipment is connected to a lower end of a riser extending from a separate drill ship in the sea to the seabed and is moved downward with the riser and latched to the test wellhead. 19. The method of claim 18,
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. 19. The method of claim 18,
Further comprising the step of performing a drilling test using said closed borehole. 21. The method of claim 20,
The step of performing the drilling test
Separating the BOP equipment from the test wellhead and then separating the test wellhead from the wellhead of the spent borehole;
Latching the BOP equipment to the wellhead of the closed borehole; And
Drilling the inner space of the closed borehole by inserting a drill pipe along the riser from the drilling line
Wherein the drilling equipment test method comprises the steps of: 22. The method of claim 21,
Wherein the cementing test is performed to fill the drilling hole formed in the inside of the closed borehole with the cement through the drilling test process.

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