CN208010322U - A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device - Google Patents
A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device Download PDFInfo
- Publication number
- CN208010322U CN208010322U CN201721665876.3U CN201721665876U CN208010322U CN 208010322 U CN208010322 U CN 208010322U CN 201721665876 U CN201721665876 U CN 201721665876U CN 208010322 U CN208010322 U CN 208010322U
- Authority
- CN
- China
- Prior art keywords
- fried
- quick
- combustion
- explosion
- feed liquor
- 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
Abstract
The utility model is related to a kind of perforating oil gas well feed liquor explosion arrestment explosion propagation devices, including the first noumenon and feed liquor explosion arrestment propagation of explosion component；Wherein, the feed liquor explosion arrestment propagation of explosion component is mainly made of outer housing, quick-fried turn of combustion energy converter and the quick-fried energy converter of combustion turn etc., and is threadingly attached in the first noumenon.The utility model is in the detonation operation of oil/gas well oil tube transmission perforation gun breech, effect is can not only reliable propagation of explosion, moreover it is possible to perforating gun feed liquor effectively be avoided to lead to the generation of fried rifle accident.
Description
Technical field
The present invention relates to perforating oil gas well fields, more particularly to a kind of oil/gas well oil tube transmission perforation gun breech that is suitable for detonate
Feed liquor explosion arrestment boosting explosive material.
Background technology
With the development of perforating oil gas well technology, perforating oil gas well construction level is higher and higher, in order to save construction cost,
Often require that primary go into the well will penetrate open multiple target zones, this perforation pipe string for allowing for going into the well become it is very long (be usually hundreds of meters,
For up to 1200 meters at present), so long perforation pipe string is at least associated with up to a hundred perforating guns, at least one is close for every perforating gun
Cover, therefore pipe string a sealing parts at least up to a hundred every time.Since perforating gun sealing part is more, oil tube transmission perforation labor itself
Fatigue resistance is big, and construction frequency is high, therefore it is difficult to ensure that every time the perforation pipe string of lower well construction all seal it is intact.Commonplace applies
Work quality accident is shown：Most situations be since the sealing of perforating gun string link unsuccessfully causes well liquid to enter perforating gun,
Cause perforation to fry rifle (improper perforation) after detonation, causes heavy economic losses.
Invention content
Present invention solves the technical problem that being：For current oil/gas well oil tube transmission perforation because sealing part unsuccessfully causes to penetrate
The great pernicious construction accident of rifle is fried in hole, provides a kind of oil/gas well oil tube transmission perforation feed liquor explosion arrestment explosion propagation device.
The technical scheme is that：A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device, including the first noumenon 1 and into
Liquid explosion arrestment propagation of explosion component 2；1 inside of the first noumenon is coaxially provided with multi-step hole, both ends open, one end and gun breech priming device
Connection, the other end are connect with gun joint；Feed liquor explosion arrestment propagation of explosion component 2 is placed in one end close to gun joint in the first noumenon 1,
And it is sealed by sealing structure；The feed liquor explosion arrestment propagation of explosion component 2 includes that outer housing 4, quick-fried turn of combustion energy converter 5 and combustion turn quick-fried
Energy converter 6,4 outer wall of outer housing are ladder-like column, and outer wall is connected with 1 path cavity wall of the first noumenon, passes through sealing structure
It is sealed；Inside is provided with multi-step hole；Quick-fried turn of combustion energy converter 5 and combustion turn quick-fried energy converter 6 and are placed in outer housing 4；In outer housing 4
Side wall thinnest part is provided with through-hole 20, and ensures that lead to the hole site turns in combustion on 6 corresponding outer housing of quick-fried energy converter, 4 side wall；Gun breech rises
After quick-fried, explosion energy is switched into burning capacity by quick-fried turn of combustion energy converter 5, combustion is reached and turns quick-fried energy converter 6, combustion turns quick-fried energy converter 6
Burning capacity is switched into explosion energy, reaches perforating gun, is ignited；When perforating gun is poorly sealed, the well liquid in oil/gas well
Perforating gun can be entered, the well liquid come is flowed into and hindered since gravity will flow into feed liquor of the present invention via the propagation of explosion hole in gun joint
In quick-fried explosion propagation device, well liquid is flowed by through-hole 20 and rectangular aperture slot 21 in feed liquor explosion arrestment propagation of explosion component 2 again successively, by feed liquor
Ignition charge 11 in explosion arrestment propagation of explosion component 2 soaks, and is fired at quick-fried turn and form fluid cushion between energy converter 5 and combustion turn quick-fried energy converter 6, makes
The ignition charge 11 of quick-fried turn of combustion energy converter 5 turns the normal biography fire failure between 6 ignition charge 11 of quick-fried energy converter to combustion, realizes feed liquor resistance
It is quick-fried.
The present invention further technical solution be：In the quick-fried turn of combustion energy converter 5, arrogant step nose end rises, and is equipped with successively
Explosive A9, priming 10 and ignition charge 11, wherein explosive A9 are mutually not in contact with each other with priming 10.
The present invention further technical solution be：It includes that combustion turn quick-fried inverting element 13 and combustion turn that the combustion, which turns quick-fried energy converter 6,
Quick-fried transducer holder 14；The combustion turns quick-fried transducer holder 14 as multi-stage column, and square is provided with along axisymmetrical at path port
Shape open slot 21, combustion turn 13 spontaneous combustion of quick-fried inverting element turn, 14 miner diameter end of quick-fried transducer holder, which rises to be encased in fire, turns quick-fried transducer holder 14,
Combustion turns 13 open end of quick-fried inverting element and turns 14 path extreme direction of quick-fried transducer holder towards combustion, and fires and turn 13 open end of quick-fried inverting element
Face must not be higher than the slot bottom that combustion turns 14 rectangular aperture slot 21 of quick-fried transducer holder.
The present invention further technical solution be：It includes the first shell 17 and strengthening cap that the combustion, which turns quick-fried inverting element 13,
15, one end open is closed in the first shell 17 generally column, one end；First shell, 17 self-styled closed end rises, and is equipped with explosive successively
A16 and strengthening cap 15, the open end of strengthening cap 15 is towards inside the first shell 17.
The present invention further technical solution be：The strengthening cap 15 is equipped with successively from 19 open end of the second shell
Explosive A9, priming 10 and ignition charge 11 are used in combination cover plate 18 to seal.
The present invention further technical solution be：The sealing structure is sealing ring.
Invention effect
The technical effects of the invention are that：Have the beneficial effect that the following aspects：
Since the present invention is using the biography fire method between ignition charge, it can reliably realize that oil/gas well oil tube transmission perforation exists
Perforating gun feed liquor explosion arrestment function in the case of gun breech detonation avoids perforating gun string sealing from unsuccessfully leading to the hair of the serious accident of fried rifle
It is raw.But in the case of perforating gun string good seal, the present invention again can reliable propagation of explosion.
It is right when the present invention is between two sections of perforating gun strings since the present invention uses physical seal isolation design
Two sections of perforating gun strings carry out artificial physical seal isolation, and when sealing failure occurring for wherein one section, the present invention will prevent liquid
Into in another section of perforating gun string, to avoid the loss of bigger.
Using flexible of the present invention not only may be mounted at perforating gun string tail end, but also may be mounted at arbitrary position in perforating gun string
It sets.It can also be matched with other exploding perforating hole boosting explosive materials.
The present invention may be reused (in addition to feed liquor explosion arrestment propagation of explosion component 2), can reduce construction cost.
Description of the drawings
Fig. 1：It is of the invention a kind of for perforating oil gas well feed liquor explosion arrestment explosion propagation device structural schematic diagram；
Fig. 2：The first noumenon structural schematic diagram in Fig. 1；
Fig. 3：Feed liquor explosion arrestment propagation of explosion component structure diagram in Fig. 1；
Fig. 4：Quick-fried turn of combustion transducer architecture schematic diagram in Fig. 3；
Fig. 5：Combustion turns quick-fried transducer architecture schematic diagram in Fig. 3；
Fig. 6：Outer shell construction schematic diagram in Fig. 3；
Fig. 7：Combustion turns quick-fried inverting element schematic diagram in Fig. 5
Fig. 8：Combustion turns quick-fried transducer holder structural schematic diagram in Fig. 5；
Fig. 9：Strengthening cap structural schematic diagram in Fig. 7；
Figure 10：One operating diagram of the embodiment of the present invention；
Figure 11：Two operating diagram of the embodiment of the present invention.
Reference sign：1-the first noumenon；2-feed liquor explosion arrestments send out propagation of explosion component；3-the first sealing ring；4-shells
Body；5-quick-fried turns of combustion energy converters；6-combustions turn quick-fried energy converter；7-the second sealing ring；8-the second ontology；9-explosive A；10-rise
Quick-fried medicine；11-ignition charges；12-third sealing rings；13-combustions turn quick-fried inverting element；14-combustions turn quick-fried transducing seat；15-reinforce
Cap；17-the first shell；18-cover plates；19-the second shell；20-through-holes；21-rectangular aperture slots；22-steps；23-rifles
Tail priming device；24-feed liquor explosion arrestment explosion propagation devices；25-gun joints；26-propagation of explosion holes；27-perforating gun strings；
Specific implementation mode
Referring to Fig. 1-Figure 11, one kind being used for perforating oil gas well feed liquor explosion arrestment explosion propagation device, it is characterised in that including device
Ontology 1, feed liquor explosion arrestment propagation of explosion component 2 and sealing ring 3；The feed liquor explosion arrestment propagation of explosion component 2 includes connector 4, quick-fried turn of combustion transducing
Device 5, combustion turn quick-fried energy converter 6 and sealing ring 7；Described quick-fried turn fires energy converter 5, and the big-diameter blind hole on ontology 8 loads explosive 9, small blind
Priming 10 and ignition charge 11 are loaded in hole successively, and sealing ring 12 is housed on ontology 8；The combustion turns quick-fried energy converter 6, by firing
Turn quick-fried inverting element 13 and combustion turns quick-fried transducer holder 14 and forms；The combustion turns quick-fried inverting element 13, by strengthening cap 15, explosive 16
It is formed with shell 17；The strengthening cap 15 is made of cover plate 18, ignition charge 11, priming 10, explosive 9 and shell 19.It utilizes
Sealing ring 12 in feed liquor explosion arrestment propagation of explosion component 2 on sealing ring 7 and quick-fried turn of combustion energy converter 5, the physical seal at realization device both ends
Isolation.
Two symmetrical through-holes 20 are opened in the connector 4, side；The combustion turns quick-fried transducer holder 14, small end setting two
A rectangular aperture slot 21.
Described device ontology 1, connector 4, combustion turn quick-fried transducer holder 14, pass through sealing ring 7, sealing ring 12,20 and of through-hole
Open slot 21 forms fluid passage.
The combustion turns quick-fried energy converter 6, wherein combustion, which turns 13 end face of quick-fried inverting element (carrying strengthening cap 15), must not be higher than combustion
Turn the slot bottom of 14 rectangular aperture slot 21 of quick-fried transducer holder.
It is explained below for each attached drawing：
As shown in Figure 1, the preferred embodiment of the present invention includes device body 1, feed liquor explosion arrestment propagation of explosion component 2 and sealing ring
3。
As shown in Figure 2, the right side of device body 1 is provided with step 22, is conducive to liquid and enters the present invention；
As shown in Figure 3, the feed liquor explosion arrestment propagation of explosion component 2 includes connector 4, quick-fried turn of combustion energy converter 5, the quick-fried transducing of combustion turn
Device 6 and sealing ring 7.
As shown in Figure 4, energy converter 5 is fired for described quick-fried turn, the big-diameter blind hole on ontology 8 loads explosive 9, and small blind hole fills successively
Priming 10 and ignition charge 11 are filled out, and sealing ring 12 is housed on the body；
As shown in Figure 5, the combustion turns quick-fried energy converter 6, turns quick-fried inverting element 13 by combustion and combustion turns quick-fried transducer holder 14
Composition；
As shown in Figure 6, the connector 4, side open two symmetrical through-holes 21, circulation passage are provided for liquid；
As shown in Figure 7, the combustion turns quick-fried inverting element 13, is made of strengthening cap 15, explosive 16 and shell 17；
As shown in Figure 8, the combustion turns quick-fried transducer holder 14, and small end is arranged two rectangular aperture slots 22, is carried for liquid
For circulation passage；
As shown in Figure 9, the strengthening cap 15, by 19 groups of cover plate 18, ignition charge 11, priming 10, explosive 9 and shell
At.
As shown in Figure 10, the present invention is mounted on the embodiment between gun breech priming device and perforating gun string.
As shown in figure 11, the present invention is mounted on the embodiment between two perforating gun strings.
The advantages of this preferred embodiment, is it using the biography fire method between ignition charge, therefore can reliably realize oil/gas well
The perforating gun feed liquor explosion arrestment function that oil tube transmission perforation detonates in gun breech avoids perforating gun string sealing from unsuccessfully leading to fried rifle
Serious accident generation.Simultaneously in the case of perforating gun string good seal, the present invention again can reliable propagation of explosion.
The advantages of this preferred embodiment, is that the present invention uses physical seal isolation design, therefore when the present invention is used for two sections
When between perforating gun string, artificial physical seal is carried out to two sections of perforating gun strings and is isolated, when sealing failure occurring for wherein one section,
The present invention will prevent liquid from entering in another section of perforating gun string, to avoid the loss of bigger.
The advantages of this preferred embodiment, is using flexible of the present invention, not only may be mounted at perforating gun string tail end, but also can be with
Any position in perforating gun string.It can also be matched with other exploding perforating hole boosting explosive materials.
The advantages of this preferred embodiment, is that the present invention may be reused (in addition to feed liquor explosion arrestment propagation of explosion component), and saving is applied
Work cost.
The assembling process of this preferred embodiment is：
15 production method of strengthening cap：Cover plate 18 is encased in the second shell 19, then pours into ignition charge 11, detonation successively
Above-mentioned medicament is compacted by medicine 10 and explosive A9 with the pressure of 30MPa；
Combustion turns 13 production method of quick-fried inverting element：Explosive B16 is fitted into the first shell 17, is used in combination the pressure of 60MPa will
Strengthening cap 15, is then pressed into the pressure of 30MPa in the first shell 17 by above-mentioned medicament compacting；
Combustion turns 6 production method of quick-fried energy converter：Combustion is turned into 13 outside of quick-fried inverting element and coats a little heatproof glue, then it is inserted into
To in combustion turn 14 hole of quick-fried transducer holder, (combustion turns small end side of the quick-fried inverting element 13 with strengthening cap end direction combustion turn quick-fried transducer holder 14
To)；
Quick-fried turn of combustion 5 production method of energy converter：Explosive A9 is first pressed into the big-diameter blind hole of the second ontology 8 with the pressure of 30MPa
In, priming 10 and ignition charge 11 are then pressed into the pressure of 30MPa successively to the small blind hole of the second ontology 8, and load onto third
Sealing ring 12；
The production method of feed liquor explosion arrestment propagation of explosion component 2：First quick-fried turn of combustion energy converter 5 is screwed into outer housing 4, then turns combustion
Quick-fried energy converter 6 is screwed into the other way around in outer housing 4, finally loads onto the second sealing ring 7；
The general assembly method of completing the square of the present invention：Feed liquor explosion arrestment propagation of explosion component 2 is screwed into device body, it is close then to load onto first
Seal 3.
The course of work of this preferred embodiment one：
As shown in Figure 10, perforating gun string 27 (generally hundreds of meters of length) is first assembled, then by gun joint 25, this hair
Bright 24 and gun breech priming device 23 concatenated successively with 27 phase of perforating gun string, then by the other end phase of oil pipe 28 and perforating gun string 27
Connection.Finally, the entire rifle string connected is slowly entered in oil/gas well, reaches and specify perforation interval of interest, is detonated by gun breech
Device ignites perforating gun string and carries out perforation.
Since oil/gas well is substantially full of well liquid, so long perforating gun string (contains many sealing rings
Section), it sometimes appear that sealing failure.If perforating gun string somewhere sealing part goes wrong, well liquid can enter this section of perforation
Rifle string 27, the well liquid come in flow into feed liquor explosion arrestment of the present invention via the propagation of explosion hole 26 in gun joint 25 first due to gravity
In explosion propagation device 24, the ignition charge 11 in feed liquor explosion arrestment propagation of explosion component 2 is soaked, and fires energy converter 5 at quick-fried turn and combustion turns quick-fried to change
Fluid cushion can be formed between device 6, the present invention is still subjected to the normal detonation energy that gun breech priming device below issues at this time,
But since ignition charge 11 soaks the effect with fluid cushion, the ignition charge 11 of quick-fried turn of combustion energy converter 5 is made to turn 6 ignition charge of quick-fried energy converter to combustion
Normal biography fire failure between 11, realizes the feed liquor explosion arrestment function of the present invention, so as to avoid perforating gun string because feed liquor causes to fry
The risk of rifle.
If perforating gun string good seal, after the present invention receives the detonation energy that gun breech priming device is sent out, fired by quick-fried turn
This detonation energy is converted to flame punching energy (ignition charge 11 of i.e. quick-fried turn combustion energy converter 5 burns) by energy converter 5, and exports work
With on the ignition charge 11 that combustion turns quick-fried energy converter 6.Combustion turns quick-fried energy converter 6 and burning occurs and is detonation energy by burning conversion, after
And the perforating gun string 27 above it is ignited, complete the propagation of explosion function of the present invention.
The course of work of this preferred embodiment two：
As shown in Figure 11, in addition to one present invention 24 of normal mounting at gun breech priming device 23, also in former perforating gun
One present invention 24 is installed among string 27.In this way, former long perforating rifle string 27 is just divided into two sections (i.e. A sections 29 and B sections 30), due to
The present invention has physical seal isolation characteristic, therefore divided two sections of perforating gun strings have been carried out physical seal isolation, when it
In one section when sealing failure occurs, the present invention will prevent liquid into another section of perforating gun string, to avoid the loss of bigger.
Claims (6)
1. a kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device, which is characterized in that passed including the first noumenon (1) and feed liquor explosion arrestment
Quick-fried component (2)；The first noumenon (1) is internal to be coaxially provided with multi-step hole, and both ends open, one end connects with gun breech priming device
It connects, the other end is connect with gun joint；Feed liquor explosion arrestment propagation of explosion component (2) is placed in the first noumenon (1) close to the one of gun joint
End, and be sealed by sealing structure；The feed liquor explosion arrestment propagation of explosion component (2) includes outer housing (4), quick-fried turn of combustion energy converter
(5) and combustion turns quick-fried energy converter (6), and outer housing (4) outer wall is ladder-like column, outer wall and the first noumenon (1) path cavity wall
It is connected, is sealed by sealing structure；Inside is provided with multi-step hole；Quick-fried turn of combustion energy converter (5) and combustion turn quick-fried energy converter (6) and set
In outer housing (4)；It is provided with through-hole (20) in outer housing (4) side wall thinnest part, and ensures that lead to the hole site turns quick-fried energy converter in combustion
(6) on corresponding outer housing (4) side wall.
2. a kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device as described in claim 1, which is characterized in that the quick-fried turn of combustion
In energy converter (5), arrogant step nose end rises, and is equipped with explosive A (9), priming (10) and ignition charge (11), wherein explosive A successively
(9) it is mutually not in contact with each other with priming (10).
3. a kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device as described in claim 1, which is characterized in that the combustion turns quick-fried
Energy converter (6) includes that combustion turns quick-fried inverting element (13) and the quick-fried transducer holder (14) of combustion turn；The combustion turns quick-fried transducer holder (14)
Multi-stage column, is provided with rectangular aperture slot (21) at path port along axisymmetrical, and combustion turns quick-fried inverting element (13) spontaneous combustion
Turn quick-fried transducer holder (14) miner diameter end and be encased in the quick-fried transducer holder (14) of combustion turn, combustion turns quick-fried inverting element (13) open end direction
Combustion turns quick-fried transducer holder (14) path extreme direction, and quick-fried inverting element (13) open end of combustion turn must not be higher than combustion and turn quick-fried energy converter
The slot bottom of seat (14) rectangular aperture slot (21).
4. a kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device as claimed in claim 3, which is characterized in that the combustion turns quick-fried
Inverting element (13) includes the first shell (17) and strengthening cap (15), the first shell (17) generally column, one end closing one
End opening；First shell (17) self-styled closed end rises, and is equipped with explosive A (9) and strengthening cap (15), the open end of strengthening cap (15) successively
It is internal towards the first shell (17).
5. a kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device as claimed in claim 4, which is characterized in that the strengthening cap
(15) from the second shell (19) open end, it is equipped with explosive A (9), priming (10) and ignition charge (11) successively, cover plate is used in combination
(18) it seals.
6. a kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device according to claim 1, it is further characterized in that：The sealing
Structure is sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721665876.3U CN208010322U (en) | 2017-12-05 | 2017-12-05 | A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721665876.3U CN208010322U (en) | 2017-12-05 | 2017-12-05 | A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208010322U true CN208010322U (en) | 2018-10-26 |
Family
ID=63880581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721665876.3U Active CN208010322U (en) | 2017-12-05 | 2017-12-05 | A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208010322U (en) |
-
2017
- 2017-12-05 CN CN201721665876.3U patent/CN208010322U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101691837B (en) | Detonation energization explosion-propagating device for perforating gun string | |
| CN102022101B (en) | Multi-stage perforating pressurizing device | |
| CN108374651A (en) | A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device | |
| CN106382105B (en) | A kind of oil/gas well interlayer propagation of explosion high temperature pressurised device | |
| CN201428439Y (en) | Energy-increased explosion enlargement type perforating gun single connector | |
| CN201531256U (en) | Dynamic seal press device for improving fracturing effect of composite perforation | |
| CN208010322U (en) | A kind of perforating oil gas well feed liquor explosion arrestment explosion propagation device | |
| CN202417452U (en) | Bidirectional energizing explosion propagating device | |
| CN112985200B (en) | Detonator with same-end axial needling flame redundancy input | |
| US4640370A (en) | Perforating gun for initiation of shooting from bottom to top | |
| CN220018337U (en) | Detonation device | |
| CN201620849U (en) | Detonation wave graded exploder | |
| CN101435324A (en) | Sectional type oil pipe transmission composite perforation process | |
| CN201531258U (en) | Detonating and energizing explosion-propagating device for perforating gun strings | |
| CN211777353U (en) | Second-level delay detonation propagation device for oil and gas well perforation | |
| CN108999598A (en) | A kind of perforating oil gas well electric igniter | |
| CN212458148U (en) | One-rotation multi-explosion transfer connecting device | |
| CN201093952Y (en) | Combined type smoke gun powder long prolongation exploding apparatus | |
| CN201358766Y (en) | Pressure detonator of full bore perforation of oil-gas well | |
| CN104863551B (en) | A kind of two-way detonating primer of Oil/gas Well superhigh temperature | |
| CN102410005B (en) | Bidirectional energization explosion-propagating device | |
| CN208920969U (en) | High temperature and pressure electric cap | |
| CN205297497U (en) | It explodes device to be used for ultra -temperature, superhigh pressure oil gas well perforation to pass with time delay | |
| CN103015936B (en) | A kind of withered and fallen thing Pressure breaking bullet device | |
| CN208934668U (en) | A kind of perforating oil gas well electric igniter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |