Flowback fracturing fluid treatment device for natural gas well

Abstract

The utility model provides a flowback fracturing fluid treatment device for a natural gas well, which comprises a treatment bin and a precipitation bin, a sealing mechanism and a mixing mechanism are respectively arranged on the outer side of the treatment bin, a conveying mechanism is arranged on one side of the precipitation bin, a cleaning mechanism is arranged on the top of the precipitation bin, and a sealing mechanism is arranged on the outer side of the precipitation bin. The top of the treatment bin communicates with a feeding pipe, an inner cavity of the treatment bin is provided with a first filtering plate, a second filtering plate and a limiting plate, one side of the precipitation bin communicates with a liquid discharging pipe, the bottom of the precipitation bin communicates with a waste discharging pipe, the sealing mechanism comprises a sealing plate, and the sealing plate is located on one side of the treatment bin. The flowback fracturing fluid treatment device for the natural gas well solves the problems that a front filter plate and a rear filter plate in an existing device are inconvenient to replace, and after the front filter plate and the rear filter plate are used for a long time, too many surface attachments can affect the filtering effect.

Description

Technical Field

[0001] This utility model relates to the field of recycling equipment technology, and in particular to a natural gas well flowback fracturing fluid treatment device. Background Technology

[0002] Fracturing fluid is the liquid used in the extraction of fluid minerals (gas, steam, oil, fresh water, brine, hot water, etc.) to achieve high production through hydraulic fracturing. The performance requirements for fracturing fluid include: high viscosity, good lubricity, low filtration loss, low friction, no clogging or damage to the fractured fluid layer, no pollution to the fluid mineral, good thermal and shear stability, low residue, good compatibility, rapid gel breaking, wide availability, ease of preparation, and economic efficiency. Typically, fracturing fluid is returned to the surface through downhole tubing after the operation; this liquid is considered wastewater and not reused, increasing the cost of hydraulic fracturing and negatively impacting environmental protection.

[0003] Patent document CN206554908U discloses a "natural gas well flowback fracturing fluid treatment device", which involves using a pre-filter plate to remove harmful gases and coarse particulate impurities from waste fracturing fluid, using a stirring drum and other mechanisms to remove heavy metal ion impurities from waste fracturing fluid, and using a post-filter plate to remove flocculants and micro-ions from waste fracturing fluid, thus turning waste fracturing fluid into a valuable resource for reuse.

[0004] While the device achieves the purpose of removing impurities from fracturing fluid through mechanisms such as a pre-filter plate, a stirring cylinder, and a post-filter plate, it is inconvenient to replace the internal pre-filter plate and post-filter plate. After long-term use, excessive deposits on the surface of the pre-filter plate and post-filter plate will affect the filtration effect. Therefore, it is necessary to provide a natural gas well flowback fracturing fluid treatment device that is easy to maintain in the later stage to solve the above technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a natural gas well flowback fracturing fluid treatment device that is easy to maintain in the later stage.

[0006] The natural gas well flowback fracturing fluid treatment device provided by this utility model includes a treatment chamber and a sedimentation chamber. A sealing mechanism and a mixing mechanism are respectively provided on the outside of the treatment chamber. A conveying mechanism is provided on one side of the sedimentation chamber. A cleaning mechanism is provided on the top of the sedimentation chamber. A feed pipe is connected to the top of the treatment chamber. A first filter plate, a second filter plate, and a limiting plate are respectively provided in the inner cavity of the treatment chamber. A drain pipe is connected to one side of the sedimentation chamber. A waste discharge pipe is connected to the bottom of the sedimentation chamber.

[0007] As a natural gas well flowback fracturing fluid treatment device provided by this utility model, preferably, the sealing mechanism includes a sealing plate, the sealing plate is located on one side of the treatment chamber, a sealing ring is fixedly connected to the outer side of the sealing plate, a fixing plate is fixedly connected to one side of the sealing plate, a fixing bolt is provided in the inner cavity of the fixing plate, a fixing seat is threadedly connected to the outer side of the fixing bolt, and one side of the fixing seat is fixedly connected to one side of the treatment chamber.

[0008] As a natural gas well flowback fracturing fluid treatment device provided by this utility model, preferably, the mixing mechanism includes a first motor, the first motor is installed on one side of the treatment chamber, the output shaft of the first motor is fixedly connected to a mixing rod, and the inner wall of the treatment chamber is fixedly connected to a partition.

[0009] As a natural gas well flowback fracturing fluid treatment device provided by this utility model, preferably, the conveying mechanism includes a conveying pump, which is installed on one side of the sedimentation tank. The inlet of the conveying pump is connected to one side of the treatment tank through an inlet pipe, and the outlet of the conveying pump is connected to one side of the sedimentation tank through an outlet pipe.

[0010] As a natural gas well flowback fracturing fluid treatment device provided by this utility model, preferably, the cleaning mechanism includes a second motor, which is installed on the top of the sedimentation tank. The output shaft of the second motor is fixedly connected to a rotating rod, and a connecting rod is fixedly connected to the outside of the rotating rod. A cleaning brush is fixedly connected to one end of the connecting rod.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This natural gas well flowback fracturing fluid treatment device allows for easy removal of the first and second filter plates during disassembly. The fixing bolt can be rotated to move it out of the fixing seat, and then the sealing plate can be pulled outwards to remove the sealing plate embedded on one side of the treatment chamber. This facilitates the replacement of the first and second filter plates by the user, solving the problem of inconvenient replacement of the internal pre- and post-filter plates in current devices, and the issue that excessive surface deposits on the pre- and post-filter plates after prolonged use can affect the filtration effect. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the natural gas well flowback fracturing fluid treatment device provided by this utility model;

[0014] Figure 2 This is a cross-sectional view of the processing chamber of this utility model;

[0015] Figure 3 This is a partial side sectional view of the processing chamber of this utility model;

[0016] Figure 4 This is a cross-sectional view of the sedimentation tank of this utility model.

[0017] The diagram is labeled as follows: 1. Processing chamber; 2. Sedimentation chamber; 3. Sealing mechanism; 301. Sealing plate; 302. Fixing plate; 303. Fixing bolt; 304. Fixing seat; 305. Sealing ring; 4. Mixing mechanism; 401. First motor; 402. Mixing rod; 403. Partition plate; 5. Conveying mechanism; 501. Conveying pump; 502. Inlet pipe; 503. Outlet pipe; 6. Cleaning mechanism; 601. Second motor; 602. Rotating rod; 603. Connecting rod; 604. Cleaning brush; 7. Feed pipe; 8. First filter plate; 9. Second filter plate; 10. Limiting plate; 11. Drain pipe; 12. Waste pipe. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in Figure 1 A schematic diagram of a preferred embodiment of the natural gas well flowback fracturing fluid treatment device provided by this utility model; Figure 2 This is a cross-sectional view of the processing chamber of this utility model; Figure 3 This is a partial side sectional view of the processing chamber of this utility model; Figure 4 This is a cross-sectional view of the sedimentation chamber of this utility model. A natural gas well flowback fracturing fluid treatment device includes a treatment chamber 1 and a sedimentation chamber 2. A sealing mechanism 3 and a mixing mechanism 4 are respectively provided on the outer side of the treatment chamber 1. A conveying mechanism 5 is provided on one side of the sedimentation chamber 2. A cleaning mechanism 6 is provided on the top of the sedimentation chamber 2. A feed pipe 7 is connected to the top of the treatment chamber 1. A first filter plate 8, a second filter plate 9 and a limiting plate 10 are respectively provided in the inner cavity of the treatment chamber 1. A drain pipe 11 is connected to one side of the sedimentation chamber 2. A waste discharge pipe 12 is connected to the bottom of the sedimentation chamber 2.

[0020] In this embodiment: an injection tube is connected to one side of the treatment chamber 1, through which the user can inject thickener, pH adjuster and ionic reactant into the treatment chamber 1. A pH meter is also installed on one side of the treatment chamber 1, and the detection head of the pH meter is inserted into the inner cavity of the treatment chamber 1. The aperture of the first filter plate 8 is larger than that of the second filter plate 9, and both are made of metal.

[0021] As a technical optimization of this utility model, the sealing mechanism 3 includes a sealing plate 301, which is located on one side of the processing chamber 1. A sealing ring 305 is fixedly connected to the outer side of the sealing plate 301, and a fixing plate 302 is fixedly connected to one side of the sealing plate 301. A fixing bolt 303 is provided in the inner cavity of the fixing plate 302, and a fixing seat 304 is threadedly connected to the outer side of the fixing bolt 303. One side of the fixing seat 304 is fixedly connected to one side of the processing chamber 1.

[0022] In this embodiment, a limiting plate 10 is also fixedly connected to one side of the sealing plate 301. When disassembling the first filter plate 8 and the second filter plate 9, the fixing bolt 303 can be rotated to move the fixing bolt 303 out of the fixing seat 304. Then the sealing plate 301 can be pulled outward to remove the sealing plate 301 embedded on one side of the processing chamber 1. Then the first filter plate 8 and the second filter plate 9 can be taken out of the processing chamber 1, which is convenient for the user to replace the first filter plate 8 and the second filter plate 9.

[0023] As a technical optimization of this utility model, the mixing mechanism 4 includes a first motor 401, which is installed on one side of the processing chamber 1. The output shaft of the first motor 401 is fixedly connected to a mixing rod 402, and a partition 403 is fixedly connected to the inner wall of the processing chamber 1.

[0024] In this embodiment: After the waste fracturing fluid is filtered through the first filter plate 8, it can fall above the partition plate 403. At this time, the user can inject thickener, pH adjuster and ionic reactant into the processing chamber 1 through the injection pipe on one side of the processing chamber 1. Then, the mixing rod 402 is driven by the first motor 401 to mix the waste fracturing fluid with the reagents so that the pH value of the waste fracturing fluid is in a neutral state.

[0025] As a technical optimization of this utility model, the conveying mechanism 5 includes a conveying pump 501, which is installed on one side of the sedimentation tank 2. The inlet of the conveying pump 501 is connected to one side of the treatment tank 1 through the inlet pipe 502, and the outlet of the conveying pump 501 is connected to one side of the sedimentation tank 2 through the outlet pipe 503.

[0026] In this embodiment: the waste fracturing fluid in the treatment chamber 1 can be transported to the sedimentation chamber 2 by the transfer pump 501.

[0027] As a technical optimization of this utility model, the cleaning mechanism 6 includes a second motor 601, which is installed on the top of the sedimentation tank 2. The output shaft of the second motor 601 is fixedly connected to a rotating rod 602, and a connecting rod 603 is fixedly connected to the outside of the rotating rod 602. A cleaning brush 604 is fixedly connected to one end of the connecting rod 603.

[0028] In this embodiment: After the waste fracturing fluid enters the sedimentation chamber 2, the user can gradually add flocculants and bactericides into the sedimentation chamber 2 through the pipe at the top of the sedimentation chamber 2. After the waste fracturing fluid in the sedimentation chamber 2 has settled, it can be discharged through the drain pipe 11. The lower half of the sedimentation chamber 2 has a conical structure, which can better collect the settled impurities. The impurities can be discharged through the waste discharge pipe 12. For the sedimented impurities remaining on the inner wall of the sedimentation chamber 2, the user can first inject clean water into the sedimentation chamber 2, and then drive the rotating rod 602 to rotate through the second motor 601. The rotating rod 602 drives the connecting rod 603 to move, thereby driving the cleaning brush 604 to move and clean the inner wall of the sedimentation chamber 2. The sedimented wastewater generated during cleaning can be discharged through the waste discharge pipe 12.

[0029] The working principle of the natural gas well flowback fracturing fluid treatment device provided by this utility model is as follows:

[0030] When using this device, waste fracturing fluid is transported into the treatment chamber 1 through the feed pipe 7. Then, it passes through the first filter plate 8 to filter out large suspended solids and particulate matter. After filtration, the waste fracturing fluid falls above the partition plate 403. At this point, the user can inject thickener, pH adjuster, and ionic reactant into the treatment chamber 1 through the injection pipe on one side. Then, the first motor 401 drives the mixing rod 402 to mix the waste fracturing fluid with the reagents, bringing the pH value of the waste fracturing fluid to a neutral state. Finally, the solenoid valve at the bottom of the partition plate 403... The mixture of waste fracturing fluid and gas is opened and transported to the second filter plate 9. The second filter plate 9 filters out small suspended solids and particulate matter in the waste fracturing fluid. Then, it is transported to the sedimentation tank 2 by the transfer pump 501. After the waste fracturing fluid enters the sedimentation tank 2, the user can gradually add flocculants and bactericides into the sedimentation tank 2 through the pipe at the top of the sedimentation tank 2. After the waste fracturing fluid in the sedimentation tank 2 has settled, it can be discharged through the drain pipe 11. The lower half of the sedimentation tank 2 has a conical structure, which can better collect the settled impurities. The impurities can be discharged through the waste discharge pipe 12.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A natural gas well flowback fracturing fluid treatment device, characterized in that, The system includes a processing chamber (1) and a sedimentation chamber (2). The outer side of the processing chamber (1) is provided with a sealing mechanism (3) and a mixing mechanism (4). The sedimentation chamber (2) is provided with a conveying mechanism (5) on one side. The top of the sedimentation chamber (2) is provided with a cleaning mechanism (6). The top of the processing chamber (1) is connected to a feed pipe (7). The inner cavity of the processing chamber (1) is provided with a first filter plate (8), a second filter plate (9), and a limiting plate (10). The sedimentation chamber (2) is connected to a drain pipe (11) on one side. The bottom of the sedimentation chamber (2) is connected to a waste discharge pipe (12).

2. The natural gas well flowback fracturing fluid treatment device according to claim 1, characterized in that, The sealing mechanism (3) includes a sealing plate (301), which is located on one side of the processing chamber (1). A sealing ring (305) is fixedly connected to the outer side of the sealing plate (301). A fixing plate (302) is fixedly connected to one side of the sealing plate (301). A fixing bolt (303) is provided in the inner cavity of the fixing plate (302). A fixing seat (304) is threadedly connected to the outer side of the fixing bolt (303). One side of the fixing seat (304) is fixedly connected to one side of the processing chamber (1).

3. The natural gas well flowback fracturing fluid treatment device according to claim 1, characterized in that, The mixing mechanism (4) includes a first motor (401), which is installed on one side of the processing chamber (1). The output shaft of the first motor (401) is fixedly connected to a mixing rod (402), and a partition (403) is fixedly connected to the inner wall of the processing chamber (1).

4. The natural gas well flowback fracturing fluid treatment device according to claim 1, characterized in that, The conveying mechanism (5) includes a conveying pump (501), which is installed on one side of the sedimentation tank (2). The inlet of the conveying pump (501) is connected to one side of the treatment tank (1) through an inlet pipe (502), and the outlet of the conveying pump (501) is connected to one side of the sedimentation tank (2) through an outlet pipe (503).

5. The natural gas well flowback fracturing fluid treatment device according to claim 1, characterized in that, The cleaning mechanism (6) includes a second motor (601), which is mounted on the top of the sedimentation tank (2). The output shaft of the second motor (601) is fixedly connected to a rotating rod (602), and a connecting rod (603) is fixedly connected to the outside of the rotating rod (602). A cleaning brush (604) is fixedly connected to one end of the connecting rod (603).

Images