CN210564478U - Cluster well high-medium-pressure multi-well mixed series gas collection system - Google Patents
Cluster well high-medium-pressure multi-well mixed series gas collection system Download PDFInfo
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- CN210564478U CN210564478U CN201921009900.7U CN201921009900U CN210564478U CN 210564478 U CN210564478 U CN 210564478U CN 201921009900 U CN201921009900 U CN 201921009900U CN 210564478 U CN210564478 U CN 210564478U
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Abstract
The utility model relates to a gas well gas production technical field, in particular to high-medium pressure multi-well mixes series connection gas collection system. A cluster well high-medium pressure multi-well mixed series gas collection system comprises a high-pressure gas source well and a medium-pressure gas collection well; the high-pressure gas source well and the medium-pressure gas collecting well are respectively provided with corresponding oil pipes, oil sleeve annuluses, wellhead devices and gas collecting manifolds; the wellhead devices are connected with an external wellhead instillation alcohol injection system; the method is characterized in that: the gas collection manifold of the high-pressure gas source well is connected with a wellhead device of the medium-pressure gas collection well; an underground throttle is arranged in an oil pipe of the medium-pressure gas collecting well; and the gas collecting manifold of the medium-pressure gas collecting well is also connected with an external downstream gas collecting device. The utility model discloses the dynamic monitoring data of guarantee gas source well is taken smoothly, is effectively restrained the formation of gas collecting line hydrate, is improved the liquid carrying capacity of low yield gas well, very big reduction gas collection manufacturing cost, the security that increases the gas collection system, ensures the safe economical high-efficient operation of cluster well site gas collection system.
Description
Technical Field
The utility model relates to a gas well gas production technical field, in particular to high-medium pressure multi-well mixes series connection gas collection system.
Background
The natural gas collection process mainly comprises high-pressure gas collection and medium-low pressure gas collection, wherein the high-pressure gas collection ground throttling technology is a gas collection process technology that a single-well single-gas collection pipeline is generally adopted, an alcohol injection pipeline is independently laid, and the throttling is carried out to a medium-low pressure state after the heating is carried out on the ground by a heating device to collect gas; the medium and low pressure gas collection underground throttling technology is a gas production technology for throwing a throttler at a proper position in a shaft, throttling high-temperature and high-pressure gas to a medium and low pressure state, and collecting gas through the shaft and a ground pipeline.
High-pressure gas collection is carried out by laying a gas collection pipeline, an alcohol injection pipeline and a corresponding heating throttling device independently, so that the investment cost is high, on the other hand, various pipelines and the whole ground system need to bear a high-pressure state for a long time, the risk coefficient is large, when the high-pressure gas collection mode is adopted for gas collection, various testing instruments and tools can be put into the bottom of a well, the data recording of the gas well is facilitated, and the dynamic monitoring work of various gas wells at the later stage is easy to carry out; the medium-pressure gas collection utilizes the underground throttler to throttle high-temperature and high-pressure gas to a medium-pressure state, then utilizes stratum heat to heat the gas, and then gas collection is carried out, so that hydrate can be effectively prevented from being generated, the cost is saved, after the throttler is put in, various testing instruments cannot be put in the lower part of the throttler through a throttling nozzle, if testing is needed, the throttler must be taken out firstly, then related underground operation is carried out, various testing instruments are put into testing, the normal production of an underground throttling gas well is seriously influenced, the method is complex in operation procedure, high in cost and large in potential safety hazard, meanwhile, great difficulty is caused to dynamic monitoring and analyzing work of the gas well, in addition, the underground throttler of the medium-pressure gas collecting well needs to be replaced regularly, and the production.
The delay and safety gas field belongs to a low-hole compact sandstone gas reservoir, the average single-well natural capacity is low, the transformation cost is high, the delay and safety gas field is limited by the topography and the land in northern Shaanxi, a single-well field cluster well is mostly adopted for development, the traditional high-pressure gas collection and medium-pressure gas collection belong to two different gas collection systems, even if the well mouth distance of each single well of a cluster well site is very close, the gas collection can be carried out only by adopting an independent gas collection mode, so that the production input cost of the gas field is directly increased, good economic benefit cannot be obtained, various underground data can not be conveniently tested when the high-pressure gas collection is carried out, and the advantages of low input cost and low safety risk when the medium-pressure gas collection is carried out. In order to effectively realize the advantage complementation of two gas collection modes, ensure that a dynamic data recording channel is smooth, simultaneously reduce the use amount of a ground high-pressure manifold and an underground restrictor as much as possible and practically improve the economic benefit, a mixed gas collection system capable of realizing the advantage complementation of a high-pressure gas collection mode and a medium-pressure gas collection mode is imperatively sought.
Disclosure of Invention
In order to solve the current high pressure gas collection and the not enough of middling pressure gas collection system in the tight gas reservoir gas collection in-process of delay ann gas field, the utility model provides a cluster well high middling pressure multi-well mixes series connection gas collection system can ensure effective admission of all kinds of dynamic parameters such as temperature, pressure and corrosion parameter in the pit, can realize again that high temperature high pressure gas throttle in the pit heaies up, prevent that natural gas hydrate from forming, can also realize multi-well high pressure gas production, the gas collection mode that single pipeline middling pressure gas collection entered the station, greatly made things convenient for developing of dynamic monitoring work, various manufacturing cost have been reduced, the security of operation has been increased, in addition, can also improve the liquid carrying capacity of low yield gas well, effectively prevent the pit shaft hydrops.
The technical scheme of the utility model lies in:
a cluster well high-medium pressure multi-well mixed series gas collection system comprises a high-pressure gas source well and a medium-pressure gas collection well; the high-pressure gas source well and the medium-pressure gas collecting well are respectively provided with corresponding oil pipes, oil sleeve annuluses, wellhead devices and gas collecting manifolds; the wellhead devices are connected with an external wellhead instillation alcohol injection system; the method is characterized in that: the gas collection manifold of the high-pressure gas source well is connected with a wellhead device of the medium-pressure gas collection well; an underground throttle is arranged in an oil pipe of the medium-pressure gas collecting well; and the gas collecting manifold of the medium-pressure gas collecting well is also connected with an external downstream gas collecting device.
A high-pressure gas source well oil pipe and a high-pressure gas source well oil sleeve annulus which are communicated with each other are arranged in the high-pressure gas source well; the high-pressure gas source well comprises a high-pressure gas source well head device and a high-pressure gas collecting pipeline; the high-pressure gas source well wellhead device comprises a high-pressure gas source well casing head and a high-pressure gas source well tubing head, wherein one end of the high-pressure gas source well casing head is connected with the high-pressure gas source well tubing head in an annular mode, one end of the high-pressure gas source well casing head is connected with the high-pressure gas source well tubing head, and the other end of the high-pressure gas source well casing head is connected to an external wellhead instill; one end of the high-pressure gas source well oil pipe head is connected with the high-pressure gas source well oil pipe, and the other end of the high-pressure gas source well oil pipe head is connected with the high-pressure gas collecting pipeline.
An oil pipe of the medium-pressure gas collecting well and an oil sleeve annulus of the medium-pressure gas collecting well which are communicated with each other are arranged in the medium-pressure gas collecting well; the gas well comprises a medium-pressure gas collecting well mouth device and a medium-pressure gas collecting pipeline; the medium-pressure gas collecting well wellhead device comprises a medium-pressure gas collecting well casing head and a medium-pressure gas collecting well tubing head; one end of the casing head of the medium-pressure gas-collecting well is connected with the oil casing annulus of the medium-pressure gas-collecting well, one end of the casing head is connected with the oil pipe head of the medium-pressure gas-collecting well, and the other end of the casing head is connected to an external wellhead instillation alcohol injection system; one end of the medium-pressure gas collecting well oil pipe head is connected with a medium-pressure gas collecting well oil pipe, and the other end of the medium-pressure gas collecting well oil pipe head is connected with a medium-pressure gas collecting pipeline; the underground choke is arranged on the inner wall of the oil pipe of the medium-pressure gas-collecting well; the high-pressure gas collection pipeline is connected with the casing head of the medium-pressure gas collection well.
The high-pressure gas source well group consists of a plurality of high-pressure gas source wells; the high pressure gas collection lines converge to a high pressure gas collection manifold.
The high-pressure gas collecting pipeline and the medium-pressure gas collecting pipeline are both provided with a temperature and pressure monitoring device and a flow monitoring device, and the high-pressure gas collecting pipeline is also provided with a temperature and pressure monitoring device.
The temperature and pressure monitoring device comprises a YTA320 temperature changer and a SITRANS P-DSIII pressure changer.
The model of the flow monitoring device is a FOXBORO electromagnetic flowmeter.
The underground choke is a common differential pressure type underground choke.
The technical effects of the utility model reside in that:
(1) the high-pressure gas source well of the utility model adopts high-pressure gas collection, gas in the high-pressure gas source well is conveyed to the medium-pressure gas collecting well through the high-pressure gas collecting pipeline, and the high-pressure gas is subjected to underground throttling and temperature rise through the underground throttle device positioned in the oil pipe of the medium-pressure gas collecting well and then is collected, so that the risk of forming hydrate by ground cooling of the high-pressure gas collecting pipeline is effectively avoided, and the gas collecting cost is reduced;
(2) the high-pressure gas source well group is formed by the plurality of high-pressure gas source wells, so that the gas collection mode of a high-pressure gas collection single well single pipeline is avoided;
(3) by using the high-medium pressure multi-well series-connection mixed gas collection system, the smooth recording of dynamic monitoring data of a gas source well can be effectively guaranteed, the formation of gas collection pipeline hydrate is effectively inhibited, the liquid carrying capacity of a low-yield gas well is improved, the gas collection production cost is greatly reduced, the safety of the gas collection system is increased, and the safe, economical and efficient operation of the cluster well site gas collection system is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 3 of the present invention.
Reference numerals: 1-a high-pressure gas source well, 2-a high-pressure gas source well oil pipe, 3-a high-pressure gas source well oil sleeve annulus, 4-a high-pressure gas source well casing head, 5-a high-pressure gas source well wellhead device, 6-a high-pressure gas source well oil pipe head, 7-a flow monitoring device, 8-a temperature and pressure monitoring device, 9-a high-pressure gas collection manifold, 10-a medium-pressure gas collection well, 11-a medium-pressure gas collection well oil sleeve annulus, 12-a downhole choke, 13-a medium-pressure gas collection well oil pipe, 14-a medium-pressure gas collection well casing head, 15-a medium-pressure gas collection well wellhead device, 16-a medium-pressure gas collection well oil pipe head, 17-a medium-pressure gas collection pipeline, 18-an external downstream gas collection device, 19-an external wellhead instillation alcohol injection system and 20-a high.
Detailed Description
Example 1
A cluster well high-medium pressure multi-well mixed series gas collection system comprises a high-pressure gas source well 1 and a medium-pressure gas collection well 10; the high-pressure gas source well 1 and the medium-pressure gas collecting well 10 are respectively provided with corresponding oil pipes, oil sleeve annuluses, wellhead devices and gas collecting manifolds; the wellhead devices are all connected with an external wellhead instillation alcohol injection system 19; the method is characterized in that: the gas collection manifold of the high-pressure gas source well 1 is connected with a wellhead device of the medium-pressure gas collection well 10; an underground choke 12 is arranged in an oil pipe of the medium-pressure gas collecting well 10; the gas manifold of the medium pressure gas collection well 10 is also connected to an external downstream gas collection device 18.
Example 2
A cluster well high-medium pressure multi-well mixed series gas collection system comprises a high-pressure gas source well 1 and a medium-pressure gas collection well 10; a high-pressure gas source well oil pipe 2 and a high-pressure gas source well oil sleeve annulus 3 which are mutually communicated are arranged in the high-pressure gas source well 1; the device also comprises a high-pressure gas source well wellhead device 5 and a high-pressure gas collecting pipeline 20; the high-pressure gas source well wellhead device 5 comprises a high-pressure gas source well casing head 4 and a high-pressure gas source well oil pipe head 6, wherein one end of the high-pressure gas source well casing head 4 is connected with the high-pressure gas source well oil casing annulus 3, one end of the high-pressure gas source well casing head is connected with the high-pressure gas source well oil pipe head 6, and the other end of the high-pressure gas source well casing head is connected to an external wellhead instillation alcohol; one end of the high-pressure gas source well oil pipe head 6 is connected with the high-pressure gas source well oil pipe 2, and the other end is connected with the high-pressure gas collecting pipeline 20. An oil pipe 13 of the medium-pressure gas collecting well and an oil sleeve annulus 11 of the medium-pressure gas collecting well which are communicated with each other are arranged in the medium-pressure gas collecting well 10; the device also comprises a medium-pressure gas collecting well wellhead device 15 and a medium-pressure gas collecting pipeline 17; the medium-pressure gas collecting well wellhead device 15 comprises a medium-pressure gas collecting well casing head 14 and a medium-pressure gas collecting well tubing head 16; one end of the casing head 14 of the medium-pressure gas-collecting well is connected with the oil casing annulus 11 of the medium-pressure gas-collecting well, one end of the casing head is connected with the oil pipe head 16 of the medium-pressure gas-collecting well, and the other end of the casing head is connected with an external wellhead instillation alcohol injection system 19; one end of the medium-pressure gas-collecting well oil pipe head 16 is connected with the medium-pressure gas-collecting well oil pipe 13, and the other end is connected with a medium-pressure gas-collecting pipeline 17; the gas well pipe system further comprises a downhole choke 12, wherein the downhole choke 12 is arranged on the inner wall of a medium-pressure gas-collecting well oil pipe 13; the high-pressure gas collection line 20 is connected to the medium-pressure gas collection well casing head 14.
Example 3
As shown in fig. 1, 2 high-pressure gas source wells 1 form a high-pressure gas source well group, and 2 high-pressure gas collecting pipelines 20 are merged to a high-pressure gas collecting manifold 9; the high-pressure gas collection manifold 9 is connected with a medium-pressure gas collection well casing head 14. Wherein, 2 high-pressure gas collecting line 20 and middling pressure gas collecting line 17 are all equipped with warm pressure monitoring devices 8 and flow monitoring devices 7, also are equipped with warm pressure monitoring devices 8 on the high-pressure gas collecting manifold 9. Wherein, the temperature and pressure monitoring device 8 comprises YTA320 temperature changer and SITRANS P-DSIII pressure changer. The model of the flow monitoring device 7 is a FOXBORO electromagnetic flowmeter.
The utility model discloses a concrete implementation process does:
when high-pressure gas flows out from the bottom of a high-pressure gas source well 1, the high-pressure gas flows into a high-pressure gas source well tubing head 6 through the inside of a high-pressure gas source well tubing 2, enters a high-pressure gas collection pipeline 20, then enters a medium-pressure gas collection well tubing annulus 11 through a medium-pressure gas collection well casing head 14, the high-temperature high-pressure gas is heated and mixed at the bottom of the medium-pressure gas source well, enters a medium-pressure gas collection well tubing 13, is throttled and cooled by a downhole throttler 12 to become medium-pressure gas flow, then is heated by formation energy, flows out of the medium-pressure gas collection well tubing 13, enters a medium-pressure gas collection well tubing head 16, and then enters a medium-pressure gas collection pipeline 17 and.
When gas flows through the high-pressure gas collecting pipeline 20 and the medium-pressure gas collecting pipeline 17, the flow monitoring device 7 and the temperature and pressure monitoring device 8 respectively monitor the flow and temperature and pressure conditions of fluid at the inlet and the outlet and transmit the fluid in real time. And the external wellhead instillation alcohol injection system 19 is used for injecting hydrate inhibitors according to the real-time temperature and pressure monitoring condition and the hydrate formation condition.
Through using the utility model discloses a cluster well high-medium pressure multiwell mixes series connection gas collection system, the problem of data test difficulty after having solved traditional medium pressure gas collection and needing every well to drop into 12 throttles in the pit and throttle in the pit, high pressure gas collecting line 20 overlength when having alleviated high pressure gas collection, the danger coefficient is high, the serious problem of pipeline freezing blockage, the volume of going into of throttler under the medium pressure gas collection well 10 has been reduced, switch well number of times and borehole operation work load have been reduced, greatly reduced single well gas collection expense and the later stage dynamic monitoring degree of difficulty, the security in the gas well gas collection production process has been improved.
Claims (7)
1. A cluster well high-medium pressure multi-well mixed series gas collection system comprises a high-pressure gas source well (1) and a medium-pressure gas collection well (10); the high-pressure gas source well (1) and the medium-pressure gas collecting well (10) are respectively provided with corresponding oil pipes, oil sleeve annuluses, a wellhead device and a gas collecting manifold; the wellhead devices are connected with an external wellhead instillation alcohol injection system (19); the method is characterized in that: a gas collection manifold of the high-pressure gas source well (1) is connected with a wellhead device of the medium-pressure gas collection well (10); an underground throttle (12) is arranged in an oil pipe of the medium-pressure gas collecting well (10); the gas collection manifold of the medium-pressure gas collection well (10) is also connected with an external downstream gas collection device (18).
2. The cluster well high-medium pressure multi-well hybrid series gas collection system of claim 1, wherein: a high-pressure gas source well oil pipe (2) and a high-pressure gas source well oil sleeve annulus (3) which are mutually communicated are arranged in the high-pressure gas source well (1); the device also comprises a high-pressure gas source well wellhead device (5) and a high-pressure gas collection pipeline (20); the high-pressure gas source well wellhead device (5) comprises a high-pressure gas source well casing head (4) and a high-pressure gas source well oil pipe head (6), wherein one end of the high-pressure gas source well casing head (4) is connected with the high-pressure gas source well oil casing annulus (3), one end of the high-pressure gas source well casing head is connected with the high-pressure gas source well oil pipe head (6), and the other end of the high-pressure gas source well casing head is connected to an external wellhead instillation alcohol injection system (; one end of the high-pressure gas source well oil pipe head (6) is connected with an oil pipe in the high-pressure gas source well (1), and the other end of the high-pressure gas source well oil pipe head is connected with a high-pressure gas collecting pipeline (20).
3. The cluster well high-medium pressure multi-well hybrid series gas collection system of claim 2, wherein: an oil pipe (13) of the medium-pressure gas collecting well and an oil sleeve annulus (11) of the medium-pressure gas collecting well are communicated with each other in the medium-pressure gas collecting well (10); the gas well comprises a medium-pressure gas collecting well head device (15) and a medium-pressure gas collecting pipeline (17); the medium-pressure gas collecting well wellhead device (15) comprises a medium-pressure gas collecting well casing head (14) and a medium-pressure gas collecting well tubing head (16); one end of the casing head (14) of the medium-pressure gas-collecting well is connected with the oil casing annulus (11) of the medium-pressure gas-collecting well, one end of the casing head is connected with the oil pipe head (16) of the medium-pressure gas-collecting well, and the other end of the casing head is connected with an external wellhead instillation alcohol injection system (19); one end of the medium-pressure gas-collecting well oil pipe head (16) is connected with the medium-pressure gas-collecting well oil pipe (13), and the other end of the medium-pressure gas-collecting well oil pipe head is connected with a medium-pressure gas-collecting pipeline (17); the gas well pipe system also comprises a downhole choke (12), wherein the downhole choke (12) is arranged on the inner wall of the medium-pressure gas collecting well oil pipe (13); the high-pressure gas collection pipeline (20) is connected with the medium-pressure gas collection well casing head (14).
4. The cluster well high-medium pressure multi-well hybrid series gas collection system of claim 3, wherein: the high-pressure gas source wells (1) form a high-pressure gas source well group, and the high-pressure gas collecting pipelines (20) are converged to a high-pressure gas collecting manifold (9).
5. The cluster well high-medium pressure multi-well hybrid series gas collection system of claim 4, wherein: the high-pressure gas collection pipeline (20) and the medium-pressure gas collection pipeline (17) are both provided with a temperature and pressure monitoring device (8) and a flow monitoring device (7), and the high-pressure gas collection pipeline (9) is also provided with a temperature and pressure monitoring device (8).
6. The cluster well high-medium pressure multi-well hybrid series gas collection system of claim 5, wherein: the temperature and pressure monitoring device (8) comprises a YTA320 temperature changer and a SITRANS P-DSIII pressure changer.
7. The cluster well high-medium pressure multi-well hybrid series gas collection system of claim 5, wherein: the type of the flow monitoring device (7) is a FOXBORO electromagnetic flow meter.
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| CN201921009900.7U CN210564478U (en) | 2019-07-02 | 2019-07-02 | Cluster well high-medium-pressure multi-well mixed series gas collection system |
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| CN201921009900.7U CN210564478U (en) | 2019-07-02 | 2019-07-02 | Cluster well high-medium-pressure multi-well mixed series gas collection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894525A (en) * | 2020-08-14 | 2020-11-06 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Device and method for composite integrated drainage and mining of unconventional gas reservoir platform |
| CN114482931A (en) * | 2020-11-13 | 2022-05-13 | 中国石油天然气股份有限公司 | Gas well lifting device |
-
2019
- 2019-07-02 CN CN201921009900.7U patent/CN210564478U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894525A (en) * | 2020-08-14 | 2020-11-06 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Device and method for composite integrated drainage and mining of unconventional gas reservoir platform |
| CN114482931A (en) * | 2020-11-13 | 2022-05-13 | 中国石油天然气股份有限公司 | Gas well lifting device |
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