KR101999279B1 - Pressure device for x-ray ct scan using carbon fiber - Google Patents

Abstract

The present invention provides a core holder comprising: a core holder provided on both sides of the core to form a core; A finishing cap provided outside the core holder; A sleeve which surrounds the core and the outer circumferential surface of the core holder; A watertight portion provided on the outer side of the sleeve; A side surface finishing portion provided outside the watertight portion; And an outer housing provided to surround the outer circumferential surface of the sleeve, the watertight portion and the side finishing portion, wherein the outer housing has a fitting groove in which a part of the outer circumferential surface is inwardly folded, and a part of the outer circumferential surface of the outer housing is formed And the carbon fiber is inserted into the fitting groove to enclose the carbon fiber.

Description

[0001] PRESSURE DEVICE FOR X-RAY CT SCAN USING CARBON FIBER [0002]

The present invention relates to a pressure device for simulating a specimen for observing the flow of fluids (oil, groundwater, natural gas, etc.) in rocks and strata having various external pressure and temperature conditions.

More particularly, the present invention relates to a method of measuring a physical property of a rock or the like and a core flow test by using a carbon fiber to reinforce the strength of a pressure vessel, which is made of a metal such as aluminum, ray CT photographing using a carbon fiber which is capable of observing the flow of fluid flowing through the rock by injecting a fluid into a core provided with a rock.

Conventionally, in order to grasp the physical characteristics of the ground, a borehole was drilled through the ground, and a specimen was taken through the borehole. Then, the collected rocks were placed in the core 1 and the physical properties of the core were obtained through a pressure device.

However, the conventional pressure device is made of a metal material to withstand the internal pressure under high pressure, and it is made of aluminum having good x-ray transmittance for X-ray CT imaging for observing the flow of the internal fluid. When the thickness of the metal is increased, the X-ray can not be transmitted and the image can not be taken. Especially, when the high pressure is applied in the pressure device, the thickness of the wall of the pressure container becomes thick, So that it is difficult to secure physical properties through photographing.

Further, in the past, only the outer surface of the core provided with the rock has been photographed through the photographing of the pressure device, and it is difficult to secure various physical property values only by using the pressure device itself by utilizing the result of the photographing. So that time and cost are increased.

Therefore, in order to obtain various physical properties according to the result of x-ray CT and to observe the flow of fluid under high pressure, it is possible to capture the inside of the core provided with the rock, etc., Is required.

Patent Registration No. 10-1223462 (Nov.

DISCLOSURE Technical Problem The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a pressure vessel which is made of a metal material such as aluminum and has a thick outer wall of the pressure vessel, In order to prevent the problem of not being able to be supported, it is necessary to make x-ray CT for a specimen for physical property measurement of rocks and core flow experiment using carbon fiber having good X-ray transmittance, Ray CT photographing apparatus using carbon fiber to observe the flow of fluid flowing in the rock through the photographing under high pressure.

In order to solve the above problems, a pressure device for x-ray CT using carbon fiber according to the present invention comprises: a core holder provided on both sides of a core to form a core; A finishing cap provided outside the core holder; A sleeve provided to surround the core and an outer peripheral surface of the core holder; A watertight portion provided on the outer side of the sleeve; A side finishing part provided outside the watertight part; And an outer housing provided so as to surround the outer circumferential surface of the sleeve, the watertight portion and the side finishing portion, wherein the outer housing has a fitting groove in which a part of the outer circumferential surface is worn inwardly, The present invention provides a pressure device for x-ray CT imaging using carbon fibers, which is characterized in that carbon fibers are inserted into the grooves.

The present invention makes it possible to perform x-ray CT of a specimen for measurement of physical properties such as rock and core flow experiment using carbon fiber, in order to prevent the problem that photographing is made with metal such as aluminum.

Further, it is possible to observe the flow of the fluid flowing in the rock through the photographing while injecting a high-pressure fluid into the core where the rock is provided, so that accurate photographing can be performed, .

1 is a perspective view of a pressure device for x-ray CT imaging using carbon fiber according to the present invention.
2 is a plan view of a pressure device for x-ray CT imaging using carbon fiber according to the present invention.
3 is a side view of a pressure device for x-ray CT imaging using carbon fiber according to the present invention.
4 is a cross-sectional view of a pressure device for x-ray CT imaging using carbon fiber according to the present invention.
5 is a partially exploded cross-sectional view of a pressure device for x-ray CT using carbon fiber according to the present invention.

Advantages and features of embodiments of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

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. The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings defined in consideration of functions in the embodiments of the present invention, It should be construed in the meaning and concept consistent with the technical idea of the present invention based on the principle that the concept of the term can be appropriately defined in order to explain it in the best way.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, various equivalents And variations are possible.

Before describing the present invention with reference to the accompanying drawings, it is not shown what is not necessary in order to reveal the gist of the present invention, that is, a publicly known structure that a person skilled in the art can easily add, .

First, in this specification, the meaning of a core means a test sample (test sample) placed in a tubular collector, and means a core sample such as a rock formed in a pressure device for simulating a test sample such as a rock. That is, forming the core in this specification means that the core sample such as rock is provided inside the pressure device.

Further, the simulation refers to a figure as a figure or a figure such as a figure. In the present invention, a fluid is injected into a core, and a CT scan is performed in the process of passing the fluid through the inside of the rock. And it is used for the purpose of observation.

Hereinafter, a pressure device for x-ray CT imaging using carbon fiber according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a pressure device for x-ray CT photographing using carbon fiber according to the present invention, FIG. 2 is a plan view of a pressure device for x-ray CT photographing using carbon fiber according to the present invention, FIG. 4 is a cross-sectional view of a pressure device for x-ray CT imaging using carbon fiber according to the present invention, and FIG. 5 is a cross-sectional view of a pressure device for x- -ray is a partially exploded cross-sectional view of a pressure device for CT imaging.

The pressure device for x-ray CT using carbon fiber according to the present invention is made of a metal material such as aluminum to prevent the problem of not being photographed. X-ray CT using carbon fiber, which allows x-ray CT imaging of the specimen and allows fluid to flow through the rock while injecting fluid into the core (1) And includes a core holder 10, a finishing cap 20, a sleeve 30, a watertight portion 40, a side finishing portion 50, an outer housing 60, and a cooling jacket 70 .

The core holder 10 will be described with reference to the accompanying drawings. The core holder 10 is provided on both sides of the core 1 to form the core 1, and includes a fluid supply unit 11.

The pair of core holders 10 is provided with a space in which the core 1 is formed together with a sleeve 30 to be described later. When a rock or the like is provided in the core 1, As shown in FIG.

The fluid supply unit 11 performs a function of supplying fluid to be passed through the core holder 10 from the outside of the core holder 10 to the core 1. As will be described with reference to the accompanying drawings, The fluid is supplied from a separate fluid supply means provided outside through the through hole 21 formed in the finishing cap 20.

Here, the fluid supply means may be configured in various ways by supplying fluid to the pressure device through the fluid supply portion 11 to supply the fluid to the core 1 formed between the core holders 10, It should be noted that the means of supplying is not described separately because it is obvious to those skilled in the art.

At this time, the fluid supplied to the core 1 through the fluid supply unit 11 may be made of methane, carbon dioxide, or the like.

A connector (not shown) may be provided on the outer side of the core holder 10 according to design conditions.

The finishing cap 20 is provided on the outer side of the core holder 10 so as to close the outer side of the pressure device and has a through hole 21 penetrating the inside and the outside of the core holder 10, So that the side surface is exposed through the through hole 21.

The side surface of the finishing cap 20 on which the through hole 21 is formed is brought into contact with the side surface of the core holder 10 to prevent the core holder 10 from being separated from the side surface of the core holder 10, A part of the side surface of the core holder 10 is exposed to the outside by the through hole 21 so that the fluid supply part 11 formed in the core holder 10 is exposed to the outside.

Thus, the fluid can be easily supplied to the fluid supply part 11 through the through hole 21. [

The sleeve 30 is provided to surround the core 1 and the outer circumferential surface of the core holder 10 so that the core 1 can be formed together with the pair of core holders 10, Thereby preventing the rocks from being released from being detached and being safely provided.

The sleeve 30 may be made of a urethane material.

The watertight portion 40 is provided on the outer side of the sleeve 30 and is formed on the outer circumferential surface of the core holder 10 or the finishing cap 20 or the core holder 10 and the finishing cap 20, And a portion thereof.

For example, when the length of the core 1 is 50 mm, the interval between the pair of core holders 10 becomes narrow. Therefore, the watertight portion 40 is provided to surround the outer circumferential surface of the finishing cap 20, As another example, when the length of the core 1 is 240 mm, the gap between the pair of core holders 10 is widened, so that the watertight portion 40 is provided so as to surround the outer circumferential surface of the core holder 10.

At this time, the watertight portion 40 may be made of Teflon, and a watertightness member 41 may be provided between the outer circumferential surface of the watertight portion 40 and the inner circumferential surface of the outer housing 60 described later.

The watertightness member 41 will be described with reference to the accompanying drawings. The watertightness member 41 prevents the watertightness member 41 from flowing out to the outside in the process of applying water pressure to the core 1 through the water pressure supply unit 63 provided in the outer housing 60 , So that precise hydraulic pressure adjustment and supply can be made.

According to the design conditions, the watertight member 41 may be made of synthetic rubber, preferably nitrile-butadiene rubber prepared by copolymerization of butadiene and acrylonitrile. Of course it is.

The side finishing portion 50 is provided on the outside of the watertight portion 40 and functions to close the outside of the watertight portion 40.

At this time, the side finishing portion 50 is not shown in the drawing, but may be configured to be coupled to the outer housing 60 by a thread engagement.

For example, threads (not shown in the drawing) are formed on the inner circumferential surfaces of both ends of the outer housing 60, and corresponding threads (not shown) are formed on the outer circumferential surface of the side finishing portion 50, It is possible to securely and stably install the components in the outer housing 60 by fastening the side finishing part 50 by thread engagement after various configurations are installed inside the outer housing 60. [

The outer housing 60 is provided so as to surround the outer circumferential surfaces of the sleeve 30, the watertight portion 40 and the side finishing portion 50. The outer housing 60 includes the fitting groove 61, the carbon fibers 62, .

The outer housing 60 has a cylindrical shape, and functions as a housing to stably install various components in the present invention. The outer housing 60 has a shape in which a part of the outer circumferential surface is inwardly wedged And the carbon fiber 62 is provided in the fitting groove 61.

At this time, the carbon fibers 62 are inserted into the fitting groove 61 and are provided to surround the outer circumferential surface of the outer housing 60.

Here, the carbon fiber 62 is a material having excellent tensile strength and elasticity, and has excellent dimensional stability at a high temperature and a low thermal expansion effect.

The carbon fiber 62 is a carbon fiber composite material produced by curing a carbon fiber and an epoxy resin. The carbon fiber-epoxy prepreg is wound around the fitting groove 61, The carbon fiber-epoxy resin prepreg is wound around the carbon fiber-epoxy resin prepreg, and then heat and curing is repeated 3 to 10 times to form the carbon fibers 62 in the fitting groove 61 of the outer housing 60.

The carbon fiber composite material is remarkably excellent in x-ray permeability. In the present invention, when CT images of a core 1 having a rock are photographed, it is made of a metal material such as aluminum, Furthermore, it is possible to smoothly perform x-ray CT imaging of the core 1 provided with the rock.

The water pressure supply part 63 is connected to the outer housing 60 and functions to supply water pressure to the core 1 provided with rocks.

Preferably, the water pressure supplied to the core 1 may be 150 to 300 bar.

When the water pressure is applied to the core 1 through the hydraulic pressure supply part 63, the rock is brought into close contact with the inner circumferential surface of the core 1 to form a gap in the rock. At this time, The flow of the fluid in the rock can be observed by performing the CT photographing while the fluid passes through the inside of the rock.

As a result, not only the results of various physical properties of the core 1 having the rock can be obtained but also the precision and reliability according to the result of the photographing can be obtained by performing the x-ray CT imaging smoothly.

The cooling jacket 70 is provided to surround a part of the outer circumferential surface of the outer housing 60 and includes a cooling water supply unit 71.

The cooling jacket 70 allows the temperature inside the pressure device to be adjusted so that the cooling water flows through the cooling water supply part 71 so that the temperature can be adjusted.

The cooling jacket 70 may be made of an acrylic material and spaced apart from the carbon fiber 62 provided in the fitting groove 61 of the outer housing 60 so that the carbon fiber 62 and the cooling jacket 70, An air layer 75 may be formed between the first and second substrates.

When the cooling water is supplied from the cooling water supply unit 71, the cooling water flows along the outer circumferential surface of the cylindrical outer housing 60 through the air layer 75, thereby rapidly controlling the temperature of the entire pressure apparatus within a predetermined time .

That is, the cooling water flows so as to surround the outer circumferential surface of the outer housing 60 through the space in which the air layer 75 is formed, so that temperature control can be efficiently performed in a short time.

Depending on the design conditions, a separate watertight member (not shown) may be further provided between the outer circumferential surface of the outer housing 60 and the inner circumferential surface of the cooling jacket 70 to perform a watertight function, as shown in the accompanying drawings .

Therefore, the cooling water supplied to the air layer 75 through the cooling water supply unit 71 is transferred to the entire air layer 75, but it can be prevented from leaking to the outside.

According to this configuration, the pressure device for x-ray CT using carbon fiber according to the present invention is made of a metal material such as aluminum in order to prevent the problem that photographing is not performed, There is an advantage in allowing x-ray CT imaging of specimens for core flow experiments.

In addition, it is possible to observe the flow of the fluid flowing in the rock through x-ray CT imaging while injecting fluid into the core 1 where the rock is provided, thereby ensuring precision and reliability according to the result of the shooting There is an advantage to be able to.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It can be seen that branch substitution, modification and modification are possible.

1: core 10: core holder
11: fluid supply unit 20: finishing cap
21: through hole 30: sleeve
40: watertight portion 41: watertight member
50: side closure 60: outer housing
61: fitting groove 62: carbon fiber
63: Water pressure supply unit 70: Cooling jacket
71: cooling water supply part 75: air layer

Claims (6)

A core holder (10) provided on both sides of the core (1) so as to form a core (1);
A closure cap (20) provided on the outer side of the core holder (10);
A sleeve (30) provided to surround the outer periphery of the core (1) and the core holder (10);
A watertight portion 40 provided on the outer side of the sleeve 30;
A side surface finishing portion 50 provided outside the watertight portion 40;
An outer housing 60 enclosing an outer circumferential surface of the sleeve 30, the watertight portion 40 and the side finishing portion 50; And
And a cooling jacket 70 surrounding the outer circumference of the outer housing 60,
The core holder 10 is provided with a fluid supply part 11 for supplying fluid from the outside to the core 1,
The finishing cap 20 has a through hole 21 penetrating the inside and outside of the finishing cap 20. The outside surface of the core holder 10 is exposed through the through hole 21,
The watertight portion 40 is made of Teflon and is provided with a watertight member 41 between the outer circumferential surface of the watertight portion 40 and the inner circumferential surface of the outer housing 60,
The side finishing portion 50 is provided on the outer side of the watertight portion 40 and functions to close the outer side of the watertight portion 40. The side finishing portion 50 is coupled to the outer housing 60 by thread engagement,
After the core 1, the core holder 10, the finishing cap 20, the sleeve 30, the watertight portion 40 and the side finishing portion 50 are installed in the outer housing 60, (50) and the outer housing (60) by thread engagement,
The outer housing 60 is formed with a fitting groove 61 in which a part of the outer circumferential surface of the outer housing 60 is inwardly folded and a plurality of carbon fibers 62 inserted into the fitting groove 61 to enclose a part of the outer circumferential surface of the outer housing 60 ),
The outer housing (60) is provided with a water pressure supply part (63) for supplying water pressure to the core (1)
When the water pressure is applied to the core 1 through the hydraulic pressure supply part 63, the rock is brought into close contact with the inner circumferential surface of the core 1 to form a gap in the rock, and the fluid is supplied through the fluid supply part 11 And a CT scan is performed in the process of passing the fluid through the cavity through the cavity,
The cooling jacket 70 is provided with a cooling water supply unit 71 for controlling the temperature by supplying cooling water,
When the cooling water is supplied from the cooling water supply unit 71, cooling water flows along the outer circumferential surface of the outer housing 60 to control the temperature inside the pressure device,
And a flow of fluid flowing through the rock is observed through photographing while injecting a high-pressure fluid into the core where the rock is provided. The pressure device for x-ray CT photographing using carbon fiber.
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