CN215446037U - Gas well rotation metering gas collection system - Google Patents
Gas well rotation metering gas collection system Download PDFInfo
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- CN215446037U CN215446037U CN202121655390.8U CN202121655390U CN215446037U CN 215446037 U CN215446037 U CN 215446037U CN 202121655390 U CN202121655390 U CN 202121655390U CN 215446037 U CN215446037 U CN 215446037U
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Abstract
The utility model relates to the field of natural gas collection, and discloses a gas well alternate metering and gas collecting system which comprises a production unit, a metering unit and a gas inlet unit, wherein the production unit comprises a low-pressure production manifold, a high-pressure production manifold and a compressor, and the low-pressure production manifold is communicated with the compressor so as to discharge low-pressure gas in the low-pressure production manifold after the low-pressure gas is pressurized by the compressor; the outlet of the metering unit is respectively communicated with the low-pressure production manifold and the high-pressure production manifold; the gas inlet unit comprises at least one gas inlet pipe group, the gas inlet pipe group comprises a plurality of gas inlet main pipes used for being communicated with different gas wells and metering gas inlet branch pipes, high-pressure gas inlet branch pipes and low-pressure gas inlet branch pipes which are controllably communicated with the gas inlet main pipes, the metering gas inlet branch pipes are communicated with inlets of the metering unit, the high-pressure gas inlet branch pipes are communicated with the high-pressure production gathering pipe, and the low-pressure gas inlet branch pipes are communicated with the low-pressure production gathering pipe.
Description
Technical Field
The utility model relates to the field of natural gas collection, in particular to a gas well alternate metering gas collection system.
Background
The prior natural gas collection metering process has the following problems after a gas field enters a potential excavation production stage at the later development stage: the oil pressure of an old gas well is generally reduced, and the produced natural gas cannot enter a ground processing station for normal production; each gas well or every well corresponds a flowmeter and carries out single well continuous measurement, or the multiple wells carries out the periodic rotation measurement of multiwell through a flowmeter, and wherein, single well continuous measurement mode can lead to the cost higher, and the multiple wells rotation measurement mode can cause follow-up pipeline atmospheric pressure unbalance after the higher new well of oil pressure drops into current system measurement, can't get into the normal production of ground processing station.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the oil pressure of a new gas well and the oil pressure of an old gas well are different before and after metering and the new gas well and the old gas well are difficult to enter a ground processing station for normal production at balanced air pressure in the prior art, and provides a gas well rotation metering gas collection system.
In order to achieve the above object, the present invention provides a gas well shift metering gas collection system, comprising:
the production unit comprises a low-pressure production manifold, a high-pressure production manifold and a compressor, wherein the low-pressure production manifold is communicated with the compressor so as to discharge low-pressure gas in the low-pressure production manifold after the low-pressure gas is pressurized by the compressor;
the outlet of the metering unit is respectively communicated with the low-pressure production manifold and the high-pressure production manifold; and
the gas inlet unit, the gas inlet unit includes at least one air inlet pipe group, the air inlet pipe group including be used for with different gas wells intercommunication a plurality of advance a plurality of gas owner's of being responsible for and with a plurality of advance a plurality of measurement inlet branch pipes, high pressure inlet branch pipe and the low pressure inlet branch pipe of being responsible for controllable intercommunication, measurement inlet branch pipe with the entry intercommunication of measurement unit, high pressure inlet branch pipe with high pressure production manifold intercommunication, low pressure inlet branch pipe with low pressure production manifold intercommunication.
Optionally, the production unit further comprises a low pressure production separator and a high pressure production separator, an inlet of the low pressure production separator is communicated with the low pressure production manifold, an outlet of the low pressure production separator is communicated with an inlet of the compressor, and an inlet of the high pressure production separator is communicated with the high pressure production manifold.
Optionally, the low pressure production separator and the high pressure production separator each have a drain, the production unit further comprising a first drain and a second drain respectively in communication with the drains of the low pressure production separator and the high pressure production separator.
Optionally, the production unit further comprises a first production line and a second production line for communicating with a ground treatment station, the first production line communicating with the outlet of the compressor, the second production line communicating with the gas outlet of the high pressure production separator.
Optionally, the metering unit includes a metering separator and a flow meter, an inlet of the metering separator is communicated with the metering air inlet branch pipe, an air outlet of the metering separator is communicated with an inlet of the flow meter, and an outlet of the flow meter is respectively communicated with the low-pressure production manifold and the high-pressure production manifold.
Optionally, the gas well rotation metering gas collection system further comprises an emptying unit, and the emptying unit is respectively communicated with the metering unit and the production unit.
Optionally, the vent unit includes a first vent pipe, a second vent pipe, a third vent pipe and a fourth vent pipe, the first vent pipe is communicated with the metering separator, the second vent pipe is communicated with the high-pressure production separator, the third vent pipe is communicated with the low-pressure production separator, and the fourth vent pipe is communicated with the compressor.
Optionally, the air intake unit includes a low pressure air intake manifold, a high pressure air intake manifold and a plurality of air intake manifold groups, a plurality of low pressure air intake branch pipes of the air intake manifold groups communicate with the low pressure production manifold through the low pressure air intake manifold, and a plurality of high pressure air intake branch pipes of the air intake manifold groups communicate with the high pressure production manifold through the high pressure air intake manifold.
Optionally, the gas well shift metering gas collection system comprises a plurality of metering units, and the plurality of metering gas inlet branch pipes are respectively communicated with the plurality of metering units.
Optionally, valves for controlling the on-off of the pipelines are respectively arranged on the metering air inlet branch pipe, the high-pressure air inlet branch pipe and the low-pressure air inlet branch pipe.
By adopting the scheme, the gas well rotation metering and gas collecting system can simultaneously realize the functions of gas well rotation metering of different pressure systems, the function of entering a station (namely a ground processing station) after the gas of a low-pressure gas well enters the station after pressurization and the function of entering the station normally when the gas of a high-pressure gas well enters the station, and new and old gas wells can enter the ground processing station for normal production at balanced gas pressure before and after metering; in addition, the system also has the characteristics of flexibility, reliability, small occupied area and low investment cost.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of one embodiment of a gas well shift metering gas collection system of the present invention.
Description of the reference numerals
11-low pressure production manifold, 12-high pressure production manifold, 13-compressor, 14-low pressure production separator, 15-high pressure production separator, 16-first production pipeline, 17-second production pipeline, 18-first blowdown pipe, 19-second blowdown pipe, 20-valve, 21-main gas inlet pipe, 22-branch gas metering pipe, 23-branch gas high pressure gas inlet pipe, 24-branch gas low pressure gas inlet pipe, 25-low pressure gas inlet manifold, 26-high pressure gas inlet manifold, 31-separator metering, 32-flowmeter, 41-first vent pipe, 42-second vent pipe, 43-third vent pipe, 44-fourth vent pipe.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The utility model provides a gas well rotation metering gas collection system, which comprises:
the production unit comprises a low-pressure production manifold 11, a high-pressure production manifold 12 and a compressor 13, wherein the low-pressure production manifold 11 is communicated with the compressor 13 so as to discharge low-pressure gas in the low-pressure production manifold after the low-pressure gas is pressurized by the compressor 13;
a metering unit, the outlet of which is respectively communicated with the low-pressure production manifold 11 and the high-pressure production manifold 12; and
the gas inlet unit, the gas inlet unit includes at least one air inlet pipe group, the air inlet pipe group is including being used for being responsible for 21 and the measurement inlet branch pipe 22, the high pressure inlet branch pipe 23 and the low pressure inlet branch pipe 24 that are the controllable intercommunication of a plurality of air inlet main pipes 21 that communicate with different gas wells, measures inlet branch pipe 22 and measures the entry intercommunication of unit, and high pressure inlet branch pipe 23 communicates with high pressure production manifold 12, and low pressure inlet branch pipe 24 communicates with low pressure production manifold 11.
In the above description, the metering intake manifold 22, the high-pressure intake manifold 23, and the low-pressure intake manifold 24 of the intake pipe group are simultaneously in controllable communication with the plurality of intake main pipes 21, and the plurality of intake main pipes 21 are respectively in communication with different gas wells, for example, some of the intake main pipes are in communication with an old well with a low pressure, and some of the intake main pipes are in communication with a new well with a high pressure. In addition, the metering intake branch pipe 22, the high-pressure intake branch pipe 23 and the low-pressure intake branch pipe 24 are respectively in controllable communication with the intake main pipe 21, which means that gas coming from a gas well entering the intake main pipe 21 can selectively enter the metering intake branch pipe 22, the high-pressure intake branch pipe 23 or the low-pressure intake branch pipe 24 according to the requirement or the self pressure. In order to realize the controllable communication, valves 20 (see fig. 1) for controlling the on-off of the pipelines can be respectively arranged on the metering air inlet branch pipe 22, the high-pressure air inlet branch pipe 23 and the low-pressure air inlet branch pipe 24.
In the operation process of the system, gas coming from a gas well (such as natural gas) firstly enters the gas inlet main pipe 21 and then can be divided into two paths, wherein one path enters the metering unit through the metering gas inlet branch pipe 22 for metering gas amount, then enters the high-pressure production manifold 12 or the low-pressure production manifold 11 according to the pressure of the coming gas, the high-pressure gas entering the high-pressure production manifold 12 is directly output, and the low-pressure gas entering the low-pressure production manifold 11 enters the compressor 13 for compression and pressurization and then is output; the other path of the high-pressure gas enters the high-pressure production manifold 12 through the high-pressure gas inlet branch pipe 23 or enters the low-pressure production manifold 11 through the low-pressure gas inlet branch pipe 24 according to the pressure of the incoming gas, the high-pressure gas entering the high-pressure production manifold 12 is directly output, and the low-pressure gas entering the low-pressure production manifold 11 enters the compressor 13 to be compressed and pressurized and then output.
By adopting the scheme, the gas well rotation metering and gas collecting system can simultaneously realize the functions of gas well rotation metering of different pressure systems, the function of entering a station (namely a ground processing station) after the gas of a low-pressure gas well enters the station after pressurization and the function of entering the station normally when the gas of a high-pressure gas well enters the station, and new and old gas wells can enter the ground processing station for normal production at balanced gas pressure before and after metering; in addition, the system also has the characteristics of flexibility, reliability, small occupied area and low investment cost.
In the present invention, in the case that the air intake unit includes a plurality of air intake pipe groups, as shown in fig. 1, the air intake unit may further include a low pressure air intake manifold 25 and a high pressure air intake manifold 26, a plurality of low pressure air intake branch pipes 24 of the plurality of air intake pipe groups are communicated with the low pressure production manifold 11 through the low pressure air intake manifold 25 (that is, low pressure air of the plurality of low pressure air intake branch pipes 24 enters the low pressure air intake manifold 25 to be collected and then enters the low pressure production manifold 11), and a plurality of high pressure air intake branch pipes 23 of the plurality of air intake pipe groups are communicated with the high pressure production manifold 12 through the high pressure air intake manifold 26 (that is, high pressure air of the plurality of high pressure air intake branch pipes 23 enters the high pressure air intake manifold 26 to be collected and then enters the high pressure production manifold 12).
Correspondingly, the gas well shift metering gas collection system can comprise a plurality of metering units, and a plurality of metering gas inlet branch pipes 22 are respectively communicated with the plurality of metering units.
In the present invention, as shown in fig. 1, the production unit may further include a low pressure production separator 14 and a high pressure production separator 15, an inlet of the low pressure production separator 14 is communicated with the low pressure production manifold 11, an outlet of the low pressure production separator 14 is communicated with an inlet of the compressor 13, and an inlet of the high pressure production separator 15 is communicated with the high pressure production manifold 12. The low-pressure production separator 14 is used for separating gas from liquid in the low-pressure gas to separate liquid droplets carried in the low-pressure gas. The high-pressure production separator 15 is used for performing gas-liquid separation on the high-pressure gas to separate liquid droplets carried in the high-pressure gas.
In the present invention, as shown in fig. 1, the low pressure production separator 14 and the high pressure production separator 15 may respectively have a drain outlet, and the production unit may further include a first drain pipe 18 and a second drain pipe 19 respectively communicating with the drain outlets of the low pressure production separator 14 and the high pressure production separator 15 to discharge the separated liquid impurities. Wherein the first sewage draining pipe 18 and the second sewage draining pipe 19 can be connected with a sewage draining system in the ground processing station.
According to the utility model, as shown in fig. 1, the production unit may further comprise a first production line 16 and a second production line 17 for communicating with a ground treatment station, the first production line 16 communicating with the outlet of the compressor 13, the second production line 17 communicating with the outlet of the high-pressure production separator 15.
In the present invention, as shown in fig. 1, the metering unit may include a metering separator 31 and a flow meter 32, an inlet of the metering separator 31 is communicated with the metering intake branch pipe 22, an outlet of the metering separator 31 is communicated with an inlet of the flow meter 32, and an outlet of the flow meter 32 is communicated with the low pressure production manifold 11 and the high pressure production manifold 12, respectively. The metering separator 31 is used for gas-liquid separation of the incoming gas before metering by the flow meter 32, so as to improve the metering accuracy.
In the utility model, the gas well rotation metering gas collection system can also comprise an emptying unit, and the emptying unit can be respectively communicated with the metering unit and the production unit so as to ensure the normal and safe operation of the metering unit and the production unit.
Specifically, as shown in the embodiment of FIG. 1, the vent unit may include a first vent 41, a second vent 42, a third vent 43, and a fourth vent 44, the first vent 41 being in communication with the metering separator 31, the second vent 42 being in communication with the high pressure production separator 15, the third vent 43 being in communication with the low pressure production separator 14, and the fourth vent 44 being in communication with the compressor 13.
Wherein, the first vent pipe 41, the second vent pipe 42, the third vent pipe 43 and the fourth vent pipe 44 are respectively provided with a safety valve and are connected with an air release system in the ground processing station.
The process flow of the gas well shift metering gas collection system of the present invention is described in detail below with reference to fig. 1, and by taking the above group of gas inlet pipe groups as an example, it is assumed that the upper gas inlet main pipe 21 is communicated with a low-pressure gas well, and the lower gas inlet main pipe 21 is communicated with a high-pressure gas well (it is understood that, depending on the gas well development stage, the same gas well may be a low-pressure gas well or a high-pressure gas well):
two single wells are used for gas coming, low-pressure gas entering an upper gas inlet main pipe 21 firstly enters a metering separator 31 through a metering gas inlet branch pipe 22 to be separated and carried with liquid drops, then enters a flowmeter 32 to be metered in gas amount, then enters a low-pressure production manifold 11 to be further separated in a low-pressure production separator 14, and the separated gas enters a compressor 13 to be compressed and pressurized and then enters a ground processing station through a first production pipeline 16;
the high-pressure gas entering the lower gas inlet main pipe 21 firstly enters the high-pressure gas inlet manifold 26 through the high-pressure gas inlet branch pipe 23, then enters the high-pressure production separator 15 through the high-pressure production manifold 12 for gas-liquid separation, and then enters the ground processing station through the second production pipeline 17.
The gas well rotation metering gas collection system can realize dynamic management and fine management of the gas well.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the utility model. The utility model is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A gas well rotation metering gas collection system, comprising:
the production unit comprises a low-pressure production header (11), a high-pressure production header (12) and a compressor (13), wherein the low-pressure production header (11) is communicated with the compressor (13) so as to discharge low-pressure gas in the low-pressure production header after the low-pressure gas is pressurized by the compressor (13);
a metering unit, the outlet of which communicates with the low-pressure production manifold (11) and the high-pressure production manifold (12), respectively; and
the gas inlet unit, the gas inlet unit includes at least one air inlet pipe group, the air inlet pipe group including be used for with the different gas wells a plurality of gas of leading in charge (21) intercommunication and with a plurality of gas of leading in charge of the controllable intercommunication of (21) measurement inlet branch pipe (22), high pressure inlet branch pipe (23) and low pressure inlet branch pipe (24), measurement inlet branch pipe (22) with the entry intercommunication of measurement unit, high pressure inlet branch pipe (23) with high pressure production header (12) intercommunication, low pressure inlet branch pipe (24) with low pressure production header (11) intercommunication.
2. A gas well shift metering gas collection system according to claim 1 wherein the production unit further comprises a low pressure production separator (14) and a high pressure production separator (15), the inlet of the low pressure production separator (14) communicating with the low pressure production manifold (11), the outlet of the low pressure production separator (14) communicating with the inlet of the compressor (13), the inlet of the high pressure production separator (15) communicating with the high pressure production manifold (12).
3. A gas well shift metering gas collection system according to claim 2 wherein the low pressure production separator (14) and the high pressure production separator (15) each have a blowdown port, the production unit further comprising first (18) and second (19) blowdown conduits communicating with the blowdown ports of the low pressure production separator (14) and the high pressure production separator (15), respectively.
4. A gas well shift metering gas collection system according to claim 2 wherein the production unit further comprises a first production line (16) and a second production line (17) for communication with a surface treatment station, the first production line (16) communicating with the outlet of the compressor (13) and the second production line (17) communicating with the outlet of the high pressure production separator (15).
5. A gas well shift metering gas collection system according to claim 2 wherein the metering unit comprises a metering separator (31) and a flow meter (32), an inlet of the metering separator (31) communicating with the metering gas inlet branch pipe (22), an outlet of the metering separator (31) communicating with an inlet of the flow meter (32), and an outlet of the flow meter (32) communicating with the low pressure production manifold (11) and the high pressure production manifold (12), respectively.
6. A gas well shift metering gas collection system as claimed in claim 5 further comprising a venting unit in communication with the metering unit and the production unit, respectively.
7. A gas well rotation metering gas collection system according to claim 6, wherein the blow-down unit comprises a first blow-down pipe (41), a second blow-down pipe (42), a third blow-down pipe (43) and a fourth blow-down pipe (44), the first blow-down pipe (41) communicating with the metering separator (31), the second blow-down pipe (42) communicating with the high pressure production separator (15), the third blow-down pipe (43) communicating with the low pressure production separator (14), the fourth blow-down pipe (44) communicating with the compressor (13).
8. A gas well shift metering gas collection system according to any one of claims 1 to 7 wherein the gas inlet unit comprises a low pressure inlet manifold (25), a high pressure inlet manifold (26) and a plurality of inlet manifold blocks, a plurality of low pressure inlet manifolds (24) of the plurality communicating with the low pressure production manifold (11) through the low pressure inlet manifold (25) and a plurality of high pressure inlet manifolds (23) of the plurality communicating with the high pressure production manifold (12) through the high pressure inlet manifold (26).
9. A gas well shift metering gas collection system according to claim 8 and comprising a plurality of said metering units, with a plurality of said metering gas inlet manifolds (22) communicating with a respective plurality of said metering units.
10. A gas well shift metering gas collection system according to any one of claims 1 to 7, characterized in that valves (20) for controlling the on-off of the pipelines are respectively arranged on the metering gas inlet branch pipe (22), the high-pressure gas inlet branch pipe (23) and the low-pressure gas inlet branch pipe (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121655390.8U CN215446037U (en) | 2021-07-20 | 2021-07-20 | Gas well rotation metering gas collection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121655390.8U CN215446037U (en) | 2021-07-20 | 2021-07-20 | Gas well rotation metering gas collection system |
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| CN215446037U true CN215446037U (en) | 2022-01-07 |
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| CN202121655390.8U Active CN215446037U (en) | 2021-07-20 | 2021-07-20 | Gas well rotation metering gas collection system |
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