CN214886985U - Skid-mounted separation metering device for medium-low pressure natural gas cluster well group - Google Patents
Skid-mounted separation metering device for medium-low pressure natural gas cluster well group Download PDFInfo
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- CN214886985U CN214886985U CN202022872587.9U CN202022872587U CN214886985U CN 214886985 U CN214886985 U CN 214886985U CN 202022872587 U CN202022872587 U CN 202022872587U CN 214886985 U CN214886985 U CN 214886985U
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Abstract
The utility model discloses a well low pressure natural gas cluster well group sled dress formula separation metering device, including high-low pressure urgent cutting device, electronic many lead to valves, natural gas metering device, liquid metering device, gas-liquid separation device, emptying devices, production manifold etc.. The emergency cutting-off device is characterized in that each gas well of the cluster well group is provided with a set of high-low pressure emergency cutting-off device, and all the well mouth high-low pressure emergency cutting-off devices are communicated with the electric multi-way valve group; the electric multi-way valve group is respectively communicated with the gas-liquid separation device and the production manifold; the gas-liquid separation device is respectively communicated with the natural gas metering device, the liquid metering device and the emptying device; the output ends of the natural gas metering device and the liquid metering device are communicated with a production manifold. The device is suitable for cluster well groups with low medium and low pressure and liquid content, and has the characteristics of small occupied area, low investment, high metering accuracy and simple process.
Description
Technical Field
The utility model relates to a defeated technical field of natural gas collection, concretely relates to well low pressure natural gas cluster well group sled dress formula separation metering device.
Background
For cluster well groups, the existing metering method mainly comprises: (1) the well mouth does not measure, and the gas collecting station separates and measures after collecting gas; (2) well mouth miscible phase measurement, separating and measuring after gas collection of the gas collecting station; (3) and (4) establishing a well site gas gathering station for separation and metering. The method (1) cannot accurately measure the gas production of each well, and is not beneficial to the real-time monitoring of the gas production at the well head; in the method (2), when the mixed phase measurement is carried out at the wellhead, the liquid in the natural gas has great influence on the measurement accuracy, the data of the separated liquid amount in the rear-end gas collecting station is needed to be used for calibrating the mixed phase flowmeter, the calibration difficulty is great, and the accuracy rate is low; the method (3) has complex process, more required process equipment, more matched specialties, larger construction investment and occupied area, and is suitable for cluster well groups with wide fields, high gas production and higher liquid content.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a separation metering device that is applicable to well low pressure cluster well group, the liquid content is lower, area is little, the investment is lower, the measurement degree of accuracy is higher, technology is simple relatively.
In order to realize the purpose, the utility model provides a technical scheme is:
a skid-mounted separation metering device for a medium-low pressure natural gas cluster well group comprises a plurality of high-low pressure emergency cut-off devices, an electric multi-way valve group, a natural gas metering device, a liquid metering device, a gas-liquid separation device, an emptying device and a production header which are arranged in parallel; the high-low pressure emergency cut-off devices are all connected with the electric multi-way valve bank; the electric multi-way valve group is respectively connected with the gas-liquid separation device and the production manifold; the liquid metering device is connected with a liquid outlet of the gas-liquid separation device; the natural gas metering device is connected with a gas outlet of the gas-liquid separation device; the emptying device is connected with an emptying outlet of the gas-liquid separation device; and the production header is connected with the output ends of the natural gas metering device and the liquid metering device.
Further, the high-low pressure emergency cut-off device comprises a high-low pressure emergency cut-off valve.
Further, the electric multi-way valve group comprises an electric multi-way valve, a first ball valve, a second ball valve and a control device; the electric multi-way valve is connected with the high-low pressure emergency cut-off devices; the electric multi-way valve group is communicated with the production header through the first ball valve and is communicated with the gas-liquid separation device through the second ball valve.
Further, the natural gas metering device comprises a third ball valve, a precession vortex flowmeter, a fourth ball valve and an exhaust valve; the third ball valve and the fourth ball valve are respectively arranged at the front end and the rear end of the natural gas metering device; the precession vortex flowmeter is disposed between the third ball valve and the fourth ball valve; the exhaust valve is arranged on a pipeline between the third ball valve and the precession vortex flowmeter.
Further, the liquid metering device comprises a drain valve, a fifth ball valve, a vortex shedding flowmeter, a sixth ball valve and a drain valve; the fifth ball valve and the sixth ball valve are arranged at two ends of the vortex shedding flowmeter; a drain valve is connected on a pipeline between the fifth ball valve and the vortex shedding flowmeter; the drain valve is arranged at the front end of the fifth ball valve.
Further, the gas-liquid separation device comprises a gas-liquid separator; the bottom end of the gas-liquid separator is provided with a sewage draining outlet, and a sewage draining valve is arranged on a pipeline outside the sewage draining outlet.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses can realize the separation of multi-well formula cluster well group and take turns the measurement, the gas-liquid separation measurement can improve the degree of accuracy of measurement, thereby the quantity saving of the reducible flowmeter of measurement takes up an area of and invests in turn, can realize the real time monitoring of gas field gas production. The device is a skid-mounted device, has good flexibility and can be repeatedly used.
Drawings
Fig. 1 is a schematic structural diagram of a skid-mounted separation metering device for a medium-low pressure natural gas cluster well of the present invention;
fig. 2 is a schematic structural diagram of the high-low pressure emergency cut-off device of the present invention;
FIG. 3 is a schematic structural view of the electric multi-way valve set of the present invention;
FIG. 4 is a schematic structural diagram of the natural gas metering device of the present invention;
FIG. 5 is a schematic structural view of the liquid metering device of the present invention;
FIG. 6 is a schematic structural view of the gas-liquid separator of the present invention;
fig. 7 is a schematic structural diagram of the emptying device of the present invention.
Detailed Description
As shown in fig. 1-7, a skid-mounted separation metering device for medium and low pressure natural gas cluster well group comprises a plurality of high and low pressure emergency cut-off devices 1, an electric multi-way valve group 2, a natural gas metering device 3, a liquid metering device 4, a gas-liquid separation device 5, a venting device 6 and a production manifold 7 which are arranged in parallel; the high-low pressure emergency cut-off devices 1 are all connected with the electric multi-way valve group 2; the electric multi-way valve group 2 is respectively connected with the gas-liquid separation device 5 and the production manifold 7; the liquid metering device 4 is connected with a liquid outlet of the gas-liquid separation device 5; the natural gas metering device 3 is connected with a gas outlet of the gas-liquid separation device 5; the emptying device 6 is connected with an emptying outlet of the gas-liquid separation device 5; the production header 7 is communicated with the output ends of the natural gas metering device 3 and the liquid metering device 4.
Further, the high-low pressure emergency cut-off device 1 includes a high-low pressure emergency cut-off valve 102. After the natural gas at each well mouth is produced, the natural gas is communicated with the high-low pressure emergency cut-off device 1 through a flange, when a certain path of natural gas exceeds a set high pressure or is lower than a set low pressure, the automatic cut-off can be realized through the high-low pressure emergency cut-off valve 102, and the equipment damage is avoided.
Further, the electric multi-way valve group 2 comprises an electric multi-way valve 201, a first ball valve 202, a second ball valve 203 and a control device; the electric multi-way valve 201 is connected with the high-low pressure emergency cut-off devices 1; the electric multi-way valve group 2 is communicated with the production header 7 through the first ball valve 202 and is communicated with the gas-liquid separation device 5 through the second ball valve 203. The control device matched with the electric multi-way valve group 2 can realize alternate metering of a plurality of wellhead output products by controlling the switch of the electric multi-way valve, the output of one gas well is metered every time, the output of other three ports is not metered, and the next gas well is switched at intervals.
Further, the natural gas metering device 3 comprises a third ball valve 301, a precession vortex flow meter 303, a fourth ball valve 305 and an exhaust valve 306; the third ball valve 301 and the fourth ball valve 305 are respectively arranged at the front end and the rear end of the natural gas metering device 3; the precession vortex flowmeter 303 is disposed between the third ball valve 301 and the fourth ball valve 305; the exhaust valve 306 is disposed on a pipeline between the third ball valve 301 and the precession vortex flowmeter 303. The front end of the natural gas metering device 3 is communicated with a gas outlet of the gas-liquid separation device 5, and the rear end of the natural gas metering device is communicated with the output end of the liquid metering device 4 and then is merged into the production manifold 7. The natural gas metering device 3 has the main function of metering separated natural gas, when the precession vortex flowmeter 303 is overhauled, the ball valve 301 and the ball valve 305 are closed, and the precession vortex flowmeter 303 is disassembled and overhauled after air is discharged through the exhaust valve 306.
Further, the liquid metering device 4 comprises a drain valve 401, a fifth ball valve 402, a vortex shedding flowmeter 403, a sixth ball valve 404 and a drain valve 405; the fifth ball valve 402 and the sixth ball valve 404 are arranged at two ends of the vortex shedding flowmeter 403; a drain valve 405 is connected on a pipeline between the fifth ball valve 402 and the vortex flowmeter 403; the trap 401 is disposed at a front end of the fifth ball valve 402. The front end of the liquid metering device 4 is communicated with the liquid outlet of the gas-liquid separator 5, and the rear end of the liquid metering device is communicated with the output end of the gas metering device 3 and then is merged into the production manifold 7. The liquid metering device 4 is used for metering the separated liquid, and when the vortex flowmeter 403 is screwed in for maintenance, the ball valves 402 and 404 are closed, and the vortex flowmeter 403 is disassembled and maintained after liquid is discharged through the liquid discharge valve 405.
Further, the gas-liquid separation device 5 includes a gas-liquid separator 502; the bottom end of the gas-liquid separator 502 is provided with a sewage draining outlet, and a pipeline outside the sewage draining outlet is provided with a sewage draining valve 503. The front end of the gas-liquid separation device 5 is communicated with the electric multi-way valve group 2, and the rear end is respectively communicated with the natural gas metering device 3, the liquid metering device 4 and the emptying device 6, and the gas-liquid separation device has the function of realizing gas-liquid separation. The discharge of solid or liquid impurities in the gas-liquid separator 502 can be controlled by controlling the opening and closing of the blowoff valve 503.
Further, the emptying device 6 comprises a throttling cut-off emptying valve 605, a seventh ball valve 601, a safety valve 602 and an eighth ball valve 603; the throttle cut-off vent valve 605 is connected with an external structure through a flange interface 604; the relief valve 602 is disposed between the seventh ball valve 601 and the eighth ball valve 603; the front end of the emptying device 6 is communicated with the gas-liquid separation device 5, and the emptying device has the function of realizing overpressure emptying; manual venting may be achieved by throttling the cut-off vent valve 605. The safety valve 602 is provided to prevent overpressure of the gas-liquid separation device by discharging natural gas to the outside of the system when the pressure of the gas-liquid separation device 5 exceeds a prescribed value; when the safety valve is overhauled or checked, the automatic vent line is shut off by closing the seventh ball valve 601 and the eighth ball valve 603 so that the safety valve is disassembled.
The utility model discloses a work flow does, after the natural gas of well head extraction got into through the urgent cutting device of high-low pressure, then get into gas-liquid separation through electronic many lead valves, the gas of separation got into natural gas metering device through gas outlet and measures, the liquid of separation got into liquid metering device through liquid outlet and measures, gas after metering through natural gas metering device and liquid after metering through liquid metering device collect the back at the output and get into the production manifold, export gas outward through the production manifold.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A skid-mounted separation metering device for a medium-low pressure natural gas cluster well group is characterized by comprising a plurality of high-low pressure emergency cut-off devices (1), electric multi-way valve groups (2), a natural gas metering device (3), a liquid metering device (4), a gas-liquid separation device (5), a venting device (6) and a production manifold (7) which are arranged in parallel; the high-low pressure emergency cut-off devices (1) are connected with the electric multi-way valve bank (2); the electric multi-way valve group (2) is respectively connected with the gas-liquid separation device (5) and the production manifold (7); the liquid metering device (4) is connected with a liquid outlet of the gas-liquid separation device (5); the natural gas metering device (3) is connected with a gas outlet of the gas-liquid separation device (5); the emptying device (6) is connected with an emptying outlet of the gas-liquid separation device (5); and the production header (7) is connected with the output ends of the natural gas metering device (3) and the liquid metering device (4).
2. The medium and low pressure natural gas cluster well package skid-mounted separation metering device of claim 1, characterized in that the high and low pressure emergency shut-off device (1) comprises a high and low pressure emergency shut-off valve (102).
3. The skid-mounted separation metering device for the middle and low pressure natural gas cluster well group according to claim 1, wherein the electric multi-way valve group (2) comprises an electric multi-way valve (201), a first ball valve (202), a second ball valve (203) and a control device; the electric multi-way valve (201) is connected with the high-low pressure emergency cut-off devices (1); the electric multi-way valve group (2) is communicated with the production header (7) through the first ball valve (202) and is communicated with the gas-liquid separation device (5) through the second ball valve (203).
4. The skid-mounted separation metering device for medium and low pressure natural gas cluster wells as claimed in claim 1, wherein the natural gas metering device (3) comprises a third ball valve (301), a precession vortex flow meter (303), a fourth ball valve (305), and an exhaust valve (306); the third ball valve (301) and the fourth ball valve (305) are respectively arranged at the front end and the rear end of the natural gas metering device (3); the precession vortex flowmeter (303) is disposed between the third ball valve (301) and the fourth ball valve (305); the exhaust valve (306) is arranged in line between the third ball valve (301) and the precession vortex flowmeter (303).
5. The skid-mounted separation metering device for the middle and low pressure natural gas cluster well group according to claim 1, wherein the liquid metering device (4) comprises a drain valve (401), a fifth ball valve (402), a vortex shedding flowmeter (403), a sixth ball valve (404) and a drain valve (405); the fifth ball valve (402) and the sixth ball valve (404) are arranged at two ends of the vortex shedding flowmeter (403); a drain valve (405) is connected on a pipeline between the fifth ball valve (402) and the vortex shedding flowmeter (403); the steam trap (401) is arranged at the front end of the fifth ball valve (402).
6. The skid-mounted separation metering device for medium and low pressure natural gas cluster wells as claimed in claim 1, wherein the gas-liquid separation device (5) comprises a gas-liquid separator (502); the bottom end of the gas-liquid separator (502) is provided with a sewage draining outlet, and a pipeline outside the sewage draining outlet is provided with a sewage draining valve (503).
7. The skid-mounted separation metering device for the middle and low pressure natural gas cluster well group according to claim 1, wherein the emptying device (6) comprises a throttling cut-off emptying valve (605), a seventh ball valve (601), a safety valve (602) and an eighth ball valve (603); the throttling cut-off emptying valve (605) is connected with an external structure through a flange interface (604); the safety valve (602) is arranged between a seventh ball valve (601) and the eighth ball valve (603); the front end of the emptying device (6) is communicated with the gas-liquid separation device (5), and the emptying device has the function of realizing overpressure emptying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022872587.9U CN214886985U (en) | 2020-12-04 | 2020-12-04 | Skid-mounted separation metering device for medium-low pressure natural gas cluster well group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022872587.9U CN214886985U (en) | 2020-12-04 | 2020-12-04 | Skid-mounted separation metering device for medium-low pressure natural gas cluster well group |
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| Publication Number | Publication Date |
|---|---|
| CN214886985U true CN214886985U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022872587.9U Active CN214886985U (en) | 2020-12-04 | 2020-12-04 | Skid-mounted separation metering device for medium-low pressure natural gas cluster well group |
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| Country | Link |
|---|---|
| CN (1) | CN214886985U (en) |
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- 2020-12-04 CN CN202022872587.9U patent/CN214886985U/en active Active
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