Oil field sewage scale inhibitor evaluation device
By designing an evaluation device for scale inhibitors in oilfield wastewater, which utilizes rocker plate screening and hydraulic rod constraint, a direct and rapid evaluation of scaling problems in oilfield wastewater treatment is achieved, improving the accuracy of evaluation results and ease of operation.
Patent Information
- Application Number
- CN202520666350.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-04-10
AI Technical Summary
In existing technologies, scaling problems in oilfield wastewater treatment are difficult to evaluate intuitively and quickly. Traditional methods are complex and the results are not intuitive enough, making it difficult to reflect the effectiveness of scale inhibitors in actual wastewater environments.
An evaluation device for scale inhibitors in oilfield wastewater was designed. By using a rocker plate sieve and hydraulic rod constraint, the scale condition in wastewater with and without scale inhibitors can be directly compared. The effect of the scale inhibitor can be judged by the rotation direction of the rocker plate.
It enables intuitive and rapid evaluation of scale inhibitor effects, improves the accuracy of evaluation results and ease of operation, and can directly reflect the scale inhibitor's inhibition effect in actual wastewater environments.
Smart Images
Figure CN223742444U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of petrochemical technology, and in particular to an evaluation device for scale inhibitors in oilfield wastewater. Background Technology
[0002] The generation of oilfield wastewater is unavoidable during oil extraction. Oilfield wastewater contains a variety of minerals, organic matter, and microorganisms. Scale formation is a serious challenge in the treatment and reuse of this wastewater. Scale formation can lead to a series of problems such as pipe blockage, equipment corrosion, and reduced heat transfer efficiency, thereby increasing production costs, reducing production efficiency, and threatening the safe and stable operation of oilfield production facilities.
[0003] To address scaling issues, oilfields widely use scale inhibitors. However, the market offers a wide variety of scale inhibitors with significant performance differences. Traditional evaluation methods for scale inhibitors are often complex, time-consuming, and provide results that are not readily apparent. For instance, some chemical analysis methods require sophisticated equipment and specialized technicians, and can only indirectly assess the effectiveness of scale inhibitors based on chemical composition, failing to directly reflect the formation and inhibition of scale in actual wastewater environments. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides an evaluation device for scale inhibitors in oilfield wastewater.
[0005] This utility model is achieved using the following technical solution: an oilfield wastewater scale inhibitor evaluation device, comprising an observation box, with support frames fixedly connected to both sides of the upper surface of the observation box, an mounting plate fixedly connected to the upper surface of the support frames, a flow pipe one fixedly connected to one side of the surface of the mounting plate, a flow pipe two fixedly connected to the other side of the surface of the mounting plate, a scale inhibitor addition pipe fixedly connected to the surface of the flow pipe two, a rocker arm rotatably connected to the inner wall of the observation box, a protective sleeve fixedly connected to the inner wall of the observation box, a hydraulic rod fixedly connected to the inner wall of the protective sleeve, a blocking block fixedly connected to the surface of the hydraulic rod, and the blocking block contacting the rocker arm.
[0006] The above technical solution allows for a direct comparison of the scale condition in wastewater with and without scale inhibitors, providing an intuitive evaluation of the scale inhibitor's effectiveness. By using a rocker plate for sieving and a constrained comparative rotation, the impact of the scale inhibitor on the scale can be determined more accurately.
[0007] As a further improvement to the above solution, two blocking blocks are provided, located on the upper and lower surfaces of the rocker respectively.
[0008] The above technical solution ensures that the rocker is in a balanced state before comparison, thereby improving the accuracy of the evaluation results.
[0009] As a further improvement to the above scheme, valves are installed inside both the first and second flow pipes.
[0010] As a further improvement to the above solution, a partition plate is fixedly connected to the inner wall of the rocker.
[0011] As a further improvement to the above solution, a discharge groove is provided on the lower surface of the observation box.
[0012] As a further improvement to the above solution, the inner wall of the rocker is provided with several filter holes, and the rocker is located below the first flow pipe and the second flow pipe.
[0013] The above technical solutions improve the screening efficiency and effectiveness of scale in wastewater, and help to more accurately compare the scale content in wastewater with and without scale inhibitors.
[0014] As a further improvement to the above solution, the surface of the observation box is provided with transparent glass.
[0015] The above technical solutions facilitate real-time observation of the experimental process, improve operational convenience, and enhance the timeliness of experimental result judgment.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This invention uses a hydraulic rod to move two blocking blocks, which are located on the upper and lower surfaces of a rocker plate to constrain the rocker plate and keep it in balance. Then, the hydraulic rod retracts, causing the blocking blocks to disengage from the rocker plate, allowing the rocker plate to rotate freely. By observing the direction of rotation of the rocker plate, if the scale without scale inhibitor moves downwards, and since it is wastewater of the same flow rate, it can be determined that the wastewater with scale inhibitor can effectively reduce scale. The scale content in wastewater with and without scale inhibitor can be directly compared. Through the screening of the rocker plate and the comparative rotation under constraint, the effect of the scale inhibitor can be evaluated more intuitively. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the rocker arm of this utility model;
[0020] Figure 3 This is a schematic diagram of the filter hole structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the blocking block of this utility model.
[0022] Explanation of key symbols:
[0023] 1. Observation box; 2. Support frame; 3. Mounting plate; 4. Flow pipe one; 5. Flow pipe two; 6. Scale inhibitor addition pipe; 7. Rocker; 8. Divider plate; 9. Protective sleeve; 10. Hydraulic rod; 11. Blocking block; 12. Discharge trough; 13. Filter hole; 14. Transparent glass. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0025] Example:
[0026] Please combine Figure 1-4 This embodiment of an oilfield wastewater scale inhibitor evaluation device includes an observation box 1. Support frames 2 are fixedly connected to both sides of the upper surface of the observation box 1. An mounting plate 3 is fixedly connected to the upper surface of the support frames 2. A flow pipe 4 is fixedly connected to one side of the surface of the mounting plate 3, and a flow pipe 5 is fixedly connected to the other side of the surface of the mounting plate 3. A scale inhibitor addition pipe 6 is fixedly connected to the surface of the flow pipe 5. A rocker plate 7 is rotatably connected to the inner wall of the observation box 1. A protective sleeve 9 is fixedly connected to the inner wall of the observation box 1. A hydraulic rod 10 is fixedly connected to the inner wall of the protective sleeve 9. A blocking block 11 is fixedly connected to the surface of the hydraulic rod 10, and the blocking block 11 contacts the rocker plate 7. First, for oilfield wastewater without added scale inhibitor, it is added to the device through the flow pipe 4. After opening the internal valve of the flow pipe 4, the wastewater flows onto the rocker plate 7. 7. The dirt and wastewater are screened, with the dirt remaining on one side of the rocker plate 7. Next, for wastewater with added scale inhibitor, the same flow rate of wastewater as flow pipe 4 is added to flow pipe 2 5. At the same time, scale inhibitor is added to flow pipe 2 5 through scale inhibitor addition pipe 6 and mixed. Then, the internal valve of flow pipe 2 5 is opened, allowing the wastewater with added scale inhibitor to flow onto rocker plate 7 for dirt separation. After that, the hydraulic rod 10 is activated to move the blocking block 11. The two blocking blocks 11 are located on the upper and lower surfaces of rocker plate 7 respectively to constrain rocker plate 7 and keep it in balance. Finally, the hydraulic rod 10 is controlled to retract, causing the blocking block 11 to disengage from rocker plate 7. Rocker plate 7 can then rotate freely. By observing the rotation direction of rocker plate 7, if the dirt without added scale inhibitor moves downward, since it is wastewater with the same flow rate, it can be determined that the wastewater with added scale inhibitor can effectively reduce dirt.
[0027] There are two blocking blocks 11, located on the upper and lower surfaces of the rocker plate 7 respectively. When the hydraulic rod 10 moves them, the rocker plate 7 can be constrained from both the upper and lower directions, so that it can maintain balance when preparing for comparison and avoid the rocker plate 7 from affecting the judgment of the difference in dirt weight due to its own imbalance.
[0028] Both flow pipe 4 and flow pipe 5 are equipped with valves inside. The valves inside flow pipe 4 and flow pipe 5 are used to control the inflow and cessation of wastewater with and without scale inhibitor.
[0029] A partition plate 8 is fixedly connected to the inner wall of the rocker 7.
[0030] The lower surface of the observation box 1 is provided with a discharge groove 12.
[0031] The inner wall of the rocker plate 7 is provided with several filter holes 13. The rocker plate 7 is located below the first flow pipe 4 and the second flow pipe 5. When sewage flows onto the rocker plate 7, some sewage can flow down through the filter holes 13, while dirt is left on the rocker plate 7, which further improves the screening effect of the rocker plate 7 on dirt and sewage. Since the rocker plate 7 is located below the first flow pipe 4 and the second flow pipe 5, it can directly receive sewage flowing out from these two flow pipes and screen it.
[0032] The surface of the observation box 1 is equipped with transparent glass 14, which allows the operator to observe the sieving of dirt on the rocker plate 7, the rotation of the rocker plate 7, and the overall experimental situation inside the device during the experiment.
[0033] The implementation principle of the oilfield wastewater scale inhibitor evaluation device in this application embodiment is as follows: Personnel open the valve inside the first flow pipe 4, injecting oilfield wastewater without scale inhibitor into the device through the first flow pipe 4. At this time, the wastewater flows onto the rocker plate 7. Since the inner wall of the rocker plate 7 has several filter holes 13, the wastewater flows down through the filter holes 13, while the scale remains on the rocker plate 7. The partition plate 8 on the inner wall of the rocker plate 7 separates and restricts the flow of scale, causing the scale to remain on one side of the rocker plate 7. After the scale-inhibiting wastewater has completed scale screening, wastewater with the same flow rate as the first flow pipe 4 is added to the second flow pipe 5. Simultaneously, an appropriate amount of scale inhibitor is added to the second flow pipe 5 through the scale inhibitor addition pipe 6 to ensure thorough mixing of the two within the second flow pipe 5. The valve inside the second flow pipe 5 is then opened, allowing the wastewater with added scale inhibitor to flow into the device and onto the rocker plate 7. The dirt and wastewater are screened, with the dirt remaining on the other side of the rocker plate 7. Since there are two blocking blocks 11, located on the upper and lower surfaces of the rocker plate 7 respectively, the rocker plate 7 is constrained from both directions to keep it balanced. This prevents the imbalance of the rocker plate 7 from affecting the subsequent judgment of the difference in dirt weight. The hydraulic rod 10 is controlled to retract, causing the blocking blocks 11 to detach from the surface of the rocker plate 7 and no longer limit the rocker plate 7. At this time, since there are no obstructions on the upper and lower surfaces, the rocker plate 7 can rotate along the inner wall of the observation box 1. The operator observes the rotation direction of the rocker plate 7 through the transparent glass 14 on the surface of the observation box 1. If the dirt without scale inhibitor moves downward, it means that the dirt with scale inhibitor on the other side has a smaller weight. Since the same flow rate of wastewater was injected before, it can be determined that the wastewater with scale inhibitor can effectively reduce the dirt.
[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. An oilfield produced water scale inhibitor evaluation apparatus, characterized by, The application relates to an observation box, which comprises an observation box (1), support frames (2) fixedly connected to the upper surface of the observation box (1), mounting plates (3) fixedly connected to the upper surfaces of the support frames (2), a flow pipe I (4) fixedly connected to one side of the surface of the mounting plate (3), a flow pipe II (5) fixedly connected to the other side of the surface of the mounting plate (3), a scale inhibitor adding pipe (6) fixedly connected to the surface of the flow pipe II (5), a flap (7) rotatably connected to the inner wall of the observation box (1), a protective sleeve (9) fixedly connected to the inner wall of the observation box (1), a hydraulic rod (10) fixedly connected to the inner wall of the protective sleeve (9), a blocking block (11) fixedly connected to the surface of the hydraulic rod (10), and the blocking block (11) is in contact with the flap (7).
2. An oilfield produced water scale inhibitor evaluation apparatus as defined in claim 1, wherein: The number of the blocking blocks (11) is two, and the blocking blocks are respectively located on the upper surface and the lower surface of the flap (7).
3. An apparatus for evaluating an oilfield wastewater scale inhibitor as defined in claim 1, wherein: The flow pipe I (4) and the flow pipe II (5) are internally provided with valves.
4. An oilfield produced water scale inhibitor evaluation apparatus as defined in claim 1, wherein: The inner wall of the flap (7) is fixedly connected with a partition plate (8).
5. An oilfield produced water scale inhibitor evaluation apparatus as defined in claim 1, wherein: The lower surface of the observation box (1) is provided with a discharge groove (12).
6. An oilfield produced water scale inhibitor evaluation apparatus as defined in claim 1, wherein: The inner wall of the flap (7) is provided with a plurality of filter holes (13), and the flap (7) is located below the flow pipe I (4) and the flow pipe II (5).
7. An oil field produced water scale inhibitor evaluation apparatus as defined in claim 1 wherein: The surface of the observation box (1) is provided with a perspective glass (14).