A multi-stage filtered fracturing manifold

Abstract

The utility model discloses a kind of fracturing manifold of multistage filtration, including fracturing manifold assembly, and fracturing manifold assembly is installed with multistage filtration structure and is used for multistage filtration, multistage filtration structure is communicated backwashing self-cleaning structure and is used for backwashing cleaning, the fracturing manifold assembly includes support frame, and support frame is installed with inlet pipe, and inlet pipe is communicated with shunt pipe, and shunt pipe is communicated with outlet pipe, and backwashing self-cleaning structure includes backflushing component, and backflushing component is communicated with dosing component, and backflushing component includes backflushing feed pipe, and backflushing feed pipe upside is communicated with backflushing feed pipe, and backflushing feed pipe downside is communicated with backflushing pipe, and dosing component includes dosing pipe, and dosing pipe is threadedly connected with sealing cover, and the fracturing manifold of this multistage filtration application can carry out filtration in multiple stages, and filter screen mesh size is adjusted according to needs, to slightly increase automatically when detecting fluid viscosity or impurities increase, to protect system from overload.

Description

Technical Field

[0001] This utility model relates to the field of fracturing manifold technology, specifically a multi-stage filtration fracturing manifold. Background Technology

[0002] Fracturing equipment is a set of tools used for surface control and fluid pumping in oil and gas well fracturing operations. It belongs to the category of surface control equipment above the wellhead and is mainly used in shale gas development and oil reservoir fracturing stimulation. Core components include fracturing manifolds, wax ball manifolds, well sealers, and ball droppers. The fracturing manifold connects the fracturing truck to the wellhead via high-pressure alloy steel pipes or forged tees, with a pressure resistance of 60-70 MPa. The wax ball manifold is used to inject wax balls into the well and consists of a container, control valve, and union. Existing fracturing manifolds are prone to clogging, have poor filtration effects, increase cleaning difficulty, and require regular disassembly and cleaning, affecting the overall use of the fracturing manifold. Utility Model Content

[0003] The purpose of this invention is to provide a multi-stage filtration fracturing manifold, including a fracturing manifold assembly, on which a multi-stage filtration structure is installed and used for multi-stage filtration. The multi-stage filtration structure is connected to a backwashing self-cleaning structure for backwashing cleaning. The fracturing manifold assembly includes a support frame, on which an inlet pipe is installed. The inlet pipe is connected to a branch pipe, and the branch pipe is connected to an outlet pipe. The backwash self-cleaning structure includes a backwash assembly, which is connected to a dosing assembly; The backflush assembly includes a backflush feed pipe, with the upper side of the backflush feed pipe connected to the backflush inlet pipe and the lower side of the backflush feed pipe connected to the backflush pipe. The dosing assembly includes a dosing tube with a threaded connection to a sealing cap.

[0004] Preferably, the multi-stage filtration structure includes a filter tube, a filter assembly installed inside the filter tube for fluid filtration, an auxiliary scraping assembly rotatably connected to the filter assembly for cleaning, an impurity discharge assembly connected to the lower side of the filter tube, and a filter bag provided on the right side of the impurity discharge assembly.

[0005] Preferably, the filter assembly includes a filter cover with a groove, a slide bar slidably connected in the groove, a first filter screen installed in the slide bar, the first filter screen being attached to a second filter screen, the second filter screen being installed inside the filter cover, a motor housing being installed on the second filter screen, a motor in the motor housing driving a rotating rod to rotate and causing the first filter screen to rotate, the first filter screen being installed on the rotating rod, and a fixing plate being installed on the rotating rod.

[0006] By adopting the above technical solution, impurities in the fracturing manifold are filtered out by setting up a filter assembly.

[0007] Preferably, the auxiliary scraping assembly includes a rotating block, a connecting plate mounted on the rotating block, and a cleaning plate mounted on the connecting plate.

[0008] By adopting the above technical solution, an auxiliary scraping component is set to assist in cleaning the surface of the first filter screen.

[0009] Preferably, the impurity discharge assembly includes a drain pipe, and a sealing cover is threadedly connected to the lower side of the drain pipe.

[0010] By adopting the above technical solution, impurities are discharged by setting up an impurity discharge component.

[0011] Compared with the prior art, the beneficial effects of this utility model are: this multi-stage filtration fracturing manifold, (1) This application can perform multi-stage filtration and adjust the mesh size of the filter screen as needed, so as to automatically increase the mesh size slightly when the fluid viscosity or impurities increase, thereby protecting the system from overload; (2) This application can perform backflushing self-cleaning treatment inside the fracturing manifold and add chemical treatment when needed, so that the whole disassembly and cleaning is not required, thus increasing its practicality. Attached Figure Description

[0012] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram showing the distribution of the backflushing self-cleaning structure of this utility model on a fracturing manifold assembly; Figure 3 This is a schematic diagram showing the distribution structure of the auxiliary scraping component on the filter component according to this utility model; Figure 4 This is a schematic diagram of the filter assembly structure of this utility model.

[0013] In the diagram: 1. Fracturing manifold assembly; 11. Support frame; 12. Inlet pipe; 13. Diverter pipe; 14. Outlet pipe; 2. Multi-stage filtration structure; 21. Filter pipe; 22. Filter assembly; 221. Filter cover; 222. Slide groove; 223. Slide bar; 224. First filter screen; 225. Motor box; 226. Rotating rod; 227. Fixing plate; 228. Second filter screen; 23. Auxiliary scraper assembly; 231. Rotating block; 232. Connecting plate; 233. Cleaning plate; 24. Impurity discharge assembly; 241. Drain pipe; 242. Sealing cover; 25. Filter bag; 3. Backwash self-cleaning structure; 31. Backwash assembly; 311. Backwash feed pipe; 312. Backwash feed pipe; 313. Backwash pipe; 32. Chemical dosing assembly; 321. Chemical dosing pipe; 322. Sealing cover. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a multi-stage filtration fracturing manifold. Figure 1 and Figure 2 As shown, the fracturing manifold assembly 1 includes a support frame 11, on which an inlet pipe 12 is installed. The inlet pipe 12 is connected to a branch pipe 13, and the branch pipe 13 is connected to an outlet pipe 14. Among them, the support frame 11 is provided in two sets, and the two sets of support frames 11 are arranged symmetrically; Specifically, a control device for controlling the overall equipment is installed on the support frame 11; In the above scheme, the fluid enters the diversion pipe 13 through the inlet pipe 12 on the diversion pipe 13, and after passing through the inlet pipe 12 and the diversion pipe 13 and being filtered through the multi-stage filtration structure 2, the fluid is discharged through the outlet pipe 14.

[0016] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a multi-stage filtration structure 2 is installed on the fracturing manifold assembly 1 for multi-stage filtration. The multi-stage filtration structure 2 includes a filter tube 21, in which a filter assembly 22 is installed for fluid filtration. An auxiliary scraper assembly 23 is rotatably connected to the filter assembly 22 for auxiliary cleaning. The lower side of the filter tube 21 is connected to an impurity discharge assembly 24. A filter bag 25 is provided on the right side of the impurity discharge assembly 24. The filter assembly 22 includes a filter cover 221, on which a groove 222 is provided. A sliding strip 223 is slidably connected in the groove 222. A first filter screen 224 is installed in the sliding strip 223. 4. The second filter screen 228 is attached to the filter cover 221. The second filter screen 228 is installed inside the filter cover 221. The motor box 225 is installed on the second filter screen 228. The motor in the motor box 225 drives the rotating rod 226 to rotate and drives the first filter screen 224 to rotate. The first filter screen 224 is installed on the rotating rod 226. The rotating rod 226 is equipped with a fixing plate 227. The auxiliary scraping assembly 23 includes a rotating block 231. The rotating block 231 is equipped with a connecting plate 232. The connecting plate 232 is equipped with a cleaning plate 233. The impurity discharge assembly 24 includes a sewage pipe 241. The lower side of the sewage pipe 241 is threaded with a sealing cover 242. The multi-stage filtration structure 2 is provided in three sets. The three sets of multi-stage filtration structures 2 are respectively installed at the front end, middle end and rear end of the diversion pipe 13. The mesh density in the three sets of multi-stage filtration structures 2 is different, and multi-stage filtration ensures filtration effect. Differential pressure, flow rate, and particulate matter sensors are installed before and after the filter assembly 22. The differential pressure, flow rate, and particulate matter sensors transmit the monitored data to the processor for processing. The processed data is then transmitted to the control device. The control device starts the motor in the motor housing 225 as needed, thereby adjusting the mesh density as required to prevent the mesh from being quickly blocked when large particles of impurities suddenly increase. In severe cases, the machine needs to be stopped for manual cleaning. The flow sensor model is DN40, the differential pressure sensor model is QBE64-DP4, and the particulate matter sensor model is HCB-LD-50 / 50. A small waterproof stepper motor is installed inside the motor housing 225. The small waterproof stepper motor is existing technology. Specifically, the first filter screen 224 and the second filter screen 228 have the same structure. The first filter screen 224 rotates with the assistance of a small waterproof stepper motor, thereby adjusting the mesh density of the first filter screen 224 and the second filter screen 228 and increasing practicality. Furthermore, a filter bag 25 is installed inside the liquid outlet pipe 14; Both ends of the impurity discharge assembly 24 are equipped with electric valves, which are installed in the diversion pipe 13 to facilitate subsequent backwashing. In the above scheme, the fluid enters the filter tube 21 and is filtered with the assistance of the first filter screen 224 and the second filter screen 228 in the filter cover 221. The filtered fluid enters the filter bag 25 in the outlet pipe 14 for further filtration to ensure the filtration effect. When the fluid flows into the filter tube 21, the water flow drives the connecting plate 232 on the rotating block 231 to rotate. The rotation of the connecting plate 232 drives the cleaning plate 233 to clean the surface of the first filter screen 224, thereby automatically cleaning the surface of the first filter screen 224. When it is necessary to adjust the mesh size of the first filter screen 224 and the second filter screen 228, the rotating rod 226 is driven to rotate with the assistance of the small waterproof stepper motor in the motor box 225 on the second filter screen 228. The rotation of the rotating rod 226 drives the slide strip 223 on the first filter screen 224 on the fixed plate 227 to make fine adjustments in the slide groove 222 on the filter cover 221, thereby avoiding a sudden increase of impurities, clogging of the mesh, excessive internal pressure, and unnecessary losses.

[0017] like Figure 1 and Figure 2As shown, the multi-stage filtration structure 2 is connected to the backwash self-cleaning structure 3 and is used for backwash cleaning. The backwash self-cleaning structure 3 includes a backwash assembly 31, which is connected to a dosing assembly 32. The backwash assembly 31 includes a backwash conveying pipe 311, which is connected to a backwash feed pipe 312 on its upper side and a backwash pipe 313 on its lower side. The dosing assembly 32 includes a dosing pipe 321, which is threadedly connected to a sealing cap 322. The rotating sewage pipe 241 has a sealing cover 242, which is separate from the sewage pipe 241. The sewage pipe 241 is connected to the sewage pipe through a hollow threaded connector, and an electric valve is installed inside the sewage pipe 241. In the above scheme, with the assistance of the control device, the electric valves in the diversion pipes 13 on both sides of the impurity discharge component 24 are closed and the electric valve in the drain pipe 241 is opened. The backwash liquid after external pressurization enters the backwash pipe 313 through the backwash feed pipe 312 and the backwash conveying pipe 311. The three sets of backwash pipes 313 backwash the filter component 22 in the filter pipe 21 respectively. The impurities after backwashing are discharged through the drain pipe 241. If chemical cleaning is required, with the assistance of the control device, the electric valve in the drain pipe 241 is closed, the sealing cover 322 is rotated, the sealing cover 322 is separated from the chemical dosing pipe 321, and the chemical solution is poured into the chemical dosing pipe 321 to soak the multi-stage filter structure 2 in the chemical solution. With the assistance of the control device, the electric valve in the drain pipe 241 is opened, and finally the cleaning discharge and rinsing are carried out, which improves the cleaning effect, reduces the number of subsequent maintenance, and increases practicality.

[0018] Working principle: When using this multi-stage filtration fracturing manifold, connect the external power supply, and the fracturing manifold will be filtered in multiple stages by the multi-stage filtration structure 2 on the fracturing manifold assembly 1. The multi-stage filtration structure 2 will be automatically cleaned by the backwash self-cleaning structure 3.

[0019] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage filtration fracturing manifold, comprising a fracturing manifold assembly (1), wherein a multi-stage filtration structure (2) is installed on the fracturing manifold assembly (1) and used for multi-stage filtration, the multi-stage filtration structure (2) being connected to a backwash self-cleaning structure (3) and used for backwash cleaning, characterized in that, The fracturing manifold assembly (1) includes a support frame (11), on which an inlet pipe (12) is installed. The inlet pipe (12) is connected to a branch pipe (13), and the branch pipe (13) is connected to an outlet pipe (14). The backwash self-cleaning structure (3) includes a backwash assembly (31), which is connected to a dosing assembly (32). The backflush assembly (31) includes a backflush feed pipe (311), the upper side of which is connected to a backflush feed pipe (312), and the lower side of which is connected to a backflush pipe (313). The dosing assembly (32) includes a dosing tube (321) with a threaded cap (322).

2. The multi-stage filtration fracturing manifold according to claim 1, characterized in that: The multi-stage filtration structure (2) includes a filter tube (21), a filter assembly (22) is installed inside the filter tube (21) and used for fluid filtration, an auxiliary scraping assembly (23) is rotatably connected to the filter assembly (22) and assists in cleaning, the lower side of the filter tube (21) is connected to the impurity discharge assembly (24), and a filter bag (25) is provided on the right side of the impurity discharge assembly (24).

3. The multi-stage filtration fracturing manifold according to claim 2, characterized in that: The filter assembly (22) includes a filter cover (221), a groove (222) is provided on the filter cover (221), a slide bar (223) is slidably connected in the groove (222), a first filter screen (224) is installed in the slide bar (223), the first filter screen (224) is attached to a second filter screen (228), the second filter screen (228) is installed in the filter cover (221), a motor box (225) is installed on the second filter screen (228), a motor in the motor box (225) drives the rotating rod (226) to rotate and drive the first filter screen (224) to rotate, the first filter screen (224) is installed on the rotating rod (226), and a fixing plate (227) is installed on the rotating rod (226).

4. The multi-stage filtration fracturing manifold according to claim 2, characterized in that: The auxiliary scraping assembly (23) includes a rotating block (231), a connecting plate (232) is mounted on the rotating block (231), and a cleaning plate (233) is mounted on the connecting plate (232).

5. A multi-stage filtration fracturing manifold according to claim 2, characterized in that: The impurity discharge assembly (24) includes a drain pipe (241), and a sealing cover (242) is threadedly connected to the lower side of the drain pipe (241).

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