EP2122108B1 - Arrangement and method for drilling - Google Patents

Arrangement and method for drilling Download PDF

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Publication number
EP2122108B1
EP2122108B1 EP07848195.9A EP07848195A EP2122108B1 EP 2122108 B1 EP2122108 B1 EP 2122108B1 EP 07848195 A EP07848195 A EP 07848195A EP 2122108 B1 EP2122108 B1 EP 2122108B1
Authority
EP
European Patent Office
Prior art keywords
drill
pipe
rod assembly
adapter
drill pipe
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
EP07848195.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2122108A1 (en
EP2122108A4 (en
Inventor
Paavo Kolari
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.)
Terramare Oy
Original Assignee
Terramare Oy
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
Application filed by Terramare Oy filed Critical Terramare Oy
Publication of EP2122108A1 publication Critical patent/EP2122108A1/en
Publication of EP2122108A4 publication Critical patent/EP2122108A4/en
Application granted granted Critical
Publication of EP2122108B1 publication Critical patent/EP2122108B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/12—Devices for placing or drawing out wear protectors
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes

Definitions

  • the invention relates to equipment according to the pream-ble of claim 1 for underwater drilling and to a method according to the preamble of claim 16 for underwater drilling.
  • the invention relates to equipment comprising a drilling rig, drill hammer, drill rod assembly formed of one or more interconnected drill rods and operationally connected at the top end thereof to the drill hammer and comprising at the bottom end thereof a drill bit and a drill pipe placed around the drill rod assembly and supported to the drilling rig, the bottom end of the drill pipe being provided with a ring bit, and to a method of drilling carried out using a drill rod assembly formed of one or more drill rods connected to the drilling rig, the drill rod assembly being operationally connected at the top end thereof to the drill hammer and comprising at the bottom end thereof a drill bit, and by means of a drill pipe mountable around the drill rod assembly and supported to the drilling rig, the bottom end of the drill pipe being provided with a ring bit.
  • underwater drilling is conventionally carried out using a tophammer drill installed to a drilling rig that moves up and down in a stepless manner.
  • the drilling takes place by means of one or more drill bits installed to the bottom end of a drill rod assembly consisting of one or more drill rods, while the top end of the drill rod assembly is connected to the drill hammer.
  • the bottom end of the drilling rig is provided with a fixedly installed drill pipe that extends for a predetermined distance, for about 2 metres for example, below the bottom end of the rig and, the drill rod assembly being inserted through the pipe in such a manner that when drilling through a layer of soil on top of a rock, the drill bit is slightly below the bottom end of the drill pipe.
  • the drill pipe is meant to prevent the layer of soil on top of the rock from falling into the drilled hole and blocking the drill hole.
  • drilling is carried out through the drill pipe and once the desired depth is reached, the drill rod assembly is lifted upwards in such a manner that the drill bit rises above the top end of the drill pipe, the drill pipe thus being vacant for the blast to be lowered into the drill hole.
  • the drill pipe is thus fixedly arranged in relation to the drilling rig, its downward movement being achieved by moving the entire drilling rig downward.
  • a rock or other hard material at the bottom of the sea is often covered with a varying thickness of a softer soil through which the drill pipe is taken to prevent this softer material from collapsing or falling into the drilled hole. Accordingly, the drill bit is pressed downward by means of the drilling rig mass and the drill bit until the drill pipe reaches the surface of the rock, the drilling being then continued only by means of the drill bit installed to the drill rod assembly, while the drill pipe stays in place.
  • the softer layer of soil often contains stones or other hard layers or materials, or the rock being drilled is fragmented, whereby the pushing of the drill pipe through the softer layer of soil or the fragmented rock layer is difficult and often extremely time-consuming or totally unsuccessful and thus drilling cannot be carried out at the location concerned. It is also possible that the sea bottom has to be dredged first to clean it by removing the layer of soil in question. Clean dredging is a separate work phase and increases costs significantly.
  • the object of the invention is achieved by means of equipment according to the characterizing part of claim 1, the equipment being characterized in that it further comprises connecting means for optionally connecting the drill pipe to the drill rod assembly between the drill hammer and the drill bit, the drill rod assembly and the drill pipe thus forming an operational unit for transferring the rotational and/or impact energy of the drill hammer from the drill rod assembly to the drill pipe, and for releasing the connection between the drill pipe and the drill rod assembly, whereby the rotational and/or impact energy received by the drill rod assembly from the drill hammer is not transferred to the drill pipe.
  • the object of the invention is achieved by a method according to the characterizing part of claim 16, the method being characterized in that it comprises the steps of
  • the invention is based on the idea that the drill pipe and the drill rod assembly are made operationally interconnectable and disconnectable to allow drilling to be carried out either simultaneously by means of a drill bit provided at the bottom end of the drill pipe assembly and a drill pipe ring bit installed around the drill pipe assembly, or by using only the drill bit provided at the bottom end of the drill pipe assembly by feeding the drill pipe assembly through the drill pipe locked to the drilling rig.
  • the drill rod assembly and the drill pipe thus form an operational assembly that provides a simple and economic means for drilling through the soil, irrespective of the layers of soil.
  • the drill rod assembly and the drill pipe do not need to lifted up to connect or disconnect them, but they may be connected and disconnected when the drill rod assembly and the drill pipe are in their operational positions.
  • the drill rod assembly and the drill pipe may be connected and disconnected by rotating the drill rod in relation to the drill pipe.
  • a hole may be drilled to the bottom of the sea by using first the drill bit on the drill rod assembly and the ring bit on the drill pipe connected to the drill rod assembly for receiving the impact and rotational energy of the drill hammer, the drill rod assembly and the drill pipe thus forming an operational unit.
  • the drill pipe When the drilling has reached a desired depth, the drill pipe may be disconnected and released from the drill rod assembly, and the drilling may be further continued by means of the drill bit while the drill rod assembly moves through the drill pipe, without changing the configuration of the drill rod assembly.
  • the connecting means comprise a rod adapter on the drill rod assembly, a pipe adapter on the drill pipe and an intermediate sleeve arranged to set between the rod adapter and the pipe adapter so as to allow the rod adapter to be connected to the pipe adapter by means of the intermediate sleeve, the intermediate sleeve transferring the rotational and impact energy of the drill hammer to the pipe adapter and further to the ring bit at the bottom end of the drill pipe, and, correspondingly, to allow the connection to the pipe adapter to be released, whereby the rotational and/or impact energy received by the drill rod assembly from the drill hammer is not transferred to the drill pipe.
  • An advantage of the method and system of the invention is that they provide an easy and simple means for providing a connection between a drill pipe and a drill rod assembly and for releasing the connection in a short period of time in a situation where a rock or other hard material at the bottom of the sea is covered with a soft and less homogeneous layer of soil.
  • the structure of the equipment of the invention is simple and easy to service, because it does not contain complex parts.
  • all the parts may be made easily replacable, which allows the connecting means to be changed according to a particular drill rod or drill pipe or damaged parts thereof to be rapidly replaced.
  • the charging of a drill hole with explosive becomes significantly faster, because a shorter drill pipe may be used than in the prior art, which means that the drill rod assembly does not need to be lifted up all the way nor to be dismantled as is the case with a drill pipe that extends to the drill hammer, but it suffices to raise the drill bit above the top end of the drill pipe for emptying the drill pipe for the charging.
  • the accelerated drilling time brings costs savings.
  • FIG. 1A illustrates an example of drilling equipment of the invention to be used for underwater drilling.
  • a drilling platform 32 or a similar support structure is provided with a drilling rig 2 mounted to and supported by the platform.
  • the drilling rig 2 is mounted to the drilling platform 32 so that it is movable up and down to allow the drilling rig 2 to be moved both in a horizontal and a vertical relation to the drilling platform 32.
  • a drill hammer 4 installed to the drilling rig 2 so as to be movable in a vertical direction in relation to the drilling rig 2.
  • the drill hammer 4 in this embodiment used as an example is a tophammer drill.
  • Drilling is carried out via a drill rod assembly 8, which is operationally connected to the drill hammer 4 and may consist of one or more drill rods 6.
  • the drill rods 6 are interconnected by means of a screw joint, for example, that may comprise GT-60 threads.
  • the bottom end of the drill rod assembly is provided with a drill bit 10, also known as a pilot bit, to be used for the actual drilling of the hole.
  • the top end of the drill rod assembly 8 is further operationally connected to the drill hammer 4 that provides the drill rod assembly 8 and thereby the drill bit 10 the rotational and impact energy needed in the drilling.
  • the drill bit 10 may be any drill bit suitable for a particular drilling to be carried out.
  • a drill pipe 12 mounted to the bottom end of the drilling rig 2 or to the vicinity of the bottom end there is a drill pipe 12, which may consist of one long uniform drill pipe or two or more interconnected drill pipe parts.
  • the drill pipe parts may be interconnected by means of a screw joint, for example, or a similar joint.
  • the bottom end of the drill pipe 12 is provided with a ring bit 14 for drilling a hole.
  • the ring bit may be any ring bit suitable for a particular drilling to be carried out.
  • the drill pipe 12 is dimensioned so as to allow the both the drill bit 10 and the drill rod assembly 8 to inserted through the drill pipe 12 and to be moved inside the drill pipe 12 in relation to the drill pipe 12.
  • the drill pipe 12 of the invention is mounted to and supported by the drilling rig 2 in such a way that the drill pipe 12 may be moved in a vertical direction, i.e. in the longitudinal direction of the drilling rig 2 in relation to the drilling rig 2 and rotated about its longitudinal axis in relation to the drilling rig 2 by means of the ring bit 14 for drilling to be enabled.
  • the movability of the drill pipe 12 may be achieved by means of support bearings, rail means or other similar means.
  • the drilling rig 2 is further provided with gripping means 30 to allow the drill pipe 12 to be locked to the drilling rig 2, when desired, to render the drill pipe 12 fixed in relation to the drilling rig and unable to move in the longitudinal direction of the drilling rig 2 or to rotate in relation to the drilling rig 2.
  • the gripping means 30 may be implemented so that they prevent the movement of the drill pipe in relation to the drilling rig, but allow the pipe to rotate in relation to the drilling rig, or, on the contrary, allow the drill pipe to move in relation to the drilling rig and prevent the rotation thereof.
  • the gripping means 30 may comprise curved claws, tongs or similar grippers to be placed around the drill pipe 12, for example.
  • the gripping means 30 are preferably implemented so that they can be operated from the drilling platform 32 or from a practical control site.
  • the rock 5 or other similar hard matter on the bottom of the sea is often covered by a softer layer of soil 3. Therefore, when a hole is to be drilled to the sea bottom 1, it is to be taken into account that if the drill bit 10 and the drill pipe 12 are lifted from the drilled hole, the hole is filled with soil collapsing or falling into the hole from the layer of soil 3. For this reason the drill pipe 12 must be left into the hole to keep the hole clean for charging with the explosive.
  • this layer of soil 3 comprises not only soft soil but also rocks or other loose hard objects and therefore in many cases the drill pipe 12 cannot be taken through the layer of soil simply by pushing. In this case drilling by means of a drill pipe 12 is advantageous, because it allows these hard areas to be penetrated.
  • the drilling equipment is provided with connecting means 15 to interconnect the drill rod assembly 8 and the drill pipe 12.
  • connecting means 15 to interconnect the drill rod assembly 8 and the drill pipe 12.
  • a further essential aspect of the invention is that the drill pipe 12 is connected to the drill rod assembly 8 between the drill hammer 4 and the drill bit 10, the length of the drill pipe 12 thus being substantially shorter than the corresponding length of the drill rod assembly 8.
  • the drill pipe 12 may be shorter than the drill rod assembly 8, because the layer of soil 3 on top of the rock 5 usually has a limited thickness and because the drill pipe 12 is connected to the drill rod assembly 8 between the ends thereof.
  • the connecting means 15 are preferably implemented in such a way that the drill pipe 12 and the drill rod assembly 8 may be interconnected and disconnected without having to lift up the drill rod assembly and/or the drill pipe 12.
  • the connecting means 15 are implemented so that the connection between the drill pipe 12 and the drill rod assembly 8 may be implemented and released while the drill rod assembly 8 and the drill pipe 12 and, correspondingly, the drill bit and the ring bit are in their operating position, i.e. in the water and/or lowered to the sea bottom 1.
  • 'sea bottom 1' refers to any bottom underneath the water of a water area.
  • the connecting means 15 are implemented so that the connection between the drill pipe 12 and the drill rod assembly 8 may be made and released by rotating the drill rod assembly 8 and the drill pipe 12 in relation to each other.
  • This means that the connection may be achieved for example by rotating the drill rod assembly 12 in a first direction of rotation about the longitudinal axis thereof in relation to the drill pipe, in which case this first direction of rotation may correspond to a normal direction of drill rotation used during drilling.
  • the connection may be opened by rotating the drill rod assembly 8 in relation to the drill pipe 12 in a second direction of rotation opposite to the first direction of rotation.
  • the drill rod assembly 8 may be rotated by means of the drill hammer 4 or by some other means of rotation.
  • other type of connecting means may be used, such as pin connecting means or bolt connecting means. What is essential is that the connecting means may be operated without lifting the drill rod assembly 8 and the drill pipe 12 from the water.
  • Figures 2A and 2B show a solution according to the present invention for interconnecting the drill rod assembly 8 and the drill pipe 12.
  • the connecting means comprise a rod adapter 16 connectable to the drill rod assembly 8 by a screw coupling.
  • the rod adapter 16 may be fastened between two drill rods 6 of the drill rod assembly 8.
  • the drill rod 6 is provided with an external thread 7 and the rod adapter with a corresponding internal thread 17, the other end of the rod adapter 16 being, correspondingly, provided with an external thread 9, which engages with the inner thread of the next drill rod (not shown).
  • the rod adapter 16 may be integrally implemented into the drill rod assembly 8 or into one of its drill rods 6.
  • the rod adapter 16 On its outer surface the rod adapter 16 comprises protrusions or shoulders 22 protruding from its surface. In a particular case the shoulders 22 may be replaced by threads, or by recesses formed to the outer surface of the rod adapter 16.
  • the connecting means comprise an intermediate sleeve 20 arranged and dimensioned in such a way that when arranged around the drill rod assembly 8, it is capable of sliding thereon. The inner surface of the intermediate sleeve 20 is provided with protrusions or shoulders 24.
  • the shoulders 24 of the intermediate sleeve 20 and the shoulders 22 of the rod adapter 16 are arranged so as to allow the intermediate sleeve 20 to be connected to the rod adapter 16 by bringing the intermediate sleeve 20 and the rod adapter 16 into contact with each other while the intermediate sleeve 20 is installed around the rod adapter 16 and by rotating the intermediate sleeve 20 and the rod adapter 16 with respect to each other.
  • the shoulders 22 and 24 of the rod adapter 16 and the intermediate sleeve 20 become interconnected, which prevents the intermediate sleeve 20 from moving with respect to the rod adapter 16 in the direction of the longitudinal axis of the rod adapter 16.
  • the shoulders 22 and 24 are shaped in such a way that no matter what the position of the intermediate sleeve 20, it cannot slide entirely over the rod adapter 16 and below the rod adapter 16.
  • the connecting means further comprise a pipe adapter 18 preferably implemented at the top of the drill pipe 12 or to the vicinity thereof.
  • the pipe adapter 18 may be a tubular part attached to the top end of the drill pipe 12 by welding, screw coupling or by some other means.
  • the pipe adapter 18 may be integrally formed into the drill pipe 12.
  • the inner surface of the pipe adapter 18 is provided with protrusions or shoulders 28 formed in such a way that they are capable of locking to the shoulders 26 on the outer surface of the intermediate sleeve 20, when the intermediate sleeve 20 and the pipe adapter 18 are brought into contact with each other and the intermediate sleeve 20 and the pipe adapter 18 are rotated with respect to each other.
  • the shoulders 28 and 26 of the pipe adapter 18 and the intermediate sleeve 20 become interconnected, whereby the movement of the intermediate sleeve 20 and also that of the rod adapter 16 and the drill rod assembly 8 in relation to the pipe adapter 18 is prevented in the direction of the longitudinal axis of the pipe adapter 18 and the drill pipe and also that of the drill rod assembly 8.
  • the shoulders 28 and 26 are shaped in such a way that no matter what the position of the intermediate sleeve 20, it cannot slide entirely over the pipe adapter 18 and, therefore, when the intermediate sleeve 20 is in place, the rod adapter 16 cannot slide entirely through the pipe adapter 18 either.
  • the pipe adapter 18 and/or its shoulders 28 are dimensioned and arranged in such a way that when the intermediate sleeve 20 is not on the rod adapter 16, the rod adapter 16 and the drill rod assembly 8 are able to slide through the pipe adapter 18.
  • these connecting means of the embodiment disclosed above are in the connected position.
  • connection between the rod adapter 16 and the pipe adapter 18 are implemented so as to allow the connection between the rod adapter 16 and the pipe adapter 18 to be opened or released by rotating the rod adapter 16 and the intermediate sleeve 20 in relation to the pipe adapter 18 in a direction opposite to the direction of drilling rotation, i.e. in a second direction of rotation.
  • the drill pipe 12 can be locked to the drilling rig using the above-mentioned gripping means 30 to hold the drill pipe 12 in place in relation to the drill rod assembly 8.
  • the intermediate sleeve 20 and the rod adapter 16 are rotated in relation to each other to open the connection between them, and the intermediate sleeve 20 is gripped with the lifting means to lift it above the rod adapter 16, whereby it is no longer able to connect to the rod adapter 16.
  • This allows the drill rod assembly 8 to be moved downward through the intermediate sleeve 20 and the pipe adapter 18.
  • Figure 1A shows the initial situation at the start of a new drilling.
  • the drill rod assembly 8 has been provided with the rod adapter 16, the drill pipe 12 with the pipe adapter 18, and the intermediate sleeve 20 has been inserted above the rod adapter 16 on the drill rod assembly 8.
  • the drill rod assembly 8 and, at the same time, also the rod adapter 16 and the intermediate sleeve 20 are then lowered and rotated in relation to the drill pipe 12, which in this case is locked to the drilling rig 2 by gripping means 30.
  • the rod adapter 16 and the intermediate sleeve 20 engage with each other and with the pipe adapter 18.
  • the intermediate sleeve 20 and the rod adapter 16 may have been interconnected in advance.
  • the connecting means are implemented to the drill rod assembly 8 and to the drill pipe 12 in such a way that when they are interconnected, the drill bit 10 at the bottom of the drill rod assembly penetrates for a predetermined distance below the bottom end of the drill pipe 12 and the ring bit 14 installed thereto.
  • the drilling rig 2 is lowered downward and the rotational and impact functions of the drill hammer 4 are switched on, whereby the drilling takes place by means of a drill bit 10 installed to the drill rod assembly 8 and the ring bit 14 installed to the drill pipe 12, the rotational and impact energy of the drill hammer 4 being transmitted via the connecting means 15 to the drill pipe and further to the ring bit 14.
  • the drilling carried out by means of the drill bit 10 and ring bit 14 continues until the drill pipe 12 and the ring bit 14 installed thereto have been drilled through the soil layer 3 on the rock 5 and/or for some distance into the rock 5.
  • the drill hammer 4 is switched off and the drill pipe 12 is fixedly locked to the drilling rig 2 by gripping means 30 so that the movement and rotation of the drill pipe 12 in relation to the drilling rig 2 is prevented.
  • the connection between the drill pipe 12 and the drill rod assembly 8 is released while the drill pipe 12 is kept in place in the drilled hole.
  • the connection may be opened by rotating and lifting the drill rod assembly 8, whereby the intermediate sleeve 20 is disconnected from the rod adapter 18.
  • the rotation is preferably carried out in a direction opposite to the direction of rotation of the drilling.
  • the rotating of the drill rod assembly 8 then continues in the direction opposite to the direction of rotation of the drilling until the vertical surfaces of the inner shoulders of the intermediate sleeve 20 and the vertical shoulders of the rod adapter 16 come into contact with each other.
  • the intermediate sleeve 20 is then lifted up at least above the vertical shoulders of the rod adapter 16 by lifting means that grab the intermediate sleeve 20 by means of a lifting fork or shoulders and hold it in place for as long as necessary.
  • the lifting means may comprise a hydraulic cylinder and/or a lifting fork or some other structure. In that case the lifting fork may be coupled to a vertically operating hydraulic cylinder.
  • connection may be released or it may open also so that first opens the connection between the rod adapter 16 and the intermediate sleeve 20 and only then the connection between the intermediate sleeve 20 and the pipe adapter 18.
  • the order in which the connection opens is influenced by the difference in the frictions between the intermediate sleeve 20 and the rod adapter 16 and between the intermediate sleeve 20 and the pipe adapter 18 and the fact that the unwinding force to the connection comes from the inside through the rod adapter.
  • the drill hammer 4 is switched on again and drilling continues only by means of the drill rod assembly 8 and the drill bit 10 installed thereto, as shown in Figure 1 B .
  • the drill pipe 12 stays in place and the drill rod assembly 8 moves downward through the drill pipe 12, the rod adapter 16 coming along as a part of the drill rod assembly 8.
  • the drill rod assembly 8 is lifted up by means of the lifting mechanism of the drill hammer 4, for example, to a sufficient height to extract the drill bit 10 entirely from the drill pipe 12 as shown in Figure 1 C .
  • the drill rod assembly 8 is lifted up the intermediate sleeve 20 on the rod adapter 16 rises with it.
  • the drill pipe 12 is further kept in place to prevent the soil layer 3 from falling into the drilled hole 34.
  • the drill pipe 12 When the drill rod assembly 8 has been lifted above the drill pipe 12, the drill pipe 12 is empty and the drilled hole 34 may be charged with explosive through the drill pipe 12, as shown in Figure 1 D , by means of charging devices 38.
  • the charging may be carried out manually or by pumping the explosive into the hole 34.
  • a primer is placed therein.
  • the drilling rig 2 After the charging the drilling rig 2, and with it the drill pipe 12, are lifted to the upper position and the fuse 36 extending from the hole 34 is lifted onto the drilling rig 32 and combined with other blasting cables possibly used, as shown in Figure 1 E . Finally, the explosive charge may be detonated for excavating the rock. Alternatively, a plural number of holes may be drilled and charged and all the drilled holes may be exploded simultaneously. The work then proceeds to a new drilling point and the method starts from the beginning, as shown in Figure 1F . It is to be noted that the drilling rig may comprise one or more drilling apparatuses of the invention to allow a plural number of holes to be drilled and charged simultaneously.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
EP07848195.9A 2006-12-08 2007-12-05 Arrangement and method for drilling Active EP2122108B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20065782A FI123411B (fi) 2006-12-08 2006-12-08 Järjestely ja menetelmä porausta varten
PCT/FI2007/050663 WO2008068385A1 (en) 2006-12-08 2007-12-05 Arrangement and method for drilling

Publications (3)

Publication Number Publication Date
EP2122108A1 EP2122108A1 (en) 2009-11-25
EP2122108A4 EP2122108A4 (en) 2015-09-30
EP2122108B1 true EP2122108B1 (en) 2016-11-02

Family

ID=37623798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07848195.9A Active EP2122108B1 (en) 2006-12-08 2007-12-05 Arrangement and method for drilling

Country Status (6)

Country Link
EP (1) EP2122108B1 (no)
ES (1) ES2605365T3 (no)
FI (1) FI123411B (no)
NO (1) NO342275B1 (no)
PT (1) PT2122108T (no)
WO (1) WO2008068385A1 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112431548B (zh) * 2020-11-16 2023-04-14 深圳百勤建设工程有限公司 轻型人工钻孔成井施工工艺
CN113187381B (zh) * 2021-03-19 2023-11-21 中基发展建设工程有限责任公司 一种高水位长螺旋成井施工工艺
CN117161441B (zh) * 2023-06-27 2024-06-07 江苏正贸仓储设备制造有限公司 一种智能仓储货架组装设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI36025A (fi) * 1957-10-18 1966-07-11 Skanska Cementgjuteriet Ab Förfarande vid borrning av hål i ett under ett jordlager beläget berg samt för tillämpning av förfarandet avsedd anordning
US3227230A (en) * 1961-02-21 1966-01-04 Atlas Copco Ab Combination ring and central drill bit drilling equipment
US3190378A (en) * 1962-09-18 1965-06-22 Sr Paul H Davey Apparatus for simultaneously drilling and casing a well hole
SE320343B (no) * 1963-09-11 1970-02-09 Stabilator Ab
FI96356C (fi) * 1994-12-13 1999-12-18 Valto Ilomaeki Porausmenetelmä ja teräasetelma menetelmän toteuttamiseksi
US6761231B1 (en) * 2002-05-06 2004-07-13 The Charles Machines Works, Inc. Rotary driven drilling hammer
FI115661B (fi) * 2002-12-23 2005-06-15 Robit Rocktools Ltd Teräsovitelma
JP4001346B2 (ja) * 2004-10-05 2007-10-31 鹿島建設株式会社 削孔装置
JP2006291660A (ja) * 2005-04-14 2006-10-26 Okabe Co Ltd 二重管削孔装置及び小口径二重管削孔装置を用いたアンカー材設置方法

Also Published As

Publication number Publication date
PT2122108T (pt) 2016-12-09
EP2122108A1 (en) 2009-11-25
FI20065782A0 (sv) 2006-12-08
ES2605365T3 (es) 2017-03-14
WO2008068385A1 (en) 2008-06-12
FI123411B (fi) 2013-04-15
EP2122108A4 (en) 2015-09-30
NO20091993L (no) 2009-07-07
NO342275B1 (no) 2018-04-30
FI20065782A (fi) 2008-06-09

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