Low-liquid-volume natural gas well produced water collecting device

Abstract

The utility model relates to the field of petroleum and natural gas extraction, in particular to a low-liquid-volume natural gas well produced water collecting device. Comprising a device body, and a collection kit is arranged in the device body; the collecting suite comprises a first water absorbing piece arranged in the length direction of the device body, a plurality of second water absorbing pieces are arranged on the first water absorbing piece, and when natural gas passes through the collecting suite, moisture in the natural gas can be absorbed through the first water absorbing piece and the second water absorbing pieces. By means of the first water absorption part and the second water absorption part, when natural gas passes through the device, water in the natural gas can be collected through the water absorption characteristic of materials, the arrangement area of the first water absorption part is large, the contact range of the first water absorption part and the natural gas can be enlarged, and therefore the water absorption capacity is enhanced; the multiple second water absorption pieces are arranged in a staggered mode in sequence, the contact area between the second water absorption pieces and the natural gas flow is further enlarged, and water absorption is more sufficient.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas exploitation, and particularly relates to a produced water collection device for low-liquid-volume natural gas wells. Background Art

[0002] With the continuous deepening of gas field exploration and development, the dynamic monitoring of the production status and fluid characteristics of gas wells has become increasingly crucial, enabling us to grasp the fluid dynamics of gas wells in real time, including gas components, liquid content, and their change trends, so as to quickly adjust the production system and optimize the operation management mode according to the monitoring results to ensure the efficient, stable, and safe operation of the gas field.

[0003] In terms of water quality monitoring, the traditional method is to collect water samples in the separator of the downstream gas gathering station and conduct detailed chemical analysis. However, for gas wells with low liquid production, this method is not applicable. Due to the long pipeline and extremely low liquid production, it is difficult to stably obtain water samples in the separator, which increases the difficulty of water quality monitoring and also limits the accuracy and timeliness of the dynamic analysis of the water quality of low-liquid-volume gas wells.

[0004] Therefore, it is crucial for those skilled in the art to design a water sample collection device for low-liquid-production gas wells. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a produced water collection device for low-liquid-volume natural gas wells, which can be applicable to the water sample collection of low-liquid-production gas wells and ensure that water samples can be collected under different working conditions.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A produced water collection device for low-liquid-volume natural gas wells of the utility model includes a device body, and a collection kit is arranged inside the device body; the collection kit includes a first water absorption member arranged along the length direction of the device body, and a plurality of second water absorption members are arranged on the first water absorption member. When natural gas passes through the collection kit, the moisture in the natural gas can be absorbed through the first water absorption member and the second water absorption members.

[0008] As a further improvement, the device body is tubular, and at least one first water absorption member is arranged inside the device body.

[0009] As a further improvement, an installation groove is arranged on the inner wall of the device body, and the first water absorption member is arranged in the installation groove.

[0010] As a further improvement, there are two first water absorption members.

[0011] As a further improvement, the second water absorption member is rod-shaped, and a plurality of second water absorption members are arranged in a staggered manner in sequence.

[0012] As a further improvement, the diameter of the second water-absorbing member is 2-3 mm.

[0013] As a further improvement, the length of the second water-absorbing member is 8-10 mm.

[0014] As a further improvement, the first water-absorbing member and the second water-absorbing member are made of EVA foam.

[0015] As a further improvement, flanges for connecting to pipes are provided at both ends of the device body.

[0016] As a further improvement, the device body is made of an alloy material.

[0017] The present utility model has achieved the following technical effects compared with the prior art:

[0018] With the first water-absorbing member and the second water-absorbing member provided in the present utility model, when natural gas passes through this device, the water in the natural gas can be collected by using the water-absorbing characteristics of the material. The first water-absorbing member has a large setting area, which can expand the contact range between the first water-absorbing member and the natural gas, thereby enhancing the water absorption capacity. In addition, multiple second water-absorbing members are provided in the present utility model, and the multiple second water-absorbing members adopt a staggered arrangement. This structural method not only further expands the contact area with the natural gas flow, but also increases the complexity of the path through which the natural gas flows through the staggered structure, making the water absorption more sufficient; by combining and applying two different structural methods, the contact efficiency between the water-absorbing member and the natural gas is significantly improved, and by collecting the produced water, it provides guarantee for the next water quality monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the produced water collection device for low-liquid-volume natural gas wells of the present utility model;

[0020] Figure 2 is a side view of the overall structure of the produced water collection device for low-liquid-volume natural gas wells of the present utility model.

[0021] Reference numerals: 1, device body; 2, flange; 3, first water-absorbing member; 4, second water-absorbing member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and connotation of the appended claims.

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] As Figure 1 shown, a collection device for produced water from a low-liquid-volume natural gas well of the present utility model includes a device body 1, and a collection kit is arranged inside the device body 1; the collection kit includes a first water-absorbing member 3 arranged along the length direction of the device body 1, and a plurality of second water-absorbing members 4 are arranged on the first water-absorbing member 3. When natural gas passes through the collection kit, the moisture in the natural gas can be absorbed by the first water-absorbing member 3 and the second water-absorbing members 4.

[0025] The device body 1 is tubular, and at least one first water-absorbing member 3 is arranged inside the device body 1. An installation groove is arranged on the inner wall of the device body 1, and the first water-absorbing member 3 is arranged in the installation groove. There are two first water-absorbing members 3. In the embodiment, the device body 1 is designed to be tubular to facilitate installation in a natural gas transmission pipeline and ensure that natural gas can pass through smoothly. The first water-absorbing member 3 can capture and absorb the moisture carried in the natural gas; in the embodiment, according to specific layout requirements, different numbers of first water-absorbing members 3 can be selected, which is not limited here. In this embodiment, it is preferably provided with two first water-absorbing members 3. Figure 1 As shown, the two first water-absorbing members 3 are respectively arranged at the upper and lower ends inside the device body 1, and a flow channel for natural gas to pass through is arranged at intervals between the two first water-absorbing members 3.

[0026] In the embodiment, an installation groove is arranged inside the device body 1, and the number of installation grooves matches the number of the first water-absorbing members 3. The arranged installation groove provides an installation space for the first water-absorbing member 3 and ensures the effectiveness and stability of the water absorption process; during installation, the shape of the installation groove can exist in a circular shape, a spiral shape or other shapes to ensure that when natural gas passes through the device body 1, it can contact the first water-absorbing member 3 to the greatest extent while avoiding obstruction to the natural gas flow. To ensure that natural gas can flow evenly and smoothly through the first water-absorbing member 3, thereby improving the efficiency of moisture absorption.

[0027] In the embodiment, the first water-absorbing member 3 can be firmly installed in the installation groove on the inner wall of the device body 1 by a fixing bracket, an adhesive or other means to ensure that it will not fall off or shift during long-term use; in the embodiment, the thickness of the first water-absorbing member 3 is preferably 5 mm, the diameter is preferably 54 mm, and the length is the same as that of the device body 1. By defining the size parameters, the water absorption efficiency is further improved.

[0028] The second water-absorbing member 4 is rod-shaped, and a plurality of second water-absorbing members 4 are arranged in a staggered manner in sequence. The diameter of the second water-absorbing member 4 is 2-3 mm. The length of the second water-absorbing member 4 is 8-10 mm.

[0029] As Figure 1As shown, in the embodiment, the second water absorbent 4 is in a rod shape, and a plurality of second water absorbents 4 are arranged in a staggered manner in sequence on the first water absorbent 3. The staggered arrangement not only maximizes the contact area between the second water absorbent 4 and the natural gas flow, but also improves the water absorption efficiency by increasing the complexity of the fluid path.

[0030] The diameter of each second water absorbent 4 is between 2 and 3 mm, preferably 2 mm. This size ensures a sufficient water absorption surface area and avoids unnecessary obstruction to the natural gas flow caused by an overly large volume. At the same time, the length of the second water absorbent 4 is 8 to 10 mm, preferably 8 mm. This size can ensure that the second water absorbent 4 fully absorbs water and is also convenient for arrangement and installation within the device body 1.

[0031] In the embodiment, the number of the second water absorbents 4 is preferably 20, but it is not limited thereto. According to different specific usage scenarios, the number of the second water absorbents 4 can be increased or decreased to meet the requirements for water absorption efficiency in different scenarios. In the embodiment, through the setting of the second water absorbents 4, the removal efficiency of moisture in natural gas can be further improved. This design not only improves the water absorption performance of the device, but also ensures its reliability and durability.

[0032] The first water absorbent 3 and the second water absorbent 4 are made of EVA foam. In the embodiment, EVA foam is preferably used. Although the water absorption rate of EVA foam is low, in order to ensure a long service life and durability, using EVA foam can improve the durability of this device.

[0033] Flanges 2 for connecting to pipelines are provided at both ends of the device body 1. In the embodiment, the provided flanges 2 are for connecting to the flanges 2 of the natural gas transmission pipeline. The flanges 2 not only ensure that the device body 1 can be stably installed in the pipeline system, but also ensure that natural gas will not leak when passing through the device, thereby maintaining the sealing and safety of the entire system. During specific installation, the flanges 2 at both ends of the device body 1 are connected to the pipeline flanges 2 through fasteners such as bolts and nuts, and the entire connection process is simple and convenient.

[0034] The device body 1 is made of an alloy material. The alloy material has high strength and hardness, can withstand the pressure and impact generated during natural gas transmission, and ensures the structural integrity and safety of the device body 1. At the same time, the alloy material also has good corrosion resistance and can resist the erosion of corrosive substances (such as hydrogen sulfide, carbon dioxide, etc.) that may exist in natural gas, thereby extending the service life of the device. In the embodiment, the alloy material is preferably 304 stainless steel, but it is not limited thereto. Other alloy materials can also be used. The specification parameters of the device body 1 in the embodiment are as follows: the pressure-bearing capacity is 10 Mpa, the length is 100 cm, the diameter is 70 mm, and the wall thickness is 6 mm.

[0035] When the utility model is in use, the device is installed at the wellhead short joint and connected through the flange 2. After running for 2 - 3 months, the device is removed, the internal collection kit of the device is taken out, and the collection kit is extruded to obtain the produced water of the well for testing.

[0036] Through the first water-absorbing member and the second water-absorbing member provided in the utility model, when natural gas passes through the device, the water in the natural gas can be collected by using the water-absorbing property of the material. The first water-absorbing member has a large set area, which can expand the contact range between the first water-absorbing member and the natural gas, thereby enhancing the water absorption capacity. In addition, a plurality of second water-absorbing members are provided in the utility model, and the plurality of second water-absorbing members are arranged in a staggered manner in sequence. This structural method not only further expands the contact area with the natural gas flow, but also increases the complexity of the path through which the natural gas flows through the staggered structure, making the water absorption more sufficient. By combining and applying two different structural methods, the contact efficiency between the water-absorbing member and the natural gas is significantly improved, and the collection of the produced water provides a guarantee for the next water quality monitoring.

[0037] It should be noted that in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] Any process or method description shown in the flowchart or described in other ways herein can be understood to represent a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of this application includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed, which should be understood by those skilled in the technical field to which the embodiments of this application belong.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

[0041] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where like or similar reference numerals designate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only for explaining the present application, and should not be construed as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0042] Examples of the present application will be described in detail below. Examples of the examples are shown in the drawings, where like or similar reference numerals designate like or similar elements or elements having like or similar functions throughout. The examples described below by referring to the drawings are exemplary and are intended to be used for explaining the present application, and should not be construed as limiting the present application.

Claims

1. A collecting device for produced water from low-liquid-volume natural gas wells, characterized in that, It includes a device body, and a collection kit is provided inside the device body; The collection kit includes a first water-absorbing member arranged along the length direction of the device body, and a plurality of second water-absorbing members are provided on the first water-absorbing member. When natural gas passes through the collection kit, the moisture in the natural gas can be absorbed through the first water-absorbing member and the second water-absorbing member.

2. The low-liquid-volume natural gas well produced water collection device according to claim 1, characterized in that, The device body is tubular, and at least one first water-absorbing member is provided inside the device body.

3. The low-liquid-volume natural gas well produced water collection device according to claim 2, characterized in that, An installation groove is provided on the inner wall of the device body, and the first water-absorbing member is arranged in the installation groove.

4. The low-liquid-volume natural gas well produced water collection device according to claim 2, characterized in that, There are two first water-absorbing members.

5. The low-liquid-volume natural gas well produced water collection device according to claim 1, wherein, The second water-absorbing member is rod-shaped, and a plurality of second water-absorbing members are arranged in a staggered manner in sequence.

6. The collection device for produced water from low-liquid-volume natural gas wells according to claim 5, wherein The diameter of the second water-absorbing member is 2 - 3 mm.

7. The low-liquid-volume natural gas well produced water collection device according to claim 5, wherein, The length of the second water-absorbing member is 8 - 10 mm.

8. The low-liquid-volume natural gas well produced water collection device according to claim 5, characterized in that The first water-absorbing member and the second water-absorbing member are made of EVA foam.

9. The collection device for produced water from low-liquid-volume natural gas wells according to claim 1, wherein Flanges for connecting with pipelines are provided at both ends of the device body.

10. The collection device for produced water from low-liquid-volume natural gas wells according to claim 9, characterized in that, The device body is made of alloy material.

Images