Pipeline selector acting on flow-back fluid multi-path sampling device

Abstract

The utility model discloses a pipeline selector acting on a flowback fluid multi-path sampling device. The pipeline selector comprises a rack, a pipeline selector and a storage device connected with the pipeline selector through a pipeline, the pipeline selector is fixedly arranged on the rack; specifically, the pipeline selector comprises a driving motor and a selector, a plurality of evenly-distributed feeding connectors are arranged on the outer side of the selector at the top of the selector, the feeding connectors are communicated with the interior of the selector, a sampling connector is arranged at the bottom of the selector, and a mixed sampling connector is arranged on the outer side of the selector close to the sampling connector. According to the shale gas well flow-back fluid sampling device, multiple shale gas well flow-back fluids can be sampled through one device only by selecting the pipeline selector, multiple devices do not need to be adopted for collection, and the labor cost and the material cost are effectively reduced; meanwhile, the work of the device can be realized only through the cooperation of the driving motor, the multi-path adopting component and various pipelines, so that the device is more convenient to manage, operate and maintain.

Description

Technical Field

[0001] This utility model belongs to the technical field of shale gas well flowback fluid treatment equipment, specifically relating to a pipeline selector that acts on a multi-channel sampling device for flowback fluid. Background Technology

[0002] Shale gas well flowback fluid refers to the fluid injected underground to complete the fracturing process, after which the remaining material from the fracturing fluid is returned to the surface for treatment or reuse.

[0003] Therefore, sampling and analyzing the flowback fluid produced by shale gas wells is an important process for monitoring the properties of shale gas well flowback fluid. In the existing technology, the sampling equipment for shale gas well flowback fluid can only collect samples from a single flowback fluid pipeline. When it is necessary to sample and analyze the flowback fluid samples from multiple gas wells on a platform, sampling equipment needs to be installed on each flowback fluid pipeline, which is costly. Moreover, each sampling equipment needs to be operated and monitored separately, which is inconvenient for unified management and use.

[0004] Therefore, there is an urgent need for a device that can sample and collect backflow fluid from multiple gas wells. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pipeline selector for a multi-channel sampling device for backflow liquid.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A pipeline selector for use in a backflow liquid multi-channel sampling device includes a pipeline selector and pipelines connected to the pipeline selector;

[0008] The pipeline selector is fixedly mounted on the frame;

[0009] Specifically, the pipe selector includes:

[0010] The drive motor is fixed to the top of the selector by a bracket;

[0011] The selector is mounted on the frame via pipelines. The selector has a hollow shell structure. Several evenly distributed feed ports are provided on the outer side of the selector near the top of the selector. The feed ports are connected to the interior of the selector. A sampling port is provided at the bottom of the selector. A mixing sampling port is provided on the outer side of the selector near the sampling port. Both the sampling port and the mixing sampling port are connected to the interior of the selector. A flange is provided at the end of the feed port, sampling port and mixing sampling port away from the selector.

[0012] The selector is equipped with an inner core tube connector, which includes a rotating shaft, an inner tube, and a connector tube fixed to the inner tube near the rotating shaft. The rotating shaft is connected to the drive end of the drive motor, the top of the inner tube is fixedly connected to the rotating shaft, the bottom of the inner tube is snapped into the inner side of the sampling interface, and the connector tube and the feed interface are located on the same horizontal line.

[0013] In the above-mentioned device, a drive motor is used to rotate the inner core tube connector inside the selector, so that the connector tube in the inner core tube connector enters the sampling interface, thereby achieving selective and directional sampling of the shale gas well flowback fluid.

[0014] Furthermore, several return fluid pipelines are fixedly installed on the frame. Valves are installed on the pipeline bodies. One end of the return fluid pipeline is connected to the feed port of the selector through a flange, and the other end away from the feed port of the selector is equipped with a flange. The valves are used to control the opening and closing of the pipelines, and the flanges facilitate connection with external shale gas well return fluid pipelines to enable sampling of shale gas well return fluid.

[0015] Furthermore, a sampling outlet pipeline is fixedly installed on the frame, and a valve is provided at the position of the sampling outlet pipeline. One end of the sampling outlet pipeline is connected to the sampling interface of the selector through a flange, and the other end away from the sampling interface of the selector is provided with a flange.

[0016] Furthermore, the mixed sampling interface is connected to the mixed sampling outlet via a mixed sampling pipeline. The mixed sampling outlet is equipped with a flange. The mixed sampling pipeline is provided with a branch pipeline that is connected to the sampling outlet pipeline. The branch pipeline is equipped with a valve.

[0017] Furthermore, the cross-sectional diameter of the sampling pipeline is smaller than that of the mixed sampling pipeline. The mixed sampling pipeline samples and outputs flowback fluid from multiple shale gas wells. Since there are differences in parameters between the flowback fluids from individual shale gas wells, using a pipeline with a larger cross-sectional diameter ensures the stability and safety of the flowback fluid delivery from the shale gas wells.

[0018] Furthermore, the end of the connector tube furthest from the inner tube is a flexible connector. Using a flexible connector allows for a more snug fit into the feed interface. At the same time, it reduces friction between the connector tube and the inner wall of the selector, significantly improving the service life of the selector.

[0019] The beneficial effects of this utility model are:

[0020] In this embodiment, the present invention utilizes a pipeline selector. When sampling flowback fluid from multiple shale gas wells is required, the drive motor in the selector rotates the inner core tube connector, aligning the pipe joint within the inner core tube connector with different feed inlets on the selector, thus enabling sampling of different shale gas well flowback fluids. In other words, this multi-channel shale gas well flowback fluid sampling device only requires the pipeline selector, allowing one device to sample flowback fluid from multiple shale gas wells, eliminating the need for multiple devices and effectively reducing labor and material costs. Furthermore, the device's simplification through a drive motor facilitates management and operation, solving the problems of existing technologies that require installing sampling equipment on each flowback fluid pipeline, resulting in high implementation costs and the need for separate operation and monitoring of each sampling device, hindering unified management and use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the selector structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the inner core tube connector structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of a multi-channel sampling device according to an embodiment of the present invention;

[0026] In the diagram, 1-drive motor, 2-selector, 3-feed interface, 4-mixed sampling outlet, 5-sampling outlet, 6-rotating shaft, 7-inner tube, 8-connector tube, 9-mixed sampling pipeline, 10-return liquid pipeline, 11-sampling pipeline. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] Example 1:

[0032] See Figures 1-4 This utility model provides a pipeline selector for a multi-channel sampling device for backflow liquid: including a frame, a pipeline selector, and pipelines connected to the pipeline selector.

[0033] like Figure 1 As shown, specifically, the pipeline selector includes: a drive motor 1, which is fixed to the top of the selector 2 via a bracket; the selector 2, which is fixed to the bracket via a pipeline, and has an internally hollow shell structure. The hollow structure allows for more optimized sampling options for the selector 2. By adjusting the internal volume of the selector 2, sampling of liquids of different densities can be achieved, giving this utility model more diverse applications. It should be noted that any tool that achieves other sampling functions by changing the volume or interface position of the selector 2 of this utility model is considered to fall within the protection scope of this utility model.

[0034] like Figure 2As shown, selector 2 has several evenly distributed feed ports 3 on its outer side near the top of selector 2. The feed ports 3 are connected to the interior of selector 2. Selector 2 has a sampling port at the bottom and a mixing sampling port on its outer side near the sampling port. Both the sampling port and the mixing sampling port are connected to the interior of selector 2. The feed ports 3, the sampling port and the mixing sampling port are provided with flanges at the ends away from selector 2. The flanges allow for faster connection to external pipelines.

[0035] like Figure 3 As shown, when this device needs to perform mixed sampling, it is not necessary to start the drive motor 1. It can be done by connecting the return fluid pipeline 10. When the return fluid pipeline 10 is connected, the shale gas well return fluid enters the selector 2 through the return fluid pipeline 10, and is output to the mixed sampling pipeline 119 through the mixed sampling interface and finally enters the storage device for storage.

[0036] like Figure 3 As shown, selector 2 is mounted on the frame after connecting the pipeline via a flange. Therefore, by disassembling the flange and the pipeline, selector 2 can be separated from the frame. This facilitates the maintenance of selector 2 and also expands the application scenarios of this invention. For example, it can also be used to sample other liquids that require multi-channel sampling, which can be achieved by properly connecting the flange on selector 2.

[0037] like Figure 4 As shown, the selector 2 has an inner core tube connector, which is used to receive shale gas well flowback fluid from different feed ports 3. Its specific structure is as follows:

[0038] The device includes a rotating shaft 6, an inner tube 7, and a connector tube 8 fixed to the inner tube 7 near the rotating shaft 6. The rotating shaft 6 is connected to the drive end of the drive motor 1. The top of the inner tube 7 is fixedly connected to the rotating shaft 6, and the bottom of the inner tube 7 is snapped into the inside of the sampling interface. The connector tube 8 and the feed interface 3 are on the same horizontal line. It should be noted that the end of the connector tube 8 away from the inner tube 7 is a flexible connector. The rotating shaft 6 is driven to rotate by the drive motor 1, and the inner tube 7 rotates within the selector 2. Since the connector tube 8 and the feed interface 3 are on the same horizontal line, the size of the connector tube 8 can be adjusted to allow it to connect into the sampling interface, thereby enabling the sampling and collection of shale gas well flowback fluid at different sampling interface locations.

[0039] Preferably, several return fluid pipelines 10 are fixedly installed on the frame. Valves are installed on the pipe bodies of the return fluid pipelines 10. One end of the return fluid pipeline 10 is connected to the feed interface 3 of the selector 2 via a flange, and the end away from the feed interface 3 of the selector 2 is equipped with a flange. The return fluid pipelines 10 are used to transport the return fluid from the shale gas well. This embodiment does not explicitly specify the connection method between the return fluid pipeline 10 and the shale gas well, but this can be achieved through the flange installed on the return fluid pipeline 10. The use of flanges ensures the airtightness and safety of the pipeline. Furthermore, due to the ease of installation of flanges, this invention can operate in different scenarios and regions, effectively improving its practicality. Similarly, flanges have a long service life, significantly reducing the maintenance cost of this invention.

[0040] Preferably, a sampling outlet 5 pipeline is fixedly installed on the frame. A valve is installed on the pipe body of the sampling outlet 5 pipeline. One end of the sampling outlet 5 pipeline is connected to the sampling interface of the selector 2 through a flange, and the other end away from the sampling interface of the selector 2 is provided with a flange. The sampling outlet 5 pipeline is used to transport the shale gas well flowback fluid sampled in the selector 2 to the storage device. The advantages of using a flange for the sampling outlet 5 pipeline are similar to those of the flowback fluid pipeline 10, so they will not be described in detail here.

[0041] Preferably, the mixed sampling interface is connected to the mixed sampling outlet 54 via the mixed sampling pipeline 119. The mixed sampling outlet 54 is equipped with a flange. The mixed sampling pipeline 119 is provided with a branch pipeline that is connected to the sampling outlet 5 pipeline. A valve is provided on the branch pipeline. By setting up the mixed sampling interface, the mixing and collection of shale gas well flowback fluid can be realized. The specific implementation method is as follows: the flow of the sampling outlet 5 pipeline is closed by the valve, and the mixed sampling pipeline 119 is opened by the valve, thereby realizing the mixed sampling and collection of shale gas well flowback fluid.

[0042] Preferably, the cross-sectional diameter of the sampling pipeline 11 is smaller than that of the mixed sampling pipeline 119. According to the above scheme, the sampling pipeline 11 is used to transport the individually sampled backflow liquid, and the mixed sampling pipeline 119 is used to transport the backflow liquid sampled from multiple sources. The use of the mixed sampling pipeline 119 with a larger inner diameter makes the sampling and transportation faster and ensures the sampling efficiency of the backflow liquid.

[0043] Preferably, the end of the connector tube 8 away from the inner tube 7 is a flexible connector. Using a flexible connector can ensure stable connection at the feed interface 3, while also facilitating the rotation of the inner tube 7 without abrading the inner wall of the selector 2, effectively improving the service life of the selector 2.

[0044] Example 2:

[0045] See Figure 5This embodiment provides one implementation of the present invention in a flowback fluid multi-channel sampling device. When it is necessary to sample the flowback fluid of a shale gas well, the selector 2 is used to select to sample the flowback fluid of a single shale gas well or multiple shale gas wells. The selection is achieved by the action of the drive motor 1 in the selector 2, which selects different pipelines. After sampling is completed, the sampled flowback fluid can be transported to the storage device through the sampling pipeline 11. It can be seen that the present invention has the advantages of simple operation and high feasibility. At the same time, when the sampled flowback fluid appears in a mixed form, the sampled flowback fluid is transported to the spring device through the mixed sampling pipeline 119. Transporting the sampled flowback fluid through different pipelines can effectively improve the accuracy of flowback fluid detection.

[0046] As can be seen from this embodiment, this utility model, through the setting of the pipeline selector, enables sampling of flowback fluid from multiple shale gas wells when sampling is required. The drive motor 1 in the pipeline selector rotates the inner core tube connector in the selector 2, aligning the pipe joint in the inner core tube connector with different feed inlets 3 on the selector 2, thus achieving sampling of different shale gas well flowback fluids. In other words, this utility model only requires the pipeline selector to achieve sampling of multiple shale gas well flowback fluids with a single device, eliminating the need for multiple devices, effectively reducing labor and material costs. Furthermore, this utility model can achieve this simply by the action of the drive motor 1, facilitating management and operation. It solves the problems of existing technologies where multiple flowback fluid samples from shale gas wells require the installation of sampling equipment on each flowback fluid pipeline 10, resulting in high implementation costs and the need for separate operation and monitoring of each sampling device, hindering unified management and use.

[0047] The above are merely preferred embodiments of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A pipeline selector for a backflow liquid multi-channel sampling device, characterized in that: Includes the pipe selector and the pipes connected to the pipe selector; Specifically, the pipe selector includes: The drive motor is fixed to the top of the selector by a bracket; The selector, fixed to the frame via piping, has a hollow shell structure. Several evenly distributed feed ports are located on the outer side of the selector near the top, and these feed ports are connected to the interior of the selector. A sampling port is located at the bottom of the selector, and a mixing sampling port is located on the outer side of the selector near the sampling port. Both the sampling port and the mixing sampling port are connected to the interior of the selector. A flange is located at the end of each feed port, sampling port, and mixing sampling port furthest from the selector. The selector is equipped with an inner core tube connector, which includes a rotating shaft, an inner tube, and a connector tube fixed to the side of the inner tube near the rotating shaft. The rotating shaft is connected to the drive end of the drive motor, the top of the inner tube is fixedly connected to the rotating shaft, and the bottom of the inner tube is snapped into the inside of the sampling interface. The connector tube and the feed interface are located on the same horizontal line.

2. A pipeline selector for a backflow liquid multi-channel sampling device according to claim 1, characterized in that: It includes several return liquid pipelines, each with a valve. One end of the return liquid pipeline is connected to the feed port of the selector via a flange, and the other end away from the feed port of the selector is equipped with a flange.

3. A pipeline selector for a multi-channel sampling device for backflow liquid according to claim 1, characterized in that: It includes a sampling outlet pipeline, with a valve installed at the pipeline body. One end of the sampling outlet pipeline is connected to the sampling interface of the selector via a flange, and the other end away from the sampling interface of the selector is equipped with a flange.

4. A pipeline selector for a multi-channel sampling device for backflow liquid according to claim 1, characterized in that: The mixed sampling interface is connected to the mixed sampling outlet through a mixed sampling pipeline. The mixed sampling outlet is equipped with a flange. The mixed sampling pipeline has a branch pipeline that is connected to the sampling outlet pipeline. The branch pipeline is equipped with a valve.

5. A pipeline selector for a backflow liquid multi-channel sampling device according to claim 4, characterized in that: The cross-sectional diameter of the sampling pipeline is smaller than that of the mixed sampling pipeline.

6. A pipeline selector for a backflow liquid multi-channel sampling device according to claim 1, characterized in that: The end of the connector tube furthest from the inner tube is a flexible connector.

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