CN111663929B - Multi-section fractured horizontal well production profile testing pipe column - Google Patents
Multi-section fractured horizontal well production profile testing pipe column Download PDFInfo
- Publication number
- CN111663929B CN111663929B CN202010450232.2A CN202010450232A CN111663929B CN 111663929 B CN111663929 B CN 111663929B CN 202010450232 A CN202010450232 A CN 202010450232A CN 111663929 B CN111663929 B CN 111663929B
- Authority
- CN
- China
- Prior art keywords
- oil
- single flow
- eye
- pipe
- containing cavity
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention discloses a multi-section fractured horizontal well fluid production section testing tubular column which comprises a tubular column connected with an oil pipe and a plurality of single flow eye pipes arranged in the tubular column, wherein each single flow eye pipe is correspondingly arranged in a production interval, and a packer is arranged between every two adjacent single flow eye pipes; an oil liquid containing cavity is arranged in the single flow eye pipes, a tracer is arranged in the oil liquid containing cavity, and the types of the tracers in the single flow eye pipes are different; the oil liquid containing cavity is provided with an inlet and an outlet, the inlet of the oil liquid containing cavity is communicated with the oil layer perforation corresponding to the production interval, the outlet of the oil liquid containing cavity is connected with the inlet of the single flow channel, and the outlet of the single flow channel sequentially penetrates through the single flow eye tube and the packer at the front end of the single flow channel to be communicated with the oil tube; the test pipe column can obtain the water yield and the oil yield corresponding to each production interval of an underground oil layer, so that the production dynamics of each production interval can be determined, the accurate test of the liquid production profile of the multi-section fractured horizontal well is realized, and effective basis is provided for implementing the segmented oil production and controlling water and stabilizing oil in the later stage of the horizontal well.
Description
Technical Field
The invention belongs to the field of oil field oil extraction engineering, and particularly relates to a multi-section fractured horizontal well production profile testing tubular column.
Background
In the process of oil exploitation, because horizontal wells are long in horizontal sections, fracturing sections are large in number, capacity contributions of different liquid production sections are different, and interlayer interference exists in the exploitation process, in order to improve the recovery ratio of reservoirs of the horizontal wells, the reservoirs need to be layered and segmented in a targeted manner, and the liquid production contributions of the sections need to be mastered.
The existing liquid production profile testing technology can realize liquid production profile testing in a certain degree, but also has the problems of high testing difficulty and interlayer interference. The following disadvantages mainly exist: the method has the advantages that the conventional liquid production profile test has the problem that the crawler meets the block, so that the test success rate is low; instrument response is poor under the conditions of small flow and fluid layering, for example, the starting displacement of a turbine flowmeter is large; thirdly, the mutual interference of each production interval is tested inaccurately by the tracer test.
Disclosure of Invention
The invention aims to provide a multi-section fractured horizontal well fluid production section testing tubular column, which solves the problems of high difficulty and interlayer interference of the current fluid production section testing and is suitable for testing the fluid production section of the multi-section fractured horizontal well in an oil field.
The invention is realized by the following technical scheme:
a multi-section fractured horizontal well fluid production section testing tubular column comprises a tubular column connected with an oil pipe and a plurality of single-flow eye tubes arranged inside the tubular column, wherein each single-flow eye tube is correspondingly arranged in a production interval, and a packer is arranged between every two adjacent single-flow eye tubes;
an oil liquid containing cavity is arranged in the single flow eye pipes, a tracer is arranged in the oil liquid containing cavity, and the types of the tracers in the single flow eye pipes are different;
the oil liquid containing cavity is provided with an inlet and an outlet, the inlet is communicated with the oil layer perforation corresponding to the production interval, the outlet is connected with the inlet of the single flow channel, and the outlet of the single flow channel sequentially penetrates through the single flow eye tube and the packer at the front end of the single flow channel to be communicated with the oil tube.
Preferably, single flow eye pipe includes outer tube and coaxial setting at its inside inner tube, and the end plate welding is passed through at the both ends of inner tube and outer tube, makes the space that forms between inner tube, outer tube and two end plates hold the chamber for fluid.
Preferably, the end portion is of annular configuration having an inner diameter and an outer diameter corresponding to the diameters of the inner and outer tubes, respectively.
Preferably, the inlet of the oil liquid accommodating cavity is a plurality of liquid inlets arranged on the outer pipe wall; the outlet of the oil liquid containing cavity is a liquid outlet hole arranged on the inner pipe wall, and the liquid outlet hole is connected with the single-flow channel.
Preferably, the inner pipe is provided with a filler inside, and the filler is used for fixing the single flow channel passing through the inner pipe.
Preferably, a limiting pipeline is arranged between the single flow eye tube and the packer and used for limiting the single flow eye tube.
Preferably, an oil well pump is arranged in the oil pipe and connected with the sucker rod.
Preferably, the end of the string is connected to the lower end of the tubing via a packer.
Preferably, an end plate of the monocular flow tube at the deepest part of the tubular column is provided with a plug.
Preferably, the tracer is two solid tracers, namely a water-soluble tracer and an oil-soluble tracer.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a multi-section fractured horizontal well production profile testing tubular column which comprises a tubular column and a plurality of single-flow eye pipes arranged in the tubular column, wherein a packer is arranged between every two adjacent single-flow eye pipes, different types of tracers are arranged in the single-flow eye pipes, each single-flow eye pipe is correspondingly communicated with a perforation of a production interval, oil in the production interval enters a single-flow channel through the single-flow eye pipes, the single-flow channel sequentially penetrates through the single-flow eye pipe at the front end and the packer to be communicated with the oil pipe, a mixed liquid of the oil and the tracers is input into the oil pipe, the content of the tracers in a ground test production liquid is detected and analyzed on the ground to obtain production profile data of each production interval, the oil is directly output through the single-flow pipeline, interlayer interference is effectively avoided, a testing result is not influenced by the interlayer interference, the testing precision is improved, and a basis is provided for finding water plugging of a horizontal well and improving the recovery ratio.
Drawings
FIG. 1 is a schematic diagram of a test string according to the present invention;
FIG. 2 is a radial planer view of a single flow eye tube of the present invention;
fig. 3 is an axial planing view of a single flow eye tube of the present invention.
In the figure: 1. plugging with a thread; 2. an oil pipe nipple; 3. a first single flow eye tube; 4. a first packer; 5. a second single flow eye tube; 6. a second packer; 7. a third single flow eye tube; 8. a third packer; 9. a fourth single flow eye tube; 10. a fourth packer; 11. a fifth single flow eye tube; 12. a fifth packer; 13. an oil well pump; 14. an oil pipe; 15. a sucker rod; 16. a first tracer; 17. a first single flow channel; 18. a second tracer; 19. a second single flow channel; 20. a third tracer; 21. a third single flow channel; 22. a fourth tracer; 23. a fourth single flow channel; 24. a fifth tracer; 25. a fifth single flow channel.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.
Referring to fig. 1-3, a multi-section fractured horizontal well fluid production profile testing string comprises a string body and a plurality of single flow eye pipes arranged inside the string body, wherein a packer is arranged between every two adjacent single flow eye pipes.
An oil liquid containing cavity is arranged in the single flow eye pipes, a tracer is arranged in the oil liquid containing cavity, and the types of the tracers in the single flow eye pipes are different;
the oil liquid containing cavity is provided with an inlet and an outlet, the inlet is communicated with the oil layer perforation, the outlet is connected with the uniflow channel, and the uniflow channel sequentially penetrates through the uniflow eye pipe at the front end of the uniflow channel and the packer to be communicated with the oil pipe.
Specifically, single current eye pipe includes that outer tube and coaxial setting pass through the end plate welding at its inside inner tube, the both ends of inner tube and outer tube, makes the space that forms between inner tube, outer tube and two end plates hold the chamber for fluid.
The single-flow-hole pipe is 30cm long, 89mm in diameter of the outer pipe, 73mm in diameter of the inner pipe, 6mm in wall thickness of the outer pipe and 11mm in wall thickness of the inner pipe.
The end part is an annular plate, the inner diameter and the outer diameter of the annular plate are respectively the same as the diameters of the inner pipe and the outer pipe, and a filler is arranged in the inner pipe and used for fixing a single-flow channel penetrating through the inner pipe.
The filler is preferably plastic.
The inlet of the oil liquid containing cavity is a plurality of liquid inlets arranged on the outer pipe wall, preferably 10 liquid inlets, the aperture is 10mm, and the oil liquid containing cavity is used for liquid supply at the perforation section.
The outlet of the oil liquid containing cavity is a liquid outlet hole formed in the inner pipe wall, a filler is provided with a flow guide hole communicated with the liquid outlet hole, and the outlet of the flow guide hole is connected with the single-flow channel through a screw thread.
The single-flow channel is a hose, the diameter of the flow guide hole is 16mm, and the temperature resistance of the connecting hose is more than or equal to 80 ℃.
The outlet end of the pipe column is connected with the lower end of an oil pipe 14 through a packer, an oil well pump 13 is arranged in the oil pipe, and the oil well pump is connected with an oil pumping rod 15.
The tracer is two solid tracers, namely a water-soluble tracer and an oil-soluble tracer, and can test oil yield and water yield.
The end of the single-flow eye tube at the deepest part of the tubular column is connected with an oil pipe nipple 3 through a screw thread, a screw plug is arranged at the end part of the oil pipe nipple 3, two ends of the packer are respectively connected with a limiting pipeline, the end part of the limiting pipeline is connected with an adjacent single-flow eye tube through a screw thread, the position of the single-flow eye tube is controlled, the single-flow eye tube is communicated with a corresponding perforation end, the single-flow eye tube at the end part of the tubular column is connected with the packer through the limiting pipeline, and the packer is connected with the oil pipe. One side of the single flow channel connected with the single flow eye pipe passes through the limiting pipeline at the front end of the single flow channel, the packer and the single flow eye pipe to be connected to the oil pipe.
The following describes the measuring method of the multi-section fractured horizontal well fluid production section testing pipe column provided by the invention in detail.
Different types of tracers are injected into the oil containing cavities of the single flow eye pipes, and each type of tracer has uniqueness corresponding to one production interval.
The single flow channel of each single flow eye pipe sequentially passes through the packer and the single flow eye pipe at the front end of the single flow eye pipe, and the outlet ends of all the single flow channels are communicated to the upper part of the foremost packer and are communicated with the oil pipe, so that interlayer interference can be effectively avoided.
After the tracer and the produced fluid of each production interval are dissolved mutually, the mixture is input into an oil well on the upper part of the foremost packer through a corresponding single flow channel, a shaft is swabbed for production, the tracer and the produced fluid are mixed and produced to the ground, and the produced fluid profile data of each production interval is obtained through ground detection and analysis.
The test method adopts a segmented test, the tracer content of each production interval is not interfered, and the production fluid contribution of the production interval is clearly judged according to the tracer content.
Example 1
A multi-section fractured horizontal well fluid production section testing pipe column comprises five single-flow eye pipes, five packers and five single-flow channels.
The five single-flow eye tubes are respectively a first single-flow eye tube 3, a second single-flow eye tube 5, a third single-flow eye tube 7, a fourth single-flow eye tube 9 and a fifth single-flow eye tube 11.
The five packers are a first packer 4, a second packer 6, a third packer 8, a fourth packer 10 and a fifth packer 12, respectively.
The five single flow channels are the first single flow channel 17, the second single flow channel 19, the third single flow channel 21, the fourth single flow channel 23 and the fifth single flow channel 25, respectively.
A first tracer 16 is disposed in the first single flow eye tube 3, a second tracer 18 is disposed in the second single flow eye tube 5, a third tracer 20 is disposed in the third single flow eye tube 7, a fourth tracer 22 is disposed in the fourth single flow eye tube 9, and a fifth tracer 24 is disposed in the fifth single flow eye tube 11.
First single current eye pipe sets up in the deepest of filling, and the tip of first single current eye pipe sets up oil pipe short circuit and stifled silk, and the front end of first single current eye pipe is connected with first packer 4 through spacing pipeline, and the other end of first packer 4 sets gradually second single current eye pipe 5, second packer 6, third single current eye pipe 7, third packer 8, fourth single current eye pipe 9, fourth packer 10, fifth single current eye pipe 11 and fifth packer 12, and fifth packer 12 is connected with upper segment oil pipe.
The single flow connected with each packer sequentially passes through all the dividers, the single flow eye tubes and the limiting pipelines in the front and extends into the upper section oil tube.
For example, the outlet end of the first single flow channel 17 connected to the first single flow eye tube 4 passes through the first packer 4, the second single flow eye tube 5, the second packer 6, the third single flow eye tube 7, the third packer 8, the fourth single flow eye tube 9, the fourth packer 10, the fifth single flow eye tube 11 and the fifth packer 12 in sequence, and extends into the upper tubing section through the fifth packer 12.
According to the multi-section fracturing horizontal well liquid production profile testing tubular column provided by the invention, the water yield and the oil yield corresponding to each production section of an underground oil layer can be obtained, so that the production dynamic of each production section can be determined, the accurate testing of the multi-section fracturing horizontal well liquid production profile is realized, and an effective basis is provided for implementing the sectional oil extraction and the water and oil control and stabilization in the later stage of the horizontal well.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (6)
1. The multi-section fractured horizontal well production profile testing pipe column is characterized by comprising a pipe column connected with an oil pipe, wherein an oil well pump is arranged in the oil pipe, the oil well pump is connected with a sucker rod, and a plurality of single flow eye pipes are arranged in the pipe column;
an oil liquid containing cavity is arranged in the single flow eye pipes, a tracer is arranged in the oil liquid containing cavity, and the types of the tracers in the single flow eye pipes are different;
the oil liquid containing cavity is provided with an inlet and an outlet, the inlet of the oil liquid containing cavity is communicated with the oil layer perforation corresponding to the production interval, the outlet of the oil liquid containing cavity is connected with the inlet of the single flow channel, and the outlet of the single flow channel sequentially penetrates through the single flow eye tube and the packer at the front end of the single flow channel to be communicated with the oil tube;
the single current eye pipe includes that outer tube and coaxial setting are at its inside inner tube, and the end plate welding is passed through at the both ends of inner tube and outer tube, makes the space that forms between inner tube, outer tube and two end plates hold the chamber for fluid, the inside of inner tube is provided with the filler, and the filler is used for fixing the single current passageway of passing its inside.
2. The multi-section fractured horizontal well production profile testing string according to claim 1, wherein the end plate is of an annular structure, and the inner diameter and the outer diameter of the end plate are respectively the same as the diameters of the inner pipe and the outer pipe.
3. The production profile testing string for the multi-section fractured horizontal well as defined in claim 2, wherein the inlet of the oil containing cavity is a plurality of liquid inlets formed in the outer pipe wall; the outlet of the oil liquid containing cavity is a liquid outlet hole arranged on the inner pipe wall, and the liquid outlet hole is connected with the single-flow channel.
4. The multi-staged fractured horizontal well fluid production profile testing string of claim 1, wherein the end of the string is connected to the lower end of the tubing via a packer.
5. The multi-section fractured horizontal well fluid production profile testing string according to claim 1, wherein a plug is arranged on an end plate of the deepest monocular flow tube of the string.
6. The multi-section fractured horizontal well production profile testing string according to claim 1, wherein the tracers are two solid tracers which are respectively a water-soluble tracer and an oil-soluble tracer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010450232.2A CN111663929B (en) | 2020-05-25 | 2020-05-25 | Multi-section fractured horizontal well production profile testing pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010450232.2A CN111663929B (en) | 2020-05-25 | 2020-05-25 | Multi-section fractured horizontal well production profile testing pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111663929A CN111663929A (en) | 2020-09-15 |
| CN111663929B true CN111663929B (en) | 2023-04-07 |
Family
ID=72384526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010450232.2A Active CN111663929B (en) | 2020-05-25 | 2020-05-25 | Multi-section fractured horizontal well production profile testing pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111663929B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302579B (en) * | 2020-11-04 | 2021-08-10 | 中国石油大学(北京) | Horizontal well subsection sand prevention water plugging system and method |
| CN112360387A (en) * | 2020-12-08 | 2021-02-12 | 中国石油天然气股份有限公司 | Balanced production water control pipe column and method for casing completion horizontal well |
| CN113107473B (en) * | 2021-04-01 | 2024-02-13 | 陕西靖瑞能源科技股份有限公司 | Intelligent water shutoff finding method and system for horizontal well |
| CN113047826B (en) * | 2021-04-13 | 2022-04-12 | 西南石油大学 | Intelligent releasable tracer production profile test experimental device and method |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201372779Y (en) * | 2009-03-04 | 2009-12-30 | 中国石油天然气股份有限公司 | Oil casing communicating vessel |
| CN102505939B (en) * | 2011-10-21 | 2015-04-22 | 中国科学院武汉岩土力学研究所 | Stratified fluid monitoring and sampling device based on pressure pulse |
| CN203008894U (en) * | 2013-01-17 | 2013-06-19 | 魏来君 | Cable-free layered test instrument for injection-production profile of oil-water well |
| CN104929629B (en) * | 2015-06-17 | 2017-09-29 | 中国科学院武汉岩土力学研究所 | A kind of tube-in-tube underground fluid Stratified Sampling device |
| CN205025459U (en) * | 2015-08-31 | 2016-02-10 | 中国石油天然气股份有限公司 | Staged fracturing horizontal well production profile testing string |
| CN105937393B (en) * | 2016-06-27 | 2022-11-04 | 中国石油天然气股份有限公司 | Horizontal well dragging type liquid production profile testing pipe column and testing method thereof |
| CN107989588B (en) * | 2017-11-10 | 2020-04-17 | 东方宝麟科技发展(北京)有限公司 | Method and system for testing oil-gas-water profile of each section of horizontal well by using environment-friendly tracer |
| CN110230489B (en) * | 2018-03-05 | 2023-07-14 | 中国石油化工股份有限公司 | Multi-section fracturing horizontal well liquid production profile testing equipment and method |
| CN108952656A (en) * | 2018-06-12 | 2018-12-07 | 中国石油天然气股份有限公司 | Multistage pressure break horizontal well produced fluid cross section method and tubing string |
| CN108505990A (en) * | 2018-07-05 | 2018-09-07 | 西南石油大学 | A kind of down-hole oil tube tracer transmission groundwater prospecting method and device |
| CN109162706A (en) * | 2018-11-06 | 2019-01-08 | 西安石油大学 | A kind of well-case perforating horizontal well liquid production section test device, production test integral tubular column and test method |
| CN110031262B (en) * | 2019-03-28 | 2023-12-01 | 中国地质调查局水文地质环境地质调查中心 | Low-flow low-disturbance layered sampling device and sampling method thereof |
| CN110617054B (en) * | 2019-09-17 | 2022-08-30 | 中国石油天然气股份有限公司 | Oil field horizontal well sectional testing pipe column and method |
| CN110566189A (en) * | 2019-09-27 | 2019-12-13 | 西安石油大学 | Slow-release tracer agent real-time water exploration device, horizontal well real-time water exploration and water shutoff integrated tubular column and implementation method |
-
2020
- 2020-05-25 CN CN202010450232.2A patent/CN111663929B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111663929A (en) | 2020-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111663929B (en) | Multi-section fractured horizontal well production profile testing pipe column | |
| CN107725034B (en) | Pressure monitoring method for judging water incoming direction of multi-stage fractured horizontal well | |
| CN104500057A (en) | Testing method of liquid producing profile of horizontal well | |
| CN102121377B (en) | Pressure-while-drilling measuring device and measurement method thereof | |
| CN109444339B (en) | A kind of shale gas horizontal well refracturing fiber temporarily blocks up experimental test procedures | |
| CN206917640U (en) | The steady oil system of offshore oilfield horizontal well automatic control water | |
| CN102445710B (en) | Detecting drilling device for monitoring system of cover-rock water flowing fractured zone | |
| CN110243746A (en) | A kind of device and method of layer-through drilling quick in situ test coal seam permeability | |
| CN105569635B (en) | A kind of horizontal well produced fluid cross section technical matters tubing string and test method | |
| CN105443093B (en) | Well head combined measuring device and its method for injection well | |
| CN105587274A (en) | Concentric tube straddle downward return perforating, testing, liquid draining and modifying system and operation method | |
| CN107956459A (en) | A kind of foam injection device and its application method and installation method | |
| CN102953716A (en) | Parallel double-tube separate layer water injection string | |
| CN107339096A (en) | A kind of quick groundwater prospecting method of horizontal well | |
| CN111963153A (en) | Test system and method for water outlet section of horizontal well of composite continuous pipe cable | |
| CN110671086B (en) | Composite acid fracturing construction pipe column and application method | |
| CN110017133A (en) | A kind of test of horizontal well production profile and shutoff method and device | |
| CN205778847U (en) | It is applied to the pump drainage sampling device of connector for logging while drilling | |
| CN106050226A (en) | Sample sucking and discharging device applied to well logging instrument during drilling | |
| CN214616480U (en) | Oil field water injection well water injection layering multitube divides water injection system | |
| RU2473791C1 (en) | Plant for simultaneous separate well operation, and well chamber for it | |
| CN211230441U (en) | Horizontal well output profile testing and water plugging device | |
| CN113464123A (en) | Rapid water finding method and tubular column for coiled tubing of high-pressure water outlet horizontal well | |
| CN203296759U (en) | Pipe column device for perforating and testing of HTHP ultra-deep well | |
| CN101397894B (en) | Well drilling gas injection joint and use method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |