CN117948075A - Integrated fluid control device for multi-scenario applications - Google Patents

Abstract

The invention relates to the technical field of fluid conversion and distribution equipment, in particular to an integrated fluid control device for multi-scene application, which comprises a functional cabin, wherein the functional cabin comprises an inner pipe and an outer pipe, two ends of the inner pipe are respectively provided with a first port and a second port, two ends of the outer pipe are respectively provided with a single-ended interface and a third port, the inner pipe is sleeved in the outer pipe and is concentrically arranged, the first port of the inner pipe is positioned inside the outer pipe and is lower than the single-ended interface of the outer pipe, and the inner pipe penetrates through the outer pipe and is arranged outside the outer pipe; the second port is connected with the first control valve, and the third port is connected with the second control valve; and the functional cabin is connected with one or more structures of a hydrogen sulfide gas collecting device, a carbon dioxide corrosion detecting device, a thermometer, a pressure gauge and an oil sample valve. The invention is suitable for oil well heads and oil well conveying pipelines, is of an integrated structure, and can be used for installing and operating various scenes such as oil well heads, oil conveying pipelines and the like without stopping production.

Description

Integrated fluid control device for multi-scenario applications

Technical Field

The invention relates to the technical field of fluid conversion and distribution equipment, in particular to an integrated fluid control device for multi-scene application.

Background

The oil field mainly uses crude oil production, and various scene applications are needed to be carried out on the oil well head for producing crude oil according to working condition requirements. Because the oil pumping unit of the oil well is required to be stopped for operation in most scenes, the normal production of crude oil is inevitably influenced, and the economic benefit of enterprises is reduced. Particularly, when various detection devices are installed at the wellhead of the oil well, the later installation is limited by the field environment, so that the time of production stopping and construction is long (about 5-6 hours), and sometimes on-site fire is required, so that the crude oil yield is influenced, the labor intensity and the production cost of personnel are increased, and the safety risk is increased.

Secondly, many of the current scenes cannot be applied due to the limitation of the wellhead structure layout of the oil well, and a plurality of difficulties are caused for enterprise production.

In addition, the mixed medium of crude oil, water and natural gas is pumped out from the oil well, and the natural gas contains hydrogen sulfide. In order to prevent the toxic hydrogen sulfide gas from damaging human bodies and polluting the environment, the oilfield production unit needs to detect the content of hydrogen sulfide in natural gas in crude oil of an oil well every day. Because there is no small gas-liquid separator for oil well pipeline in China, the production unit can only let the worker wear the protective clothing to carry the special container, and then separate after extracting the oil-gas mixture sample from the oil well wellhead. Because the oil gas samples are extracted daily for detection according to the requirements, the production cost is increased and a great safety risk exists.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an integrated fluid control device for multi-scene application.

In order to solve the technical problems, the invention provides the following technical scheme:

The integrated fluid control device comprises a functional cabin, wherein the functional cabin comprises an inner pipe and an outer pipe, the two ends of the inner pipe are respectively provided with a first port and a second port, the two ends of the outer pipe are respectively provided with a single-ended interface and a third port, the inner pipe is sleeved in the outer pipe and is concentrically arranged, the first port of the inner pipe is positioned inside the outer pipe and is lower than the single-ended interface of the outer pipe, and the inner pipe penetrates through the outer pipe and is arranged outside the outer pipe;

the volume of the outer tube is twice or more than that of the inner tube;

The second port is connected with the first control valve, the third port is connected with the second control valve, the first control valve is provided with at least three ports, the second control valve is provided with at least three ports, and one port of the first control valve is connected with one port of the second control valve;

And the functional cabin is connected with one or more structures of a hydrogen sulfide gas collecting device, a carbon dioxide corrosion detecting device, a thermometer, a pressure gauge and an oil sample valve.

The second control valve comprises a valve body, a valve core is arranged in the valve body, the valve core is connected with the valve body through a spring, the valve body is provided with three ports, wherein a first port and a second port are respectively arranged on two sides of the valve core and the spring, a third port is arranged on one side of the valve core away from the spring, the first port is connected with one port of the first control valve, and the third port is connected with a third port of the outer pipe;

the first control valve is a four-way valve or a three-way valve.

The first control valve is a four-way valve, a lower port of the first control valve is connected with a sleeve, a first check valve and a second check valve are respectively arranged on the sleeve, and the flow directions controlled by the first check valve and the second check valve are opposite.

The second control valve is a three-way valve, and the first control valve is a four-way valve or a three-way valve.

The first control valve is a four-way valve, a lower port of the first control valve is connected with a sleeve, a first check valve and a second check valve are respectively arranged on the sleeve, and the flow directions controlled by the first check valve and the second check valve are opposite.

The single-end interface of the outer tube is connected with a blind plate or a conversion head, and a clamp joint is arranged at the single-end interface of the outer tube.

The conversion head comprises an outer interface, an inner interface is arranged in the outer interface, two ends of the outer interface are open, one end of the outer interface is connected with the single-end interface of the outer pipe, two ends of the inner interface are open, one end of the inner interface is inserted into the first end of the inner pipe after passing through the single-end interface of the outer pipe, and the other end of the inner interface is penetrated to the outside of the outer interface.

The hydrogen sulfide gas collecting device comprises a choke tube, the choke tube is arranged inside the outer tube and is close to the single-end interface, the choke tube is vertically arranged, the top of the choke tube penetrates through the side wall of the outer tube and then is connected with a foam catcher through an external pipeline, the foam catcher is connected with a hydrogen sulfide gas detector, and a hydrogen sulfide gas detection electromagnetic valve is arranged between the foam catcher and the hydrogen sulfide gas detector.

The carbon dioxide corrosion detection device comprises a taking and placing opening formed in the outer tube, the taking and placing opening is connected with a carbon dioxide corrosion hanging piece, the carbon dioxide corrosion hanging piece extends to the inside of the outer tube, and the taking and placing opening is provided with a sealing cover.

The outer pipe is connected with an oil sample pipeline, and the oil sample pipeline is connected with an oil sample valve;

and the inner tube is connected with a pressure gauge and a thermometer.

The beneficial effects achieved by the invention are as follows:

The invention is suitable for oil well heads and oil well conveying pipelines, is of an integrated structure, and can be used for installing and operating various scenes such as oil well heads, oil conveying pipelines and the like without stopping production, thereby ensuring normal production of crude oil. Specifically, the invention has the functions of gas-liquid separation, fluid conversion and distribution control, rapid installation of a plurality of devices and apparatuses with different specifications, sizes and directions, and bidirectional remote control.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of a first embodiment of the present invention;

FIG. 2 is a schematic diagram showing the fluid directions of the first control valve, the functional module, and the second control valve in an operation mode according to an embodiment of the present invention;

FIG. 3 is a schematic diagram showing the fluid direction of the first control valve, the functional compartment and the second control valve in a bypass mode according to an embodiment of the present invention;

FIG. 4 is a schematic diagram showing the fluid directions of the first control valve, the functional module, and the second control valve in a multi-fluid mode according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the oil-gas separation of a functional compartment according to an embodiment of the present invention;

FIG. 6 is a schematic diagram II of the oil-gas separation of the first functional compartment according to the embodiment of the invention;

FIG. 7 is a schematic view of the flow direction of hydrogen sulfide gas before collection (for scenario one) according to an embodiment of the present invention;

FIG. 8 is a schematic view of the direction of fluid and oil gas in the hydrogen sulfide gas production (for scenario one) according to an embodiment of the present invention;

FIG. 9 is a schematic illustration of the fluid direction after placement of a carbon dioxide etch tab according to one embodiment of the present invention (as applied to scenario two);

FIG. 10 is a schematic view of the direction of fluid during placement of a carbon dioxide etch tab according to one embodiment of the invention (for scenario two);

FIG. 11 is a schematic view of the fluid direction after installation of the apparatus according to the first embodiment of the present invention (applied to scenario three);

FIG. 12 is a schematic view of the fluid direction of an oil metering device according to an embodiment of the present invention (applied to scenario four);

FIG. 13 is a schematic view of the direction of fluid flow after a water mixing line is connected (for scenario five) according to an embodiment of the present invention;

FIG. 14 is a schematic view of the direction of fluid flow when a sleeve is connected and both the first and second check valves are closed (for scenario six) according to an embodiment of the present invention;

FIG. 15 is a schematic view of the direction of fluid flow when a sleeve is connected and the first check valve is open (for scenario six) according to an embodiment of the present invention;

FIG. 16 is a schematic view of the direction of fluid flow when a sleeve is connected and a second check valve is open (for scenario seven) according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of a second embodiment of the present invention;

FIG. 18 is a schematic view of a third embodiment of the present invention;

fig. 19 is a schematic view of the structure of a fourth embodiment of the present invention;

FIG. 20 is a schematic view of the flow direction of a fourth embodiment of the present invention applied to an oil pipeline (applied to scenario eight);

fig. 21 is a schematic diagram of the fluid direction when the fourth embodiment of the invention is applied to the pressure relief of the perforation of the oil pipeline (applied to the eighth scenario).

In the figure: 1. an outer tube; 101. a single-ended interface; 102. a third port; 2. an inner tube; 201. a first port; 202. a second port; 3. a first control valve; 4. a second control valve; 401. a valve core; 402. a spring; 403. a valve body; 5. an inlet; 6. an outlet; 7. a clamp joint; 8. a blind plate; 901. an external interface; 902. an internal interface; 10. a hydrogen sulfide gas collection device; 1001. a hydrogen sulfide gas detector; 1002. a choke tube; 1003. a foam catcher; 1004. detecting an electromagnetic valve by hydrogen sulfide gas; 11. a carbon dioxide corrosion detection device; 1101. a taking and placing port; 1102. carbon dioxide corrosion hanging pieces; 1103. sealing cover; 12. an apparatus; 13. an inlet of the oil measuring device; 14. an outlet of the oil measuring device; 15. a watering line; 161. a sleeve; 162. a first check valve; 163. a second check valve; 17. a thermometer; 18. a pressure gauge; 19. an oil sample pipe; 20. an oil sample valve; 21. an oil pump; 22. a pressure alarm.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.

As shown in fig. 1-21, an integrated fluid control device for multi-scenario application comprises a functional cabin, wherein the functional cabin comprises an inner pipe 2 and an outer pipe 1, two ends of the inner pipe 2 are respectively provided with a first port 201 and a second port 202, two ends of the outer pipe 1 are respectively provided with a single-ended interface 101 and a third port 102, the inner pipe 2 is sleeved in the outer pipe 1 and is concentrically arranged, the first port 201 of the inner pipe 2 is positioned inside the outer pipe 1 and is lower than the single-ended interface 101 of the outer pipe 1, the inner pipe 2 is arranged to penetrate through the outer pipe 1, the second port 202 of the inner pipe 2 is positioned outside the outer pipe 1, and the inner pipe 2 and the outer pipe 1 are fixedly connected;

The volume of the outer tube 1 is twice or more than that of the inner tube 2.

The second port 202 is connected with the first control valve 3, the third port 102 is connected with the second control valve 4, the first control valve 3 is provided with at least three through holes, the second control valve 4 is provided with at least three through holes, and one through hole of the first control valve 3 is connected with one through hole of the second control valve 4. One port of the first control valve 3 communicates with the inlet 5 of the present invention and one port of the second control valve 4 communicates with the outlet 6 of the present invention.

The functional cabin is connected with one or more structures of a hydrogen sulfide gas acquisition device 10, a carbon dioxide corrosion detection device 11, a thermometer 17, a pressure gauge 18 and an oil sample valve 20.

The single-end connector 101 of the outer tube 1 is provided with a clamp connector 7, and the single-end connector 101 of the outer tube 1 is connected with a blind plate 8 or a conversion head through the clamp connector 7.

The conversion head comprises an outer interface 901, an inner interface 902 is arranged in the outer interface 901, two ends of the outer interface 901 are open, one end of the outer interface 901 is connected with the single-end interface 101 of the outer pipe 1, two ends of the inner interface 902 are open, one end of the inner interface 902 passes through the single-end interface 101 of the outer pipe 1 and then is inserted into the first port 201 of the inner pipe 2, and the other end of the inner interface 902 penetrates through the outer interface 901. In order to facilitate connection with external pipes or devices, the external ports 901 and the internal ports 902 are both provided with an L-shaped pipe structure, and the external ports 901 and the internal ports 902 are fixedly connected.

The outer tube 1 is connected with an oil sample pipeline 19, and the oil sample pipeline 19 is connected with an oil sample valve 20.

The inner tube 2 is connected with a pressure gauge 18 and a thermometer 17, or is connected with other detection instruments.

In order to facilitate the installation of the first control valve 3 and the detection instruments such as the pressure gauge 18, the thermometer 17 and the like, the inner tube 2 is provided with a zigzag structure, and likewise, in order to facilitate the installation of the inner tube 2, the second control valve 4 and other devices, the outer tube 1 is provided with a zigzag structure.

Embodiment one:

As shown in fig. 1, the second control valve 4 includes a valve body 403, a valve core 401 is disposed in the valve body 403, the valve core 401 is in a ball structure, the valve core 401 is connected with the valve body 403 through a spring 402, the valve body 403 is provided with three ports, wherein a first port and a second port are respectively disposed at two sides of the valve core 401 and the spring 402, a third port is disposed at one side of the valve core 401 far away from the spring 402, the first port is connected with one of the ports of the first control valve 3, the third port is connected with the third port 102 of the outer tube 1, and the second port is communicated with the outlet 6 of the present invention.

The first control valve 3 is a four-way valve, and one of the two ports is communicated with the inlet 5 of the invention and is used for connecting a crude oil pipeline. The first control valve 3 is controlled manually or automatically.

In the working mode of this embodiment, as shown in fig. 2, crude oil enters the inner tube 2 and the outer tube 1 of the functional cabin through the first control valve 3 from the inlet 5, and at this time, the pressure in the outer tube 1 is larger than the force of the spring 402 in the second control valve 4, the third port of the second control valve 4 is opened, crude oil enters the valve body 403 from the third port and flows out from the outlet 6 through the second port, and in this mode, crude oil enters the functional cabin.

The bypass mode of this embodiment is shown in fig. 3, in which crude oil directly enters the valve body 403 of the second control valve 4 through the first control valve 3, at this time, the resultant force of the crude oil and the spring 402 in the valve body 403 is larger than the pressure in the outer tube 1, the third port of the second control valve 4 is closed, and the crude oil flows out of the outlet 6 through the second port, in which the crude oil does not enter the functional compartment and is isolated therefrom because the inlet of the inner tube 2 is closed by the first control valve 3.

In the multi-fluid mode of this embodiment, as shown in fig. 4, crude oil directly enters the valve body 403 of the second control valve 4 through the first control valve 3, external fluid is introduced into the internal port 902 of the switching head through the inner pipe 2, and also enters the valve body 403 of the second control valve 4, at this time, the resultant force of the crude oil, the external fluid and the spring 402 in the valve body 403 is greater than the pressure in the outer pipe 1, the third port of the second control valve 4 is closed, and the crude oil and the external fluid flow out from the outlet 6 through the second port.

The structure of the present embodiment can be applied to the following multiple scenarios, specifically including:

scene one, hydrogen sulfide gas remote automatic acquisition and detection:

As shown in fig. 7 and 8, in this scenario application, the single-ended interface 101 of the outer tube 1 connects with the blind plate 8.

Specifically, crude oil extracted from an oil well in an oil field contains natural gas and hydrogen sulfide, and the crude oil is periodically detected because the toxic gas of the hydrogen sulfide hurts human bodies. Because crude oil and natural gas are mixed with each other to increase the difficulty for gas collection, the current production unit is that a crude oil sampling valve at the oil wellhead is connected with a sealed container, and oil and gas are extracted for separation. When gas is collected, the protective clothing is required to be worn to carry a hydrogen sulfide detector, oil gas in the container is required to be treated after the gas is collected, the distance between some oil wells is long, the efficiency of manually collecting the gas is low, the production cost is high, and the risk that gas leakage damages the human body exists.

In the application of the scene, the invention can play a role in oil-gas separation so as to be convenient for automatically collecting the gas in the crude oil remotely and detecting the content of hydrogen sulfide.

In the invention, the inner tube 2 is sleeved inside the outer tube 1, and the inner tube 2 and the outer tube are concentrically arranged, the first port 201 of the inner tube 2 is positioned inside the outer tube 1 and lower than the single-end port 101 of the outer tube 1, and in addition, the volume of the outer tube 1 is twice or more than twice the volume of the inner tube 2. Due to the three structural characteristics, the functional cabin is subjected to oil-gas separation under the set conditions, and as shown in fig. 5 and 6, the functional cabin has the following oil-gas separation principle: crude oil pumped in the oil well is oil, water and natural gas mixed medium and has pressure of about 0.1-0.3 Mp, after entering the inner pipe 2, the crude oil is rapidly ejected through the first port 201 at the upper part of the inner pipe 2 and impacts the blind plate 8, part of gas in the crude oil is separated from the crude oil due to rapid impact, and the volume of the functional cabin outer pipe 1 is more than twice or more than twice that of the inner pipe 2, so that the increase of space enables the oil and the gas to have separated environmental conditions; at this time, the second port 202 of the inner tube 2 and the third port 102 of the outer tube 1 are closed at the same time, as shown in fig. 6, crude oil in the functional compartment stops flowing, oil gas at rest due to different specific gravity is thoroughly separated, the separated gas rises to the upper part of the functional compartment, and the crude oil is settled to the bottom, and the functional compartment has the function of oil-gas separation. The gas rises and stays at the upper position of the outer tube 1 after being separated, and the position can be connected with a hydrogen sulfide gas collecting device 10 to collect and detect the content of hydrogen sulfide in the gas.

In a specific operation, as shown in fig. 7, before the collection of the hydrogen sulfide gas, the first control valve 3 and the second control valve 4 are in a working mode, crude oil enters the inner tube 2 of the functional cabin through one port of the first control valve 3, and flows out from the outlet 6 through the outer tube 1 and the second control valve 4. When the gas collection is remotely instructed or automatically performed, the first control valve 3 is operated and switched from the working mode to the bypass mode, as shown in fig. 8, crude oil entering the functional cabin in the working mode is simultaneously closed to stop flowing due to the change of the modes, the second port 202 of the inner pipe 2 and the third port 102 of the outer pipe 1, the volume of the outer pipe 1 of the functional cabin is far greater than that of the inner pipe 2, the static oil gas is separated due to the increase of the space, the separated gas rises and stays at the upper part of the functional cabin, and the crude oil is settled to the lower part of the outer pipe 1 under the action of gravity. The gas in the upper part of the functional cabin enters the hydrogen sulfide gas collection device 10 for collection and detection.

The hydrogen sulfide gas collection device 10 comprises a choke tube 1002, the choke tube 1002 is arranged inside the outer tube 1 and is close to the single-end interface 101, the choke tube 1002 is vertically arranged, the top of the choke tube 1002 penetrates through the side wall of the outer tube 1 and then is connected with a foam catcher 1003 through an external pipeline, a pressure release valve is arranged on the upper portion of the foam catcher 1003, the foam catcher 1003 is connected with a hydrogen sulfide gas detector 1001, a hydrogen sulfide gas detection electromagnetic valve 1004 is arranged between the foam catcher 1003 and the hydrogen sulfide gas detector 1001, the hydrogen sulfide gas detector 1001 adopts existing equipment, and the content of hydrogen sulfide gas in gas is detected.

Scenario two, taking and placing carbon dioxide corrosion hanging piece 1102 without stopping production:

as shown in fig. 9, 10, in this scenario application, the single-ended interface 101 of the outer tube 1 connects the blind plate 8.

Specifically, carbon dioxide in crude oil corrodes pumps, pipes and rods of an oil well, and metal hanging sheets are required to be placed in the crude oil to detect the corrosion degree of the carbon dioxide. The common method for oil field is to make a movable bracket in the oil nozzle sleeve of the oil well mouth to put corrosion hanging piece, and take out and check after a period of time. The oil nozzle sleeve is sealed by a screwed plug, a temperature and pressure instrument and a probe are arranged on the screwed plug, the oil pumping unit is firstly shut down when the hanging piece is placed or taken out, and the instrument and the probe are detached and then the screwed plug is detached. Each time a corrosion coupon is placed or removed, it takes about 1.5 hours to stop production, which not only affects crude oil production, but also increases labor costs.

In the application of the invention in the scene, the carbon dioxide corrosion hanging piece 1102 can be taken and placed without stopping production, when the operation is specifically performed, the first control valve 3 is switched from the working mode to the bypass mode shown in fig. 10, after pressure release, the sealing cover 1103 on the taking and placing port 1101 is unscrewed, then the carbon dioxide corrosion hanging piece 1102 is placed into the functional cabin from the taking and placing port 1101, the sealing cover 1103 is screwed, and the first control valve 3 is restored to the working mode shown in fig. 9. The carbon dioxide etch coupon 1102 is removed and placed in the same manner.

The carbon dioxide corrosion detection device 11 comprises a taking and placing opening 1101 formed in the outer tube 1, the carbon dioxide corrosion hanging piece 1102 is connected through the taking and placing opening 1101, the carbon dioxide corrosion hanging piece 1102 extends to the inside of the outer tube 1, and the taking and placing opening 1101 is provided with a sealing cover 1103.

Scene three, no production stopping installation equipment:

As shown in fig. 3 and 11, in this scenario application, the blind plate 8 and the conversion head are connected by switching with the single-ended interface 101 of the outer tube 1.

Specifically, various detection and metering devices are required to be installed at the oil well mouth of an oil field, and an external device is directly connected with an oil pipeline by using a flange in the current common installation method. Because the external equipment is connected in series with the pipeline, the pipeline needs to be cut and welded with a flange, and then the equipment is installed. The pumping unit is required to be shut down in the installation process of external equipment, and the fire construction is performed, so that the problems of more nodes in the working flow, high safety risk in the process and low operation time are solved, the time of each construction is about 4-5 hours, the labor consumption is up to seven persons (five persons for construction and one side for monitoring each person), the construction is not matched with the development requirements of quick and safe construction of an oil field, and the pipelines are required to be recovered after the external equipment is dismantled. In addition, the external equipment installed at the wellhead is limited in number, size and direction by the limitations of the well site environment.

In the application of the invention in the scene, the equipment can be installed without stopping production, in the specific operation, the first control valve 3 is manually switched from work to a bypass mode (shown in fig. 3), a pressure release valve at the upper part of the foam catcher 1003 is opened to release the pressure in the functional cabin, then the pressure release valve is closed, the blind plate 8 connected with the single-end interface 101 is detached and replaced by a conversion head with the equipment 12 installed, and after the conversion head is installed, the first control valve 3 is restored to the work mode. The dismantling and installation process of the device 12 are the same, and the conversion head is only required to be replaced by the blind plate 8.

Scene four, installation oil measuring device without stopping production:

As shown in fig. 3 and 12, in this scenario application, the blind plate 8 and the conversion head are connected by switching to the single-ended interface 101 of the outer tube 1.

Specifically, because the accuracy of the metering equipment is affected by the natural gas contained in the crude oil, the wellhead of the oil well cannot be provided with special crude oil metering equipment. The crude oil yield of the oil well is estimated by using a work diagram at present, but because the ground ore of the oil well is complex, the work diagram measurement only estimates the approximate yield, and therefore, a production unit is connected with a special oil measuring device at the wellhead of the oil well for standard production every month. Because the connection oil metering device needs to be stopped in production and the disassembly and assembly of a plurality of processes are required, about 2 hours are required for connecting or dismantling the oil metering device each time, the crude oil yield is affected, and the production cost is increased.

In the application of the invention in the scene, the oil metering device can be quickly connected without stopping production, in the specific operation, the first control valve 3 is manually switched from the working mode to the bypass mode, the pressure release valve at the upper part of the foam catcher 1003 is opened to release the pressure in the functional cabin, then the pressure release valve is closed, the blind plate 8 connected with the single-end interface 101 is detached and replaced by a conversion head, the pipeline of the inlet 13 of the oil metering device and the pipeline of the outlet 14 of the oil metering device are respectively arranged on the inner interface 902 and the outer interface 901 of the conversion head, and then the first control valve 3 is restored to the working mode. The oil measuring device is removed and installed in the same process, and only the conversion head is replaced by the blind plate 8.

Scene five, water mixing and access without stopping production:

As shown in fig. 3 and 13, in this scenario application, the blind plate 8 and the conversion head are connected by switching to the single-ended interface 101 of the outer tube 1.

Specifically, oil fields have some oil well crude oil yields and lower water contents, and well sites have no heating equipment, and production enterprises need to open up the flow and weld pipelines to introduce the water. Because of stopping production and firing construction on an oil pipeline, the influence on the yield of crude oil also increases labor intensity and cost, and potential safety hazards are easily generated.

In the application of the invention in the scene, the water mixing of the oil well oil pipeline can be carried out without stopping production, when the specific operation is carried out, the first control valve 3 is manually switched from work to bypass mode, the pressure relief valve at the upper part of the foam catcher 1003 is opened to release the pressure in the functional cabin, then the pressure relief valve is closed, the blind plate 8 connected with the single-end interface 101 is detached and replaced by a conversion head, the water mixing pipeline 15 is connected with the internal joint 902 of the conversion head, and then the first control valve 3 is switched to multi-fluid mode.

Scene six, automatic pressure relief of oil well casing gas:

As shown in fig. 14, 15, in this scenario application, the single-ended interface 101 of the outer tube 1 connects the blind plate 8. The lower port of the first control valve 3 is connected to a sleeve 161, and the sleeve 161 is provided with a first check valve 162 and a second check valve 163, respectively, and the flow directions controlled by the first check valve 162 and the second check valve 163 are opposite.

Specifically, the oil well casing is sleeved outside the oil pipe, and is inserted into an underground oil layer like the oil pipe. Because reservoir crude oil contains natural gas and can continuously enter the well casing, the pressure in the well casing is also continuously increasing. In order to prevent safety accidents caused by the too high gas pressure, production units can arrange personnel for inspection. When the pressure reaches a certain value, the worker can open the oil well sleeve valve to release pressure. The manual pressure relief not only increases the production cost, but also easily causes the problem of production safety due to untimely pressure relief.

In the application of the invention in the scene, the gas pressure of the oil well casing can be automatically released, so that the efficiency is high, the cost for increasing the manual pressure relief is reduced, and the potential safety hazard caused by the gas overpressure in the oil well casing is avoided. In particular operation, the casing mouth of the lower casing 161 of the present invention is connected to an oil well casing. As shown in fig. 14, the first check valve 162 and the second check valve 163 are both normally closed; as shown in fig. 15, when the gas pressure in the well casing is greater than the crude oil pressure in the present invention, the first check valve 162 on the casing 161 is opened, and the well casing gas is introduced from the casing 161 through the first check valve 162 into the first control valve 3 to be mixed with the crude oil and depressurized. When the gas pressure in the oil well casing is less than or equal to the crude oil pressure, the first check valve 162 closes the valve port under the action of the compression spring.

Scene seven, automatic pressure relief of crude oil overpressure:

As shown in fig. 14, 16, in this scenario application, the single-ended interface 101 of the outer tube 1 connects the blind plate 8. The lower port of the first control valve 3 is connected to a sleeve 161, and the sleeve 161 is provided with a first check valve 162 and a second check valve 163, respectively, and the flow directions controlled by the first check valve 162 and the second check valve 163 are opposite.

Specifically, in oil well production, crude oil is conveyed and interrupted due to factors such as blockage or misoperation of a pipeline, the uninterrupted operation of an oil well pumping unit can enable the pressure of the pipeline to rise rapidly, if the pumping unit is not shut down or crude oil in the pipeline is discharged in time, the motor of the pumping unit is damaged due to the fact that the pressure of the pipeline is too high, and safety accidents are caused. The production unit is therefore very concerned with the line overpressure and the control sequences of the different line valves are explicitly specified in the production operating specification.

In the scene application, the invention can automatically release the overpressure of the oil pipeline, has high efficiency, reduces the cost of increasing manual pressure release, and avoids equipment damage and safety accidents of the oil pipeline caused by over-high pressure. In particular operation, the second check valve 163 is a high pressure valve, normally in a closed state (as shown in fig. 14). After the pressure of the crude oil in the invention is larger than the set value of the second check valve 163, as shown in fig. 16, the valve port of the second check valve 163 is opened, and the crude oil enters the oil well casing through the second check valve 163 and the casing 161 by the first control valve 3, so that the pressure is relieved. When the crude oil pressure is lower than the set value of the second check valve 163, the valve port is closed.

Embodiment two:

As shown in fig. 17, the present embodiment has substantially the same structure as the first embodiment, except that in the present embodiment, the first control valve 3 is a three-way valve, and two control modes, i.e., manual and automatic, are adopted.

In addition, the structure of the present embodiment is also applicable to the first to fifth scenes, and the installation manner and operation procedure of the present embodiment in the above scenes are basically the same as those of the first embodiment.

Embodiment III:

As shown in fig. 18, the present embodiment has substantially the same structure as the first embodiment, except that in the first embodiment, the second control valve 4 is a three-way valve, the valve element 401 of the second control valve 4 is affected by the fluid distribution state of the first control valve 3, so as to control the flow channel of the second control valve 4, while in the second embodiment, the second control valve 4 is a three-way valve, which is independently controlled and not affected by the fluid distribution state of the first control valve 3, and the second control valve 4 can be controlled manually or automatically.

In addition, the structure of the present embodiment is also applicable to the first to seventh scenes, and the installation manner and operation procedure of the present embodiment in the above scenes are substantially the same as those of the first embodiment.

Embodiment four:

As shown in fig. 19, the structure of the present embodiment is basically the same as that of the second embodiment, except that in the second embodiment, the second control valve 4 is a three-way valve, in which the valve core 401 of the second control valve 4 is affected by the fluid distribution state of the first control valve 3 to control the flow channel of the second control valve 4, while in the second embodiment, the second control valve 4 is a three-way valve, which is independently controlled and not affected by the fluid distribution state of the first control valve 3, the second control valve 4 can be controlled manually or automatically.

The structure of the present embodiment is also applicable to the first to fifth scenes, and the installation mode and the operation procedure of the present embodiment in the above scenes are basically the same as those of the second embodiment.

In addition, the structure of the present embodiment can also be applied to the following scenarios, specifically:

scene eight, quick pressure release of oil pipeline perforation:

As shown in fig. 20 and 21, in this scenario application, the blind plate 8 and the conversion head are connected by switching to the single-ended interface 101 of the outer tube 1.

At present, the oil delivery pipeline of the old oil field is seriously aged, and pipeline perforation happens at present. Because the pipeline valve interval is longer and the pressure in the pipeline is higher, crude oil can continuously emerge from the perforation position even if the valves at the two ends of the pipeline are closed when perforation occurs. Most of oil pipelines are laid below the ground, long time is needed for finding the perforated part, the fault part is often found, the waste of crude oil and environmental pollution are serious, and the pressure leakage blocking is difficult for maintenance personnel due to the fact that the pipelines contain pressure.

In the application of the invention in the scene, when the invention is used for perforating an oil pipeline, pressure data and position information are remotely transmitted, remote alarm is carried out, the position information is uploaded, maintenance personnel can conveniently and quickly find the perforation position, the invention has remote control, crude oil entering the perforation pipeline can be closed at the first time, and meanwhile, the oil pump 21 can be quickly installed to pump and recycle the crude oil in the perforation pipeline for quick pressure relief. The scene is high in quick-acting rate of searching the perforation position, the waste and pollution of crude oil are reduced, and the labor intensity and the production cost are reduced.

Specifically, the structure of the present invention installed in an oil pipeline is shown in fig. 20 under normal conditions. When the oil pipeline is perforated, the pressure alarms 22 of the invention installed at the two ends of the pipeline remotely alarm and upload position information because of the pressure drop of the crude oil leakage pipeline, the two devices of the invention at the two ends of the perforated pipeline are remotely disconnected from the external pipeline at the first time after the dispatching room of the production enterprise receives the pressure drop alarm of the crude oil leakage pipeline, as shown in fig. 21, simultaneously, a maintainer quickly finds out the two devices of the invention of the alarm according to the position information, respectively, removes the blind plate 8 of the single-end interface 101, changes the blind plate into a conversion head, installs the oil pump 21, opens the three-way valves related to the two devices and the perforated pipeline after the oil pump 21 is installed, opens the two oil pumps 21 to recycle and decompress crude oil, and other maintainers can search the perforation position between the two devices and perform leak blocking.

Claims (10)

1. The integrated fluid control device for multi-scene application is characterized by comprising a functional cabin, wherein the functional cabin comprises an inner pipe (2) and an outer pipe (1), two ends of the inner pipe (2) are respectively provided with a first port (201) and a second port (202), two ends of the outer pipe (1) are respectively provided with a single-ended port (101) and a third port (102), the inner pipe (2) is sleeved in the outer pipe (1) and is concentrically arranged, the first port (201) of the inner pipe (2) is positioned inside the outer pipe (1) and is lower than the single-ended port (101) of the outer pipe (1), and the inner pipe (2) penetrates through the outer pipe (1) and the second port (202) of the inner pipe (2) is positioned outside the outer pipe (1);

the volume of the outer tube (1) is twice or more than that of the inner tube (2);

The second port (202) is connected with the first control valve (3), the third port (102) is connected with the second control valve (4), the first control valve (3) is provided with at least three through holes, the second control valve (4) is provided with at least three through holes, and one of the through holes of the first control valve (3) is connected with one of the through holes of the second control valve (4);

The functional cabin is connected with one or more structures of a hydrogen sulfide gas collecting device (10), a carbon dioxide corrosion detecting device (11), a thermometer (17), a pressure gauge (18) and an oil sample valve (20).

2. The integrated fluid control device for multi-scenario applications according to claim 1, wherein the second control valve (4) comprises a valve body (403), a valve core (401) is arranged in the valve body (403), the valve core (401) is connected with the valve body (403) through a spring (402), the valve body (403) is provided with three through holes, wherein a first through hole and a second through hole are respectively arranged at two sides of the valve core (401) and the spring (402), a third through hole is arranged at one side of the valve core (401) far away from the spring (402), the first through hole is connected with one through hole of the first control valve (3), and the third through hole is connected with the third port (102) of the outer tube (1);

The first control valve (3) is a four-way valve or a three-way valve.

3. The integrated fluid control device for multi-scenario applications according to claim 2, wherein the first control valve (3) is a four-way valve, a lower port of the first control valve (3) is connected to a sleeve (161), a first check valve (162) and a second check valve (163) are respectively disposed on the sleeve (161), and the flow directions controlled by the first check valve (162) and the second check valve (163) are opposite.

4. The integrated fluid control device for multi-scenario applications according to claim 1, wherein the second control valve (4) is a three-way valve and the first control valve (3) is a four-way valve or a three-way valve.

5. The integrated fluid control device for multi-scenario applications according to claim 4, wherein the first control valve (3) is a four-way valve, a lower port of the first control valve (3) is connected to a sleeve (161), a first check valve (162) and a second check valve (163) are respectively disposed on the sleeve (161), and the flow directions controlled by the first check valve (162) and the second check valve (163) are opposite.

6. The integrated fluid control device for multi-scenario applications according to claim 1, characterized in that the single-ended interface (101) of the outer tube (1) is connected to a blind plate (8) or a switching head, the single-ended interface (101) of the outer tube (1) being provided with a clamp joint (7).

7. The integrated fluid control device for multi-scenario applications according to claim 6, wherein the switching head comprises an outer interface (901), an inner interface (902) is arranged in the outer interface (901), two ends of the outer interface (901) are open, one end of the outer interface (901) is connected with the single-ended interface (101) of the outer pipe (1), two ends of the inner interface (902) are open, one end of the inner interface (902) is inserted into the first port (201) of the inner pipe (2) after passing through the single-ended interface (101) of the outer pipe (1), and the other end of the inner interface (902) penetrates to the outside of the outer interface (901).

8. The integrated fluid control device for multi-scenario application according to claim 1, wherein the hydrogen sulfide gas collecting device (10) comprises a choke tube (1002), the choke tube (1002) is arranged inside the outer tube (1) and is close to the single-end interface (101), the choke tube (1002) is vertically arranged, the top of the choke tube (1002) penetrates through the side wall of the outer tube (1) and then is connected with a foam catcher (1003) through an external pipeline, the foam catcher (1003) is connected with a hydrogen sulfide gas detector (1001), and a hydrogen sulfide gas detection electromagnetic valve (1004) is arranged between the foam catcher (1003) and the hydrogen sulfide gas detector (1001).

9. The integrated fluid control device for multi-scenario applications according to claim 1, wherein the carbon dioxide corrosion detection device (11) comprises a pick-and-place port (1101) formed in the outer tube (1), the carbon dioxide corrosion hanging piece (1102) is connected through the pick-and-place port (1101), the carbon dioxide corrosion hanging piece (1102) extends to the inside of the outer tube (1), and the pick-and-place port (1101) is provided with a sealing cover (1103).

10. The integrated fluid control device for multi-scenario applications according to claim 1, wherein an oil sample pipe (19) is connected to the outer pipe (1), and an oil sample valve (20) is connected to the oil sample pipe (19);

the inner tube (2) is connected with a pressure gauge (18) and a thermometer (17).