KR20150000163A - Test Apparatus and Method for Drilling Equipment - Google Patents

Abstract

The present invention relates to an apparatus and a method for testing drilling equipment. Provided is an apparatus for testing drilling equipment which can prevent and manage the problems regarding the drilling equipment beforehand, and smoothly and quickly carry out installation and operation processes of the drilling equipment at a real installation site such as deep sea, as the drilling equipment used in a deep-sea environment such as BOP equipment is exposed to a condition similar to the deep-sea environment and is carried out for various tests. In addition, the apparatus for testing the drilling equipment can quickly increase internal pressure of a pressure container by supplying high-pressure gas using liquefied gas in the pressure container wherein liquid is stored and the BOP equipment is accommodated to be submerged in the liquid, and can swiftly and conveniently operate a test. Especially, the apparatus for testing the drilling equipment can carry out the test in various methods as the liquid and the gas can be selectively supplied to the BOP equipment or both can be supplied thereto, and can test more accurately as the environment more similar to the real deep-sea environment can be realized. Provided is a method for testing the drilling equipment as well. The apparatus for testing the drilling equipment of the present invention comprises a pressure container, and a pressure supply unit. The pressure supply unit supplies high-pressure gas to a test chamber.

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. In order to smoothly and quickly perform the installation and operation of the drilling equipment at the actual installation site, a high-pressure gas is supplied to the pressure vessel accommodating the BOP equipment so that the BOP equipment is stored in the liquid, using the liquefied gas The internal pressure of the pressure vessel can be quickly raised, the test operation can be performed quickly and conveniently, and in particular, the BOP equipment can be supplied with liquid and gas selectively or both, And simulate environments that are more similar to actual deep-sea environments. Possible relates to drilling equipment testing apparatus 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 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.

Patent Registration 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 quickly raise the internal pressure of the pressure vessel by supplying a high-pressure gas using a liquefied gas to a pressure vessel in which the liquid is stored therein so that the BOP equipment is immersed in the liquid, And to provide a drilling equipment test apparatus and method capable of performing operations quickly and conveniently.

It is a further object of the present invention to provide a pressurized container which can supply pressure to the interior of a pressure vessel through a single pressure supply unit using liquefied gas and simultaneously supply internal pressure to the BOP equipment, It is an object of the present invention to provide an apparatus and a method for testing a drilling rig capable of selectively and or both supplying a liquid and a gas to test in a more various manner and to simulate an environment more similar to an actual deep water environment and thereby to perform more accurate testing.

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 pressure vessel to be stored; And a pressure supply unit for raising a pressure of the liquid so that the pressure of the liquid stored in the test chamber reaches a deep pressure, wherein the pressure supply unit supplies high pressure gas to the test chamber Device.

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

Also, a test well head may be fixedly mounted on the lower portion of the inner space of the pressure vessel so that the BOP equipment is seated.

In addition, the pressure supply unit may be configured to supply at least one of high-pressure liquid and gas to the test well head so that internal pressure is delivered to the BOP equipment through the test wellhead.

Further, an external pressure supply port is formed in the pressure vessel so that high-pressure gas can be introduced into the test chamber by the pressure supply unit, and high pressure liquid or gas is supplied to the test well head by the pressure supply unit Pressure supply port may be formed so as to communicate with the test well head.

Further, the pressure supply unit may include a liquefied gas tank for storing liquefied gas; A pressure supply pump for pressurizing and supplying the liquefied gas from the liquefied gas tank; And a heating device for vaporizing the liquefied gas supplied through the pressure supply pump to change the phase of the liquefied gas into gas in a gaseous state, and may be connected to the external pressure supply port through a separate external pressure piping line.

Further, the heating device may be applied as a heat exchanger for heat-exchanging with the liquefied gas and for heating the liquefied gas.

At this time, the heat exchanger may be configured to use seawater as a heating medium.

In addition, the heating device may include a heater coil that operates by receiving power.

The pressure supply unit may be connected to the pressure-resistant supply port through a separate pressure-resistant piping line, and the flow rate control valve may be installed in the pressure-pressure piping line and the pressure-pressure piping line, respectively.

Pressure piping line is branched from an external pressure piping line connecting the pressure supply pump and the heating device and connected to the internal pressure supply port; And a second pressure pipe line branched from an external pressure pipe line connecting the heating device and the external pressure supply port and connected to the internal pressure supply port.

According to another aspect of the present invention, there is provided a drilling equipment testing apparatus for testing a drilling equipment used in a deep sea environment, comprising: preparing a pressure vessel having a test chamber therein; Storing liquid in the test chamber; Injecting a test object to be immersed in the liquid stored in the test chamber; And supplying a high-pressure gas to the test chamber through a separate pressure supply unit to raise the pressure of the liquid stored in the test chamber.

At this time, the test target equipment may be applied as a BOP equipment, and a test well head may be fixedly mounted under the inner space of the pressure vessel so that the BOP equipment can be seated.

The drilling equipment test method may further include supplying at least one of high pressure liquid and gas to the test well head through the pressure supply unit so that internal pressure is delivered to the BOP equipment through the test well head And the like.

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.

Further, by supplying a high-pressure gas using a liquefied gas to a pressure vessel in which liquid is stored inside the BOP equipment so that the BOP equipment is immersed in the liquid, the internal pressure of the pressure vessel can be quickly raised, There is an effect that it can be conveniently performed.

Further, it is possible to simplify the structure by supplying pressure to the interior of the pressure vessel through one pressure supply unit using liquefied gas and simultaneously supplying internal pressure to the BOP equipment. In particular, the liquid and gas are selectively , Or both, so that it is possible to test in more various ways, and it is possible to simulate an environment more similar to an actual deep-sea environment, thereby enabling more accurate testing.

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 flow chart showing a stepwise configuration of a drilling equipment test method according to an embodiment of the present invention, in accordance with an operation flow.

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 drilling equipment testing apparatus according to an embodiment of the present invention is 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 and includes a pressure vessel 100, And a supply unit 400.

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

1, the pressure vessel 100 includes a container body 110 having a part of an upper surface thereof opened so as to form a test chamber C in an inner space thereof, And can be separately formed by the container cover 120 to be coupled. The liquid L can be stored in the test chamber C of the container body 110 with the container cover 120 opened through such a structure and the liquid L can be stored in the test chamber C of the BOP equipment 200 may be charged into the test chamber C so as to be immersed in the liquid L. The container body 110 may be provided with an external pressure supply port 111 and an internal pressure supply port 112 so as to be supplied with pressure from a pressure supply unit 400 to be described later. The container body 110 and the container cover 120 can be sealed with each other so that the liquid L stored in the internal test chamber C can be maintained at a high pressure state through the pressure supply by the pressure supply unit 400 .

The pressure supply unit 400 is configured to raise the pressure of the liquid so that the pressure of the liquid L stored in the test chamber C of the pressure vessel 100 reaches a pressure at a deep sea condition, for example, a pressure of 4,300 psi or more. . The pressure supply unit 400 is configured to supply a high-pressure gas to the test chamber C of the pressure vessel 100 to raise the internal pressure of the test chamber C, which will be described in detail later.

The test well 300 is placed under the inner space of the pressure vessel 100 so that the bottom end of the BOP apparatus 200 is seated and engaged with the BOP apparatus 200 being inserted into the test chamber C. And this test well head 300 can be mounted so as to be in communication with the above described pressure resistant supply port 112. [ 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 pressure vessel 100 for testing of 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.

At this time, the pressure supply unit 400 is configured to supply at least one of high-pressure liquid and gas to the test well head 300 so that internal pressure is delivered to the BOP equipment 200 through the test well head 300 . That is, the pressure supply unit 400 is configured to supply a high-pressure gas to the test chamber C to raise the internal pressure of the test chamber C as described above, So that the internal pressure of the BOP equipment 200 can be increased.

The pressure vessel 100 is provided with an external pressure supply port 111 and an internal pressure supply port 112. The external pressure supply port 111 is connected to the pressure supply unit 400 to supply a high pressure gas Pressure supply port 112 is formed to communicate with the test well head 300 so that a high-pressure liquid or gas can be supplied to the test well head 300 by the pressure supply unit 400. [ At this time, the pressure supply unit 400 is configured to supply the high-pressure fluid so that the internal pressure of the BOP equipment 200 is so high that the pressure occurring when the gas explosion occurs in the oil well, for example, a pressure of 15,000 psi or more.

A separate riser 220 is connected to the BOP equipment 200 to be inserted into the pressure vessel 100 so as to be seated on the test well head 300 to operate the BOP equipment 200 .

According to this configuration, the drilling rig testing apparatus according to the embodiment of the present invention elevates the pressure of the internal liquid L in the separate pressure vessel 100 to the deep sea pressure state of 3,000 m or more by the pressure supply unit 400 The external pressure test for the BOP equipment 200 can be performed. That is, when the BOP equipment 200 is exposed to deep pressure, it can be tested whether it is structurally stable, whether it operates normally, or whether leaks occur.

It is also possible to perform an internal pressure test of the deep sea environment for the BOP equipment 200 by providing the BOP equipment 200 with an internal pressure of at least 15,000 psi through the pressure supply unit 400. For example, it is possible to perform an internal pressure test on Ram, Annular, and various valves constituting the BOP equipment 200.

The pressure supply unit 400 includes a liquefied gas tank 410 for storing liquefied gas, a pressure supply pump 420 for pressurizing and supplying the liquefied gas from the liquefied gas tank 410, And a heating device 430 that vaporizes the liquefied gas supplied through the pressure supply pump 420 and changes the phase of the liquefied gas into gas in a gaseous state. At this time, the liquefied gas stored in the liquefied gas tank 410 may be applied as an inert or low-reacting material in a gaseous state at atmospheric pressure at room temperature. For example, nitrous oxide or nitrogen may be applied.

The pressure supply unit 400 is connected sequentially to the liquefied gas tank 410, the pressure supply pump 420 and the heating device 430 via the external pressure piping line P1, And is connected to the external pressure supply port 111 of the vessel 100.

At this time, the heating device 430 can be applied as a heat exchanger 431 that heats the liquefied gas and heats the liquefied gas. At this time, the heat medium used in the heat exchanger 431 can be applied as seawater, and the seawater is introduced into the heat exchanger 431 through a separate heat medium pipe line R, exchanged with the liquefied gas, and then discharged again . Of course, the heating device 430 may not be a heat exchanger, but may be configured in the form of a heater coil (not shown) that simply operates by receiving power.

According to this structure, the liquefied gas is pressurized from the liquefied gas tank 410 through the pressure supply pump 420 and supplied to the heating device 430, more specifically, the heat exchanger 431, and the heat exchanger 431 Liquefied gas is vaporized through heat exchange with seawater. The gaseous high pressure gas vaporized through the heat exchanger 431 is supplied to the test chamber C of the pressure vessel 100 via the external pressure supply port 111 along the external pressure piping line P2, (C) is increased.

At this time, the pressure of the test chamber C is raised to a pressure of 4,300 psi or more as described above. To increase the pressure of the test chamber C by supplying a high-pressure liquid by using a separate pump, The pressure rise operation is very difficult and the time is relatively long. However, when the liquefied gas is vaporized through the pressure supply unit 400 according to an embodiment of the present invention to supply the high-pressure gas to the test chamber C, the configuration of the pressure supply unit 400 can be relatively simplified In particular, the pressure rising operation of the test chamber C can be performed relatively quickly, thereby shortening the test time required for the BOP equipment.

The pressure supply unit 400 may be connected to the internal pressure supply port 112 via separate pressure piping lines Q1 and Q2 to supply internal pressure to the BOP equipment 200, The internal pressure can be supplied to the BOP equipment 200 while simultaneously supplying external pressure to the test chamber C using the test apparatus 400.

The internal pressure piping lines Q1 and Q2 are connected to the first pressure piping line branched from the external pressure piping line P1 connecting the pressure supply pump 420 and the heating device 430 and connected to the internal pressure supply port 112 Pressure piping line Q2 branched from the external-pressure piping line P2 connecting the heating device 430 and the external-pressure supply port 111 and connected to the internal-pressure supply port 112, .

1, a flow control valve 440 may be mounted to the external pressure piping lines P1 and P2 and the pressure piping lines Q1 and Q2, It is possible not only to control the flow rate of the gas but also to selectively open the lines to the external pressure piping lines P1 and P2 or the pressure piping lines Q1 and Q2.

That is, all the flow control valves 440 mounted on the pressure piping lines Q1 and Q2 are all operated in the fully closed state and the flow control valves 440 mounted on the external pressure piping lines P1 and P2 are both opened The gas in the gaseous state is supplied to the test chamber C along the external pressure piping line, so that the pressure of the test chamber C rises. At this time, no pressure is supplied to the inside of the BOP equipment 200.

In this state, when all the flow control valves 440 mounted on the pressure piping lines Q1 and Q2 are operated in the open state, gas is supplied to the test chamber C along the external pressure piping line, At the same time, liquid (liquefied gas) and gas are supplied to the BOP equipment 200 along the pressure piping line, and the internal pressure of the BOP equipment 200 is increased. At this time, when the flow control valve 440 on the first pressure-resistant pipe line Q1 is operated in the closed state, only the gas is supplied to the BOP equipment 200 along the second pressure-resistant pipe line Q2, Thereby increasing the internal pressure of the fuel cell. Conversely, when the flow regulating valve 440 on the first pressure-regulating line Q1 is operated in the open state and the flow regulating valve 440 on the second pressure-regulating line Q2 is operated in the closed state, the BOP equipment 200 , Only the liquid (liquefied gas) is supplied along the first pressure-resistant piping line Q1 so that the internal pressure of the BOP equipment 200 is raised.

The flow control valve 440 on the first and second pressure piping lines Q1 and Q2 is selectively opened The liquid or gas is selectively supplied to the inside of the BOP equipment 200 according to the selective opening and closing of the flow control valve 440 so that the BOP equipment 200 is increased.

Of course, in this case, it is possible to control the flow rate of the fluid flowing along each pipe line by adjusting the opening amount of the flow rate control valve 440, and to control the flow of the fluid in various ways according to the user's need.

In this way, the external pressure can be supplied to the test chamber C through the single pressure supply unit 400 or the internal pressure can be supplied to the BOP equipment 200, and the liquid and gas can be simultaneously supplied to the BOP equipment 200 And various types of tests can be performed according to the user's need.

FIG. 2 is a flow chart showing a stepwise configuration of a drilling equipment test method according to an embodiment of the present invention, in accordance with an operation flow.

A method for testing a drilling rig according to an embodiment of the present invention is a method for testing a drilling rig using the drilling rig testing apparatus described with reference to FIG. 1, and is performed in a manner similar to that described with reference to FIG. 1, For a brief review.

A method of testing a drilling rig according to an embodiment of the present invention includes a step S1 of preparing a pressure vessel having a test chamber therein, a step S2 of storing a liquid in the test chamber C, (S3) of injecting a test object to be immersed in the liquid stored in the test chamber (C), and supplying a high pressure gas to the test chamber (C) through a separate pressure supply unit (S4) of increasing the pressure of the gas.

Through this process, an external pressure test for the equipment under test can be performed, and in this case, the equipment under test can be applied to the BOP equipment 200. When the BOP equipment 200 is applied as described above, the test well head 300 is fixedly mounted on the lower portion of the inner space of the pressure vessel 100 so that the BOP equipment 200 can be seated.

The method of testing a drilling rig according to an embodiment of the present invention is a method of testing a drilling rig through a test well head 300 through a pressure supply unit 400 so that internal pressure is delivered to the BOP equipment 200 through a test well head 300, (S5) of supplying at least one of a liquid and a gas of the BOP equipment 200. The BOP equipment 200 can perform the withstand pressure test on the BOP equipment, Or both the liquid and the gas can be supplied at the same time, thereby simulating a test environment more suitable for the actual gas ejection environment.

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 200: BOP equipment
300: Test well head 400: Pressure supply unit
410: Liquefied gas tank 420: Pressure feeding pump
430: heating device 431: heat exchanger
440: Flow control valve P1, P2: External pressure piping line
Q1, Q2: Pressure piping line

Claims (14)

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 into the test chamber, and a liquid is stored in the test chamber so that the test target equipment is locked; And
A pressure supply unit for raising the pressure of the liquid so that the pressure of the liquid stored in the test chamber reaches a deep pressure,
Wherein the pressure supply unit supplies a high-pressure gas to the test chamber. The method according to claim 1,
Wherein the equipment to be tested is applied as a BOP equipment. 3. The method of claim 2,
And a test well head is fixedly mounted on the lower portion of the inner space of the pressure vessel so that the BOP equipment is seated and engaged. The method of claim 3,
Wherein the pressure supply unit supplies at least one of high-pressure liquid and gas to the test well head so that the internal pressure can be transmitted to the BOP equipment through the test well head. 5. The method of claim 4,
The pressure vessel is provided with an external pressure supply port through which the high pressure gas can be introduced into the test chamber by the pressure supply unit and a high pressure liquid or gas can be supplied to the test well head by the pressure supply unit. And an internal pressure supply port is formed in communication with the test well head. 6. The method of claim 5,
The pressure supply unit
A liquefied gas tank for storing liquefied gas;
A pressure supply pump for pressurizing and supplying the liquefied gas from the liquefied gas tank; And
A heating device for vaporizing the liquefied gas supplied through the pressure supply pump and converting the gas into a gaseous state,
And is connected to the external pressure supply port through a separate external pressure pipeline. The method according to claim 6,
Wherein the heating device is applied as a heat exchanger for heat-exchanging with the liquefied gas and for heating the liquefied gas. 8. The method of claim 7,
Wherein the heat exchanger uses seawater as a heating medium. The method according to claim 6,
Wherein the heating device includes a heater coil which is operated by receiving power. The method according to claim 6,
The pressure supply unit is connected to the pressure-resistant supply port through a separate pressure-resistant piping line,
Wherein the external pressure piping line and the pressure piping line are each provided with a flow rate control valve. 11. The method of claim 10,
The pressure-resistant piping line
A first pressure pipe line branched from an external pressure pipe line connecting the pressure supply pump and the heating device and connected to the internal pressure supply port; And
Pressure piping line branched from an external-pressure piping line connecting the heating device and the external-pressure supply port and connected to the internal-pressure supply port,
Wherein the drilling equipment testing apparatus comprises: A drilling rig test apparatus for testing a drilling rig used in a deep sea environment,
Preparing a pressure vessel in which a test chamber is formed;
Storing liquid in the test chamber;
Injecting a test object to be immersed in the liquid stored in the test chamber; And
Supplying a high-pressure gas to the test chamber through a separate pressure supply unit to raise the pressure of the liquid stored in the test chamber
Wherein the drilling equipment test method comprises the steps of: 13. The method of claim 12,
Wherein the test target equipment is applied as a BOP equipment, and a test well head is fixedly mounted on the lower portion of the inner space of the pressure vessel so that the BOP equipment can be seated. 14. The method of claim 13,
Further comprising supplying at least one of high pressure liquid and gas to the test well head through the pressure supply unit so that the internal pressure is delivered to the BOP equipment through the test well head Way.

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