EP3696368B1 - Insert for a journal leg of a rotary drill tool - Google Patents
Insert for a journal leg of a rotary drill tool Download PDFInfo
- Publication number
- EP3696368B1 EP3696368B1 EP19157436.7A EP19157436A EP3696368B1 EP 3696368 B1 EP3696368 B1 EP 3696368B1 EP 19157436 A EP19157436 A EP 19157436A EP 3696368 B1 EP3696368 B1 EP 3696368B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hat
- insert
- foot
- journal leg
- leg
- 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
- 238000005520 cutting process Methods 0.000 claims description 17
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 10
- 230000001012 protector Effects 0.000 description 5
- 238000005552 hardfacing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
-
- 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
Definitions
- Rotary drills have emerged as an effective tool for specific drilling operations such as the creation of blast holes and geothermal wells.
- the drill typically comprises a rotary drill bit having three journal legs that mount respective cone-shaped rolling cutters via bearing assemblies that include rollers and balls.
- journal legs come into contact with the wall. Therefore, this area is subject to excessive wear.
- an insert adapted to be mounted in a journal leg of a rotary drill tool for cutting rock, the insert being adapted to reinforce the neck of the journal leg.
- the insert has a mushroom shape comprising a hat and a foot, the hat having a diameter and the foot having a diameter being smaller than the diameter of the hat. This shape of the insert going beyond the diameter of the hole where the insert is located and above the surface of the neck of the journal leg gives good wear protection.
- the insert has a hat with a rounded top surface.
- Any type of round can be used such as conical, spherical, ballistic or pointed.
- a rounded shape has the advantage of smooth wear protection, that is good in certain types of drilling such as rotary drilling.
- the insert with the hat has a chamfered lower side. This ensures a good fit in the hole.
- the insert having a height of the hat in relation to the length of the foot being 30% to 65%.
- This relation can also be 35%, 40%, 45%, 50%, 55% or 60%.
- a certain thickness of the hat is needed in order to not brake and last for wear protection.
- the relation of the height of the hat versus the diameter of the foot is in the range of 20% to 40%, such that it can also be 25%, 30% or 35%.
- the relation of the height of the hat versus the diameter of the hat is in the range of 10% to 25%, it could also be 15% or 20%.
- journal leg of a rotary drill tool for cutting rock comprising at least one insert.
- the journal leg comprises at least four inserts being arranged at the shirt of the journal leg.
- This area is specifically in need of wear protection, so it is advantageous to arrange inserts in this area.
- the journal leg comprises a plurality of inserts being arranged at the shirt of the journal leg such that the outer circumference of the hat is in line with the outer edge of the shirt.
- the inserts are placed as close to the edge as possible to in the best possible way protect the area specifically in need of wear protection.
- the journal leg comprises a plurality of inserts being arranged at the shirt of the journal leg such that the outer circumference of the hat of each insert is arranged adjacent to or on a short distance to the neighbouring insert. This ensures a reliable wear protection.
- a rotary cutting tool 100 is formed as a cutting bit and comprises a cutting end 101 at an axially forward position and an axially rearward attachment end 102 configured for mounting at one end of a drill string (not shown) forming part of a drill assembly operated via a drilling rig (not shown) configured to provide axial and rotational drive of tool 100.
- Tool 100 comprises three journal legs 105 projecting axially forward from attachment end 102 and being aligned slightly radially outward such that cutting end 101 comprises a generally larger cross section than attachment end 102.
- a generally conical shaped cutter 103 is mounted at an end of each journal leg 105 so as to be capable of rotation relative to leg 105 and independent rotation about a separate axis relative to a general rotation of tool 100 and the drill string (not shown).
- Figure 3 discloses a first embodiment of an insert 10 having a general shape of a mushroom.
- the insert has a foot 13 with a specific length (similar as can be seen in figure 4 ), on top of which foot a hat 16 is connected.
- the outer diameter of the hat is larger than the outer diameter of the foot (similar as can be seen in figure 4 ).
- the lower part of the hat 18 connecting to the foot having a chamfered shape to smoothly fit into the tapered hole 4.
- the outer diameter of the foot 13 has a wave shaped layout with ridges 14 and grooves 15 regularly spread around the perimeter throughout the length of the foot, except for the lower part.
- the height H of the hat 16 is defined as from a point of the horizontal plane that is arranged in the intersection of the chamfered lower part 18 and the outer edge of the hat 12 to the horizontal plane representing the top surface 11.
- the chamfering 18 fits into the tapered hole 4 (seen in figure 2 ).
- the second embodiment shown in figure 4 has an upper outer part of the insert being a rounded top surface 21 of the hat.
- the top surface 21 can have any rounded shape such as conical, spherical or similar.
- the hat contour from the foot and upwards can be described as the chamfered lower part 28 followed by an outer edge of the hat 22, which represents the perimeter of the outer diameter of the hat 26.
- the outer edge of the hat 22 seen from the side is parallel with the longitudinal axis of the foot.
- the contour of the hat then follows with the round top surface 21, so the round shape is intersecting with the outer edge 22.
- the outer edge of the hat 12, 22 corresponding to the circumference of the hat 16, 26 being defined by the outer diameter (corresponding to D1, as seen in figure 4 ).
- This outer edge 12, 22 of the top of the insert could be arranged close to a neighbouring insert on the journal leg.
- the outer edge 12, 22 of one insert could even be arranged adjacent to the following insert, such that there is only a very small distance in between. So, nearly in touching relationship with a neighbouring insert.
- the distance between two inserts following upon each other could also be somewhat larger, i.e. where the edge 3 of the shirttail 2 of the journal leg is more rounded the inserts will be somewhat more distanced due to the curvature of the edge 3.
Description
- The present invention relates to an insert for a rotary drill tool and a rotary drill tool comprising an insert.
- Rotary drills have emerged as an effective tool for specific drilling operations such as the creation of blast holes and geothermal wells. The drill typically comprises a rotary drill bit having three journal legs that mount respective cone-shaped rolling cutters via bearing assemblies that include rollers and balls.
- Typically, the drill bit is attached to one end of a drill string that is driven into the borehole via a rig. The cutting action is achieved by generating axial feed and rotational drive forces that are transmitted to the drill bit via the drill rods coupled end-to-end. Each of the cone-shaped cutters comprise externally mounted hardened cutting buttons positioned at different axial regions for optimised cutting as the drill bit rotates.
- During the drilling operations the journal legs come into contact with the wall. Therefore, this area is subject to excessive wear.
- In order to protect the legs their area closest to the wall is normally covered with some kind of hard facing. Covering the leg with a welded seam is a known solution to protect the shirt tail. An example rotary cone drill bit is described in
US 8,522,899 .US5890550 discloses a rolling cutter having earth boring bits with improved wear resistance. The documentGB 1343040 A - However, the known designs are not sufficiently durable. They also involve manual work to a large extent. When welding is used the layout of the welded pattern varies, which results in an irregular wear protection both in thickness and hardness. Another drawback with a welded hard facing is that the surface adherence not always is satisfactory.
- Accordingly, what is required is a drill tool that addresses the above problems and drawbacks.
- It is an objective of the present invention to provide a rotary drill tool with a journal leg configured for maximum wear protection of the neck of the journal leg. It is a further specific objective to provide a journal leg wear protection that requires a minimum amount of manual work in manufacturing and that the journal leg wear protection is not worn out faster than the cutting buttons that are used for drilling. It is yet a further specific objective to provide a journal leg with an efficient wear protection that also gives the same protection wherever applied and not gives variation in thickness or hardness or any other kind of variation in hardness, layout and design.
- According to a first aspect of the present invention there is provided an insert adapted to be mounted in a journal leg of a rotary drill tool for cutting rock, the insert being adapted to reinforce the neck of the journal leg. The insert has a mushroom shape comprising a hat and a foot, the hat having a diameter and the foot having a diameter being smaller than the diameter of the hat. This shape of the insert going beyond the diameter of the hole where the insert is located and above the surface of the neck of the journal leg gives good wear protection.
- Preferably, the insert with the foot has a certain length from its outer end to the joint of the hat. The foot has a tapered outer end. This results in the insert smoothly fitting into the hole.
- Preferably, the insert with the hat has a specific height from upper to lower side ranging from 1 mm to 4 mm. More specifically the height might be 2 mm or 3 mm, or it might even be larger than 4 mm, such as 5 mm or 6 mm. The height gives optimal protection of the journal leg.
- Optionally, the insert has a hat with a flat top surface. This surface is mainly parallel with the surface of the journal leg. This gives good wear protection in certain types of drilling machines such as HDD when drilling is performed in horizontal directions.
- Optionally, the insert has a hat with a rounded top surface. Any type of round can be used such as conical, spherical, ballistic or pointed. A rounded shape has the advantage of smooth wear protection, that is good in certain types of drilling such as rotary drilling.
- Optionally, the insert with the hat has a chamfered lower side. This ensures a good fit in the hole.
- Preferably, the insert with the diameter of the hat having a relation to the diameter of the foot that is 1,5. This gives good protection around the hole on the shirt of the journal leg.
- Preferably, the insert having a height of the hat in relation to the length of the foot being 30% to 65%. This relation can also be 35%, 40%, 45%, 50%, 55% or 60%. A certain thickness of the hat is needed in order to not brake and last for wear protection. The relation of the height of the hat versus the diameter of the foot is in the range of 20% to 40%, such that it can also be 25%, 30% or 35%. The relation of the height of the hat versus the diameter of the hat is in the range of 10% to 25%, it could also be 15% or 20%.
- Preferably, the insert has a circumference or perimeter of the foot with lengthwise extending ridges and grooves. This gives a good grip. It also results in less manual work while manufacturing.
- According to a second aspect of the present invention there is provided a journal leg of a rotary drill tool for cutting rock comprising at least one insert.
- Optionally, the journal leg of a rotary drill tool comprises a plurality of inserts being arranged at the neck of the journal leg. This is an area that is subject to a lot of wear, so the inserts give good protection.
- Optionally, the journal leg comprises at least four inserts being arranged at the shirt of the journal leg. This area is specifically in need of wear protection, so it is advantageous to arrange inserts in this area.
- Preferably, the journal leg comprises a plurality of inserts being arranged at the shirt of the journal leg such that the outer circumference of the hat is in line with the outer edge of the shirt. The inserts are placed as close to the edge as possible to in the best possible way protect the area specifically in need of wear protection.
- Preferably, the journal leg comprises a plurality of inserts being arranged at the shirt of the journal leg such that the outer circumference of the hat of each insert is arranged adjacent to or on a short distance to the neighbouring insert. This ensures a reliable wear protection.
- A specific implementation of the present invention will now be described, by way of example only, and with reference to the accompanying drawings in which:
-
Figure 1 is an external perspective view of a rotary cutting tool for mounting at one end of a drill string; -
Figure 2 is a perspective view of one of the three journal legs of the tool offigure 1 according to a specific implementation of the present invention; -
Figure 3 is a side view of one embodiment of an insert of a journal leg; -
Figure 4 is a side view of a further embodiment of an insert of a journal leg. - Referring to
figure 1 , arotary cutting tool 100 is formed as a cutting bit and comprises a cuttingend 101 at an axially forward position and an axiallyrearward attachment end 102 configured for mounting at one end of a drill string (not shown) forming part of a drill assembly operated via a drilling rig (not shown) configured to provide axial and rotational drive oftool 100.Tool 100 comprises threejournal legs 105 projecting axially forward fromattachment end 102 and being aligned slightly radially outward such that cuttingend 101 comprises a generally larger cross section thanattachment end 102. A generally conical shapedcutter 103 is mounted at an end of eachjournal leg 105 so as to be capable of rotation relative toleg 105 and independent rotation about a separate axis relative to a general rotation oftool 100 and the drill string (not shown). - Each
cone cutter 103 comprises a generally cone or dome shaped configuration. A plurality of sets of cutting buttons that are used for drilling indicated generally by reference 104 (not shown) are provided at each respective axial direction of thecone cutter 103. Eachcutting button 104 is formed from a wear resistant cemented carbide based material and may comprise any known configuration including semi-spherical, conical, ballistic, semiballistic or chisel shaped. - While drilling large number of cuttings pass in touching relation to the neck of the
legs 105. This results in excessive wear of the surface of the leg. Theleg 105 may be protected from erosion and abrasion of the cuttings byrespective protectors 110 mounted there along. Eachleg protector 110 may be an insert mounted in a respective socket formed in the respective leg portion by an interference fit. The leg protectors normally have the same diameter as the hole along the entire length. The diameter of the outer end is normally flush with the outer surface of the neck. - Referring to
figure 2 disclosing ajournal leg 5 of the present invention. Aneck 2 is the area of the leg being farthest away from the attachment end to the drill string (seen as 102 infigure 1 ). At ashirt 3 of the neck is a cone cutter attached. On the neck surface, close to theshirt 3 wear protection is important since wear is heavy in this area. The neck surface is provided with a number ofholes 4 for receivinginserts hole 4 has the same diameter along its length with a tapering close to the neck surface, as can be seen infigure 2 . In this figure fiveholes 4, whereof four of them are illustrated to haveinserts insert - The number of
holes 4 with protective inserts can be spread throughout a larger area of the neck surface, e.g. as shown infigure 1 having a large number orprotectors 110. -
Figure 3 discloses a first embodiment of aninsert 10 having a general shape of a mushroom. The insert has afoot 13 with a specific length (similar as can be seen infigure 4 ), on top of which foot ahat 16 is connected. The outer diameter of the hat is larger than the outer diameter of the foot (similar as can be seen infigure 4 ). The lower part of thehat 18 connecting to the foot having a chamfered shape to smoothly fit into thetapered hole 4. The outer diameter of thefoot 13 has a wave shaped layout withridges 14 andgrooves 15 regularly spread around the perimeter throughout the length of the foot, except for the lower part. The lower part of thefoot 17 has a tapered section, where the tapering in radial direction is somewhat larger or going deeper into the core of the foot than thegrooves 15. This results in the lower part offoot 17 having no ridges. The length L of the foot is defined as from the outer end defining the extremity of thelower part 17 to where thefoot 13 intersects with thehat 16. So the length L of the foot includes the lower tapered section. - In an alternative version of the insert of the first embodiment the foot may be designed without grooves and ridges, such that the diameter is uniform along its length except for the tapered lower part.
- The first embodiment shown in
figure 3 has an upper outer part of the insert being a flattop surface 11 of the hat. As seen from the side the hat contour from the foot and upwards can be described as the chamferedlower part 18 followed by an outer edge of thehat 12, which represents the perimeter of the outer diameter of thehat 16. The outer edge of thehat 12 seen from the side is perpendicular to thetop surface 11 or the outer edge of thehat 12 can be said to be parallel with the longitudinal axis of the foot. The contour of the hat also includes a tapered section between the outer edge of thehat 12 and thetop surface 11. The height H of thehat 16 is defined as from a point of the horizontal plane that is arranged in the intersection of the chamferedlower part 18 and the outer edge of thehat 12 to the horizontal plane representing thetop surface 11. The chamfering 18 fits into the tapered hole 4 (seen infigure 2 ). -
Figure 4 discloses a second embodiment of aninsert 20 having a general shape of a mushroom. The insert has afoot 23 with a specific length L, on top of which foot ahat 26 is connected. The outer diameter of the hat D 1 is larger than the outer diameter of the foot D2. The lower part of thehat 28 connecting to the foot having a chamfered shape to smoothly fit into thetapered hole 4. The outer diameter of thefoot 23 has a wave shaped layout with ridges and grooves (similar as the design of the foot infigure 3 ) regularly spread around the perimeter throughout the length of the foot, except for the lower part. The lower part of the foot has a tapered section, where the tapering in radial direction is somewhat larger or going deeper into the core of the foot than the grooves. This results in the lower part of foot having no ridges. As in the first embodiment the length L of the foot is defined as from the outer end to where thefoot 23 intersects with thehat 26. - There might also be an alternative design of the second embodiment having a foot without ridges and grooves. This results in a foot with a uniform diameter throughout the length. The diameter however diminishes at the lower part, which is tapered.
- The second embodiment shown in
figure 4 has an upper outer part of the insert being a roundedtop surface 21 of the hat. Thetop surface 21 can have any rounded shape such as conical, spherical or similar. As seen from the side the hat contour from the foot and upwards can be described as the chamferedlower part 28 followed by an outer edge of thehat 22, which represents the perimeter of the outer diameter of thehat 26. The outer edge of thehat 22 seen from the side is parallel with the longitudinal axis of the foot. The contour of the hat then follows with the roundtop surface 21, so the round shape is intersecting with theouter edge 22. The height H of thehat 26 is defined as from a point of the horizontal plane that is arranged in the intersection of the chamferedlower part 28 and the outer edge of thehat 22 to a horizontal plane along the tangent of the uppermost point of the roundedtop surface 21. - The outer edge of the
hat hat figure 4 ). Thisouter edge outer edge edge 3 of theshirttail 2 of the journal leg is more rounded the inserts will be somewhat more distanced due to the curvature of theedge 3.
Claims (13)
- An insert (10, 20) adapted to be mounted in a neck (2) of a journal leg (5) of a rotary drill tool for cutting rock to provide increased wear protection;wherein the insert (10, 20) has a mushroom shape comprising a hat (16, 26) and a foot (13, 23), the hat (16, 26) having a diameter (D1) and the foot (13, 23) having a diameter (D2) being smaller than the diameter (D1) of the hat (16, 26);wherein the hat (16, 26) has a chamfered lower side (18, 28) and a height (H) of the hat (16, 26) is defined as from a point of a horizontal plane that is arranged in an intersection of the chamfered lower side (18, 28) and an outer edge (12, 22) of the hat to a horizontal plane representing a top surface (11, 21) of the hat;characterized in that:
the relation of the height (H) of the hat versus the diameter (D 1) of the hat is in the range of 10% to 25%. - The insert (10, 20) as claimed in claim 1 wherein the foot (13, 23) has a certain length (L) from its outer end to the joint of the hat (16, 26);
and wherein the foot (13, 23) has a tapered outer end (17). - The insert (10, 20) as claimed in any preceding claim wherein the hat (16, 26) has a specific height (H) from upper to lower side ranging from 1 mm to 4 mm.
- The insert (10) as claimed in any preceding claim wherein the hat (16) has a flat top surface (11).
- The insert (20) as claimed in any of claims 1 to 3 wherein the hat (26) has a rounded top surface (21).
- The insert (10, 20) as claimed in any preceding claim wherein the diameter (D1) of the hat (16, 26) has a relation to the diameter (D2) of the foot (13, 23) that is 1,5.
- The insert (10, 20) as claimed in any preceding claim wherein the height (H) of the hat (16, 26) in relation to the length (L) of the foot (13, 23) is 30% to 65%.
- The insert (10, 20) as claimed in any preceding claim wherein the circumference/perimeter of the foot (13, 23) has lengthwise extending ridges (14) and grooves (15).
- A journal leg (5) of a rotary drill tool for cutting rock comprising at least one insert (10, 20) according to any preceding claim.
- The journal leg (5) of a rotary drill tool according to claim 9 comprising a plurality of inserts (10, 20) being arranged at the neck (2) of the journal leg (5).
- The journal leg (5) of a rotary drill tool according to any of claims 9 or 10 comprising at least four inserts (10, 20) being arranged at the shirt (3) of the journal leg (5).
- The journal leg (5) of a rotary drill tool according to any of claims 9 to 11 comprising a plurality of inserts (10, 20) being arranged at the shirt (3) of the journal leg (5) such that the outer circumference of the hat (16, 26) is in line with the outer edge of the shirt (3).
- The journal leg (5) of a rotary drill tool according to any of claims 9 to 12 comprising a plurality of inserts (10, 20) being arranged at the shirt (3) of the journal leg (5) such that the outer circumference of the hat (16, 26) of each insert (10, 20) is arranged adjacent to or on a short distance to the neighbouring insert (10, 20).
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES19157436T ES2963144T3 (en) | 2019-02-15 | 2019-02-15 | Insert for a trunnion leg of a rotary drilling tool |
EP19157436.7A EP3696368B1 (en) | 2019-02-15 | 2019-02-15 | Insert for a journal leg of a rotary drill tool |
PCT/EP2020/053522 WO2020165199A1 (en) | 2019-02-15 | 2020-02-12 | Insert for a journal leg and / or a cone cutter of a rotary drill tool |
PE2021001134A PE20211437A1 (en) | 2019-02-15 | 2020-02-12 | INSERT PIECE FOR A BEARING LEG AND / OR A CONICAL CUTTING ELEMENT OF A ROTARY DRILLING TOOL |
CN202080010685.1A CN113383143A (en) | 2019-02-15 | 2020-02-12 | Insert for a journal leg and/or a conical cutter of a rotary drill |
AU2020221586A AU2020221586A1 (en) | 2019-02-15 | 2020-02-12 | Insert for a journal leg and / or a cone cutter of a rotary drill tool |
CA3126758A CA3126758A1 (en) | 2019-02-15 | 2020-02-12 | Insert for a journal leg and / or a cone cutter of a rotary drill tool |
CL2021002090A CL2021002090A1 (en) | 2019-02-15 | 2021-08-09 | Insert for a bearing leg and/or tapered cutting element of a rotary drilling tool. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19157436.7A EP3696368B1 (en) | 2019-02-15 | 2019-02-15 | Insert for a journal leg of a rotary drill tool |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3696368A1 EP3696368A1 (en) | 2020-08-19 |
EP3696368B1 true EP3696368B1 (en) | 2023-10-11 |
EP3696368C0 EP3696368C0 (en) | 2023-10-11 |
Family
ID=65443739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19157436.7A Active EP3696368B1 (en) | 2019-02-15 | 2019-02-15 | Insert for a journal leg of a rotary drill tool |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP3696368B1 (en) |
CN (1) | CN113383143A (en) |
AU (1) | AU2020221586A1 (en) |
CA (1) | CA3126758A1 (en) |
CL (1) | CL2021002090A1 (en) |
ES (1) | ES2963144T3 (en) |
PE (1) | PE20211437A1 (en) |
WO (1) | WO2020165199A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3389761A (en) * | 1965-12-06 | 1968-06-25 | Dresser Ind | Drill bit and inserts therefor |
GB1343040A (en) * | 1971-04-26 | 1974-01-10 | Stebley F E | Insert for drilling unit |
FR2519064A1 (en) * | 1981-12-24 | 1983-07-01 | Stenuick Freres | BUTTON IN HARD MATERIAL FOR PERFORATION TOOL AND TOOL COMPRISING SUCH A BUTTON |
US5890550A (en) * | 1997-05-09 | 1999-04-06 | Baker Hughes Incorporation | Earth-boring bit with wear-resistant material |
GB0912022D0 (en) * | 2009-07-10 | 2009-08-19 | Element Six Holding Gmbh | Attack tool assembly |
EP2434086B1 (en) * | 2010-09-22 | 2013-05-15 | Sandvik Intellectual Property AB | A rock drill bit and a drilling assembly for percussive rock drilling |
US8522899B2 (en) | 2010-10-01 | 2013-09-03 | Varel International, Ind., L.P. | Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit |
DE102012108752B3 (en) * | 2012-09-18 | 2014-01-23 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Cutting insert and tool for machining a workpiece |
US10422186B2 (en) * | 2015-06-25 | 2019-09-24 | Halliburton Energy Services, Inc. | Hardfacing metal parts |
-
2019
- 2019-02-15 ES ES19157436T patent/ES2963144T3/en active Active
- 2019-02-15 EP EP19157436.7A patent/EP3696368B1/en active Active
-
2020
- 2020-02-12 AU AU2020221586A patent/AU2020221586A1/en active Pending
- 2020-02-12 PE PE2021001134A patent/PE20211437A1/en unknown
- 2020-02-12 CN CN202080010685.1A patent/CN113383143A/en active Pending
- 2020-02-12 CA CA3126758A patent/CA3126758A1/en active Pending
- 2020-02-12 WO PCT/EP2020/053522 patent/WO2020165199A1/en active Application Filing
-
2021
- 2021-08-09 CL CL2021002090A patent/CL2021002090A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
ES2963144T3 (en) | 2024-03-25 |
EP3696368A1 (en) | 2020-08-19 |
CA3126758A1 (en) | 2020-08-20 |
CL2021002090A1 (en) | 2022-02-04 |
AU2020221586A1 (en) | 2021-08-05 |
EP3696368C0 (en) | 2023-10-11 |
CN113383143A (en) | 2021-09-10 |
PE20211437A1 (en) | 2021-08-05 |
WO2020165199A1 (en) | 2020-08-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2118431B1 (en) | Rotary drag bit | |
US6105693A (en) | Partially enhanced percussive drill bit | |
EP2902583B1 (en) | Percussive rock drill bit with flushing grooves | |
EP2586960B1 (en) | Drill bit having a sunken button and rock drilling tool for use with such a drill bit | |
US20160090791A1 (en) | Percussive rock drill bit | |
EP3696368B1 (en) | Insert for a journal leg of a rotary drill tool | |
KR20160133445A (en) | Percussive drill bit with multiple sets of front cutting inserts | |
EP3617439B1 (en) | Drill bit with curved sludge grooves | |
JP4706639B2 (en) | Drilling tools | |
EP3690181A1 (en) | Guide adapter with wear inserts | |
EP3960981B1 (en) | Carved out drill bit | |
AU752097B2 (en) | Drill bit | |
JP4062216B2 (en) | Drilling tools | |
EP3690180A1 (en) | Percussion drill bit with wear inserts | |
EP3617438A1 (en) | Percussive drill bit with radially extended front face | |
OA21130A (en) | Carved out drill bit. | |
WO2013101264A2 (en) | Tungsten carbide bit with hardfaced nose area |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210219 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20220411 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20230526 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602019038981 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
U01 | Request for unitary effect filed |
Effective date: 20231101 |
|
U07 | Unitary effect registered |
Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI Effective date: 20231108 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: T2 Effective date: 20231011 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2963144 Country of ref document: ES Kind code of ref document: T3 Effective date: 20240325 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240211 |
|
U20 | Renewal fee paid [unitary effect] |
Year of fee payment: 6 Effective date: 20240229 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20240306 Year of fee payment: 6 |