A drilling fluid percolation test device
By designing a drilling fluid percolation test device including filter cotton, secondary filter mesh and limiting mechanism, the problem of secondary filtration in the prior art is solved, and direct and accurate impurity judgment is achieved, and the accuracy of the experiment is improved.
Patent Information
- Application Number
- CN202421067290.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-16
AI Technical Summary
After the filtration of the existing drilling fluid percolation test device is completed, the liquid oozing inside the container needs to be filtered twice to determine the impurity content. This method is more troublesome and is prone to residual impurities in the container.
A drilling fluid percolation test device is designed, including a top cover, a filter box, a filter cotton, a secondary filter mesh and a limiting mechanism. The drilling fluid passes through the filter cotton and the secondary filter net. The filter cotton detects the filtering rate. The liquid of the secondary filter net falls into the filter box, and impurities remain on the surface of the secondary filter net. It is convenient to remove and judge the impurity content through the limiting mechanism.
The device directly performs secondary filtration on the drilling fluid passing through the percolation test, avoiding the loss of impurities caused by the secondary filtration, improving the accuracy of the experiment, and reflecting the practicality of the device.
Smart Images
Figure CN222748454U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of percolation test devices, in particular to a drilling fluid percolation test device. Background Art
[0002] Drilling fluid is a special liquid used in the drilling process. During the drilling process, the drilling fluid can form a thin film or a gel-like substance to seal the well wall, prevent groundwater or harmful gases from penetrating into the wellbore, and reduce formation pollution. The drilling fluid permeation test is a test used to evaluate the sealing performance of the drilling fluid on the well wall during the drilling process.
[0003] The drilling fluid percolation test is generally carried out by filtering the drilling fluid through filter cotton. If the liquid percolation rate is low and the percolation liquid does not contain solid particles, it means that the drilling fluid has good sealing performance. On the contrary, if the percolation rate is high or the percolation liquid contains a large amount of solid particles, it means that the sealing performance may be poor. After the filtration is completed, the user often needs to perform a secondary filtration on the liquid that has seeped into the container to determine the impurity content inside. This method is more troublesome, and impurities are likely to remain in the container during the secondary filtration of the liquid. Therefore, a new type of drilling fluid percolation test device is needed to solve the above problems. Utility Model Content
[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:
[0005] A drilling fluid percolation test device comprises: a top cover, a valve is arranged on the surface of the top cover and a filter box is threadedly sleeved on the bottom, filter cotton and a secondary filter screen are arranged inside the filter box, and a limiting mechanism is also included, and the limiting mechanism is used to limit the filter cotton and the secondary filter screen to the inside of the filter box.
[0006] Furthermore, the limiting mechanism includes two plug rings that are slidably inserted into the inner wall of the filter box, the inner wall of the filter box is fixedly installed with a limiting ring, the inner wall of one of the plug rings is fixedly installed with a placement plate, the secondary filter is fixedly inserted into the inner wall of the other plug ring, the filter cotton is arranged above the placement plate, the surface of the placement plate is provided with a plurality of small holes and a connecting rod is fixedly installed on the surface, and the other end of the connecting rod is fixedly inserted into the surface of the secondary filter.
[0007] Furthermore, the top cover comprises a connecting pipe threadedly sleeved on the surface of the filter box (3), a funnel is threadedly sleeved on the surface of the connecting pipe, and the valve is arranged on the surface of the funnel.
[0008] Furthermore, a handle is fixedly mounted on the surface of the filter box.
[0009] Furthermore, a rubber sleeve is fixedly sleeved on the surface of the handle.
[0010] The beneficial effects of the utility model are as follows:
[0011] The utility model, when in use, after the user pours a certain amount of drilling fluid into the top of the top cover and unscrews the valve, the drilling fluid will pass through the filter cotton and the secondary filter screen in sequence, the filter cotton can detect the filtration and infiltration speed of the drilling fluid, the user judges the sealing performance by observing the seepage rate of the drilling fluid, and the drilling fluid passing through the secondary filter screen will fall into the interior of the filter box, and the impurities inside will remain on the surface of the secondary filter screen. The user only needs to disassemble the filter box and take it out through the limiting mechanism to judge the impurity content. This method directly performs secondary filtration on the drilling fluid that passes the infiltration test, can avoid the loss of impurities caused by the secondary filtration, improves the accuracy of the experiment, and fully reflects the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0013] Figure 2 It is a half-section view of the utility model;
[0014] Figure 3 It is a side view of the utility model;
[0015] Figure 4 It is a partial three-dimensional structural schematic diagram of the utility model.
[0016] Figure numerals: 1, top cover; 101, connecting pipe; 102, funnel; 2, valve; 3, filter box; 4, filter cotton; 5, secondary filter screen; 6, limiting mechanism; 601, plug ring; 602, limiting ring; 603, placement plate; 604, connecting rod; 7, handle; 8, rubber sleeve. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.
[0018] The present application provides a drilling fluid percolation test device, which is mainly used to solve the problem that the drilling fluid percolation test is generally to filter the drilling fluid through filter cotton. If the liquid percolation rate is low and the percolation does not contain solid particles, it means that the drilling fluid has good sealing performance. On the contrary, if the percolation rate is high or the percolation contains a large number of solid particles, it means that the sealing performance may be poor. After the filtration is completed, the user often needs to perform a secondary filtration on the liquid that has seeped into the container to determine the impurity content therein. This method is more troublesome, and impurities are also likely to remain in the container during the secondary filtration of the liquid. The following technical solutions are provided, which will be combined with Figure 1-Figure 4 Make a detailed description:
[0019] A drilling fluid percolation test device, comprising: a top cover 1 with a valve 2 on the surface and a filter box 3 threadedly sleeved on the bottom, a filter cotton 4 and a secondary filter screen 5 are arranged inside the filter box 3, and a user can limit the filter cotton 4 and the secondary filter screen 5 inside the filter box 3 through a limiting mechanism 6, wherein the limiting mechanism 6 mainly comprises: a limiting ring 602 fixedly installed inside the filter box 3, two plug-in rings 601 are slidably inserted into the inner wall of the filter box 3, and a placement plate 603 is fixedly installed on the inner wall of one of the plug-in rings 601, and a plurality of small holes are opened on the surface of the placement plate 603, and the secondary filter screen 5 is fixedly inserted on the inner wall of the other plug-in ring 601, and a connecting rod 604 is fixedly installed on the surface of the placement plate 603, and the other end of the connecting rod 604 is fixedly inserted into the inner wall of the other plug-in ring 601. One end is fixedly plugged into the surface of the secondary filter 5. Therefore, when in use, the user places the filter cotton 4 on the surface of the placement plate 603, slides the two plug-in rings 601 into the inner wall of the filter box 3 in turn, and places one of the plug-in rings 601 on the surface of the limiting ring 602 to complete the limiting of the filter cotton 4 and the secondary filter 5. The main components of the top cover 1 are: a connecting pipe 101 threadedly sleeved on the surface of the filter box 3, and a funnel 102 is threadedly sleeved on the surface of the connecting pipe 101. The valve 2 is arranged on the surface of the funnel 102. After the user pours the drilling fluid from the funnel 102, it will slide into the interior of the filter box 3 relatively smoothly. It should be noted that the filter box 3 is made of transparent plastic material, and the user can see the percolation of the drilling fluid inside.
[0020] When in use, the user pours a certain amount of drilling fluid into the top of the top cover 1, unscrews the valve 2, and the drilling fluid will pass through the filter cotton 4 and the secondary filter screen 5 in turn. The filter cotton 4 can detect the filtration rate of the drilling fluid. The user judges its sealing performance by observing the seepage rate of the drilling fluid. The drilling fluid passing through the secondary filter screen 5 will fall into the inside of the filter box 3, and the impurities inside it will remain on the surface of the secondary filter screen 5. The user only needs to remove the filter box 3 and take it out through the limit mechanism 6 to judge the impurity content. This method directly performs secondary filtration on the drilling fluid that passes the filtration test, which can avoid the loss of impurities caused by secondary filtration, improve the accuracy of the experiment, and fully reflect the practicality of the device.
[0021] like Figure 2 As shown, in some embodiments, in order to further optimize the solution, a handle 7 for taking the filter box 3 is fixedly installed on the surface of the filter box 3, and a rubber sleeve 8 for increasing the friction between the hand and the handle 7 is fixedly sleeved on the surface of the handle 7.
[0022] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A drilling fluid percolation test device, characterized in that: include: A top cover (1), wherein a valve (2) is arranged on the surface of the top cover (1) and a filter box (3) is threadedly sleeved on the bottom, wherein filter cotton (4) and a secondary filter screen (5) are arranged inside the filter box (3), and further comprising a limiting mechanism (6), wherein the limiting mechanism (6) is used to limit the filter cotton (4) and the secondary filter screen (5) inside the filter box (3).
2. A drilling fluid percolation test device according to claim 1, characterized in that: The limiting mechanism (6) comprises two insert rings (601) both slidably plugged into the inner wall of the filter box (3); the inner wall of the filter box (3) is fixedly mounted with a limiting ring (602); the inner wall of one of the insert rings (601) is fixedly mounted with a placement plate (603); the secondary filter screen (5) is fixedly plugged into the inner wall of the other insert ring (601); the filter cotton (4) is arranged above the placement plate (603); a plurality of small holes are formed on the surface of the placement plate (603) and a connecting rod (604) is fixedly mounted on the surface; the other end of the connecting rod (604) is fixedly plugged into the surface of the secondary filter screen (5).
3. A drilling fluid percolation test device according to claim 1, characterized in that: The top cover (1) comprises a connecting pipe (101) threadedly sleeved on the surface of the filter box (3), a funnel (102) threadedly sleeved on the surface of the connecting pipe (101), and the valve (2) is arranged on the surface of the funnel (102).
4. A drilling fluid percolation test device according to claim 1, characterized in that: A handle (7) is fixedly mounted on the surface of the filter box (3).
5. A drilling fluid percolation test device according to claim 4, characterized in that: A rubber sleeve (8) is fixedly sleeved on the surface of the handle (7).