Thickened oil profile control device
By using conveniently replaced circular filter cloth and spiral branch heating assembly in the heavy oil dissecting device, the problem of difficult replacement of the filter mesh and poor fluidity of the dissecting agent is solved, and the efficiency of heavy oil extraction is improved.
Patent Information
- Application Number
- CN202521093838.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2035-05-30
AI Technical Summary
The filter mesh of existing heavy oil dispensing devices is difficult to replace, and the high viscosity of heavy oil dispensing agent leads to poor fluidity, which easily blocks the pipeline and affects the efficiency of heavy oil extraction.
A heavy oil dissecting device is designed, including a fluid conduit, a spiral branch tube and a heating assembly. The dissecting agent is filtered using a conveniently replaced circular filter cloth and annular filtrate stand, and the dissecting agent is heated through the spiral branch tube to reduce viscosity and improve fluidity.
It realizes convenient replacement of filter cloth, uniform heating of the profile agent, reduces viscosity, improves fluidity and conveying efficiency, reduces pipeline conveying pressure loss, and enhances the heavy oil mining effect.
Smart Images
Figure CN223062428U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oilfield development, in particular to a profile control device for viscous oil. Background Technique
[0002] Profile control of viscous oil is an important technology for improving the recovery rate of viscous oil in oilfield development. It mainly aims at problems such as uneven water flooding and water breakthrough of injected water during the exploitation of high-viscosity crude oil. Generally, crude oil with a ground density greater than 0.943 g / cm 3 and an underground viscosity greater than 50 centipoises is called viscous oil. When exploiting viscous oil, generally, after injecting the profile control string for fine-layer division of viscous oil into the production well, a profile control agent is injected to improve the interaction between oil and water, enhance the permeability and recovery rate of the viscous oil layer. And the profile control agent for viscous oil exploitation needs to be filtered to prevent blockage of the injection pipeline or formation pores. The filter screens of the currently used filters are difficult to replace, and there is a hidden danger that the profile control agent has poor fluidity during pipeline transportation due to its high viscosity.
[0003] Therefore, it is necessary to provide a new profile control device for viscous oil to solve the above technical problems. Content of the Utility Model
[0004] To solve the above technical problems, the utility model provides a profile control device for viscous oil.
[0005] The profile control device for viscous oil provided by the utility model includes a liquid guide pipe. Docking internal screw mouths and a tail screw mouth are respectively arranged at both ends of the liquid guide pipe. And a plurality of annularly distributed branch pipes are fixedly installed on the pipe wall of the liquid guide pipe close to the tail screw mouth. A spiral branch pipe is installed on each branch pipe, and a heating component for heating the profile control agent in the spiral branch pipe is installed on each spiral branch pipe;
[0006] A threaded end cap is inserted on the tail screw mouth and is used for sealing the tail screw mouth by threaded connection. And an annular filter rack is fixedly installed on the inner cover surface of the threaded end cap. A circular filter cloth for filtering the profile control agent and a clamping component for fixing the circular filter cloth are arranged in the annular filter rack.
[0007] Preferably, the clamping component includes a fixed ring and a sliding ring. The fixed ring is fixedly installed in the annular filter rack, and an inner ring groove is formed on the fixed ring. The sliding ring is slidably installed in the annular filter rack, and a pressing ring that matches the inner ring groove is fixedly installed on the ring surface of the sliding ring opposite to the inner ring groove.
[0008] Preferably, a plurality of annularly distributed screw holes are formed on the fixed ring, and a plurality of annularly distributed threaded through holes are formed on the sliding ring. A fixing screw is inserted into each threaded through hole and is connected by thread.
[0009] Preferably, the fixing screws correspond to the screw holes one by one.
[0010] Preferably, the heating assembly comprises an annular frame, in which a plurality of heating tubes distributed in an annular manner are fixedly mounted, and the annular frame is fixedly mounted on the inner tube wall of the spiral branch pipe.
[0011] Compared with the related art, the heavy oil profile control device provided by the utility model has the following beneficial effects:
[0012] The utility model filters the profile controlling agent through a circular filter cloth which is easy to disassemble; the heating tube heats and controls the temperature of the profile controlling agent, and the spiral branch pipe increases the heating stroke of the profile controlling agent, so that the heating time is longer and the heat transfer is more uniform, which greatly reduces the viscosity of the profile controlling agent, makes the fluidity better, reduces the pressure loss during the transportation process, facilitates transportation in the pipeline, and improves the transportation efficiency. At the same time, in the on-site application of the oil field, the heated profile controlling agent can more smoothly enter the formation through the pipeline of the water injection well. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A structural schematic diagram of a preferred embodiment of the heavy oil profile control device provided by the utility model;
[0014] Figure 2 for Figure 1 A schematic diagram of the structure of the catheter shown;
[0015] Figure 3 for Figure 1 A schematic diagram of the installation structure of the annular filtrate holder and the clamping assembly on the threaded end cap is shown;
[0016] Figure 4 for Figure 1 The structural schematic diagram of the spiral branch pipe shown;
[0017] Figure 5 for Figure 1 Schematic diagram of the structure of the heating component shown.
[0018] Numbers in the figure: 1, liquid guide tube; 11, docking inner thread; 12, tail thread; 13, branch pipe; 2, spiral branch pipe; 3, threaded end cap; 4, annular filtrate rack; 5, circular filter cloth; 6, clamping assembly; 61, fixing ring; 61a, inner ring groove; 61b, screw hole; 62, sliding ring; 621, pressing ring; 63, fixing screw; 7, heating assembly; 71, annular rack; 72, heating tube. DETAILED DESCRIPTION
[0019] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0020] The following describes in detail the specific implementation of the present utility model in combination with specific embodiments.
[0021] Please refer to Figures 1 to 5 , a profile control device for viscous oil provided by an embodiment of the present utility model, the profile control device for viscous oil includes a liquid guide pipe 1, a spiral branch pipe 2, a circular filter cloth 5, a clamping assembly 6 and a heating assembly 7.
[0022] In an embodiment of the present utility model, please refer to Figures 1 to 5 , docking internal screw mouths 11 and tail screw mouths 12 are respectively arranged at both ends of the liquid guide pipe 1, and a plurality of annularly distributed branch pipes 13 are fixedly installed on the pipe wall of the liquid guide pipe 1 close to the tail screw mouth 12. A threaded end cap 3 which is threadedly connected and used to block the tail screw mouth 12 is inserted on the tail screw mouth 12, and an annular filtrate rack 4 is fixedly installed on the inner cover surface of the threaded end cap 3. A circular filter cloth 5 for filtering the profile control agent and a clamping assembly 6 for fixing the circular filter cloth 5 are arranged in the annular filtrate rack 4;
[0023] The clamping assembly 6 includes a fixed ring 61 and a sliding ring 62. The fixed ring 61 is fixedly installed in the annular filtrate rack 4, and an inner ring groove 61a is opened on the fixed ring 61. The sliding ring 62 is slidably installed in the annular filtrate rack 4, and a pressing ring 621 which is matched with the inner ring groove 61a is fixedly installed on the ring surface of the sliding ring 62 opposite to the inner ring groove 61a. A plurality of annularly distributed screw holes 61b are opened on the fixed ring 61, and a plurality of annularly distributed threaded through holes are opened on the sliding ring 62. A fixed screw 63 which is threadedly connected is inserted in each threaded through hole, and the fixed screw 63 corresponds to the screw hole 61b one by one.
[0024] It should be noted that: the docking internal screw mouth 11 on the liquid guide pipe 1 is docked with the discharge port of the profile control agent preparation tank. Subsequently, the circular filter cloth 5 is placed into the annular filtrate rack 4 from the cavity on the side of the annular filtrate rack 4, and then the circular filter cloth 5 is laid flat on the inner ring groove 61a opened on the fixed ring 61. The sliding ring 62 is translated along the annular filtrate rack 4, so that the pressing ring 621 on the sliding ring 62 tightly presses the circular filter cloth 5 located at the inner ring groove 61a. Subsequently, the fixed screw 63 is tightened so that the fixed ring 61 and the sliding ring 62 are fixed to each other, thereby completing the installation of the circular filter cloth 5; the annular filtrate rack 4 is inserted into the tail screw mouth 12 opened on the liquid guide pipe 1, and the threaded end cap 3 is rotated so that the threaded end cap 3 seals the tail screw mouth 12. Therefore, when the profile control agent enters the tail side of the liquid guide pipe 1, it is filtered by the circular filter cloth 5 to ensure the quality of the profile control agent;
[0025] When it is necessary to replace the circular filter cloth 5, just unscrew the threaded end cap 3 from the liquid guide pipe 1, loosen the fixing screw 63, slide the sliding ring 62 away from the fixing ring 61, and then the circular filter cloth 5 can be taken out and a new circular filter cloth 5 can be replaced. The overall operation is simple and convenient.
[0026] In this solution, multiple groups of clamping components 6 in the annular filtrate rack 4 can be set. After the clamping component 6 is inserted into the liquid guide pipe 1, it is only necessary to ensure that the fixing ring 61 in the clamping component 6 closest to the threaded end cap 3 is located in front of the branch pipe 13.
[0027] In this embodiment: In order to increase the pressure of the profile control agent during transportation in the liquid guide pipe 1, a screw conveyor or other pressurizing equipment (not limited here) can be added between the profile control agent preparation tank and the liquid guide pipe 1.
[0028] In the embodiment of the present utility model, please refer to Figures 1 to 5 , a spiral branch pipe 2 is installed on each branch pipe 13, and a heating component 7 for heating the profile control agent in the spiral branch pipe 2 is installed on each spiral branch pipe 2. The heating component 7 includes an annular frame 71, and a plurality of annularly distributed heating pipes 72 are fixedly installed in the annular frame 71, and the annular frame 71 is fixedly installed on the inner side wall of the spiral branch pipe 2.
[0029] It should be noted that: Multiple annularly distributed spiral branch pipes 2 are installed on the liquid guide pipe 1, so that the profile control agent can be stored in different containers at the same time. The profile control agent in the liquid guide pipe 1 can also be heated by the heating pipes 72 on the spiral branch pipes 2. The temperature of the profile control agent is controlled by heating with the heating pipes 72. The spiral branch pipes 2 increase the heating travel of the profile control agent, making its heating time longer and the heat more uniform. Heating can reduce the viscosity of the profile control agent, making its fluidity better, facilitating transportation in the pipeline, reducing the pressure loss during transportation, reducing the load of the transportation equipment, and improving the transportation efficiency. In the on-site application in the oilfield, the heated profile control agent can more smoothly enter the formation through the pipeline of the injection well.
[0030] The working principle of the heavy oil profile control device provided by the present utility model is as follows:
[0031] Dock the docking internal screw thread 11 on the liquid guide pipe 1 with the discharge port of the profile control agent preparation tank. Subsequently, place the circular filter cloth 5 into the annular filtrate rack 4 from the cavity on the side of the annular filtrate rack 4, and then lay the circular filter cloth 5 flat on the inner ring groove 61a opened in the fixed ring 61. Slide the sliding ring 62 along the annular filtrate rack 4, so that the pressing ring 621 on the sliding ring 62 tightly presses the circular filter cloth 5 located at the inner ring groove 61a. Then tighten the fixing screw 63 to fix the fixed ring 61 and the sliding ring 62 to each other, thus completing the installation of the circular filter cloth 5. Insert the annular filtrate rack 4 into the tail-end screw thread 12 opened in the liquid guide pipe 1, and rotate the threaded end cap 3 to seal the tail-end screw thread 12. Therefore, when the profile control agent enters the tail side of the liquid guide pipe 1, it is filtered by the circular filter cloth 5 to ensure the quality of the profile control agent. When it is necessary to replace the circular filter cloth 5, just unscrew the threaded end cap 3 from the liquid guide pipe 1, loosen the fixing screw 63, and slide the sliding ring 62 away from the fixed ring 61, then the circular filter cloth 5 can be taken out and a new circular filter cloth 5 can be replaced. The overall operation is simple and convenient. Multiple annularly distributed spiral branch pipes 2 are installed on the liquid guide pipe 1, so that the profile control agent can be stored in different containers at the same time. The profile control agent in the liquid guide pipe 1 can also be heated by the heating pipe 72 on the spiral branch pipe 2. The temperature of the profile control agent is controlled by heating with the heating pipe 72. The spiral branch pipe 2 increases the heating stroke of the profile control agent, making its heating time longer and the heat more uniform. Heating can reduce the viscosity of the profile control agent, making its fluidity better, facilitating transportation in the pipeline, reducing the pressure loss during transportation, reducing the load of the transportation equipment, and improving the transportation efficiency. In the application in the oil field site, the heated profile control agent can enter the formation more smoothly through the pipeline of the injection well.
[0032] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated herein.
[0033] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.
Claims
1. A profile control device for heavy oil, characterized in that, It includes a liquid guide pipe (1), with a docking internal screw thread (11) and a tail screw thread (12) provided at both ends of the liquid guide pipe (1), and a plurality of annularly distributed branch pipes (13) fixedly installed on the pipe wall of the liquid guide pipe (1) near the tail screw thread (12). A threaded end cap (3) is inserted on the tail screw thread (12) and is threadedly connected to block the tail screw thread (12), and an annular filtrate rack (4) is fixedly installed on the inner cover surface of the threaded end cap (3). A circular filter cloth (5) for filtering the profile control agent and a clamping assembly (6) for fixing the circular filter cloth (5) are arranged in the annular filtrate rack (4). A spiral branch pipe (2) is installed on each of the branch pipes (13), and a heating assembly (7) for heating the profile control agent in the spiral branch pipe (2) is installed on each of the spiral branch pipes (2).
2. The profile control device for heavy oil according to claim 1, characterized in that, The clamping assembly (6) includes a fixed ring (61) and a sliding ring (62). The fixed ring (61) is fixedly installed in the annular filtrate rack (4), and an inner ring groove (61a) is formed on the fixed ring (61). The sliding ring (62) is slidably installed in the annular filtrate rack (4), and a pressing ring (621) that matches the inner ring groove (61a) is fixedly installed on the ring surface of the sliding ring (62) opposite to the inner ring groove (61a).
3. The profile control device for heavy oil according to claim 2, characterized in that, A plurality of annularly distributed screw holes (61b) are formed on the fixed ring (61), and a plurality of annularly distributed threaded through holes are formed on the sliding ring (62). A fixed screw (63) that is threadedly connected is inserted into each threaded through hole.
4. The profile control device for viscous oil according to claim 3, wherein The fixed screws (63) correspond to the screw holes (61b) one by one.
5. The profile control device for viscous oil according to claim 4, wherein The heating assembly (7) includes an annular frame (71), and a plurality of annularly distributed heating pipes (72) are fixedly installed in the annular frame (71). The annular frame (71) is fixedly installed on the inner pipe wall of the spiral branch pipe (2).