CN112556785A - Device and method for measuring geothermal well water level - Google Patents
Device and method for measuring geothermal well water level Download PDFInfo
- Publication number
- CN112556785A CN112556785A CN202011439610.3A CN202011439610A CN112556785A CN 112556785 A CN112556785 A CN 112556785A CN 202011439610 A CN202011439610 A CN 202011439610A CN 112556785 A CN112556785 A CN 112556785A
- Authority
- CN
- China
- Prior art keywords
- pipe
- gas
- geothermal well
- measuring
- water level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention relates to the technical field of well logging, in particular to a device and a method for measuring geothermal well water level. The device for measuring the water level of the geothermal well comprises a shell, a detection pipeline, a pressure detection device, an air source and an air delivery pipe; the detection pipeline and the pressure detection device are arranged in the shell; the detection pipeline comprises three pipe orifices, wherein the three pipe orifices are a first pipe orifice, a second pipe orifice and a third pipe orifice respectively; the first pipe orifice is communicated with the gas conveying pipe, the detection end of the pressure detection device is arranged in the second pipe orifice in an inserting mode, and the gas source is communicated with the third pipe orifice. The gas pipe is stretched into the geothermal well to be detected, gas is supplied through the gas source, after the pressure value detected by the pressure detection device is stable, the depth of the end part of the gas pipe from the liquid level can be obtained according to the pressure value, and the water level of the geothermal well can be obtained according to the depth of the gas pipe entering the geothermal well and the depth of the end part of the gas pipe from the liquid level. The measuring device can replace manual logging, has high precision and can measure the liquid level in real time.
Description
Technical Field
The invention relates to the technical field of well logging, in particular to a device and a method for measuring geothermal well water level.
Background
At present, the water level of a geothermal well is generally measured and recorded by manual operation, the error is large during measurement, and the underground water level cannot be monitored in real time.
Disclosure of Invention
The invention aims to provide a device for measuring the water level of a geothermal well, which can solve the problems that the error of manually measuring the water level of the well is large and the water level cannot be detected in real time in the prior art;
a second object of the present invention is to provide a method for measuring geothermal well water level, which uses the device for measuring geothermal well water level as described above to measure geothermal well water level.
The invention provides a device for measuring the water level of a geothermal well, which comprises a shell, a detection pipeline, a pressure detection device, an air source and an air delivery pipe, wherein the shell is provided with a plurality of air outlets;
the detection pipeline and the pressure detection device are arranged in the shell;
the detection pipeline comprises three pipe orifices, wherein the three pipe orifices are a first pipe orifice, a second pipe orifice and a third pipe orifice respectively;
the first pipe orifice is communicated with the gas conveying pipe, the detection end of the pressure detection device is inserted into the second pipe orifice, and the gas source is communicated with the third pipe orifice.
Preferably, a first electromagnetic valve is arranged on a connecting pipeline between the first pipe orifice and the gas conveying pipe.
Preferably, the device for measuring the geothermal well water level further comprises an exhaust pipe;
one end of the exhaust pipe is communicated with the third pipe orifice and the air source, and the other end of the exhaust pipe is provided with a second electromagnetic valve.
Preferably, a bottom plate and a panel are arranged in the shell;
the bottom plate and the face plate are oppositely arranged and are connected through a connecting rod;
the detection pipeline and the pressure detection device are fixed on the bottom plate, and the panel is provided with an air source connector and a gas pipe connector;
the first pipe orifice of the detection pipeline is connected with the gas pipe connecting port through a gas outlet pipe, and the third pipe orifice is communicated with the gas source connecting port through a gas inlet pipe;
the gas pipe is connected with the gas pipe connecting port, and the gas source is connected with the gas source connecting port.
Preferably, the housing comprises a box body and an upper cover arranged on the box body;
the bottom plate, the panel and the box body are detachably connected, and a lifting hook is arranged on the panel;
the inner surface of the upper cover is provided with a flexible buffer layer.
Preferably, the air source connector and the air pipe connector are quick pipe connectors.
Preferably, the panel is a transparent plate;
the geothermal well water measuring device further comprises a display screen, and the display screen is arranged on the inner side of the panel.
A method of measuring geothermal well water level comprising the steps of:
connecting a first end of a gas pipe with a first pipe orifice, then extending a second end of the gas pipe into the geothermal well, enabling the second end of the gas pipe to be positioned below the liquid level, and recording the length H of the gas pipe positioned in the geothermal well;
gas is conveyed by a gas source, the gas discharged by the gas source enters the gas pipe through a detection pipeline, and after the detection value of the pressure detection device is constant, the distance h from the second end of the gas pipe to the liquid level is calculated according to the constant pressure value;
and calculating according to H and H to obtain the liquid level of the geothermal well.
Preferably, the air conveying pipe is provided with a scribed line for recording the length of the air conveying pipe.
Preferably, after the liquid level detection is completed for one time, the method further comprises the step of discharging gas in the detection pipeline, and after the gas in the detection pipeline is discharged, the gas is transported through the gas source again to perform secondary liquid level measurement.
Has the advantages that:
stretch into the geothermol power well that awaits measuring with the gas-supply pipe, then through the air feed, treat that the pressure value that pressure measurement device detected stabilizes the back, can obtain the degree of depth of gas-supply pipe tip apart from the liquid level according to the pressure value, can obtain the water level of geothermol power well according to the degree of depth that the gas-supply pipe got into the geothermol power well and the degree of depth of gas-supply pipe tip apart from the liquid level. The measuring device can replace manual logging, has high precision and can measure the liquid level in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a device for measuring geothermal well water level according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at "I";
FIG. 3 is a schematic diagram of a device for measuring geothermal well water level according to an embodiment of the present invention;
fig. 4 is a schematic diagram (with a flushing pipeline) of a geothermal well water level measuring device provided by the embodiment of the invention.
Description of reference numerals:
1: a housing; 2: detecting a pipeline; 3: a pressure detection device; 4: a gas source; 5: a gas delivery pipe; 6: a first solenoid valve; 7: a second solenoid valve; 8: a display screen; 9: a water pump; 10: a water inlet pipe; 11: a drain pipe; 12: a water tank; 13: a measurement chamber; 14: a via structure; 15: a temperature sensor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, the present embodiment provides a device for measuring a geothermal well water level, which includes a casing 1, a detection pipeline 2, a pressure detection device 3, an air source 4 and an air pipe 5.
The detection line 2 and the pressure detection device 3 are disposed within the housing 1.
The detection pipeline 2 comprises three nozzles, wherein the three nozzles are a first nozzle, a second nozzle and a third nozzle respectively.
The first pipe orifice is communicated with the gas pipe 5, the detection end of the pressure detection device 3 is arranged and inserted in the second pipe orifice, and the gas source 4 is communicated with the third pipe orifice.
In this embodiment, stretch into the geothermol power well that awaits measuring with gas pipe 5, then through the air supply air feed, treat that the pressure value that pressure measurement device detected stabilizes the back, can obtain the degree of depth of gas pipe tip apart from the liquid level according to the pressure value, can obtain the water level of geothermol power well according to the degree of depth that gas pipe 5 got into the geothermol power well and the degree of depth of 5 tip of gas pipe apart from the liquid level. The measuring device can replace manual logging, has high precision and can measure the liquid level in real time.
The pressure detection device 3 is a pressure sensor, and the parameters of the pressure sensor are as follows: the power supply is 24VDC, the maximum withstand voltage is 1.6Mpa, the measurement range is 0-20 m, the feedback signal is 4-20 mA, and the precision is 0.2%.
A first electromagnetic valve 6 is arranged on the connecting pipeline between the first pipe orifice and the gas conveying pipe. The first electromagnetic valve 6 controls the air source to convey air into the air conveying pipe 5.
The device for measuring the water level of the geothermal well further comprises an exhaust pipe, one end of the exhaust pipe is communicated with the third pipe opening and the air source, and the other end of the exhaust pipe is provided with a second electromagnetic valve 7.
The gas in the detection pipe 2 can be discharged by the second solenoid valve 7, and after the gas in the detection pipe 2 is discharged, the measurement of the liquid level in the geothermal well can be performed again.
A bottom plate and a panel are arranged in the shell 1.
The bottom plate and the face plate are oppositely arranged and are connected through a connecting rod.
The detection pipeline 2 and the pressure detection device 3 are fixed on the bottom plate, and an air source connector and a gas pipe connector are arranged on the panel.
The first pipe orifice of the detection pipeline 2 is connected with the gas pipe connecting port through the gas outlet pipe, and the third pipe orifice is communicated with the gas source connecting port through the gas inlet pipe.
The gas pipe 5 is connected with the gas pipe connector, and the gas source 4 is connected with the gas source connector.
In this embodiment, through gas-supply pipe 5, air supply 4 respectively with gas-supply pipe connector, air supply connector, can realize making split type structure with gas-supply pipe 5, air supply 4 and shell, carry out the well logging in-process, again with gas-supply pipe, air supply respectively connect on gas-supply pipe connector, air supply connector can, under other circumstances, can exist gas-supply pipe, air supply and shell alone, be convenient for measure geothermal well water level device's use and removal.
The shell 1 comprises a box body and an upper cover arranged on the box body, a bottom plate, a panel and the box body are detachably connected, and a lifting hook is arranged on the panel. The inner surface of the upper cover is provided with a flexible buffer layer.
Through setting up bottom plate and panel detachable in the shell to set up the lifting hook on the panel, be convenient for shift out the structure that bottom plate and panel are constituteed from the shell, after the structure on the bottom plate broke down, shifted out the back in the shell with floor and panel, be convenient for to the maintenance of structure on the bottom plate.
The air source connector and the gas pipe connector are quick pipe connectors. Through the setting of the quick pipe connecting opening, the gas pipe and the gas source are convenient to be connected with the gas pipe connecting opening and the gas source connecting opening respectively.
The panel is the transparent plate, measures geothermol power well water device still includes display screen 8, and display screen 8 sets up the inboard at the panel. The display screen 8 is used for displaying geothermal well water level information. If measure geothermal well water level device still includes the treater, display screen 8 and pressure measurement device all are connected with the treater electricity, and the treater obtains the height of gas-supply pipe tip apart from the liquid level according to pressure measurement device detection value. And then the processor obtains the water level information of the geothermal well according to the length of the gas pipe in the geothermal well and the height of the end part of the gas pipe away from the liquid level.
In addition, the device for measuring the water level of the geothermal well further comprises a flushing pipeline, and the flushing pipeline is connected with a gas conveying pipe. The flushing pipeline comprises a water pump 9, a water inlet pipe 10 and a water outlet pipe 11, wherein the water pump 9 is communicated with a water tank 12 through the water inlet pipe 10, and the water pump 9 is communicated with the air delivery pipe 5 through the water outlet pipe 11.
In the long-term use of gas-supply pipe 5, gas-supply pipe 5 probably takes place to block up, takes place to block up the back when gas-supply pipe 5, can lead to water level measurement result to appear the error. At the moment, the first electromagnetic valve 6 can be closed, water is supplied into the gas conveying pipe 5 through the water pump 9, the gas conveying pipe 5 is washed through water flow, smoothness of the gas conveying pipe 5 is guaranteed, and therefore accuracy of water level measurement is guaranteed.
In this embodiment, there is also provided a method of measuring a geothermal well water level, comprising the steps of:
the first end of the gas pipe 5 is connected with the first pipe orifice, then the second end of the gas pipe 5 extends into the geothermal well, the second end of the gas pipe 5 is positioned below the liquid level, and the length H of the gas pipe 5 positioned in the geothermal well is recorded.
And (3) conveying gas through the gas source, wherein the gas discharged from the gas source enters the gas conveying pipe 5 through the detection pipeline, and after the detection value of the pressure detection device is constant, the distance h from the second end of the gas conveying pipe to the liquid level is calculated according to the constant pressure value.
And calculating according to H and H to obtain the liquid level of the geothermal well.
The gas pipe 5 is provided with a scribed line for recording the length of the gas pipe 5. The length H of the gas pipe 5 entering the geothermal well can be determined by the score lines on the gas pipe 5.
In order to keep the air pipe 5 in a vertical state in the geothermal well, a plumb bob may be provided at the bottom of the air pipe 5.
Set up measurement chamber 13 in the bottom of gas-supply pipe 5, this measurement chamber 13 is the cavity structure to set up a plurality of through-hole structures 14 on the lateral wall of cavity structure, gas-supply pipe 5 and measurement chamber 13 fixed connection, and the inner space intercommunication of gas-supply pipe 5 and measurement chamber 13. The water of geothermal well can get into measuring chamber 13 through hole structure 14, makes measuring chamber 13 and the interior pressure balance state that is in of geothermal well, and this kind of structure that sets up can prevent that debris from blockking up the mouth of pipe of gas-supply pipe 5, in addition, also can increase the weight of 5 bottoms of gas-supply pipe, makes gas-supply pipe 5 keep vertical state in geothermal well.
The measuring chamber 13 can be further provided with a temperature sensor 15, and the temperature of the water in the geothermal well can be measured through the temperature sensor 15, namely the depth and the temperature of the liquid level of the geothermal well can be measured simultaneously. The temperature sensor 15 is a PT100 temperature sensor.
The geothermal well also has equipment such as cables, and can tie the gas pipe 5 on the cable, makes the gas pipe get into the geothermal well along with the cable together, and this kind of mode also can guarantee that the gas pipe is in vertical state in the well.
In addition, in the actual production process, a plurality of geothermal wells need to be measured, and one gas pipe 5 is placed in each geothermal well in advance, so that when the liquid level of the geothermal well needs to be measured, the gas pipe in the well to be measured is connected with the gas pipe connecting port.
After the liquid level detection is finished for one time, the method also comprises the step of discharging gas in the detection pipeline, and after the gas in the detection pipeline is discharged, the gas is transported through the gas source again to carry out secondary measurement of the liquid level.
Through secondary measurement, the accuracy of geothermal well liquid level detection can be improved.
The specific steps of calculating the distance h between the second end of the gas transmission pipe and the liquid level according to the constant pressure value are as follows:
according to the pressure transmission principle, when the gas in the gas pipe 5 reaches dynamic balance (when the detection value of the pressure detection device is constant), the pressure born by the second end of the gas pipe 5 is transmitted to the pressure sensor through the gas pipe 5, so that the pressure born by the second end of the gas pipe 5 is equal to the pressure born by the pressure sensor, and the liquid pressure at the position of the second end of the gas pipe can be obtained according to the pressure value detected by the pressure sensor and the cross-sectional area of the gas pipe.
Further, H can be calculated according to P ═ ρ gh, and the liquid level H1 in the well is H-H when the depth of the nitrogen gas pipe penetrating into the well is known to be H. The value of the liquid level H1 can be directly displayed on the display screen 8 through the data processor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A device for measuring the water level of a geothermal well is characterized by comprising a shell, a detection pipeline, a pressure detection device, an air source and an air delivery pipe;
the detection pipeline and the pressure detection device are arranged in the shell;
the detection pipeline comprises three pipe orifices, wherein the three pipe orifices are a first pipe orifice, a second pipe orifice and a third pipe orifice respectively;
the first pipe orifice is communicated with the gas conveying pipe, the detection end of the pressure detection device is inserted into the second pipe orifice, and the gas source is communicated with the third pipe orifice.
2. The device for measuring the water level of the geothermal well according to claim 1, wherein a first electromagnetic valve is arranged on a connecting pipeline between the first pipe orifice and the gas conveying pipe.
3. The device for measuring geothermal well water level according to claim 1, further comprising an exhaust pipe;
one end of the exhaust pipe is communicated with the third pipe orifice and the air source, and the other end of the exhaust pipe is provided with a second electromagnetic valve.
4. The apparatus of claim 1, wherein a floor and a face plate are provided within the housing;
the bottom plate and the face plate are oppositely arranged and are connected through a connecting rod;
the detection pipeline and the pressure detection device are fixed on the bottom plate, and the panel is provided with an air source connector and a gas pipe connector;
the first pipe orifice of the detection pipeline is connected with the gas pipe connecting port through a gas outlet pipe, and the third pipe orifice is communicated with the gas source connecting port through a gas inlet pipe;
the gas pipe is connected with the gas pipe connecting port, and the gas source is connected with the gas source connecting port.
5. The device for measuring the water level of a geothermal well according to claim 4, wherein the housing comprises a box body and an upper cover arranged on the box body;
the bottom plate, the panel and the box body are detachably connected, and a lifting hook is arranged on the panel;
the inner surface of the upper cover is provided with a flexible buffer layer.
6. The device for measuring the water level of the geothermal well according to claim 4, wherein the air source connecting port and the air conveying pipe connecting port are quick pipe connectors.
7. The apparatus of claim 4, wherein the panel is a transparent plate;
the geothermal well water measuring device further comprises a display screen, and the display screen is arranged on the inner side of the panel.
8. A method of measuring geothermal well water level comprising the steps of:
connecting a first end of a gas pipe with a first pipe orifice, then extending a second end of the gas pipe into the geothermal well, enabling the second end of the gas pipe to be positioned below the liquid level, and recording the length H of the gas pipe positioned in the geothermal well;
gas is conveyed by a gas source, the gas discharged by the gas source enters the gas pipe through a detection pipeline, and after the detection value of the pressure detection device is constant, the distance h from the second end of the gas pipe to the liquid level is calculated according to the constant pressure value;
and calculating according to H and H to obtain the liquid level of the geothermal well.
9. The method of claim 8 wherein the gas delivery conduit is provided with a score line for recording the length of the gas delivery conduit.
10. The method for measuring the water level of the geothermal well according to claim 8, wherein after the primary liquid level detection is completed, the method further comprises the step of discharging gas in the detection pipeline, and after the gas in the detection pipeline is completely discharged, the gas is conveyed by the gas source again to perform secondary liquid level measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439610.3A CN112556785A (en) | 2020-12-11 | 2020-12-11 | Device and method for measuring geothermal well water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439610.3A CN112556785A (en) | 2020-12-11 | 2020-12-11 | Device and method for measuring geothermal well water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112556785A true CN112556785A (en) | 2021-03-26 |
Family
ID=75060591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011439610.3A Pending CN112556785A (en) | 2020-12-11 | 2020-12-11 | Device and method for measuring geothermal well water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112556785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624140A (en) * | 2023-07-26 | 2023-08-22 | 山东省地质测绘院 | Geothermal well liquid level measuring device and measuring method |
-
2020
- 2020-12-11 CN CN202011439610.3A patent/CN112556785A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624140A (en) * | 2023-07-26 | 2023-08-22 | 山东省地质测绘院 | Geothermal well liquid level measuring device and measuring method |
| CN116624140B (en) * | 2023-07-26 | 2023-09-29 | 山东省地质测绘院 | Geothermal well liquid level measuring device and measuring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209459639U (en) | Engineering level settlement measurement system | |
| JP2009133863A (en) | Level-measuring apparatus and method for measuring the level of fluid food in a tank | |
| CN112556785A (en) | Device and method for measuring geothermal well water level | |
| CN213455730U (en) | Device for measuring geothermal well water level | |
| CN109229275B (en) | Inclination test device and method for bottom-supported wind power installation ship | |
| CN109751045B (en) | Overflow lost circulation monitoring method and device | |
| CN107041752B (en) | Weighing type vital capacity measuring device | |
| CN104748903B (en) | Liquid-gas conversion pressure measurement device and pressure measurement device with synchronous electrical measurement and digital display for tests | |
| CN216791618U (en) | Ground source heat pump engineering buried pipe well quality detection device | |
| CN110319909A (en) | A kind of magnetic float level indicator calibrating installation | |
| CN214373188U (en) | Gas pressure and flow testing device | |
| CN209820557U (en) | Pump station flow measuring and calculating device based on volume method | |
| CN209979024U (en) | Oil tank liquid level monitoring system | |
| CN106323405A (en) | Intelligent air blowing type liquid level measurement device | |
| CN209163759U (en) | A kind of overflow leakage monitoring device | |
| CN209214840U (en) | System for power battery pack seawater soak test | |
| CN206695810U (en) | A kind of concentration detection system using integration technology | |
| CN204831449U (en) | Intelligence formula liquid level measurement device of blowing | |
| CN219320040U (en) | Water permeable brick water permeability coefficient detection equipment | |
| CN217505545U (en) | Desulfurization absorption tower thick liquid density and pH joint measurement system | |
| CN218468821U (en) | LNG low temperature immersed pump test platform | |
| CN107174249B (en) | Differential pressure type vital capacity measuring device | |
| CN113639679B (en) | Detection device and method for measuring thickness of ultra-thick floor slab | |
| CN105277251A (en) | Liquid level meter with double measuring pipes | |
| CN216595090U (en) | Circulating water dynamic simulation test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |