Processing device for air suspension proppant

Abstract

The embodiment of the utility model provides a processing device for an air suspension proppant. The processing device comprises a buffer tank, a slurry pump, a spiral mixer, a dewatering screen and a drying assembly, the buffer tank is used for storing slurry formed by mixing proppant raw materials and suspension modification liquid, an outlet of the buffer tank is communicated with an inlet of the slurry pump, and an outlet of the slurry pump is communicated with an inlet of the spiral mixer; a liquid outlet of the spiral mixer is communicated with an inlet of the buffer tank, a discharge port of the spiral mixer is communicated with an inlet of the dewatering screen, a liquid outlet of the dewatering screen is communicated with an inlet of the buffer tank, and a discharge port of the dewatering screen is connected with a receiving end of the drying assembly; the output end of the drying assembly is used for outputting the air suspension proppant. According to the processing device for the air suspension proppant, the production and processing process is environmentally friendly and simple, the agent can be recycled, and the cost is reduced.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of proppant processing, and particularly relate to a processing device for air-suspended proppant. Background Art

[0002] Currently, unconventional oil and gas, the primary exploration and development area, has low permeability and is primarily used for fracturing using slickwater systems. However, slickwater has a weak sand-holding capacity, which makes proppant prone to sedimentation. During fracturing, increasing pump flow is often used to improve proppant placement in the fractures. However, this can lead to excessive pump pressure, resulting in ineffective proppant support in the fractures.

[0003] To address the problem of rapid proppant settling, researchers have developed air-suspended proppants by modifying their surfaces to enable them to adsorb gas. This adsorption reduces the bulk density of the proppant particles, allowing them to float in the fracturing fluid and be easily carried. This allows for better positioning within the fractures, significantly increasing post-fracture oil and gas well production. However, currently, limited equipment exists for the production and processing of air-suspended proppants, necessitating the development of a universal air-suspended proppant processing device. Utility Model Content

[0004] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a processing device for air-suspended proppants.

[0005] An embodiment of the present disclosure provides a processing device for air-suspended proppant, the processing device comprising a buffer tank, a slurry pump, a screw mixer, a dewatering screen, and a drying assembly;

[0006] The buffer tank is used to store a slurry formed by mixing the proppant raw material and the suspension modifying liquid. The outlet of the buffer tank is connected to the inlet of the slurry pump, and the outlet of the slurry pump is connected to the inlet of the spiral mixer.

[0007] The liquid outlet of the spiral mixer is connected to the inlet of the cache tank, the material outlet of the spiral mixer is connected to the inlet of the dewatering screen, the liquid outlet of the dewatering screen is connected to the inlet of the cache tank, the material outlet of the dewatering screen is connected to the receiving end of the drying component, and the output end of the drying component is used to output the air-suspended proppant.

[0008] Optionally, the liquid outlet of the spiral mixer is located at its lower end, the material outlet of the spiral mixer is located at its upper end, and the inlet of the spiral mixer is located between the liquid outlet and the material outlet.

[0009] Optionally, the inlet of the dewatering screen is located at the top thereof, the liquid outlet of the dewatering screen is located at the bottom thereof, and the material discharge port of the dewatering screen is located between the top and the bottom thereof.

[0010] Optionally, the drying assembly includes a conveying member and a heating support member;

[0011] The receiving end of the conveying member is used to receive the solid slurry discharged from the discharge port of the dewatering screen. The conveying member is arranged on the heating support member to deliquid and dry the solid slurry to form the air-suspended proppant. The output end of the conveying member is used to output the air-suspended proppant to the finished product bin.

[0012] Optionally, the conveying member includes a first sub-conveyor member, and the first sub-conveyor member includes a liquid control section and a conveying section respectively located outside and inside the heating support member;

[0013] The receiving end of the liquid control section is used to receive the solid slurry discharged from the discharge port of the dewatering screen, the output end of the liquid control section is connected to the input end of the conveying section, and the output end of the conveying section is used to output the air-suspended proppant to the finished product bin; wherein,

[0014] The liquid control section is used to deliquore the solid slurry, and the conveying section is used to dry the solid slurry to form the air-suspended proppant.

[0015] Optionally, the processing device further comprises a reflux line;

[0016] The inlet of the reflux pipeline is used to receive the liquid removed from the liquid control section, and the outlet of the reflux pipeline is connected to the cache tank.

[0017] Optionally, the conveying member further includes a plurality of second sub-conveying members;

[0018] The plurality of second sub-conveyors are sequentially arranged along the top of the heating support member from the bottom, and the plurality of second sub-conveyors are all located inside the heating support member;

[0019] A plurality of the second sub-conveyors are connected end to end in sequence and are used to connect the output end of the conveying section and the finished product warehouse.

[0020] Optionally, the first sub-conveyor member and the second sub-conveyor member are both conveyor belts, and the heat source of the heating support member is hot air blown from the bottom to the top thereof.

[0021] Optionally, the belt surface of the conveyor belt is made of a metal mesh, and the pore size of the metal mesh is not larger than the particle size of the solid slurry.

[0022] Optionally, the processing device further includes a sand separator; the sand separator is arranged at the inlet of the buffer tank and is used to mix the proppant raw material and the suspension modification liquid.

[0023] The processing device for the air-suspended proppant of the embodiment of the present disclosure, through the provided buffer tank, slurry pump, spiral mixer, dewatering screen and drying component, makes the entire production and processing process of the air-suspended proppant environmentally friendly and simple, and can recycle the agent to reduce costs, and has universal applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a schematic diagram of the overall structure of a processing device for an air-suspended proppant according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] like Figure 1 As shown, a processing device 100 for air-suspended proppant is shown. The processing device 100 includes a buffer tank 110, a slurry pump 120, a spiral mixer 130, a dewatering screen 140, and a drying assembly 150. The buffer tank 110 is used to store a slurry formed by mixing proppant raw material and a suspension-modifying liquid. The outlet of the buffer tank 110 is connected to the inlet of the slurry pump 120, which in turn is connected to the inlet of the spiral mixer 130. The liquid outlet of the spiral mixer 130 is connected to the inlet of the buffer tank 110, and the material outlet of the spiral mixer 130 is connected to the inlet of the dewatering screen 140. The liquid outlet of the dewatering screen 140 is connected to the inlet of the buffer tank 110. The material outlet of the dewatering screen 140 is connected to the receiving end of the drying assembly 150. The output end of the drying assembly 150 is used to output the air-suspended proppant.

[0027] Specifically, if Figure 1 As shown, buffer tank 110 stores a slurry formed by mixing proppant raw material and suspension modifying liquid. The mixed slurry is pumped from buffer tank 110 to screw mixer 130 via slurry pump 120. Screw mixer 130 further stirs and mixes the mixed slurry, while liquid is discharged from the liquid outlet of screw mixer 130 into buffer tank 110 for liquid recovery. The mixed slurry is discharged from the outlet of screw mixer 130 into dewatering screen 140, where the liquid is further removed and discharged from the liquid outlet of dewatering screen 140 into buffer tank 110. The solid slurry obtained after screening by dewatering screen 140 is discharged to drying assembly 150, where the solid slurry is further dehydrated, deliquated, and dried to form air-suspended proppant, which is then output to a designated location.

[0028] The processing device for the air-suspended proppant of the embodiment of the present disclosure, through the provided buffer tank, slurry pump, spiral mixer, dewatering screen and drying component, makes the entire production and processing process of the air-suspended proppant environmentally friendly and simple, and can recycle the agent to reduce costs, and has universal applicability.

[0029] It should be noted that the processing device 100 further includes a sand separator (not marked in the figure). The sand separator is provided at the inlet of the buffer tank 110 and is used to mix the proppant raw material and the suspension modification liquid. Figure 1 As shown, the recovered liquid discharged from the liquid outlets of the spiral mixer 130 and the dewatering screen 140 enters the sand separator, which is also connected to the conveyor belt 300. The proppant raw material is conveyed to the buffer tank 110 containing the suspension-modifying liquid via the conveyor belt 300 at a set speed. The sand separator is then used to disperse the proppant raw material and the suspension-modifying liquid, allowing them to be fully mixed to form a mixed solution. The sand separator can be configured as a conical structure to facilitate the dispersion of the mixed proppant raw material and suspension-modifying liquid.

[0030] For example, Figure 1 As shown, the liquid outlet of the spiral mixer 130 is located at its lower end, the material outlet of the spiral mixer 130 is located at its upper end, and the inlet of the spiral mixer 130 is located between the liquid outlet and the material outlet. Furthermore, the inlet of the dewatering screen 140 is located at its top, the liquid outlet of the dewatering screen 140 is located at its bottom, and the material outlet of the dewatering screen 140 is located between its top and bottom.

[0031] For example, Figure 1 As shown, the drying assembly 150 includes a conveying member 151 and a heating support member 152. The receiving end of the conveying member 151 is used to receive the solid slurry discharged from the discharge port of the dewatering screen 140. The conveying member 151 is arranged on the heating support member 152 to deliquate and dry the solid slurry to form the air-suspended proppant. The output end of the conveying member 151 is used to output the air-suspended proppant to the finished product bin 200.

[0032] Specifically, if Figure 1 As shown, the receiving end of the conveying member 151 provided on the heating support member 152 receives the solid slurry discharged from the discharge port of the dewatering screen 140. During the conveying process of the conveying member 151, the solid slurry is dehydrated, deliquated and dried with the cooperation of the heating support member 152, and finally forms an air-suspended proppant, which is output from the output end of the conveying member 151 to the finished product bin 200.

[0033] The processing device for air-suspended proppants of the embodiment of the present disclosure can reduce the loss of effective components on the surface of proppant particles due to wear through the provided conveying member and heating support member, thereby ensuring the suspension performance of the proppant.

[0034] Furthermore, the conveying member 151 includes a first sub-conveyor 1511, which includes a liquid control section 15111 and a conveying section 15112, respectively located outside and inside the heating support member 152. The receiving end of the liquid control section 15111 is used to receive the solid slurry discharged from the discharge port of the dewatering screen 140. The output end of the liquid control section 15111 is connected to the input end of the conveying section 15112. The output end of the conveying section 15112 is used to output the air-suspended proppant to the finished product bin 200. The liquid control section 15111 is used to deliquify the solid slurry, and the conveying section 15112 is used to dry the solid slurry to form the air-suspended proppant.

[0035] Specifically, if Figure 1 As shown, the receiving end of the liquid control section 15111 receives the solid slurry discharged from the discharge port of the dewatering screen 140. The liquid content of the solid slurry can be reduced in the liquid control section 15111, and the solid slurry continues to be dehydrated. This can reduce the energy consumption when the subsequent heating support member 152 cooperates with the conveying section 15112 to dry the solid slurry. The output end of the liquid control section 15111 discharges the solid slurry to the conveying section 15112. During the transmission process of the conveying section 15112, the solid slurry is dehydrated and dried by the heating support member 152 to form an air-suspended proppant, and the air-suspended proppant is finally transported to the finished product bin 200.

[0036] For example, Figure 1 As shown, the processing device 100 further includes a reflux pipeline 160 . The inlet of the reflux pipeline 160 is used to receive the liquid removed by the liquid control section 15111 , and the outlet of the reflux pipeline 160 is connected to the buffer tank 110 .

[0037] Specifically, if Figure 1 As shown, the liquid removed from the liquid control section 15111 can be further recovered through the reflux line 160. The recovered liquid removed from the liquid control section 15111 can be recovered to the cache tank 110 by the reflux line 160 for recycling and reuse, thereby reducing liquid waste. The multi-stage recovery setting can reduce costs and is also conducive to environmentally friendly production and processing. It is not difficult to understand that the cache tank 110 does not rely solely on the mixing of the recovered liquid and the proppant raw material, but also needs to be regularly supplemented with concentrated suspension modification liquid (liquid supplement).

[0038] The processing device for the air-suspended proppant of the embodiment of the present disclosure can not only reduce costs by providing multi-stage liquid recovery, but also facilitates environmentally friendly processing and production. The overall production and processing process of the device is simple and convenient, and has good universality.

[0039] For example, Figure 1 As shown, the conveyor member 151 further includes a plurality of second sub-conveyors 1512. The plurality of second sub-conveyors 1512 are arranged sequentially along the top of the heating support member 152 from the bottom, and the plurality of second sub-conveyors 1512 are all located within the heating support member 152. The plurality of second sub-conveyors 1512 are sequentially connected end to end and are used to connect the output end of the conveyor section 15112 and the finished product warehouse 200.

[0040] As a specific example, Figure 1 As shown, two second sub-conveyors 1512 are provided, both located below the conveying section 15112 and arranged side by side. The input end of one second sub-conveyor 1512 is connected to the output end of the conveying section 15112, and the output end of the second sub-conveyor 1512 is connected to the input end of the other second sub-conveyor 1512, while the output end of the other second sub-conveyor 1512 is connected to the finished product bin 200. The solid slurry passes through the conveying section 15112 and the two second sub-conveyors 1512 in sequence, and is then dehydrated and dried to form air-suspended proppant. Specifically, the solid slurry is dehydrated and dried during the transport process between the conveying section 15112 and the two second sub-conveyors 1512, thereby forming air-suspended proppant.

[0041] Furthermore, both the first sub-conveyor member 1511 and the second sub-conveyor member 1512 are conveyor belts, and the heat source of the heating support member 152 is hot air blown from its bottom to its top. It should be noted that the heat ventilation portion of the heating support member 152 can be relatively enclosed to further reduce energy consumption. Furthermore, an opening can be provided at the top of the heating support member 152 to discharge exhaust gases generated by heating.

[0042] In the air-suspended proppant processing apparatus of the disclosed embodiments, solid slurry is transported via a conveyor belt, dehydrated and dried by a heated support member, and then, after undergoing three stages of drying, enters a finished product bin, ultimately producing air-suspended proppant. The drying assembly further effectively reduces the loss of active ingredients on the surface of the air-suspended proppant particles due to wear, ultimately ensuring the air-suspended proppant's suspension performance.

[0043] Exemplarily, the conveyor belt surface is made of a wire mesh, and the mesh aperture is no larger than the particle size of the solid slurry. Specifically, the conveyor belt 151 can be made of a wire mesh, and the mesh aperture can be adjusted according to the particle size of the solid slurry to accommodate solid slurries of varying particle sizes. Furthermore, the mesh aperture must always be no larger than the particle size of the solid slurry.

[0044] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A processing device for air-suspended proppant, characterized in that: The processing device includes a buffer tank, a slurry pump, a spiral mixer, a dewatering screen and a drying component; The buffer tank is used to store a slurry formed by mixing the proppant raw material and the suspension modifying liquid. The outlet of the buffer tank is connected to the inlet of the slurry pump, and the outlet of the slurry pump is connected to the inlet of the spiral mixer. The liquid outlet of the spiral mixer is connected to the inlet of the cache tank, the material outlet of the spiral mixer is connected to the inlet of the dewatering screen, the liquid outlet of the dewatering screen is connected to the inlet of the cache tank, the material outlet of the dewatering screen is connected to the receiving end of the drying component, and the output end of the drying component is used to output the air-suspended proppant.

2. The processing device for air-suspended proppant according to claim 1, characterized in that: The liquid outlet of the spiral mixer is located at the lower end thereof, the material discharge port of the spiral mixer is located at the upper end thereof, and the inlet of the spiral mixer is located between the liquid outlet and the material discharge port.

3. The processing device for air-suspended proppants according to claim 2, characterized in that: The inlet of the dewatering screen is located at the top thereof, the liquid outlet of the dewatering screen is located at the bottom thereof, and the material discharge port of the dewatering screen is located between the top and the bottom thereof.

4. The processing device for air-suspended proppants according to any one of claims 1 to 3, characterized in that: The drying assembly includes a conveying member and a heating support member; The receiving end of the conveying member is used to receive the solid slurry discharged from the discharge port of the dewatering screen. The conveying member is arranged on the heating support member to deliquid and dry the solid slurry to form the air-suspended proppant. The output end of the conveying member is used to output the air-suspended proppant to the finished product bin.

5. The processing device for air-suspended proppants according to claim 4, characterized in that: The conveying member includes a first sub-conveying member, and the first sub-conveying member includes a liquid control section and a conveying section respectively located outside and inside the heating support member; The receiving end of the liquid control section is used to receive the solid slurry discharged from the discharge port of the dewatering screen, the output end of the liquid control section is connected to the input end of the conveying section, and the output end of the conveying section is used to output the air-suspended proppant to the finished product bin; wherein, The liquid control section is used to deliquore the solid slurry, and the conveying section is used to dry the solid slurry to form the air-suspended proppant.

6. The processing device for air-suspended proppants according to claim 5, characterized in that: The processing device also includes a return line; The inlet of the reflux pipeline is used to receive the liquid removed from the liquid control section, and the outlet of the reflux pipeline is connected to the cache tank.

7. The processing device for air-suspended proppants according to claim 5, characterized in that: The conveying member further includes a plurality of second sub-conveying members; The plurality of second sub-conveyors are sequentially arranged along the top of the heating support member from the bottom, and the plurality of second sub-conveyors are all located inside the heating support member; A plurality of the second sub-conveyors are connected end to end in sequence and are used to connect the output end of the conveying section and the finished product warehouse.

8. The processing device for air-suspended proppants according to claim 7, characterized in that: The first sub-conveyor member and the second sub-conveyor member are both conveyor belts, and the heat source of the heating support member is hot air blown from the bottom to the top.

9. The processing device for air-suspended proppants according to claim 8, characterized in that: The belt surface of the conveyor belt is made of metal mesh, and the pore size of the metal mesh is not larger than the particle size of the solid slurry.

10. The processing device for air-suspended proppants according to any one of claims 1 to 3, characterized in that: The processing device further comprises a sand separator; the sand separator is arranged at the inlet of the buffer tank and is used for mixing the proppant raw material and the suspension modification liquid.

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