Acid rock reaction single rock plate crack simulation device

Abstract

The utility model discloses an acid rock reaction single rock plate crack simulation device which comprises a stable base, an angle adjusting frame, a protection box and a bottom layer pressure simulation assembly, the bottom end of the angle adjusting frame is fixedly installed on the stable base, the protection box is installed on the angle adjusting frame through angle fastening bolts, and the bottom layer pressure simulation assembly is installed on the stable base. A shooting assembly and a lifting cylinder are installed on the top of the inner side of the protection box, the bottom end of the lifting cylinder and the bottom layer pressure simulation assembly are connected and installed together, the bottom layer pressure simulation assembly is composed of an annular cavity wall and a fixed glass layer installed on the top of the annular cavity wall, an annular cavity in the annular cavity wall is plugged with an annular plug ring, and the annular plug ring is connected with the bottom layer pressure simulation assembly. A pressing glass layer is installed in a plug ring of the annular plug ring, an air pressure sensor is installed at the bottom of the fixing glass layer, and a sliding hole is formed in the bottom of the side face of the protection box. The device has the beneficial effects that the protection performance is good, and crack changes in the acid salt reaction process can be conveniently observed on the outer side and recorded in an image mode.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas exploitation auxiliary simulation devices, in particular to a single rock plate crack simulation device for acid-rock reaction. Background Technique

[0002] Acidification is the main technical means for developing carbonate reservoir at the present stage. It can effectively improve the connectivity between the wellbore and the reservoir and reduce blockage. When carrying out acidification operation, it is necessary to carry out acid-salt reaction simulation experiments on corresponding technical parameters. The acid-rock reaction single rock plate crack simulation device is recorded in the publication number CN110208265A. It observes through the light transmittance of glass. However, glass has a certain risk of cracking after bearing pressure, and when injecting acid liquid, if the pipeline breaks, the acid liquid is also easy to splash out, with poor protection, and it is observed through a microscope probe, and the face needs to be close, so the observation is extremely inconvenient. Content of the Utility Model

[0003] The purpose of the utility model is to provide a single rock plate crack simulation device for acid-rock reaction to solve the above problems.

[0004] The utility model realizes the above purpose through the following technical solutions:

[0005] A single rock plate crack simulation device for acid-rock reaction, including a stable base, an angle adjustment frame, a protective box and a bottom layer pressure simulation assembly. The bottom end of the angle adjustment frame is fixedly installed on the stable base. The protective box is installed on the angle adjustment frame through angle fastening bolts. A shooting assembly and a lifting cylinder are installed on the inner top of the protective box. The bottom end of the lifting cylinder is connected and installed with the bottom layer pressure simulation assembly. The bottom layer pressure simulation assembly is composed of an annular cavity wall and a fixed glass layer installed on the top of the annular cavity wall. An annular plug ring is inserted into the annular cavity in the annular cavity wall. A pressed glass layer is installed in the plug ring of the annular plug ring. A gas pressure sensor is installed at the bottom of the fixed glass layer. A sliding hole is opened at the bottom of the side of the protective box. A bracket is inserted into the sliding hole. A single rock plate is placed on the bracket. Liquid inlet plugs and liquid discharge plugs are respectively installed on both sides of the single rock plate. A touch display screen is installed on the top of the protective box.

[0006] Further, a liquid inlet joint and a liquid discharge joint are installed on the protective box. The liquid inlet joint is connected and installed to the liquid inlet plug through a liquid inlet hose. The liquid discharge joint is connected to the liquid discharge plug through a liquid discharge hose.

[0007] Further, angle marks are engraved on the angle adjustment frame, and a pointer is installed on the protective box.

[0008] Further, an air supplement hole is opened on the annular cavity wall, and an air supplement valve is installed on the outer hole edge of the air supplement hole.

[0009] Further, a plurality of moving wheels are installed at the bottom of the bracket, and one end of the bracket extends to the outside of the protective box and is installed with a pull-out baffle.

[0010] The beneficial effects are as follows: The acid-rock reaction single rock slab crack simulation device of the present invention has good protection performance through the overall protection of the protective box. Through the shooting of the internal shooting assembly, it is convenient to observe the crack changes during the acid-salt reaction on the outside and record them in the form of images. Description of the Drawings

[0011] Figure 1 is a structural diagram of an acid-rock reaction single rock slab crack simulation device of the present invention;

[0012] Figure 2 is a schematic internal view of the protective box of an acid-rock reaction single rock slab crack simulation device of the present invention;

[0013] Figure 3 is a partially enlarged schematic structural view of an acid-rock reaction single rock slab crack simulation device of the present invention.

[0014] The description of the reference numerals is as follows:

[0015] 1, stable base; 2, angle adjustment frame; 3, protective box; 4, touch display screen; 5, bottom layer pressure simulation assembly, 51, annular cavity wall, 52, fixed glass layer, 53, pressed glass layer, 54, annular plug ring, 55, air pressure sensor, 56, air supply valve; 6, bracket; 7, shooting assembly; 8, lifting cylinder; 9, moving wheel; 10, liquid discharge joint; 11, liquid inlet joint; 12, angle fastening bolt; 13, pointer; 14, angle scale; 15, pull-out baffle; 16, liquid inlet plug; 17, liquid inlet hose; 18, liquid discharge plug; 19, liquid discharge hose; 20, single rock slab. Detailed Embodiments

[0016] The present invention will be further described below with reference to the drawings:

[0017] As Figures 1 - 3 shown, an acid-rock reaction single rock slab crack simulation device is composed of a stable base 1, an angle adjustment frame 2, a protective box 3 and a bottom layer pressure simulation assembly 5;

[0018] The bottom end of the angle adjustment bracket 2 is fixedly installed on the stable base 1, and the protective box 3 is installed on the angle adjustment bracket 2. Specifically, an angle fastening bolt 12 is installed on the angle adjustment bracket 2, and the end of the angle fastening bolt 12 is screwed to the side of the angle adjustment bracket 2. When tightened, the angle is fixed and the protective box 3 is clamped. At the inner top of the protective box 3, a shooting assembly 7 and a lifting cylinder 8 are installed. There are at least two groups of lifting cylinders 8. In this embodiment, the lifting cylinder 8 is an electric cylinder, and the bottom end of the lifting cylinder 8 is connected and installed together with the bottom layer pressure simulation assembly 5;

[0019] The bottom layer pressure simulation assembly 5 is composed of an annular cavity wall 51 and a fixed glass layer 52 installed on the top of the annular cavity wall 51. An annular plug ring 54 is inserted into the annular cavity in the annular cavity wall 51. A pressed glass layer 53 is installed in the plug ring of the annular plug ring 54. A barometric pressure sensor 55 is installed at the bottom of the fixed glass layer 52. When pressing, the pressed glass layer 53 is used for pressing, and it will not cause occlusion with the fixed glass layer 52. The shooting assembly 7 is used to record its high-definition images and transmit them to the touch display screen 4 installed on the top of the protective box 3;

[0020] A sliding hole is opened at the bottom of the side of the protective box 3. A bracket 6 is inserted into the sliding hole. A single rock slab 20 is placed on the bracket 6. Liquid inlet plugs 16 and liquid discharge plugs 18 are respectively installed on both sides of the single rock slab 20. They are used to simulate the process of acid entering and leaving during the acid-rock reaction, and the plug bodies are all made of acid-resistant corrosion materials.

[0021] As Figures 1 - 3 shown, the present utility model also discloses the following various more optimized specific structures:

[0022] A liquid inlet joint 11 and a liquid discharge joint 10 are installed on the protective box 3. The liquid inlet joint 11 is connected and installed to the liquid inlet plug 16 through a liquid inlet hose 17, and the liquid discharge joint 10 is connected to the liquid discharge plug 18 through a liquid discharge hose 19.

[0023] Angle scales 14 are marked on the angle adjustment bracket 2, and a pointer 13 is installed on the protective box 3. The pointer 13 aligns with the scale marks 14, which is convenient for precise angle adjustment and grasping the rotation angle of the protective box 3.

[0024] An air supplement hole is opened on the annular cavity wall 51, and an air supplement valve 56 is installed on the outer hole edge of the air supplement hole, which is convenient for air supplement. To prevent the annular plug ring 54 from falling off, a limiting convex part is provided at the inner bottom of the annular cavity wall 51 to block it.

[0025] A plurality of moving wheels 9 are installed at the bottom of the bracket 6. One end of the bracket 6 extends to the outside of the protective box 3 and a pull baffle 15 is installed.

[0026] As Figures 1 - 3Before the acid-rock reaction single rock slab crack simulation device shown is used, it is necessary to customize the single rock slab. After preparing the single rock slab, place it on the bracket 6. After installing the liquid inlet plug 16 and the liquid discharge plug 18 and pushing them into the protection box 3, start the lifting cylinder 8 to press down, so that the pressing glass layer 53 is pressed onto the single rock slab 21. The glass used here is all high-strength glass and is pressed to the set pressure. Adjust the rotation angle of the protection box 3, start to input acid liquid through the external acid liquid pump group, and observe the implementation through the high-definition image taken by the shooting assembly 7. The image can be output and recorded.

[0027] Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An acid-rock reaction single rock plate crack simulation device, characterized in that: The invention comprises a stable base, an angle adjustment frame, a protective box and a bottom pressure simulation assembly, wherein the bottom end of the angle adjustment frame is fixedly mounted on the stable base, the protective box is mounted on the angle adjustment frame by means of angle fastening bolts, a shooting assembly and a lifting cylinder are mounted on the inner top of the protective box, the bottom end of the lifting cylinder is connected and mounted to the bottom pressure simulation assembly, the bottom pressure simulation assembly consists of an annular cavity wall and a fixed glass layer mounted on the top of the annular cavity wall, an annular plug ring is provided in the annular cavity of the annular cavity wall, a pressed glass layer is mounted in the plug ring of the annular plug ring, an air pressure sensor is mounted on the bottom of the fixed glass layer, a sliding hole is provided on the bottom side of the protective box, a bracket is inserted in the sliding hole, a single rock plate is placed on the bracket, a liquid inlet plug and a liquid discharge plug are respectively mounted on both sides of the single rock plate, and a touch display screen is mounted on the top of the protective box.

2. The acid-rock reaction single rock plate crack simulation device according to claim 1, characterized in that: The protection box is provided with a liquid inlet joint and a liquid discharge joint. The liquid inlet joint is connected to the liquid inlet plug via a liquid inlet hose, and the liquid discharge joint is connected to the liquid discharge plug via a liquid discharge hose.

3. The acid-rock reaction single rock plate crack simulation device according to claim 1, characterized in that: The angle adjustment frame is engraved with an angle mark, and the protection box is equipped with a pointer.

4. The acid-rock reaction single rock plate crack simulation device according to claim 1, characterized in that: An air supply hole is provided on the annular cavity wall, and an air supply valve is installed on the outer hole edge of the air supply hole.

5. The acid-rock reaction single rock plate crack simulation device according to claim 1, characterized in that: A plurality of moving wheels are installed at the bottom of the bracket, and one end of the bracket extends to the outside of the protection box and is installed with a drawable baffle.

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