Device for testing primary and intermediate setting of cement paste
By designing a cement slurry primary setting test device and using a combination of a test needle and a positioning ring, the error problem caused by repeated disassembly and assembly of the test mold in oil well cement slurry experiments was solved, and an efficient and stable primary setting test was achieved.
Patent Information
- Application Number
- CN202422464449.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-12
AI Technical Summary
In oil well cement slurry experiments, existing technologies require repeated disassembly and installation of test molds, resulting in large errors in experimental results and low efficiency.
A cement slurry primary setting test device was designed, which included a cup body, a cup cover and a test needle. The test needle was inserted into the cement slurry through a test hole. The device was matched with a positioning ring and an elastic hoop to ensure the stability and repeatability of the test needle and avoid disassembly of the test mold.
By judging the primary setting of cement slurry without disassembling the test mold, experimental errors are reduced, and work efficiency and test stability are improved.
Smart Images
Figure CN223320413U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement slurry primary setting test, in particular to a cement slurry primary setting test device. Background Art
[0002] During the current oil well cement slurry experiment, it is necessary to understand the time and degree of initial setting of the cement slurry. The cement slurry curing test mold needs to be repeatedly disassembled and installed, which will have a certain impact on the experimental results. Utility Model Content
[0003] Therefore, the technical problem to be solved by the present invention is to provide a cement slurry primary setting test device which avoids repeated disassembly and assembly of the test mold, reduces experimental errors and increases work efficiency.
[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a cement slurry primary setting test device, comprising a cup body, a cup cover and a test needle, the cup cover being connected to the cup mouth of the cup body, a test hole being provided on the cup cover, the test needle passing through the test hole and inserted into the cup body; an auxiliary positioning assembly is installed on the top of the cup cover, and the test hole passes through the auxiliary positioning assembly.
[0005] The above-mentioned cement slurry primary setting test device also includes an elastic hoop, one side of which is tightly clamped on the side wall of the test needle outside the cup cover, the test needle slides with the elastic hoop, and the other side of the elastic hoop is connected to the cup cover.
[0006] In the above-mentioned cement slurry primary setting test device, the cup cover is provided with two or more test holes along its circumference, and the test needle is installed in each of the test holes.
[0007] In the cement slurry primary setting test device, the outer sides of the two or more test needles are covered with a same elastic hoop, and the two or more test needles are tightened by the elastic hoop.
[0008] In the above-mentioned cement slurry primary setting test device, the test hole is opened along the axial direction of the cup body.
[0009] The above-mentioned cement slurry primary setting test device, the auxiliary positioning assembly includes a connecting tube and a positioning ring, the connecting tube is coaxially fixedly connected to the top of the cup cover, the positioning ring is coaxially fixedly connected to the top of the connecting tube, the outer diameter of the positioning ring is larger than the outer diameter of the connecting tube, and a positioning hole corresponding to the test hole is opened through the positioning ring, and the end of the test needle passes through the positioning hole and the test hole in sequence.
[0010] In the above-mentioned cement slurry primary setting test device, an elastic hoop is coaxially sleeved outside the connecting tube, and the test needle passes between the elastic hoop and the connecting tube, and the elastic hoop applies pressure to the side wall of the test needle.
[0011] In the above-mentioned cement slurry primary setting test device, a through hole is provided on the cup cover, and in the diameter direction of the cup cover: the through hole is located between the two opposite test holes.
[0012] The technical solution of the utility model has achieved the following beneficial technical effects:
[0013] 1. By setting a test needle in conjunction with the test hole, without disassembling the test mold, by inserting the test needle into the cement slurry, the initial setting condition of the slurry can be judged by the insertion condition of the test needle, which is beneficial to improve the work effect and reduce the experimental error; setting multiple test needles can test the slurry at different positions in different time periods.
[0014] 2. By providing a positioning ring, the stability of the test needle when inserted into the slurry can be improved, and the angle of each test needle when inserted into the slurry can be ensured to be the same; by providing an elastic hoop, the stability of the test needle can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram of the cross-sectional structure of the present utility model;
[0016] Figure 2 A schematic diagram of the top structure of the positioning ring of the utility model.
[0017] The reference numerals in the figure are as follows: 1 - cup body; 2 - cup cover; 3 - test hole; 4 - test needle; 5 - connecting tube; 6 - positioning ring; 7 - positioning hole; 8 - elastic hoop. DETAILED DESCRIPTION
[0018] The cement slurry primary setting test device in this embodiment is as follows: Figure 1 As shown, it includes a cup body 1, a cup cover 2 and a test needle 4. The cup cover 2 is connected to the cup mouth of the cup body 1. A test hole 3 is opened on the cup cover 2. The test needle 4 passes through the test hole 3 and is inserted into the cup body 1. By arranging the test needle to match the test hole, without disassembling the test mold, the test needle is inserted into the cement slurry and the insertion condition of the test needle is used to judge the primary setting condition of the slurry, which is beneficial to improve the working effect and reduce the experimental error. Twelve test holes 3 are opened on the cup cover 2 along its circumference, and the test needle 4 is installed in each of the test holes 3. The test holes 3 are opened along the axial direction of the cup body 1, and multiple test needles are set, which can test the slurry at different positions in different time periods; a through hole is opened on the cup cover 2, and in the diameter direction of the cup cover 2: the through hole is located between two opposite test holes 3.
[0019] like Figure 1-2 As shown, an auxiliary positioning assembly is installed on the top of the cup cover 2, and the test hole 3 passes through the auxiliary positioning assembly. The auxiliary positioning assembly includes a connecting tube 5 and a positioning ring 6. The connecting tube 5 is coaxially fixedly connected to the top of the cup cover 2, and the positioning ring 6 is coaxially fixedly connected to the top of the connecting tube 5. The outer diameter of the positioning ring 6 is larger than the outer diameter of the connecting tube 5. A positioning hole 7 corresponding to the test hole 3 is opened on the positioning ring 6. The end of the test needle 4 passes through the positioning hole 7 and the test hole 3 in sequence. By providing the positioning ring, the stability of the test needle when inserted into the slurry can be improved, and it can be ensured that each test needle has the same angle when inserted into the slurry.
[0020] like Figure 1 As shown, an elastic hoop 8 is coaxially sleeved on the outside of the connecting tube 5, and the test needle 4 passes between the elastic hoop 8 and the connecting tube 5. The elastic hoop 8 applies pressure to the side wall of the test needle 4, thereby increasing the friction between the test needle 4 and the wall of the test hole 3 and / or the positioning hole 7, thereby improving the stability of the test needle 4 so that it can stay at any position. The elastic hoop 8 can be an elastic ring such as an annular spring or a rubber ring, which is elastic and can be tightened inward. By setting the elastic hoop, the stability of the test needle can be maintained.
[0021] In some other embodiments, when there is only one test needle 4, one side of the elastic hoop 8 is tightly clamped on the side wall of the test needle 4 outside the cup cover 2, the test needle 4 slides with the elastic hoop 8, and the other side of the elastic hoop 8 is connected to the cup cover 2.
[0022] In some other implementations, when more than two test needles 4 are used, the same elastic hoop 8 is put on the periphery of the two or more test needles 4, and the two or more test needles 4 are tightened by the elastic hoop 8 to ensure the stability of the test needles 4.
[0023] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the claims of this patent application.
Claims
1. A cement slurry primary setting test device, comprising a cup body (1) and a cup cover (2), wherein the cup cover (2) is connected to the cup mouth of the cup body (1), characterized in that: The cup cover (2) further comprises a test needle (4), a test hole (3) is provided on the cup cover (2), and the test needle (4) passes through the test hole (3) and is inserted into the cup body (1); an auxiliary positioning component is installed on the top of the cup cover (2), and the test hole (3) passes through the auxiliary positioning component.
2. The cement slurry primary setting test device according to claim 1, characterized in that: It also includes an elastic hoop (8), one side of which is clamped tightly on the side wall of the test needle (4) outside the cup cover (2), the test needle (4) and the elastic hoop (8) are slidably matched, and the other side of the elastic hoop (8) is connected to the cup cover (2).
3. The cement slurry primary and secondary setting test device according to claim 1, characterized in that: The cup cover (2) is provided with more than two test holes (3) along its circumference, and each of the test holes (3) is equipped with the test needle (4).
4. The cement slurry primary and secondary setting test device according to claim 2, characterized in that: The outer sides of the two or more test needles (4) are covered with a same elastic hoop (8), and the two or more test needles (4) are tightened by the elastic hoop (8).
5. The cement slurry primary and secondary setting test device according to claim 1, characterized in that: The testing hole (3) is opened along the axial direction of the cup body (1).
6. The cement slurry primary and secondary setting test device according to claim 1, characterized in that: The auxiliary positioning assembly comprises a connecting tube (5) and a positioning ring (6); the connecting tube (5) is coaxially fixedly connected to the top of the cup cover (2); the positioning ring (6) is coaxially fixedly connected to the top of the connecting tube (5); the outer diameter of the positioning ring (6) is larger than the outer diameter of the connecting tube (5); a positioning hole (7) corresponding to the test hole (3) is formed through the positioning ring (6); and the end of the test needle (4) passes through the positioning hole (7) and the test hole (3) in sequence.
7. The cement slurry primary and secondary setting test device according to claim 6, characterized in that: An elastic hoop (8) is coaxially sleeved outside the connecting tube (5), and the test needle (4) passes between the elastic hoop (8) and the connecting tube (5), and the elastic hoop (8) applies pressure to the side wall of the test needle (4).
8. The cement slurry primary and secondary setting test device according to claim 1, characterized in that: A through hole is provided on the cup cover (2), and in the diameter direction of the cup cover (2): the through hole is located between two opposite test holes (3).