An experimental box for testing the electrical stability of oil-based drilling fluids

Abstract

The utility model relates to oil base drilling fluid test equipment field discloses a kind of test boxes for oil base drilling fluid electric stability test, including box, box side wall is provided with box door, fixedly connected with fixing frame in the box, fixed hole is opened in the inside of the fixing frame, the fixing frame side wall is provided with fixed component, and the box is provided with filter component;Fixed component includes fixed plate, and the fixed plate side wall is slidably connected between the fixing frame, the fixed plate bottom is fixedly connected with fixed block, the fixed plate bottom is fixedly connected with fixed frame, and the fixed frame inside is slidably connected with connecting column.In the utility model, when the fixed plate spacing needs to be adjusted, pull the connecting rod to drive the connecting column, so that the clamping column is separated from the fixed hole and enters the fixed frame, the slider extrudes the spring, then the fixed plate layout is adjusted as required, the connecting rod is loosened after adjustment, the spring rebounds, and the clamping column is clamped into the fixed hole to fix the fixed plate.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment for oil-based drilling fluids, and in particular to a test chamber for testing the electrical stability of oil-based drilling fluids. Background Technology

[0002] In the field of oil exploration and production, the performance of oil-based drilling fluids is crucial to the success and efficiency of drilling operations. Electrical stability, a key characteristic of oil-based drilling fluids, directly affects wellbore stability, the rheological properties of the drilling fluid, and its effectiveness in protecting the formation during drilling. Accurate testing of the electrical stability of oil-based drilling fluids provides important data for optimizing drilling fluid formulations and improving drilling operation quality. With the continuous development of the petroleum industry, research on the performance of oil-based drilling fluids is becoming increasingly in-depth, placing higher demands on the accuracy and efficiency of their electrical stability testing.

[0003] Existing test chambers for testing the electrical stability of oil-based drilling fluids typically employ a relatively fixed sample placement method in their mechanical structure. Some test chambers use simple fixed supports or slots to hold sample containers, utilizing traditional measuring electrodes in contact with the sample to evaluate the electrical stability of oil-based drilling fluids by measuring parameters such as current and voltage between the electrodes. The underlying principle is primarily based on the electrical response characteristics of oil-based drilling fluids under a constant electric field, determining the stability of the drilling fluid by collecting and analyzing this electrical data.

[0004] However, traditional test chambers have a fixed spacing between the fixed plates, which cannot be flexibly adjusted according to the actual sample size and diverse testing requirements when dealing with oil-based drilling fluid samples of different sizes. Therefore, a test chamber for testing the electrical stability of oil-based drilling fluid is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a test chamber for testing the electrical stability of oil-based drilling fluids, aiming to improve the problem in the existing technology where the spacing between the fixed plates is fixed and cannot be flexibly adjusted according to the sample size and testing requirements.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A test chamber for testing the electrical stability of oil-based drilling fluid includes a chamber body, a door provided on the side wall of the chamber body, a fixing frame fixedly connected inside the chamber body, a fixing hole provided inside the fixing frame, a fixing component provided on the side wall of the fixing frame, and a filter component provided inside the chamber body.

[0008] The fixing assembly includes a fixing plate, the sidewall of which is slidably connected to the fixing frame, a fixing block fixedly connected to the bottom of the fixing plate, a fixing frame fixedly connected to the bottom of the fixing plate, a connecting post slidably connected inside the fixing frame, a slider fixedly connected to the sidewall of the connecting post, the sidewall of the slider slidably connected inside the fixing frame, a locking post fixedly connected to the sidewall of the slider, the sidewall of the locking post slidably connected to the fixing frame and the fixing block, the sidewall of the locking post slidably connected inside the fixing hole, a spring sleeved on the sidewall of the connecting post, and a connecting rod fixedly connected to the sidewall of the connecting post.

[0009] As a further description of the above technical solution:

[0010] The filter assembly includes a fan, and the sidewall of the fan is fixedly connected to the inside of the housing;

[0011] As a further description of the above technical solution:

[0012] A filter box is fixedly connected to the side wall of the housing, and an exhaust pipe is fixedly connected to the side wall of the filter box.

[0013] As a further description of the above technical solution:

[0014] A filter plate is slidably connected inside the filter box, and the filter plate is used to intercept larger particulate impurities in the odor.

[0015] As a further description of the above technical solution:

[0016] An activated carbon adsorption plate is slidably connected inside the filter box, and the activated carbon adsorption plate is used to adsorb odors and harmful gases.

[0017] As a further description of the above technical solution:

[0018] Both the filter plate and the activated carbon adsorption plate are fixedly connected to the side walls with handles.

[0019] As a further description of the above technical solution:

[0020] A sealing ring is fixedly connected inside the filter box, and the filter plate and the side wall of the activated carbon adsorption plate are slidably connected between the sealing ring.

[0021] As a further description of the above technical solution:

[0022] One end of the spring is fixedly connected to the side wall of the slider, and the other end of the spring is fixedly connected to the inside of the fixed frame.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, when it is necessary to adjust the spacing of the fixing plates, pull the connecting rod to drive the connecting column, so that the locking column disengages from the fixing hole and enters the fixing frame. The slider compresses the spring, and then the layout of the fixing plates is adjusted as needed. After adjustment, release the connecting rod, the spring rebounds, and the locking column locks into the fixing hole to fix the fixing plate. This solves the problem that the spacing of the fixing plates is fixed and cannot be flexibly adjusted according to the sample size and testing requirements. The above technical solution improves the adaptability of the test chamber to different samples.

[0025] 2. In this utility model, when an odor is generated during the testing of oil-based drilling fluid, the fan is activated to extract the odor from the chamber and send it to the filter box. The filter plate intercepts large particulate impurities and performs initial air filtration. The activated carbon adsorption plate adsorbs harmful gases and odors. The purified air is then discharged through the exhaust pipe. This solves the problem of odor generated during the testing of oil-based drilling fluid affecting the working environment. The above technical solution improves the air quality of the working environment. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a test chamber for testing the electrical stability of oil-based drilling fluids according to the present invention.

[0027] Figure 2 This is a schematic diagram of the internal structure of a test chamber for testing the electrical stability of oil-based drilling fluids according to this utility model.

[0028] Figure 3 This is a schematic diagram of the internal structure of the test chamber for testing the electrical stability of oil-based drilling fluid proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the internal structure of the filter box of a test chamber for testing the electrical stability of oil-based drilling fluids proposed in this utility model.

[0031] Legend:

[0032] 1. Box body; 2. Box door; 3. Fixing frame; 4. Fixing hole; 5. Fixing plate; 6. Fixing frame; 7. Connecting column; 8. Sliding block; 9. Locking column; 10. Spring; 11. Connecting rod; 12. Fan; 13. Filter box; 14. Exhaust pipe; 15. Filter plate; 16. Activated carbon adsorption plate; 17. Handle; 18. Sealing ring; 19. Fixing block. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 - Figure 4 This utility model provides an embodiment of a test chamber for testing the electrical stability of oil-based drilling fluid, comprising a chamber body 1, a door 2 on the side wall of the chamber body 1, a fixing frame 3 fixedly connected inside the chamber body 1, fixing holes 4 inside the fixing frame 3, fixing components on the side wall of the fixing frame 3, and a filter assembly inside the chamber body 1; the fixing components include a fixing plate 5, which provides a support platform for the oil-based drilling fluid sample, the side wall of the fixing plate 5 is slidably connected between the fixing frames 3, a fixing block 19 is fixedly connected to the bottom of the fixing plate 5, and a fixing frame 6 is fixedly connected to the bottom of the fixing plate 5. The fixed frame 6 has a connecting post 7 that is slidably connected inside. A slider 8 is fixedly connected to the side wall of the connecting post 7. The side wall of the slider 8 is slidably connected inside the fixed frame 6. A locking post 9 is fixedly connected to the side wall of the slider 8. The locking post 9 is used to cooperate with the fixing hole 4 to fix or unlock the fixed plate 5. The side wall of the locking post 9 is slidably connected to the fixed frame 6 and the fixed block 19. The side wall of the locking post 9 is slidably connected to the fixing hole 4. A spring 10 is sleeved on the side wall of the connecting post 7. A connecting rod 11 is fixedly connected to the side wall of the connecting post 7. One end of the spring 10 is fixedly connected to the side wall of the slider 8. The other end of the spring 10 is fixedly connected to the inside of the fixed frame 6.

[0035] When the distance between the fixing plates 5 needs to be adjusted, the fixing plates 5 serve as a support platform for placing oil-based drilling fluid samples. At this time, pulling the connecting rod 11 provides the operator with a point of force application, facilitating operation of the entire spacing adjustment mechanism. Pulling the connecting rod 11 moves the connecting column 7, which acts as a connection and transmission mechanism, transmitting the movement of the connecting rod 11 to the locking column 9. The movement of the connecting column 7 then moves the locking column 9. The main function of the locking column 9 is to cooperate with the fixing hole 4 to fix or unlock the fixing plate 5. When the locking column 9 moves, it disengages from the fixing hole 4, thereby releasing the fixing restriction on the fixing plate 5, allowing the fixing plate 5 to move freely. After disengaging from the fixing hole 4, the locking column 9 enters the fixing frame 6. The fixing frame 6 provides a limited space for the movement of the locking column 9, ensuring that the locking column 9 moves within a specific path and range. As the locking column 9 moves, the slider 8 compresses the spring 10. The device can slide within the fixed frame 6, converting the movement of the locking post 9 into a squeezing action on the spring 10. The spring 10 is elastic and stores elastic potential energy when squeezed, which provides the power for the subsequent fixing of the fixed plate 5. The fixed plate 5 is then adjusted according to the sample size and testing requirements. The operator can flexibly change the spacing between the fixed plates 5 according to the actual test sample size and specific test requirements, so as to better meet the needs of different test scenarios and improve the efficiency and accuracy of the test. After adjustment, the connecting rod 11 is released. At this time, the spring 10 rebounds and resets due to the elastic potential energy stored in it. The force generated by the rebound of the spring 10 is transmitted to the locking post 9 through the slider 8 and the connecting post 7, so that the locking post 9 is inserted into the fixing hole 4. After the locking post 9 is inserted into the fixing hole 4, the fixed plate 5 is fixed again to ensure that the fixed plate 5 remains stable during the test and will not change position due to external forces or vibrations, thereby ensuring the stability and reliability of the test.

[0036] Before conducting the electro-hydraulic stability test on oil-based drilling fluids, a comprehensive inspection of all components of the test chamber and the filtration system is required to ensure the equipment is operating normally. Samples should be prepared as required. During the test, if the spacing of the fixing plates 5 used to support the sample needs to be adjusted, the connecting rod 11, which acts as the force application point, can be pulled to move the connecting column 7. This causes the locking column 9, which cooperates with the fixing hole 4 to fix the fixing plate 5, to move away from the fixing hole 4 and enter the fixing frame 6, which limits its movement path and range. This allows the slider 8 to compress the spring 10 to store elastic potential energy. Afterward, the spacing of the fixing plates 5 is adjusted according to the sample size and test requirements to meet different test scenarios. After adjusting the spacing, the connecting rod 11 is released, the spring 10 rebounds, and the force is transmitted through the slider 8 and the connecting column 7 to make the locking column 9 engage with the fixing hole 4, thus fixing the fixing plate 5 again and ensuring the stability and reliability of the test. Subsequently, the sample is placed and the electrodes are accurately installed. The test parameters such as electric field strength, time, temperature, and humidity are set through the control system. The test chamber is started to apply the electric field, and the detection instrument measures and records the electrical parameters in real time. The operator observes and records the relevant phenomena. After the test, the power is turned off, and the equipment is cleaned and maintained.

[0037] Reference Figure 1 , Figure 2 and Figure 5 The filter assembly includes a fan 12, which is fixedly connected to the side wall of the housing 1. A filter box 13 is fixedly connected to the side wall of the housing 1. The filter box 13 provides a closed and orderly space for air filtration. An exhaust pipe 14 is fixedly connected to the side wall of the filter box 13 for discharging purified air. A filter plate 15 is slidably connected inside the filter box 13 for intercepting larger particulate impurities in odors. An activated carbon adsorption plate 16 is slidably connected inside the filter box 13 for adsorbing odors and harmful gases. Handles 17 are fixedly connected to the side walls of both the filter plate 15 and the activated carbon adsorption plate 16. A sealing ring 18 is fixedly connected inside the filter box 13. The side walls of the filter plate 15 and the activated carbon adsorption plate 16 are slidably connected between the sealing ring 18. The sealing ring 18 is used to enhance the sealing performance of the filter box 13.

[0038] Oil-based drilling fluids produce an odor during testing, which not only affects the working environment but may also pose a potential threat to the health of operators. To address this, fan 12 is activated to generate suction, creating airflow within the chamber 1 and drawing out the odor-laden air. This odor-laden air is then transported to the filter chamber 13, which provides a closed and organized space for air filtration. Upon entering the filter chamber 13, the odor-laden air is first intercepted by filter plates 15, which may include dust, debris, and other solid contaminants generated during the testing process. The filter plates 15, with their fine pores... The structure effectively blocks these particulate matter, preventing them from continuing to flow in the air, thus initially purifying the air. After the initial filtration by filter plate 15, large particulate impurities in the air are removed, and then further purification is carried out by activated carbon adsorption plate 16. Activated carbon adsorption plate 16 utilizes the porous structure and strong adsorption performance of activated carbon to adsorb harmful gases and odors in the air, allowing harmful gas and odor molecules to be adsorbed on the surface of activated carbon. Through this adsorption, activated carbon adsorption plate 16 can effectively remove various harmful chemical substances and odor components in the air, such as organic compounds produced by the volatilization of oil-based drilling fluids, thereby significantly improving air quality. The deep purification by the activated carbon adsorption plate 16 makes the air fresher and harmless, preparing it for subsequent emissions. The air, after being dual-purified by the filter plate 15 and activated carbon adsorption plate 16 within the filter chamber 13, is finally discharged through the exhaust pipe 14. The exhaust pipe 14 is the discharge channel for the purified air, guiding the cleaned air to the environment outside the test chamber. During long-term operation of the filter chamber 13, impurities will gradually accumulate on the filter plate 15 and activated carbon adsorption plate 16, leading to adsorption saturation. Therefore, regular cleaning and replacement are necessary to maintain their filtration effect. Handles 17 are fixed to the side walls of the filter plate 15 and activated carbon adsorption plate 16, providing operators with a convenient grip. By holding handle 17, the operator can pull out the filter plate 15 and activated carbon adsorption plate 16 from inside the filter box 13 for necessary cleaning, replacement, or maintenance operations, ensuring that the filtration system always maintains a good working condition. At the same time, a sealing ring 18 is installed inside the filter box 13. The sealing ring 18 enhances the sealing performance of the filter box 13. By tightly fitting the connection between the filter plate 15 and activated carbon adsorption plate 16 and the filter box 13, the sealing ring 18 forms an effective sealing barrier, ensuring that air can only pass through the filter plate 15 and activated carbon adsorption plate 16 for filtration according to a predetermined path, thereby ensuring the integrity and effectiveness of the filtration process and ultimately achieving the goal of keeping the working environment air fresh.

[0039] Working principle: When it is necessary to adjust the distance between the fixing plates 5, the connecting rod 11 is pulled to move the connecting column 7. The movement of the connecting column 7 causes the locking column 9 to move out of the fixing hole 4 and into the fixing frame 6, so that the slider 8 squeezes the spring 10. Then, the fixing plates 5 are adjusted according to the sample size and testing requirements. After the adjustment is completed, the connecting rod 11 is released to allow the spring 10 to spring back and reset, locking the locking column 9 into the fixing hole 4 to fix the fixing plates 5.

[0040] When oil-based drilling fluid is tested, it will produce an odor. The odor is extracted from the chamber 1 by activating the fan 12 and transported to the filter chamber 13. The filter plate 15 intercepts larger particulate impurities in the air entering the filter chamber 13, performing preliminary air filtration. Then, the activated carbon adsorption plate 16 adsorbs harmful gases and odors, and finally, the air is discharged through the exhaust pipe 14. When it is necessary to clean or replace the filter plate 15 and the activated carbon adsorption plate 16, they can be removed by the handle 17. At the same time, a sealing ring 18 is installed inside the filter chamber 13 to enhance the sealing performance of the filter chamber 13 and prevent unfiltered air from leaking from the gaps in the filter chamber 13 during the filtration process. This ensures that the air can only be filtered through the filter plate 15 and the activated carbon adsorption plate 16 according to the predetermined path, keeping the air in the working environment fresh.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test chamber for testing the electrical stability of oil-based drilling fluids, comprising a chamber body (1), characterized in that: The box (1) has a door (2) on its side wall, a fixing frame (3) is fixedly connected inside the box (1), a fixing hole (4) is opened inside the fixing frame (3), a fixing component is provided on the side wall of the fixing frame (3), and a filter component is provided inside the box (1). The fixing assembly includes a fixing plate (5), the side wall of which is slidably connected between the fixing frame (3), a fixing block (19) is fixedly connected to the bottom of the fixing plate (5), a fixing frame (6) is fixedly connected to the bottom of the fixing plate (5), a connecting column (7) is slidably connected inside the fixing frame (6), a slider (8) is fixedly connected to the side wall of the connecting column (7), the side wall of the slider (8) is slidably connected inside the fixing frame (6), a locking column (9) is fixedly connected to the side wall of the slider (8), the side wall of the locking column (9) is slidably connected inside the fixing frame (6) and the fixing block (19), the side wall of the locking column (9) is slidably connected inside the fixing hole (4), a spring (10) is sleeved on the side wall of the connecting column (7), and a connecting rod (11) is fixedly connected to the side wall of the connecting column (7).

2. The test chamber for testing the electrical stability of oil-based drilling fluids according to claim 1, characterized in that: The filter assembly includes a fan (12), the sidewall of which is fixedly connected to the inside of the housing (1).

3. The test chamber for testing the electrical stability of oil-based drilling fluids according to claim 2, characterized in that: A filter box (13) is fixedly connected to the side wall of the box (1), and an exhaust pipe (14) is fixedly connected to the side wall of the filter box (13).

4. The test chamber for testing the electrical stability of oil-based drilling fluids according to claim 3, characterized in that: The filter box (13) has a filter plate (15) slidably connected inside, and the filter plate (15) is used to intercept larger particulate impurities in the odor.

5. The test chamber for testing the electrical stability of oil-based drilling fluids according to claim 4, characterized in that: The filter box (13) is slidably connected to an activated carbon adsorption plate (16), which is used to adsorb odors and harmful gases.

6. The test chamber for testing the electrical stability of oil-based drilling fluids according to claim 5, characterized in that: The filter plate (15) and the activated carbon adsorption plate (16) are both fixedly connected to the side walls with handles (17).

7. The test chamber for testing the electrical stability of oil-based drilling fluids according to claim 6, characterized in that: The filter box (13) is fixedly connected to a sealing ring (18), and the filter plate (15) and the side wall of the activated carbon adsorption plate (16) are slidably connected between the sealing ring (18).

8. The test chamber for testing the electrical stability of oil-based drilling fluids according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the side wall of the slider (8), and the other end of the spring (10) is fixedly connected to the inside of the fixed frame (6).

Images