Efficient desanding device for fracturing fluid

Abstract

The utility model discloses an efficient desanding device for fracturing fluid, which comprises a desanding tank, a plurality of buffer baffles which are uniformly arranged at intervals along the length direction of the desanding tank are fixed on the upper inner wall and the lower inner wall in the desanding tank, and a sand collecting tank is arranged at the bottom of an inner cavity of the desanding tank and positioned in front of the buffer baffles. A sand discharging pipe arranged in the length direction of the sand removing tank is arranged below the sand removing tank, a plurality of branch pipes communicated with the interior of the sand discharging pipe are arranged at the top end of the sand discharging pipe, an electric control valve is fixed to each branch pipe, the top ends of the branch pipes are communicated with the corresponding sand collecting grooves, and a plurality of fixing rods arranged in the front-back direction of the sand removing tank are fixed into the sand removing tank. The fixing rods and the buffering baffles are arranged in a one-to-one correspondence mode, the fixing rods are located in front of the buffering baffles, a plurality of evenly-distributed flexible rubber strips are fixed to the peripheries of the fixing rods, a fracturing fluid inlet communicated with the interior of the desanding tank is formed in one end of the desanding tank, and a fracturing fluid outlet communicated with the interior of the desanding tank is formed in the other opposite end of the desanding tank. And a filter plate is arranged at the fracturing fluid outlet. The sand removal device can realize reliable sand removal.

Description

TECHNICAL FIELD

[0001] The utility model relates to fracturing fluid recovery technical field, especially in kind of fracturing fluid high -efficient sand removal device. BACKGROUND

[0002] With the increase of horizontal wells in recent years, the transformation scale is increased, and the liquid volume of oil well fracturing and the flowback liquid volume after pressure increase sharply, which causes huge water resource consumption and substantial increase of waste liquid treatment cost, and the traditional non-recyclable fracturing fluid makes the problem more prominent. With the deepening of national environmental protection policy and the increasing efforts of oilfield environmental protection department, new challenges are brought to downhole operation. The traditional fracturing working fluid of oil testing well discharge mode has not been adapted to the environmental protection requirements of oilfield downhole operation, and at present, a filtering device needs to be used to remove sand from the fracturing fluid, but the current sand removal device has large filtering pressure and cannot reliably realize the filtering of large-flow flowback liquid. SUMMARY

[0003] The purpose of the present application is to provide a kind of fracturing fluid high -efficient sand removal device to solve the problems raised in the above background.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a kind of fracturing fluid high -efficient sand removal device, including sand removal tank, the inside upper and lower inner wall of the sand removal tank is fixedly installed with a plurality of buffering baffle that is evenly spaced along the length direction of sand removal tank, the inner chamber bottom of the sand removal tank is located in the front of the buffering baffle and is provided with sand collection groove, the lower portion of the sand removal tank is provided with sand discharge pipe along its length direction, the top end of the sand discharge pipe is provided with a plurality of branch pipes communicated with its interior, each of the branch pipes is fixedly installed with electric control valve, the top end of the branch pipe is communicated with the corresponding sand collection groove, the inside of the sand removal tank is fixedly installed with a plurality of fixed rods along its front and back direction, the fixed rod is correspondingly arranged with the buffering baffle, the fixed rod is located in the front of the buffering baffle, a plurality of evenly distributed flexible rubber strips are fixedly installed on the outer periphery of the fixed rod, one end of the sand removal tank is provided with fracturing fluid inlet communicated with its interior, the opposite end of the sand removal tank is provided with fracturing fluid outlet communicated with its interior, the fracturing fluid outlet is provided with filter plate.

[0005] Preferably, one end of the sand removal tank is fixedly installed with vibration motor, the output end of the vibration motor is fixedly connected with fixed mesh plate located inside the sand removal tank, and the filter plate is connected with the fixed mesh plate.

[0006] Preferably, the filter plate and the fixed mesh plate are detachably connected, and the front of the sand removal tank located in the filter plate is provided with an openable maintenance window.

[0007] Preferably, the sand discharge pipe is fixedly installed with suction pump.

[0008] Preferably, the buffer baffle is arranged to be inclined towards the fracturing fluid inlet.

[0009] In conclusion, the technical effects and advantages of the utility model are as follows:

[0010] In the utility model, the fracturing flowback fluid enters into the sand removal tank through the fracturing fluid inlet, and each buffer baffle can block the heavy sand, and the sand contacts the flexible rubber strip on the fixed rod in the flowing process of the fracturing flowback fluid, so that the sand is blocked to fall into the sand collecting groove, multi-stage blocking is realized, the flowback fluid is filtered at the filter plate and discharged from the fracturing fluid outlet, the electric control valve is opened to make the sand enter into the sand discharge pipe from the branch pipe to be flushed out, the sand removal efficiency is improved, and the sand removal of the large flow flowback fluid is realized. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0012] Fig. 1 It is a sectional view of the fracturing fluid efficient sand removal device in the embodiments of the present application.

[0013] Fig. 2 It is an external structure schematic view of the fracturing fluid efficient sand removal device in the embodiments of the present application.

[0014] In the figure: 1, sand removal tank; 2, buffer baffle; 3, sand collecting groove; 4, sand discharge pipe; 5, branch pipe; 6, electric control valve; 7, flexible rubber strip; 8, fracturing fluid inlet; 9, fracturing fluid outlet; 10, filter plate; 11, vibration motor; 12, maintenance window; 13, suction pump; 14, fixed rod. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0016] In the description of the present disclosure, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0017] It also needs to be explained that the standard parts used in the present application can be purchased from the market, and can be ordered according to the description and drawings. Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances, and unless explicitly limited, the mechanical, parts and equipment can use the conventional model in the prior art.

[0018] In this paper, the term "including" is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. Without more limitations, the elements defined by the statement "including" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0019] Embodiment: Reference Figs. 1-2The illustrated high-efficiency sand removal device for fracturing fluid includes a sand removal tank 1, a plurality of buffer baffles 2 are fixedly installed on the upper and lower inner walls of the sand removal tank 1 and are uniformly spaced along the length direction of the sand removal tank 1, a sand collecting groove 3 is arranged at the front of the buffer baffles 2 in the bottom of the inner cavity of the sand removal tank 1, a sand discharge pipe 4 is arranged along the length direction of the sand removal tank 1 below the sand removal tank 1, a plurality of branch pipes 5 are arranged at the top end of the sand discharge pipe 4 and are in communication with the inside of the sand discharge pipe 4, an electric control valve 6 is fixedly installed on each of the branch pipes 5, the top end of the branch pipe 5 is in communication with the corresponding sand collecting groove 3, a plurality of fixed rods 14 are fixedly installed in the sand removal tank 1 along the front-to-back direction of the sand removal tank 1, the fixed rods 14 are arranged one-to-one corresponding to the buffer baffles 2, the fixed rods 14 are located in front of the buffer baffles 2, a plurality of flexible rubber strips 7 are fixedly installed on the outer periphery of the fixed rods 14 and are uniformly distributed, a fracturing fluid inlet 8 is arranged at one end of the sand removal tank 1 and is in communication with the inside of the sand removal tank 1, a fracturing fluid outlet 9 is arranged at the opposite end of the sand removal tank 1 and is in communication with the inside of the sand removal tank 1, a filter plate 10 is arranged at the fracturing fluid outlet 9, fracturing flowback fluid enters the inside of the sand removal tank through the fracturing fluid inlet, each buffer baffle blocks the heavier sand, and the sand contacts the flexible rubber strips on the fixed rods during the flow process of the fracturing flowback fluid, so that the sand is blocked and falls to the sand collecting groove, multi-stage blocking is realized, the flowback fluid is finally filtered at the filter plate and discharged from the fracturing fluid outlet, the electric control valve is opened to make the sand enter the sand discharge pipe from the branch pipe and be flushed out, the sand removal efficiency is improved, and sand removal for large-flow flowback fluid is realized.

[0020] By the above structure: a vibration motor 11 is fixedly installed at one end of the sand removal tank 1, the output end of the vibration motor 11 is fixedly connected to a fixed mesh plate located inside the sand removal tank 1, the filter plate 10 is connected to the fixed mesh plate.

[0021] By the above structure: the filter plate 10 and the fixed mesh plate are detachably connected, an openable maintenance window 12 is arranged in front of the filter plate 10 of the sand removal tank 1, so that the filter plate can be easily detached by opening the maintenance window.

[0022] By the above structure: a suction pump 13 is fixedly installed on the sand discharge pipe 4 to facilitate sand discharge.

[0023] By the above structure: the buffer baffles 2 are arranged to be inclined towards the fracturing fluid inlet 8.

[0024] It should be pointed out finally: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A high-efficiency sand removal device for fracturing fluid, comprising a sand removal tank (1), characterized in that: The inside of the sand removal tank (1) is fixedly installed with a plurality of buffer baffles (2) which are uniformly and spacedly arranged along the length direction of the sand removal tank (1), the bottom of the inner cavity of the sand removal tank (1) is provided with a sand collecting groove (3) in front of the buffer baffles (2), the lower portion of the sand removal tank (1) is provided with a sand discharge pipe (4) arranged along the length direction thereof, the top end of the sand discharge pipe (4) is provided with a plurality of branch pipes (5) in communication with the inside thereof, each of the branch pipes (5) is fixedly installed with an electric control valve (6), the top end of the branch pipe (5) is in communication with the corresponding sand collecting groove (3), the inside of the sand removal tank (1) is fixedly installed with a plurality of fixed rods (14) arranged along the front and back directions thereof, the fixed rods (14) are correspondingly arranged with the buffer baffles (2), the fixed rods (14) are located in front of the buffer baffles (2), the outer periphery of the fixed rods (14) is fixedly installed with a plurality of uniformly distributed flexible rubber strips (7), one end of the sand removal tank (1) is provided with a fracturing fluid inlet (8) in communication with the inside thereof, the opposite end of the sand removal tank (1) is provided with a fracturing fluid outlet (9) in communication with the inside thereof, the fracturing fluid outlet (9) is provided with a filter plate (10).

2. The high-efficiency sand removal device for fracturing fluid of claim 1, wherein: One end of the sand removal tank (1) is fixedly installed with a vibration motor (11), the output end of the vibration motor (11) is fixedly connected with a fixed mesh plate located inside the sand removal tank (1), the filter plate (10) is connected with the fixed mesh plate.

3. The high-efficiency sand removal device for fracturing fluid of claim 1, wherein: The filter plate (10) and the fixed mesh plate are detachably connected, the sand removal tank (1) located in front of the filter plate (10) is provided with an openable inspection window (12).

4. The high-efficiency sand removal device for fracturing fluid of claim 1, wherein: The sand discharge pipe (4) is fixedly installed with a suction pump (13).

5. The high-efficiency sand removal device for fracturing fluid of claim 1, wherein: The buffer baffles (2) are obliquely arranged towards the fracturing fluid inlet (8).

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