Tracer agent mixing and uniform distribution device
By using an equidistant spiral distribution pipe and a diverter design, the problem of concentration differences and backflow of tracers in the oil well injection pipe was solved, achieving uniform distribution and efficient mixing of tracers, and improving monitoring accuracy and equipment operation stability.
Patent Information
- Application Number
- CN202522176267.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-10-15
AI Technical Summary
In existing technologies, tracers are difficult to distribute evenly within the injection pipe of oil wells, resulting in large concentration differences and a tendency for backflow and stratification, which affects monitoring accuracy and equipment maintenance costs.
The design employs an equidistant spiral distribution tube and a diverter cylinder, enabling multi-point injection through threaded discharge holes and liquid distribution holes. Dynamic mixing is achieved using a sealing piston column and a flexible belt, ensuring uniform mixing and diffusion of the tracer and the aqueous solution.
This method achieves short-distance uniform distribution and thorough mixing of tracers within the well injection pipe, improving the reliability of monitoring data and reducing equipment contamination risks and maintenance costs.
Smart Images
Figure CN223570621U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tracer uniform distribution technical field especially, it relates to a tracer mixing and uniform distribution device. BACKGROUND
[0002] In the oil and gas field development process, tracer technology is widely used in dynamic monitoring of oil reservoir, by injecting tracer into the oil well, the flow path of fluid in the formation can be tracked, the reservoir connectivity and the remaining oil distribution can be judged, and key data support is provided for development plan optimization. The tracer needs to be fully mixed with the water liquid in the oil well filling pipe and uniformly distributed before being injected into the formation, so as to ensure the accuracy of the monitoring data.
[0003] In the prior art, tracer injection is mostly carried out by single pipeline or simple shunt structure, and single-point or a small number of point injection is adopted. The tracer is difficult to diffuse quickly in the filling pipe, resulting in large concentration difference in the cross-section range, and the tracer content in some areas is too low, which affects the subsequent monitoring accuracy. When the supply of tracer is interrupted or the pressure is insufficient, the water liquid in the filling pipe is easy to flow back to the tracer conveying pipeline through the injection channel, polluting the equipment or affecting the next injection efficiency, increasing the maintenance cost. At the same time, the tracer flows into the water liquid in the form of low speed or droplets, and the contact area with the water liquid is limited, so a long pipeline distance is needed to realize preliminary mixing, which cannot meet the needs of short-distance filling scene, and stratification phenomenon is easy to occur due to the difference in flow rate.
[0004] Therefore, it is necessary to provide a new tracer mixing and uniform distribution device to solve the above technical problems. UTILITY MODEL CONTENT
[0005] To solve the above technical problems, the utility model provides a tracer mixing and uniform distribution device.
[0006] The tracer mixing and uniform distribution device provided by the utility model comprises an equidistant spiral distribution pipe, a plurality of thread discharge holes are arranged on the pipe surface of the equidistant spiral distribution pipe in a spiral manner, a detachable shunt cylinder is arranged on each thread discharge hole, the end of the shunt cylinder is a sealing structure, and a plurality of liquid distribution holes are arranged on the cylinder wall of the shunt cylinder in a ring shape.
[0007] A plugging component is arranged in the shunt cylinder, and the plugging component comprises a plugging piston column for opening and closing the liquid distribution hole and a spring fixedly connected with the plugging piston column.
[0008] A plurality of flexible belts are arranged on the outer cylinder wall of the shunt cylinder in a ring shape.
[0009] Preferably, the plugging piston column is slidingly installed in the shunt cylinder and is slidingly connected with the inner wall of the shunt cylinder, a spring is fixedly installed at the end of the plugging piston column away from the thread discharge hole, and the other end of the spring is fixedly connected with the sealing end of the shunt cylinder.
[0010] Preferably, the shunt cylinder is fixedly embedded with a limiting ring, and the limiting ring is located between the shunt cylinder port and the liquid distribution hole, the limiting ring is provided with an expanded ring groove close to the inner ring wall of the plugging piston column, and the column surface of the plugging piston column away from the shunt cylinder sealing end is in a conical structure.
[0011] Preferably, the plurality of annularly distributed flexible belts are fixedly embedded on the annular ring, and the annular ring is fixedly sleeved on the outer cylinder wall of the shunt cylinder.
[0012] Preferably, the shunt cylinder port end is provided with a threaded connection part, the threaded connection part is in threaded fixed connection with the threaded agent discharging hole, and the annular ring is located between the threaded connection part and the liquid distribution hole.
[0013] Preferably, the outer tube port of the equidistant spiral distribution pipe is fixedly installed with a feeding pipe.
[0014] Compared with the related art, the tracer mixing and uniform distribution device has the following beneficial effects:
[0015] The plurality of annularly distributed liquid distribution holes in the shunt cylinder on the equidistant spiral distribution pipe uniformly distribute the tracer into the oil well filling pipe in a multi-point injection mode, and mix with the water liquid in the filling pipe, the injection point can cover the entire cross-sectional range of the filling pipe, so that the tracer can realize uniform distribution after entering the filling pipe, solve the concentration difference problem of the traditional single-point injection, greatly improve the reliability of the monitoring data, and realize short-distance full mixing and uniform distribution of the tracer in the oil well filling pipe, and the dynamic movement of the flexible belt can disturb the mixing area of the tracer and the water liquid, break the stratified flow state, further expand the diffusion range of the tracer, make the mixing process complete in a short distance, adapt to different lengths of the filling pipe scene, do not need to additionally increase the length of the mixing pipeline, and reduce the overall occupied space of the device. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 A preferred embodiment structure diagram of the tracer mixing and uniform distribution device provided by the utility model is shown in the figure;
[0017] Figure 2 A preferred embodiment structure diagram of the tracer mixing and uniform distribution device provided by the utility model is shown in the figure; Figure 1 A preferred embodiment structure diagram of the tracer mixing and uniform distribution device provided by the utility model is shown in the figure;
[0018] Figure 3 A preferred embodiment structure diagram of the tracer mixing and uniform distribution device provided by the utility model is shown in the figure. Figure 2
[0019] The figure mark: 1, equidistant spiral distribution pipe; 1a, threaded dispensing hole; 11, feed pipe; 2, flow divider; 21, threaded connecting part; 2a, liquid distribution hole; 3, blocking component; 31, blocking piston column; 32, spring; 4, limiting ring; 5, annular ring; 6, flexible belt. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0021] The specific implementation of the utility model is described in detail below in combination with specific examples.
[0022] Please refer to Figures 1 to 3 The tracer mixing and uniform distribution device provided in the utility model embodiment comprises an equidistant spiral distribution pipe 1 and a flow divider 2.
[0023] In the embodiment of the utility model, please refer to Figures 1 to 3 The outer pipe opening of the equidistant spiral distribution pipe 1 is fixedly installed with a feed pipe 11, a plurality of threaded dispensing holes 1a spirally distributed along the pipe surface are formed on the pipe surface of the equidistant spiral distribution pipe 1, and each threaded dispensing hole 1a is installed with a detachably connected flow divider 2. The cylinder opening end of the flow divider 2 is provided with a threaded connecting part 21, the threaded connecting part 21 is threadedly fixedly connected with the threaded dispensing hole 1a, the end of the flow divider 2 is a sealed structure, the cylinder opening end of the flow divider 2 is provided with a threaded connecting part 21, and a plurality of annularly distributed liquid distribution holes 2a are formed on the cylinder wall of the flow divider 2.
[0024] It should be noted that the equidistant spiral distribution pipe 1 is installed into the oil well filling pipe through the rack, the feed pipe 11 is connected with the output end of the tracer injection pipe, so that the tracer is distributed along the equidistant spiral distribution pipe 1, and then is distributed and discharged through the plurality of annularly distributed liquid distribution holes 2a on each flow divider 2. Therefore, the tracer is uniformly distributed into the oil well filling pipe in the form of multi-point injection through the plurality of annularly distributed liquid distribution holes 2a in the flow divider 2 distributed on the equidistant spiral distribution pipe 1, and is mixed with the water liquid in the filling pipe. The injection point can cover the entire cross-sectional range of the filling pipe, so that the tracer can realize uniform distribution of concentration after entering the filling pipe, solve the concentration difference problem of traditional single-point injection, greatly improve the reliability of monitoring data, and realize short-distance full mixing and uniform distribution of the tracer in the oil well filling pipe.
[0025] In the embodiment of the utility model, please refer to Figures 1 to 3The shunt cylinder 2 is provided with a blocking component 3, and the blocking component 3 comprises a blocking piston column 31 for opening and closing the liquid distribution hole 2a and a spring 32 fixedly connected with the blocking piston column 31; the blocking piston column 31 is slidingly installed in the shunt cylinder 2 and is in sliding connection with the inner wall of the shunt cylinder 2; and the end of the blocking piston column 31 away from the threaded agent discharging hole 1a is fixedly installed with the spring 32, and the other end of the spring 32 is fixedly connected with the closed end of the shunt cylinder 2.
[0026] It should be noted that when the tracer supply is sufficient, the tracer pushes the blocking piston column 31 to slide to the closed end of the shunt cylinder 2 and compresses the spring 32; when the blocking piston column 31 no longer seals the liquid distribution hole 2a, the tracer can be discharged along the liquid distribution hole 2a; when the tracer supply is insufficient, the blocking piston column 31 is reset and seals the liquid distribution hole 2a under the action of the spring 32, which avoids backflow of water on one hand and enables the tracer to be discharged in a jet form from the liquid distribution hole 2a each time, thereby greatly improving the mixing degree with water.
[0027] Further, the shunt cylinder 2 is fixedly embedded with a limiting ring 4, and the limiting ring 4 is located between the cylinder opening of the shunt cylinder 2 and the liquid distribution hole 2a; the inner ring wall of the limiting ring 4 close to the blocking piston column 31 is provided with an expanded ring groove; and the column surface of the blocking piston column 31 away from the closed end of the shunt cylinder 2 is in a conical structure, so that the blocking piston column 31 can stably seal the liquid distribution hole 2a.
[0028] In the embodiment of the utility model, please refer to Figures 1 to 3 The outer cylinder wall of the shunt cylinder 2 is distributed with a plurality of annularly distributed flexible belts 6; specifically, the plurality of annularly distributed flexible belts 6 are fixedly embedded on the annular ring 5, and the annular ring 5 is fixedly sleeved on the outer cylinder wall of the shunt cylinder 2, and the annular ring 5 is located between the threaded connection part 21 and the liquid distribution hole 2a.
[0029] It should be noted that when the flexible belt 6 is impacted by the tracer, it swings along the water flow direction, and the dynamic movement of the flexible belt 6 can disturb the mixing area of the tracer and water, break the stratified flow state, further expand the diffusion range of the tracer, and complete the mixing process in a short distance, adapt to different lengths of the filling pipe scene, do not need to additionally increase the length of the mixing pipeline, and reduce the overall occupied space of the device.
[0030] The flexible belt 6 is made of polytetrafluoroethylene composite material which is wear-resistant and anti-adhesion, and the surface is treated by smooth coating to reduce the probability of impurity adhesion and adhesion.
[0031] The above only describes the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation in the utility model specification and the attached drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.
Claims
1. A tracer mixing and uniformity device, characterized by, The equal-distance spiral distribution pipe (1) is provided with a plurality of thread distribution holes (1a) spirally distributed on the pipe surface, and each thread distribution hole (1a) is provided with a detachable shunt cylinder (2); the shunt cylinder (2) is provided with a plurality of annularly distributed liquid distribution holes (2a) on the cylinder wall. The shunt cylinder (2) is provided with a blocking component (3), and the blocking component (3) comprises a blocking piston column (31) for opening and closing the liquid distribution hole (2a) and a spring (32) fixedly connected with the blocking piston column (31). The outer cylinder wall of the shunt cylinder (2) is provided with a plurality of annularly distributed flexible belts (6).
2. The tracer blending and uniformity device of claim 1, wherein, The blocking piston column (31) is slidably installed in the shunt cylinder (2) and is in sliding connection with the inner wall of the shunt cylinder (2), and the end of the blocking piston column (31) away from the thread distribution hole (1a) is fixedly provided with a spring (32), and the other end of the spring (32) is fixedly connected with the sealing end of the shunt cylinder (2).
3. The tracer blending and uniformity device of claim 2, wherein, The shunt cylinder (2) is fixedly embedded with a limiting ring (4), and the limiting ring (4) is located between the cylinder opening of the shunt cylinder (2) and the liquid distribution hole (2a), and the inner ring wall of the limiting ring (4) close to the blocking piston column (31) is provided with an expanded ring groove, and the column surface of the blocking piston column (31) away from the sealing end of the shunt cylinder (2) is in a conical structure.
4. The tracer blending and uniformity device of claim 1, wherein, A plurality of annularly distributed flexible belts (6) are fixedly embedded on the annular ring (5), and the annular ring (5) is fixedly sleeved on the outer cylinder wall of the shunt cylinder (2).
5. The tracer blending and uniformity device of claim 4, wherein, The cylinder opening end of the shunt cylinder (2) is provided with a threaded connection part (21), and the threaded connection part (21) is in threaded fixed connection with the thread distribution hole (1a), and the annular ring (5) is located between the threaded connection part (21) and the liquid distribution hole (2a).
6. The tracer blending and uniformity device of claim 1, wherein, The outer pipe opening of the equal-distance spiral distribution pipe (1) is fixedly provided with a feeding pipe (11).