EP1699999B1 - Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore - Google Patents

Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore Download PDF

Info

Publication number
EP1699999B1
EP1699999B1 EP04820890A EP04820890A EP1699999B1 EP 1699999 B1 EP1699999 B1 EP 1699999B1 EP 04820890 A EP04820890 A EP 04820890A EP 04820890 A EP04820890 A EP 04820890A EP 1699999 B1 EP1699999 B1 EP 1699999B1
Authority
EP
European Patent Office
Prior art keywords
power
flush
rock drilling
hole depth
percussion
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
Application number
EP04820890A
Other languages
German (de)
French (fr)
Other versions
EP1699999B2 (en
EP1699999A1 (en
Inventor
Sverker Hartwig
Jonas Henrysson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Epiroc Rock Drills AB
Original Assignee
Atlas Copco Rock Drills AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=30768861&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1699999(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atlas Copco Rock Drills AB filed Critical Atlas Copco Rock Drills AB
Publication of EP1699999A1 publication Critical patent/EP1699999A1/en
Application granted granted Critical
Publication of EP1699999B1 publication Critical patent/EP1699999B1/en
Publication of EP1699999B2 publication Critical patent/EP1699999B2/en
Anticipated expiration legal-status Critical
Active legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions

Definitions

  • the invention relates to a method for controlling power consumption during a rock drilling process of the kind defined in the preamble of claim 1.
  • the invention further relates to a system and a rock drilling apparatus of the kind defined in the preamble of claims 11 and 21, respectively.
  • Rock drilling apparatuses may be used in a number of fields.
  • rock drilling apparatuses may be used in tunnelling, underground mining, rock reinforcement, raise boring, and for drilling of blast holes, grout holes and holes for installing rock bolts.
  • Rock drilling is often performed by percussion rock drilling, in which a drill tool mounted at one end of a drill rod is provided with impact pulses by a hammer piston, arranged on the opposite side of the drill rod, and arranged to be powered to repeatedly impact upon the drill rod. At the outermost end of the drill tool there are drill bits that penetrate the rock and break it upon the impacts by the hammer piston.
  • the drill tool also may be pressed against the rock to maintain contact between the tool and the rock in order to make sure that as much impact energy as possible from the hammer piston is transmitted to the rock.
  • the drill tool may further be rotated somewhat between the impacts so that the drill bits hit a new location at every impact.
  • the drill cuttings are flushed away from the hole with a suitable medium.
  • This medium usually is air in surface drilling apparatuses, water in underground working apparatuses. Alternatively, watermist with or without a chemical additive may be used in both types of apparatuses.
  • the rock drilling apparatus further comprises main power supply means, such as a diesel engine that is used to produce power for power requiring functions of the rock drilling apparatus.
  • main power supply means such as a diesel engine that is used to produce power for power requiring functions of the rock drilling apparatus.
  • These functions may include a compressor for producing flushing pressure/flow, percussion power, rotational power, feeding power, feeding rate, hydraulic pumps, cooling fans.
  • Rock drilling may further be carried out by apparatuses utilising only rotation and applied pressure to break the rock, or apparatuses only utilising rotation to break the rock.
  • the main power supply means is dimensioned such that all functions may be used using their maximum output power rate simultaneously at all times to ensure proper function.
  • a problem with existing rock drilling equipment is that they often consume more power than necessary during a drilling process, which results in excessive fuel consumption, and heat and noise generation.
  • US-B-6637522 discloses a method for controlling power consumption during a rock drilling process with a rock drilling apparatus, wherein the rock drilling apparatus includes main power supply means for supplying power for the rock drilling process, which includes at least the sub-processes of percussion and/or rotation and flushing. If there is an increase in flush pressure above a threshold, e.g., due to the flushing mechanism being about to getting clogged, the feed pressure, rotation pressure and/or percussion pressure can be reduced so that clogging, with costly downtime for cleaning as result, can be avoided.
  • Another object of the present invention is to provide a system for controlling power consumption during a rock drilling process, which solves the above mentioned problem. This object is achieved by a system as defined in the characterising portion of claim 11.
  • the method for controlling power consumption during a rock drilling process with a rock drilling apparatus includes adjusting the flush power at least partly as a function of hole depth, and controlling at least the percussion power and/or rotational power and the flush power such that the total power consumption of each sub-process is controlled such that the power output from the main power supply means is kept at or below a predetermined level.
  • the flush power may further be adjusted at least partly as a function of hole diameter and/or diameter of the drill rod.
  • the flow of the flush medium may be kept substantially constant throughout the drilling process, i.e. the flush power increases with increased hole depth.
  • the hole depth may further be continuously measured. This has the advantage that the flow may be kept at precisely the flow level needed for managing to flush the drill hole, and thus the flush power may kept at lowest possible value throughout the drilling process, at all times.
  • the flow of the flush medium may be increased at least slightly with increasing hole depth. This has the advantage that as the hole depth increases, the flow may be increased somewhat in order to further compensate for the hole depth and/or drill rod joints and/or drill cuttings tending to get stuck on the wall of the drill hole.
  • the required flush power may be determined by computer means.
  • the computer means may be connected to a memory in which is stored a table comprising one or more of lists of types of drill tools and/or types of drill rods, and preferably calculation parameters to be used with a selected combination.
  • the flush power may be determined based on stored data concerning type of drill tool and/or type of drill rod and/or hole depth. This has the advantage that the flow of the flush medium may be kept at a desired value independent of for example which drill tool diameter and/or drill rod diameter that is used.
  • the invention may be used in conventional rock drilling apparatuses, for example in apparatuses utilising percussion or rotation or a combination thereof.
  • Fig. 1 depicts an exemplary rock drilling apparatus according to the present invention.
  • a rock drilling apparatus 1 in this exemplary a surface drill rig.
  • the drill rig 1 is shown in use drilling a hole 2, starting from a ground level, at present having reached a depth a and destined to result in a hole of depth ⁇ , for example 30 meters, the finished hole being indicated by interrupted lines.
  • the shown relation of drill rig height/hole depth is not intended to be exact.
  • the total height y of the drill might for example be 10 meters.
  • the drill rig 1 is provided with a top hammer 11 mounted via a rock drill cradle 13 on a feed 5.
  • the feed 5 is attached to a boom 15 via a feed holder 12.
  • the top hammer 11 provides percussive action to a drill tool 3 with one or more drill bits 4 via a drill rod 6 supported by a rod support 14.
  • the top hammer 11 is power supplied from a hydraulic pump 10, driven by a diesel engine 9, via a conduit attached to the feed 5 (the hydraulic feed is not shown in the figure).
  • the drill cuttings are flushed out of the hole 2 by compressed air that is fed through a tube, preferably in the center of the drill rod 6, and is discharged near the drill tool 3.
  • the compressed air flushes the drill cuttings upwards through and out of the hole 2, as indicated by the upwardly directed arrows in fig 1 .
  • other flushing media may be used as well, for example watermist with or without a chemical additive.
  • the compressed air is fed to the drill rod 6 from a compressor 8 via a tube 7.
  • the compressor 8, in turn is powered by the diesel engine 9.
  • the diesel engine 9 has to be large enough to be able to simultaneously drive both the compressor and the hydraulic pump at full rate as well as cooling fans and other appliances.
  • the compressor is always driven at or near its maximum rate during drilling, and since the compressor may consume for example 120 hp of a diesels total output of for example 300 hp, the compressor consumes a large amount of fuel, which results in the generation of large amounts of exhaust gases and of noise and heat, which further results in even more noise and fuel consumption due to the fact that cooling fans need to be driven harder.
  • these drawbacks may be reduced by driving the compressor at the power level that is currently required.
  • the flush power that is required to produce a flow of the flush medium being sufficient to evacuate the drill cuttings is relatively small, and thus the compressor need not deliver more than this required power.
  • the diesel engine in turn can be driven with reduced power output, thus resulting in decreased fuel consumption, less generated heat and less generated noise.
  • the power thus saved by driving the compressor with reduced input power may be used to allow more power to be allocated to the top hammer than otherwise is possible, which results in faster drilling in the first and/or most part of the hole.
  • the compressor power reduction may be accomplished in different ways depending on compressor type.
  • the power may be reduced by either reducing the R.P.M. or unloading the compressor by shutting the inlet.
  • FIG. 2 showing a block diagram of a control system.
  • the figure shows a drill rig 21 with a diesel engine 22.
  • the diesel engine is directly or indirectly connected to a compressor 23, a hydraulic pump 29, cooling fan(s) 24, other appliance(s) 25, a top hammer 26 and a controller 27, such as a computer.
  • the controller is further connected to the compressor 23 and/or the hydraulic pump and/or the cooling fans(s) 24 and/or of the appliances 25.
  • a sensor 28 for example mounted on the feed, provides the controller 27 with information regarding the current hole depth, and the controller 27 then transmits, for example via a CAN bus, control signals to the compressor 23 including information about which power/pressure it should deliver in order to produce a desired flow of the flush medium.
  • the controller may further send control signals to the diesel engine and/or cooling fans(s) and/or other appliances as needed, for example desired power values.
  • the controller 27 may include a memory 30 in or connected to it, in which is stored desired values for the compressor settings versus hole depths so that the compressor may be correctly adjusted. Alternatively or in addition, there may further be stored calculation parameters to be used with the hole depth to calculate a desired compressor power.
  • calculation parameters may be dependent on type of drill tool and/or type of drill rod. Preferably calculation parameters are stored for each possible combination of drill tool and/or drill rod. In an alternative embodiment there are listings stored in the memory, wherein each listing includes compressor settings versus depth for each combination. For example, there may be values stored for each cm or dm or m increased hole depth. It is also possible to store values resulting in an increasing flow as the hole depth increases in order to compensate for the factors mentioned above.
  • a sensor sensing the actual flow may be connected to the controller, which enables the controller to continuously send control signals to the compressor based on the flow values.
  • the flow may for example be calculated as litres per revolution of the compressor * revolutions per minute (R.P.M) * working time/total time.
  • the desired flow may in an alternative exemplary embodiment be set by the operator by setting a value on a control or by inputting a desired value to the controller via a man machine interface such as a display and/or a keyboard.
  • the present invention has for example the advantage that when drilling narrow holes, the compressor need not be working at full power at all during the drilling process, thus resulting in a fuel save and/or extra power for the top hammer throughout the drilling process.
  • the invention has been described in connection with a surface drill rig with a hydraulic top hammer drill rig.
  • the present invention may, however, equally well be used with any other type of drilling apparatus with separately powered flushing and drilling.
  • the invention may be used with rock drilling apparatuses utilising both percussion and rotation to perform the rock drilling.
  • the invention may also be used in rock drilling where only rotation and applied pressure is utilised to break the rock, or where only rotation is used, which for example might be the case in soft rock drilling, such as in coal mines. In the cases where rotation is used to break the rock, the power saved from reduced flushing may be utilised for faster rotation and thereby faster drilling.
  • sensors for example temperature sensors, may be connected to the controller in order to provide it with information useful in controlling the operation of the rock drilling apparatus.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

Method for controlling power consumption during a rock drilling process with a rock drilling apparatus, wherein the rock drilling apparatus includes main power supply means for supplying power for the rock drilling process, which includes at least the sub-processes of percussion and/or rotation and flushing, the method comprising the steps of:-adjusting the flush power at least partly as a function of hole depth, and controlling at least the percussion power and/or rotational power and the flush power such that the total power consumption of each sub-process is controlled.

Description

    Field of the invention
  • The invention relates to a method for controlling power consumption during a rock drilling process of the kind defined in the preamble of claim 1.
  • The invention further relates to a system and a rock drilling apparatus of the kind defined in the preamble of claims 11 and 21, respectively.
    • Background of the invention
  • Rock drilling apparatuses may be used in a number of fields. For example, rock drilling apparatuses may be used in tunnelling, underground mining, rock reinforcement, raise boring, and for drilling of blast holes, grout holes and holes for installing rock bolts.
  • Rock drilling is often performed by percussion rock drilling, in which a drill tool mounted at one end of a drill rod is provided with impact pulses by a hammer piston, arranged on the opposite side of the drill rod, and arranged to be powered to repeatedly impact upon the drill rod. At the outermost end of the drill tool there are drill bits that penetrate the rock and break it upon the impacts by the hammer piston.
  • The drill tool also may be pressed against the rock to maintain contact between the tool and the rock in order to make sure that as much impact energy as possible from the hammer piston is transmitted to the rock. To make the drilling process more efficient the drill tool may further be rotated somewhat between the impacts so that the drill bits hit a new location at every impact. The drill cuttings are flushed away from the hole with a suitable medium. This medium usually is air in surface drilling apparatuses, water in underground working apparatuses. Alternatively, watermist with or without a chemical additive may be used in both types of apparatuses.
  • The rock drilling apparatus further comprises main power supply means, such as a diesel engine that is used to produce power for power requiring functions of the rock drilling apparatus. These functions may include a compressor for producing flushing pressure/flow, percussion power, rotational power, feeding power, feeding rate, hydraulic pumps, cooling fans.
  • Rock drilling may further be carried out by apparatuses utilising only rotation and applied pressure to break the rock, or apparatuses only utilising rotation to break the rock.
  • The main power supply means is dimensioned such that all functions may be used using their maximum output power rate simultaneously at all times to ensure proper function.
  • A problem with existing rock drilling equipment, however, is that they often consume more power than necessary during a drilling process, which results in excessive fuel consumption, and heat and noise generation.
  • US-B-6637522 discloses a method for controlling power consumption during a rock drilling process with a rock drilling apparatus, wherein the rock drilling apparatus includes main power supply means for supplying power for the rock drilling process, which includes at least the sub-processes of percussion and/or rotation and flushing. If there is an increase in flush pressure above a threshold, e.g., due to the flushing mechanism being about to getting clogged, the feed pressure, rotation pressure and/or percussion pressure can be reduced so that clogging, with costly downtime for cleaning as result, can be avoided.
  • Accordingly, there is a need for an improved rock drilling method that solves the above mentioned problem.
    • Summary of the invention
  • It is an object of the present invention to provide a method for controlling power consumption during a rock drilling process that solves the above mentioned problem. This object is achieved by a method for controlling power consumption during a rock drilling process according to the characterising portion of claim 1.
  • Another object of the present invention is to provide a system for controlling power consumption during a rock drilling process, which solves the above mentioned problem. This object is achieved by a system as defined in the characterising portion of claim 11.
  • It is a further object of the present invention to provide a rock drilling apparatus that solves the above mentioned problem. This object is achieved by a rock drilling apparatus according to claim 21.
  • The method for controlling power consumption during a rock drilling process with a rock drilling apparatus, includes adjusting the flush power at least partly as a function of hole depth, and controlling at least the percussion power and/or rotational power and the flush power such that the total power consumption of each sub-process is controlled such that the power output from the main power supply means is kept at or below a predetermined level.
  • This has the advantage that only the required amount of power at a certain hole depth is used for flushing, and that the remaining power may be used for other functions and/or for saving power, resulting in for example less fuel consumption, less noise and less heat.
  • The flush power may further be adjusted at least partly as a function of hole diameter and/or diameter of the drill rod.
  • The flow of the flush medium may be kept substantially constant throughout the drilling process, i.e. the flush power increases with increased hole depth. The hole depth may further be continuously measured. This has the advantage that the flow may be kept at precisely the flow level needed for managing to flush the drill hole, and thus the flush power may kept at lowest possible value throughout the drilling process, at all times.
  • The flow of the flush medium may be increased at least slightly with increasing hole depth. This has the advantage that as the hole depth increases, the flow may be increased somewhat in order to further compensate for the hole depth and/or drill rod joints and/or drill cuttings tending to get stuck on the wall of the drill hole.
  • The required flush power may be determined by computer means. The computer means may be connected to a memory in which is stored a table comprising one or more of lists of types of drill tools and/or types of drill rods, and preferably calculation parameters to be used with a selected combination. The flush power may be determined based on stored data concerning type of drill tool and/or type of drill rod and/or hole depth. This has the advantage that the flow of the flush medium may be kept at a desired value independent of for example which drill tool diameter and/or drill rod diameter that is used.
  • The invention may be used in conventional rock drilling apparatuses, for example in apparatuses utilising percussion or rotation or a combination thereof.
    • Brief description of the drawings
    • Fig. 1 shows an exemplary embodiment of a rock drilling apparatus according to the present invention.
    • Fig. 2 shows a block diagram describing an exemplary embodiment of the present invention.
    Detailed description of preferred embodiments
  • Fig. 1 depicts an exemplary rock drilling apparatus according to the present invention. In the figure is shown a rock drilling apparatus 1, in this exemplary a surface drill rig. The drill rig 1 is shown in use drilling a hole 2, starting from a ground level, at present having reached a depth a and destined to result in a hole of depth β, for example 30 meters, the finished hole being indicated by interrupted lines. (The shown relation of drill rig height/hole depth is not intended to be exact. The total height y of the drill might for example be 10 meters.)
  • The drill rig 1 is provided with a top hammer 11 mounted via a rock drill cradle 13 on a feed 5. The feed 5 is attached to a boom 15 via a feed holder 12. The top hammer 11 provides percussive action to a drill tool 3 with one or more drill bits 4 via a drill rod 6 supported by a rod support 14. The top hammer 11 is power supplied from a hydraulic pump 10, driven by a diesel engine 9, via a conduit attached to the feed 5 (the hydraulic feed is not shown in the figure). The drill cuttings are flushed out of the hole 2 by compressed air that is fed through a tube, preferably in the center of the drill rod 6, and is discharged near the drill tool 3. The compressed air flushes the drill cuttings upwards through and out of the hole 2, as indicated by the upwardly directed arrows in fig 1. Instead of compressed air, other flushing media may be used as well, for example watermist with or without a chemical additive. The compressed air is fed to the drill rod 6 from a compressor 8 via a tube 7. The compressor 8, in turn is powered by the diesel engine 9.
  • In current drill rigs the diesel engine 9 has to be large enough to be able to simultaneously drive both the compressor and the hydraulic pump at full rate as well as cooling fans and other appliances. The compressor is always driven at or near its maximum rate during drilling, and since the compressor may consume for example 120 hp of a diesels total output of for example 300 hp, the compressor consumes a large amount of fuel, which results in the generation of large amounts of exhaust gases and of noise and heat, which further results in even more noise and fuel consumption due to the fact that cooling fans need to be driven harder.
  • According to the present invention, however, these drawbacks may be reduced by driving the compressor at the power level that is currently required. For example, at the beginning of the drilling of a hole, the flush power that is required to produce a flow of the flush medium being sufficient to evacuate the drill cuttings is relatively small, and thus the compressor need not deliver more than this required power. This means that the diesel engine in turn can be driven with reduced power output, thus resulting in decreased fuel consumption, less generated heat and less generated noise. Alternatively, the power thus saved by driving the compressor with reduced input power may be used to allow more power to be allocated to the top hammer than otherwise is possible, which results in faster drilling in the first and/or most part of the hole.
  • The compressor power reduction may be accomplished in different ways depending on compressor type. In case of for example a displacement compressor, the power may be reduced by either reducing the R.P.M. or unloading the compressor by shutting the inlet.
  • The control of the compressor power will now be described with reference to fig. 2, showing a block diagram of a control system. The figure shows a drill rig 21 with a diesel engine 22. The diesel engine is directly or indirectly connected to a compressor 23, a hydraulic pump 29, cooling fan(s) 24, other appliance(s) 25, a top hammer 26 and a controller 27, such as a computer. The controller is further connected to the compressor 23 and/or the hydraulic pump and/or the cooling fans(s) 24 and/or of the appliances 25.
  • In order to control the compressor power, a sensor 28, for example mounted on the feed, provides the controller 27 with information regarding the current hole depth, and the controller 27 then transmits, for example via a CAN bus, control signals to the compressor 23 including information about which power/pressure it should deliver in order to produce a desired flow of the flush medium. The controller may further send control signals to the diesel engine and/or cooling fans(s) and/or other appliances as needed, for example desired power values. The controller 27 may include a memory 30 in or connected to it, in which is stored desired values for the compressor settings versus hole depths so that the compressor may be correctly adjusted. Alternatively or in addition, there may further be stored calculation parameters to be used with the hole depth to calculate a desired compressor power. These calculation parameters may be dependent on type of drill tool and/or type of drill rod. Preferably calculation parameters are stored for each possible combination of drill tool and/or drill rod. In an alternative embodiment there are listings stored in the memory, wherein each listing includes compressor settings versus depth for each combination. For example, there may be values stored for each cm or dm or m increased hole depth. It is also possible to store values resulting in an increasing flow as the hole depth increases in order to compensate for the factors mentioned above.
  • In a further exemplary embodiment (not shown), a sensor sensing the actual flow may be connected to the controller, which enables the controller to continuously send control signals to the compressor based on the flow values. The flow may for example be calculated as litres per revolution of the compressor * revolutions per minute (R.P.M) * working time/total time.
  • The desired flow may in an alternative exemplary embodiment be set by the operator by setting a value on a control or by inputting a desired value to the controller via a man machine interface such as a display and/or a keyboard.
  • The present invention has for example the advantage that when drilling narrow holes, the compressor need not be working at full power at all during the drilling process, thus resulting in a fuel save and/or extra power for the top hammer throughout the drilling process.
  • In the above description, the invention has been described in connection with a surface drill rig with a hydraulic top hammer drill rig. The present invention may, however, equally well be used with any other type of drilling apparatus with separately powered flushing and drilling. For example, the invention may be used with rock drilling apparatuses utilising both percussion and rotation to perform the rock drilling. The invention may also be used in rock drilling where only rotation and applied pressure is utilised to break the rock, or where only rotation is used, which for example might be the case in soft rock drilling, such as in coal mines. In the cases where rotation is used to break the rock, the power saved from reduced flushing may be utilised for faster rotation and thereby faster drilling.
  • It should further be understood that numerous other sensors, for example temperature sensors, may be connected to the controller in order to provide it with information useful in controlling the operation of the rock drilling apparatus.

Claims (21)

  1. A method for controlling power consumption during a rock drilling process with a rock drilling apparatus, wherein the rock drilling apparatus includes main power supply means for supplying power for the rock drilling process, which includes at least the sub-processes of percussion and/or rotation and flushing, characterised in that the method comprises the steps of:
    - adjusting the flush power at least partly as a function of hole depth, and
    - controlling at least the percussion power and/or rotational power and the flush power such that the total power consumption of each sub-process is controlled.
  2. Method according to claim 1, characterised in that the flush power further is adjusted at least partly as a function of hole diameter and/or diameter of the drill rod.
  3. Method according to claim 1 or 2, characterised in that the total power consumption of each sub-process is controlled such that the power output from the main power supply means is kept at or below a predetermined level.
  4. Method according to any of the claims 1-3, characterised in that the flow of the flush medium is kept substantially constant throughout the drilling process.
  5. Method according to any of the claims 1-3, characterised in that the flow of the flush medium is increased with increasing hole depth.
  6. Method according to any of the claims 1-5, characterised in that the hole depth is continuously measured.
  7. Method according to any of the claims 1-6, characterised in that the flow of the flush medium is continuously measured.
  8. Method according to any of the claims 1-7, characterised in that the required flush power is determined by computer means.
  9. Method according to claim 8, characterised in that the computer means is connected to a memory in which is stored a table comprising one or more lists at least partly including type of drill tool and/or type of drill rod and/or hole depth and that the flush power is determined based on stored values.
  10. Method according to any of the claims 1-9, characterised in that percussion is performed by a hydraulic top hammer.
  11. System for controlling power consumption during a rock drilling process with a rock drilling apparatus, wherein the rock drilling apparatus includes main power supply means for supplying power for the rock drilling process, which includes at least the sub-processes of percussion and/or rotation and flushing, characterised in that the system comprises:
    - means for adjusting the flush power at least partly as a function of hole depth, and
    - means for controlling at least the percussion power and/or rotational power and the flush power such that the total power consumption of each sub-process is controlled.
  12. System according to claim 11, characterised in that it further includes means for adjusting the flush power at least partly as a function of hole diameter and/or diameter of the drill rod.
  13. System according to claim 11 or 12, characterised in that the system is arranged to control the total power consumption of each sub-process such that the power output from the main power supply means is kept at or below a predetermined level.
  14. System according to any of the claims 11-13, characterised in that the system is arranged to keep the flow of the flush medium substantially constant throughout the drilling process.
  15. System according to any of the claims 11-13, characterised in that the system is arranged to increase the flow of the flush medium with increasing hole depth.
  16. System according to any of the claims 11-15, characterised in that the system is arranged to continuously measure the hole depth.
  17. System according to any of the claims 11-16, characterised in that the system is arranged to continuously measure the flow of the flush medium.
  18. System according to any of the claims 11-17, characterised in that the system is arranged to determine the required flush power by computer means.
  19. System according to claim 18, characterised in that the computer means is connected to a memory arranged to store a table comprising one or more of lists at least partly including type of drill tool and/or type of drill rod and/or hole depth, and that the flush power is arranged to be determined based on stored values.
  20. System according to any of the claims 11-19, characterised in that percussion is arranged to be performed by a hydraulic top hammer.
  21. Rock drill apparatus, characterised in that is arranged to include a system according to any of the claims 11-20.
EP04820890.4A 2003-12-29 2004-11-29 Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore Active EP1699999B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0303548A SE526923C2 (en) 2003-12-29 2003-12-29 Method, system and device for controlling power consumption during a rock drilling process
PCT/SE2004/001758 WO2005064111A1 (en) 2003-12-29 2004-11-29 Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore

Publications (3)

Publication Number Publication Date
EP1699999A1 EP1699999A1 (en) 2006-09-13
EP1699999B1 true EP1699999B1 (en) 2009-04-08
EP1699999B2 EP1699999B2 (en) 2017-04-05

Family

ID=30768861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04820890.4A Active EP1699999B2 (en) 2003-12-29 2004-11-29 Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore

Country Status (15)

Country Link
US (1) US20070089907A1 (en)
EP (1) EP1699999B2 (en)
JP (1) JP4759520B2 (en)
CN (1) CN1890452B (en)
AT (1) ATE428044T1 (en)
AU (1) AU2004309309B2 (en)
BR (1) BRPI0417711B1 (en)
CA (1) CA2546364C (en)
DE (1) DE602004020511D1 (en)
ES (1) ES2322367T3 (en)
NO (1) NO336946B1 (en)
RU (1) RU2367767C2 (en)
SE (1) SE526923C2 (en)
WO (1) WO2005064111A1 (en)
ZA (1) ZA200604179B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7395788B2 (en) * 2005-03-22 2008-07-08 Atlas Copco Rock Drills Ab Drill rig and a method for controlling a fan therein
SE530829C2 (en) * 2005-06-17 2008-09-23 Atlas Copco Rock Drills Ab Method, system and rock drilling device for controlling power consumption during a rock drilling process
FI123636B (en) 2006-04-21 2013-08-30 Sandvik Mining & Constr Oy A method for controlling the operation of a rock drilling machine and a rock drilling machine
FI118778B (en) * 2006-06-01 2008-03-14 Sandvik Mining & Constr Oy A method for controlling the operation of a rock drilling machine and a rock drilling machine
US20080203734A1 (en) * 2007-02-22 2008-08-28 Mark Francis Grimes Wellbore rig generator engine power control
SE531521C2 (en) * 2007-09-07 2009-05-05 Svenska Maskin Och Tryckluft I Device for drilling in soil layers and rock
US20090312885A1 (en) * 2008-06-11 2009-12-17 Buiel Edward R Management system for drilling rig power supply and storage system
JP5396467B2 (en) * 2009-04-29 2014-01-22 アトラス コプコ ロツク ドリルス アクチボラグ Air flow monitoring structure and air flow monitoring method in rock drilling apparatus
US8646549B2 (en) * 2009-10-08 2014-02-11 Atlas Copco Drilling Solutions Llc Drilling machine power pack which includes a clutch
US8443916B2 (en) * 2009-12-17 2013-05-21 Caterpillar Global Mining Equipment Llc Hose tensioner for a rock drill system
EP2369127A1 (en) * 2010-03-09 2011-09-28 Sandvik Intellectual Property AB A rock drill bit, a drilling assembly and a method for percussive rock drilling
EA023567B1 (en) * 2010-04-20 2016-06-30 Сандвик Интеллекчуал Проперти Аб Method of controlling air compressor of compressor plant
DE102011010675A1 (en) * 2010-05-21 2011-11-24 Max Wild Gmbh Drilling rig, in particular horizontal drilling rig
SE535475C2 (en) * 2010-08-26 2012-08-21 Atlas Copco Rock Drills Ab Method and system for controlling a power source at a rock drilling device and rock drilling device
SE535418C2 (en) 2010-08-26 2012-07-31 Atlas Copco Rock Drills Ab Method and system for controlling a compressor at a rock drilling device and rock drilling device
SE535421C2 (en) * 2010-08-26 2012-07-31 Atlas Copco Rock Drills Ab Method and system for determining a change in a flushing medium flow and rock drilling device
EP2572793B1 (en) 2011-09-23 2017-04-26 Sandvik Intellectual Property AB A wear tip holder for a VSI crusher, a kit comprising a wear tip holder, and a method of reducing the wear rate of a wear tip holder
MX2016002291A (en) * 2013-08-23 2017-01-20 Master Drilling South Africa (Pty) Ltd Integrated inspection and maintenance raise boring method and an associated drill string arrangement.
CN103510847B (en) * 2013-09-10 2016-03-30 安徽三山机械制造有限公司 A kind of rotary drill of controlled Compressed Gas injection rate
US10132130B2 (en) 2015-08-18 2018-11-20 Joy Global Surface Mining Inc Combustor for heating of airflow on a drill rig
CN106640390B (en) * 2016-11-04 2022-10-18 中国石油大学(华东) Energy-saving control system and method for diesel engine for well drilling
WO2018101967A1 (en) * 2016-12-02 2018-06-07 Halliburton Energy Services, Inc. Reducing noise produced by well operations
KR101932753B1 (en) 2017-05-17 2019-03-20 주식회사수산중공업 Method and Apparatus for Energy Saving of Hydraulic Drill
EP4041035B1 (en) 2019-10-07 2023-09-06 Minimeis AS A child carrying device with a weight distribution system and method of attaching
CN115135204A (en) 2019-10-07 2022-09-30 迷尼美斯公司 Load bearing device with weight distribution support
RU2770472C1 (en) * 2021-05-27 2022-04-18 федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет» System for the destruction of rock formation

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550697A (en) * 1966-04-27 1970-12-29 Henry Hobhouse Drilling condition responsive drive control
US3550696A (en) * 1969-07-25 1970-12-29 Exxon Production Research Co Control of a well
US4793421A (en) * 1986-04-08 1988-12-27 Becor Western Inc. Programmed automatic drill control
FI86008C (en) * 1989-04-06 1992-06-25 Tampella Oy Ab Method and apparatus for controlling a rock drilling machine
FI90276C (en) * 1991-01-03 1994-01-10 Tamrock Oy Procedure for drilling a hole in rock
FI87830C (en) * 1991-05-23 1993-02-25 Tamrock Oy OVER ANCHORING FOER STARRY AV EN BERGBORRMASKINS LUFTMATNING
SE508003C2 (en) * 1992-04-09 1998-08-10 Atlas Copco Rock Drills Ab Rock drilling device with storage device
JPH06146254A (en) * 1992-11-16 1994-05-27 Kawasaki Chishitsu Kk Dry boring process of ground and rock-bed and device therefor
US5358058A (en) * 1993-09-27 1994-10-25 Reedrill, Inc. Drill automation control system
US5704436A (en) * 1996-03-25 1998-01-06 Dresser Industries, Inc. Method of regulating drilling conditions applied to a well bit
US6637522B2 (en) * 1998-11-24 2003-10-28 J. H. Fletcher & Co., Inc. Enhanced computer control of in-situ drilling system
JP2000337074A (en) * 1999-05-27 2000-12-05 Furukawa Co Ltd Automatic boring device
SE0003916L (en) * 2000-10-27 2002-02-19 Sandvik Ab Guide tubes for mechanical handling in a rig for rock drilling and drill string for mechanical handling
FI115553B (en) * 2001-05-15 2005-05-31 Sandvik Tamrock Oy Arrangement for drilling control

Also Published As

Publication number Publication date
JP4759520B2 (en) 2011-08-31
BRPI0417711A (en) 2007-03-20
EP1699999B2 (en) 2017-04-05
ES2322367T3 (en) 2009-06-19
ZA200604179B (en) 2008-03-26
NO336946B1 (en) 2015-11-30
WO2005064111A1 (en) 2005-07-14
ATE428044T1 (en) 2009-04-15
SE0303548L (en) 2005-06-30
AU2004309309A1 (en) 2005-07-14
NO20063385L (en) 2006-09-21
CN1890452A (en) 2007-01-03
RU2006123038A (en) 2008-01-10
CA2546364A1 (en) 2005-07-14
RU2367767C2 (en) 2009-09-20
SE526923C2 (en) 2005-11-22
JP2007517150A (en) 2007-06-28
US20070089907A1 (en) 2007-04-26
CA2546364C (en) 2013-09-17
AU2004309309B2 (en) 2010-04-08
BRPI0417711B1 (en) 2015-08-04
SE0303548D0 (en) 2003-12-29
CN1890452B (en) 2010-08-25
EP1699999A1 (en) 2006-09-13
DE602004020511D1 (en) 2009-05-20

Similar Documents

Publication Publication Date Title
EP1699999B1 (en) Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore
RU2397305C2 (en) Procedure for control of rig operation and drilling rig
EP1451444B1 (en) Method and equipment for controlling operation of rock drilling apparatus
CN102171411B (en) A method and an arrangement for controlling a rock drill
US9347285B2 (en) Method and system for controlling a compressor at a rock drilling apparatus and a rock drilling apparatus
CN114041003A (en) Method and system for estimating wear of a drill bit
EP2609288B1 (en) Method and system for controlling a power source at a rock drilling apparatus and rock drilling apparatus
EP2021580A1 (en) Rock drilling rig and method of controlling thereof

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

17P Request for examination filed

Effective date: 20060523

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20070803

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK 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: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602004020511

Country of ref document: DE

Date of ref document: 20090520

Kind code of ref document: P

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2322367

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

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: 20090408

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

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: 20090908

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

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: 20090408

Ref country code: SE

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: 20090708

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: 20090808

Ref country code: NL

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: 20090408

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

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: 20090408

Ref country code: EE

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: 20090408

Ref country code: DK

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: 20090408

Ref country code: RO

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: 20090408

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: SANDVIK MINING AND CONSTRUCTION OY

Effective date: 20100107

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

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: 20090408

Ref country code: BE

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: 20090408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

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: 20090708

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100730

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091129

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: 20090709

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

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: 20091009

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

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: 20090408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

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: 20090408

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20141127

Year of fee payment: 11

Ref country code: ES

Payment date: 20141126

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20141103

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20141126

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602004020511

Country of ref document: DE

Representative=s name: PATENTANWAELTE OLBRICHT, BUCHHOLD, KEULERTZ PA, DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 428044

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151129

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20151129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151129

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151129

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151129

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20161230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151130

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

GRAT Correction requested after decision to grant or after decision to maintain patent in amended form

Free format text: ORIGINAL CODE: EPIDOSNCDEC

27A Patent maintained in amended form

Effective date: 20170405

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R102

Ref document number: 602004020511

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602004020511

Country of ref document: DE

Representative=s name: BOULT WADE TENNANT LLP, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 602004020511

Country of ref document: DE

Representative=s name: PATENTANWAELTE OLBRICHT, BUCHHOLD, KEULERTZ PA, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 602004020511

Country of ref document: DE

Owner name: EPIROC ROCK DRILLS AKTIEBOLAG, SE

Free format text: FORMER OWNER: ATLAS COPCO ROCK DRILLS AB, OEREBRO, SE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602004020511

Country of ref document: DE

Representative=s name: BOULT WADE TENNANT LLP, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20191127

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004020511

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210601

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20231019

Year of fee payment: 20