Shale oil fracturing flow-back fluid treatment device

Abstract

The utility model discloses a shale oil fracturing flow-back fluid treatment device, which relates to the technical field of petroleum engineering and comprises a sedimentation tank, a heat exchanger and a chemical reagent reaction tank, one side of the sedimentation tank is connected with the heat exchanger through a conveying pipeline, and one side of the heat exchanger far away from the sedimentation tank is connected with the chemical reagent reaction tank through a communicating pipe. A heat exchanger is arranged in the settling pond, a scraping plate is arranged at the bottom of the settling pond, a filter screen plate is arranged in the settling pond, and a cleaning assembly is arranged on one side, far away from the heat exchanger, of the filter screen plate. The brush on the side face can sweep fine particles, the telescopic piece can drive the mounting plate to move, cleaning operation is more flexible and comprehensive, impurities cleaned down can be conveniently collected through the object collecting basket, and dirt from the filter screen plate can be accurately received through an object inlet of the object collecting basket.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of petroleum engineering, specifically is a shale oil fracturing flow -back fluid treatment device. BACKGROUND

[0002] With the large -scale application of shale oil exploitation technology, the treatment of shale oil fracturing flow -back fluid has become a serious challenge faced by the petroleum industry field, a large amount of flow -back fluid is produced in the shale oil fracting process, and these flow -back fluid compositions are complex, contain solid impurities such as silt, rock debris, and harmful substances such as heavy metal ions, organic pollutants, if not effectively treated and directly discharged, it can cause serious pollution to the surrounding environment, including soil pollution, water pollution and air pollution, destroy the ecological balance, and affect the health and quality of life of the surrounding residents;

[0003] The applicant found that a shale oil fracturing flow -back fluid back -mixing treatment device has been disclosed in Chinese patent, and the publication (announcement) number is "CN219117308U", the patent mainly through the design is reasonable, the heat exchanger can adjust the temperature of the flow -back fluid to enable the flow -back fluid to react at the appropriate temperature;

[0004] But the device can remove part of solid particles, but due to the lack of effective cleaning and collecting device, the sediment part is easy to be blocked, resulting in low processing efficiency, frequent shutdown for cleaning and maintenance, increase the operation cost and time cost, for this purpose, we put forward a shale oil fracturing flow -back fluid treatment device. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a shale oil fracturing flow -back fluid treatment device.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a shale oil fracturing flow -back fluid treatment device, including the sedimentation tank, heat exchanger and chemical reagent reaction tank, the sedimentation tank one side is connected with heat exchanger through the conveying pipeline, the heat exchanger is connected with chemical reagent reaction tank through the communication pipe far from the sedimentation tank side, the sedimentation tank is installed with filter screen plate in the inside, the filter screen plate is provided with cleaning assembly far from the heat exchanger side, the cleaning assembly includes mounting plate and two groups of telescopic parts, the mounting plate bottom is provided with the scraper, the mounting plate is provided with the brush close to the filter screen plate side, two groups telescopic parts are arranged on the both sides of mounting plate top surface respectively, the filter screen plate upper part is provided with the material basket close to the heat exchanger side, the material basket is equipped with the inlet close to the filter screen plate side.

[0007] As a further scheme of the utility model: the surface of the material basket is provided with the switch door, and the top surface of the switch door is provided with the handle on both sides.

[0008] As a further scheme of the utility model: the chemical reagent reaction pool is internally provided with an auxiliary mechanism, the auxiliary mechanism includes an auxiliary round pipe, a stirring assembly and a medicine feeding assembly, the stirring assembly is internally installed in the auxiliary round pipe, the medicine feeding assembly is fixedly connected on the upper side of the auxiliary round pipe through a feeding pipe, and the communicating pipe is fixedly connected on one side below the medicine feeding assembly of the auxiliary round pipe.

[0009] As a further scheme of the utility model: the chemical reagent reaction pool is connected with a filter pool through a connecting pipe away from the heat exchanger, the filter pool is internally provided with a screw-mounted frame, and a permeation membrane is installed in the frame.

[0010] As a further scheme of the utility model: support plates are arranged on the front and back sides of the filter pool, and a pressurizing mechanism is arranged on the top surface of the support plate.

[0011] As a further scheme of the utility model: an exhaust assembly is arranged on the front side of the upper portion of the chemical reagent reaction pool, the exhaust assembly includes an exhaust fan, an exhaust pipe and a gas collecting tank, the exhaust fan is installed in the exhaust pipe, one end of the exhaust pipe is connected to one side of the chemical reagent reaction pool, and the other end of the exhaust pipe is fixedly connected with the gas collecting tank.

[0012] As a further scheme of the utility model: an exhaust port is formed on one side of the filter pool.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、The utility model discloses a filter screen plate is installed in the sedimentation tank, and one side is provided with a cleaning assembly, the scraper of the mounting plate bottom can scrape the sediment of the larger particle on the filter screen plate surface, the side brush can clean the small particle, and the telescopic piece can drive the mounting plate to move, so that the cleaning operation is more flexible and comprehensive, the existence of the collection basket is convenient for collecting the impurities cleaned down, the inlet can accurately receive the dirt from the filter screen plate, and the switch door on the surface is convenient for cleaning the impurities in the collection basket, guaranteeing the continuous and stable operation of the sedimentation tank, providing more pure liquid basis for the subsequent treatment process, reducing the working pressure and maintenance cost of the subsequent treatment unit.

[0015] 2、The utility model discloses that the auxiliary mechanism is installed in the chemical reagent reaction pool, the auxiliary round pipe provides specific space for the reaction, the stirring assembly in the inside can make the flowback fluid and the chemical reagent mix fully, guarantees that the chemical reaction is uniformly and efficiently carried out, the medicine feeding assembly controls the adding amount and adding time of the chemical reagent, the exhaust assembly can discharge the gas generated in the reaction process in time, avoids the gas from accumulating in the reaction pool and affecting the reaction process or causing the security hidden danger, so that the chemical reagent reaction pool can more effectively carry out the depth treatment to the flowback fluid, and the treatment capacity and purification quality of the whole device to the shale oil fracturing flowback fluid are improved.

[0016] Other advantages, objects, and features of the present application will be understood or apparent to those skilled in the art from the following description of the application, which provides merely examples of embodiments of the present application, and will be apparent from the practice of the application. Therefore, the present application is not intended to be limited to the embodiments described herein which are given by way of example only. It is also within the abilities of those skilled in the art to carry out the application in other embodiments, and modifications, improvements and variations of the application will be apparent to those skilled in the art upon reading this description. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Figure 1 is a perspective view of the device according to an embodiment of the present application;

[0018] Figure 2 Figure 2 is a perspective view of the cleaning assembly according to an embodiment of the present application;

[0019] Figure 3 Figure 3 is a front view of the cleaning assembly according to an embodiment of the present application;

[0020] Figure 4 Figure 4 is a partial front view of the device according to an embodiment of the present application;

[0021] Figure 5 Figure 5 is a partial cross-sectional view of the device according to an embodiment of the present application.

[0022] In the drawings: 1, sedimentation tank; 2, heat exchanger; 3, chemical reagent reaction tank; 4, conveying pipeline; 5, communication pipe; 6, filter screen; 7, cleaning assembly; 71, mounting plate; 711, scraper; 712, brush; 72, telescopic member; 8, collection basket; 81, inlet; 9, switch door; 10, auxiliary mechanism; 101, auxiliary pipe; 102, stirring assembly; 103, medicine feeding assembly; 11, connecting pipe; 12, filter tank; 13, permeable membrane; 14, support plate; 15, pressurizing mechanism; 16, exhaust assembly. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be further described below with reference to the drawings, and it should be noted that the description of these embodiments is intended to help understand the present application, but does not constitute a limitation of the present application.

[0024] In addition, the technical features involved in each of the embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0025] Reference will now be made to the drawings, and specific embodiments will be illustrated in the context thereof. Figure 1 - the drawings Figure 5The utility model discloses a shale oil fracturing flow -back fluid processing device, and one side of sedimentation tank 1 is connected with heat exchanger 2 through the conveying pipeline 4, and one side of heat exchanger 2 is connected with chemical reagent reaction pool 3 through the communication pipe 5, and the inside installation of sedimentation tank 1 has filter screen plate 6, and the far side of filter screen plate 6 is provided with cleaning assembly 7, and cleaning assembly 7 includes mounting plate 71 and two groups of telescopic parts 72, and the bottom of mounting plate 71 is provided with scraper 711, and the side close to filter screen plate 6 of mounting plate 71 is provided with brush 712, and two groups of telescopic parts 72 are arranged on the top surface of mounting plate 71 respectively, and telescopic part 72 controls the movement of mounting plate 71, and the upper side close to heat exchanger 2 of filter screen plate 6 is provided with collection basket 8, and the side close to filter screen plate 6 of collection basket 8 is provided with inlet 81, when cleaning operation is carried out, the impurities that are scraped down by scraper 711 and cleaned by brush 712 can be transported to inlet 81 along with mounting plate 71, and then smoothly enter collection basket 8 through inlet 81, thereby realizing the centralized collection and storage of impurities.

[0026] In example one, the surface of the collection basket 8 is provided with a switch door 9, the top surface of the switch door 9 is provided with a handle, the inside of the chemical reagent reaction pool 3 is provided with an auxiliary mechanism 10, the auxiliary mechanism 10 includes an auxiliary circular pipe 101, a stirring assembly 102, and a medicine feeding assembly 103, the stirring assembly 102 is installed inside the auxiliary circular pipe 101, the medicine feeding assembly 103 is fixedly connected to the upper side of the auxiliary circular pipe 101 through a feeding pipe, and the communication pipe 5 is fixedly connected to one side of the auxiliary circular pipe 101 below the medicine feeding assembly 103.

[0027] Specifically, the switch door 9 and the handle of the collection basket 8 are convenient to operate and facilitate the cleaning of the impurities in the collection basket 8, the stirring assembly 102 includes stirring blades, a rotating shaft, and a motor, the rotating shaft is driven by the motor, and the stirring blades are driven by the rotating shaft, which can generate strong turbulent flow during rotation, so that the flow-back fluid entering the auxiliary circular pipe 101 and the chemical reagent accurately injected from the medicine feeding assembly 103 through the feeding pipe are fully and quickly mixed.

[0028] In example two, the chemical reagent reaction pool 3 is connected with a filter pool 12 through a connecting pipe 11 away from the heat exchanger 2, the filter pool 12 is provided with a screw-mounted frame inside, the frame is installed with a permeable membrane 13, the filter pool 12 is provided with a support plate 14 on the front and back sides, the support plate 14 is provided with a pressurizing mechanism 15 on the top surface, the chemical reagent reaction pool 3 is provided with an exhaust assembly 16 on the upper front side, the exhaust assembly 16 includes an exhaust fan, an exhaust pipe, and a gas collection tank, the exhaust fan is installed inside the exhaust pipe, one end of the exhaust pipe is connected to one side of the chemical reagent reaction pool 3, the other end of the exhaust pipe is fixedly connected with the gas collection tank, and an outlet is formed on one side of the filter pool 12.

[0029] Specifically, the pressing mechanism 15 includes a hydraulic piston rod, a cross rod, pressure rods integrally formed at both ends of the cross rod, and a moving plate located above the filter tank 12 and at the left end of the permeable membrane 13 that allows water to pass through. Under the drive of the hydraulic piston rod, the flowback fluid can pass through the permeable membrane 13 more quickly and efficiently, greatly improving the speed and efficiency of filtration and reducing the processing time. When chemical reagents react in the reaction tank, various gases are generated, and the exhaust fan can be started in time to generate strong suction power to extract the generated gases in the reaction tank through the exhaust pipe.

[0030] Working principle:

[0031] The shale oil fracturing flowback fluid first enters the sedimentation tank 1. In the sedimentation tank 1, the filter screen 6 plays a preliminary filtering role to intercept solid impurities in the flowback fluid. The cleaning assembly 7 is then started, and the mounting plate 71 moves under the drive of the telescopic member 72. The bottom scraper 711 of the mounting plate 71 is in contact with the surface of the filter screen 6 to scrape off large particles of sediment. The side brush 712 sweeps away small particles of impurities to maintain good filtering performance of the filter screen 6. The cleaned impurities enter the collection basket 8 through the inlet 81 of the collection basket 8. When the collection basket 8 needs to be cleaned, the impurities can be easily removed through the switch door 9.

[0032] After being treated by the sedimentation tank 1 and the heat exchanger 2, the flowback fluid enters the auxiliary pipe 101 of the chemical reagent reaction tank 3 through the communication pipe 5. The reagent feeding assembly 103 accurately adds chemical reagents into the auxiliary pipe 101 according to the preset program or real-time monitoring data through the feeding pipe. At the same time, the stirring assembly 102 rotates at high speed in the auxiliary pipe 101 to mix the flowback fluid and the chemical reagents sufficiently, promote the chemical reaction to proceed uniformly and efficiently, and remove harmful substances in the flowback fluid. The gases generated during the reaction are sucked by the exhaust fan in the exhaust assembly 16, extracted from the reaction tank through the exhaust pipe, and collected in the gas collection tank to avoid the accumulation of gases affecting the reaction process or causing safety problems.

[0033] The above front, back, left, right, up, and down are based on the drawings in the specification Figure 1 as the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0034] In the description of the utility model, need understanding is, the orientation or position relation that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a particular orientation, is constructed and operated in a particular orientation, therefore can not be understood as a limitation on the protection scope of the utility model.

[0035] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the described embodiments.

[0036] For those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A shale oil fracturing flowback fluid treatment device, comprising a sedimentation tank (1), a heat exchanger (2) and a chemical reagent reaction tank (3), one side of the sedimentation tank (1) is connected with the heat exchanger (2) through a conveying pipeline (4), the heat exchanger (2) far away from one side of the sedimentation tank (1) is connected with the chemical reagent reaction tank (3) through a communication pipe (5), characterized in that: The filter screen plate (6) is internally arranged in the sedimentation tank (1), and a cleaning assembly (7) is arranged on the side, away from the heat exchanger (2), of the filter screen plate (6); the cleaning assembly (7) comprises a mounting plate (71) and two groups of telescopic members (72); the bottom of the mounting plate (71) is provided with a scraper (711); the side, close to the filter screen plate (6), of the mounting plate (71) is provided with a brush (712); the two groups of telescopic members (72) are respectively arranged on the top surface of the mounting plate (71) on both sides; a collecting basket (8) is arranged on the upper portion of the filter screen plate (6) and close to the side of the heat exchanger (2); and the side, close to the filter screen plate (6), of the collecting basket (8) is provided with an inlet (81).

2. The shale oil fracturing flow-back fluid treatment device according to claim 1, characterized in that: A switch door (9) is arranged on the surface of the collecting basket (8); and handles are arranged on the top surface of the switch door (9) on both sides.

3. The shale oil fracturing flow-back fluid treatment device according to claim 1, characterized in that: An auxiliary mechanism (10) is arranged in the chemical reagent reaction tank (3); the auxiliary mechanism (10) comprises an auxiliary circular tube (101), a stirring assembly (102) and a medicine feeding assembly (103); the stirring assembly (102) is internally arranged in the auxiliary circular tube (101); the medicine feeding assembly (103) is fixedly connected to the upper side of the auxiliary circular tube (101) through a feeding pipe; and the communication pipe (5) is fixedly connected to the side, below the medicine feeding assembly (103), of the auxiliary circular tube (101).

4. The shale oil fracturing flow-back fluid treatment device according to claim 1, characterized in that: The chemical reagent reaction tank (3) is connected with a filter tank (12) through a connecting pipe (11) on the side, away from the heat exchanger (2); the filter tank (12) is internally provided with a screw-mounted frame; and a permeation membrane (13) is arranged in the frame.

5. The shale oil fracturing flow-back fluid treatment device according to claim 4, characterized in that: Support plates (14) are arranged on the front and back sides of the filter tank (12); and a pressurizing mechanism (15) is arranged on the top surface of the support plate (14).

6. The shale oil fracturing flow-back fluid treatment device according to claim 1, characterized in that: An exhaust assembly (16) is arranged on the upper front side of the chemical reagent reaction tank (3); the exhaust assembly (16) comprises an exhaust fan, an exhaust pipe and a gas collecting tank; the exhaust fan is arranged in the exhaust pipe; one end of the exhaust pipe is connected to the side of the chemical reagent reaction tank (3); and the other end of the exhaust pipe is fixedly connected to the gas collecting tank.

7. The shale oil fracturing flow-back fluid treatment device according to claim 5, characterized in that: An exhaust outlet is formed in one side of the filter tank (12).

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