Performance testing device for drilling fluid inhibitor

Abstract

The utility model discloses a drilling fluid inhibitor performance testing device which comprises a testing cylinder, a top cover is arranged at the top end of the testing cylinder, a connecting pipe is installed on the top cover, a testing plug is installed at one end of the connecting pipe, and the end, away from the testing plug, of the connecting pipe is installed on an external testing device. A sliding rod is slidably connected to the bottom wall of the testing cylinder, the sliding rod is installed on the bottom wall of the testing cylinder in a sealed mode through a sealing ring, a supporting assembly is arranged at the top end of the sliding rod, a fixing rod is fixedly bonded to the bottom end of the sliding rod, a through groove is formed in the fixing rod, and a base is arranged below the testing cylinder; and a locking rod is fixedly adhered to the top wall of the base. The sliding rod is installed at the bottom of the test cylinder, and the supporting assembly is installed at the top end of the sliding rod, so that the supporting assembly can stably support the test plug in the inner cavity of the test cylinder, and it is guaranteed that the test plug can be stably parked at the needed position.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a drilling fluid inhibitor performance testing device. Background Technology

[0002] During oil development, due to the different geological formations, drilling fluid injection into the formation may cause hydration and expansion, leading to a series of problems such as wellbore instability, drill bit mud buildup, and wellbore cleanup, increasing the difficulty of drilling operations. The common solution is to add appropriate inhibitors to the drilling fluid according to the formation properties of the work area to improve the inhibition performance of the drilling fluid and reduce hydration. Therefore, it is necessary to test the inhibition properties of the drilling fluid in the formation to guide actual operations.

[0003] In the prior art, the authorized patent with publication number CN216117545U discloses a drilling fluid inhibitor performance evaluation device, including a device shell, a bottom gasket, a test plug, a sample layer, and a measuring device. The device shell is a cylindrical body, the bottom gasket is set on the inner bottom surface of the device shell, the sample layer is coaxially fixed on the bottom gasket, and the outer surface is in close contact with the inner wall of the device shell. The test plug is a hollow cylindrical plug made of elastic material. The test plug can effectively test the expansion of the vertically set sample layer in the presence of drilling fluid, thereby realizing the evaluation of the drilling fluid inhibitor performance in an experimental device that is as close to real conditions as possible, ensuring the accuracy of the drilling fluid inhibitor performance evaluation test results.

[0004] However, the above technical solutions still have the following shortcomings in actual use: When using the above device, it is necessary to place the test plug at the corresponding position of the cylindrical sample layer according to the test position required for the experiment. However, the test plug in the above device lacks a support structure and cannot be stably stopped at the required position. Moreover, the position of the test plug is not easy to adjust as needed, which makes the placement of the test plug cumbersome. In this regard, we propose a drilling fluid inhibitor performance testing device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a drilling fluid inhibitor performance testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drilling fluid inhibitor performance testing device, comprising:

[0007] A test cylinder has a top cover at its top, a connecting tube mounted on the top cover, a test plug mounted at one end of the connecting tube, and the end of the connecting tube away from the test plug mounted on an external testing device. A slide rod is slidably connected to the bottom wall of the test cylinder, and the slide rod is sealed to the bottom wall of the test cylinder by a sealing ring. A support assembly is provided at the top of the slide rod, and a fixing rod is fixedly bonded to the bottom end of the slide rod. A through groove is formed on the fixing rod. A base is provided below the test cylinder, and a locking rod is fixedly bonded to the top wall of the base. The locking rod is slidably connected to the through groove. A stud is threadedly connected to the end of the fixing rod near the locking rod. A locking block is rotatably mounted on the end of the stud located in the cavity of the through groove. The locking block is slidably connected to the through groove. A knob is fixedly mounted on the end of the stud away from the locking block.

[0008] Preferably, a scale is fixedly adhered to the top wall of the base, and a pointer is fixedly adhered to the end of the fixing rod away from the locking rod.

[0009] Preferably, two connecting seats are fixedly bonded to the outer wall of the test cylinder, and a connecting rod is fixedly bonded to the bottom wall of the connecting seats. The bottom end of the connecting rod is fixedly bonded to the top wall of the base.

[0010] Preferably, the support assembly includes a connecting block, which is fixedly bonded to the top of the slide bar, and a plurality of annularly distributed support rods are fixedly bonded to the outer side wall of the connecting block.

[0011] Preferably, the locking rod has anti-slip texture on the side wall near the locking block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features a sliding rod installed at the bottom of the test cylinder, with a support component at the top. This support component stably supports the test plug within the test cylinder, ensuring the test plug can be stably positioned as needed. Pushing the sliding rod up and down allows the support component to adjust the test plug's position within the test cylinder. Turning the knob causes a locking block to press against the locking rod, thus limiting and fixing the sliding rod. This facilitates adjustment of the test plug's position and allows for locking after adjustment, ensuring the stability of the test plug when it is in place. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a drilling fluid inhibitor performance testing device proposed in this utility model;

[0015] Figure 2 This is a cross-sectional view of the test cylinder in a drilling fluid inhibitor performance testing device proposed in this utility model;

[0016] Figure 3 The present invention provides a drilling fluid inhibitor performance testing device. Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 4 This is a top view of the support component in a drilling fluid inhibitor performance testing device proposed in this utility model.

[0018] In the diagram: 1. Test cylinder; 2. Top cover; 3. Connecting tube; 4. Test plug; 5. Slide rod; 6. Support assembly; 7. Fixing rod; 8. Through groove; 9. Base; 10. Locking rod; 11. Stud; 12. Locking block; 13. Knob; 14. Scale; 15. Pointer; 16. Connecting seat; 17. Connecting rod; 18. Connecting block; 19. Support rod; 20. Anti-slip texture. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a drilling fluid inhibitor performance testing device, comprising:

[0021] A test cylinder 1 has a top cover 2 at its top, and a connecting tube 3 is mounted on the top cover 2. A test plug 4 is mounted on one end of the connecting tube 3, and the end of the connecting tube 3 away from the test plug 4 is mounted on an external testing device. The connection between the testing device and the test plug 4 is existing publicly available technology and will not be described in detail. A slide rod 5 is slidably connected to the bottom wall of the test cylinder 1. The slide rod 5 is sealed to the bottom wall of the test cylinder 1 by a sealing ring. A support assembly 6 is provided at the top of the slide rod 5. A fixing rod 7 is fixedly bonded to the end of the test cylinder 1. A through groove 8 is provided on the fixing rod 7. A base 9 is provided below the test cylinder 1. A locking rod 10 is fixedly bonded to the top wall of the base 9. The locking rod 10 is slidably connected in the through groove 8. A stud 11 is threadedly connected to the end of the fixing rod 7 near the locking rod 10. A locking block 12 is rotatably installed at the end of the stud 11 located in the inner cavity of the through groove 8. The locking block 12 is slidably connected in the through groove 8. A knob 13 is fixedly installed at the end of the stud 11 away from the locking block 12.

[0022] A scale 14 is fixedly adhered to the top wall of the base 9, and a pointer 15 is fixedly adhered to the end of the fixing rod 7 away from the locking rod 10. By cooperating with the scale 14 and the pointer 15, the adjustment position of the support component 6 can be easily understood.

[0023] Two connecting seats 16 are fixedly bonded to the outer wall of the test cylinder 1. A connecting rod 17 is fixedly bonded to the bottom wall of the connecting seat 16. The bottom end of the connecting rod 17 is fixedly bonded to the top wall of the base 9. Through the cooperation of the connecting seats 16, the connecting rod 17 and the base 9, the test cylinder 1 can be stably fixed on the base 9.

[0024] The support assembly 6 includes a connecting block 18, which is fixedly bonded to the top of the slide rod 5. Multiple annularly distributed support rods 19 are fixedly bonded to the outer side wall of the connecting block 18. When supporting the test plug 4, the drilling fluid can easily flow through the gaps between the multiple support rods 19.

[0025] The locking rod 10 has anti-slip texture 20 on the side wall near the locking block 12 to increase the friction force of the locking block 12 pressing against the locking rod 10.

[0026] Working principle: This utility model installs a slide rod 5 at the bottom of the test cylinder 1, and a support component 6 is installed at the top of the slide rod 5. The support component 6 can stably support the test plug 4 in the inner cavity of the test cylinder 1, ensuring that the test plug 4 can be stably placed in the required position. Pushing the slide rod 5 up and down can cause the support component 6 to move the test plug 4 to adjust its position in the test cylinder 1. By turning the knob 13, the locking block 12 is pressed against the locking rod 10 to limit and fix the slide rod 5. This facilitates the adjustment of the position of the test plug 4 and can lock it after adjustment, ensuring the stability of the test plug 4 when it is placed.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling fluid inhibitor performance testing apparatus, characterized by, include: A test tube (1) is provided with a top cover (2) at the top end of the test tube (1). A connecting tube (3) is installed on the top cover (2). A test plug (4) is installed at one end of the connecting tube (3). The end of the connecting tube (3) away from the test plug (4) is installed on an external test device. A slide rod (5) is slidably connected to the bottom wall of the test tube (1). The slide rod (5) is sealed on the bottom wall of the test tube (1) by a sealing ring. A support assembly (6) is provided at the top end of the slide rod (5). A fixing rod (7) is fixedly glued to the bottom end of the slide rod (5). (7) has a through groove (8) and a base (9) is provided below the test cylinder (1). A locking rod (10) is fixedly bonded to the top wall of the base (9). The locking rod (10) is slidably connected in the through groove (8). A stud (11) is threadedly connected to one end of the fixing rod (7) near the locking rod (10). A locking block (12) is rotatably installed at one end of the stud (11) located in the inner cavity of the through groove (8). The locking block (12) is slidably connected in the through groove (8). A knob (13) is fixedly installed at one end of the stud (11) away from the locking block (12).

2. The drilling fluid inhibitor performance testing apparatus of claim 1, wherein: A scale (14) is fixedly glued to the top wall of the base (9), and a pointer (15) is fixedly glued to the end of the fixing rod (7) away from the locking rod (10).

3. The drilling fluid inhibitor performance testing apparatus of claim 1, wherein: Two connecting seats (16) are fixedly bonded to the outer wall of the test tube (1), and a connecting rod (17) is fixedly bonded to the bottom wall of the connecting seat (16). The bottom end of the connecting rod (17) is fixedly bonded to the top wall of the base (9).

4. The drilling fluid inhibitor performance testing apparatus of claim 1, wherein: The support assembly (6) includes a connecting block (18), which is fixedly bonded to the top of the slide bar (5). Multiple ring-shaped support rods (19) are fixedly bonded to the outer side wall of the connecting block (18).

5. The drilling fluid inhibitor performance testing apparatus of claim 1, wherein: The locking rod (10) has anti-slip texture (20) on the side wall near the locking block (12).

Images