CN212508211U - Coal bed gas well compound production increasing wellhead and platform system - Google Patents
Coal bed gas well compound production increasing wellhead and platform system Download PDFInfo
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- CN212508211U CN212508211U CN201922300848.7U CN201922300848U CN212508211U CN 212508211 U CN212508211 U CN 212508211U CN 201922300848 U CN201922300848 U CN 201922300848U CN 212508211 U CN212508211 U CN 212508211U
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Abstract
The utility model discloses a coal bed gas well compound production increase output well head and platform system, including single well and platform control pipe valve, the explosion-proof aspiration pump of combustible gas that single well and platform control pipe valve are connected, the explosion-proof aspiration pump of combustible gas is connected with and produces gas velocity measurement and water trap, the export of the explosion-proof aspiration pump of combustible gas is connected on the gas collecting manifold through producing gas velocity measurement and water trap. Compared with the prior art, the utility model the advantage lie in: low cost, high operability, quick effect and great yield increase. Through feasibility research, implementation scheme, economic evaluation, equipment design and manufacture, the method enters field application, can improve the gas production speed of the coal bed gas by 30-50%, and has wide prospect and great economic potential in hundreds or thousands of wells in the potential market.
Description
Technical Field
The utility model relates to a coal bed gas field coal bed gas development technical field specifically indicates a coal bed gas well compound production increase well head and platform system.
Background
The coal bed gas in China has richer reserves. In 2018, the expert evaluation of the authorities such as the ministry of land and soil resources and the like shows that the coal bed gas resource amount within 2000 meters of burial depth in China is 30 trillion square, and the resource amount can be collected is 12.5 trillion square. Compared with the united states with the earliest global coal bed methane development and the highest yield, the amount of Chinese resources ranks the third, but the yield is far lower than that of the united states. In 2008, 556 hundred million parts of coal bed gas are produced in the United states, and 359 hundred million parts of coal bed gas still exist after yield recovery in 2015, but according to statistics of the International Energy Agency (IEA) and the like, the yield is 36.9 hundred million parts in 2014, and only one tenth of the yield in the same year in the United states. In fact, the development and the start of coal bed gas in China are relatively early, a gas drainage station has been established in the way of Liaoning in 1952, and a modern coal bed gas development technology is introduced in 1989. By the end of 2016, 106 coalbed methane exploration rights and 12 mining rights exist, and 1.7 ten thousand ports of accumulated drilling are drilled. However, the research on mining technology, resource potential, high-yield main control factor enrichment and the like is yet to be strengthened, so that the yield targets planned in the 'eleven-five' and 'twelve-five' countries are not realized. However, as long as the combined efforts are made, the development method, the production system, the yield increasing measures and the like are actively and innovatively summarized, and the yield is believed to be increased more rapidly. Some experts even predict that the coal bed gas yield in China can reach 60-100 hundred million parts in 2020, and the increase reaches 200 hundred million parts in 2030.
About twenty thousand existing coal bed gas wells are shut down by 30% -40%. How to economically and effectively take inventory, restart shut-in wells and abandon wells has no efficient solution and economic and effective technology at present.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a coal bed gas long stop well retest well head and platform system, reform transform including explosion-proof aspiration pump of combustible gas, production well platform gas collection system, measurement system.
In order to solve the technical problem, the utility model provides a technical scheme does: the coal bed gas well complex yield increasing wellhead and platform system comprises a single well and a platform control pipe valve, wherein a combustible gas explosion-proof air pump connected with the single well and the platform control pipe valve is connected with a gas production speed metering and water removing device, and the outlet of the combustible gas explosion-proof air pump is connected to a gas collecting manifold through the gas production speed metering and water removing device.
Compared with the prior art, the utility model the advantage lie in: low cost, high operability, quick effect and great yield increase. Through feasibility research, implementation scheme, economic evaluation, equipment design and manufacture, the method enters field application, can improve the gas production speed of the coal bed gas by 30-50%, and has wide prospect and great economic potential in hundreds or thousands of wells in the potential market.
Preferably, the combustible gas explosion-proof air pump is applied to a single well, a well platform and a gas collection system, and each well mouth is provided with an independent valve and a detection device, so that the safe production activity of the whole coal bed gas well can be ensured.
Preferably, the inlet pressure, the outlet pressure and the flow of the combustible gas explosion-proof air pump are automatically adjusted and controlled to start and stop according to the oil jacket pressure and the pressure of the gas collecting manifold, the outlet pressure of the combustible gas explosion-proof air pump is displayed immediately, the flow of the combustible gas explosion-proof air pump is subjected to water removal and is measured by a platform gas production metering device, and the combustible gas explosion-proof air pump can be automatically started and stopped according to the pressure change of a wellhead and the pressure change of a gas collecting pipeline.
Preferably, the main parameters of the explosion-proof air pump for combustible gas meet the following requirements: suction pressure: 0.01 to 0.03 MPa; exhaust pressure: 0.15 to 0.3 MPa; output flow rate: 0.7-5.0 Nm 3/min; the lubrication mode is as follows: oil-free lubrication; an explosion-proof motor with explosion-proof grade diibt 4 is configured; rated power is 4.5-7.5KW, rated current is 8.82-10A, and rated voltage is 380V.
Drawings
FIG. 1 is a schematic structural diagram of an air suction pump and metering device system of a complex production and stimulation wellhead and platform system of a coal bed gas well.
FIG. 2 is a system flow diagram of a coalbed methane well stimulation wellhead and platform system.
In the figure: 1. a well head pressure gauge and a pipe valve, 2, a combustible gas explosion-proof air pump, 3, a water removal and gas production metering device, 4 and a gas collection manifold.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model discloses when concrete implementation, will combine below in the embodiment of the utility model the drawing, it is right to the technical scheme in the embodiment of the utility model provides a clear, complete description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
1. An explosion-proof air pump for producing combustible gas. The main parameters satisfy: suction pressure: 0.01 to 0.03 MPa; exhaust pressure: 0.15 to 0.3 MPa; output flow rate: 0.7 to 5.0Nm3Min; the lubrication mode is as follows: oil-free lubrication; an explosion-proof motor with explosion-proof grade diibt 4 is configured; rated power is 4.5-7.5KW, rated current is 8.82-10A, and rated voltage is 380V.
2. Preferably selecting low-liquid and low-pressure long-stop wells or producing wells and surveying sites to complete the implementation scheme and the pipe network modification design scheme and design drawing.
3. The system is installed and used. The air suction port of the combustible gas explosion-proof air suction pump is connected with the wellhead end, and the air exhaust port is connected with the branch line end of the gas collecting pipe. Constructors have qualifications and are trained on duty, relevant pipelines are shut down before operation, nitrogen purging is completed, and fire operation permission and safety inspection are handled.
The utility model discloses a theory of operation: the utility model provides a coal bed gas long-term shutdown well resupply well head and platform system, including explosion-proof aspiration pump of combustible gas, production well platform gas collection system, measurement system design and transformation.
This coal bed gas long shut-in well compound production well head and platform system include:
1. an explosion-proof gas extraction pump for combustible gas is used for reducing the oil casing pressure of a coal-bed gas well.
The yield of a coal-bed gas well is greatly influenced by the oil casing pressure. The oil jacket is pressed too high, the liquid level of the shaft can be pressed, the bottom hole pressure is too high, the production pressure difference is too small, the resistance of the coal bed gas flowing into the bottom hole is increased, the yield of the gas well is reduced, and the coal bed gas well can not be normally produced or even shut down. The oil jacket pressure is too low and is lower than the system back pressure, so that the produced gas of the oil jacket can not enter a gas collection system and can not be collected and utilized. The inlet pressure of the combustible gas explosion-proof air pump is 0.01-0.03 MPa, and the outlet pressure is 0.15-0.3 MPa, so that the production of the low-yield and low-efficiency shut-down coal bed gas well can be restored, and the yield of the normally produced coal bed gas well can be increased. The main parameters of the explosion-proof air pump for combustible gas are as follows: suction pressure:0.01 to 0.03 MPa; exhaust pressure: 0.15 to 0.3 MPa; output flow rate: 0.7 to 5.0Nm3Min; the lubrication mode is as follows: oil-free lubrication; an explosion-proof motor with explosion-proof grade diibt 4 is configured; rated power is 4.5-7.5KW, rated current is 8.82-10A, and rated voltage is 380V. The device has the characteristics of small occupied area, small volume, light weight, low noise, stable operation, safety, reliability and the like.
2. The production well platform gas collection system and the metering system are designed and improved and used for collecting and metering the gas produced by a plurality of coal bed gas wells on one platform, inputting the gas into a branch gas collection pipeline and further inputting the gas into a main gas collection pipeline network.
2-3 production wells with few coalbed methane production platforms and 8-10 production wells with more coalbed methane production platforms. The system is added, and needs to be modified in a single-well gas collection and entering platform metering system, and a design drawing is shown in figure 1. The air suction port of the combustible gas explosion-proof air suction pump is connected with the single well end, and the air exhaust port is connected with the branch line end of the gas collecting pipe. Constructors have qualifications and are trained on duty, relevant pipelines are shut down before operation, nitrogen purging is completed, and fire operation permission and safety inspection are handled.
Example (b):
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the technology is described here by taking the well site 13-09 of the coal bed methane company, korea city branch company, china oil and gas group company, as an example.
FIG. 1 is an embodiment of the present invention showing a pump and gauge system design on a 13-09 well site platform. The left side of the drawing is an air pump, and the safe distance between the air pump and a wellhead as well as the measuring table meets the national standard and the China oil and gas industry standard. The upper part of the figure is a metering and converging branch pipe and a valve. The lower right portion of the figure leads to a single production well.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless a limitation is explicitly stated.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (4)
1. A coal bed gas well double production increasing well head and platform system is characterized in that: the gas collection manifold comprises a single well and a platform control pipe valve, wherein a combustible gas explosion-proof air pump connected with the single well and the platform control pipe valve is connected with a gas production speed metering and water removal device, and an outlet of the combustible gas explosion-proof air pump is connected with the gas collection manifold through the gas production speed metering and water removal device.
2. The coalbed methane well stimulation wellhead and platform system of claim 1, wherein: the combustible gas explosion-proof air pump is applied to a single well, a well platform and a gas collection system.
3. The coalbed methane well stimulation wellhead and platform system of claim 1, wherein: the inlet pressure, the outlet pressure and the flow of the combustible gas explosion-proof air pump are automatically adjusted and controlled to start and stop according to the oil jacket pressure and the pressure of the gas collection manifold.
4. The coalbed methane well stimulation wellhead and platform system of claim 1, wherein: the explosion-proof air pump for producing combustible gas has the main parameters as follows: suction pressure: 0.01 to 0.03 MPa; exhaust pressure: 0.15 to 0.3 MPa; output flow rate: 0.7 to 5.0Nm3Min; the lubrication mode is as follows: oil-free lubrication; an explosion-proof motor with explosion-proof grade diibt 4 is configured; rated power is 4.5-7.5KW, rated current is 8.82-10A, and rated voltage is 380V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922300848.7U CN212508211U (en) | 2019-12-20 | 2019-12-20 | Coal bed gas well compound production increasing wellhead and platform system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922300848.7U CN212508211U (en) | 2019-12-20 | 2019-12-20 | Coal bed gas well compound production increasing wellhead and platform system |
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| CN212508211U true CN212508211U (en) | 2021-02-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837621A (en) * | 2022-03-28 | 2022-08-02 | 贵州省油气勘查开发工程研究院 | Deep coal bed gas abandoned well and long-stop well re-production method |
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2019
- 2019-12-20 CN CN201922300848.7U patent/CN212508211U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837621A (en) * | 2022-03-28 | 2022-08-02 | 贵州省油气勘查开发工程研究院 | Deep coal bed gas abandoned well and long-stop well re-production method |
| CN114837621B (en) * | 2022-03-28 | 2023-06-23 | 贵州省油气勘查开发工程研究院 | Deep coal bed gas abandoned well and long stop well production method |
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Granted publication date: 20210209 Termination date: 20211220 |