Yield splitting device for multi-layer commingled recovery gas well

Abstract

The utility model relates to the technical field of natural gas production, in particular to a multilayer commingled gas production well yield splitting device which comprises a base pipe, a gas production pipe and a metering assembly, a gas collecting pipe is arranged in the base pipe, a plurality of layers of installation cavities are formed between first partition plates in the axial direction of the base pipe, and second partition plates are used for dividing the installation cavities into separation cavities and gas outlet cavities. According to the utility model, the natural gas in each gas layer can be collected through the arrangement of the gas collecting pipe, the flow of the natural gas in each gas layer can be detected at the same time through the metering assembly arranged in each gas outlet cavity, the collection of the natural gas cannot be stopped, and the detection efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas production, in particular to a production splitting device for a multi-layer combined production gas well. Background Art

[0002] A multi-layer combined production gas well is a wellhead design for natural gas production, mainly applied to the development of gas fields under complex geological conditions. Its core feature is to extract natural gas from multiple gas layers simultaneously to improve the production efficiency and economic benefits.

[0003] A device and method for splitting the production of a multi-layer combined production oil well provided by the publication number CN112554868A includes a ground controller and a measuring instrument arranged in the oil pipe connected by a cable. The outside of the measuring instrument is provided with two symmetrical centralizers. The inside of the measuring instrument is composed of a signal transceiver device, a mainframe, a pressure sensor, a temperature sensor, a sound wave emitting device, and a sound wave receiving device. The ground controller controls the operation of the measuring instrument to realize the measurement of the sound wave frequency, temperature, and pressure of each small layer by the measuring instrument, so as to calculate the splitting coefficient of each small layer of the multi-layer combined production oil well.

[0004] However, when the above device and method for splitting the production of a multi-layer combined production oil well are used, although the production splitting of the multi-layer combined production oil well is realized through the setting of the measuring instrument, the production splitting of the natural gas well cannot be realized, and there is a lack of a device for splitting the natural gas production of the natural gas well in the prior art. Therefore, there is an urgent need to provide a device that can realize the production splitting of the natural gas well. Content of the Utility Model

[0005] The purpose of the utility model is to provide a production splitting device for a multi-layer combined production gas well to solve the problems put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A production splitting device for a multi-layer combined production gas well, comprising:

[0008] A base pipe, in which a gas collecting pipe is arranged. The base pipe and the gas collecting pipe are connected by a first partition board. A plurality of layers of installation cavities are arranged along the axial direction of the base pipe between the first partition boards;

[0009] A second partition board, which is used to divide the installation cavity into a separation cavity and an air outlet cavity;

[0010] A gas production pipe, which is arranged on the side wall of the separation cavity and is used to produce gas from the gas well;

[0011] A switch member, which is arranged on the gas production pipe and is used to control the start and stop of the gas production of the gas production pipe;

[0012] A metering component, the metering component includes an intake pipe arranged on the second partition plate and a flow valve arranged on the intake pipe. When water and natural gas enter the separation chamber, the natural gas and water are separated. When the natural gas enters the gas collecting pipe through the intake pipe, the flow valve records the production of natural gas in each separation chamber.

[0013] A water pumping component, the water pumping component is used to pump water out of each separation chamber.

[0014] Preferably, the switch component includes an electric valve arranged on the gas extraction pipe and a protective cover arranged on the gas extraction pipe to cover the electric valve.

[0015] Preferably, the electric valve is used to control the opening and closing of the gas extraction pipe, and the protective cover is used to protect the electric valve.

[0016] Preferably, the intake pipe includes a receiving pipe arranged on the second partition plate and located in the air outlet chamber, and a spray pipe arranged on the gas collecting pipe and communicated with the receiving pipe.

[0017] Preferably, the flow valve is arranged on the receiving pipe, and one end of the spray pipe located in the gas collecting pipe is inclined upward.

[0018] Preferably, the water pumping component includes a water pumping pipe penetrating through each installation chamber, a water pumping port opened on the water pumping pipe and located at the bottom of each separation chamber, a water pumping tray wrapping the water pumping port, and a screen arranged on the water pumping tray.

[0019] Preferably, the water pumping pipe pumps water out of the separation chamber through the water pumping port.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] The present utility model includes a base pipe, a gas extraction pipe, and a metering component. A gas collecting pipe is arranged inside the base pipe. A plurality of layers of installation chambers are arranged along the axial direction of the base pipe between the first partition plates. The second partition plate is used to divide the installation chamber into a separation chamber and an air outlet chamber. Through the arrangement of the gas extraction pipe, the natural gas in each gas layer can be collected. Through the metering components arranged in each air outlet chamber, the natural gas flow in each gas layer can be split and detected simultaneously, and the collection of natural gas will not stop, and the detection efficiency is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present utility model;

[0023] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0024] Figure 3 Schematic cross-sectional structure diagram of another perspective of the present utility model.

[0025] In the figure: 1, base pipe; 2, gas collecting pipe; 3, first partition board; 4, second partition board; 5, separation chamber; 6, air outlet chamber; 7, gas extraction pipe; 8, flow valve; 9, electric valve; 10, protective cover; 11, receiving pipe; 12, spray pipe; 13, water extraction pipe; 14, water extraction port; 15, water extraction tray; 16, screen. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 3 , the present utility model provides a technical solution:

[0028] A multi-layer combined gas production well production splitting device, comprising:

[0029] Base pipe 1, a gas collecting pipe 2 is arranged inside the base pipe 1, the base pipe 1 and the gas collecting pipe 2 are connected by a first partition board 3. The first partition board 3 is connected to the gas collecting pipe 2 by welding or other means, and the first partition board 3 is connected to the base pipe 1 by welding or other means. Through the setting of the first partition board 3, the space between the base pipe 1 and the gas collecting pipe 2 is divided into several installation cavities, and the installation cavities are distributed along the axial direction of the base pipe 1. The specific number of installation cavities is reasonably set according to the use environment.

[0030] Second partition board 4, the second partition board 4 is arranged in the installation cavity. The second partition board 4 is connected to the gas collecting pipe 2 by welding or other means, and the second partition board 4 is connected to the base pipe 1 by welding or other means. The second partition board 4 is used to divide the installation cavity into a separation chamber 5 and an air outlet chamber 6, and the separation chamber 5 is located below the air outlet chamber 6.

[0031] Gas extraction pipe 7, the gas extraction pipe 7 is arranged on the side wall of the separation chamber 5 and is located on the base pipe 1. The gas extraction pipe 7 is fixedly connected to the base pipe 1 by welding or other means. The gas extraction pipe 7 is used to extract gas from the gas well, and the gas extraction pipe 7 is arranged on each separation chamber 5.

[0032] The switch component is arranged on the gas extraction pipe 7 and is used to control the start and stop of gas extraction of the gas extraction pipe 7. The switch component includes an electric valve 9 and a protective cover 10. The electric valve 9 is arranged on the gas extraction pipe 7 and is fixedly connected to the gas extraction pipe 7 by means of setting flanges and bolts, etc. The protective cover 10 is arranged on the gas extraction pipe 7 to cover the electric valve 9. The protective cover 10 is fixedly connected to the gas extraction pipe 7 by means of welding, etc. The protective cover 10 is fixedly connected to the base pipe 1 by means of welding, etc. The protective cover 10 completely wraps the electric valve 9 to prevent the electric valve 9 from being corroded by water or natural gas in the separation chamber 5.

[0033] The metering assembly includes an air suction pipe arranged on the second partition plate 4 and a flow valve 8 arranged on the air suction pipe. The air suction pipe includes a receiving pipe 11 and a spray pipe 12. The receiving pipe 11 is arranged on the second partition plate 4 and is fixedly connected to the second partition plate 4 by means of welding, etc. The receiving pipe 11 communicates with the separation chamber 5. The spray pipe 12 is obliquely arranged on the gas collecting pipe 2 and is fixedly connected to the gas collecting pipe 2 by means of welding, etc. One end of the spray pipe 12 located inside the gas collecting pipe 2 is inclined upward to prevent the natural gas ejected from the lower spray pipe 12 from entering the upper spray pipe 12. The other end of the spray pipe 12 is fixedly connected to the receiving pipe 11 by means of welding, etc. to make the receiving pipe 11 and the spray pipe 12 communicate. The flow valve 8 is arranged on the receiving pipe 11 and is fixedly connected to the receiving pipe 11 by means of setting flanges and bolts, etc. The flow valve 8 can select OPTIFLUX 1050 of Krohne Messtechnik (Shanghai) Co., Ltd. The specific models of the flow valve 8 and the electric valve 9 can also be reasonably selected according to the actual use situation. The flow valve 8 and the electric valve 9 are connected to the single-chip microcomputer 80C51 through data electrical signals for communication control. When water and natural gas enter the separation chamber 5 and the natural gas and water are separated, when the natural gas enters the gas collecting pipe 2 through the receiving pipe 11 and the spray pipe 12, the flow valve 8 records the production of natural gas in each separation chamber 5.

[0034] Water pumping assembly. The water pumping assembly is used to pump water out from each separation chamber 5. The water pumping assembly includes a water pumping pipe 13, a water pumping port 14, a water pumping tray 15 and a screen 16. The water pumping pipe 13 penetrates through each installation chamber until the installation chamber at the lowest part. The water pumping pipe 13 is fixedly connected to the first partition 3 and the second partition 4 respectively by means of welding or the like. The water pumping port 14 is opened on the water pumping pipe 13 and is located at the bottom of each separation chamber 5. The water pumping ports 14 are evenly arranged in each separation chamber 5. The water pumping tray 15 wraps the water pumping port 14. The water pumping tray 15 is fixedly connected to the water pumping pipe 13 by means of welding or the like. A groove is formed in the water pumping tray 15. The screen 16 is arranged on the top of the groove of the water pumping tray 15. The screen 16 is fixedly connected to the water pumping tray 15 by means of welding or the like. The screen 16 is fixedly connected to the water pumping pipe 13 by means of welding or the like. The screen 16 is used to prevent sundries from blocking the water pumping pipe 13. The water pumping pipe 13 realizes water pumping by connecting with a water pumping device such as a water pump. A valve can also be arranged on the water pumping pipe 13 to control the opening and closing of the water pumping pipe 13.

[0035] Working principle: During use, the mixtures of natural gas and water at different levels enter the corresponding separation chambers 5 through the corresponding gas production pipes 7. The natural gas and water are separated in the separation chambers 5. The natural gas will move in opposite directions and be sprayed into the gas collecting pipe 2 through the receiving pipes 11 and the spray pipes 12. The flow valves 8 on each receiving pipe 11 simultaneously detect the gas production of the natural gas at the corresponding level. The water pumping pipe 13 continuously pumps out the water deposited in each separation chamber 5.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production splitting device for a multi-layer commingled production gas well, characterized in that, Comprising: A base pipe, a gas collecting pipe is arranged inside the base pipe, the base pipe and the gas collecting pipe are connected by a first partition plate, and several layers of installation cavities are arranged along the axial direction of the base pipe between the first partition plates; A second partition plate, the second partition plate is used to divide the installation cavity into a separation cavity and an air outlet cavity; A gas extraction pipe, the gas extraction pipe is arranged on the side wall of the separation cavity, and the gas extraction pipe is used to extract gas from a gas well; A switch member, the switch member is arranged on the gas extraction pipe and is used to control the start and stop of gas extraction by the gas extraction pipe; A metering assembly, the metering assembly includes an air suction pipe arranged on the second partition plate and a flow valve arranged on the air suction pipe. When water and natural gas enter the separation cavity, the natural gas and water are separated. When the natural gas enters the gas collecting pipe through the air suction pipe, the flow valve records the gas production in each separation cavity; A water pumping assembly, the water pumping assembly is used to pump water out of each separation cavity.

2. The production splitting device for a multi-layer commingled production gas well according to claim 1, wherein: The switch member includes an electric valve arranged on the gas extraction pipe and a protective cover arranged on the gas extraction pipe to cover the electric valve.

3. The production splitting device for a multi-layer combined production gas well according to claim 2, wherein: The electric valve is used to control the opening and closing of the gas extraction pipe, and the protective cover is used to protect the electric valve.

4. The multi-layer combined production gas well output splitting device according to claim 3, characterized in that: The air suction pipe includes a receiving pipe arranged on the second partition plate and located in the air outlet cavity and a spray pipe arranged on the gas collecting pipe and communicated with the receiving pipe.

5. The multi-layer combined production gas well production splitting device according to claim 4, wherein: The flow valve is arranged on the receiving pipe, and one end of the spray pipe located inside the gas collecting pipe is inclined upward.

6. The production splitting device for a multi-layer commingled production gas well according to claim 5, wherein: The water pumping assembly includes a water pumping pipe penetrating through each installation cavity, a water pumping port opened on the water pumping pipe and located at the bottom of each separation cavity, a water pumping disc wrapping the water pumping port, and a sieve mesh arranged on the water pumping disc.

7. A multi-layer combined production gas well production splitting device according to claim 6, characterized in that: The water pumping pipe pumps water out of the separation cavity through the water pumping port.

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