CN111256036A - Ground gathering and transportation system for exhausted gas reservoir - Google Patents
Ground gathering and transportation system for exhausted gas reservoir Download PDFInfo
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- CN111256036A CN111256036A CN202010046038.8A CN202010046038A CN111256036A CN 111256036 A CN111256036 A CN 111256036A CN 202010046038 A CN202010046038 A CN 202010046038A CN 111256036 A CN111256036 A CN 111256036A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/107—Limiting or prohibiting hydrate formation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
- F17D3/145—Arrangements for supervising or controlling working operations for eliminating water in gas pipelines
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- General Engineering & Computer Science (AREA)
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- General Chemical & Material Sciences (AREA)
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention belongs to the technical field of ground process flows and equipment of underground gas storage, and particularly relates to a ground gathering and transportation system of a depleted gas storage. A defeated system of ground collection for exhausted gas reservoir installs between gas reservoir well head and defeated pipeline outward to connect through pipeline and valves, defeated system of ground collection include slug flow catcher, air cooler, cyclone, filtering separator, triethylene glycol dewatering device, natural gas compressor, unloading torch, measurement separator, produce water storage tank, well head gas production tree and install valves and the unloading valves on the pipeline, set up the long-pending liquid controller on the pipeline. The invention adopts the same set of pipeline and device as the gas injection and gas production process conveying system of the gas storage, realizes the reutilization of the gas injection-production pipeline and device, and greatly reduces the construction amount and the construction cost.
Description
Technical Field
The invention belongs to the technical field of ground process flows and equipment of underground gas storage, and particularly relates to a ground gathering and transportation system of a depleted gas storage.
Background
The difference of gas consumption of many natural gas users in winter and summer is large, the consumption in winter is higher than that in summer generally, under the extreme condition, the consumption in winter is 6-10 times of that in summer, seasonal peak regulation must be carried out through the gas storage, namely, when the gas consumption in summer is lower than the pipeline gas transmission capacity, the surplus gas is stored in the underground gas storage, and when the gas consumption in winter is higher than the pipeline gas transmission capacity, the natural gas is extracted from the underground gas storage to supply gas to the users. In addition, the gas consumption may be different at different time intervals in a day, and a gas reservoir is also required for peak regulation, which is called daily peak regulation. When the peak regulation function is played in seasons, and when the short-time air supply interruption is caused by accidents such as sudden and serious natural disasters or pipeline leakage and the like of the main air supply line, the emergency backup air supply device can also be used as an emergency backup air supply, so that the reliability of air supply is greatly improved.
The natural gas underground gas storage which is successfully applied in the world at present is mainly distributed in developed areas such as America, Russia, Europe and the like. The domestic gas storage is mainly a gas storage of gas condensate oil gas storage represented by a Hongkong oil field and a gas storage of Jintan rock cavern. Due to the difference of geological structures of gas storage reservoirs, a certain difference exists between a gas injection process and a produced gas treatment process, namely a gathering and transportation system. Currently, reports and researches on ground gathering and transportation systems of exhausted gas reservoirs are few, so that ground gathering and transportation processes suitable for underground gas reservoirs of the exhausted gas reservoirs need to be researched, technological parameters, technological equipment and technological processes meet the characteristics of natural gas of the exhausted gas reservoirs, the gathering and transportation processes are optimized, and engineering cost is reduced.
Disclosure of Invention
The invention aims to provide a ground gathering and transporting system of a depleted gas reservoir, aiming at solving the problems in the prior art, and the gathering and transporting system can realize the sharing of pipelines and equipment of ground gas injection and gas production processes of the depleted gas reservoir.
The technical scheme provided by the invention is as follows:
the system comprises a slug flow catcher, an air cooler, a cyclone separator, a filtering separator, a triethylene glycol dehydration device, a natural gas compressor, a blow-down torch, a metering separator, a produced water storage tank, a wellhead gas production tree, and a valve bank and a blow-down valve bank which are arranged on the pipeline;
when the gathering and transportation system injects gas, all valve groups connected with the slug flow catcher and the air cooler are closed, the gas entering from the external transportation pipeline directly enters the cyclone separator, the filtering separator and the triethylene glycol dehydration device for bypass, and then enters the natural gas compressor to be compressed and then is injected into the gas storage through the wellhead gas production tree;
when the gathering and transportation system is used for gas production, the gas injection pipeline valve group is closed, and the produced gas sequentially passes through the metering separator, the slug flow catcher, the air cooler, the cyclone separator, the filtering separator and the triethylene glycol dehydration device and then enters the outward transportation pipeline;
be provided with the hydrops controller on the pipeline, the hydrops controller includes the tube coupling, and the tube coupling passes through the ring flange and connects on the pipeline, has set gradually whirl emergence mechanism, actuating mechanism, spraying mechanism by upper reaches to low reaches in the tube coupling, and the position that corresponds whirl emergence mechanism on the inner wall of tube coupling is provided with the collecting tank, and actuating mechanism connects spraying mechanism, and the collecting tank passes through the spraying cavity of liquid pipe connection spraying mechanism, and actuating mechanism obtains power drive spraying mechanism by whirl emergence mechanism or natural gas and sprays into vaporific thing with the collecting tank hydrops and take away by the natural gas, is provided with the check valve on the liquid pipe.
Specifically, the whirl mechanism is including fixed the whirl support that sets up on the tube coupling inner wall, and the center department of whirl support is rotatory to be provided with the center pin, and the fixed helical blade that is provided with on the center pin.
The spraying mechanism comprises a spraying mechanism and a driving mechanism, wherein the driving mechanism comprises a pressing plate, a rotating part is fixedly arranged on the pressing plate, the direction of the central shaft is extended towards the pressing plate, the end part of the central shaft is fixedly provided with a rotating plate, the rotating part is provided with two landslide bodies towards the side surface of the rotating plate, the two landslide bodies are circularly arranged and are the same in slope direction, the rotating plate is matched with the rotating part, the other side of the pressing plate is fixedly connected with a spraying driving rod of the spraying mechanism, a spring support is fixedly arranged in a pipe joint, and a spring sleeve is arranged on the spraying.
Preferably, actuating mechanism includes the gland, the fixed ring seat that is the ring body that is provided with on the tube coupling inner wall, ring seat external diameter is the same with the tube coupling internal diameter, the entry of ring seat is the convergent structure, the ring seat export is the narrow wedge structure of the wide export of entry, the gland is discoid, the cross section of gland is the narrow wedge structure in the wide left side in the right side, there is the rubber circle along the circumferential direction side-mounting of gland, gland and ring seat looks adaptation and closely cooperate, the downstream side of gland and the spraying actuating lever fixed connection of spraying mechanism, still the fixed spring bracket that is provided with in the tube coupling, the spring housing is located on the spraying actuating lever and is located between spring bracket and the clamp plate.
Specifically, the rotational flow mechanism comprises a rotational flow support fixedly arranged on the inner wall of the pipe joint, a central shaft is rotatably arranged at the center of the rotational flow support, and fan blades are fixedly arranged on the central shaft.
Preferably, actuating mechanism includes the clamp plate, fixedly on the clamp plate is provided with rotates the piece, and central axial clamp plate direction is extended and its end fixing sets up and changes the board, changes board and rotates a looks adaptation, and the opposite side of clamp plate and the spraying actuating lever fixed connection of spraying mechanism still fixedly are provided with spring bracket in the tube coupling, and spring housing locates on the spraying actuating lever and is located between spring bracket and the clamp plate.
Preferably, actuating mechanism includes the gland, the fixed ring seat that is the ring body that is provided with on the tube coupling inner wall, ring seat external diameter is the same with the tube coupling internal diameter, the entry of ring seat is the convergent structure, the ring seat export is the narrow wedge structure of the wide export of entry, the gland is discoid, the cross section of gland is the narrow wedge structure in the wide left side in the right side, there is the rubber circle along the circumferential direction side-mounting of gland, gland and ring seat looks adaptation and closely cooperate, the downstream side of gland and the spraying actuating lever fixed connection of spraying mechanism, still the fixed spring bracket that is provided with in the tube coupling, the spring housing is located on the spraying actuating lever and is located between spring bracket and the clamp plate.
Preferably, the spraying mechanism includes the spray pipe, and in the spray pipe was fixed in the tube coupling through the spraying support, the intraductal piston that slides of spray was provided with, the spraying actuating lever stretched into in the spray pipe and with piston fixed connection, the afterbody of spray pipe was provided with a plurality of atomising heads towards the pipe wall direction of tube coupling.
Preferably, the spraying mechanism comprises a spraying pipe, the spraying pipe is fixed in the pipe joint through a spraying support, a piston is arranged in the spraying pipe in a sliding mode, a spraying driving rod enters the spraying pipe and is fixedly connected with the piston, and a spraying head is arranged at the head of the spraying pipe.
Specifically, the liquid flow pipe is also communicated with a inhibition base liquid tank through an inhibition base liquid pipe, a one-way valve is arranged on the inhibition base liquid pipe, a hydrate inhibition base liquid is arranged in the inhibition base liquid tank, the hydrate inhibition base liquid is a functionalized dendritic substance, and the functionalized dendritic substance comprises at least one quaternary ammonium zwitterion functional end group.
The invention adopts the same set of pipeline and device as the gas injection and gas production process conveying system of the gas storage, realizes the reutilization of the gas injection-production pipeline and device, and greatly reduces the construction amount and the construction cost. In the production process, the natural gas flow direction switching of the same pipeline can be realized through the switching of the valve group on the process pipeline.
The invention adopts the liquid accumulation controller to effectively reduce liquid accumulation in the pipeline, eliminate slug flow, effectively utilize the liquid accumulation in the pipeline to be mixed with hydrate inhibition base liquid, prepare the hydrate inhibitor and spray the hydrate inhibitor into natural gas in a mist shape, destroy the generation condition of the hydrate, reduce the running cost of the pipeline and have convenient operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a liquid trap controller in embodiment 1;
FIG. 3 is a schematic structural view of a liquid trap controller in embodiment 2;
FIG. 4 is a schematic structural view of a liquid trap controller in embodiment 3;
FIG. 5 is a schematic view of the rotating member;
FIG. 6 is a schematic view of the structure of the rotating plate;
FIG. 7 is a schematic structural view of a liquid trap controller according to embodiment 4;
FIG. 8 is a schematic structural view of a liquid accumulation controller in embodiment 5.
1 external conveying pipeline, 2 sections of plug flow catcher, 3 air cooler, 4 cyclone separator, 5 filtering separator,
6 triethylene glycol dehydration device, 7 natural gas compressor, 8 wellhead gas production tree, 9 emptying torch,
10 produced water storage tank, 11 emptying manifold, 12 produced gas gathering and transportation pipeline,
13 gas injection and external transportation pipelines, 14 external transportation vent pipelines, 15 sections of plug flow catcher vent pipelines,
16 cyclone vent pipelines, 17 gas injection vent pipelines, 18 well head vent pipelines,
19 gas injection pipeline, 20 external delivery emptying valve group, 21 external delivery pipeline valve group, 22 external delivery throttling valve group,
23 gas injection pipeline valve group, 24 cyclone emptying valve group, 25 air cooler bypass valve group,
A bypass valve set of 26 sections of plug flow catcher, an outlet valve set of 27 sections of plug flow catcher,
A 28-segment plug flow catcher emptying valve group, a 29 air cooler inlet valve group, a 30 air cooler outlet valve group, a,
An inlet valve set of a 31 triethylene glycol dehydration device, a bypass valve set of a 32 triethylene glycol dehydration device,
33 triethylene glycol dehydration device outlet valve group, 34 external transmission pipeline valve group, 35 natural gas compressor bypass valve group,
36 external transmission pipeline safety valve group, 37 natural gas compressor inlet pipeline valve group,
38 natural gas compressor outlet valve group, 39 wellhead gas injection pipelines, 40 metering separator outlet valve group,
41 wellhead gas injection pipeline valve group, 42 wellhead gas production pipeline valve group, 43 wellhead gas production pipeline safety valve group,
44 a gas production pipeline emptying valve group, a 45-section plug flow catcher liquid discharge pipeline valve group,
46 cyclone separator liquid discharge pipeline valve group, 47 filter separator liquid discharge pipeline valve group,
48 gas injection blow-down pipeline valve group, 49 gas production pipeline safety valve group, 50-segment plug flow catcher inlet valve group,
A 51 gas production bypass pipeline, a 52 cyclone separator outlet pipeline, a 53 cyclone separator inlet pipeline,
54 wellhead gas injection pipeline emptying valve group, 55 liquid discharge manifold, 56 metering separator,
57 metering separator inlet valve group, 58 metering separator liquid discharge valve group, 59 wellhead pipeline,
60 well head vent valve set, 61 pipe joints, 62 liquid collecting tank, 63 liquid flow pipe, 64 inhibition base liquid pipe,
65 check valve, 66 base liquid tank, 70 swirl generation mechanism, 71 swirl holder, 72 center shaft,
73 helical blades, 74 fan blades, 80 spraying mechanism, 81 spraying pipes, 82 pistons, 83 spraying brackets,
84 spray head, 85 spray driving rod, 90 driving mechanism, 91 spring support, 92 spring,
93 ring seat, 94 gland, 95 pressing plate, 96 rotating piece and 97 rotating plate.
Detailed Description
As shown in figure 1, the ground gathering and transportation system for the exhausted gas reservoir is installedBetween the gas storage wellhead and the export pipeline 1, and is connected by a pipeline and a valve group. The exhausted gas stored in the exhausted gas reservoir is the following components in the produced gas: CH (CH)4The molar content is 92 to 100 percent; c2H6The molar content is 0-3%; c3H8The molar content is 0-1%; h2The S content is 0-10 ppm; h2A gas having a molar content of 0 to 1%.
The ground gathering and transporting system comprises a slug flow catcher 2, an air cooler 3, a cyclone separator 4, a filtering separator 5, a triethylene glycol dehydration device 6, a natural gas compressor 7, an emptying torch 9, a metering separator 56, a produced water storage tank 10, a wellhead gas production tree 8, and a valve bank and an emptying valve bank which are arranged on a pipeline.
2 gaseous phase exports of slug flow catcher loop through slug flow catcher export valves 27, air cooler import valves 29 and be connected with air cooler 3, the liquid phase export of slug flow catcher 2 is connected with flowing back collecting pipe 55 through slug flow catcher flowing back pipeline valves 45, slug flow catcher 2 be connected with gas injection pipeline 19 through slug flow catcher by-pass line, set gradually slug flow catcher by-pass line on the slug flow catcher by-pass line valves 26 and air cooler bypass valve 25, the pipeline that slug flow catcher 2 and air cooler 3 are connected simultaneously with the pipeline intercommunication between slug flow catcher by-pass valve 26 and the air cooler bypass valve 25.
The outlet of the air cooler 3 is connected with the cyclone separator 4 through a cyclone separator inlet pipeline 53, and an air cooler outlet valve group 30 is arranged on the cyclone separator inlet pipeline 53.
The gas phase outlet of the cyclone separator 4 is connected with the filtering separator 5 through a cyclone separator outlet pipeline 52, and the liquid phase outlet of the cyclone separator 4 is connected with a liquid discharge manifold 55 through a cyclone separator liquid discharge pipeline valve bank 46; a cyclone emptying pipeline 16 is arranged on a cyclone inlet pipeline 53 between the air cooler outlet valve group 30 and the cyclone 4, a cyclone emptying valve group 24 is arranged on the cyclone emptying pipeline 16, and the cyclone emptying pipeline 16 is connected with an emptying header 11.
The gas phase outlet of the filtering separator 5 is connected with the triethylene glycol dehydration device 6 through a triethylene glycol dehydration device inlet valve group 31, meanwhile, the filtering separator 5 is connected with the natural gas compressor 7 through a triethylene glycol dehydration device bypass valve group 32, an external transmission pipeline valve group 34 and a natural gas compressor inlet pipeline valve group 37 in sequence, and the liquid phase outlet of the filtering separator 5 is connected with a liquid discharge manifold 55 through a filtering separator liquid discharge pipeline valve group 47.
The gas phase outlet of the triethylene glycol dehydration device 6 is connected with the external delivery pipeline 1 sequentially through the gas injection and external delivery pipeline 13 and the gas injection pipeline 19, the gas injection and external delivery pipeline 13 is sequentially provided with the triethylene glycol dehydration device outlet valve group 33 and the external delivery pipeline safety valve group 36, the gas injection pipeline 19 is sequentially provided with the external delivery throttling valve group 22 and the external delivery pipeline valve group 21, the gas injection pipeline 19 is connected with the cyclone separator 4 sequentially through the gas injection pipeline valve group 23 and the cyclone separator inlet pipeline 53, and the liquid phase outlet of the triethylene glycol dehydration device 6 is directly connected with the liquid discharge manifold 55.
The natural gas compressor 7 is connected with a wellhead gas production tree 8 sequentially through a wellhead gas injection pipeline 39 and a wellhead pipeline 59, a natural gas compressor outlet valve group 38 is arranged on the wellhead gas injection pipeline 39, a wellhead gas injection pipeline valve group 41 is arranged on the wellhead pipeline 59, a gas injection emptying pipeline 17 is arranged on the wellhead gas injection pipeline 39 between the natural gas compressor outlet valve group 38 and the wellhead gas injection pipeline valve group 41, a wellhead gas injection pipeline emptying valve group 54 is arranged on the gas injection emptying pipeline 17, and the gas injection emptying pipeline 17 is connected with an emptying manifold 11; natural gas compressor 7 department be provided with the natural gas compressor by pass line, be provided with natural gas compressor by pass line on the natural gas compressor by pass line and by pass valves 35, natural gas compressor by pass line one end is connected on the pipeline between natural gas compressor inlet pipe valves 37 and defeated pipeline safety valve group 36 outward, the other end is connected on well head gas injection pipeline 39 behind natural gas compressor outlet valve group 38, the natural gas compressor by pass line through gas injection blow-down pipe valves 48 and gas injection blow-down pipe 17 be connected. .
The well head gas production tree 8 be connected with metering separator 56 through well head pipeline 59, gas production by pass line 51 respectively, be provided with well head gas injection pipe valves 41 on the well head pipeline 59, be provided with well head gas production pipe valves 42, well head gas production pipeline safety valves 43 and metering separator entry valves 57 on the gas production by pass line 51, well head gas injection pipe valves 41 and well head gas production tree 8 between be provided with well head atmospheric line 18 on the well head gas injection pipeline 59, be provided with well head atmospheric line valves 60 on the well head atmospheric line 18, well head atmospheric line 18 is connected with atmospheric manifold 11.
The gas phase outlet of the metering separator 56 is connected with the slug flow catcher 2 through a produced gas gathering and transporting pipeline 12, a metering separator outlet valve group 40, a gas production pipeline safety valve group 49 and a slug flow catcher inlet valve group 50 are sequentially arranged on the produced gas gathering and transporting pipeline 12 from the gas phase outlet of the metering separator 56, a slug catcher vent pipe 15 is arranged between the gas production pipe safety valve group 49 and the slug catcher inlet valve group 50, a slug catcher vent valve group 28 is arranged on the slug catcher vent pipe 15, the slug catcher vent pipe 15 is connected with a vent manifold 11, the produced gas gathering and transportation pipeline 12 is provided with a produced gas pipeline emptying valve group 44, the produced gas pipeline emptying valve group 44 is positioned between the metering separator outlet valve group 40 and a gas production pipeline safety valve group 49, and the produced gas pipeline emptying valve group 44 is simultaneously connected with the emptying manifold 11; the liquid phase outlet of the metering separator 56 is connected with a liquid discharge manifold 55 through a metering separator liquid discharge valve group 58; the drainage manifold 55 is directly connected to the produced water storage tank 10.
The emptying manifold 11 is directly connected with the emptying torch 9, the emptying manifold 11 is connected with the external transmission pipeline 1 through an external transmission emptying pipeline 14, the external transmission emptying pipeline 14 is positioned between the external transmission pipeline 1 and an external transmission pipeline valve group 21, and the external transmission emptying pipeline 14 is provided with an external transmission emptying valve group 20.
When gas is injected, the gathering and transportation system closes all valve groups connected with the slug flow catcher 2 and the air cooler 3, gas entering from the external transportation pipeline 1 directly enters the cyclone separator 4, the filter separator 5 and the triethylene glycol dehydration device for bypass, then enters the natural gas compressor 7, flows through the gas injection and external transportation pipeline 13 after being compressed, and is injected into the gas storage through the wellhead gas production tree 8 connected with the gas injection and external transportation pipeline 13. And during gas production, the gas injection pipeline valve group is closed, and the produced gas sequentially passes through the metering separator 56, the slug flow catcher 2, the air cooler 3, the cyclone separator 4, the filtering separator 5 and the triethylene glycol dehydration device 6, then enters the gas injection and outward conveying pipeline 13, and then enters the outward conveying pipeline 1.
The gas injection process flow is as follows:
before gas injection, firstly, an output air valve group 20, an air cooler bypass valve group 25, an air cooler outlet valve group 30, a slug flow catcher liquid discharge pipeline valve group 45, a cyclone separator air valve group 24, a triethylene glycol dehydration device inlet valve group 31, a triethylene glycol dehydration device outlet valve group 33, an output pipeline safety valve group 36, a natural gas compressor bypass valve group 35, a gas injection pipeline air valve group 54, a wellhead gas production pipeline valve group 42 and a wellhead gas production pipeline safety valve group 43 need to be closed;
then the natural gas in the external transmission pipeline 1 sequentially passes through an external transmission throttling valve group 21, a gas injection pipeline 19, a gas injection pipeline valve group 23, a cyclone separator inlet pipeline 53, a cyclone separator 4, a cyclone separator outlet pipeline 52, a filtering separator 5, a triethylene glycol dehydration device bypass 32, an external transmission pipeline valve group 34, a natural gas compressor inlet pipeline valve group 37, a natural gas compressor 7, a natural gas compressor outlet valve group 38, a wellhead gas injection pipeline 39, a wellhead gas injection pipeline valve group 41 and a wellhead pipeline 59, and finally is injected into a gas storage through a wellhead gas production tree 8.
The gas production process flow comprises the following steps:
before gas production, firstly, an output air valve group 20, a slug flow catcher air valve group 28, a cyclone separator air valve group 24, a gas injection pipeline air valve group 54, a production gas pipeline air valve group 44, a wellhead air pipe valve group 60, a wellhead gas injection pipeline valve group 41, a slug flow catcher bypass valve group 26, a gas injection pipeline valve group 23, an air cooler bypass valve group 25, a triethylene glycol dehydration device bypass valve group 32, a natural gas compressor bypass valve group 35 and a natural gas compressor inlet pipeline valve group 37 need to be closed;
then the natural gas in the gas storage is sequentially processed by a wellhead gas production tree 8, a wellhead gas production pipeline safety valve group 43, a wellhead gas production pipeline valve group 42, a metering separator inlet valve group 57, a metering separator 56, a metering separator outlet valve group 40, a produced gas gathering and conveying pipeline 12, a gas production pipeline safety valve group 49, a slug flow catcher inlet valve group 50, a slug flow catcher 2, a slug flow catcher outlet valve group 27, an air cooler inlet valve group 29 and an air cooler 3, the system comprises an air cooler outlet valve group 30, a cyclone separator inlet pipeline 53, a cyclone separator 4, a cyclone separator outlet pipeline 52, a filtering separator 5, a triethylene glycol dehydration device inlet valve group 31, a triethylene glycol dehydration device 6, a triethylene glycol dehydration device outlet valve group 33, an external conveying pipeline valve group 34, an external conveying pipeline safety valve group 36, an external conveying throttling valve group 22 and an external conveying pipeline valve group 21, and finally enters an external conveying pipeline 1.
Example 1
Be provided with the hydrops controller on the pipeline, the hydrops controller includes tube coupling 61, tube coupling 61 passes through the ring flange and connects on the pipeline, whirl generation mechanism 70, actuating mechanism 90, spraying mechanism 80 have set gradually by upper reaches to low reaches in the tube coupling 61, the position that corresponds whirl generation mechanism 70 on the inner wall of tube coupling 61 is provided with the collecting tank 62, actuating mechanism 90 connects spraying mechanism 80, the collecting tank 62 passes through the spray chamber of liquid flow pipe 63 connection spraying mechanism 80, actuating mechanism 90 obtains power drive spraying mechanism 80 by whirl generation mechanism 70 or natural gas and sprays into the vaporific thing with the hydrops in the collecting tank 62 and take away by the natural gas.
The rotational flow mechanism comprises a rotational flow support 71 fixedly arranged on the inner wall of the pipe joint 61, a central shaft 72 is rotatably arranged at the center of the rotational flow support 71, and a helical blade 73 is fixedly arranged on the central shaft 72. The size of the sump 62 is adapted to the length of the helical blades 73. Ensuring that water droplets dripping from the rotation of the helical blades 73 can fall into the sump 62.
The driving mechanism 90 includes a pressing plate 95, a rotating member 96 is fixedly arranged on the pressing plate 95, the central shaft 72 extends towards the pressing plate and the end portion thereof is fixedly provided with a rotating plate 97, the rotating plate 97 is matched with the rotating member 96, the other side of the pressing plate 95 is fixedly connected with the spraying driving rod 85 of the spraying mechanism 80, a spring support 91 is further fixedly arranged in the pipe joint 61, and the spring 92 is sleeved on the spraying driving rod 85 and is positioned between the spring support 91 and the pressing plate 95. The side of the rotating member 96 facing the rotating plate 97 is provided with two landslide bodies which are arranged in a circular shape and have the same slope direction.
The spraying mechanism 80 comprises a spraying pipe 81, the spraying pipe 81 is fixed in the pipe section 61 through a spraying support 83, a piston 82 is arranged in a spraying cavity of the spraying pipe 81 in a sliding mode, a spraying driving rod 85 extends into the spraying pipe 81 and is fixedly connected with the piston 82, and a plurality of spraying heads 84 are arranged at the tail of the spraying pipe 81 towards the pipe wall direction of the pipe section 61.
Natural gas flows through the spiral blade 73 and drives the spiral blade 73 to rotate, thereby driving the central shaft 72 to rotate, the central shaft 72 drives the rotating plate 97, the rotating plate 97 vertically presses the rotating piece 96, the rotating plate 97 slides along two sliding slope bodies on the rotating piece 96, the rotating plate 97 and the rotating piece 96 are gradually separated, the pressing plate 95 presses the spring 92, the spraying driving rod 85 drives the piston 82 to move towards the right side, the piston 82 lets the liquid flow pipe 63 be communicated with the spraying pipe 81, at the moment, the pressure in the spraying chamber of the spraying pipe 81 is lower than the air pressure in the pipeline, the accumulated liquid in the liquid collecting tank 62 enters the spraying chamber of the spraying pipe 81 through the liquid flow pipe 63 which is positioned at the bottom of the liquid collecting tank 62 and communicated with the spraying chamber, after the rotating plate 97 is separated from the two sliding slope bodies, the pressing plate 95 bounces towards the left under the action of the spring 92, the piston 82 moves towards the left in the spraying pipe 81, the piston 82 blocks the fluid pipe 63 from communicating with the spray pipe 81. The liquid flow tube 63 is provided with a one-way valve to prevent the liquid flow tube 63 and the accumulated liquid in the spray chamber from flowing back when the piston 82 acts. The one-way valve is not shown in the figures.
Example 2
The present embodiment is different from embodiment 1 in that a fan blade 74 is fixedly provided on the central shaft 72.
Example 3
The present embodiment is different from embodiment 2 in that the liquid flow pipe 63 is not disposed in the pipe wall of the pipe section 61.
The liquid flow pipe 63 is also communicated with a inhibiting base liquid tank 66 through an inhibiting base liquid pipe 64, a one-way valve 65 is arranged on the inhibiting base liquid pipe 64, and hydrate inhibiting base liquid in the inhibiting base liquid tank 66 is functionalized dendritic matter which comprises at least one quaternary ammonium zwitterion functional end group. The hydrate inhibition base liquid needs to be mixed with the accumulated liquid, and then the mixture is prepared into a fog-like body to enter the pipeline. The hydrate inhibition base liquid is mixed and prepared in the liquid flowing pipe 63, so that the accumulated liquid in the pipeline is fully utilized, and the step of preparing the hydrate inhibition base liquid and water into a hydrate inhibitor and injecting the hydrate inhibitor by an injection machine is omitted. The hydrate inhibition base fluid is the prior art and is not described in detail herein. In addition, the proportion relation between the hydrate inhibition base liquid and the accumulated liquid can be determined according to the actual technical requirement by the proportion relation between the cut-off area of the liquid flow pipe 63 and the cut-off area of the hydrate inhibition base liquid pipe 64.
Example 4
Be provided with the hydrops controller on the pipeline, the hydrops controller includes tube coupling 61, and tube coupling 61 passes through the ring flange and connects on the pipeline, is provided with whirl generation mechanism 70, actuating mechanism 90, spraying mechanism 80 by the upper reaches in the tube coupling 61, and the position that corresponds whirl generation mechanism 70 on the inner wall of tube coupling 61 is provided with collecting tank 62, and actuating mechanism 90 connects spraying mechanism 80, and collecting tank 62 passes through the spray chamber of liquid flow pipe 63 connection spraying mechanism 80, and actuating mechanism 90 obtains power drive spraying mechanism 80 by whirl generation mechanism 70 or natural gas and sprays into the vaporific thing with the interior hydrops of collecting tank 62 and take away by the natural gas.
The rotational flow mechanism comprises a rotational flow support 71 fixedly arranged on the inner wall of the pipe joint 61, a central shaft 72 is rotatably arranged at the center of the rotational flow support 71, and a helical blade 73 is fixedly arranged on the central shaft 72. The size of the sump 62 is adapted to the length of the fan blades 74. Ensuring that water droplets dripping from the rotation of the helical blades 73 can fall into the sump 62.
The spraying mechanism 80 comprises a spraying pipe 81, the spraying pipe 81 is fixed in the pipe joint 61 through a spraying support 83, a piston 82 is arranged in the spraying pipe 81 in a sliding mode, a spraying driving rod 85 extends into the spraying pipe 81 and is fixedly connected with the piston 82, and a spraying head 84 is arranged at the head of the spraying pipe 81.
The gland 94 and the ring seat 93 divide the pipe joint 61 into an upstream space and a downstream space, the pressure of the upstream space is greater than that of the downstream space, and the gland 94 is balanced and kept motionless under the action of the spring 92. At this time, the piston 82 leaves the joint between the liquid flow pipe 63 and the spray pipe 81, and the liquid accumulated in the liquid collecting tank 62 enters the spray cavity of the spray pipe 81 through the liquid flow pipe 63. When the pressure in the upstream space continues to increase until the pressure of the gland 94 is unevenly applied, the gland 94 compresses the spring 92 in the right direction, the gland 94 drives the piston 82 to move in the spray pipe 81 in the right direction through the spray driving rod 85, the accumulated liquid entering the spray chamber of the spray pipe 81 is sprayed out by the spray head 84, and the piston 82 blocks the communication position of the liquid flow pipe 63 and the spray pipe 81. The pressure in the upstream space and the pressure in the downstream space tend to be the same, and the gland 94 returns to form a sealing structure with the ring seat 93 under the action of the spring 92. The piston 82 is set clear of the connection between the fluid tube 63 and the spray tube 81, and the liquid in the liquid collecting tank 62 enters the spray cavity of the spray tube 81 again through the fluid tube 63. This is repeated.
Example 5
The present embodiment is different from embodiment 2 in that the liquid flow pipe 63 is not disposed in the pipe wall of the pipe section 61.
The liquid flow pipe 63 is also communicated with a inhibiting base liquid tank 66 through an inhibiting base liquid pipe 64, a one-way valve 65 is arranged on the inhibiting base liquid pipe 64, and hydrate inhibiting base liquid in the inhibiting base liquid tank 66 is functionalized dendritic matter which comprises at least one quaternary ammonium zwitterion functional end group. The hydrate inhibition base liquid needs to be mixed with the accumulated liquid, and then the mixture is prepared into a fog-like body to enter the pipeline. The hydrate inhibition base liquid is mixed and prepared in the liquid flowing pipe 63, so that the accumulated liquid in the pipeline is fully utilized, and the step of preparing the hydrate inhibition base liquid and water into a hydrate inhibitor and injecting the hydrate inhibitor by an injection machine is omitted. The hydrate inhibition base fluid is the prior art and is not described in detail. In addition, the proportion relation between the hydrate inhibition base liquid and the accumulated liquid can be determined according to the actual technical requirement by the proportion relation between the cut-off area of the liquid flow pipe 63 and the cut-off area of the hydrate inhibition base liquid pipe 64.
In the embodiments 5 and 4, the fan blade 74 may be used instead of the spiral blade 73 on the central shaft 72.
Finally, it should be noted that: the above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments. Variations or modifications in different forms may occur to those skilled in the art upon reading the foregoing description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. The ground gathering and transporting system for the exhausted gas reservoir is arranged between a wellhead of the gas reservoir and an external transportation pipeline (1) and is connected with the external transportation pipeline through a pipeline and a valve group, and comprises a slug flow catcher (2), an air cooler (3), a cyclone separator (4), a filtering separator (5), a triethylene glycol dehydration device (6), a natural gas compressor (7), a venting torch (9), a metering separator (56), a produced water storage tank (10), a wellhead gas production tree (8) and a valve group and a venting valve group which are arranged on the pipeline;
when the gathering and transportation system injects gas, all valve groups connected with the slug flow catcher (2) and the air cooler (3) are closed, the gas entering from the external transportation pipeline (1) directly enters the cyclone separator (4), the filtering separator (5) and the triethylene glycol dehydration device (6) for bypass, then enters the natural gas compressor (7), is compressed and then is injected into the gas storage through the wellhead gas production tree (8);
when the gathering and transportation system is used for gas production, the gas injection pipeline valve group is closed, and the produced gas sequentially passes through the metering separator (56), the slug flow catcher (2), the air cooler (3), the cyclone separator (4), the filtering separator (5) and the triethylene glycol dehydration device (6) and then enters the outward transportation pipeline (1);
the device is characterized in that a liquid accumulation controller is arranged on the pipeline and comprises a pipe joint (61), the pipe joint (61) is connected to the pipeline through a flange, a rotational flow generation mechanism (70), a driving mechanism (90) and a spraying mechanism (80) are sequentially arranged from upstream to downstream in the pipe joint (61), a liquid collecting tank (62) is arranged on the inner wall of the pipe joint (61) corresponding to the rotational flow generation mechanism (70), the driving mechanism (90) is connected with the spraying mechanism (80), the liquid collecting tank (62) is connected with a spraying chamber of the spraying mechanism (80) through a liquid flow pipe (63), the driving mechanism (90) is driven by the rotational flow generation mechanism (70) or natural gas to obtain power to drive the spraying mechanism (80) to spray the liquid in the liquid collecting tank (62) into mist, and the mist is taken away by the natural gas, and a one-way valve is arranged on the liquid flow pipe (.
2. The ground gathering and transportation system for the depleted gas reservoir as claimed in claim 1, wherein the rotational flow mechanism comprises a rotational flow support (71) fixedly arranged on the inner wall of the pipe joint (61), a central shaft (72) is rotatably arranged at the center of the rotational flow support (71), and a helical blade (73) is fixedly arranged on the central shaft (72).
3. The ground gathering and transportation system for the depleted gas storage and gas storage warehouse of claim 2, wherein the driving mechanism (90) comprises a pressing plate (95), a rotating member (96) is fixedly arranged on the pressing plate (95), the central shaft (72) extends towards the pressing plate and is fixedly provided with a rotating plate (97) at the end part thereof, two sliding slope bodies are arranged on the rotating member (96) towards the side surface of the rotating plate (97), the two sliding slope bodies are circularly arranged and have the same slope direction, the rotating plate (97) is matched with the rotating member (96), the other side of the pressing plate (95) is fixedly connected with the spraying driving rod (85) of the spraying mechanism (80), a spring support (91) is further fixedly arranged in the pipe joint (61), and the spring (92) is sleeved on the spraying driving rod (85) and is positioned between the spring support (91) and the pressing plate (95).
4. The ground gathering and transportation system for depleted gas reservoirs of claim 2,
actuating mechanism (90) are including gland (94), fixed ring seat (93) that are the ring body that are provided with on tube coupling (61) inner wall, ring seat (93) external diameter is the same with tube coupling (61) internal diameter, the entry of ring seat (93) is the convergent structure, ring seat (93) export is the narrow wedge structure of entry wide export, gland (94) are discoid, the cross section of gland (94) is the narrow wedge structure in wide left side in the right side, install the rubber circle along the circumferential direction side of gland (61), gland (94) and ring seat (93) looks adaptation and closely cooperate, the downstream side of gland (94) and spray actuating lever (85) fixed connection of spray mechanism (80), still fixed spring bracket (91) that is provided with in tube coupling (61), spring (92) cover is located on spray actuating lever (85) and is located between spring bracket (91) and clamp plate (95).
5. The ground gathering and transportation system for depleted gas reservoirs of claim 1,
the cyclone mechanism comprises a cyclone support (71) fixedly arranged on the inner wall of the pipe joint (61), a central shaft (72) is rotatably arranged at the center of the cyclone support (71), and fan blades (74) are fixedly arranged on the central shaft (72).
6. The ground gathering and transportation system for depleted gas reservoirs of claim 5,
actuating mechanism (90) is including clamp plate (95), fixed being provided with on clamp plate (95) and rotating piece (96), center pin (72) extend and its end fixing sets up swivel plate (97) to the clamp plate direction, swivel plate (97) and rotation piece (96) looks adaptation, the opposite side of clamp plate (95) and spraying actuating lever (85) fixed connection of spraying mechanism (80), still fixed spring bracket (91) that is provided with in tube coupling (61), spring (92) cover is located on spraying actuating lever (85) and is located between spring bracket (91) and clamp plate (95).
7. The ground gathering and transportation system for depleted gas reservoirs of claim 5,
actuating mechanism (90) are including gland (94), fixed ring seat (93) that are the ring body that are provided with on tube coupling (61) inner wall, ring seat (93) external diameter is the same with tube coupling (61) internal diameter, the entry of ring seat (93) is the convergent structure, ring seat (93) export is the narrow wedge structure of entry wide export, gland (94) are discoid, the cross section of gland (94) is the narrow wedge structure in wide left side in the right side, install the rubber circle along the circumferential direction side of gland (61), gland (94) and ring seat (93) looks adaptation and closely cooperate, the downstream side of gland (94) and spray actuating lever (85) fixed connection of spray mechanism (80), still fixed spring bracket (91) that is provided with in tube coupling (61), spring (92) cover is located on spray actuating lever (85) and is located between spring bracket (91) and clamp plate (95).
8. The ground gathering and transportation system for the depleted gas storage and gas storage warehouse as claimed in claim 3 or 6, wherein the spraying mechanism (80) comprises a spraying pipe (81), the spraying pipe (81) is fixed in the pipe section (61) through a spraying bracket (83), a piston (82) is arranged in the spraying pipe (81) in a sliding manner, a spraying driving rod (85) extends into the spraying pipe (81) and is fixedly connected with the piston (82), and a plurality of spraying heads (84) are arranged at the tail part of the spraying pipe (81) towards the pipe wall direction of the pipe section (61).
9. The ground gathering and transportation system for the depleted gas storage and gas storage warehouse as claimed in claim 4 or 7, wherein the spraying mechanism (80) comprises a spraying pipe (81), the spraying pipe (81) is fixed in the pipe joint (61) through a spraying bracket (83), a piston (82) is arranged in the spraying pipe (81) in a sliding mode, a spraying driving rod (85) extends into the spraying pipe (81) and is fixedly connected with the piston (82), and a spraying head (84) is arranged at the head of the spraying pipe (81).
10. The ground gathering system for the depleted gas reservoir according to claim 1, wherein the liquid flow pipe (63) is further communicated with the inhibiting base liquid tank (66) through an inhibiting base liquid pipe (64), the inhibiting base liquid pipe (64) is provided with a one-way valve (65), and hydrate inhibiting base liquid in the inhibiting base liquid tank (66) is functionalized dendrite, and the functionalized dendrite comprises at least one quaternary ammonium zwitterion functional end group.
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| CN202010046038.8A CN111256036B (en) | 2020-01-16 | 2020-01-16 | Ground gathering and transportation system for exhausted gas reservoir |
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| CN202010046038.8A CN111256036B (en) | 2020-01-16 | 2020-01-16 | Ground gathering and transportation system for exhausted gas reservoir |
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Cited By (1)
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| CN114486358A (en) * | 2022-01-25 | 2022-05-13 | 江苏宜测检测科技有限公司 | River water quality detection sampling method and device |
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