Wellhead filtering structure convenient to install

Abstract

The utility model discloses a wellhead filter structure convenient to install, which comprises a filter cartridge, a filter screen is erected at the center of the inner side of the filter cartridge, the outer side of the filter screen is correspondingly embedded and butted with the inner wall of the filter cartridge in the left-right direction, and the filter screen is obliquely erected downwards from left to right; a flow guide pipe is horizontally erected on the left side of the filter screen, the right end of the flow guide pipe is fixedly communicated with the filter cylinder, a one-way valve is fixedly communicated with the left side of the top of the flow guide pipe, and a pressure pump is fixedly communicated with the center of the top of the one-way valve; a clamping ring is clamped to the outer side of the right end of the blow-off pipe in a sealed mode, and a blow-off valve is fixedly communicated with the center of the right side of the clamping ring, so that the mechanical rapid cleaning operation of the filter screen is completed, the filter screen does not need to be manually taken down independently for cleaning, the time wasted by dismounting and mounting the filter screen is removed while manpower waste is avoided, the cleaning efficiency is improved, and stable circulation of a water injection channel is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to water injection well filtration technical field, especially a wellhead filter structure convenient to install. BACKGROUND

[0002] Water injection well is used to inject water into oil layer, in the oilfield development process, through the special water injection well, water is injected into the oil reservoir, maintains or restores oil layer pressure, makes the oil reservoir have stronger driving force, so as to improve the exploitation speed and recovery of oil reservoir, multiple water injection wells constitute water injection well group, and the injection of water injection well group is completed by water distribution room.

[0003] The conventional filter device is usually arranged in the wellhead to intercept and filter the water injection passage, which is not easy to install, and the accumulated impurities on the filter screen need to be removed and cleaned regularly, which consumes a lot of time and energy. UTILITY MODEL CONTENTS

[0004] The utility model discloses a wellhead filter structure convenient to install, which can flush the filter screen from left to right, so that the accumulated impurities on the upper surface of the filter screen can be discharged outside the water injection well, and the mechanical and rapid cleaning operation of the filter screen can be completed without manually removing and cleaning the filter screen, thereby avoiding the waste of labor and time, improving the cleaning efficiency, and maintaining the stable flow of the water injection passage.

[0005] In order to achieve the above object, a wellhead filter structure convenient to install is provided, comprising: a filter cartridge, the upper and lower ends of the filter cartridge are symmetrically equipped with stop valves, the right side control end of each stop valve is equipped with a stop flow rotating wheel, the opposite side of each stop valve is respectively communicated and fixed with an upper well pipe and a lower well pipe, the inside center of the filter cartridge is equipped with a filter screen, the outside of the filter screen is correspondingly embedded and butt jointed with the inner wall of the filter cartridge in the left-right direction and is inclined downward from left to right, the left side of the filter screen is horizontally equipped with a flow guide pipe and the right end thereof is communicated and fixed with the filter cartridge, the top left side of the flow guide pipe is communicated and fixed with a check valve, the top center of the check valve is communicated and fixed with a pressure pump, the top input end of the pressure pump is communicated and fixed with a water inlet pipe, the right side of the filter screen is horizontally equipped with a blow-off pipe and the left end thereof is communicated and fixed with the filter cartridge, the right end outside of the blow-off pipe is sealingly clamped with a clamping ring, the right side center of the clamping ring is communicated and fixed with a blow-off valve, the top control end of the blow-off valve is equipped with a rotating disc, the right side center of the filter screen is fixedly connected with a cross rod, the right end of the cross rod is fixedly connected with a ring buckle, the bottom center of the ring buckle is fixedly connected with a limiting plug, the bottom end of the limiting plug is correspondingly inserted into the inner wall of the blow-off pipe and is slidingly matched therewith in the up-down direction, the filter screen is obliquely arranged in the water injection passage of the water injection well to intercept and filter impurities therein, meanwhile, the flow guide pipe and the blow-off pipe are respectively communicated with the left and right sides of the filter screen and the clean water is flushed from left to right on the filter screen by the pressure pump, so that the impurities accumulated on the upper surface of the filter screen can be horizontally flushed into the blow-off pipe and discharged from the water injection well together with the clean water through the L-shaped blow-off pipe, thereby completing the mechanical and rapid cleaning operation of the filter screen without manually removing the filter screen for cleaning, avoiding the waste of manpower and time for disassembling and assembling the filter screen, improving the cleaning efficiency and maintaining the stable flow of the water injection passage.

[0006] According to the wellhead filter structure convenient to install, the flow guide pipe and the blow-off pipe are both designed in an elliptical shape and the inner side of each thereof is provided with a plurality of horizontal flow guide grooves. The cleaning water flow covers the left-right direction of the filter screen to perform comprehensive flushing operation.

[0007] According to the wellhead filter structure convenient to install, the upper end of the water inlet pipe is communicated and fixed with a water tank in a water distribution room. The clean water is provided nearby.

[0008] According to the wellhead filter structure convenient to install, the outer side of the rotating disc is round-angled in the up-down direction and a layer of anti-skid adhesive tape is covered on the corresponding round-angled surface. The rotating disc is prevented from slipping.

[0009] According to the wellhead filter structure convenient to install, the right side output end of the blow-off valve is communicated and fixed with an L-shaped blow-off pipe and a recovery bucket is placed right below the water outlet of the L-shaped blow-off pipe. The filtered impurities are vertically introduced into the recovery bucket together with the clean water for sedimentation and recovery.

[0010] According to the wellhead filter structure convenient to install, the right upper portion of the auxiliary filter screen is kept stable, and is prevented from being continuously impacted by water flow and deformed.

[0011] The above-mentioned scheme has the beneficial effects that:

[0012] In the utility model, the filter screen is obliquely arranged in the water injection passage of the water injection well to intercept and filter the impurities, the flow guide pipe and the sewage pipe are communicated with the left and right sides of the filter screen respectively, the filter screen is washed from left to right by clean water by using the pressurizing pump, the impurities accumulated on the upper surface of the filter screen are horizontally washed into the sewage pipe and discharged outside the water injection well together with the clean water through the L-shaped sewage pipe, the mechanical and rapid cleaning operation of the filter screen is completed, the filter screen does not need to be manually taken down and cleaned, the time wasted by disassembling and assembling the filter screen is removed, the cleaning efficiency is improved, and the stable flow of the water injection passage is maintained.

[0013] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in connection with the drawings and embodiments;

[0015] Figure 1 It is the erecting position schematic view of filter screen in the utility model one kind convenient to install's wellhead filter structure;

[0016] Figure 2 It is the connecting structure schematic view of sewage pipe in the utility model one kind convenient to install's wellhead filter structure;

[0017] Figure 3 It is the connecting structure schematic view of stop valve in the utility model one kind convenient to install's wellhead filter structure;

[0018] Figure 4 It is the whole schematic view of the utility model one kind convenient to install's wellhead filter structure.

[0019] LEGEND:

[0020] 1, filter cartridge;2, stop valve;3, intercepting runner;4, upper well pipe;5, lower well pipe;6, filter screen;7, flow guide pipe;8, check valve;9, pressurizing pump;10, water inlet pipe;11, sewage pipe;12, snap ring;13, sewage valve;14, L-shaped sewage pipe;15, turntable;16, crossbar;17, ring buckle;18, limiting plug;19, inclined pull rod. DETAILED DESCRIPTION

[0021] This part will describe the specific embodiments of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the function of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0022] Referring to Figures 1-4 The utility model embodiment provides a wellhead filter structure convenient to install, it includes: filter bowl 1, the upper and lower ends of filter bowl 1 are symmetrically equipped with stop valve 2, the right side control end of stop valve 2 is equipped with cut-off runner 3, the opposite side of stop valve 2 is respectively communicated and fixed with upper well pipe 4 and lower well pipe 5, the inside center of filter bowl 1 is equipped with filter screen 6, the outside of filter screen 6 is correspondingly embedded and butt joint with the inner wall of filter bowl 1 in left and right direction and it is inclined and equipped from left to right downward, the filter bowl of independent erection is adopted and the upper and lower ends thereof are controlled to cut off, which is convenient for subsequent on-off cooperation sewage.

[0023] The left side of filter screen 6 is horizontally equipped with flow guide pipe 7 and its right end is communicated and fixed with filter bowl 1, the top left side of flow guide pipe 7 is communicated and fixed with check valve 8, the top center of check valve 8 is communicated and fixed with pressure pump 9, the top input end of pressure pump 9 is communicated and fixed with water inlet pipe 10, the upper end of water inlet pipe 10 is extended and communicated and fixed with the water tank of water distribution room, the right side of filter screen 6 is horizontally equipped with sewage pipe 11 and its left end is communicated and fixed with filter bowl 1, flow guide pipe 7 and sewage pipe 11 are all oval design and the inside surface of both is equipped with several horizontal direction flow guide grooves, the right end outside of sewage pipe 11 is sealed and clamped with snap ring 12, the right side center of snap ring 12 is communicated and fixed with sewage valve 13, the right side output end of sewage valve 13 is communicated and fixed with L type sewage pipe 14, the water outlet of L type sewage pipe 14 is placed with recovery bucket directly below, the top control end of sewage valve 13 is equipped with turntable 15, the outside of turntable 15 is all treated with round corner in up and down direction and a layer of antiskid adhesive tape is covered on the corresponding round corner section, clean water is washed from left to right to filter screen comprehensively, and then the impurities accumulated on its upper surface can be horizontally washed into sewage pipe and discharged with clean water from L type sewage pipe outside injection well, and the mechanical rapid cleaning operation of filter screen is completed.

[0024] The right side center of filter screen 6 is fixedly connected with crossbar 16, the right end of crossbar 16 is fixedly connected with ring buckle 17, the bottom center of ring buckle 17 is fixedly connected with limiting insertion rod 18, the bottom end of limiting insertion rod 18 is correspondingly inserted into the inner wall of sewage pipe 11 and is in up and down sliding cooperation, the right side upper portion of filter screen 6 is fixedly connected with diagonal pull rod 19, the right end of diagonal pull rod 19 is fixedly connected with crossbar 16 downwardly inclined, limiting insertion rod is used for limiting crossbar in horizontal direction, ring buckle is used for being hooked with hook tool to pull out filter screen outwardly to replace it, and the replacement operation is carried out for the corrosion damage deformation problem of filter screen.

[0025] Working principle: in the utility model, the filter screen 6 is obliquely arranged in the water injection passage of the water injection well to intercept and filter the impurities therein, the flow guide pipe 7 and the sewage pipe 11 are respectively communicated with the left and right sides of the filter screen 6, and the clean water is flushed from left to right on the filter screen 6 by using the pressurizing pump 9, so that the impurities accumulated on the upper surface of the filter screen 6 can be flushed into the sewage pipe 11 and discharged outside the water injection well together with the clean water by the L-shaped sewage pipe 14, the mechanical and rapid cleaning operation of the filter screen 6 is completed, the filter screen 6 does not need to be manually removed and cleaned, the waste of manpower is avoided, the waste time of disassembling and assembling the filter screen 6 is removed, the cleaning efficiency is improved, and the stable flow of the water injection passage is maintained.

[0026] The impurities intercepted and filtered on the filter screen have various cleaning modes, one of which is that the filter screen is obliquely arranged, when the filter screen is impacted by the water flow vertically downward, the horizontal direction component force is generated and the impurities on the upper left surface of the filter screen are pushed to the right, at this time, the sewage valve can be directly opened and the water flow of the water injection passage is used for cleaning the impurities on the filter screen, but the water flow impact force in the horizontal direction is weak and the flushing effect is general, the one-way valve can be opened on the basis, and the pressurizing pump is used to increase a horizontal direction pressurizing water flow to flush and discharge the impurities on the filter screen to the right, but the pressurizing water flow and the water flow of the water injection passage will interfere with each other and reduce the impact force in the horizontal direction of the pressurizing water flow, and the third is to close the stop valve and flush the filter screen by the pressurizing water flow, but the flow of the water injection passage is paused, and the cleaning mode can be selected according to the situation.

[0027] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the knowledge range of ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A wellhead filtration structure that facilitates installation, comprising: The utility model provides a filter cartridge (1), its characterized in be equipped with stop valve (2) in the upper and lower ends of the filter cartridge (1) symmetry, the right side control end of stop valve (2) is equipped with cut-off rotating wheel (3), the opposite side of stop valve (2) is communicated and fixed with upper well pipe (4) and lower well pipe (5) respectively, the inside center of filter cartridge (1) is erected with filter screen (6), the outside of filter screen (6) corresponds with the inside wall of filter cartridge (1) left and right direction inlaying butt joint and it is inclined to be erected from left to right downward, the left side of filter screen (6) is erected with flow guide pipe (7) and its right end is communicated and fixed with filter cartridge (1), the top left side of flow guide pipe (7) is communicated and fixed with check valve (8), the top center of check valve (8) is communicated and fixed with pressurizing pump (9), the top input end of pressurizing pump (9) is communicated and fixed with water inlet pipe (10), the right side of filter screen (6) is erected with blow-off pipe (11) and its left end is communicated and fixed with filter cartridge (1), the right end outside of blow-off pipe (11) is sealed and clamped with snap ring (12), the right side center of snap ring (12) is communicated and fixed with blow-off valve (13), the top control end of blow-off valve (13) is equipped with rotating disc (15), the right side center of filter screen (6) is fixedly connected with cross rod (16), the right end of cross rod (16) is fixedly connected with ring buckle (17), the bottom center of ring buckle (17) is fixedly connected with limiting insertion rod (18), the bottom end of limiting insertion rod (18) corresponds with the inside wall of blow-off pipe (11) and is slidably fitted with the inside wall.

2. A wellhead filtration structure for ease of installation according to claim 1, characterized in that, The flow guide pipe (7) and the blow-off pipe (11) are both oval in design, and the inner sides of both are provided with a plurality of horizontal flow guide grooves.

3. A wellhead filtration structure for ease of installation according to claim 1, wherein, The upper end of the water inlet pipe (10) is communicated and fixed with a water tank of a water distribution room.

4. The wellhead filtration structure of claim 1, wherein, The outer sides of the rotating disc (15) are both rounded, and a layer of anti-skid adhesive tape is covered on the corresponding rounded surfaces.

5. The wellhead filtration structure of claim 1, wherein, The right side output end of the blow-off valve (13) is communicated and fixed with an L-shaped sewage flushing pipe (14), and a recovery bucket is placed directly below the water outlet of the L-shaped sewage flushing pipe (14).

6. A wellhead filtration structure for ease of installation according to claim 1, wherein, The right end of the inclined pull rod (19) is fixedly connected with the cross rod (16).

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