KR20140131182A - Pressure Vessel and Pressure Vessel for Testing BOP - Google Patents

Pressure Vessel and Pressure Vessel for Testing BOP Download PDF

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Publication number
KR20140131182A
KR20140131182A KR20130050215A KR20130050215A KR20140131182A KR 20140131182 A KR20140131182 A KR 20140131182A KR 20130050215 A KR20130050215 A KR 20130050215A KR 20130050215 A KR20130050215 A KR 20130050215A KR 20140131182 A KR20140131182 A KR 20140131182A
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South Korea
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pressure
inner container
vessel
test chamber
chamber
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KR20130050215A
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Korean (ko)
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이예슬
최영복
류민철
이광민
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대우조선해양 주식회사
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Priority to KR20130050215A priority Critical patent/KR20140131182A/en
Publication of KR20140131182A publication Critical patent/KR20140131182A/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E21B33/064—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers specially adapted for underwater well heads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/023—Pressure

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  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure vessel for testing a pressure vessel and a BOP equipment, and is a pressure vessel formed to store a high-pressure fluid in an internal test chamber or to input a BOP equipment together with a high- A buffer chamber is formed outside the inner vessel by using a multi-barrier structure having a vessel and the pressure of the test chamber and the buffer chamber are made different from each other, To provide a pressure vessel for testing a pressure vessel and a BOP equipment capable of maintaining a stable structure at high pressure and capable of reducing the thickness of barrier ribs and securing a variety of material selection.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure vessel and a pressure vessel,

The present invention relates to pressure vessels and pressure vessels for testing BOP equipment. The present invention relates to a pressure vessel for storing a high-pressure fluid in an internal test chamber or a BOP equipment with a high-pressure fluid. The pressure vessel includes an inner vessel and an outer vessel, By forming the buffer chamber in the test chamber and the buffer chamber differently from each other, the pressure transmitted to the multiple partition walls can be reduced by using the pressure difference between the test chamber and the buffer chamber, thereby maintaining a stable structure at high pressure. Pressure vessel for testing pressure vessels and BOP equipment capable of reducing the thickness of barrier ribs and securing variety of material selection.

In general, various kinds of fluids (liquids or gases) for various purposes are supplied and used in industrial fields, and pressure vessels capable of storing such various fluids in a high pressure state are used. In addition, with the development of science and technology, the amount of liquid or gas used is rapidly increasing, and the use range of the pressure vessel storing the liquid or gas is also rapidly increasing.

In order to prevent the leakage of the internal fluid, safety is very important for such a pressure vessel. In recent years, it has been recognized that the need for weight reduction is also very important for improving economy and mobility.

On the other hand, 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, in recent years, development of deep sea oil field has become more active with the development of submarine mining technology.

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 the development of deep-sea oilfields, safety must be a top priority, and BOP (Blowout Preventer) equipment is installed at the top of the submarine oil well as a last-minute safeguard against oil explosion. The BOP equipment is connected to the riser of a floating drill ship and is seated in the upper wellhead of the submarine well, and is equipped with a number of ram devices and ananula to prevent oil or gas from being blown out from the well.

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 a partial test in which the external pressure is applied or the internal pressure is separately applied to each of the parts constituting the BOP equipment, and in the fully assembled state, there is no device capable of performing such test , A device capable of performing various types of test under the same conditions as the actual environment is desperately required.

Particularly, there is a problem that the general test of the BOP equipment is performed not only in the actual deep water environment but also in the drill ship or on the ground, so that the accuracy and reliability of the test result are largely lowered.

It is an object of the present invention to provide a pressure vessel which is capable of storing a high-pressure fluid in an internal test chamber or injecting a BOP equipment together with a high-pressure fluid, A buffer chamber is formed outside the inner vessel using a multi-partition structure having an inner vessel and an outer vessel and the pressure of the test chamber and the damping chamber are made different from each other, And a pressure vessel for testing a pressure vessel and a BOP equipment capable of maintaining a stable structure at a high pressure and capable of reducing the thickness of barrier ribs and securing diversity in material selection.

The present invention relates to a pressure vessel capable of storing a high-pressure fluid therein, comprising: an inner vessel body having a test chamber formed therein so as to store a fluid therein and having one open side; An inner container separated and formed by an inner container cover sealingly coupled to the one surface; And an outer container which surrounds the outer space of the inner container so as to be sealed in an outer space of the inner container, wherein the outer container is formed such that the inner container cover is exposed to the outside of the outer container And a pressure vessel.

At this time, it is preferable that the inner container cover is formed so that the inner pressure is stronger than the inner container main body.

The inner vessel may have an inner inlet port formed at one side thereof to supply fluid to the test chamber, and an outer inlet port may be formed at one side of the outer vessel to supply fluid to the buffer chamber.

In addition, the inner container body may be formed with a neck portion protruding outward from the outer container, and the inner container cover may be sealed to the neck portion.

In addition, the neck portion may be formed to have different characteristics of the inner pressure depending on the position.

In addition, the outer container may be provided with a plurality of the outer containers in order to surround the outer space of the inner container so as to form a plurality of the buffer chambers sequentially.

According to another aspect of the present invention, there is provided a pressure vessel for testing a BOP equipment, which is formed to be able to inject the BOP equipment into an internal space for testing a BOP equipment, Vessel; And an outer container which surrounds the outer space of the inner container so as to be sealed so as to be sealed in the outer space of the inner container, wherein the inner container has the test chamber formed therein and the one side opened And an inner container cover sealingly engaged with an opened surface of the inner container body, wherein the outer container is formed such that the inner container cover is exposed to the outside of the outer container, and the test chamber Wherein the high pressure liquid is stored and the high pressure liquid or gas is stored in the buffer chamber.

At this time, the inner container body is formed with a neck portion that is extended to protrude outward from the outer container, and the inner container cover can be sealed to the neck portion.

In addition, the neck portion may be formed to have different characteristics of the inner pressure depending on the position.

The inner container may have an inner inlet port formed at one side thereof to supply liquid to the test chamber, and an outer inlet port may be formed at one side of the outer container so as to supply liquid or gas to the buffer chamber.

In addition, the internal inflow port and the external inflow port are connected to a separate external pressure supply unit, a predetermined pressure is supplied to the test chamber by the external pressure supply unit, and a pressure lower than the pressure of the test chamber is supplied to the buffer chamber. .

At this time, the pressure supplied to the test chamber by the external pressure supply unit may be applied at a pressure of 4,300 psi or more.

Also, a test well head may be fixedly mounted on the inner container so that the BOP equipment can be inserted and seated.

The inner container may have an internal pressure supply port connected to the test well head. The internal pressure supply port may be connected to a separate internal pressure supply unit so that the internal pressure can be supplied to the BOP equipment through the test well head .

The BOP equipment may be connected to the lower end of the inner container cover, and may be inserted into the test chamber when the inner container cover is coupled to the inner container main body.

In addition, the internal inflow port and the external inflow port are respectively connected to a separate external pressure supply unit through an external pressure connection line so that pressure is supplied to the test chamber and the buffer chamber, Closing valves can be mounted to shut off the respective valves.

According to another aspect of the present invention, there is provided a pressure supply method for supplying pressure to the pressure vessel, comprising the steps of: supplying a first pressure fluid equally to the test chamber and the buffer chamber; And supplying a fluid having a second pressure higher than the first pressure to the test chamber while maintaining the pressure of the buffer chamber at the first pressure. to provide.

According to the present invention, a buffer chamber is formed outside the inner vessel using a multi-partition structure having an inner vessel and an outer vessel, and the pressure of the test chamber and the buffer chamber are made different from each other, It can be reduced by using the pressure difference between the test chamber and the buffer chamber, so that it is possible to maintain a stable structure even at high pressure, to reduce the thickness of barrier ribs, and to secure diversity of material selection.

1 is a conceptual diagram schematically showing the configuration of a pressure vessel according to an embodiment of the present invention,
FIG. 2 is a conceptual diagram schematically showing a configuration of a pressure vessel according to another embodiment of the present invention; FIG.
3 is a conceptual view schematically showing a configuration of a pressure vessel for testing BOP equipment 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 view schematically showing a configuration of a pressure vessel according to an embodiment of the present invention, and FIG. 2 is a conceptual diagram schematically showing a configuration of a pressure vessel according to another embodiment of the present invention.

The pressure vessel 100 according to an embodiment of the present invention is a container capable of storing a high pressure fluid therein and includes an inner vessel 101 and an outer vessel 102 surrounding the outer space of the inner vessel 101 As shown in FIG.

The inner container 101 includes an inner container main body 101-1 having a test chamber C formed therein to store a fluid therein and having one open side, And is separated and formed into an inner container cover 101-2 which is hermetically sealed on one surface.

The outer container 102 is formed so as to surround the outer space of the inner container 101 so as to be formed in an outer space of the inner container 101 so that the buffer chamber C1 is sealed. At this time, the outer container 102 is formed so that the inner container cover 101 - 2 of the inner container 101 is exposed to the outside of the outer container 102.

Accordingly, the pressure vessel 100 according to an embodiment of the present invention is configured such that the substantially high-pressure fluid is stored through the multi-partition structure in which the buffer chamber C1 is formed between the inner vessel 101 and the outer vessel 102 The internal pressure against the test chamber C is improved. In addition, by forming the inner container cover 101-2 capable of opening and closing the test chamber C to be exposed to the outside of the outer container 102, The opening and closing operations for the chamber can be performed, and a more stable structure can be achieved.

At this time, since the inner vessel cover 101-2 is exposed to the outside without the buffer chamber C1 in the outer space, the inner vessel cover 101-2 is formed such that the inner pressure of the inner vessel body 101-1 is higher than that of the inner vessel body 101-1 . For example, the inner container cover 101-2 can be made of a material thicker or stronger than the material of the inner container main body 101-1.

The inner container 101-1 is formed with a neck portion 101-5 extending to protrude outward from the outer container 102. The inner container cover 101-2 is formed in such a manner that the neck 101 -5 at the open end. At this time, it is preferable that the neck portion 101-5 is formed to have different characteristics of the inner pressure according to the position. That is, since the neck 101-5 has a portion exposed to the outside of the outer container 102 due to its shape, the portion exposed to the outside of the outer container 102, It is preferable that the pressure is formed so as to have stronger characteristics. For example, it may be manufactured using thicker or stronger materials.

The inner vessel 101 is provided with an inner inlet port 101-3 at one side thereof for supplying a fluid to the test chamber C and an inner inlet port 101-3 is provided at the outer vessel 102 to supply fluid to the buffer chamber C1 And an external inlet port 102-3 is formed on one side. The inner inlet port 101-3 may be formed to be extended from the inner container 101 and exposed to the outside of the outer container 102 as shown in FIG.

The internal inlet port 101-3 and the external inlet port 102-3 are connected to a separate external pressure supply unit 400 and are connected to the test chamber C and the buffer chamber C1 through the external pressure supply unit 400 The fluid is supplied and stored.

The external pressure supply unit 400 includes an external pressure supply pump 410 that operates to supply fluid to the test chamber C and the buffer chamber C1 at a high pressure, And an external connection line 420 connecting the external inlet port 102-3. At this time, it may be configured to supply the fluid to both the test chamber C and the buffer chamber C1 through one external pressure supply pump 410 as shown in Fig. 1, but otherwise the internal inlet ports 101- 3 and the external inflow port 102-3 may be respectively connected to different external pressure supply pumps 410 so as to separately supply the fluids.

The internal inlet port 101-3 and the external inlet port 102-3 are connected to the external pressure supply unit 400 through the external pressure connection line 420. At this time, Closing valves 431 and 432 may be mounted to block the pressure supply by the supply unit 400, respectively. The pressure of the fluid formed in the test chamber (C) and the buffer chamber (C1) can be adjusted through the opening / closing operation of the opening / closing valves (431, 432).

First, by operating the external pressure supply unit 400 in a state in which the open / close valves 431 and 432 are opened, the pressure of the test chamber C and the buffer chamber C1 of the pressure vessel 100 The liquid L is supplied to the chamber C and the buffer chamber C1 at a high pressure so that the internal pressure of the test chamber C and the buffer chamber C1 reaches the first pressure P1 do. Thereafter, the open / close valve 432 of the external pressure connection line 420 connected to the external inlet port 102-3 is closed, and the external pressure supply unit 400 is continuously operated so that the internal pressure of the test chamber C is maintained at the first pressure (P2) higher than the first pressure (P1).

When the fluid of the second pressure P2 higher than the first pressure is supplied to the test chamber C while the fluid of the first pressure P1 is supplied and stored in the buffer chamber C1 as described above, ), Unlike a single bulkhead structure, P2 pressure is not transmitted but P2-P1 pressure is transmitted. Therefore, it can be manufactured at a relatively lower design pressure as compared with a pressure vessel of a single partition wall, thereby increasing the degree of design freedom for the pressure vessel such as the thickness of the partition wall or material selection.

In other words, by forming the buffer chamber C1 in the pressure vessel 100 through the multi-partition structure, the pressure difference between the test chamber C and the buffer chamber C1 can be used to control the pressure acting on the partition wall of the inner vessel 101 It is possible to relatively reduce the pressure and thus to maintain a stable structure even when a high-pressure fluid is stored in the test chamber C. Particularly, it is possible to make the thickness of the partition wall thin, .

By supplying pressure to the pressure vessel 100 through this method, not only the entire P2 pressure is transmitted to the partition walls of the inner vessel 101 but also the pressure P2-P1 is transmitted during the pressure supply process, It is always possible to maintain a stable structure against pressure even during the supply process.

1, the structure of the pressure vessel 100 has been described in which the outer vessel 102 surrounding the inner vessel 101 is provided. However, according to another embodiment of the present invention, The pressure vessel 100 may include a plurality of outer vessels 102 and 103 to form a plurality of buffer chambers C1 and C2 as shown in FIG.

That is, the outer vessel 103 may be provided with a plurality of the outer vessels 102 so as to surround the outer vessel 102 so that a plurality of buffer chambers C1 and C2 are sequentially formed.

For example, as shown in FIG. 2, a first outer container 102 is disposed to surround the outer space of the inner container 101 so as to be spaced apart from the outer space of the first outer container 102, The second outer container 103 may be disposed so as to surround the first outer container 103. Of course, a plurality of more outer containers may be sequentially disposed in the outer space of the second outer container 103. [ According to this structure, the first buffer chamber C1 is formed in the space between the inner vessel 101 and the first outer vessel 102, and the first buffer chamber C1 is formed in the space between the first outer vessel 102 and the second outer vessel 103 2 buffer chamber C2 is formed.

At this time, an external inflow port 103-3 is also formed in the second external container 103 so that fluid can be supplied from the external pressure supply unit 400 to the second buffer chamber C2, And is connected to the connection line 420, and the on / off valve 103-3 is mounted on the external pressure connection line 420.

Of course, in this case as well, the inner container cover 101-2 of the inner container 101 is formed so as to be exposed to the outside of the second outer container 103. [

When a plurality of buffer chambers C1 and C2 are formed through the plurality of outer vessels 102 and 103 as described above, a lower pressure is sequentially supplied to the buffer chambers C1 and C2 sequentially toward the outer buffer chamber, The structural stability of the pressure vessel 100 can be further enhanced.

That is, a high-pressure fluid is supplied and stored in the test chamber C, and a pressure lower than the pressure of the test chamber C is supplied to the plurality of buffer chambers C1 and C2. As a result of the pressure being supplied, the pressure in the overall structure of the pressure vessel 100 is improved, resulting in a more stable structure.

First, the test chamber C and the plurality of buffer chambers C1 and C2 are provided with first and second buffer chambers C1 and C2, respectively, in order to supply pressure to the test chamber C and the buffer chambers C1 and C2 of the pressure vessel 100. [ The pressure P1 is equally supplied and then the pressure in the buffer chamber C2 located outside is maintained at a relatively higher pressure P1-1) are sequentially supplied to the buffer chamber C1, and this process is sequentially repeated to sequentially increase the pressure in the buffer chamber C2 at the outermost buffer chamber C1, And supplies high pressure P1-1. Thereafter, the second pressure P2 may be supplied to the test chamber C.

Therefore, the pressure P1-1 of the buffer chamber C1 located at the innermost periphery has the highest pressure among the plurality of buffer chambers C1 and C2, which is formed lower than the second pressure P2.

According to this structure, since the pressure P2- (P1-1) is transmitted to the partition walls of the inner vessel 101, the pressure vessel 100 having a more stable structure can be formed through the partition walls of a smaller thickness. In other words, the pressure difference between the test chamber (C) and the buffer chamber (C1) can be formed more finely and the structure of the pressure vessel (100) can be maintained more stably.

3 is a conceptual view schematically showing a configuration of a pressure vessel for testing BOP equipment according to an embodiment of the present invention.

The pressure vessel 100 for testing a BOP equipment according to an embodiment of the present invention is the same as the above-described pressure vessel in terms of the pressure vessel described in FIGS. 1 and 2 for testing BOP equipment. A brief overview of the added configuration is presented.

A pressure vessel 100 for testing a BOP equipment according to an embodiment of the present invention includes an inner vessel 101 in which a test chamber C is formed and a damping chamber C1 in an outer space of the inner vessel 101 And an outer container 102 which surrounds the outer space of the inner container 101 so as to be spaced apart. The inner vessel 101 is divided into an inner vessel body 101-1 and an inner vessel cover 101-2 and the inner vessel cover 101-2 is exposed to the outside of the outer vessel 102. [

At this time, the test chamber C is formed to be charged with the BOP equipment 200 to be tested. In the test chamber C, the high pressure The high pressure liquid L or gas is stored in the buffer chamber C1 so as to compensate the internal pressure of the internal vessel 101 against the partition wall. In this case, the pressure of the shock absorbing chamber C1 is set to be lower than the pressure of the test chamber C.

The inner vessel 101 is provided with an inner inlet port 101-3 at one side so as to be able to supply the liquid L to the test chamber C, And an external inlet port 102-3 is formed at one side so as to supply gas.

The internal inflow port 101-3 and the external inflow port 102-3 are connected to a separate external pressure supply unit 400 and the test chamber C is supplied with a predetermined pressure, , A pressure of 4,300 psi or more is supplied for deep sea pressure, and a pressure lower than that of the test chamber (C) is supplied to the buffer chamber (C1).

The external pressure supply unit 400 includes an external pressure supply pump 410 that operates to supply fluid to the test chamber C and the buffer chamber C1 at a high pressure, And an external connection line 420 connecting the external inlet port 102-3. At this time, it may be configured to supply the fluid to both the test chamber C and the buffer chamber C1 through one external pressure supply pump 410 as shown in Fig. 1, but otherwise the internal inlet ports 101- 3 and the external inflow port 102-3 may be respectively connected to different external pressure supply pumps 410 so as to separately supply the fluids. The external pressure supply pump 410 is generally configured to supply the liquid. The external pressure supply pump 410 connected to the external inlet port 102-3 may be applied in the form of a compressor for supplying a gas, Cl).

Closing valves 431 and 432 can be mounted on the external pressure connection line 420 to block the pressure supply by the external pressure supply unit 400. The opening and closing operations of the opening and closing valves 431 and 432 enable the test chamber C And the pressure of the fluid formed in the buffer chamber C1 can be adjusted.

According to this structure, the pressure vessel 100 according to an embodiment of the present invention has a double-chambered structure of the inner vessel 101 and the outer vessel 102, and the buffer chamber C1 is formed in the space therebetween, It is possible to maintain a relatively stable structure even if a high pressure such as a deep-sea environment is formed in the test chamber C due to the improvement of the internal pressure.

That is, by forming the buffer chamber C1 in the pressure vessel 100 through the multi-barrier structure as described above, the pressure difference between the test chamber C and the buffer chamber C1 can be used to form the partition wall It is possible to maintain a stable structure even when a high-pressure fluid is stored in the test chamber C. Particularly, it is possible to make the thickness of the partition wall thin, It is possible to secure diversity.

A separate test well head 300 may be fixedly mounted on the inner vessel 101 so that the BOP equipment 200 may be inserted and coupled to the inner vessel 101. A test well head 300 may be connected to the inner vessel 101, Pressure supply port 101-4 may be formed. The internal pressure supply port 101-4 is formed to be connectable with a separate internal pressure supply unit 500 so that internal pressure can be supplied to the BOP equipment 200 through the test well head 300. [

The pressure-resistant supply unit 500 includes an internal pressure supply pump 510 that operates to supply a high-pressure fluid to the test well head 300 and an internal pressure supply pump 510 that supplies high- And an internal pressure connection line 520 connecting the internal pressure supply pump 510 and the test well head 300. The pressure-resistant supply pump 510 may be applied in the form of a pump for supplying liquid, or may be applied in the form of a multi-phase pump capable of simultaneously supplying liquid and gas to reproduce the gas generating situation in the oil well have.

The BOP equipment 200 is connected to the lower end of the inner container cover 101-2 and inserted into the test chamber C in the course of coupling the inner container cover 101-2 to the inner container main body 101-1 Lt; / RTI > That is, the inner container cover 101-2 and the BOP equipment 200 are coupled to each other so as to be integrally carried, and the inner container cover 101-2 is joined to the upper surface of the inner container main body 101-1 by a crane , And at the same time, the BOP equipment 200 is put into the test chamber (C). At this time, the BOP apparatus 200 is configured to be inserted into the test chamber C and to be seated in the test well head 300 located at the lower part of the inner space of the inner vessel main body 101-1. Therefore, the operation of closing the inner container cover 101-2 and sealing the inner container cover 101-2 to the inner container main body 101-1 can simultaneously perform the closing operation of the BOP equipment 200 and the bonding operation with the test well head 300. [

When the BOP equipment 200 is actually installed in a submarine well, it is connected to a drilling facility in the sea via a riser. Therefore, a separate riser 220 is connected to the BOP equipment 200 to be supplied to the test chamber C , Which can be configured to be connected to a separate control room (not shown).

According to this structure, the BOP equipment 200 is charged into the test chamber C so as to be immersed in the liquid L, and in this state, the test chamber C is supplied with a predetermined pressure, for example, By providing a deep pressure of greater than 4,300 psi, an external pressure test for the BOP equipment 200 can be performed. Also, in this state, by providing the internal pressure to the BOP equipment 200 through the internal pressure supply unit 500, the internal pressure test for the BOP equipment 200 can be performed. Further, in this test process, not only the operation state of the BOP equipment 200 can be controlled through the control room, but also the operation states of the external pressure supply unit 400 and the internal pressure supply unit 500 can be controlled, .

The method of testing the BOP equipment using such a pressure vessel 100 is as follows. First, the liquid L is supplied to the test chamber C, and then the BOP equipment 200) into the test chamber (C). At this time, the BOP equipment 200 is inserted to be immersed in the liquid L stored in the test chamber C. When the inner container cover 101-2 is sealed to the inner container body 101-1, (C). In this state, the first pressure P1 is supplied to the test chamber C and the shock absorbing chamber C1 while sealing the inner container cover 101-2. The second pressure P2 higher than the first pressure P1 is supplied to the test chamber C while the pressure of the buffer chamber C1 is maintained at the first pressure P1. The second pressure can be set to a deep water pressure, for example, a pressure of at least 4,300 psi.

The internal pressure test for the BOP equipment 200 can be performed through this process and then the internal pressure test is performed for the BOP equipment 200 by supplying the internal pressure to the BOP equipment 200 through the internal pressure supply unit 500 You may.

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

100: pressure vessel 101: inner vessel
101-1: Inner container body 101-2: Inner container case
101-3: internal inlet port 102: external container
102-3: External influent port 200: BOP equipment
220: riser 300: test well head
400 external pressure supply unit 500 internal pressure supply unit
C: test chamber C1, C2: buffer chamber

Claims (17)

1. A pressure vessel capable of storing a high-pressure fluid therein,
An inner container body formed with a test chamber so as to store a fluid therein, the inner container body being formed in an open form on one side, and an inner container cover sealingly joined to an opened surface of the inner container body; And
And an outer container which surrounds the outer space of the inner container so that the buffer chamber is sealed in the outer space of the inner container
Wherein the outer container is formed such that the inner container cover is exposed to the outside of the outer container. The method according to claim 1,
Wherein the inner container cover is formed such that the inner pressure of the inner container body is higher than that of the inner container body. 3. The method of claim 2,
Wherein an inner inflow port is formed at one side of the inner vessel so as to supply fluid to the test chamber and an outer inflow port is formed at one side of the outer vessel so as to supply fluid to the buffer chamber. 4. The method according to any one of claims 1 to 3,
Wherein the inner container body is formed with a neck portion protruding outwardly from the outer container, and the inner container cover is sealed to the neck portion. 5. The method of claim 4,
Wherein the neck portion is formed to have different characteristics of the inner pressure depending on the position. 4. The method according to any one of claims 1 to 3,
Wherein the outer container is provided with a plurality of the outer containers in order to surround the outer space of the outer container spaced apart so that the buffer chambers are sequentially formed in sequence. 1. A pressure vessel for testing a BOP equipment, the BOP equipment comprising:
An inner container in which a test chamber is formed to be sealed so that BOP equipment can be inserted therein; And
And an outer container which surrounds the outer space of the inner container so that the buffer chamber is sealed in the outer space of the inner container
Wherein the inner container is divided into an inner container body formed with the test chamber formed therein and one surface open, and an inner container cover sealingly engaged with the opened surface of the inner container body, Wherein the outer container is formed such that the inner container cover is exposed to the outside of the outer container,
Wherein the high pressure liquid is stored in the test chamber and the high pressure liquid or gas is stored in the buffer chamber. 8. The method of claim 7,
Wherein the inner container body is formed with a neck portion protruding outwardly from the outer container, and the inner container cover is sealed to the neck portion. 9. The method of claim 8,
Wherein the neck portion is formed to have different characteristics of the inner pressure depending on the position. 8. The method of claim 7,
Wherein the inner container is provided with an inner inlet port at one side thereof for supplying liquid to the test chamber and an outer inlet port is formed at one side of the outer container so as to supply liquid or gas to the buffer chamber. Pressure vessel for equipment testing. 11. The method of claim 10,
The internal inflow port and the external inflow port are connected to a separate external pressure supply unit and a predetermined pressure is supplied to the test chamber by the external pressure supply unit and a pressure lower than the pressure of the test chamber is supplied to the buffer chamber Features a pressure vessel for testing BOP equipment. 12. The method of claim 11,
Wherein the pressure supplied to the test chamber by the external pressure supply unit is a pressure of 4,300 psi or more. 12. The method of claim 11,
And a test well head is fixedly mounted on the inner container so that the BOP equipment can be inserted and seated. 14. The method of claim 13,
The internal container is formed with an internal pressure supply port connected to the test well head, and the internal pressure supply port is formed to be connectable with a separate internal pressure supply unit so that internal pressure can be supplied to the BOP equipment through the test well head Pressure vessel for testing BOP equipment. 8. The method of claim 7,
Wherein the BOP equipment is coupled to a lower end of the inner container cover and is introduced into the test chamber during the coupling of the inner container cover to the inner container main body. 11. The method of claim 10,
The internal inlet port and the external inlet port are respectively connected to a separate external pressure supply unit through an external pressure connection line so that pressure is applied to the test chamber and the buffer chamber,
Wherein the external pressure connection line is provided with an on-off valve for blocking pressure supply by the external pressure supply unit, respectively. A pressure supply method for supplying pressure to a pressure vessel according to claim 1,
Equally supplying a fluid of a first pressure to the test chamber and the buffer chamber; And
Supplying a fluid having a second pressure higher than the first pressure to the test chamber while maintaining the pressure of the buffer chamber at the first pressure;
And the pressure of the pressurized fluid in the pressure vessel is reduced.
KR20130050215A 2013-05-03 2013-05-03 Pressure Vessel and Pressure Vessel for Testing BOP KR20140131182A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112051155A (en) * 2020-09-17 2020-12-08 中国地质大学（武汉） Deepwater pressure environment test device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112051155A (en) * 2020-09-17 2020-12-08 中国地质大学（武汉） Deepwater pressure environment test device

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