CN215718660U

CN215718660U - Gas-liquid mixed foam driving system

Info

Publication number: CN215718660U
Application number: CN202120061192.2U
Authority: CN
Inventors: 金朝阳; 龙云; 王跃飞; 郑波; 曹亮; 吕云峰
Original assignee: Chongqing Gas Compressor Factory Co Ltd
Current assignee: Chongqing Gas Compressor Factory Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2022-02-01
Anticipated expiration: 2031-01-11

Abstract

The utility model provides a gas-liquid mixed foam driving system, which is used for solving the problem that the injection of gas-liquid mixing cannot be automatically realized in the prior art. The method comprises the following steps: the system comprises a gas injection subsystem, a nitrogen production skid block, a high-pressure compressor skid block and a gas injection valve bank skid block, wherein the nitrogen production skid block is used for producing nitrogen, the high-pressure compressor skid block is used for pressurizing the nitrogen, and the gas injection valve bank skid block is used for outputting the pressurized nitrogen; the liquid injection subsystem comprises a stirring pry block, a water injection pump pry block and a liquid injection valve bank pry block, wherein the stirring pry block is used for mixing water and liquid medicine, the water injection pump pry block is used for pressurizing the water after medicine is added, and the liquid injection valve bank pry block is used for outputting the pressurized water; and the mixed injection allocation skid block is used for mixing water and gas and conveying the mixed gas and liquid to a wellhead. Meanwhile, the function of independent gas injection and independent liquid injection can be reserved, and the device can adapt to various working conditions.

Description

Gas-liquid mixed foam driving system

Technical Field

The utility model relates to the technical field of oil extraction in oil fields, in particular to a gas-liquid mixed foam flooding system.

Background

The existing air foam driving system equipment comprises a water injection system and a gas injection system, wherein the water injection system and the gas injection system have two types of pressure, namely 25MPa and 35 MPa. The original air foam driving system can only carry out water injection or gas injection independently, a manual valve needs to be adjusted on site manually when gas and liquid are mixed, and because the gas injection and the water injection are both high-pressure, potential safety hazards exist in manual operation.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a gas-liquid mixed foam driving system, which is used for solving the problem that the injection of gas-liquid mixture cannot be automatically realized in the prior art.

To achieve the above and other related objects, the present invention provides a gas-liquid mixed foam flooding system, comprising:

the system comprises a gas injection subsystem, a nitrogen production skid block, a high-pressure compressor skid block and a gas injection valve bank skid block, wherein the nitrogen production skid block is used for producing nitrogen, the high-pressure compressor skid block is used for pressurizing the nitrogen, and the gas injection valve bank skid block is used for outputting the pressurized nitrogen;

the liquid injection subsystem comprises a stirring pry block, a water injection pump pry block and a liquid injection valve bank pry block, wherein the stirring pry block is used for mixing water and liquid medicine, the water injection pump pry block is used for pressurizing the water after medicine is added, and the liquid injection valve bank pry block is used for outputting the pressurized water;

and the mixed injection allocation skid block is used for mixing water and gas and conveying the mixed gas and liquid to a wellhead.

Optionally, the gas injection valve bank pry block is communicated with the mixed injection allocation pry block through at least two gas injection pipes, the liquid injection valve bank pry block is communicated with the mixed injection allocation pry block through at least two liquid injection pipes, the mixed injection allocation pry block is provided with at least two, and the number of the mixed injection allocation pry blocks is matched with the number of the gas injection pipes and the number of the liquid injection pipes.

Optionally, the gas injection pipe with all be equipped with the check valve on annotating the liquid pipe, just the both sides of check valve all are equipped with the flow valve, the flow valve is used for controlling the flow size of gas or liquid.

Optionally, the gas injection pipe with annotate the liquid and all connect in parallel on the pipe and have a bypass pipe, the check valve with the pipeline at flow valve place with bypass pipe is parallelly connected, be equipped with the flow valve on the bypass pipe.

Optionally, the stirring pry block comprises two stirring tanks arranged in parallel.

Optionally, a filtering system is arranged in front of the nitrogen making pry block.

Optionally, the filtering system sequentially comprises a screw air compressor, a first air buffer tank, an essential oil filter, a cooling dryer, a dust filtering group and a second air buffer tank.

Optionally, the nitrogen making skid block comprises a nitrogen making unit and a nitrogen buffer tank, wherein the nitrogen making unit comprises at least two parallel adsorption towers.

Optionally, the gas injection valves skid includes a plurality of bronchus, the bronchus sets up in parallel, every all be equipped with flowmeter and flow valve on the bronchus.

Optionally, annotate liquid valves sled piece and include a plurality of branch liquid pipes, branch liquid pipe sets up in parallel, every all be equipped with flowmeter and flow valve on the branch liquid pipe.

As described above, the gas-liquid mixed foam flooding system of the present invention has at least the following beneficial effects:

realize the production and the pressurization of nitrogen gas through the gas injection subsystem, realize adding medicine and pressurization of water through annotating the liquid subsystem, then reach and mix and join in marriage the injection sled piece and mix, and can remain the function of independent gas injection and liquid alone simultaneously, it can adapt to multiple operating mode.

Drawings

FIG. 1 shows a schematic of the gas-liquid mixed foam flooding system of the present invention.

FIG. 2 is a schematic representation of the insufflation subsystem of the present invention.

Fig. 3 is a schematic diagram of the priming subsystem of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 3. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so as to be understood and read by those skilled in the art, and therefore, the present disclosure is not limited to the conditions of the present disclosure, and any modifications of the structures, the changes of the ratios, or the adjustments of the sizes, should fall within the scope of the present disclosure without affecting the functions and the achievable purposes of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The following examples are for illustrative purposes only. The various embodiments may be combined, and are not limited to what is presented in the following single embodiment.

Referring to fig. 1 to 3, an embodiment of a gas-liquid mixed foam driving system according to the present invention includes: the system comprises a gas injection subsystem, a liquid injection subsystem and a mixed injection allocation pry block 1, wherein the gas injection subsystem comprises a nitrogen making pry block 21, a high-pressure compressor pry block 22 and a gas injection valve bank pry block 23, the nitrogen making pry block 21 is used for producing nitrogen, the high-pressure compressor pry block 22 is used for pressurizing the nitrogen, and the gas injection valve bank pry block 23 is used for outputting the pressurized nitrogen; the liquid injection subsystem comprises a stirring pry block 31, a water injection pump pry block 32 and a liquid injection valve bank pry block 33, wherein the stirring pry block 31 is used for mixing water with liquid medicine, the water injection pump pry block 32 is used for pressurizing the water after medicine addition, and the liquid injection valve bank pry block 33 is used for outputting the pressurized water; the mixing injection allocation skid block 1 is used for mixing water and gas and conveying the mixed gas and liquid to a wellhead. Realize the production and the pressurization of nitrogen gas through the gas injection subsystem, realize adding medicine and pressurization of water through annotating the liquid subsystem, then reach and mix and join in marriage injection sled piece 1 and mix, and can remain the function of independent gas injection and liquid alone simultaneously, it can adapt to multiple operating mode.

In this embodiment, referring to fig. 2, the gas injection valve group pry block 23 is communicated with the mixed injection allocation pry block 1 through at least two gas injection pipes 231, the liquid injection valve group pry block 33 is communicated with the mixed injection allocation pry block 1 through at least two liquid injection pipes 331, the mixed injection allocation pry block 1 is at least two, and the number of the mixed injection allocation pry blocks 1 is matched with the number of the gas injection pipes 231 and the liquid injection pipes 331. The injection in the time of can realizing a plurality of oiling mouths, gas injection subsystem and notes liquid subsystem can correspond a plurality of mixes injection allocation sled piece 1 respectively simultaneously, realizes a plurality of outputs, and can independent control between each output.

In this embodiment, referring to fig. 2 and fig. 3, the gas injection pipe 231 and the liquid injection pipe 331 are both provided with a check valve 41, and both sides of the check valve 41 are both provided with a flow valve 42, and the flow valve 42 is used for controlling the flow rate of gas or liquid. The one-way valve 41 can prevent gas or liquid from flowing back to affect the normal operation of the system.

In this embodiment, referring to fig. 2 and fig. 3, a bypass pipe 43 is connected in parallel to both the gas injection pipe 231 and the liquid injection pipe 331, a pipeline in which the check valve 41 and the flow valve 42 are located is connected in parallel to the bypass pipe 43, and the flow valve 42 is arranged on the bypass pipe 43. The bypass pipe 43 is designed so that when the gas injection pipe 231 or the liquid injection pipe 331 has a failure, the gas can be circulated through the bypass pipe 43, and after the completion of the maintenance, the bypass pipe 43 is closed to return to the normal operation mode.

In this embodiment, referring to fig. 3, the stirring pry block 31 includes two stirring tanks 311 arranged in parallel. The two parallel stirring tanks 311 can increase the stirring efficiency.

In this embodiment, referring to fig. 3, the gas injection valve set pry block 23 includes a plurality of branch pipes 232, the branch pipes 232 are arranged in parallel, and each branch pipe 232 is provided with a flow meter 2321 and a flow valve 42. The gas can be divided into several sub-streams so that several mixing injection skid 1 can be adapted.

In this embodiment, referring to fig. 2, a filtering system is disposed in front of the nitrogen making pry block 21. Optionally, the filtering system sequentially includes a screw air compressor 201, a first air buffer tank 202, an essential oil filter 203, a cooling dryer 204, a dust filtering group 205, and a second air buffer tank 206. Through multiple buffering and multiple filtration for the filter effect is better, can effectively get rid of lubricating oil and dust in the air, can cool off and dry the air simultaneously again.

In this embodiment, referring to fig. 2, the nitrogen making skid 21 includes a nitrogen making unit 211 and a nitrogen buffer tank 212, and the nitrogen making unit 211 includes at least two parallel adsorption towers 2111.

In this embodiment, optionally, the liquid injection valve group prying block 33 includes a plurality of branch pipes 330, the branch pipes 330 are arranged in parallel, and each branch pipe 330 is provided with a flow meter 2321 and a flow valve 42. The water on the main pipe can be divided into a plurality of branch pipes, so that the plurality of mixed injection allocation pry blocks 1 can be correspondingly arranged.

In conclusion, the nitrogen injection skid realizes the generation and pressurization of nitrogen through the gas injection subsystem, realizes the dosing and pressurization of water through the liquid injection subsystem, then reaches the mixing injection allocation skid block 1 for mixing, can keep the functions of independent gas injection and independent liquid injection, and can adapt to various working conditions.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A gas-liquid mixed foam flooding system, comprising:

2. The gas-liquid mixed foam flooding system according to claim 1, characterized in that: the gas injection valve group prying block is communicated with the mixed injection allocation prying block through at least two gas injection pipes, the liquid injection valve group prying block is communicated with the mixed injection allocation prying block through at least two liquid injection pipes, the mixed injection allocation prying block is provided with at least two, and the quantity of the mixed injection allocation prying blocks is matched with that of the gas injection pipes and the liquid injection pipes.

3. The gas-liquid mixed foam flooding system according to claim 2, characterized in that: the gas injection pipe with all be equipped with the check valve on the notes liquid pipe, just the both sides of check valve all are equipped with the flow valve, the flow valve is used for controlling the flow size of gas or liquid.

4. The gas-liquid mixed foam flooding system according to claim 3, characterized in that: the gas injection pipe with annotate the liquid and all parallelly connected on the pipe have by-pass pipe, the check valve with the pipeline at flow valve place with the by-pass pipe is parallelly connected, be equipped with the flow valve on the by-pass pipe.

5. The gas-liquid mixed foam flooding system according to claim 1, characterized in that: the stirring pry block comprises two stirring tanks which are arranged in parallel.

6. The gas-liquid mixed foam flooding system according to claim 1, characterized in that: and a filtering system is arranged in front of the nitrogen making pry block.

7. The gas-liquid mixed foam flooding system according to claim 6, characterized in that: the filtering system sequentially comprises a screw air compressor, a first air buffer tank, an essential oil filter, a cooling dryer, a dust filtering group and a second air buffer tank.

8. The gas-liquid mixed foam flooding system according to claim 1, characterized in that: the nitrogen making skid block comprises a nitrogen making unit and a nitrogen buffer tank, wherein the nitrogen making unit comprises at least two parallel adsorption towers.

9. The gas-liquid mixed foam flooding system according to claim 1, characterized in that: the gas injection valves skid piece includes a plurality of bronchus, the bronchus sets up in parallel, every all be equipped with flowmeter and flow valve on the bronchus.

10. The gas-liquid mixed foam flooding system according to claim 1, characterized in that: annotate liquid valves sled piece includes a plurality of branch liquid pipes, branch liquid pipe connects in parallel and sets up, every all be equipped with flowmeter and flow valve on the branch liquid pipe.