KR20140122163A - Test Apparatus and Method for Drilling Equipment - Google Patents

Abstract

The present invention relates to a drilling equipment test apparatus and a method thereof. The present invention exposes drilling equipment, such as BOP equipment used in a deep sea environment, in an environment similar to deep sea to perform various tests, so that it can prevent and control predicted problems in advance. In this way, in an actual site such as deep sea, installation and operation of drilling equipment can be easily and quickly made. Also, the accuracy and reliability of landing test of drilling equipment can be improved by arranging a test wellhead under the sea and combining the drilling equipment to the test wellhead arranged under the sea. In addition, the present invention can be modularized by mounting the test wellhead on a storage container, conveniently move the test apparatus by enabling the test wellhead move up and down under the sea via autonomic buoyancy control, and conveniently perform tests regardless of place.

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, 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 making it possible to smoothly and quickly perform the installation and operation of the drilling equipment at the actual installation site, by placing the test well head on the seabed and by fitting the drilling equipment to the test well head placed on the seabed, The accuracy and reliability of the landing test of the equipment can be improved and the test well can be mounted on the storage container to be modularized and can be moved up and down on the seabed by adjusting its own buoyancy, , It is convenient to test in various places without any restriction It relates to a drilling test device and method capable of performing.

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 wellhead 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 expose drilling equipments used in a deep sea environment such as BOP equipment to various conditions, The present invention provides a drilling equipment testing apparatus and method that can prevent and manage problems with equipment in advance so that installation and operation of the drilling equipment can be smoothly and quickly performed at actual installation sites such as deep sea.

Another object of the present invention is to provide a landing test for a test wellhead of a drilling rig at the sea floor by placing the test wellhead on the seabed and allowing the drilling rig to be seated on the test wellhead placed on the seabed And to provide a drilling equipment testing apparatus and method capable of improving the accuracy and reliability of a landing test.

It is another object of the present invention to provide a test well head which is mounted on a storage container to be modularized and can be moved up and down in the sea floor by adjusting its own buoyancy so that a test apparatus can be conveniently moved without a separate conveying device, And to provide a drilling equipment test apparatus and method that can conveniently perform tests in various places without any specific restriction on a test site.

The present invention relates to a drilling equipment testing apparatus for testing a drilling equipment used in a deep sea environment, in which a test chamber is formed so that the equipment to be tested can be inserted therein, and a liquid A storage container to be stored; And a test well head fixedly mounted inside the storage container so that the equipment to be tested is put in and to be seated and engaged, and a landing test for the test well head of the equipment under test is performed in water. Provides equipment testing equipment.

At this time, the storage vessel may be disposed on the seabed so that seawater is stored in the test chamber.

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

Further, the storage vessel may be formed to be movable up and down in the seabed through self-buoyancy control.

In addition, the storage vessel may have a ballast tank at one side thereof for allowing the seawater to flow in and out so that self-buoyancy can be controlled.

Further, the apparatus further includes an internal pressure supply unit for supplying a high-pressure fluid to the test well head so that internal pressure is transferred to the BOP equipment through the test well head, wherein the internal pressure test for the test object apparatus is performed through the internal pressure supply unit Can be configured to perform.

The internal pressure supply unit may be applied to any one of a test pump mounted on the drilling rig, a submersible pump mounted on the storage vessel, a test compressor mounted on the drilling rig, and an underwater compressor mounted on the storage vessel.

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

In addition, the drilling equipment testing apparatus may further include a separate control room for controlling the operation of the BOP equipment and the pressure-resistant supply unit and monitoring the operation status of the BOP equipment.

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 the steps of: placing a test well head in water; And placing the test target equipment in water and seating the test target well on the test well head, wherein a landing test for the test well head of the test target equipment is performed in water do.

At this time, the test well head may be installed in a separate storage vessel in which seawater can be stored, and may be placed on the seabed together with the storage vessel.

Further, the storage vessel may be formed to be movable up and down in the seabed through self-buoyancy control.

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

The drilling equipment testing method may further include the step of supplying a high-pressure fluid to the test well head through a separate internal pressure supply unit so that internal pressure is transferred to the BOP equipment through the test well head, Can be carried out underwater.

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

In addition, the landing test and the withstand pressure test can be performed through a separate control room, which controls the operation of the BOP equipment and the pressure-resistant supply unit and can monitor the operation state of the BOP equipment.

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.

The landing test for the test wellhead of the drilling rig can also be performed at the seabed by placing the test wellhead on the seabed and allowing the drilling rig to be seated on the test wellhead located on the seabed, Accuracy and reliability can be improved.

In addition, the test well head can be mounted on a storage container to be modularized, and the test well can be moved up and down on the seabed by adjusting its own buoyancy, so that the test apparatus can be conveniently moved without a separate conveying device or the like. It is possible to perform a test conveniently at various places without restriction.

Further, by modularizing the test well head and the internal pressure supply unit in the storage container, the mobility of the test apparatus can be improved and the internal pressure test for the drilling equipment can be conveniently performed.

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 the configuration of a drilling rig testing apparatus according to another embodiment of the present invention. FIG.
FIG. 3 is an operational flowchart schematically showing a configuration of a drilling rig test method 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.

1 is a conceptual diagram schematically showing a configuration of a drilling rig testing apparatus according to an embodiment of the present invention.

The apparatus for testing a drilling rig according to an embodiment of the present invention is an apparatus capable of performing various types of testing by exposing a drilling equipment used in a deep sea environment to environmental conditions similar to a deep sea environment, And a test well head 300 mounted inside the container 100.

The test chamber C is formed in the inner space of the storage container 100 so that the test target equipment can be inserted therein and the liquid L is stored in the test chamber C so that the test target equipment is locked. 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 storage container 100 may be formed in a variety of shapes having a test chamber C formed therein, and it is preferable that the storage container 100 is formed in a cylindrical shape considering the support strength against the internal pressure of the storage container 100 . In addition, the storage vessel 100 may be configured in such a manner that it is connected to a negative electrode power source for corrosion prevention.

1, the storage container 100 may have a top surface opened so as to form a test chamber C in an inner space thereof, and the BOP equipment 200 or Various components for testing can be put into the storage container 100.

Such a storage vessel 100 may be disposed on the seabed as shown in FIG. 1, and the storage vessel 100 may be inserted into the sea bed so that the test chamber C is filled with seawater through the open top surface . At this time, the storage container 100 may be disposed in a deep sea area, for example, a submarine area having a depth of 20 m to 40 m to facilitate the test. In this case, the storage container 100 may be partially embedded in the bottom of the sea floor, and may be installed in a fixed form. Alternatively, the storage container 100 may be installed in a movable form by adjusting its own buoyancy.

In this case, the test chamber C may be filled with the liquid using a separate pump (not shown) or the like.

In this case, the upper surface of the storage container 100 may be formed in a separate container cover (not shown). And may be configured to be hermetically coupled through a through-hole. When the storage container 100 is formed in a sealed form, a separate external pressure supply unit (not shown) is provided to raise the pressure of the liquid so that the pressure of the liquid stored in the test chamber C reaches a deep pressure . Through this external pressure supply unit, the internal liquid pressure of the storage container 100 can be formed at a pressure in deep sea conditions, for example, a pressure of 4,300 psi or more, and thus an external pressure test for BOP equipment can be performed.

The test well head 300 is placed under the inner space of the storage container 100 as shown in FIG. 1 so that the lower end of the BOP equipment 200 is seated and engaged in the state where the BOP equipment 200 is inserted into the test chamber C. And is fixedly mounted. The test well head 300 is the same as the wellhead coupled to the top of the subsea well and is fixedly mounted within the storage vessel 100 for testing on the BOP equipment 200 in one embodiment of the present invention. Accordingly, the BOP equipment 200 and the test well head 300 are coupled to each other so that the internal spaces are communicated with each other in a state where the BOP equipment 200 and the test well head 300 are latched to each other.

In this case, an internal pressure supply unit 500 may be further provided for supplying a high-pressure fluid to the test well head 300 so that the internal pressure is transferred to the BOP equipment 200 through the test well head 300. 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.

Thus, when the test well head 300 is located on the seabed with the storage vessel 100, the BOP equipment 200 can be seated in the test well head 300 in the same manner as it is installed at the actual drilling site . 1, the BOP equipment 200 is connected to a lower end of a riser 220 extending from a separate drilling facility 210 such as a league line to a seabed and moves downward together with the riser 220 to be stored May be installed into the vessel 100 and coupled to the test well head 300 within the storage vessel 100.

Of course, when the storage container 100 is located on the shore, the BOP equipment 200 may be inserted into the storage container 100 using a separate crane or the like to be coupled to the test well head 300.

According to such a configuration, the drilling equipment testing apparatus according to an embodiment of the present invention can put the BOP equipment 200 into the sea bed and put it in the test well head 300 disposed on the seabed, 200 may be performed underwater, i.e., at the seabed, for the test well head 300. The reliability of the test result can not be secured because the landing test for checking the problem occurred in the process of coupling the BOP equipment 200 to the test well head 300 was performed on the ground in the prior art, The landing test for the equipment 200 can be performed in an environment similar to the actual environment at the seabed so that the accuracy and reliability of the landing test result can be improved.

1, the internal pressure supply unit 500 includes an underwater pump 510 installed inside the storage container 100 for supplying seawater to the test well head 300 at high pressure, an underwater pump 510, And an internal voltage connection line 520 for connecting the test well head 300 with each other. The underwater pump 510 may be connected to the drilling facility 210 through a separate cable 211 and a power supply cable 212 for the operation of the underwater pump 510.

When the pressure-resistant supply unit 500 is installed in the storage container 100, the storage container 100, the test well head 300, and the pressure-resistant supply unit 500 form a single module, It is possible to perform various test operations on the BOP equipment 200 more conveniently.

Since the internal pressure test for the BOP equipment 200 through the internal pressure supply unit 500 is also performed at the seabed, the test can be performed under conditions similar to the actual installation environment, and accordingly, the accuracy and reliability Can be improved. The internal pressure test is performed by the operation of the ram Ram, the annular valve and various valves constituting the BOP equipment 200 and the internal pressure of the BOP equipment 200 while the internal pressure is supplied to the BOP equipment 200 through the internal pressure supply unit 500 The test may be performed in a manner that performs the test.

The internal pressure supply unit 500 may include a separate submerged pump 510 installed in the storage vessel 100 to supply the seawater to the BOP equipment 200 at a high pressure. Alternatively, a separate underwater compressor (not shown) installed in the storage container 100 may be provided to supply the gas to the BOP equipment 200 at a high pressure. Further, a test pump (not shown) installed in the drilling rig 210 may be used, or a test compressor (not shown) installed in the drilling rig 210 may be used, without installing a separate underwater pump or an underwater compressor. It might be.

In addition, the storage container 100 may be configured so that the test well head 300 and the pressure-resistant supply unit 500 are formed as a single module and can be conveniently carried and moved as described above. At this time, The vessel 100 can be configured to be movable up and down in the seabed through self-buoyancy control.

For example, as shown in FIG. 1, a separate ballast tank 101 may be mounted on one side of the storage vessel 100, and the ballast tank 101 may be provided with an inlet 102 And an outlet 103 may be formed. Accordingly, when the ballast tank 101 is filled with seawater, the buoyant force is extinguished and sink into the seabed. When the seawater is discharged from the ballast tank 101, buoyancy is generated and the ballast tank 101 is moved upward .

As described above, the storage container 100 constituting one module together with the test well head 300 and the pressure-resistant supply unit 500 can freely be transported and moved through the self-buoyancy control, so that it is convenient , And the test can be performed in various places without any specific restriction on the test place.

The drilling facility 210 is provided with a separate control room 200 for controlling the operation of the BOP equipment 200, the external pressure supply unit 400 and the internal pressure supply unit 500, (600) may be provided. The control chamber 600 may be connected to the BOP equipment 200 through the riser 220 and may be connected to the internal pressure supply unit 500 through a separate cable line. At this time, the control room 600 may be disposed in the drilling rig 210, but may be disposed in various places such as a separate marine structure or land adjacent to the sea.

In addition, various sensors and image equipment may be additionally installed in the storage container 100 to monitor the internal state of the storage container 100 and the operation state of the BOP equipment 200, The devices may be connected to the control room 600 to monitor the operation status of the BOP equipment 200 through the control room 600. [

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

2 is a conceptual diagram schematically showing the configuration of a drilling rig testing apparatus according to another embodiment of the present invention.

The drilling equipment testing apparatus according to another embodiment of the present invention may be configured such that the test well head 300 is simply fixed to the bottom of the seabed without a separate storage container 100 as shown in FIG. The BOP equipment 200 is seated on the seabed and the BOP equipment 200 and the test well head 300 are subjected to various tests on the BOP equipment 200 in the state where the test well unit 300 is latched by the seabed .

At this time, a separate internal pressure supply unit 500 may be provided to supply the internal pressure to the BOP equipment 200 through the test well head 300. This may include a separate submerged pump 510, And an internal voltage connection line 520.

Further, although not shown, the test well head 300 may be mounted in a separate foundation structure (not shown), and the foundation structure may be in the form of a simple frame, a plate, or the like, Or movable. In this case, the foundation structure may be equipped with the separate ballast tank 101 described in FIG. 1, and the seawater may be introduced into or discharged from the ballast tank 101 to adjust the buoyancy so that the ballast tank 101 can be moved up and down.

This configuration is the same as the configuration described with reference to FIG. 1 except that the storage container 100 is not provided, and therefore, a detailed description thereof will be omitted for the purpose of avoiding duplication of description.

The present invention can be configured in such a manner that the test operation is simply performed on the BOP equipment in the sea floor without a separate storage container.

FIG. 3 is an operational flowchart schematically showing a configuration of a drilling rig test method according to an embodiment of the present invention.

The present invention provides a method for testing a drilling rig using the drilling rig testing apparatus described in FIGS. 1 and 2, and the drilling rig testing method can be performed in the manner described with reference to FIGS. 1 and 2, and will be briefly described herein.

A method of testing a drilling rig according to an embodiment of the present invention includes the steps of placing a test well head 300 in water S1 and injecting the device under test 200 into water S2, (S4), and performs a landing test for the test well head (300) of the device under test (200) underwater (S4). At this time, the equipment to be tested may be applied to the BOP equipment 200.

In this case, the test well head 300 may be fixedly mounted on a separate storage container 100 as shown in FIG. 1, and may be placed on the seabed together with the storage container 100. Alternatively, as shown in FIG. 2, it may be fixed to the bottom of the sea floor without a storage container.

Further, although not shown, the test well head 300 may be mounted in a separate foundation structure (not shown), and the foundation structure may be in the form of a simple frame, a plate, or the like, Or movable. 1 may be installed in the foundation structure and the buoyancy of the ballast tank may be adjusted by introducing or discharging seawater into the ballast tank 101 so that the ballast tank 101 can be moved up and down have.

The present invention also provides a method of supplying high pressure fluid to a test well head 300 through a separate pressure supply unit 500 to transfer the internal pressure to the BOP equipment 200 through the test well head 300 , And may be configured to perform an internal pressure test on the BOP equipment 200 in water (S6).

The BOP equipment 200 is connected to a lower end of a riser 220 extending from a separate drilling facility 210 located in the sea to the seabed and moves downward together with the riser 220 to the inside of the storage vessel 100 And is seated and coupled to the test well head 300.

Through this process, the landing test and the withstand pressure test for the BOP equipment 200 can be performed, and the monitoring of the BOP equipment and the test can be performed through a separate control room 600. In addition, the equipment under test can be extended to a variety of deep-sea equipment used in deep water to perform integrated operation tests, including mud transport and mud circulation testing, and Christmas tree equipment testing.

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 falling within the scope of the same shall be construed as falling within the scope of the present invention.

100: pressure vessel 101: ballast tank
102: inlet 103: outlet
200: BOP equipment 210: Drilling equipment
220: riser 300: test well head
500: internal pressure supply unit 600: control chamber

Claims (9)

A drilling rig test apparatus for testing a drilling rig used in a deep sea environment,
A test chamber is formed in the test chamber so that the test target equipment can be inserted therein, and a liquid is stored in the test chamber so that the test target equipment is locked; And
A test well head which is fixedly mounted in the interior of the storage container so that the device under test
And a landing test for the test well head of the equipment under test is performed in water. The method according to claim 1,
Wherein the storage vessel is disposed in the seabed so that seawater is stored in the test chamber. 3. The method of claim 2,
Wherein the equipment to be tested is applied as a BOP equipment. The method of claim 3,
Wherein the storage vessel is configured to be vertically movable in the seabed through self-buoyancy control. 5. The method of claim 4,
Wherein the storage vessel is formed with a ballast tank at one side thereof for allowing the seawater to flow in and out so that self-buoyancy can be adjusted. 6. The method according to any one of claims 3 to 5,
Further comprising an internal pressure supply unit for supplying a high-pressure fluid to the test well head so that internal pressure is transferred to the BOP equipment through the test well head, wherein the internal pressure test is performed on the test object equipment through the internal pressure supply unit Wherein the drilling machine is capable of testing the drilling rig. The method according to claim 6,
The pressure-resistant supply unit
A test pump mounted on the drilling facility, a submerged pump mounted on the storage vessel, a test compressor mounted on the drilling facility, and an underwater compressor mounted on the storage vessel. The method according to claim 6,
Wherein the BOP equipment is connected to a lower end of a riser extending from a separate drilling facility located in the sea to the seabed and moved downward with the riser to be coupled to the test wellhead. The method according to claim 6,
Further comprising a separate control room for controlling operation of the BOP equipment and the internal pressure supply unit and for monitoring the operation status of the BOP equipment.

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