CN220059520U - Shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities - Google Patents
Shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities Download PDFInfo
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- CN220059520U CN220059520U CN202321701302.2U CN202321701302U CN220059520U CN 220059520 U CN220059520 U CN 220059520U CN 202321701302 U CN202321701302 U CN 202321701302U CN 220059520 U CN220059520 U CN 220059520U
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- 238000000605 extraction Methods 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 abstract description 135
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 18
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 239000003345 natural gas Substances 0.000 abstract description 9
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The utility model relates to the field of natural gas compressors, in particular to a shale gas pressurization system with pressurization gas lifting and negative pressure extraction capabilities, which comprises a compressor and a well group, wherein the well group comprises a first well group and a second well group, the well group is connected with the compressor through a gas lifting system and the negative pressure extraction system respectively, and the gas lifting system comprises a first well group, a second well group, a third well group, a fourth well group, a fifth well group, a sixth well group, a seventh well group, a fifth well group, a sixth well group, a seventh well group and a seventh well group: well group one end is connected with the interwell gas lift pipeline, and the interwell gas lift pipeline other end is connected with the gas transmission pipeline, is connected with the compressor through the gas transmission pipeline, and the compressor still is equipped with the admission line, communicates with the gas transmission pipeline through the compressor, and the admission line other end is equipped with and adopts defeated flow process zone, negative pressure extraction system: the other end of the well group is connected with an air exhaust pipeline, the air exhaust pipeline is connected with the other end of the air inlet pipeline and is communicated with the compressor through the air inlet pipeline, the compressor is provided with a pressurizing external pipeline, the pressurizing external pipeline is communicated with the air inlet pipeline through the compressor, the other end of the pressurizing external pipeline is connected with a production process area, and the functions of gas lift and negative pressure extraction can be realized by one compressor.
Description
Technical Field
The utility model relates to the field of natural gas compressors, in particular to a shale gas pressurization system with pressurization gas lifting and negative pressure extraction capabilities.
Background
By combining the development current situation and the hydrops degree of shale gas and carrying out multi-aspect demonstration and feasibility research, the liquid drainage and gas production process requirement taking pressurized gas lifting as a main and negative pressure extraction as an auxiliary is formed.
The existing compression system is an independent pressurization system, 1 compressor of a station yard can only boost gas lift or can only extract negative pressure, and at present, the station yard needs to realize 2 functions of gas lift and extraction simultaneously, and then 1 booster gas lift compressor and 1 negative pressure extraction compressor are needed at the same time, so that the following problems exist:
1. the station 1 compressor can only carry out pressurized gas lift or negative pressure extraction, and if two compressors are needed to meet the two functions at the same time, the cost is increased;
2. the existing shale gas pressurized exploitation device cannot monitor the air flow in the pipeline.
3. The existing negative pressure extraction system only meets the requirement of pressurizing an outbound air source and then outputting the air, but does not meet the requirement of carrying out negative pressure extraction on a single well.
Disclosure of Invention
The utility model aims at: aiming at the problems that the compression system in the prior art is a single pressurization system, two compressors are needed to meet the two functions simultaneously, the cost is increased, and the negative pressure extraction of a single well is not met, the shale gas pressurization system with the pressurization gas lifting and the negative pressure extraction capability is provided.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities comprises a compressor and a well group, wherein the well group comprises a first well group and a second well group, the well group is connected with the same compressor through a gas lifting system and a negative pressure extraction system respectively, and the gas lifting system and the negative pressure extraction system are respectively;
gas lift system: one end of the well group is connected with an inter-well gas lift pipeline, the other end of the inter-well gas lift pipeline is connected with a gas pipeline and is connected with the compressor through the gas pipeline, the compressor is also provided with a gas inlet pipeline and is communicated with the gas pipeline through the compressor, and the other end of the gas inlet pipeline is connected with a production and transportation process area;
negative pressure extraction system: the well group other end is connected with the exhaust pipe, the exhaust pipe with the other end of intake pipe is connected, and through the intake pipe with the compressor intercommunication, be equipped with the pressure boost defeated pipeline outward on the compressor, the pressure boost defeated pipeline passes through the compressor with the intake pipe intercommunication, the pressure boost defeated pipeline other end is connected with the technological district of production and transportation flow.
The utility model relates to a shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capability, wherein the gas lifting system supplies gas to an air inlet pipeline through a process area of a gas production and transportation flow process, when the gas flows to a compressor through the air inlet pipeline, the gas is pressurized and then is transported through the air inlet pipeline, and gas lifting pipelines connected with the air inlet pipeline among wells of the shale gas pressurizing system flow to all wells in a well group.
As a preferable scheme of the utility model, a first valve is arranged at the joint of the gas transmission pipeline and the inter-well gas lift pipeline arranged in the gas lift system, and a fifth valve and a flowmeter are sequentially arranged between the gas transmission pipeline and the production process zone, and the first valve is arranged to avoid gas flow.
As a preferred aspect of the present utility model, the inter-well gas lift lines comprise a first inter-well gas lift line connecting the first well group and a second inter-well gas lift line connecting the second well group such that each line is in parallel with a well.
As a preferred aspect of the present utility model, the first inter-well gas lift pipe is connected in parallel with the first well group, and the second inter-well gas lift pipe is connected in parallel with the second well group.
As a preferred scheme of the utility model, the pressurizing output pipeline arranged in the negative pressure extraction system comprises a first negative pressure extraction pipeline and a second negative pressure extraction pipeline, the first negative pressure extraction pipeline is connected with the first well group in parallel, and the second negative pressure extraction pipeline is connected with the second well group in parallel, so that the extraction system can realize negative pressure extraction.
As a preferable scheme of the utility model, second valves are arranged between the first negative pressure extraction pipelines and the first well groups correspondingly connected with the first negative pressure extraction pipelines, second valves are arranged between the second negative pressure extraction pipelines and the second well groups correspondingly connected with the second negative pressure extraction pipelines, and the first negative pressure extraction pipelines are communicated with the second negative pressure extraction pipelines, so that operators can control gas circulation between each well and the corresponding pipeline.
As a preferred embodiment of the present utility model, a fourth valve is provided between the suction duct and the intake duct, so that an operator can control the gas communication between the suction duct and the intake duct.
As a preferable scheme of the utility model, a third valve is arranged between the pressurizing output pipeline and the production process zone, so that an operator can control the gas communication between the pressurizing output pipeline and the production process zone.
As a preferable scheme of the utility model, the gas lift system and the negative pressure extraction system share the same process area, the flowmeter and the compressor of the extraction and transportation process, so that the extraction system can realize both pressurized gas lift and negative pressure extraction.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. the shale gas pressurizing system with pressurizing gas lifting and negative pressure extracting capabilities is characterized in that a gas pipeline, a gas inlet pipeline and a pressurizing external pipeline are arranged on a compressor, one end of the gas pipeline is connected with a gas lifting gas injection pipeline, one end of the gas lifting gas injection pipeline is connected with a well group, a fifth valve is opened through a fourth valve which is closed, so that natural gas in a production process area is conveyed into the compressor to be compressed through the gas inlet pipeline, the first valve is opened to convey the natural gas in the compressor into the well group through a first gas inlet pipeline and an inter-well gas lifting pipeline to realize inter-well gas lifting, the second valve and the fourth valve can be opened, so that gas in the well group is conveyed into the compressor to be compressed through the gas suction pipeline and the gas inlet pipeline, the first valve is closed, the gas is conveyed to the pressurizing external pipeline from the compressor, and then a third valve is opened, so that the gas is conveyed to the production process area through the pressurizing external pipeline, negative pressure extracting is realized, the gas in the compressor is conveyed to the production process area through the first valve, the pumping gas in the compressor and the two compressors are not needed, and the pressurizing functions are saved.
2. The shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities is characterized in that a flowmeter is arranged on an air inlet pipeline, so that an operator can monitor the gas flow in the air inlet pipeline.
Drawings
FIG. 1 is a schematic view of a pipe arrangement of the present utility model;
FIG. 2 is a schematic illustration of the well group and tubing connection of the present utility model;
figure 3 is a schematic diagram of the piping connections of the gas lift system of the present utility model.
Icon: 1-a compressor; 2-gas transmission pipelines; 3-interwell gas lift lines; 4-well group; 5-an air extraction pipeline; 6-a second valve; 7-pressurizing an output pipeline; 8-an air inlet pipeline; 9-a process area of a mining and transportation flow; 11-a flow meter; 12-a first valve; 13-a third valve; 14-fourth valve; 15-a fifth valve; 31-a first inter-well gas lift conduit; 32-a second inter-well gas lift conduit; 41-a first well group; 42-a second well group; 51-a first negative pressure extraction pipeline; 52-a second negative pressure extraction pipeline.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
As shown in fig. 1 and 2, the shale gas pressurizing system with pressurizing gas lifting and negative pressure extracting capabilities is provided with two pipelines which are respectively a gas lifting system and a negative pressure extracting system and are connected with the same compressor 1 and well group 4;
gas lift system: the gas pipeline 2 and the gas inlet pipeline 8 are arranged on the compressor 1, the gas inlet pipeline 8 is connected with a production and transportation process zone 9, the gas pipeline 2 is connected with the inter-well gas lift pipeline 3, and the inter-well gas lift pipeline 3 is respectively connected with a first well group 41 and a second well group 42 in the well group 6;
an air inlet pipeline 8 is arranged between a production and transportation process area 9 and the compressor 1 in the system, natural gas in the production and transportation process area 9 is conveyed to the compressor 1 for compression through the air inlet pipeline 8, the compressed natural gas is conveyed to an interwell gas lift pipeline 3 through a gas conveying pipeline 2, and the natural gas is conveyed to a well group 4 through the interwell gas lift pipeline 3, so that the process of interwell gas lift is completed;
a negative pressure extraction system; the air extraction pipelines 5 are sequentially connected to each well group 4, the air extraction pipelines 5 are connected with one end of an air inlet pipeline 8, the air inlet pipeline 8 is connected with a pressurizing output pipeline 7 through the compressor 1, and the other end of the pressurizing output pipeline 7 is connected with a production and transmission process zone 9;
the negative pressure extraction in the system is that natural gas in the well group 4 is conveyed to the compressor 1 for compression through the air extraction pipeline 5 and the air inlet pipeline 8 communicated with the air extraction pipeline 5, and the compressed natural gas is conveyed to the extraction and transportation process area 9 through the pressurizing output pipeline 7, so that the negative pressure extraction process is completed;
in summary, the pipeline is connected to the same compressor, so that the two functions of pressurizing gas lifting and negative pressure extraction can be completed by only one compressor in the actual use process, and the cost is reduced.
The connection part of the gas transmission pipeline 2 and the inter-well gas lifting pipeline 3, which are arranged in the gas lifting pipeline, is provided with a first valve 12, and a fifth valve 15 and a flowmeter 11 are sequentially arranged between the gas inlet pipeline 8 and the production process area 9, so that after the first valve 12 is closed, the gas in the inter-well gas lifting pipeline 3 cannot flow into or flow out of the gas inlet pipeline 8, and the inter-well gas lifting pipeline 3 and the supercharging external pipeline 5 are communicated with the gas inlet pipeline 8, so that the first valve 12 is closed in the function of negative pressure extraction, so that the gas cannot flow into the inter-well gas lifting pipeline 3 in the process of negative pressure extraction, and the negative pressure extraction cannot be completed, as shown in fig. 3.
The above-mentioned inter-well gas lift pipeline 3 comprises a first inter-well gas lift pipeline 31 and a second inter-well gas lift pipeline 32, wherein the first inter-well gas lift pipeline 31 is connected with the first well group 41, and the second inter-well gas lift pipeline 32 is connected with the second well group 42, so that the inter-well gas lift pipeline 3 can carry out gas delivery on a plurality of or a plurality of square well groups 4 when carrying out gas delivery, as shown in fig. 3.
The first inter-well gas lift pipe 31 is connected in parallel with the first well group 41, and the second inter-well gas lift pipe 32 is connected in parallel with the second well group 42, as shown in fig. 1.
The pressurizing external pipeline 7 arranged in the negative pressure extraction pipeline comprises a first negative pressure extraction pipeline 51 and a second negative pressure extraction pipeline 52, the first negative pressure extraction pipeline 51 is connected with the first well group 41 in parallel, and the second negative pressure extraction pipeline 52 is connected with the second well group 42 in parallel, so that the pressurizing external pipeline 7 can extract and collect the gas of a plurality of positions or a plurality of well groups, as shown in fig. 1.
The second valves 6 are respectively disposed between the first negative pressure extraction pipes 51 and the first well groups 41 correspondingly connected with the first negative pressure extraction pipes, the second valves 6 are respectively disposed between the second negative pressure extraction pipes 52 and the second well groups 42 correspondingly connected with the second negative pressure extraction pipes, and the first negative pressure extraction pipes 51 are communicated with the second negative pressure extraction pipes 52, so that operators can control gas circulation between each well and the corresponding pipe by themselves, as shown in fig. 1.
The fourth valve 14 is disposed between the air suction pipe 5 and the air intake pipe 8, so that when the air suction pipe 5 and the air intake pipe 8 are controlled to circulate by opening and closing the fourth valve 14, the air in the air intake pipe 8 can be prevented from entering the air suction pipe 5 when the air is lifted by pressurizing, as shown in fig. 3.
The third valve 13 is disposed between the pressurizing output pipeline 7 and the process area 9 of the production flow, and the gas transmission between the pressurizing output pipeline 7 and the process area 9 of the production flow can be controlled by opening and closing the third valve 13, and the gas in the process area 9 of the production flow can be prevented from escaping from the pressurizing output pipeline 7 when the pressurizing gas is lifted by closing the third valve 13, so that the pressurizing gas lift cannot be performed, as shown in fig. 3.
The gas lift system and the negative pressure extraction system share the same extraction process area 9, flow meter 11 and compressor 1, as shown in fig. 1.
The utility model relates to a shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities, wherein a pressurizing gas lifting function is used for feeding air through an air inlet pipeline 8, pressurizing the air when the air flows to a compressor 1, then conveying the air to each well in a well group 4 through an air conveying pipeline 2, and the negative pressure extraction is realized by conveying the air in the well group 4 to the air inlet pipeline 8 through an air suction pipeline 5, then conveying the air to a compressor 1 for pressurizing, conveying the pressurized air to an extraction flow process area 9 through a pressurizing output pipeline, and realizing the two functions of pressurizing gas lifting and negative pressure extraction by using only one compressor 1 by connecting the two pipelines with the compressor 1 and the well group 4.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (9)
1. The shale gas pressurizing system with pressurizing gas lifting and negative pressure extracting capabilities comprises a compressor (1) and a well group (4), and is characterized in that the well group (4) comprises a first well group (41) and a second well group (42), the well group (4) is connected with the same compressor (1) through a gas lifting system and a negative pressure extracting system respectively, and the specific gas lifting system and the negative pressure extracting system are respectively;
gas lift system: one end of the well group (4) is connected with an inter-well gas lift pipeline (3), the other end of the inter-well gas lift pipeline (3) is connected with a gas pipeline (2), the gas pipeline (2) is connected with the compressor (1), the compressor (1) is also provided with a gas inlet pipeline (8), the gas inlet pipeline (1) is communicated with the gas pipeline (2), and the other end of the gas inlet pipeline (8) is connected with a production and transportation process zone (9);
negative pressure extraction system: the well group (4) other end is connected with bleed pipeline (5), bleed pipeline (5) with the other end of admission line (8) is connected, and through admission line (8) with compressor (1) intercommunication, be equipped with pressure boost defeated pipeline (7) outward on compressor (1), pressure boost defeated pipeline (7) pass through compressor (1) with admission line (8) intercommunication, pressure boost defeated pipeline (7) other end is connected with adopts defeated flow technology district (9).
2. Shale gas pressurization system with pressurization gas lifting and negative pressure extraction capabilities according to claim 1, wherein a first valve (12) is arranged at the joint of a gas pipeline (2) and an inter-well gas lifting pipeline (3) arranged in the gas lifting system, and a fifth valve (15) and a flowmeter (11) are sequentially arranged between a gas inlet pipeline (8) and a production process zone (9).
3. Shale gas pressurization system with both pressurization gas lift and negative pressure extraction capabilities according to claim 1, characterized in that the inter-well gas lift line (3) comprises a first inter-well gas lift pipe (31) and a second inter-well gas lift pipe (32), the first inter-well gas lift pipe (31) being connected to the first well group (41), the second inter-well gas lift pipe (32) being connected to the second well group (42).
4. A shale gas pressurization system with both pressurized gas lift and negative pressure extraction capabilities as claimed in claim 3, wherein said first inter-well gas lift conduit (31) is connected in parallel with said first well group (41) and said second inter-well gas lift conduit (32) is connected in parallel with said second well group (42).
5. Shale gas pressurization system with both pressurization gas lifting and negative pressure extraction capabilities according to claim 1, characterized in that the pressurization output pipeline (7) arranged in the negative pressure extraction system comprises a first negative pressure extraction pipeline (51) and a second negative pressure extraction pipeline (52), the first negative pressure extraction pipeline (51) is connected in parallel with the first well group (41), and the second negative pressure extraction pipeline (52) is connected in parallel with the second well group (42).
6. The shale gas supercharging system with supercharging gas lifting and negative pressure extraction capabilities according to claim 5, wherein second valves (6) are arranged between the first negative pressure extraction pipelines (51) and the first well groups (41) which are correspondingly connected with the first negative pressure extraction pipelines, second valves (6) are arranged between the second negative pressure extraction pipelines (52) and the second well groups (42) which are correspondingly connected with the second negative pressure extraction pipelines, and the first negative pressure extraction pipelines (51) are communicated with the second negative pressure extraction pipelines (52).
7. Shale gas pressurization system with pressurization gas lifting and negative pressure extraction capabilities according to claim 1, characterized in that a fourth valve (14) is arranged between the air extraction pipeline (5) and the air intake pipeline (8).
8. Shale gas pressurization system with pressurization gas lifting and negative pressure extraction capabilities according to claim 1, characterized in that a third valve (13) is arranged between the pressurization output pipeline (7) and the extraction flow process zone (9).
9. Shale gas pressurization system with both pressurization gas lifting and negative pressure extraction capabilities according to claim 1, characterized in that the gas lifting system and the negative pressure extraction system share the same production flow process zone (9), flowmeter (11) and compressor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321701302.2U CN220059520U (en) | 2023-06-30 | 2023-06-30 | Shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321701302.2U CN220059520U (en) | 2023-06-30 | 2023-06-30 | Shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities |
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| Publication Number | Publication Date |
|---|---|
| CN220059520U true CN220059520U (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321701302.2U Active CN220059520U (en) | 2023-06-30 | 2023-06-30 | Shale gas pressurizing system with pressurizing gas lifting and negative pressure extraction capabilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220059520U (en) |
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2023
- 2023-06-30 CN CN202321701302.2U patent/CN220059520U/en active Active
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