CN115388332A - Coal bed gas well mouth sled dress modularization composite set - Google Patents
Coal bed gas well mouth sled dress modularization composite set Download PDFInfo
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- CN115388332A CN115388332A CN202211038564.5A CN202211038564A CN115388332A CN 115388332 A CN115388332 A CN 115388332A CN 202211038564 A CN202211038564 A CN 202211038564A CN 115388332 A CN115388332 A CN 115388332A
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- 239000003245 coal Substances 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000000926 separation method Methods 0.000 claims abstract description 49
- 239000010865 sewage Substances 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 20
- 238000009825 accumulation Methods 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 46
- 238000004519 manufacturing process Methods 0.000 description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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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
- F17D3/14—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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Abstract
The invention provides a skid-mounted modularized combination device for a coal bed gas well mouth, which comprises a well site separation skid block, a five-way manifold skid block and a well mouth cutting, intercepting and metering integrated skid; the five-way manifold pry block and the wellhead cutting, intercepting and metering integrated pry are both arranged on one side of the well site separation pry block and are detachably and fixedly connected with the well site separation pry block, and the five-way manifold pry block and the wellhead cutting, intercepting and metering integrated pry are detachably and fixedly connected; the well site separation prying block comprises a bottom pry A and a horizontal double-cylinder separator fixedly arranged on the bottom pry A, wherein an inlet pipeline, an air outlet pipeline, a liquid discharge pipeline, a safety discharge pipeline, a sewage discharge pipeline and an air using pipeline which are connected with the horizontal double-cylinder separator are fixedly arranged on the bottom pry A; the wellhead cutting, intercepting and metering integrated pry comprises a bottom pry B and a multifunctional pipeline fixedly arranged on the bottom pry B. The invention is convenient for transportation and field installation, the function division of the three plates is reasonable, each plate has various adaptability functions, and the product has wide adaptability.
Description
Technical Field
The invention relates to a natural gas acquisition technology, in particular to a coal bed methane wellhead skid-mounted modular combination device.
Background
The gas well head is skid-mounted on a natural gas treatment station, a gas gathering station and a single well trial production site of a land condensate gas field; the device is also suitable for the settlement separation of natural gas, condensate oil and oil-gas mixtures produced by wellhead platform gas wells of the ocean condensate gas field, and realizes the continuous metering of the separated oil-gas by instruments.
The existing coal bed gas well mouth separation pry is large in size and various in pipelines, all parts are generally machined by manufacturers after the design is finished, and then the parts are transported to the site for assembly and fixation, so that the construction time is long, and unexpected risks such as part loss, product quality reduction and the like are easy to occur in the assembly process.
In addition, coal bed gas well mouth separation sled is after the stability period after trial production period and trial production, and it need connect the pipeline of different functions, like measuring pipeline, well head cut-off pipeline etc. these pipelines also need on-the-spot installation, and the pipeline of installing different moreover still need demolish original some pipelines, and there is great material waste like this, also seriously influences well site normal operating.
Disclosure of Invention
Aiming at the problems in the background art, the invention aims to provide a skid-mounted modularized combination device for a coal bed gas well mouth, which is designed in a modularized manner, the skid-mounted coal bed gas well mouth is divided into three skid blocks which can be connected with each other, the three skid blocks can be processed in a preselected mode, transportation and field installation are facilitated, the three skid blocks are reasonable in function division, each skid block has multiple adaptability functions, and each function can be selectively switched according to the field work requirement, so that the product has wide adaptability; in addition, the modularized design is convenient for ensuring the processing quality, the product can be repeatedly utilized, and the cost performance is higher.
In order to achieve the purpose, the invention adopts the following technical scheme:
a skid-mounted modularized combination device for a coal bed gas well mouth comprises a well site separation skid block, a five-way manifold skid block and a well mouth cutting, intercepting and metering integrated skid block; the five-way manifold prying block and the wellhead cutting, intercepting and metering integrated prying block are both arranged on one side of the well site separation prying block and are detachably and fixedly connected with the well site separation prying block;
the well site separation pry block comprises a bottom pry A and a horizontal double-cylinder separator fixedly arranged on the bottom pry A, the horizontal double-cylinder separator comprises a separation tank at the upper part and a liquid accumulation tank at the lower part, the separation tank is communicated with the liquid accumulation tank through a connecting pipe, and liquid level meters are connected to the separation tank and the liquid accumulation tank; an inlet pipeline, an air outlet pipeline, a liquid discharge pipeline, a safety discharge pipeline, a sewage discharge pipeline and an air pipeline which are connected with the horizontal double-drum separator are also fixedly arranged on the bottom pry A;
the wellhead cutting, intercepting and metering integrated pry block comprises a bottom pry B and a multifunctional pipeline fixedly arranged on the bottom pry B;
the five-way manifold prying block comprises a bottom pry C and a five-way pipeline fixedly arranged on the bottom pry C, wherein the five-way pipeline comprises an inlet pipe A, an inlet pipe B, an outlet pipe A, an outlet pipe B, an inlet pipe C, a four-way joint (307), a three-way joint and a connecting pipe C;
one end of the inlet pipe A is connected with the spare gas collection pipeline, the other end of the inlet pipe A is connected with a first port of the four-way joint, one end of the inlet pipe B is connected with a third port of the four-way joint, and the other end of the inlet pipe B is connected with an inlet pipeline on the well site separation prying block;
one end of the outlet pipe A is connected with an external gas transmission pipeline, the other end of the outlet pipe A is connected with a first connector of the three-way joint, the outlet pipe B is connected with a third connector of the three-way joint, and the other end of the outlet pipe B is connected with a gas outlet pipeline on the well site separation pry block;
one end of the inlet pipe C is connected with a second port of the four-way joint, the other end of the inlet pipe C is connected with a multifunctional pipeline of the wellhead cutting, intercepting and metering integrated pry block, and the other end of the multifunctional pipeline is connected with a wellhead gas collecting pipeline;
one end of the connecting pipe C is connected with the fourth port of the four-way joint, and the other end of the connecting pipe C is connected with the second interface of the three-way joint;
the inlet pipe A, the inlet pipe B, the outlet pipe B and the connecting pipe C are provided with gate valves; the multifunctional pipeline is provided with an emergency cut-off valve;
the side parts of the bottom pry A, the bottom pry B and the bottom pry C are respectively provided with a connecting plate and are fixedly connected through the connecting plates; and the bottom pry B is provided with an intelligent control cabinet.
The multifunctional pipeline comprises an output pipeline A, an output pipeline B, a conventional measuring pipeline, a reversing switching pipeline and an intelligent measuring and cutting pipeline, the output ends of the output pipeline A and the output pipeline B are connected with an inlet pipe C through a second connecting pipe, the input ends of the output pipeline A and the output pipeline B are connected with the output end of the conventional measuring pipeline, the input end of the conventional measuring pipeline is connected with the output end of the reversing switching pipeline, and the input end of the reversing switching pipeline is connected with the output end of the intelligent measuring and cutting pipeline; the input end of the intelligent measurement cut-off pipeline is connected with a wellhead gas collection pipeline;
the reversing switching pipeline comprises two branches connected in parallel, the middle of each branch is provided with a plugging interface for connecting an external pipeline, and two ends of each branch are respectively provided with a flat gate valve.
The output pipeline A is provided with a flowmeter, and two sides of the flowmeter are respectively provided with a gate valve;
the output pipeline B is also provided with a gate valve;
the conventional measuring pipeline is provided with a first temperature transmitter and a first pressure gauge.
The intelligent measurement cut-off pipeline comprises a test pipe, one end of the test pipe is connected with the wellhead gas collection pipeline, the other end of the test pipe is connected with the input end of the reversing switching pipeline through the wellhead emergency cut-off valve, and a second temperature transmitter, a thermometer, a second pressure transmitter and a second pressure gauge are arranged on the test pipe;
and the second temperature transmitter and the second pressure transmitter are respectively connected with a control system arranged in the intelligent control cabinet through an AD conversion module, and the control system is connected with and controls the wellhead emergency cut-off valve through an input/output module.
One end of the inlet pipeline is connected to the upper part of the separation tank, and the other end of the inlet pipeline is connected with an outlet pipe B on the five-way manifold prying block;
one end of the air outlet pipeline is connected to the upper part of the separation tank, and the other end of the air outlet pipeline is connected with an inlet pipe B on the five-way manifold prying block.
The liquid discharge pipeline comprises a liquid discharge main pipe A, a manual control pipe, an automatic control pipe and a liquid discharge main pipe B, wherein the input end of the liquid discharge main pipe A is connected to the lower part of the liquid accumulation tank, the output end of the liquid discharge main pipe A is respectively connected with the input ends of the manual control pipe and the automatic control pipe, the output ends of the manual control pipe and the automatic control pipe are both connected with the input end of the liquid discharge main pipe B, and the output end of the liquid discharge main pipe B is provided with a connector for connecting an external pipeline; the manual control pipe is sequentially provided with a gate valve and a stop valve from the input end to the output end; the automatic control pipe is provided with a gate valve, an electric ball valve and a stop valve which are connected in series in sequence from the input end to the output end.
The gas using pipeline comprises a main pipeline A, a main pipeline B, an automatic control pipeline, a manual control pipeline and a pressure reducing pipe, wherein the input end of the main pipeline A is connected to the upper part of the separation tank, the output end of the main pipeline A is respectively connected with the input ends of the automatic control pipeline and the manual control pipeline, the output ends of the automatic control pipeline and the manual control pipeline are both connected to the input end of the main pipeline B, and the main pipeline B is provided with an interface for connecting an external gas using pipeline;
the automatic control pipeline is sequentially provided with a filter, a gate valve, an electromagnetic valve, a pressure reducing valve and a first ball valve from an input end to an output end;
the manual control pipeline is sequentially provided with a gate valve, a pressure reducing valve and a second ball valve from an input end to an output end;
one end of the pressure reducing pipe is connected with the input end of the main pipeline B through a third ball valve, the other end of the pressure reducing pipe is provided with a connector A for connecting a safe discharge pipeline, and a safety valve B is arranged between the third ball valve and the connector A;
the safety relief pipeline comprises a pressure relief main pipe, a first pressure relief pipe, a second pressure relief pipe, a discharge pipe and a discharge main pipe, wherein the input end of the pressure relief main pipe is connected to the upper part of the separation tank, the output end of the pressure relief main pipe is respectively connected with the input ends of the first pressure relief pipe and the discharge pipe, the output ends of the first pressure relief pipe and the discharge pipe are both connected with the discharge main pipe, the output end of the second pressure relief pipe is connected with the discharge main pipe, and the input end of the second pressure relief pipe is connected with an interface A of the gas pipeline;
two ends of the first pressure relief pipe are respectively provided with a gate valve, and the middle part of the first pressure relief pipe is connected with a safety valve A; the delivery pipe from the input to the output be equipped with gate valve and stop valve in proper order.
One end of the liquid discharge pipeline is connected to the lower part of the liquid accumulation tank, and the other end of the liquid discharge pipeline is provided with a connector connected with an external liquid discharge pipeline.
The invention has the beneficial effects that: according to the skid-mounted coal bed gas well mouth, skid-mounted coal bed gas well mouths are divided into three skid-mounted blocks which can be mutually connected, the three skid-mounted coal bed gas well mouths can be pre-selected and processed, transportation and field installation are facilitated, functions of the three skid-mounted blocks are reasonably divided, each plate has multiple adaptability functions, and the functions can be selectively switched according to field work requirements, so that the product has wide adaptability; in addition, the modularized design is convenient for ensuring the processing quality, the product can be repeatedly utilized, and the cost performance is higher.
Drawings
FIG. 1 is a schematic diagram of the overall structure and piping of the present invention.
FIG. 2 is a schematic diagram showing the positional relationship between the separation tank and the liquid accumulation tank.
FIG. 3 is a perspective view of the well site separation skid.
Fig. 4 is a schematic perspective view of a five-way manifold pry block.
Fig. 5 is a schematic perspective structure diagram of a wellhead cutting, intercepting and metering integrated pry block.
Fig. 6 is a schematic perspective view of the safety relief line.
Fig. 7 is a perspective view of the gas pipeline.
In the figure: 7. the intelligent control system comprises a filter, 8, an electromagnetic valve, 11, an electric ball valve, 12, safety valves B and 21, a plugging interface, 22, a flowmeter, 23, a second pressure gauge, 24, a second temperature transmitter, 25, a thermometer, 26, a second pressure transmitter, 31, interfaces A and 32, safety valves A and 55 and an intelligent control cabinet;
101. a bottom pry A,102, a separation tank, 103, a liquid accumulation tank, 104 and a liquid level meter;
201. the intelligent measurement system comprises a bottom pry B, a bottom pry 202, input pipelines A and 203, input pipelines B and 204, a conventional measurement pipeline 205, a reversing switching pipeline 206 and an intelligent measurement cut-off pipeline; 260. the device comprises a test tube, 231, a first pressure gauge, 241, a first temperature transmitter, 262 and a wellhead emergency cut-off valve;
301. the bottom pry C,302, the inlet pipe A,303, the inlet pipe B,304, the outlet pipe A,305, the outlet pipe B,306, the inlet pipe C,307, the four-way joint, 308, the three-way joint, 309 and the connecting pipe C;
331. a liquid discharge main pipe A,332, a manual control pipe, 333, an automatic control pipe, 334 and a liquid discharge main pipe B; 341. main pipelines A and 342, main pipelines B and 343, self-control pipelines and 344, manual control pipelines and 345 and pressure reducing pipes; 350. a pressure relief manifold 351, a first pressure relief pipe 352, a second pressure relief pipe 353, a discharge pipe 354 and a discharge manifold; 360. a liquid discharge pipeline 370, an inlet pipeline 380 and an air outlet pipeline.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1-7, a skid-mounted modularized combination device for a coal bed gas well mouth comprises a well site separation skid block, a five-way manifold skid block and a well mouth cutting, intercepting and metering integrated skid block; the five-way manifold prying block and the wellhead cutting-intercepting metering integrated prying block are both arranged on one side of the well site separation prying block and are detachably and fixedly connected with the well site separation prying block;
the well site separation pry block comprises a bottom pry A101 and a horizontal double-cylinder separator fixedly arranged on the bottom pry A101, the horizontal double-cylinder separator comprises an upper separation tank 102 and a lower liquid accumulation tank 103, the separation tank 102 is communicated with the liquid accumulation tank 103 through a connecting pipe, and liquid level meters 104 are connected to the separation tank 102 and the liquid accumulation tank 103; an inlet pipeline 370, an air outlet pipeline 380, a liquid discharge pipeline, a safe discharge pipeline, a sewage discharge pipeline 360 and an air pipeline which are connected with the horizontal double-drum separator are also fixedly arranged on the bottom pry A101;
the wellhead cutting, intercepting and metering integrated pry block comprises a bottom pry B201 and a multifunctional pipeline fixedly arranged on the bottom pry B201;
the five-way pipe collection prying block comprises a bottom pry C301 and a five-way pipeline fixedly arranged on the bottom pry C301, wherein the five-way pipeline comprises an inlet pipe A302, an inlet pipe B303, an outlet pipe A304, an outlet pipe B305, an inlet pipe C306, a four-way joint 307, a three-way joint 308 and a connecting pipe C309;
one end of the inlet pipe A302 is connected with the spare gas collection pipeline, the other end of the inlet pipe A302 is connected with a first port of the four-way joint 307, one end of the inlet pipe B303 is connected with a third port of the four-way joint 307, and the other end of the inlet pipe B303 is connected with an inlet pipeline 370 on the well site separation prying block;
one end of the outlet pipe A304 is connected with an external gas pipeline, the other end of the outlet pipe A is connected with a first connector of the three-way joint 308, the outlet pipe B305 is connected with a third connector of the three-way joint 308, and the other end of the outlet pipe B305 is connected with a gas outlet pipeline 380 on the well site separation pry block;
one end of the inlet pipe C306 is connected with a second port of the four-way joint 307, the other end of the inlet pipe C is connected with a multifunctional pipeline of the wellhead cutoff interception and metering integrated pry block, and the other end of the multifunctional pipeline is connected with a wellhead gas collection pipeline;
one end of the connecting pipe C309 is connected with the fourth port of the four-way joint 307, and the other end is connected with the second interface of the three-way joint 308;
the inlet pipe A302, the inlet pipe B303, the outlet pipe B305 and the connecting pipe C309 are provided with gate valves; the multifunctional pipeline is provided with an emergency cut-off valve 262;
the side parts of the bottom pry A101, the bottom pry B201 and the bottom pry C301 are respectively provided with a connecting plate and are fixedly connected through the connecting plate; and the bottom pry B201 is provided with an intelligent control cabinet 55.
Specifically, according to above-mentioned structure, each plate in this device can be in the manufacture of manufacture factory processing completion back, transports to field assembly, only needs to connect end sled A101, end sled B201, end sled C301 as a whole this moment, again with each part pipeline correspond the interface connection can, whole process can the quality of assurance, and convenient reliable.
The horizontal double-cylinder separator on the well site separation skid block belongs to the prior art, so the structure of the horizontal double-cylinder separator is not explained any more, and the horizontal double-cylinder separator has the advantages that the pipeline connected with the horizontal double-cylinder separator is reasonably configured, the pipeline functions are complete, and the adaptability is high; the second characteristic is that the five-way manifold prying block provides different options or redundancy after failure, for example, the feeding source can be a wellhead connected with the inlet pipe C306, and can also be other sources connected with the inlet pipe A302, when the wellhead fails, the separator can still work, and when the separator fails, wellhead media can be conveyed to other separation equipment through the outlet pipe A304, so that normal use of production equipment is kept to the maximum extent; the wellhead cutoff, interception and measurement integrated pry block integrates multiple functions of cutoff, interception, measurement and the like, and is small in pipeline quantity and small in size.
The multifunctional pipeline comprises an output pipeline A202, an output pipeline B203, a conventional measuring pipeline 204, a reversing switching pipeline 205 and an intelligent measuring and cutting pipeline 206, wherein the output ends of the output pipeline A202 and the output pipeline B203 are connected with an inlet pipe C306 through second connecting pipes, the input ends of the output pipeline A202 and the output pipeline B203 are connected with the output end of the conventional measuring pipeline 204, the input end of the conventional measuring pipeline 204 is connected with the output end of the reversing switching pipeline 205, and the input end of the reversing switching pipeline 205 is connected with the output end of the intelligent measuring and cutting pipeline 206; the input end of the intelligent measurement cut-off pipeline 206 is connected with a wellhead gas collection pipeline;
the reversing switching pipeline 205 comprises two branches connected in parallel, the middle part of each branch is provided with a plugging interface 21 for connecting an external pipeline, and two ends of each branch are respectively provided with a flat gate valve.
The output pipeline A202 is provided with a flowmeter 22, and two sides of the flowmeter 22 are respectively provided with a gate valve;
the output pipeline B203 is also provided with a gate valve;
the conventional measurement pipeline 204 is provided with a first temperature transmitter 241 and a first pressure gauge 231. Specifically, the first temperature transmitter 241 is connected to a control system disposed in the intelligent control cabinet 55 through a cable, so as to provide data for the control system, and the control system displays the data on a display.
The intelligent measurement cut-off pipeline 206 comprises a test pipe 260, one end of the test pipe 260 is connected with a wellhead gas collection pipeline, the other end of the test pipe 260 is connected with the input end of the reversing switching pipeline 205 through a wellhead emergency cut-off valve 262, and a second temperature transmitter 24, a thermometer 25, a second pressure transmitter 26 and a second pressure gauge 23 are arranged on the test pipe 261;
the second temperature transmitter 24 and the second pressure transmitter 26 are respectively connected with a control system arranged in the intelligent control cabinet through an AD conversion module, and the control system is connected with the wellhead emergency cut-off valve 262 through an input/output module and controls the wellhead emergency cut-off valve 262. In the structure, installation and control of the wellhead emergency cut-off valve 262 belong to the prior art, specifically, the wellhead emergency cut-off valve 262 is installed on a wellhead gas collecting main pipeline and is in a normally open state, and the control system is connected with the wellhead emergency cut-off valve 262 through a cable and controls the action of the wellhead emergency cut-off valve 262 according to information acquired by the second temperature transmitter 24 and the second pressure transmitter 26, so that safety guarantee is provided for the production process; in addition, the specific configuration and control principle of the control system also belong to the known technology, and are not described herein again.
In general, the conventional measurement pipeline 204 differs from the smart measurement pipeline 206 in that: the data obtained by the conventional measuring pipeline is only used for displaying and alarming, and does not participate in the control of the wellhead emergency cut-off valve 262, the conventional measuring pipeline is suitable for gas wells with stable gas production conditions, the pressure drop change in the production process of the gas wells is slow, and the wellhead emergency cut-off valve 262 does not need to be operated frequently; the data obtained by the intelligent measurement pipeline 206 provides a criterion for controlling the wellhead emergency shut-off valve 262, and is suitable for low-yield gas wells with unstable gas production conditions, wherein the pressure drop of the gas wells is fast, and the wellhead emergency shut-off valve 262 needs to be frequently operated. In the invention, the intelligent measuring pipeline 206 is connected with the wellhead gas collecting pipeline, so that the adaptability is stronger; and the conventional measuring pipeline 204 is arranged behind the reversing switching pipeline 205, and when an external pipeline is connected to the reversing switching pipeline, the medium conveyed to the five-way manifold pry block can be detected timely.
Specifically, the multifunctional pipeline provides multiple functions, different valves can be opened and closed according to production needs, and corresponding functional modes can be selected; the reversing switching pipeline 205 provides interfaces for connecting external mechanisms at multiple positions, so that more functional mechanisms can be conveniently connected in an expanded mode.
One end of the inlet pipeline 370 is connected to the upper part of the separation tank 102, and the other end is connected with an inlet pipe B303 on the five-way manifold pry block;
one end of the gas outlet pipeline 380 is connected to the upper part of the separation tank 102, and the other end of the gas outlet pipeline is connected with an outlet pipe B305 on the five-way manifold prying block.
The liquid discharge pipeline comprises a liquid discharge main pipe A331, a manual control pipe 332, an automatic control pipe 333 and a liquid discharge main pipe B334, wherein the input end of the liquid discharge main pipe A331 is connected to the lower part of the liquid accumulation tank 103, the output end of the liquid discharge main pipe A331 is respectively connected with the input ends of the manual control pipe 332 and the automatic control pipe 333, the output ends of the manual control pipe 332 and the automatic control pipe 333 are both connected with the input end of the liquid discharge main pipe B334, and the output end of the liquid discharge main pipe B334 is provided with an interface for connecting an external pipeline; the manual control pipe 332 is provided with a gate valve and a stop valve in sequence from the input end to the output end; the automatic control pipe 333 is provided with a gate valve, an electric ball valve 11 and a stop valve which are connected in series in sequence from the input end to the output end. Specifically, when the valves at the two ends of the manual control pipe 332 are closed, the automatic control pipe 333 is operated, and the electric ball valves on the automatic control pipe are controlled by the control system.
The gas using pipeline comprises a main pipeline A341, a main pipeline B342, an automatic control pipeline 343, a manual control pipeline 344 and a pressure reducing pipe 345, the input end of the main pipeline A341 is connected with the upper part of the separation tank 102, the output end of the main pipeline A341 is respectively connected with the input ends of the automatic control pipeline 343 and the manual control pipeline 344, the output ends of the automatic control pipeline 343 and the manual control pipeline 344 are both connected with the input end of the main pipeline B342, and the main pipeline B342 is provided with an interface for connecting an external gas using pipeline;
the automatic control pipeline 343 is provided with a filter 7, a gate valve, an electromagnetic valve 8, a pressure reducing valve and a first ball valve in sequence from an input end to an output end;
the manual control pipeline 344 is provided with a gate valve, a pressure reducing valve and a second ball valve from an input end to an output end in sequence;
one end of the pressure reducing pipe 345 is connected with the input end of the main pipeline B through a third ball valve, the other end of the pressure reducing pipe is provided with a port A31 for connecting a safe discharge pipeline, and a safety valve B12 is arranged between the third ball valve and the port A31;
the safety relief pipeline comprises a pressure relief manifold 350, a first pressure relief pipe 351, a second pressure relief pipe 352, a discharge pipe 353 and a discharge manifold 354, wherein the input end of the pressure relief manifold 350 is connected to the upper part of the separation tank 102, the output end of the pressure relief manifold 350 is respectively connected with the input ends of the first pressure relief pipe 351 and the discharge pipe 353, the output ends of the first pressure relief pipe 351 and the discharge pipe 353 are both connected with the discharge manifold 354, the output end of the second pressure relief pipe 352 is connected with the discharge manifold 354, and the input end of the second pressure relief pipe 352 is connected with an interface A31 of the gas pipeline;
two ends of the first pressure relief pipe 351 are respectively provided with a gate valve, and the middle part of the first pressure relief pipe 351 is connected with a safety valve A32; the discharge pipe 353 is provided with a gate valve and a stop valve in sequence from the input end to the output end. Specifically, the first pressure release pipe 351 may be directly vented, and when the first pressure release pipe 351 fails, a path from the second pressure release pipe 352 to the safety valve B12 may be opened to be vented from the safety valve B12.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
The present invention is not described in detail in the prior art.
Claims (8)
1. A skid-mounted modularized combination device for a coal bed gas well mouth comprises a well site separation skid block, a five-way manifold skid block and a well mouth cutting, intercepting and metering integrated skid block; the method is characterized in that: the five-way manifold prying block and the wellhead cutting, intercepting and metering integrated prying block are both arranged on one side of the well site separation prying block and are detachably and fixedly connected with the well site separation prying block;
the well site separation pry block comprises a bottom pry A (101) and a horizontal double-cylinder separator fixedly arranged on the bottom pry A (101), the horizontal double-cylinder separator comprises a separation tank (102) at the upper part and a liquid accumulation tank (103) at the lower part, the separation tank (102) is communicated with the liquid accumulation tank (103) through a connecting pipe, and liquid level meters (104) are connected to the separation tank (102) and the liquid accumulation tank (103); an inlet pipeline (370) connected with the horizontal double-drum separator, an air outlet pipeline (380), a liquid discharge pipeline, a safety discharge pipeline, a sewage discharge pipeline (360) and an air pipeline are further fixedly arranged on the bottom pry A (101);
the wellhead cutting, intercepting and metering integrated pry block comprises a bottom pry B (201) and a multifunctional pipeline fixedly arranged on the bottom pry B (201);
the five-way pipe manifold prying block comprises a bottom pry C (301) and a five-way pipeline fixedly arranged on the bottom pry C (301), wherein the five-way pipeline comprises an inlet pipe A (302), an inlet pipe B (303), an outlet pipe A (304), an outlet pipe B (305), an inlet pipe C (306), a four-way joint (307), a three-way joint (308) and a connecting pipe C (309);
one end of the inlet pipe A (302) is connected with the spare gas collection pipeline, the other end of the inlet pipe A is connected with a first port of the four-way joint (307), one end of the inlet pipe B (303) is connected with a third port of the four-way joint (307), and the other end of the inlet pipe B (303) is connected with an inlet pipeline (370) on the well site separation pry block;
one end of the outlet pipe A (304) is connected with an external gas pipeline, the other end of the outlet pipe A is connected with a first connector of the three-way joint (308), the outlet pipe B (305) is connected with a third connector of the three-way joint (308), and the other end of the outlet pipe B (305) is connected with a gas outlet pipeline (380) on the well site separation pry block;
one end of the inlet pipe C (306) is connected with a second port of the four-way joint (307), the other end of the inlet pipe C is connected with a multifunctional pipeline of the wellhead cutoff and interception metering integrated pry block, and the other end of the multifunctional pipeline is connected with a wellhead gas collection pipeline;
one end of the connecting pipe C (309) is connected with the fourth port of the four-way joint (307), and the other end of the connecting pipe C is connected with the second interface of the three-way joint (308);
the inlet pipe A (302), the inlet pipe B (303), the outlet pipe B (305) and the connecting pipe C (309) are provided with gate valves; the multifunctional pipeline is provided with an emergency shut-off valve (262);
the side parts of the bottom pry A (101), the bottom pry B (201) and the bottom pry C (301) are respectively provided with a connecting plate and are fixedly connected through the connecting plates; and an intelligent control cabinet (55) is arranged on the bottom pry B (201).
2. The skid-mounted modular combination device for the coal bed gas wellhead as claimed in claim 1, wherein: the multifunctional pipeline comprises an output pipeline A (202), an output pipeline B (203), a conventional measurement pipeline (204), a reversing switching pipeline (205) and an intelligent measurement cut-off pipeline (206), wherein the output ends of the output pipeline A (202) and the output pipeline B (203) are connected with an inlet pipe C (306) through a second connecting pipe, the input ends of the output pipeline A (202) and the output pipeline B (203) are connected with the output end of the conventional measurement pipeline (204), the input end of the conventional measurement pipeline (204) is connected with the output end of the reversing switching pipeline (205), and the input end of the reversing switching pipeline (205) is connected with the output end of the intelligent measurement cut-off pipeline (206); the input end of the intelligent measurement cut-off pipeline (206) is connected with a wellhead gas collection pipeline;
the reversing switching pipeline (205) comprises two branches connected in parallel, the middle of each branch is provided with a plugging interface (21) used for being connected with an external pipeline, and two ends of each branch are respectively provided with a flat gate valve.
3. The skid-mounted modular combination device for the coal bed gas wellhead as claimed in claim 2, wherein: the output pipeline A (202) is provided with a flowmeter (22), and two sides of the flowmeter (22) are respectively provided with a gate valve;
the output pipeline B (203) is also provided with a gate valve;
the conventional measuring pipeline (204) is provided with a first temperature transmitter (241) and a first pressure gauge (231).
4. The skid-mounted modular combination device for coal-bed gas well mouths as claimed in claim 2, characterized in that: the intelligent measurement cut-off pipeline (206) comprises a test pipe (260), one end of the test pipe (260) is connected with a wellhead gas collection pipeline, the other end of the test pipe is connected with the input end of the reversing switching pipeline (205) through a wellhead emergency cut-off valve (262), and a second temperature transmitter (24), a thermometer (25), a second pressure transmitter (26) and a second pressure gauge (23) are arranged on the test pipe (261);
and the second temperature transmitter (24) and the second pressure transmitter (26) are respectively connected with a control system arranged in the intelligent control cabinet through an AD conversion module, and the control system is connected with a wellhead emergency cut-off valve (262) through an input/output module and controls the wellhead emergency cut-off valve (262).
5. The skid-mounted modular combination device for coal-bed gas well mouths as claimed in claim 1, is characterized in that: one end of the inlet pipeline (370) is connected to the upper part of the separating tank (102), and the other end of the inlet pipeline is connected with an inlet pipe B (303) on the five-way manifold prying block;
one end of the gas outlet pipeline (380) is connected to the upper part of the separating tank (102), and the other end of the gas outlet pipeline is connected with an outlet pipe B (305) on the five-way manifold prying block.
6. The skid-mounted modular combination device for coal-bed gas well mouths as claimed in claim 1, is characterized in that: the liquid discharge pipeline comprises a liquid discharge header pipe A (331), a manual control pipe (332), an automatic control pipe (333) and a liquid discharge header pipe B (334), wherein the input end of the liquid discharge header pipe A (331) is connected to the lower part of the liquid accumulation tank (103), the output end of the liquid discharge header pipe A (331) is respectively connected with the input ends of the manual control pipe (332) and the automatic control pipe (333), the output ends of the manual control pipe (332) and the automatic control pipe (333) are respectively connected with the input end of the liquid discharge header pipe B (334), and the output end of the liquid discharge header pipe B (334) is provided with an interface for connecting an external pipeline; the manual control pipe (332) is sequentially provided with a gate valve and a stop valve from an input end to an output end; the automatic control pipe (333) is provided with a gate valve, an electric ball valve and a stop valve which are connected in series in sequence from the input end to the output end.
7. The skid-mounted modular combination device for the coal bed gas wellhead as claimed in claim 1, wherein: the gas utilization pipeline comprises a main pipeline A (341), a main pipeline B (342), an automatic control pipeline (343), a manual control pipeline (344) and a pressure reducing pipe (345), the input end of the main pipeline A (341) is connected to the upper part of the separation tank (102), the output end of the main pipeline A is respectively connected with the input ends of the automatic control pipeline (343) and the manual control pipeline (344), the output ends of the automatic control pipeline (343) and the manual control pipeline (344) are respectively connected to the input end of the main pipeline B (342), and an interface for connecting an external gas utilization pipeline is arranged on the main pipeline B (342);
the automatic control pipeline (343) is sequentially provided with a filter (7), a gate valve, an electromagnetic valve (8), a pressure reducing valve and a first ball valve from an input end to an output end;
the manual control pipeline (344) is provided with a gate valve, a pressure reducing valve and a second ball valve from an input end to an output end in sequence;
one end of the pressure reducing pipe (345) is connected with the input end of the main pipeline B through a third ball valve, the other end of the pressure reducing pipe is provided with a port A (31) for connecting a safe discharge pipeline, and a safety valve B (12) is arranged between the third ball valve and the port A (31);
the safety relief pipeline comprises a pressure relief header pipe (350), a first pressure relief pipe (351), a second pressure relief pipe (352), a discharge pipe (353) and a discharge header pipe (354), the input end of the pressure relief header pipe (350) is connected to the upper part of the separation tank (102), the output end of the pressure relief header pipe is respectively connected with the input ends of the first pressure relief pipe (351) and the discharge pipe (353), the output ends of the first pressure relief pipe (351) and the discharge pipe (353) are respectively connected with the discharge header pipe (354), the output end of the second pressure relief pipe (352) is connected with the discharge header pipe (354), and the input end of the second pressure relief pipe is connected with an interface A (31) of the gas pipeline;
two ends of the first pressure relief pipe (351) are respectively provided with a gate valve, and the middle part of the first pressure relief pipe (351) is connected with a safety valve A (32); and the discharge pipe (353) is sequentially provided with a gate valve and a stop valve from the input end to the output end.
8. The skid-mounted modular combination device for coal-bed gas well mouths as claimed in claim 1, is characterized in that: one end of the sewage discharge pipeline (360) is connected with the lower part of the liquid accumulation tank (103), and the other end is provided with a connector connected with an external sewage discharge pipeline.
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| CN202211038564.5A CN115388332B (en) | 2022-08-29 | 2022-08-29 | Modular combined device for skid-mounted coal bed gas wellhead |
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| CN115388332B (en) | 2024-03-19 |
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