Water pressure test simulation device
By designing a water pressure test simulation device, and using a core holder and flow meter to measure the permeability of the core, the problem of laboratory simulation testing was solved, and accurate measurement of the permeability of the core and reliable clean water introduction were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-13
AI Technical Summary
The existing technology lacks a water pressure test simulation device, making it impossible to conduct laboratory simulation tests.
A water pressure test simulation device was designed, including a core holder, a first flow meter, a pressure transmitter, and a second flow meter. By holding the core to be tested and using the flow meter and pressure transmitter to record the flow rate and pressure, reliable water introduction and permeability measurement can be achieved.
It enables accurate measurement of the permeability of rock cores, has a simple and reliable structure, and has high practical value and potential for widespread application.
Smart Images
Figure CN223992797U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water pressure testing technology, and in particular to a water pressure testing simulation device. Background Technology
[0002] The water pressure test is an in-situ testing method used to determine the permeability and fracture development of rock masses. It utilizes the weight of a water pump or water column to force clean water into the borehole test section. By measuring the amount of water injected and the applied pressure over a certain period, the relative permeability of the rock mass is calculated, thereby understanding the fracture development. Currently, there is no existing technology to simulate the water pressure test, making laboratory simulation testing impossible.
[0003] Therefore, there is an urgent need to propose a simple, accurate, and reliable water pressure test simulation device. Utility Model Content
[0004] To address the above problems, the purpose of this utility model is to provide a water pressure test simulation device. The technical solution adopted by this utility model is as follows:
[0005] A pressure water test simulation device is disclosed for clamping a core sample to be tested, wherein several pressure water blind holes are drilled in the core sample. The device includes a first flow meter, a pressure transmitter, a core sample holder, and a second flow meter, arranged sequentially along the direction of pressure water flow and connected by pipelines. The first flow meter is connected to pressurized water. The core sample holder includes a lower half of the holder, an upper half of the holder covering the lower half, and a rear end seat and a front end water inlet seat disposed within the lower and upper ends of the holder. The core sample is fixed between the rear end seat and the front end water inlet seat. A sealed connection is made between the core sample and the front end water inlet seat, and between the front end water inlet seat and the lower half of the holder. An outlet pipe and an inlet pipe are provided on the lower half of the holder.
[0006] The front water inlet seat includes a front support plate, a second support inner ring set on the front support plate, a water inlet pipe that is set through the front support plate and corresponds one-to-one with the position of the water pressure blind hole, and several water pressure inlet holes opened on the water inlet pipe; the water inlet pipe is placed inside the water pressure blind hole; the front end of the core body to be tested is sleeved in the second support inner ring;
[0007] The rear end seat includes a rear support plate, a first inner ring disposed on the rear support plate, and several first water outlet holes disposed on the rear support plate and located outside the first inner ring; the rear end of the core body to be tested is sleeved inside the first inner ring; the rear support plate and the front support plate are fixed inside the lower half of the clamp and the upper half of the clamp.
[0008] Furthermore, the lower half of the clamp and the upper half of the clamp are provided with a rear end seat mounting groove and a front end water inlet seat mounting groove; the rear support plate is engaged in the rear end seat mounting groove; and the front support plate is engaged in the front end water inlet seat mounting groove.
[0009] Furthermore, the front support plate is provided with several screw lower support sleeves, and the lower half of the clamp is provided with screw upper support sleeves corresponding to the screw lower support sleeves; a screw is sleeved inside the screw lower support sleeves and the screw upper support sleeves; a locking nut seat is provided on the screw.
[0010] Furthermore, an outer sealing ring mounting groove is provided between the front support plate and the second support inner ring; an outer sealing ring is provided in the outer sealing ring mounting groove; the outer sealing ring is pressed against the front water inlet seat mounting groove ring; an inner sealing ring is provided in the second support inner ring; the inner sealing ring is pressed against the core body to be tested.
[0011] Furthermore, the front end of the water inlet pipe is a blind pipe.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] (1) This utility model sets up a core holder, a first flow meter, a pressure transmitter and a second flow meter, connects pressurized test water to the outside, and uses the first flow meter and pressure transmitter to record the incoming flow and pressure, and uses the second flow meter to record the amount of water permeated, so as to obtain the permeability of the core to be tested.
[0014] (2) This utility model sets up a rear end seat and a front end water inlet seat, and clamps and fixes the core body to be tested. The front end water inlet seat is sealed to the core body to be tested around its perimeter, and the water inlet pipe is placed into the pressure water blind hole to introduce test water, which ensures reliable water intake. In addition, this utility model sets a first water outlet hole on the rear end seat, and the permeable water from the core body is discharged from the first water outlet hole.
[0015] (3) By setting up an upper support sleeve for the screw, a lower support sleeve for the screw, a screw and a locking nut seat, and by rotating the locking nut seat, the screw and the locking nut seat are reliably squeezed between the inner side of the lower half of the clamp and the front water inlet seat, ensuring that the core body to be tested is reliably squeezed, sealed and fixed.
[0016] In summary, this utility model has the advantages of simple structure and high accuracy and reliability, and has high practical and promotional value in the field of water pressure testing technology. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of the rock core to be tested in this utility model.
[0019] Figure 2 This is a schematic diagram of the structure of this utility model.
[0020] Figure 3 This is a schematic diagram of the core holder in this utility model.
[0021] Figure 4 This is a schematic diagram of the core clamping device after removing the upper half of the clamping device according to this utility model.
[0022] Figure 5 This is a cross-sectional schematic diagram of the core holder in this utility model.
[0023] Figure 6 This is a schematic diagram of the lower half of the clamp in this utility model.
[0024] Figure 7 This is a schematic diagram of the structure of the rear end seat in this utility model.
[0025] Figure 8 This is a schematic diagram of the front water inlet seat in this utility model.
[0026] In the above figures, the component names corresponding to the reference numerals are as follows:
[0027] 100. Core sample to be tested; 200. Pressurized water blind hole; 1. Core sample holder; 2. First flow meter; 3. Pressure transmitter; 4. Second flow meter; 11. Lower half of holder; 12. Upper half of holder; 13. Rear end seat; 14. Front water inlet seat; 15. Screw; 16. Locking nut seat; 17. Outer sealing ring; 18. Inner sealing ring; 111. Water outlet pipe; 112. Water inlet pipe; 113. Upper support sleeve of screw; 114. Rear end seat mounting groove ring; 115. Front water inlet seat mounting groove ring; 131. Rear support plate; 132. First inner ring; 133. First water outlet hole; 141. Front support plate; 142. Second support inner ring; 143. Outer sealing ring mounting groove; 144. Lower support sleeve of screw; 145. Water inlet pipe; 146. Pressurized water inlet hole. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of this utility model include, but are not limited to, the following embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.
[0029] In this embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.
[0030] The terms "first" and "second," etc., used in the specification and claims of this embodiment are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.
[0031] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0032] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.
[0033] like Figures 1 to 8 As shown, this embodiment provides a water pressure test simulation device, which clamps the core body 100 to be tested, drills several water pressure blind holes 200 on the core body 100 to be tested, and pressurizes clean water into the water pressure blind holes 200 to obtain the amount of water passing through the core body 100 to be tested.
[0034] Specifically, the pressure water test simulation device includes a first flow meter 2, a pressure transmitter 3, a core holder 1, and a second flow meter 4, which are arranged sequentially along the direction of the pressure water flow and connected by pipelines. The first flow meter 2 is connected to pressurized water, and the pressure and flow rate of the inlet water are collected by the first flow meter 2 and the pressure transmitter 3. The volume of the outlet water is collected by the second flow meter 4.
[0035] In this embodiment, the core holder 1 includes a lower holder 11, an upper holder 12 covering the lower holder 11, a rear end seat 13 and a front end water inlet seat 14 disposed within the lower holder 11 and upper holder 12, a screw 15 disposed between the lower holder 11 and the front end water inlet seat 14, and a locking nut seat 16 sleeved on the screw 15. In this embodiment, the front end water inlet seat 14 is compressed by rotating the locking nut seat 16. Here, the rear end of the core 100 to be tested is limited and fixed within the rear end seat mounting groove ring 114 by the rear end seat 13.
[0036] In this embodiment, the front water inlet seat 14 includes a front support plate 141, a second support inner ring 142 disposed on the front support plate 141, a water inlet pipe 145 disposed through the front support plate 141 and corresponding one-to-one with the position of the water pressure blind hole 200, several water pressure inlet holes 146 opened on the water inlet pipe 145, and an outer sealing ring mounting groove 143 disposed between the front support plate 141 and the second support inner ring 142. An outer sealing ring 17 is disposed within the outer sealing ring mounting groove 143, and the outer sealing ring 17 is pressed against the front water inlet seat mounting groove ring 115. Here, the water inlet pipe 145 is placed within the water pressure blind hole 200. An inner sealing ring 18 is disposed within the second support inner ring 142, and the inner sealing ring 18 is pressed against the core body 100 to be tested. Furthermore, in this embodiment, the front support plate 141 is placed within the front water inlet seat mounting groove ring 115.
[0037] The lower half of the clamp 11 and the upper half of the clamp 12 are provided with a rear end seat mounting groove ring 114 and a front end water inlet seat mounting groove ring 115. In this embodiment, the rear support plate 131 is engaged in the rear end seat mounting groove ring 114, and the front support plate 141 is engaged in the front end water inlet seat mounting groove ring 115. In addition, several screw lower support sleeves 144 are provided on the front support plate 141, and screw upper support sleeves 113 corresponding to the screw lower support sleeves 144 are provided in the lower half of the clamp 11. The screw 15 is placed in the screw lower support sleeves 144 and the screw upper support sleeves 113. In this embodiment, the locking nut seat 16 is pressed against the lower support sleeve 144 of the screw. By rotating the locking nut seat 16, the screw 15 moves forward and is pressed into the upper support sleeve 113 of the screw. By continuing to rotate the locking nut seat 16, the front water inlet seat 14 is locked in the front water inlet seat mounting groove ring 115.
[0038] In this embodiment, the rear end seat 13 includes a rear support plate 131, a first inner ring 132 disposed on the rear support plate 131, and several first water outlet holes 133 formed on the rear support plate 131 and located outside the first inner ring 132. The rear end of the core body 100 to be tested is fitted inside the first inner ring 132, and the rear support plate 131 and the front support plate 141 are fixed within the lower half of the clamp 11 and the upper half of the clamp 12.
[0039] The following is a brief description of the usage process in this embodiment:
[0040] First, the core sample 100 to be tested is installed in the core sample holder 1. Specifically, the rear end of the core sample 100 is placed in the first inner ring 132, and the water inlet pipe 145 is inserted, and the front water inlet seat 14 is installed. During this process, the outer sealing ring 17 and the inner sealing ring 18 need to be installed in advance, and the front end of the core sample 100 is pressed against the inner sealing ring 18. The screw 15 is attached to the bottom of the screw lower support sleeve 144, the rear end seat 13 is inserted into the rear end seat mounting groove ring 114, and the front water inlet seat 14 is placed into the front water inlet seat mounting groove ring 115. The locking nut seat 16 is rotated so that the front end of the screw 15 is pressed against the upper support sleeve 113 of the screw. The locking nut seat 16 is rotated and tightened so that the front water inlet seat 14 is pressed against the outer sealing ring 17, and the front water inlet seat 14 is pressed and sealed in the front water inlet seat mounting groove ring 115. Finally, the upper half of the holder 12 is covered.
[0041] Then, connect the core holder 1, the first flow meter 2, the pressure transmitter 3, the second flow meter 4, and external pressurized clean water to conduct the test.
[0042] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any changes made based on the design principles of this utility model, or any non-creative changes made on this basis, shall fall within the scope of protection of this utility model.
Claims
1. A pressure water test simulation device, which clamps a core body (100) to be measured, a plurality of pressure water blind holes (200) being drilled in the core body (100) to be measured, characterized in that, The pressure water test simulation device comprises a first flow meter (2), a pressure transmitter (3), a core body holder (1) and a second flow meter (4) which are sequentially arranged along the direction of the pressure water flow and are connected by pipelines; the first flow meter (2) is connected to the water under pressure; the core body holder (1) comprises a lower holder half (11), an upper holder half (12) which is covered on the lower holder half (11), and a rear end seat (13) and a front end water inlet seat (14) which are arranged in the lower holder half (11) and the upper holder half (12); the core body (100) to be tested is fixed between the rear end seat (13) and the front end water inlet seat (14); the core body (100) to be tested and the front end water inlet seat (14) and the front end water inlet seat (14) and the lower holder half (11) are sealingly connected; the lower holder half (11) is provided with a water outlet pipe (111) and a water inlet pipe (112); The front end water inlet seat (14) comprises a front support disc (141), a second support inner ring (142) arranged on the front support disc (141), a water inlet branch pipe (145) penetratingly arranged on the front support disc (141) and corresponding to the position of the pressure water blind hole (200), and a plurality of pressure water inlet holes (146) formed on the water inlet branch pipe (145); the water inlet branch pipe (145) is arranged in the pressure water blind hole (200); the front end of the core body (100) to be tested is sleeved in the second support inner ring (142); The rear end seat (13) comprises a rear support disc (131), a first inner ring (132) arranged on the rear support disc (131), and a plurality of first water outlet holes (133) formed on the rear support disc (131) and arranged on the outer side of the first inner ring (132); the rear end of the core body (100) to be tested is sleeved in the first inner ring (132); the rear support disc (131) and the front support disc (141) are fixed in the lower holder half (11) and the upper holder half (12).
2. A pressurized water test simulation apparatus according to claim 1, wherein The lower holder half (11) and the upper holder half (12) are provided with a rear end seat mounting groove ring (114) and a front end water inlet seat mounting groove ring (115); the rear support disc (131) is clamped in the rear end seat mounting groove ring (114); the front support disc (141) is clamped in the front end water inlet seat mounting groove ring (115).
3. A pressurized water test simulation apparatus according to claim 2, wherein A plurality of screw lower support sleeves (144) are arranged on the front support disc (141), and a screw upper support sleeve (113) corresponding to the screw lower support sleeve (144) is arranged in the lower holder half (11); a screw (15) is sleeved in the screw lower support sleeve (144) and the screw upper support sleeve (113); a locking nut seat (16) is arranged on the screw (15).
4. A pressurized water test simulation apparatus according to claim 2, wherein An outer sealing ring mounting groove (143) is arranged between the front support disc (141) and the second support inner ring (142); an outer sealing ring (17) is arranged in the outer sealing ring mounting groove (143); the outer sealing ring (17) is extruded on the front end water inlet seat mounting groove ring (115); an inner sealing ring (18) is arranged in the second support inner ring (142); the inner sealing ring (18) is extruded on the measured core body (100).
5. A pressurized water test simulation apparatus according to claim 1, wherein The front end of the water inlet branch pipe (145) is a blind pipe.