Solid-liquid separation device for oil field fracturing flow-back fluid

Abstract

The utility model discloses an oil field fracturing flow-back fluid solid-liquid separation device, and particularly relates to the technical field of solid-liquid separation devices, the oil field fracturing flow-back fluid solid-liquid separation device comprises a tank body, and a functional assembly used for carrying out solid-liquid separation on oil field fracturing flow-back fluid is arranged in the tank body; the functional assembly comprises a filter cone which is arranged in the tank body and has a conical section, a filter ring is mounted at the bottom end of the filter cone, and a fixed bracket with a T-shaped section is arranged at the bottom of the filter ring. According to the solid-liquid separation device, solid-liquid separation treatment is carried out on the flowback liquid through the filter cone with the conical section, solid materials in the flowback liquid are filtered on the surfaces of the filter cone and the filter ring, then the servo motor drives the fixing column on the fixing support to drive the filter cone and the filter ring to rotate, and therefore the filter ring can drive the fixed materials to make contact with the guide plate; the solid materials are guided to the discharging plate to be discharged through the guide plate, so that the effect of cleaning the filter cone and the filter ring in real time is achieved, and the condition that the filter cone and the filter ring are blocked due to accumulation of the solid materials is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid separation devices, and more specifically to a solid-liquid separation device for oilfield fracturing flowback fluid. Background Art

[0002] Oil fields are naturally occurring hydrocarbons underground, which are liquid under surface conditions. On the contrary, if they are still gas under surface conditions, they are natural gas. The specific area of ​​natural gas production is a natural gas field. The size of recoverable oil reserves determines the value of mining, which requires accurate calculation of the size of the oil-bearing area, the number and thickness of oil layers, and the oil reserves per unit area. As the water content of crude oil in oil fields increases year by year, the amount of associated oil field produced water also continues to increase. Among them, oil field fracturing return fluid is wastewater containing chemicals and solid particles produced after the use of fracturing technology in the oil and gas extraction process.

[0003] For environmental protection and resource conservation, solid-liquid separation is required for oilfield fracturing flowback fluid. As shown in the prior art publication No. CN219209146U, although this prior art uses filter plates to separate oilfield fracturing flowback fluid, the filter plates in this prior art cannot be cleaned in real time, resulting in the accumulation of solid material on the filter plate surface. This accumulation of solid material can affect the separation performance of the filter plates and even cause them to become clogged, making separation impossible. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides an oilfield fracturing return fluid solid-liquid separation device, which performs solid-liquid separation on the return fluid through a filter bucket with a conical cross-section, and then drives the fixed column on the fixed bracket to drive the filter bucket and filter ring to rotate through a servo motor, thereby allowing the filter ring to drive the fixed material to contact the guide plate, and the solid material is drained to the discharge plate for discharge by means of the guide plate, thereby achieving the effect of real-time cleaning of the filter bucket and filter ring, so as to solve the problems arising from the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an oilfield fracturing flowback fluid solid-liquid separation device, comprising a tank body, wherein the tank body is provided with a functional component for performing solid-liquid separation on the oilfield fracturing flowback fluid;

[0006] The functional component includes a filter hopper provided inside the tank body and having a conical cross-section, a filter ring being installed at the bottom end of the filter hopper, a fixing bracket with a T-shaped cross-section being provided at the bottom end of the filter ring, the bottom end of the fixing bracket being movably connected to the bottom end of the tank body cavity via a bearing, fixing columns being installed at the top ends of both ends of the fixing bracket, the top ends of the fixing columns being fixed to the bottom end of the filter hopper, a guide hopper with a funnel-shaped cross-section being provided on the outside of the top end of the filter hopper, the top end of the guide hopper being fixed to the top end of the tank body cavity;

[0007] Among them, a material port is opened on one side of the bottom end of the tank body, and a discharge plate for discharging solid materials is installed inside the material port. A guide plate is provided on the top of the end of the filter ring close to the material port, and the end of the guide plate close to the material port is fixed together with the discharge plate.

[0008] In a preferred embodiment, a stirring shaft is provided inside the guide bucket, the bottom end of the stirring shaft is fixed to the top end of the filter bucket, and two stirring blades are installed on both sides of the top end of the stirring shaft;

[0009] Both sides of the bottom end of the stirring shaft are equipped with material-moving rods.

[0010] In a preferred embodiment, the cross section of the material-moving rod is set to be L-shaped, and the end of the material-moving rod away from the stirring shaft extends to the inside of the end of the guide bucket close to the filter bucket.

[0011] In a preferred embodiment, the top of the tank body is fixedly connected to a feed pipe, the feed pipe and the guide bucket are positioned correspondingly up and down, and the bottom of the tank body is fixedly connected to a discharge pipe.

[0012] In a preferred embodiment, a servo motor is provided on one side of the discharge pipe, the servo motor is installed at the bottom of the tank body, and the output shaft of the servo motor passes through the tank body and is fixed to the bottom end of the fixing bracket.

[0013] In a preferred embodiment, the bottom of the tank body is provided with a plurality of pillars distributed at intervals, and the top ends of the pillars are fixed to the bottom of the tank body.

[0014] Technical effects and advantages of this utility model:

[0015] 1. The flowback liquid is subjected to solid-liquid separation through a filter hopper with a conical cross-section. The solid materials in the flowback liquid are filtered on the surface of the filter hopper and filter ring. The servo motor then drives the fixed column on the fixed bracket to drive the filter hopper and filter ring to rotate. This allows the filter ring to drive the fixed materials to contact the guide plate, and the solid materials are then drained to the discharge plate by the guide plate. This achieves the effect of real-time cleaning of the filter hopper and filter ring, and avoids the accumulation of solid materials causing blockage of the filter hopper and filter ring.

[0016] 2. Through the connection between the stirring shaft and the filter bucket, the filter bucket can drive the stirring blades and the material rod on the stirring shaft to rotate together, so that the stirring blades and the material rod can stir the return liquid between the guide bucket and the filter bucket to prevent the return liquid from accumulating and causing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the tank body of the present utility model;

[0019] Figure 3 For the utility model Figure 2 Enlarged view of part A;

[0020] Figure 4 This is a bottom view of the filter bucket of the present utility model;

[0021] Figure 5 This is the front view of the stirring shaft of the present utility model.

[0022] The accompanying drawings are marked as follows: 1. tank body; 2. filter bucket; 3. filter ring; 4. fixed bracket; 5. fixed column; 6. guide bucket; 7. material port; 8. discharge plate; 9. guide plate; 10. stirring shaft; 11. stirring blade; 12. material pusher rod; 13. feed pipe; 14. discharge pipe; 15. servo motor; 16. support. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Refer to the instruction manual Figure 1-5 The utility model provides an oilfield fracturing flowback fluid solid-liquid separation device, comprising a tank body 1, a plurality of spaced-apart pillars 16 are provided at the bottom of the tank body 1, and the top ends of the pillars 16 are fixed to the bottom of the tank body 1. The tank body 1 is supported and fixed by the plurality of pillars 16, thereby ensuring the stability of the tank body 1. The tank body 1 is provided with a functional component for solid-liquid separation of the oilfield fracturing flowback fluid;

[0025] like Figure 2-5As shown, the functional component includes a filter bucket 2 which is arranged inside the tank body 1 and has a conical cross-section, a filter ring 3 is installed at the bottom of the filter bucket 2, and a fixing bracket 4 with a T-shaped cross-section is provided at the bottom of the filter ring 3. The bottom end of the fixing bracket 4 is movably connected to the bottom of the inner cavity of the tank body 1 through a bearing, and fixing columns 5 are installed on the top of both ends of the fixing bracket 4. The top of the fixing column 5 is fixed to the bottom of the filter bucket 2, and the top of the filter bucket 2 is provided with a guide bucket 6 with a funnel-shaped cross-section on the outside, and the top of the guide bucket 6 is fixed to the top of the inner cavity of the tank body 1; wherein, a material port 7 is opened on one side of the bottom end of the tank body 1, and the material port A discharge plate 8 for discharging solid materials is installed inside 7, a guide plate 9 is provided on the top of one end of the filter ring 3 close to the material port 7, and the end of the guide plate 9 close to the material port 7 is fixed to the discharge plate 8, a servo motor 15 is provided on one side of the discharge pipe 14, the servo motor 15 is installed at the bottom of the tank body 1, and the output shaft of the servo motor 15 passes through the tank body 1 and is fixed to the bottom end of the fixed bracket 4, by the connection between the output shaft of the servo motor 15 and the fixed bracket 4, the servo motor 15 can drive the fixed bracket 4 to drive the filter bucket 2 and the filter ring 3 to rotate, so that the solid material can be discharged easily.

[0026] The staff transports the oilfield fracturing flowback fluid into the tank body 1 through the feed pipe 13 for separation treatment. The flowback fluid is guided by the guide bucket 6 and first contacts the filter bucket 2 with a conical cross-section. This can break up the flowback fluid and filter the solid materials in the flowback fluid on the surface of the filter bucket 2 and the filter ring 3. The filtered liquid flows to the bottom of the filter bucket 2, while the filtered solid materials fall onto the filter ring 3 along the inclined surface of the filter bucket 2.

[0027] At the same time, the servo motor 15 is started to drive the two fixed columns 5 on the fixed bracket 4 to rotate, and the fixed columns 5 simultaneously drive the filter bucket 2 and the filter ring 3 to rotate, thereby driving the filter ring 3 to drive the fixed material to contact the guide plate 9, and the guide plate 9 then drains the solid material to the discharge plate 8 for discharge, thereby achieving the effect of cleaning the filter bucket 2 and the filter ring 3 in real time, and avoiding the accumulation of solid materials causing blockage of the filter bucket 2 and the filter ring 3.

[0028] At the same time, in order to avoid accumulation and blockage between the guide bucket 6 and the filter bucket 2, as shown in Figures 2 and 5, a stirring shaft 10 is provided inside the guide bucket 6, and the bottom end of the stirring shaft 10 is fixed to the top of the filter bucket 2, and two stirring blades 11 distributed at intervals are installed on both sides of the top of the stirring shaft 10; a material diverter rod 12 is installed on both sides of the bottom end of the stirring shaft 10, and through the connection between the stirring shaft 10 and the filter bucket 2, the filter bucket 2 can drive the stirring blades 11 and the material diverter rod 12 on the stirring shaft 10 to rotate together, thereby allowing the stirring blades 11 and the material diverter rod 12 to stir the return liquid between the guide bucket 6 and the filter bucket 2 to prevent the return liquid from accumulating and causing blockage. Because the cross-section of the material diverter rod 12 is set to L-shaped, and the end of the material diverter rod 12 away from the stirring shaft 10 extends to the inside of the end of the guide bucket 6 close to the filter bucket 2, the bottom end of the material diverter rod 12 can extend to the bottom opening of the guide bucket 6, thereby more fully stirring the return liquid.

[0029] In order to facilitate the transport of the return liquid to the interior of the tank 1, and also to facilitate the discharge of the separated liquid, such as Figure 1 and 2 As shown, the top of the tank body 1 is fixedly connected to a feed pipe 13, and the position of the feed pipe 13 corresponds to the guide bucket 6 up and down. The bottom of the tank body 1 is fixedly connected to a discharge pipe 14, and the return liquid is transported to the inside of the tank body 1 through the feed pipe 13 for solid-liquid separation, and the discharge pipe 14 can discharge the separated liquid.

[0030] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oilfield fracturing flowback fluid solid-liquid separation device, comprising a tank body (1), characterized in that: The tank body (1) is provided with a functional component for performing solid-liquid separation on the oilfield fracturing flowback fluid; The functional component comprises a filter hopper (2) which is arranged inside the tank body (1) and has a conical cross section, a filter ring (3) is installed at the bottom end of the filter hopper (2), a fixing bracket (4) with a T-shaped cross section is provided at the bottom of the filter ring (3), the bottom end of the fixing bracket (4) is movably connected to the bottom of the inner cavity of the tank body (1) through a bearing, a fixing column (5) is installed at the top of both ends of the fixing bracket (4), the top end of the fixing column (5) is fixed to the bottom of the filter hopper (2), the top end of the filter hopper (2) is provided with a guide hopper (6) with a funnel-shaped cross section, and the top end of the guide hopper (6) is fixed to the top of the inner cavity of the tank body (1); A material port (7) is provided on one side of the bottom end of the tank body (1), a discharge plate (8) for discharging solid materials is installed inside the material port (7), a guide plate (9) is provided on the top of one end of the filter ring (3) close to the material port (7), and the end of the guide plate (9) close to the material port (7) is fixed to the discharge plate (8).

2. The oilfield fracturing flowback fluid solid-liquid separation device according to claim 1, characterized in that: A stirring shaft (10) is provided inside the guide bucket (6), the bottom end of the stirring shaft (10) is fixed to the top end of the filter bucket (2), and two stirring blades (11) are installed on both sides of the top end of the stirring shaft (10) at intervals; Material-moving rods (12) are installed on both sides of the bottom end of the stirring shaft (10).

3. The oilfield fracturing flowback fluid solid-liquid separation device according to claim 2, characterized in that: The cross section of the material-moving rod (12) is set to be L-shaped, and the end of the material-moving rod (12) away from the stirring shaft (10) extends to the inside of the end of the guide bucket (6) close to the filter bucket (2).

4. The oilfield fracturing flowback fluid solid-liquid separation device according to claim 1, characterized in that: The top of the tank body (1) is fixedly connected to a feed pipe (13), and the position of the feed pipe (13) corresponds to the position of the guide bucket (6) up and down. The bottom of the tank body (1) is fixedly connected to a discharge pipe (14).

5. The oilfield fracturing flowback fluid solid-liquid separation device according to claim 4, characterized in that: A servo motor (15) is provided on one side of the discharge pipe (14). The servo motor (15) is installed at the bottom of the tank body (1), and the output shaft of the servo motor (15) passes through the tank body (1) and is fixed to the bottom end of the fixing bracket (4).

6. The oilfield fracturing flowback fluid solid-liquid separation device according to claim 1, characterized in that: The bottom of the tank body (1) is provided with a plurality of pillars (16) distributed at intervals, and the top ends of the pillars (16) are fixed to the bottom of the tank body (1).

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