CN210424494U

CN210424494U - Multifunctional valve bank pry for shale gas

Info

Publication number: CN210424494U
Application number: CN201921502110.2U
Authority: CN
Inventors: 潘嘉; 唐建信; 钱劲; 李书应; 孟良; 傅天安; 付亦升; 任魁杰
Original assignee: China Petroleum and Chemical Corp; Sinopec East China Co
Current assignee: China Petroleum and Chemical Corp; Sinopec East China Co
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-04-28
Anticipated expiration: 2029-09-10

Abstract

The utility model relates to a shale gas multifunctional valve bank pry, which comprises a plurality of gas collecting pipelines (1) and a plurality of production manifolds (4), wherein the gas collecting pipelines (1) are provided with a gas-liquid two-phase flowmeter (2) and a pressure relief valve (9), the gas collecting pipelines connected with the outlet of the gas-liquid two-phase flowmeter (2) are connected with a plurality of gas collecting branch pipes (101), the gas collecting branch pipes (101) are provided with ball valves (3), the production manifolds (4) are divided into common production manifolds and pressure boosting manifolds according to different pressures, the gas collecting branch pipes (101) are respectively connected with the common production manifolds and the pressure boosting manifolds, the gas collecting branch pipes (101) are provided with the ball valves (3), the common production manifolds and the pressure boosting manifolds are provided with pressure gauges (5), transmitters (6) and emptying stop valves (8), the utility model realizes the functions of shale gas wells with different pressure grades on a gas collecting platform through the valve conversion design, the construction cost is saved.

Description

Multifunctional valve bank pry for shale gas

Technical Field

The utility model relates to an oil and gas exploitation technical field, especially a multi-functional valves sled of shale gas.

Background

At present, each shale gas field in China is developed in a well factory form, with the extraction of shale gas of a shale gas well, stratum energy is attenuated, well head pressure is reduced, and in order to ensure stable yield and yield increase of the shale gas well, shale gas pressurized extraction is imperative. The shale gas later stage is excavated latent stage and is faced two big difficulties, lies in gas well bottom pressure undersize on the one hand, and later stage pressure decay is very fast, and on the other hand lies in receiving the interference of gas field water for the narrowing of stratum infiltration stream passageway diminishes, and then has reduced effective permeability, and gas field water forms the hydrops in the pit shaft simultaneously, hinders shale gas to well head migration. The shale gas exploitation can simultaneously exploit a plurality of wells, the pressure of shale gas exploited by different wells is different, the gas collection is unstable due to overlarge pressure difference, and the shale gas with different pressures is mainly separated by a separator in the existing pressurized exploitation, so that stable gas collection is ensured. Compared with a pipe fitting and a valve, the separator is expensive, and the equipment cost of gas field construction is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a control simple and convenient, low cost's valves sled.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a multi-functional valves sled of shale gas, includes many gas collecting line and many production manifold, is provided with the double-phase flowmeter of gas-liquid on the gas collecting line, and the gas collecting line of being connected with the double-phase flowmeter exit linkage of gas-liquid divides into many gas collecting branch pipes, and the production manifold divide into ordinary production manifold and pressure boost manifold according to the pressure difference, gas collecting branch pipe is connected with ordinary production manifold and pressure boost manifold respectively, be provided with the ball valve on the gas collecting branch pipe, be provided with manometer and changer on ordinary production manifold and the pressure boost manifold.

And the gas collecting pipelines connected with the outlets of the gas-liquid two-phase flow meters are provided with pressure relief valves.

And the common production manifold and the pressurization manifold are both provided with emptying stop valves.

And the common production manifold and the pressurization manifold are connected with other production system manifolds through reducing joints.

The gas-liquid two-phase flowmeter is a two-phase flowmeter which measures the gas-liquid two-phase fraction by using a low-energy gamma ray measurement principle and measures the total gas-liquid flow by using a Venturi principle, and a wireless module is arranged in the gas-liquid two-phase flowmeter.

The utility model has the advantages of it is following:

the utility model discloses get the valves on the gas production flow of conventional shale gas, propose in conventional production, through gas-liquid two-phase flow meter and the use of conversion valve, realized the reconstruction of production flow, realized conventional, 2 kinds of production modes of pressure boost simultaneously, structural design is reasonable, has realized real-time continuous online measurement, more can effectively reflect shale gas well output developments; through standard modularization and skid-mounted design, the use of separators in conventional and supercharging processes is reduced, the installation is simplified, the influence on the environment is reduced, and the cost is saved.

Drawings

FIG. 1 is a schematic flow chart of the present invention;

in the figure: 1-gas collection pipeline, 2-gas-liquid two-phase flowmeter, 3-ball valve, 4-production manifold, 5-pressure gauge, 6-transmitter, 7-reducer union, 8-emptying stop valve, 9-pressure release valve and 101-gas collection branch pipe.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1, the multifunctional valve bank pry for shale gas comprises a plurality of gas collecting pipelines 1 and a plurality of production manifolds 4, wherein a gas-liquid two-phase flowmeter 2 is arranged on each gas collecting pipeline 1, a plurality of gas collecting branch pipes 101 are connected with the gas collecting pipelines connected with outlets of the gas-liquid two-phase flowmeters 2, the production manifolds 4 are divided into common production manifolds and booster manifolds according to different pressures, the gas collecting branch pipes 101 are respectively connected with the common production manifolds and the booster manifolds, ball valves 3 are arranged on the gas collecting branch pipes 101, and pressure gauges 5 and transmitters 6 are arranged on the common production manifolds and the booster manifolds.

And the gas collecting pipelines connected with the outlets of the gas-liquid two-phase flow meters 2 are provided with pressure release valves 9.

And the ordinary production manifold and the pressurization manifold are both provided with emptying stop valves 8.

Preferably, the pressure release valves 9 on the gas collecting branch pipes 101 and the emptying stop valves 8 on the production manifold 4 are ball valves, the models are DN50 and DN25 in sequence, the ball valve 3 and the pressure grade are 6.3Mpa, DN65 valves are used for gas collecting control, the DN50 valves are used for pressure release at the front ends of manifolds or enter a bypass flow, and the DN25 valves are used for pressure release at the rear ends of the manifolds.

The common production manifold and the pressurization manifold are connected with other production system manifolds through reducing joints 7.

The gas-liquid two-phase flowmeter 2 is a two-phase flowmeter which measures the gas-liquid two-phase fraction by using a low-energy gamma ray measuring principle and measures the total gas-liquid flow by using a Venturi principle, and a wireless module is arranged in the gas-liquid two-phase flowmeter 2 and can wirelessly transmit and display the gas-liquid flow, the pressure and the temperature on site.

The pressure gauge 5 and the transmitter 6 can wirelessly transmit and display manifold pressure parameters on site.

Preferably, the production manifold 4 and the pressurization manifold are seamless steel pipes with the outer diameter of 168.3mm, the wall thickness of 6.5mm, the material L245N and the grade PSL 2.

The working process of the utility model is as follows:

the gas collection pipeline 1 conveys shale gas extracted from a gas well to a production manifold 4, the gas-liquid two-phase flowmeter 2 measures the flow, pressure and temperature of the shale gas in the gas collection pipeline 1 in the transportation process, the measured data are sent to a gas production control center through a built-in wireless module in the gas-liquid two-phase flowmeter 2, the gas production control center selects the production manifold 4 which meets the flow, pressure and temperature according to the received data, and a ball valve 3 on a gas collection branch pipe 101 connected with the production manifold 4 is opened, so that the shale gas is conveyed into the production manifold 4. If the shale gas in the gas collection pipeline 1 is not suitable for being conveyed to the production manifold 4 due to flow, pressure, temperature or other factors, the pressure release valve 9 on the gas collection pipeline 1 can be opened, and the shale gas is released into the bypass flow for treatment. The production manifold 4 is provided with a pressure gauge 5 and a transmitter 6, so that the pressure in the production manifold 4 can be monitored in real time, and manifold pressure parameters can be remotely sent to a gas production control center through the transmitter 6. The phenomenon of over-high pressure occurs in the production manifold 4, the pressure can be released through the emptying stop valve 8, and the shale gas in the production manifold 4 is discharged into a bypass flow for treatment. The production manifold 4 is connected to other production system manifolds by a reducer union 7.

Claims

1. The utility model provides a multi-functional valves sled of shale gas, includes many gas collecting line (1) and many production manifold (4), its characterized in that: the gas collecting pipeline (1) is provided with a gas-liquid two-phase flowmeter (2), the gas collecting pipeline connected with the outlet of the gas-liquid two-phase flowmeter (2) is divided into a plurality of gas collecting branch pipes (101), the production manifold (4) is divided into a common production manifold and a pressurization manifold according to different pressures, the gas collecting branch pipes (101) are respectively connected with the common production manifold and the pressurization manifold, the gas collecting branch pipes (101) are provided with ball valves (3), and the common production manifold and the pressurization manifold are provided with pressure gauges (5) and transmitters (6).

2. The multifunctional valve bank prying tool for shale gas as claimed in claim 1, wherein: and the gas collecting pipelines connected with the outlets of the gas-liquid two-phase flow meters (2) are provided with pressure relief valves (9).

3. The multifunctional valve bank prying tool for shale gas as claimed in claim 1, wherein: and the common production manifold and the pressurization manifold are both provided with emptying stop valves (8).

4. The multifunctional valve bank prying tool for shale gas as claimed in claim 1, wherein: the common production manifold and the pressurization manifold are connected with other production system manifolds through reducing joints (7).

5. The multifunctional valve bank prying tool for shale gas as claimed in claim 1, wherein: the gas-liquid two-phase flowmeter (2) is a two-phase flowmeter which measures the gas-liquid two-phase fraction by using a low-energy gamma ray measurement principle and measures the total gas-liquid flow by using a Venturi principle, and a wireless module is arranged in the gas-liquid two-phase flowmeter (2).