CN215727574U

CN215727574U - Micro model clamp and experimental device suitable for narrow and small area

Info

Publication number: CN215727574U
Application number: CN202122356788.8U
Authority: CN
Inventors: 邵红云; 夏凌燕; 张云芝; 张贵玲; 牟英华; 赵俊桥; 盖玉叶; 张阳
Original assignee: China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering Shengli Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering Shengli Co
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-02-01
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a micro model clamp and an experimental device suitable for a narrow and small area, wherein the clamp comprises two clamp bodies, namely a left clamp and a right clamp, which are identical in structure and symmetrically arranged; the left clamp is provided with a fluid injection channel, and the right clamp is provided with a fluid injection channel; the fluid injection channel and the fluid injection channel are positioned at the height positions above the glass model. The utility model can realize good sealing of the glass model, occupy small enough space and ensure the smooth implementation of observation work.

Description

Micro model clamp and experimental device suitable for narrow and small area

Technical Field

The utility model relates to the technical field of oil reservoir development experiments, in particular to a microscopic model clamp and an experimental device suitable for a narrow area.

Background

The microscopic visualization experiment is a key project in the oil reservoir development experiment technology. By utilizing the transparent characteristic of the glass visual model, the flowing phenomenon of the fluid in the etched pore canal can be observed, and a foundation is laid for scientific analysis. The general glass model is in a rectangular sheet shape, the corresponding length is not less than 40mm, and in the connection process of the model and the pipeline, a metal clamp is usually adopted, so that the sealing and the strength of the whole model are ensured. The overall dimensions of the jig are controlled to be 20mm x 20mm or more with respect to the length of the mold, and the screw applies pressure to tightly connect the glass mold to the sprue. Usually, two clamps are used jointly, and this anchor clamps adaptable certain length range's glass model uses in a flexible way, and the anchor clamps that have than fixed size have obvious advantage, are the anchor clamps that mainly use at present.

The microscopic visual level develops towards the observation direction of the tiny pores, the pore canal is close to the level of 1 mu m, the actual area of the network and the pattern is correspondingly reduced, usually less than 10mm multiplied by 10mm, and correspondingly, the integral length of the glass model is not more than 50 mm. Meanwhile, the observation objective lens is generally larger than 50 times and the object distance is not larger than 3mm, and clamping the model with the existing clamp generally blocks the pattern or forms an obstacle to the observation device (objective lens) and the like.

Publication (bulletin) No.: CN101504342A, publication (public notice) day: 2009-08-12 belongs to the field of material mechanics testing equipment, and particularly relates to a microscopic film material mechanics biaxial testing test bed. The structure of the test bed is as follows: two lead screws with different vertical surfaces are arranged on the side wall of the rectangular box body, and two sides of each lead screw are respectively provided with a guide rail parallel to the lead screws; two ends of the screw rod penetrate through the side wall of the box body, one end of the screw rod is fixed by double nuts, and the other end of the screw rod is provided with a hand wheel; two sliding blocks are respectively arranged on each lead screw; each slide block is connected with a clamp through a force sensor. The utility model can apply different biaxial stress to the film material, and can be placed in a temperature box to research the mechanical behavior of the film material at different temperatures, and has simple structure and convenient use.

Publication (bulletin) No.: CN201273903Y, publication (public notice) day: 2009-07-15 discloses a high-temperature high-pressure microscopic experiment holder, which is applied to reservoir oil gas seepage visibility experiments in oil field development rooms. Is characterized in that: the middle part of the inner wall of the cylinder body is provided with an annular step, the upper plane of the fixing frame is provided with two annular grooves and O-shaped sealing rings respectively, a fluid inflow hole and a fluid outflow hole are arranged between the two annular grooves, and the micro model is pressed on the upper parts of the two O-shaped sealing rings. The cylinder body is provided with a ring pressure hole which can be connected with a manual pump; the two ends of the cylinder body are respectively provided with a sealing cover, a quartz glass column is arranged in the sealing covers, and the cylinder body, the quartz glass column and the glass baffle form a sealed light-permeable whole. The effect is as follows: the device can adopt different glass models to carry out experiments for a long time under high pressure and high temperature. The light source, the microscope, the camera, the display and the recorder form an imaging system; the displacement pump, the intermediate container, the back pressure valve and the sample receiver form a displacement system. The constant temperature water bath provides constant temperature conditions for the experiment.

Publication (bulletin) No.: CN200985788Y, publication (public notice) day: 2007-12-05 discloses a high-temperature high-pressure glass micro model holder used for water flooding effect and evaluation in the oil and gas field development process. Is characterized in that: the centers of the base of the model bed body and the upper cover of the model bed body are provided with through holes with steps, and glass windows are arranged in the through holes. An O-shaped sealing ring is arranged between the glass window and the inner wall of the central through hole of the model bed body base and the model bed body upper cover. A high-pressure sealed chamber is formed between the base of the model bed body and the upper cover of the model bed body. A high-pressure pipe is fixed on the through hole at the top of the upper cover of the model bed body. The high-pressure closed chamber is internally provided with a model bracket. The microscopic simulation transparent pore model is tightly pressed on the model bracket. The microscopic simulation transparent pore model experimental study under the high-temperature and high-pressure condition of the simulated stratum can be completed, and the model pores and experimental fluid in the clamp holder can be clearly observed under a microscope. The reference value of the obtained experimental data is superior to the current normal temperature and normal pressure experimental result.

In summary, the technical solutions of the above-disclosed technologies, the technical problems to be solved, and the advantageous effects thereof are all different from the present invention, and no technical inspiration exists in the above-disclosed technical documents for further technical features, technical problems to be solved, and advantageous effects thereof.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a microscopic model clamp and an experimental device which are suitable for a narrow area, can realize good sealing of a glass model, can occupy a small enough space, and can ensure smooth implementation of observation work.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the micro model clamp suitable for a narrow area comprises a clamp body, wherein the two clamp bodies are respectively a left clamp and a right clamp, and the left clamp and the right clamp are identical in structure and are symmetrically arranged;

the left clamp is provided with a fluid injection channel, and the right clamp is provided with a fluid injection channel;

the fluid injection channel and the fluid injection channel are positioned at the height positions above the glass model.

Further, the left clamp or the right clamp comprises a base, a screw, a cross beam and a pressure applying column;

the upper end of the screw is arranged in a screw thread hole formed in the cross beam, and the lower end of the screw is arranged in a screw thread hole formed in the base;

the upper end of the pressure applying column is hinged with the cross beam, the fluid injection channel is arranged on the pressure applying column of the left clamp, and the fluid injection channel is arranged on the pressure applying column of the right clamp;

and the lower end surface of the pressure applying column and the upper end surface of the base clamp the glass model.

Furthermore, the starting port of the fluid injection channel faces to the left, and the tail end port of the fluid injection channel faces to the lower part and corresponds to the upper port of the injection hole of the glass model;

the tail end port of the fluid injection channel faces to the right, the initial port of the fluid injection channel faces to the lower side and corresponds to the upper port of the injection hole of the glass model.

Furthermore, a starting port of the fluid injection channel is connected with an inlet external pipeline, and a sealing ring is arranged between a tail end port of the fluid injection channel and an upper port of the injection hole;

the end port of the fluid injection channel is connected with an inlet external pipeline, and a sealing ring is arranged between the initial port of the fluid injection channel and the upper port of the injection hole.

Furthermore, a groove for placing a glass model is formed in the upper end face of the base.

Furthermore, the upper end of the pressure application column is hinged with the cross beam through a bearing shaft.

the microscopic model experiment device suitable for the narrow area comprises a clamp body, an objective table, a glass model and an objective lens;

the two clamp bodies are respectively a left clamp and a right clamp, and the left clamp and the right clamp are identical in structure and are symmetrically arranged;

the height positions of the fluid injection channel and the fluid injection channel are both positioned above the glass model;

the bottom of the clamp body is fixed on an objective table, and an objective table through hole is formed in the center of the objective table;

the two ends of the glass model are respectively clamped by a left clamp and a right clamp, and the glass model comprises an encapsulated glass sheet and a patterned glass sheet which are buckled together up and down;

the objective lens is positioned right above the glass model.

the lower end face of the pressure applying column and the upper end face of the base clamp the glass model;

the initial port of the fluid injection channel faces to the left, the terminal port of the fluid injection channel faces to the bottom and corresponds to the upper port of the injection hole of the glass model;

Furthermore, the encapsulation glass sheet is provided with a vertical injection hole and a vertical injection hole;

the patterned glass sheet is provided with a transverse channel groove, and the middle part of the channel groove is a glass model pattern space;

the left end of the channel groove is an inlet groove communicated with the injection hole, and the right end of the channel groove is an outlet groove communicated with the injection hole.

Furthermore, a groove for placing a glass model is formed in the upper end face of the base; the upper end of the pressure application column is hinged with the cross beam through a bearing shaft.

Compared with the prior art, the utility model has the following beneficial effects:

1. the micro model clamp is suitable for a micro model clamp with a narrow area, so that a micro experiment can effectively research micron-sized pores, and the application requirement of 100 times of an objective lens is met;

2. the clamp keeps the advantage of flexibly adjusting the spacing, ensures the observation space to the maximum extent and only occupies 8mm of width between the glass models; the whole clamp is small in size and suitable for a narrow space when the autoclave and the microscope are jointly applied.

3. The clamp adopts a design mode of a pressure applying column and a flow channel, so that the thickness of the glass model sealing plate can be reduced to the thickness (0.17mm) of a standard cover glass, and the thickness of the current sealing plate is not less than 1 mm; 4. the clamp is convenient to apply and easy to adjust.

Drawings

FIG. 1 is a schematic structural diagram of a microscopic model experimental apparatus adapted to a narrow region according to the present invention;

FIG. 2 is a schematic structural diagram of a micro model fixture adapted to a narrow region according to the present invention;

FIG. 3 is a schematic side view of a narrow-area compliant micro-model fixture according to the present invention;

FIG. 4 is a schematic top view of the micro-model fixture of the present invention adapted to a narrow area;

fig. 5 is a schematic structural view of a glass mold.

In the figure: an object stage 1; a glass model 2; an inlet external pipeline 3; an outlet external pipeline 4; a left clamp 5; a right clamp 6; an objective lens 7;

an objective table through hole 101; a glass model pattern space 201; a sealing glass sheet 202; a patterned glass sheet 203; an injection hole 204; an inlet slot 205; a passage slot 206; a base 501; a column 502; a pressing post 503; a screw 504; a cross beam 505; a bearing shaft 506; fluid is injected into the channel 507.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 5, the present invention provides a technical solution:

the micro model clamp suitable for a narrow area comprises a clamp body, wherein the two clamp bodies are respectively a left clamp 5 and a right clamp 6, and the left clamp and the right clamp are identical in structure and are symmetrically arranged;

the left clamp is provided with a fluid injection channel 507, and the right clamp is provided with a fluid injection channel;

the fluid injection channel and the fluid injection channel are positioned at the height positions above the glass model 2.

Further, the left clamp or the right clamp comprises a base 501, a screw rod 504, a cross beam 505 and a pressing column 503;

Furthermore, a starting port of the fluid injection channel is connected with an inlet external pipeline 3, and a sealing ring is arranged between a tail end port of the fluid injection channel and an upper port of the injection hole;

the end port of the fluid injection channel is connected with the inlet external pipeline 4, and a sealing ring is arranged between the initial port of the fluid injection channel and the upper port of the injection hole.

Further, a groove for placing a glass model is formed in the upper end face of the base, and a vertical column 502 is formed on the side of the groove.

Further, the upper end of the pressure application column is hinged with the cross beam through a bearing shaft 506.

The device structure:

the base, the pressure column, the cross beam and the screw are made of 316 stainless steel.

(1) Base seat

The base is U-shaped, and both sides are in the shape of a column. The flat surfaces are arranged between the upright posts, and the glass model is placed on the flat surfaces and is tightly contacted. The stand not only has the effect of restriction glass model position, is the screw hole in the middle of it, and the cooperation screw rod effect is pressed from both sides the glass model tightly.

(2) Pressure application column

The top of the pressure applying column is provided with a through hole and is hung on the cross beam by a bolt; the middle part is an outward fluid interface, the lower part is provided with an O-shaped ring sealing groove, a fluid channel is communicated with the middle part, when the top beam moves downwards, the pressure is stably transmitted to the glass model by the pressure applying column, the O-shaped ring at the bottom is tightly contacted with the periphery of the injection hole of the glass model, and fluid is ensured to enter the glass model along the inner channel of the pressure applying column.

The suspension design of the top of the pressure applying column enables the pressure applying column to have the independent fine adjustment capacity after being stressed, and the horizontal contact between the bottom O-shaped ring and the glass model is ensured.

And the fluid interface design of the middle part of the pressure application column towards the outside saves the space above the glass model. I.e. the encapsulation glass sheet is above. While the conventional method is generally to encapsulate the glass sheet below, the base is thick and the interface is easy to handle on the base. The thickness Hb of the patterned glass sheet, as viewed from above (typically not less than 2mm), is limited at higher multiples (Hb > object distance), typically 20 times the maximum allowable objective lens. The thickness of the patterned glass sheet cannot be too thin in order to ensure patterning effect. The upper part of the pressure applying column is communicated with the glass model channel, so that the thickness hs of the packaging glass sheet can be reduced as required, even a standard cover glass (0.17mm) is adopted, compared with a conventional clamp, the object distance range is expanded, and the use condition of the objective lens of 100 times can be met.

(3) Cross beam

The two sides of the cross beam are through holes, and the screw penetrates through the through holes and is clamped by the inward movement of the cross beam and the base. The middle of the beam is provided with a space and a through hole, and the pressure applying column is hung on the beam by a bolt.

(4) Screw rod

The screw rod is required to be provided with a flush top and an inner hexagonal groove. The diameter of the nut and the gasket is not larger than the width of the beam.

The experimental process comprises the following steps:

(1) and selecting a clamp with a proper width according to the size of the glass model. The glass model shown in the experiment is: 50 mm. times.20 mm. times.3 mm. The width does between the stand of anchor clamps base: 25 mm; the height adjustable range is 0-10 mm.

(2) First, a side clamp is installed. And horizontally placing the glass model on a clamp base, aligning an O-shaped ring below the pressure applying column to a model injection opening, and slowly and stably pressing down the cross beam to ensure that the pressure applying column is stably contacted with the glass model. And slightly twisting screws on two sides of the beam by using a hexagonal wrench in turn until the glass model is tightly pressed.

(3) Similarly, the other side clamp is installed.

(4) After the clamps are installed, the external pipeline is slowly connected to the pressure applying columns of the two clamps, and the action requirement is stable. The pipeline has no torsional external force and is in a natural stress state.

(5) And placing the mounted clamp and the glass model on an objective table, and adjusting the distance of an objective lens to enable the objective lens to clearly image. And then carrying out research work such as fluid injection and the like.

(6) After the experiment, when dismantling anchor clamps, pay attention to slow operation, avoid the damage of glass model can.

Example 2:

referring to fig. 1 to 5, the present invention provides a technical solution:

Example 3:

referring to fig. 1 to 5, the present invention provides a technical solution:

the microscopic model experiment device suitable for the narrow area comprises a clamp body, an objective table 1, a glass model 2 and an objective lens 7;

the bottom of the clamp body is fixed on an objective table, and an objective table through hole 101 is formed in the center of the objective table;

the two ends of the glass model are respectively clamped by a left clamp and a right clamp, and the glass model comprises an encapsulation glass sheet 202 and a patterned glass sheet 203 which are buckled together up and down;

the objective lens is positioned right above the glass model.

Furthermore, the encapsulation glass sheet is provided with a vertical injection hole 204 and a vertical injection hole;

the patterned glass sheet is provided with a transverse channel groove 206, and the middle part of the channel groove is a glass model pattern space 201;

the left end of the channel groove is an inlet groove 205 communicated with the injection hole, and the right end of the channel groove is an outlet groove communicated with the injection hole.

Although fig. 1 to 5 are used in all the above embodiments, it is apparent to those skilled in the art that separate drawings are not provided for illustration as long as parts or structural features missing from the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiment with more components is only the best embodiment, and the embodiment with less components is the basic embodiment, but the basic object of the utility model can also be achieved, so all the modified embodiments are within the protection scope of the utility model.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The micro model clamp suitable for a narrow area is characterized by comprising two clamp bodies, namely a left clamp and a right clamp, wherein the left clamp and the right clamp are identical in structure and are symmetrically arranged;

2. The microscopic model clamp applicable to narrow areas of claim 1, wherein the left clamp or the right clamp comprises a base, a screw, a beam, and a pressing column;

3. The microscopic model holder for narrow adaptation area of claim 2, wherein the fluid injection channel has a starting port facing left and a terminal port facing down, corresponding to the upper port of the glass model injection hole;

4. The microscopic model clamp applicable to narrow areas of claim 3, wherein a start port of the fluid injection channel is connected with an inlet external pipeline, and a sealing ring is arranged between a tail end port of the fluid injection channel and an upper port of the injection hole;

5. A microscopic model clamp adapted to a narrow area according to claim 2, 3 or 4, wherein the upper end surface of the base is provided with a groove for placing a glass model.

6. The microscopic model clamp suitable for narrow areas of claim 2, 3 or 4, wherein the upper end of the pressing column is hinged with the cross beam through a bearing shaft.

7. The microscopic model experiment device suitable for the narrow area is characterized by comprising a clamp body, an objective table, a glass model and an objective lens;

the objective lens is positioned right above the glass model.

8. The device for micro model experiment with narrow adaptation area according to claim 7, wherein the left clamp or the right clamp comprises a base, a screw, a beam and a pressure applying column;

9. The device for testing micro-models with narrow adaptation areas according to claim 8, wherein the encapsulating glass sheet is provided with a vertical injection hole and a vertical injection hole;

10. The microscopic model experimental device applicable to narrow areas of claim 8 or 9, wherein the upper end surface of the base is provided with a groove for placing a glass model; the upper end of the pressure application column is hinged with the cross beam through a bearing shaft.