KR101628875B1 - Carbon dioxide injection system with pressure reducing mechanism for preventing leakage of carbon dioxide - Google Patents

Carbon dioxide injection system with pressure reducing mechanism for preventing leakage of carbon dioxide Download PDF

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Publication number
KR101628875B1
KR101628875B1 KR1020150159062A KR20150159062A KR101628875B1 KR 101628875 B1 KR101628875 B1 KR 101628875B1 KR 1020150159062 A KR1020150159062 A KR 1020150159062A KR 20150159062 A KR20150159062 A KR 20150159062A KR 101628875 B1 KR101628875 B1 KR 101628875B1
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KR
South Korea
Prior art keywords
chamber
valve
carbon dioxide
injection system
pressure
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Application number
KR1020150159062A
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Korean (ko)
Inventor
김정찬
성기성
채기탁
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한국지질자원연구원
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Priority to KR1020150159062A priority Critical patent/KR101628875B1/en
Application granted granted Critical
Publication of KR101628875B1 publication Critical patent/KR101628875B1/en
Priority to PCT/KR2016/012394 priority patent/WO2017082568A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/007—Underground or underwater storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0142—Applications for fluid transport or storage placed underground
    • F17C2270/0144—Type of cavity
    • F17C2270/0149—Type of cavity by digging cavities

Abstract

According to the present invention, there is provided a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage, comprising: a housing constituting a first chamber and a second chamber; A top valve positioned above the first chamber of the housing; A stop valve located at a lower portion of the first chamber of the housing and located at an upper end of the second chamber; A lower valve positioned below the second chamber of the housing; An upper sealing part formed in close contact with the upper valve located above the first chamber and sealing the upper valve; And a shutoff seal formed in close contact with the shutoff valve located above the second chamber and for closing the shutoff valve, wherein for the first chamber and the second chamber of the housing, There is provided a carbon dioxide injection system in which a decompression portion for preventing carbon dioxide leakage is the same for both the upper valve, the stop valve, the lower valve, the upper seal, and the central axis of the stop seal.

Description

TECHNICAL FIELD [0001] The present invention relates to a carbon dioxide injection system having a decompression unit for preventing carbon dioxide leaks. BACKGROUND OF THE INVENTION [0002]

The present invention relates to a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage, and more particularly, to a carbon dioxide injection system in which carbon dioxide is injected into a carbon dioxide injection well after completion of underground injection of carbon dioxide, The present invention relates to a carbon dioxide injection system provided with a decompression unit for preventing the leakage of carbon dioxide which is inevitably generated when a change in the inside of the injection chamber is detected.

As a result of excessive industrialization, carbon dioxide is over-discharged globally, which leads to a long-term change in global temperature, and thus the excessive emission of carbon dioxide should be suppressed as much as possible, It is virtually impossible to stop or reduce the emission of carbon dioxide immediately in terms of economy and economy.

Various carbon dioxide storage technologies have been developed to minimize the emission of excessively discharged carbon dioxide into the atmosphere or the ocean.

Among these carbon dioxide storage technologies, the technology of storing carbon dioxide in the ground is now being demonstrated, and it is expected that it will become a universal measure for reducing carbon dioxide in the future.

On the other hand, the technology for storing carbon dioxide in the ground is almost complete in itself, but it is necessary to store additional carbon dioxide after storing the carbon dioxide in the ground, or the situation inside the carbon dioxide injection well (otherwise known as a borehole) There are cases where it is necessary to grasp the temperature, the pressure, or a change in the inside of the injection well, for example, a crack occurring in the borehole wall.

In the former case, if the underground stored carbon dioxide is stored well enough to store carbon dioxide, for example, if the underground stored carbon dioxide is chemically reacted sufficiently in the borehole so that liquid or gaseous carbon dioxide is absorbed into the ground, Carbon dioxide can be additionally stored from the outside such as the environment and economically.

In the latter case, it can be said that it is necessary to find out whether stability over a long period of time is maintained in a carbon dioxide injection pouch.

Specifically, in the case of carbon dioxide leaking near a carbon dioxide injection pit, it is necessary to determine the route through which the carbon dioxide is discharged.

In this case, when the injection of carbon dioxide is completed in the first place, the carbon dioxide injection well is normally closed and kept in a hermetically closed state, so that the sealed state must be broken in order to grasp the outflow route of carbon dioxide.

Therefore, when the sealed state is broken, when the carbon dioxide is injected at a high pressure through the inside of the injection hole, if the airtightness of the carbon dioxide injection is damaged, there is a fear that the released carbon dioxide is released to the outside at a high pressure.

Alternatively, there has been a case where a change in the state of the injection inner wall is to be grasped by using, for example, an observation camera or the like in the state in the carbon dioxide injection well.

In such a case, a conventional carbon dioxide injection defining structure will be briefly described with reference to Fig.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view illustrating the basic structure of a typical form of carbon dioxide injection.

1, a borehole 20 inserted in the ground or underground 10 is provided with a grouting 30 surrounding the borehole 20, an upper closed end 40 forming the upper part of the grouting 30, A plug 50 fixedly installed at a lower portion of the casing 20, and the like.

A cover or head portion 60 is provided at the top of the borehole 20 to protect the upper portion of the borehole 20.

In this case, the plug 50 may be made of the same material as the grouting 30, but the plug 50 is at a level that prevents the penetration of water or the like or the twisting of the borehole 20, It should be noted that special materials are used because it is necessary to prevent high temperature and high pressure carbon dioxide from leaking out.

In the case of such a carbon dioxide borehole 20, the injected carbon dioxide is introduced into the borehole 20 through a crack, a liquid phase or a gas phase carbon dioxide movement path formed in the plug 50, If the plug 50 is completely blown and the carbon dioxide does not flow out through the plug 50 such as a part of the grouting 30 is broken through the damaged grouting 30, There is a case where the water is introduced into the borehole 20 in some cases.

In addition, there have been cases where a substance other than carbon dioxide has flowed into the borehole 20 and the situation in the borehole 20 has been changed.

It is necessary to periodically grasp the situation in the soil inside the borehole 20 or adjacent to the borehole 20 in addition to the case where other substances such as carbon dioxide leach out.

For reference, the activity for grasping various situations inside and outside of the borehole 20 is generally called acquisition of physically logged data, and the device used for acquiring such physically logged data is described in Sonde, And the description of the acquisition of the physical logarithmic data and the like of the present invention will be omitted.

As described above, when the sealing of the carbon dioxide borehole 20 is simply broken, the inside of the borehole 20 is exposed to the inside of the borehole 20, There is a possibility that the discharged carbon dioxide or the like is released to the outside under a high pressure.

Accordingly, the inventors of the present invention have made efforts to minimize the pressure and temperature changes in the carbon dioxide injection pores during the investigation and acquisition of the underground stored carbon dioxide underground storage facility, in particular, the physical log data in the carbon dioxide injection pouch. Further, A carbon dioxide injection system with a decompression unit for preventing leakage of carbon dioxide, which can prevent the outflow of the carbon dioxide, was created.

The background art relating to the present invention is described in Patent Document 1. [

Korean Patent Publication No. 10-2012-0063242 (published on June 15, 2012)

SUMMARY OF THE INVENTION An object of the present invention is to minimize the pressure and temperature changes in the carbon dioxide injection pellets during investigation and acquisition of physical log data in the carbon dioxide injection pellets and to prevent carbon dioxide leaks that can actively prevent the outflow of carbon dioxide And a carbon dioxide injection system provided with a decompression unit.

The problem to be solved by the present invention is not limited to the above-mentioned problem (s), and another problem (s) not mentioned can be clearly understood by a person skilled in the art from the following description.

According to a preferred embodiment of the present invention, there is provided a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage, comprising: a sealing assembly coupled to an upper end of the carbon dioxide injection system, housing; A top valve positioned at an upper portion of the housing; And a lower valve located at a lower portion of the housing, the lower valve having the same central axis as the center axis of the upper valve with respect to the chamber of the housing, wherein the decompression portion for preventing carbon dioxide leakage is provided.

Here, according to a preferred embodiment of the present invention, it is preferable that the upper valve and the lower valve are sequentially opened when the probe approaches the sealing assembly, thereby allowing entry of the probe.

According to a preferred embodiment of the present invention, the upper valve and the lower valve are preferably an iris diaphragm.

According to a preferred embodiment of the present invention, when the diameter of the sealing assembly is different from the diameter of the injection hole, it is preferable that the diameter changing adapter is further included.

According to a preferred embodiment of the present invention, an inclined surface for facilitating entry of the probe into the upper valve and the lower valve is further formed on the upper end of the opening in which the upper valve and the lower valve are formed desirable.

According to another preferred embodiment of the present invention, there is provided a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage, comprising: a housing constituting a first chamber and a second chamber; A top valve positioned above the first chamber of the housing; A stop valve located at a lower portion of the first chamber of the housing and located at an upper end of the second chamber; A lower valve positioned below the second chamber of the housing; An upper sealing part formed in close contact with the upper valve located above the first chamber and sealing the upper valve; And a shutoff seal formed in close contact with the shutoff valve located above the second chamber and for closing the shutoff valve, wherein for the first chamber and the second chamber of the housing, There is provided a carbon dioxide injection system in which a decompression portion for preventing carbon dioxide leakage is the same for both the upper valve, the stop valve, the lower valve, the upper seal, and the central axis of the stop seal.

According to another preferred embodiment of the present invention, the apparatus further comprises a lower sealing part formed in close contact with the lower valve located below the second chamber and sealing the lower valve, It is preferable that the part has the same central axis as the central axis of the upper valve, the stop valve, the lower valve, the upper seal, and the stop seal.

According to another preferred embodiment of the present invention, the upper valve, the shutoff valve, and the lower valve are sequentially opened when the probe approaches the hermetic assembly, so that the probe moves to the first chamber, , And into the injection wells.

Further, according to another preferred embodiment of the present invention, the upper sealing portion, the intermediate sealing portion, and the lower sealing portion are formed in such a manner that each of the upper valve, the stop valve, It is preferable to be more open.

According to another preferred embodiment of the present invention, the upper valve, the stop valve, and the lower valve are preferably iris diaphragm.

According to another preferred embodiment of the present invention, when the diameter of the sealing assembly is different from the diameter of the injection hole, it is preferable to further include a diameter changing adapter.

According to another preferred embodiment of the present invention, on the upper end side of the opening in which the upper valve, the stop valve, and the lower valve are formed, the probe is provided with the inlet to the upper valve, the stop valve, It is preferable to further form an inclined surface for facilitating the operation.

According to another preferred embodiment of the present invention, a temperature sensor and a pressure sensor for measuring the temperature and pressure in the first chamber and the second chamber are further provided in the first chamber and the second chamber, respectively .

According to another preferred embodiment of the present invention, when the probe approaches the first chamber of the sealing assembly, the upper valve is opened, and then the upper sealing portion is opened, so that the probe is moved into the first chamber Enter; Subsequently, the stop valve and the shutoff seal are sequentially opened so that the probe enters the second chamber; Subsequently, the lower valve and the lower closure are sequentially opened to allow the probe to enter the injection well; The lower valve and the lower closure are opened before the upper valve and the upper closure are opened to measure the temperature and the pressure in the injection chamber and the temperature and pressure of the first chamber It is preferable that the temperature and the pressure are set and the probe enters the second chamber after the temperature and the pressure of the first chamber are set to the temperature and the pressure in the injection chamber and then enters the injection chamber .

According to another preferred embodiment of the present invention, it is preferable that the first chamber and the second chamber are further provided with a heating means for setting the temperature and the pressure of the injection gas, and a pressure control device.

Specific details of other embodiments are included in the " Detailed Description of the Invention "and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention and the manner of achieving them will be apparent by reference to various embodiments described in detail below with reference to the accompanying drawings.

However, it should be understood that the present invention is not limited to the embodiments described below, but may be embodied in various other forms. It will be understood by those of ordinary skill in the art that the foregoing description is provided to enable those of ordinary skill in the art to more fully understand the scope of the present invention and that the present invention is only defined by the scope of each claim of the claims.

According to the constitution of the present invention having the above-described configuration, it is possible to minimize the pressure and temperature changes in the carbon dioxide injection pit during the irradiation and acquisition of the physical log data in the carbon dioxide injection pit, and further prevent the outflow of carbon dioxide and the like A carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view illustrating the basic structure of a typical form of carbon dioxide injection.
2 is a cross-sectional view showing an example of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to a preferred embodiment of the present invention.
Fig. 3 is a cross-sectional view (1) showing an example of a carbon dioxide injection system provided with a decompression section for preventing carbon dioxide leakage according to a preferred embodiment of the present invention.
4 is a cross-sectional view (2) showing an example of a carbon dioxide injection system provided with a decompression section for preventing carbon dioxide leakage according to a preferred embodiment of the present invention.
5 is a cross-sectional view showing an example of a carbon dioxide injection system provided with a decompression section for preventing carbon dioxide leakage according to another preferred embodiment of the present invention.
6 is a cross-sectional view showing an example of a carbon dioxide injection system provided with a decompression portion for preventing carbon dioxide leakage according to another preferred embodiment of the present invention.
FIG. 7 is a plan view showing an example of a valve structure of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to another preferred embodiment of the present invention shown in FIG. 6. FIG.
FIG. 8 is a plan view showing an example of a closed structure of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to another preferred embodiment of the present invention shown in FIG. 6, wherein FIG. 8 (a) FIG. 8B is a plan view showing an example of a closed state before the physical logging probe enters. FIG.
9 is a flowchart showing an example of the operation of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to another preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Before describing the present invention in detail, terms and words used herein should not be construed in an ordinary or dictionary sense and should not be interpreted unconditionally, and in order for the inventor of the present invention to explain his invention in the best way It is to be understood that the concepts of various terms can be properly defined and used, and further, these terms and words should be interpreted in terms of meaning and concept consistent with the technical idea of the present invention.

That is, the terms used herein are used only to describe preferred embodiments of the present invention, and are not intended to specifically limit the contents of the present invention, It should be noted that this is a defined term.

Also, in this specification, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise, and it should be understood that they may include singular do.

Where an element is referred to as "comprising" another element throughout this specification, the term " comprises " does not exclude any other element, It can mean that you can do it.

Further, when it is stated that an element is "inside or connected to" another element, the element may be directly connected to or in contact with the other element, A third component or means for fixing or connecting the component to another component may be present when the component is spaced apart from the first component by a predetermined distance, It should be noted that the description of the components or means of 3 may be omitted.

On the other hand, it should be understood that there is no third component or means when an element is described as being "directly connected" or "directly connected" to another element.

Likewise, other expressions that describe the relationship between the components, such as "between" and "immediately", or "neighboring to" and "directly adjacent to" .

In this specification, terms such as "one side", "other side", "one side", "other side", "first", "second" Is used to clearly distinguish one element from another element, and it should be understood that the meaning of the element is not limited by such term.

It is also to be understood that terms related to positions such as "top", "bottom", "left", "right" in this specification are used to indicate relative positions in the drawing, Unless an absolute position is specified for these positions, it should not be understood that these position-related terms refer to absolute positions.

Furthermore, in the specification of the present invention, the terms "part", "unit", "module", "device" and the like mean a unit capable of handling one or more functions or operations, Or software, or a combination of hardware and software.

In this specification, the same reference numerals are used for the respective components of the drawings to denote the same reference numerals even though they are shown in different drawings, that is, the same reference numerals throughout the specification The symbols indicate the same components.

In the drawings attached to the present specification, the size, position, coupling relationship, and the like of each constituent element of the present invention may be partially or exaggerated or omitted or omitted for the sake of clarity of description of the present invention or for convenience of explanation May be described, and therefore the proportion or scale may not be rigorous.

Further, in the following description of the present invention, a detailed description of a configuration that is considered to be unnecessarily blurring the gist of the present invention, for example, a known technology including the prior art may be omitted.

2 is a cross-sectional view showing an example of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to a preferred embodiment of the present invention.

Referring to FIG. 2, a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to a preferred embodiment of the present invention is a closure assembly 100 coupled to an upper end of the carbon dioxide borehole 20, ); A top valve (130) located on the top of the housing (100); And a lower valve 140 positioned at a lower portion of the housing 120 with a center axis identical to the central axis of the upper valve 130 with respect to the chamber 125 of the housing 120.

That is, according to a preferred embodiment of the present invention, the upper valve 130 and the lower valve 140 are installed at the upper and lower portions of the chamber 125, respectively.

At this time, the structure of the upper valve 130 and the lower valve 140, which are installed at the upper part and the lower part of the chamber 125, can be regarded as a depressurized part, and according to another embodiment (See Fig. 6). However, it should be noted that even when a plurality of chambers are formed in this manner, they may be collectively referred to as a depressurization portion.

It should be noted that the dual installation of the upper valve 130 and the lower valve 140 can positively suppress the temperature and pressure loss in the borehole 20 compared with the case where only one valve is installed.

The operation of the upper valve 130 and the lower valve 140 will now be described with reference to FIGS. 3 and 4. FIG.

FIG. 3 is a cross-sectional view (1) showing an example of a carbon dioxide injection system provided with a decompression section for preventing carbon dioxide leakage according to a preferred embodiment of the present invention, and FIG. 4 is a cross- 2 is a cross-sectional view showing an example of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage.

First, referring to FIG. 3, when the probe 160 approaches the hermetic assembly 100, it can be seen that the upper valve 130 is opened first.

At this time, the lower valve 140 is closed and kept closed.

4, the probe 160 that has entered the upper valve 130 and enters the chamber 125 can further enter the borehole 20 while the lower valve 140 is opened .

The upper valve 130 and the lower valve 140 are preferably configured to be opened sequentially when the probe 160 approaches the hermetic assembly 100 to allow the probe 160 to enter.

Meanwhile, the inventors of the present invention have found that insertion of the probe 160 in the sealing assembly 100 shown in FIGS. 2 to 4 is somewhat difficult in some cases. In order to overcome this problem, 5, which is a cross-sectional view illustrating an example of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage, according to another preferred embodiment, the probe 160 is connected to the upper valve 230 of the hermetic assembly 200, A conical slope 222 is further formed on the upper end surfaces of the upper valve 230 and the lower valve 240 to facilitate entry into the valve 240.

As described above, when the inclined surface 222 is formed, the entrance of the probe 160 into the chamber 225 is very easy, and the entrance of the probe 160 into the subsequent borehole 20 is also flexible It is anticipated that the effect of allowing the probe 160 to enter the borehole 20 at a time can be expected.

According to a preferred embodiment of the present invention, the upper valve 130 and the lower valve 240 are preferably formed of an iris diaphragm.

At this time, the iris diaphragm may have a structure shown in Fig. 7, which will be described later.

The iris diaphragm shown in Fig. 7 may be moved in the direction of narrowing the central opening 334 toward the central opening 334 (see Fig. 7) or may be widened from the central opening 334 to expand the central opening 334 And a plurality of plates 332 (see Fig.

Thus, by reducing or expanding the plurality of plates 332 relative to the opening 334, it is possible to securely hold the probes 160 entering the chambers 125, 225, , 225) in the first and second passages.

According to a preferred embodiment of the present invention, when the diameter of the sealing assembly 100 or 200 is different from the diameter of the borehole 20, a diameter conversion adapter (not shown) may be further included.

Since the diameter of the sealing assemblies 100 and 200 is most preferably used when the sealing assemblies 100 and 200 are formed in a circular shape, the term 'diameter' is used. However, the shape of the sealing assemblies 100 and 200 It should be understood that other types of sealing assemblies 100, 200 are possible.

That is, when the diameter of the sealing assemblies 100 and 200 is different from the diameter of the borehole 20, the width of the lower portion of the sealing assemblies 100 and 200 (the diameter in the case of a circular shape) The diameter of the circle is different from the diameter of the circle.

In other words, if the sealing assemblies 100 and 200 have a rectangular shape, if the left and right widths of the bottoms of the sealing assemblies 100 and 200 are different from the lateral width (i.e., diameter) of the borehole 20, It should be noted that a conversion adapter can be used.

In this case, the diameter conversion adapter can be used when the sizes of the sealing assemblies 100, 200 and the borehole 20 are different, and functions as a kind of intermediate member that can be used when connecting different diameters.

When the diameter conversion adapter is used as described above, the sealing assemblies 100 and 200 can be expected to have the effect of eliminating the need to fabricate the sealing assemblies 100 and 200 of a proper size in the borehole 20 whenever physical logging data is needed have.

In addition, when the diameter conversion adapter is used, it is expected that the problem of difficulty in manufacturing the sealing assemblies 100 and 200 small can be expected.

When the diameter conversion adapter is used, for example, a screw groove (not shown) is formed at the upper end of the borehole 20, and the upper side of the diameter conversion adapter and the lower side of the diameter- It is preferable to form a screw-engaged member (not shown).

The inventors of the present invention have further found that when the iris diaphragm is used as the upper valve 130 and the lower valve 140, the opening 334 (see FIG. 7) is made substantially zero And it is found that the loss of pressure and temperature in the borehole 20 can not be avoided positively. Hereinafter, a description will be given of a case where carbon dioxide The injection system will be described.

6 is a cross-sectional view showing an example of a carbon dioxide injection system provided with a decompression portion for preventing carbon dioxide leakage according to another preferred embodiment of the present invention.

Referring to FIG. 6, the carbon dioxide injection system includes a decompression unit for preventing carbon dioxide leakage. The system includes a first chamber (324 or upper chamber) and a second chamber A housing 320 constituting a two-chamber 327; A top valve 330 positioned above the first chamber 324 of the housing 320; A stop valve 340 located in the lower portion of the first chamber 324 of the housing 320 and positioned at an upper end of the second chamber 327; A lower valve 350 located below the second chamber 327 (or the lower chamber) of the housing 320; An upper closure 360 formed in close contact with the upper valve 330 located at the upper portion of the first chamber 324 and closing the upper valve 330; And a shutoff seal (370) formed in close contact with the shutoff valve (340) located at an upper portion of the second chamber (327) for closing the shutoff valve (340) The stop valve 340, the lower valve 350, the upper closure 360, and the second chamber 327, with respect to the first chamber 324 and the second chamber 327, A carbon dioxide injection system provided with a decompression portion for preventing the same carbon dioxide leakage may be provided on the central axis of the shutoff seal portion 370.

6, the lower chamber 350 may further include a lower sealing portion 380 which is formed in close contact with the lower valve 350 located at a lower portion of the second chamber 327 and seals the lower valve 350 can do.

At this time, the lower end sealing portion 380 is connected to the center axis of the upper end valve 330, the stop valve 340, the lower end valve 350, the upper end closing portion 360, It may have the same central axis.

Thus, when the center axes of the respective members are the same, the approach of the probe 160 (see Figs. 3 and 4) to the sealing assembly 300 and the entry into the first chamber 324 and the second chamber 327, The entry failure of the probe 160 due to misalignment can be avoided very smoothly when the probe 160 enters into the probe 20.

6, the upper valve 330, the stop valve 3400, and the lower valve 350 are connected to the hermetic assembly 300 by the probe 300. In the carbon dioxide injection system for reducing the leakage of the carbon dioxide shown in FIG. 6, It is preferable that the probe 160 is sequentially opened to approach the first chamber 324, the second chamber 327, and the borehole 20 when the probe 160 approaches.

Thus, by sequentially opening each of the valves 330, 340, and 350, the probe 160 enters the first chamber 324, the second chamber 327, and the borehole 20, 20) can be positively suppressed.

6, the upper valve 330, the stop valve 340, and the lower valve 350 are preferably an iris diaphragm (see FIG. 7).

6, the upper sealing portion 360, the intermediate sealing portion 370, and the lower sealing portion 380 are formed by the upper valve 330 ), The shutoff valve 340, and the lower valve 350 in sequence.

This is because the upper closure 360 is opened after the upper valve 330 is opened and the interrupted closure 370 is opened after the shutoff valve 340 is opened and the lower valve 350 is opened And then the lower closure 380 is opened.

6, the upper sealing portion 360, the intermediate sealing portion 370, and the lower sealing portion 380 are additionally provided to the upper valve 330, the stop valve 340, and the lower valve 350, respectively It should be noted that the pressure loss through the opening 334 of the iris diaphragm, which may occur in Figs. 3 to 5, can be more positively suppressed.

In this case, as described above, when the diameter of the sealing assembly 300 is different from the diameter of the borehole 20, it may further include a diameter changing adapter (not shown), and further, The stop valve 340 and the lower valve 350 are formed at the upper end of the opening in which the valve 330, the stop valve 340 and the lower valve 350 are formed. It is preferable that an inclined surface 322 is further formed to facilitate entry into the recesses 350 and 350.

In this case, the configuration of the diameter-changing adapter and the configuration of the sloped surface 322 have already been described above, and a description thereof will be omitted here.

6, a temperature sensor (not shown) for measuring the temperature and pressure in the first chamber 324 and the second chamber 327 is provided in the first chamber 324 and the second chamber 327, 325 and 328, and pressure sensors 326 and 329, respectively.

6, the temperature sensors 325 and 328 and the pressure sensors 326 and 329 may be vertically disposed on one side wall of the housing 320. However, the relationship between the temperature sensors 325 and 328 and the pressure sensors 326 and 329 may be reversed, It should be noted that in any case, it is sufficient that the temperature and pressure fluctuation between the first chamber 324 and the second chamber 327 are not sensitive to the change in temperature and pressure You should know that.

Next, a valve structure and a structure of the closed portion of the carbon dioxide injection system provided with the decompression portion for preventing carbon dioxide leakage will be described with reference to FIGS. 7 and 8, according to another preferred embodiment of the present invention.

FIG. 7 is a plan view showing an example of a valve structure of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to another preferred embodiment of the present invention shown in FIG. 6, and FIG. 8 is a cross- 8A is a plan view showing an example of a closed structure of a carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage according to another preferred embodiment of the present invention. FIG. 8B is a plan view showing an example of a closed state before the physical logging probe enters. FIG.

Although the upper valve 330 is exemplarily shown in FIG. 7 as an example, the present invention can also be applied to the stop valve 340 and the lower valve 350, and the valves 130, 140, 230 in FIGS. , 240 may be similarly applied.

7, the upper valve 330 may be formed of an iris diaphragm composed of a plurality of plates 332. It is noted that an opening 334 is formed at the center thereof as shown in Fig. 7 have.

The center opening 334 may be relatively easily formed in the case of a light device in which an excessive load is not applied, such as an iris, which is usually installed inside a camera, in order to make it zero (0) As the temperature and / or pressure drop may occur through this opening 334 because the implementation is very difficult for high temperature and / or high pressure applications, the inventors of the present invention have found that the seal And responded by adding a configuration.

Although FIG. 8 illustrates only the configuration of the stop sealing portion 370 as in FIG. 7, it should be noted that the present invention can also be applied to the upper end sealing portion 360 and the lower end closing portion 380.

8A, the closed closure 370 is composed of a fixed portion 372 that is relatively fixed and does not move, and a moving portion 374 that is configured to move relatively in correspondence thereto. have.

8A shows a state in which the fixing portion 372 and the moving portion 374 are extended to have the opening 378 having the maximum size. When the fixing portion 372 is extended to the maximum size, And the moving part 374 are opposed to each other with respect to the boundary line 376 of the opening 378. It is to be noted that the moving part 374 is located on the right side relatively to the left and right direction as indicated by a long arrow have.

It should be noted that FIG. 8A shows a state in which the entry of the probe 160 is completed and the outer circumference of the probe 160 is completely sealed.

8B shows a state in which the probe 160 is approaching or does not enter. The fixed portion 372 does not move as it is, but the moving portion 374 corresponding to the fixed portion 372 moves to the left Respectively.

On the other hand, in FIG. 8 (b), the moving unit 374 has moved to the left, and it can be seen from the fact that the long arrows in the left and right direction in FIG. 8 (a) move from the right side to the left side relatively .

The bold right direction arrow shown in FIG. 8B indicates that the moving part 374 can move in the right direction corresponding to the entry of the probe 160 or the like, and thus the moving part 374 If it is moved completely to the right, it can be in the state shown in Fig. 8 (a).

8A and 8B, since the moving part 374 moves left and right at the lower part of the fixed part 372, the moving part 374 is particularly indicated by a dotted line. At this time, 374 may have, for example, a cross section of a "ㅓ" shape with respect to the fixed portion 372 having a "C" shaped cross section.

8 (a) and 8 (b), the left and right sides of the drawing may be reversed, that is, the fixing portion 372 may be formed on the right side of the drawing, and the moving portion 374 may be formed on the left side of the drawing .

As described above, when the fixing portion 372 has the "C" shape and the moving portion 374 has the "ㅓ" shape, the fixing portion 372 and the moving portion 374 are in close contact with the upper portion , For example, the temperature or the pressure reduction at the stop valve 340 can be minimized.

Furthermore, the moving part 374 may be modified to have a structure similar to the above-described iris diaphragm.

Further, the movable portion 374 may have the iris diaphragm structure described above, and further, the fixed portion 372 may have the iris diaphragm structure similarly.

When the fixed portion 372 and the movable portion 374 each have an iris diaphragm structure, the outer circumferential surface of the probe 160 can be closed and held even if the probes 160 (see FIG. 3) Therefore, even if the probe 160 having the above-mentioned diameter is used, leakage of carbon dioxide can be minimized.

Next, an example of the operation of the carbon dioxide injection system provided with the decompression unit for preventing carbon dioxide leakage will be described with reference to the flowchart shown in FIG. 9, according to another preferred embodiment of the present invention.

9, when the probe 160 approaches the first chamber 324 of the hermetic assembly 300, the upper valve 330 is opened and then the upper closure 360 is opened , The probe 160 enters the first chamber 324; Subsequently, the stop valve (340) and the stop seal (370) are sequentially opened to allow the probe (160) to enter the second chamber (327); Then, the lower valve 350 and the lower sealing part 380 are sequentially opened to allow the probe to enter the borehole 20; The lower valve 350 and the lower closing part 380 are opened to measure the temperature and pressure in the borehole 20 before the upper valve 330 and the upper closing part 360 are opened, The temperature and the pressure of the first chamber 324 are set to the same temperature and the same pressure as the temperature and the pressure of the first chamber 324 is set to the temperature and the pressure of the borehole 20 Thereafter, the probe 160 may enter the second chamber 327 and then enter the borehole 20.

At this time, the lower end closing portion 380 may be selectively added.

That is, it is necessary to measure the temperature and pressure of the second chamber 327 in order to measure the temperature and the pressure in the borehole 20.

Next, each step shown in FIG. 9 will be described in more detail.

9, the operation of the carbon dioxide injection system provided with the decompression unit for preventing carbon dioxide leakage according to another preferred embodiment of the present invention includes opening the upper valve 330, opening the upper sealing unit 360, Closing of the upper closure 360, waiting of the probe 160 (S200), opening of the lower closure 380, opening of the lower valve 350 (step S300), opening of the stop valve 340, (S400) of equalizing the temperature and pressure in the upper chamber (324) to the temperature and pressure in the lower chamber (327), measuring the temperature and pressure in the lower chamber (327) Opening the valve 340, opening the stop seal 370, entering the probe 160 into the lower chamber 327 (S500), and moving the probe 160 (160) past the lower valve 350 and the lower closure 380 ) Into the borehole 20 (S600).

At this time, in the upper chamber 324 and the lower chamber 327, temperature sensors 325 and 328 and pressure sensors 326 and 329 for reading the temperature and pressure, respectively, and the temperature of the borehole 20 thus obtained (Not shown) for setting the temperature and pressure of the lower chamber 327 by pressure, and a pressure regulating device (not shown in the figure, which indicates that the pressure is adjusted using the letter "P" .

The heating means may have the form of enclosing both the upper chamber 324 and the lower chamber 327 but if it has the form of heating only the inner space of these chambers within the upper chamber 324 and the lower chamber 327, Not only the overall weight can be reduced but also the handling of the system is simplified.

The pressure regulating device can function to set the pressure in the upper chamber 324 and the lower chamber 327, especially the pressure in the lower chamber 327, equal to the pressure in the borehole 20.

To this end, the pressure regulating device can set the pressure in the lower chamber 327 so that the pressure inside the borehole 20 is equal to that immediately after the pressure inside the borehole 20 is measured.

Then, the pressure in the upper chamber 324 can be set equal to the pressure in the lower chamber 327, and it is preferable that the order of operation is progressed in this order.

9 is to set the temperature and pressure of the upper chamber 324 and / or the lower chamber 327 with the temperature and pressure in the borehole 20, respectively.

9, the opening of the upper valve 330, the opening of the upper sealing part 360, and the step of entering the probe 160 into the upper chamber 324 (S100) are performed at the entrance of the probe 160 to obtain the physical log data , First opening the top valve 330 and then opening the top closure 360 and then the probe 160 entering the top chamber 324.

The stop valve 340 is opened and the upper closure 360 is closed and the probe 160 waiting step S200 is performed in the state in which the stop valve 340 is opened in a state in which the probe 160 enters the upper chamber 324, And the probe 160 may be in a standby state in the upper chamber 324 to prevent the pressure loss in the upper chamber 324 from occurring.

The temperature and pressure measurement step S300 in the lower chamber 327 and the opening of the lower end closing valve 380 and the lower valve 350 are performed in the borehole of the probe 160 waiting in the upper chamber 324 Opening the lower closure 380 and then opening the lower valve 350 to measure the temperature and pressure in the lower chamber 327 to advance the entry into the lower chamber 327.

In this case, the lower end sealing portion 380 is opened, the lower end valve 350 is opened, and the temperature and pressure measuring step S300 in the lower chamber 327 is performed by opening the upper valve 330, opening the upper sealing portion 360, The temperature and pressure in the lower chamber 327 may be measured by opening the lower closure portion 380 and opening the lower valve 350. In this case, The lower portion of the lower chamber 327, that is, the portion facing the borehole 20, may be always open.

Next, the step (S400) of matching the temperature and the pressure in the upper chamber 324 to the temperature and the pressure in the measured lower chamber 327 is performed in such a manner that the temperature and pressure in the lower chamber 327 measured in this way To match the temperature and pressure in the upper chamber 324 with the same temperature and pressure.

After the temperature and pressure in the lower chamber 327 are measured, the temperature and the pressure of the upper chamber 324 are set to the same as the temperature and pressure of the lower chamber 327, A heating device and a pressure regulating device (for example, a pressure regulating device) for maintaining the pressure loss in the upper chamber 324 as described above in order to cope with such leakage, Quot; P "in Fig. 8) is additionally attached.

Next, opening the stop valve 340, opening the stop seal 370, and entering the probe 160 into the lower chamber 327 (S500), opens the stop valve 340, The probe 160 may be introduced into the lower chamber 327 by opening the opening 370. [

Finally, the step S600 in which the probe 160 passes through the lower valve 350 and the lower closing part 380 and enters the borehole 20 is a step S600 in which the probe 160 is moved to the lower end valve 350 and the lower end closing part 380 into the borehole 20, where the probe 20 is capable of collecting the desired physical log data.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In addition, since the present invention can be embodied in various other forms, the present invention is not limited by the above description, and the above description is intended to be a complete description of the present invention, It will be understood by those of ordinary skill in the art that the present invention is only provided to fully inform the person skilled in the art of the scope of the present invention and that the present invention is only defined by the claims of the claims.

10: ground or underground 20: borehole
30: grouting 40: upper sealing end
50: plug 60: cover or head part
100, 200, 300: Hermetic assembly
120: housing 125: chamber
130: upper valve 140: lower valve
160: Probe 222:
225: chamber 320: housing
322: slope surface 324: first chamber (upper chamber)
325; 328: Temperature sensor 326; 329: Pressure sensor
327: second chamber (lower chamber) 330: upper valve
332: plate 334: opening
340: Stop valve 350: Lower valve
360: upper sealing part 370: stop sealing part
372: Fixing portion 374: Moving portion
376: Boundary line 378:
380: Lower sealing

Claims (15)

A carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage,
A sealing assembly coupled to a top of a carbon dioxide injection definition, comprising: a housing defining a chamber;
A top valve positioned at an upper portion of the housing; And
A lower valve located at a lower portion of the housing with a central axis coinciding with a center axis of the upper valve with respect to the chamber of the housing; , ≪ / RTI &
Wherein the upper valve and the lower valve are sequentially opened to allow entry of the probe when the probe approaches the sealing assembly,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
delete The method according to claim 1,
Wherein the upper valve and the lower valve are an iris diaphragm,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
The method according to claim 1,
Further comprising a diameter changing adapter if the diameter of the sealing assembly is different from the injection defining diameter.
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
The method according to claim 1,
And an inclined surface for facilitating entry of the probe into the upper valve and the lower valve is further formed on an upper end side of an opening in which the upper valve and the lower valve are formed,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
A carbon dioxide injection system provided with a decompression unit for preventing carbon dioxide leakage,
A sealing assembly coupled to the top of the carbon dioxide injection definition,
A housing constituting a first chamber and a second chamber;
A top valve positioned above the first chamber of the housing;
A stop valve located at a lower portion of the first chamber of the housing and located at an upper end of the second chamber;
A lower valve positioned below the second chamber of the housing;
An upper sealing part formed in close contact with the upper valve located above the first chamber and sealing the upper valve;
A stopping seal formed in close contact with the stop valve located above the second chamber, for sealing the stop valve; And
A lower sealing part formed in close contact with the lower valve located at a lower portion of the second chamber and sealing the lower valve; , ≪ / RTI &
The upper valve, the stop valve, and the lower valve are sequentially opened when the probe approaches the sealing assembly so that the probe enters the first chamber, the second chamber, and the injection well,
The upper sealing portion, the intermediate sealing portion, and the lower sealing portion are sequentially opened more sequentially as the upper valve, the stop valve, and the lower valve are sequentially opened,
Wherein the central valve of the upper valve, the stop valve, the lower valve, the upper sealing portion, the intermediate sealing portion, and the lower sealing portion are all the same, with respect to the first chamber and the second chamber of the housing,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
delete delete delete The method of claim 6,
Wherein the upper valve, the shutoff valve, and the lower valve are an iris diaphragm,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
The method of claim 6,
Further comprising a diameter changing adapter if the diameter of the sealing assembly is different from the injection defining diameter.
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
The method of claim 6,
Wherein an inclined surface for facilitating entry of the probe into the upper valve, the stop valve, and the lower valve is further formed on an upper side of the opening in which the upper valve, the stop valve,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
The method of claim 6,
Wherein a temperature sensor and a pressure sensor for measuring the temperature and pressure in the first chamber and the second chamber are further provided in the first chamber and the second chamber,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
14. The method of claim 13,
When the probe approaches the first chamber of the hermetic assembly, the upper valve is opened, and then the upper seal is opened, so that the probe enters the first chamber;
Subsequently, the stop valve and the shutoff seal are sequentially opened so that the probe enters the second chamber;
Subsequently, the lower valve and the lower closure are sequentially opened to allow the probe to enter the injection well;
Opening the lower valve and the lower closure to measure the temperature and pressure in the injection chamber before the upper valve and the upper closure are opened,
Setting the temperature and the pressure of the first chamber to the same temperature and pressure as the measured temperature and the pressure,
Wherein the probe enters the second chamber after entering the temperature and pressure of the first chamber at the temperature and pressure in the chamber,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
15. The method of claim 14,
Wherein the first chamber and the second chamber are further provided with heating means for setting the temperature and the pressure of the injection definition and a pressure regulating device,
CO2 injection system with decompression unit to prevent carbon dioxide leakage.
KR1020150159062A 2015-11-12 2015-11-12 Carbon dioxide injection system with pressure reducing mechanism for preventing leakage of carbon dioxide KR101628875B1 (en)

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PCT/KR2016/012394 WO2017082568A1 (en) 2015-11-12 2016-10-31 Carbon dioxide injection system having pressure-reducing unit installed therein for preventing leakage of carbon dioxide

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KR100999030B1 (en) * 2010-08-10 2010-12-10 한국지질자원연구원 Method for detecting leakage of gas from underground gas storage by pressure monitoring and underground gas storage system
KR101080096B1 (en) * 2009-11-30 2011-11-04 한국지질자원연구원 Picking apparatus of underground water or co2 and system include thereof
KR20120063242A (en) 2010-12-07 2012-06-15 한국지질자원연구원 System and apparatus for measuring transmissibility of underground structure
KR101197211B1 (en) * 2010-11-29 2012-11-02 한국지질자원연구원 System and method for controlling temperature of fluid for improving injectivity in stratum of supercritical carbon dioxide
KR101460029B1 (en) * 2013-05-02 2014-11-10 한국지질자원연구원 Method for connectivity test between vertical formations while drilling

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JP4939522B2 (en) * 2008-12-19 2012-05-30 大成建設株式会社 Carbon dioxide injection well and underground injection method of carbon dioxide

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KR101080096B1 (en) * 2009-11-30 2011-11-04 한국지질자원연구원 Picking apparatus of underground water or co2 and system include thereof
KR100999030B1 (en) * 2010-08-10 2010-12-10 한국지질자원연구원 Method for detecting leakage of gas from underground gas storage by pressure monitoring and underground gas storage system
KR101197211B1 (en) * 2010-11-29 2012-11-02 한국지질자원연구원 System and method for controlling temperature of fluid for improving injectivity in stratum of supercritical carbon dioxide
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KR101460029B1 (en) * 2013-05-02 2014-11-10 한국지질자원연구원 Method for connectivity test between vertical formations while drilling

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