WO2016128618A1 - Outil de forage pour forage par percussion, adaptateur, ensemble trépan, et procédé de fabrication de l'ensemble adaptateur et de l'ensemble trépan - Google Patents

Outil de forage pour forage par percussion, adaptateur, ensemble trépan, et procédé de fabrication de l'ensemble adaptateur et de l'ensemble trépan Download PDF

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Publication number
WO2016128618A1
WO2016128618A1 PCT/FI2016/050082 FI2016050082W WO2016128618A1 WO 2016128618 A1 WO2016128618 A1 WO 2016128618A1 FI 2016050082 W FI2016050082 W FI 2016050082W WO 2016128618 A1 WO2016128618 A1 WO 2016128618A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill
tool
adapter
bit assembly
drill bit
Prior art date
Application number
PCT/FI2016/050082
Other languages
English (en)
Inventor
Joonas SOKKA
Mika Koskinen
Antti Leino
Original Assignee
Oy Robit Rocktools Ltd
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 Oy Robit Rocktools Ltd filed Critical Oy Robit Rocktools Ltd
Publication of WO2016128618A1 publication Critical patent/WO2016128618A1/fr

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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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017—Protecting measuring instruments
    • 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
    • E21B17/042—Threaded
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism

Definitions

  • the invention relates to a drill tool for percussive drilling as defined in the preamble of independent claim 1.
  • the invention also relates to an adapter for use in the drill tool as defined in claim 14 and to a drill bit assembly for use in the drill tool as defined in claim 15.
  • the invention also relates to an adapter as defined in the preamble of independent claim
  • the invention also relates to a drill bit assembly as defined in the preamble of independent claim 17.
  • the invention relates also to a method for manufacturing an adapter as defined in claim 18 and to a method for manufacturing to a drill bit assembly as defined in claim 19.
  • Publication WO2014/037619 presents a method for surveying drill holes and to a drilling arrangement and to a borehole survey assembly.
  • the method comprises a first providing step for providing a drill tool comprising at least one drill rod and a drill bit assembly, and a second providing step for providing a borehole survey tool comprising sensor means for measuring a borehole.
  • a drill tool comprising a central flushing channel for conducting flushing fluid to the drill bit assembly is used, and the borehole survey tool is arranged in the arranging step in the central flushing channel so that flushing fluid can flow in the central flushing channel past the borehole survey tool.
  • the object of the invention is to provide a drill tool for percussive drilling, an adapter, and a drill bit assembly, which provides for easy transmitting of signals containing data of the borehole drilled by the drill tool from a borehole survey tool in a central flushing channel of a drill tool.
  • the drill tool of the invention is characterized by the definitions of independent claim 1.
  • the invention also relates to an adapter for use in the drill tool as defined in claim 14 and to a drill bit assembly for use in the drill tool as defined in claim 15.
  • the adapter of the invention is correspondingly characterized by the definitions of independent claim 16.
  • the drill bit assembly of the invention is correspondingly characterized by the definitions of independent claim 17.
  • the for manufacturing an adapter is characterized by the definitions of claim 18 and the method for manufacturing to a drill bit assembly is characterized by the definitions of claim 19.
  • the invention is based on providing the drill tool with at least one signal transparent member extending between the central flushing channel, where the borehole survey tool is arranged, and the circumferential outer surface of the drill tool.
  • Said at least one signal transparent member allows signals originating from the transmitter of the borehole survey tool to be transmitted from the borehole survey tool to a receiver without the need to remove the borehole survey tool from the central flushing channel of the drill tool.
  • Figure 1 shows a part of a first embodiment of the drill tool
  • Figure 2 shows in partly cut view the first embodiment of the drill tool shown in figure 1
  • Figure 3 shows a part of a second embodiment of the drill tool
  • Figure 4 shows in partly cut view the second embodiment of the drill tool shown in figure
  • Figure 5 shows a part of a third embodiment of the drill tool
  • Figure 6 shows in partly cut view the third embodiment of the drill tool shown in figure Figure 7 shows a part of a fourth embodiment of the drill tool
  • Figure 8 shows in partly cut view the fourth embodiment of the drill tool shown in figure
  • FIG 9 shows the drill bit assembly, the adapter and the borehole survey tool of the first embodiment of the drill tool shown in figures 1 and 2,
  • Figure 10 is another illustration of the drill bit assembly, the adapter and the borehole survey tool of the first embodiment of the drill tool shown in figures 1 and 2,
  • FIG 11 is still another illustration of the drill bit assembly, the adapter and the borehole survey tool of the first embodiment of the drill tool shown in figures 1 and 2,
  • Figure 12 shows the drill string assembly, the adapter and the borehole survey tool of the third embodiment of the drill tool shown in figures 5 and 6,
  • Figure 13 is another illustration of the drill string assembly, the adapter and the borehole survey tool of the third embodiment of the drill tool shown in figures 5 and 6,
  • Figure 14 is still another illustration of the drill string assembly, the adapter and the borehole survey tool of the third embodiment of the drill tool shown in figures 5 and 6,
  • Figure 15 shows the drill bit assembly of the drill bit assembly of the second embodiment of the drill tool shown in figures 3 and 4 and of the third embodiment of the drill tool shown in figures 5 and 6,
  • Figure 16 is another illustration of the drill bit assembly of the second embodiment of the drill tool shown in figures 3 and 4 and of the third embodiment of the drill tool shown in figures 5 and 6,
  • Figure 17 is still another illustration of the drill bit assembly of the second embodiment of the drill tool shown in figures 3 and 4 and of the third embodiment of the drill tool shown in figures 5 and 6,
  • Figure 18 shows in cut- view the adapter of the first embodiment of the drill tool shown in figures 1 and 2,
  • Figure 19 shows in cut view a detail of a drill tool
  • Figure 20 shows in cut view a detail of a drill tool.
  • the drill tool has a drill string assembly 1 comprising at least one drill rod, a drill bit assembly 2, and a central flushing channel 3 configured to conduct flushing fluid (not shown in the figures) to the drill bit assembly 2.
  • the drill tool is a percussive drill tool.
  • the drill string assembly 1 and the drill bit assembly 2 are non-overlapping entities. That is, the drill string assembly 1 does not form a part of the drill bit assembly 2, or vice versa. However, the drill string assembly 1 and the drill bit assembly 2 may naturally be connectable to each other.
  • the drill tool has a borehole survey tool 4 in the central flushing channel 3.
  • the borehole survey tool 4 is configured to obtain data of a borehole drilled by the drill tool and the borehole survey tool 4 has a transmitter 5 for transmitting signals containing data of the borehole drilled by the drill tool.
  • the borehole survey tool 4 can be the borehole survey tool 4 presented in publication WO2014/037619, which is hereby incorporated by reference.
  • the borehole survey tool 4 may comprise an outer casing 25 of elastomer for providing protection for the borehole survey tool 4.
  • the elastomer is preferably transparent to signals originating from the transmitter 5 of the borehole survey tool 4.
  • the elastomer is more preferably transparent to signals containing data of the borehole drilled by the drill tool originating from the transmitter 5. That is, the elastomer does not conduct such signals, but the elastomer permits said signals to pass through.
  • such signals are electro-magnetic signals, more suitably RF-signals.
  • the drill tool has at the borehole survey tool 4 at least one signal transparent member 6 extending between the central flushing channel 3 and a circumferential outer surface 7 of the drill tool.
  • transparent is meant that said at least one signal transparent member 6 is permeable to signals originating from the transmitter 5 of the borehole survey tool 4.
  • the signal transparent member 6 is preferably transparent to signals containing data of the borehole drilled by the drill tool originating from the transmitter 5. That is, the elastomer does not conduct such signals, but the elastomer permits said signals to pass through.
  • signals are electro-magnetic signals, more suitably RF-signals.
  • the borehole survey tool 4 may be suspended in the central flushing channel 3 of the drill bit assembly 2 between a first damping means 8 and a second damping means 9.
  • the borehole survey tool 4 may be suspended in the central flushing channel 3 of the drill bit assembly 2 between a first damping means 8 and a second damping means 9 so that the first damping means 8 and a second damping means 9 are pre-compressed.
  • Said at least one signal transparent member 6 may be configured to prevent the borehole survey tool 4 from rotating with respect to the central flushing channel 3 by being in contact with the borehole survey tool 4 inside the central flushing channel 3.
  • an elongated external member 26 such as pin, a bolt or a screw may be configured to prevent the borehole survey tool 4 from rotating with respect to the central flushing channel 3 by being in contact with the borehole survey tool 4 inside the central flushing channel 3, as is shown in figure 20.
  • the drill tool may comprise an opening 10 extending between a circumferential outer surface 7 of the drill tool and the central flushing channel 3, and said at least one signal transparent member 6 may be provided in the opening 10 so that the signal transparent member 6 forms a part of the circumferential outer surface 7 of the drill tool.
  • the signal transparent member 6 may be provided in the opening 10 so that the circumferential outer surface 7 of the drill tool at the signal transparent member 6 has a recess 23 at the signal transparent member 6.
  • a purpose of the recess 23 is to protect the signal transparent member 6 from drill cuttings (not shown in the figures).
  • the opening may be provided with grooves 24 into which the signal transparent member 6 extend for holding the signal transparent member 6 in place in the recess 23, as is shown in figure 19.
  • the opening 10 may taper between the central flushing channel 3 and the circumferential outer surface 7 of the drill tool in the direction towards the circumferential outer surface 7 of the drill tool in order to prevent the signal transparent member 6 from moving in a radial direction in the opening 10.
  • the signal transparent member 6 may be made of polymer or porous metal.
  • Figures 1 and 2 shows a first embodiment of the drill tool.
  • an adapter 11 is provided between the drill string assembly 1 and the drill bit assembly 2.
  • the adapter 11 is configured to connect the drill bit assembly 2 to the drill string assembly 1.
  • the adapter 11 has a central flushing channel section 20 forming a part of the central flushing channel 3 of the drill tool, and a circumferential outer surface 7 of the adapter 11 forms a part of the circumferential outer surface 7 of the drill tool.
  • the borehole survey tool 4 is provided in the central flushing channel section 20 of the adapter 11.
  • said at least one signal transparent member 6 is provided in the adapter 11 so that said at least one signal transparent member 6 extends between the central flushing channel section 20 of the adapter 11 and the circumferential outer surface 7 of the adapter 11.
  • Another advantage with this first embodiment of the drill tool is that, provided that the adapter 11 is connected to a drill string of drill string assembly 1, which drill string having a full length, the number of connections, in which percussive impact is lost, is lower.
  • the drill bit assembly 2 may be provided with a first male thread 12a on a first male section 13a configured to connect the drill bit assembly 2 to a first female thread 14a on a first female section 15a of the adapter 11.
  • the adapter 11 may comprise a first impact surface 16 abutting a second impact surface 17 of the drill bit assembly 2, so that the first impact surface 16 of the adapter 11 is formed of an end surface of the first female section 15a of the adapter 11, and so that the first impact surface 16 of the adapter 11 and the second impact surface 17 of the drill bit assembly 2 extends perpendicularly to a longitudinal axis of the drill tool.
  • the adapter 11 may comprise a second female thread 14b on a second female section 15b configured to connect the adapter 11 to a second male thread 12b on a second male section 13b of the drill string assembly 1.
  • the adapter 11 comprises a second female thread 14b on a second female section 15b configured to connect the adapter 11 to a second male thread 12b on a second male section 13b of the drill string assembly 1, an fourth impact surface 19 on the end of the second male section 13b of the drill string assembly 1, which fourth impact surface 19 extends perpendicularly to a longitudinal axis of the drill tool, may abut a third impact surface 18 on the bottom of the second female section 15b of the adapter 11, which third impact surface 18 extends perpendicularly to a longitudinal axis of the drill tool, as is shown in figures 1 and 2.
  • the adapter 11 may comprise a third impact surface 18 abutting a fourth impact surface 19 of the drill string assembly 1, so that the third impact surface 18 of the adapter 11 is formed of an end surface of the second female section 15b of the adapter 11 and so that the third impact surface 18 of the adapter 11 and the fourth impact surface 19 of the drill string assembly 1 extends perpendicularly to a longitudinal axis of the drill tool.
  • the borehole survey tool 4 may be suspended in the central flushing channel section 20 of the adapter 11 between a first damping means 8 and a second damping means 9 so that the first damping means 8 and a second damping means 9 are pre-compressed.
  • the first damping means 8 may in this first embodiment of the drill tool be pre-compressed between the first male section 13a of the drill bit assembly 2 and the borehole survey tool 4.
  • the second damping means 9 may in this first embodiment of the drill tool be pre-compressed between a collar 22 in the central flushing channel section 20 of the adapter 11 and the borehole survey tool 4, as is shown in figure 2.
  • the second damping means 9 may be pre-compressed between the second male section 13b of the drill string assembly 1 and the borehole survey tool 4.
  • Figures 3 and 4 shows a second embodiment of the drill tool.
  • the drill bit assembly 2 is provided with a third female section 15c having a third female thread 14c configured to connect the drill bit assembly 2 to a second male section 13b having a second male thread 12b of the drill string assembly 1.
  • the drill bit assembly 2 has a central flushing channel section 20 forming a part of the central flushing channel 33 of the drill tool, so that the central flushing channel section 20 is provided between a drill head 21 of the drill bit assembly 2 and the third female section 15c of the drill bit assembly 2.
  • the borehole survey tool 4 is provided in the central flushing channel section 20 of the drill bit assembly 2.
  • said at least one signal transparent member 6 is provided in the drill bit assembly 2 so that said at least one signal transparent member 6 extends between the central flushing channel section 20 of the drill bit assembly 2 and a circumferential outer surface 7 of the drill bit assembly 2.
  • the drill string assembly 1 may comprise a fourth impact surface 19 abutting a second impact surface 17 of the drill bit assembly 2, so that the second impact surface 17 of the drill bit assembly 2 is formed of an end surface of the third female section 15c of the drill bit assembly 2, and so that the fourth impact surface 19 of the drill string assembly 1 and the second impact surface 17 of the drill bit assembly 2 extends perpendicularly to a longitudinal axis of the drill tool.
  • the borehole survey tool 4 may be suspended in a central flushing channel section 20 of the drill bit assembly 2 between a first damping means
  • the first damping means 8 may this second embodiment of the drill tool be pre-compressed between a collar 22 in the central flushing channel section 20 of the drill bit assembly 2 and the borehole survey tool 4, and the second damping means 9 may be pre-compressed between the borehole survey tool 4 and the second male section 13b of the drill string assembly 1, as is shown in figure 4.
  • Figures 5 and 6 shows a third embodiment of the drill tool.
  • an adapter 11 is provided between the drill string assembly 1 and the drill bit assembly 2.
  • the adapter 11 is configured to connect the drill bit assembly 2 to the drill string assembly 1.
  • the adapter 11 has a central flushing channel section 20 forming a part of the central flushing channel 3 of the drill tool, and a circumferential outer surface 7 of the adapter 11 forms a part of the circumferential outer surface 7 of the drill tool.
  • the drill bit assembly 2 is provided with a third female section 15c having a third female thread 14c configured to connect the drill bit assembly 2 to a third male section 13c having a third male thread 12c of the adapter 11.
  • the adapter 11 is provided with a second female section 15b having a second female thread 14b configured to connect the drill bit assembly 2 to a second male section 13b having a second male thread 12b of the drill string assembly 1.
  • the drill bit assembly 2 has a central flushing channel section 20 forming a part of the central flushing channel 3 of the drill tool.
  • the borehole survey tool 4 is provided in the central flushing channel section 20 of the drill bit assembly 2.
  • said at least one signal transparent member 6 is provided in the drill bit assembly 2 so that said at least one signal transparent member 6 extends between the central flushing channel section 20 of the drill bit assembly 2 and a circumferential outer surface 7 of the drill bit assembly 2.
  • the adapter 11 may comprise a first impact surface 16 abutting a second impact surface 17 of the drill bit assembly 2, wherein the second impact surface 17 of the drill bit assembly 2 is formed of an end surface of the third female section 15c of the drill bit assembly 2, and the adapter 11 may comprise a third impact surface 18 abutting a fourth impact surface 19 of the drill string assembly 1, wherein the third impact surface 18 of the adapter 11 being formed of an bottom surface of the second female section 15b of the adapter 11 and wherein the fourth impact surface 19 of the drill string assembly 1 being formed of an end surface of the second male section 13b of the drill string assembly 1, and wherein the first impact surface 16 of the adapter 11, the second impact surface 17 of the drill bit assembly 2, third impact surface 18 of the adapter 11, and the fourth impact surface 19 of the drill string assembly 1 extend perpendicularly to a longitudinal axis of the drill tool, as is shown in figures 5 and 6.
  • the adapter 11 may, as an alternative to what is shown in figures 5 and 6, comprise a first impact surface 16 abutting a second impact surface 17 of the drill bit assembly 2, wherein the second impact surface 17 of the drill bit assembly 2 is formed of an end surface of the third female section 15c of the drill bit assembly 2, and the adapter 11 may comprise a third impact surface 18 abutting a fourth impact surface 19 of the drill string assembly 1, wherein the third impact surface 18 of the adapter 11 being formed of an end surface of the second female section 15b of the adapter 11, and wherein the first impact surface 16 of the adapter 11, the second impact surface 17 of the drill bit assembly 2, third impact surface 18 of the adapter 11, and the fourth impact surface 19 of the drill string assembly 1 extend perpendicularly to a longitudinal axis of the drill tool.
  • the borehole survey tool 4 may be suspended in the central flushing channel section 20 of the drill bit assembly 2 between a first damping means 8 and a second damping means 9 so that the first damping means 8 and a second damping means 9 are pre-compressed.
  • the first damping means 8 may in this third of the drill tool embodiment be pre-compressed between a collar 22 in the central flushing channel section 20 of the drill bit assembly 2 and the borehole survey tool 4, and the second damping means 9 may be pre-compressed between the borehole survey tool 4 and the third male section 13c of the adapter 11, as is shown in figure 6.
  • Figures 7 and 8 shows a fourth embodiment of the drill tool.
  • the drill bit assembly 2 is provided with a first male section 13a having a first male thread 12a configured to connect the drill bit assembly 2 to a fourth female section 15d having a fourth female thread 14d of the drill string assembly 1.
  • the drill string assembly 1 has a central flushing channel section 20 forming a part of the central flushing channel of the drill tool.
  • the borehole survey tool 4 is provided in the central flushing channel section 20 of the drill string assembly 1.
  • the at least one signal transparent member 6 is provided in the drill string assembly 1 so that said at least one signal transparent member 6 extends between the central flushing channel section 20 of the drill string assembly 1 and a circumferential outer surface 7 of the drill string assembly 1.
  • the drill string assembly 1 may comprise a fourth impact surface 19 abutting a second impact surface 16 of the drill bit assembly 2, so that the fourth impact surface 19 of the drill string assembly 1 is formed of an end surface of the fourth female section 15d of the drill bit assembly 2, and so that the fourth impact surface 19 of the drill string assembly 1 and the second impact surface 17 of the drill bit assembly 2 extend perpendicularly to a longitudinal axis of the drill tool.
  • the borehole survey tool 4 may be suspended in the central flushing channel section 20 of the drill string assembly 1 between a first damping means 8 and a second damping means 9 so that the first damping means 8 and a second damping means 9 are pre-compressed.
  • the first damping means 8 may be pre-compressed between the borehole survey tool 4 and the first male section 13a of the drill bit assembly 2
  • the second damping means 9 may be pre-compressed between a collar 22 in the central flushing channel section 20 in the drill string assembly 1 and the borehole survey tool 4, as is shown in figure 8.
  • the invention relates also to an adapter 11 for use in the drill tool as described earlier to connect the drill bit assembly 2 of the drill tool to the drill string assembly 1 of the drill tool.
  • the adapter has a first female section 15a having a first female thread 14a for connecting a drill bit assembly 2 provided with a first male section 13a having a first male thread 12a to the adapter 11.
  • the adapter has a second female section 15b having a second female thread 14b for connecting the adapter 11 to a second male section 13b having a second male thread 12b of the drill string assembly 1.
  • the adapter has a central flushing channel section 20 extending between the first female section 15a and the second female section 15b.
  • the adapter has at least one signal transparent member 6 extending between the central flushing channel section 20 and a circumferential outer surface 7 of the adapter 11.
  • the invention relates also to a drill bit assembly 2 for use in the drill tool as described earlier.
  • the drill bit assembly 2 has a drill head 21.
  • the drill bit assembly 2 a third female section 15c has a third female thread 14c for connecting a male section 13b, 13c having a male thread 12b, 13c of the drill tool to the drill bit assembly 2.
  • the drill bit assembly 2 a central flushing channel section 20 extending between the drill head 21 and the third female section 15c.
  • the drill bit assembly 2 has at least one signal transparent member 6 extending between the central flushing channel section 20 of the drill bit assembly 2 and a circumferential outer surface 7 of the drill bit assembly 2.
  • the adapter 11 has a first female section 15a having a first female thread 14a for connecting a drill bit assembly 2 provided with a first male section 13a having a first male thread 12a to the adapter 11.
  • the adapter 11 has a second female section 15b having a second female thread 14b for connecting the adapter 11 to a second male section 13b having a second male thread 12b of the drill string assembly 1.
  • the adapter 11 has a central flushing channel section 20 extending between the first female section 15a and the second female section 15b.
  • the adapter 11 has at least one signal transparent member 6 extending between the central flushing channel section 20 and a circumferential outer surface 7 of the adapter 11.
  • drill bit assembly 2 for use in a drill tool having a drill string assembly 1 comprising at least one drill rod and some embodiments and variants of the drill bit assembly 2 will be described in greater detail.
  • the drill bit assembly 2 has a drill head 21.
  • the drill bit assembly 2 has a third female section 15c having a third female thread 14c for connecting a male section 13b, 13c having a male thread 12b, 12c of the drill tool to the drill bit assembly 2.
  • the drill bit assembly 2 has a central flushing channel section 20 extending between the drill head 21 and the third female section 15c.
  • the drill bit assembly 2 has at least one signal transparent member 6 extending between the central flushing channel section 20 of the drill bit assembly 2 and a circumferential outer surface 7 of the drill bit assembly 2.
  • the invention relates also to a method for manufacturing an adapter, such as an adapter for use in the drill tool, wherein the method comprises forming said at least one signal transparent member 6 by casting polymer in an opening 10 extending between the central flushing channel section 20 of the adapter 11 and a circumferential outer surface 7 of the adapter 11.
  • the invention relates also to a method for manufacturing a drill bit assembly, such as a drill bit assembly for use in the drill tool, wherein the method comprises forming said at least one signal transparent member 6 by casting polymer in an opening 10 extending between the central flushing channel section 20 of the drill bit assembly 2 and a circumferential outer surface 7 of the drill bit assembly 2.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un outil de forage pour forage par percussion. L'outil de forage comprend un ensemble de train de tiges de forage (1), un ensemble trépan (2), un canal central de chasse (3) et un outil d'inspection de trou de forage (4) dans le canal central de chasse (3). L'outil d'inspection de trou de forage (4) est configuré pour obtenir des données d'un trou de forage foré par l'outil de forage et l'outil d'inspection de trou de forage (4) comprend un émetteur (5) destiné à émettre des signaux contenant des données du trou de forage foré par l'outil de forage. L'outil de forage comprend, au niveau de l'outil d'inspection de trou de forage (4), au moins un élément transparent au signal (6) qui s'étend entre le canal central de chasse (3) et une surface extérieure circonférentielle (7) de l'outil de forage. L'invention concerne également un adaptateur (11), un ensemble trépan (1), un procédé de fabrication de l'adaptateur (11) et un procédé de fabrication de l'ensemble trépan (1).
PCT/FI2016/050082 2015-02-11 2016-02-10 Outil de forage pour forage par percussion, adaptateur, ensemble trépan, et procédé de fabrication de l'ensemble adaptateur et de l'ensemble trépan WO2016128618A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20155092 2015-02-11
FI20155092A FI127492B (en) 2015-02-11 2015-02-11 Impact Drilling Tools

Publications (1)

Publication Number Publication Date
WO2016128618A1 true WO2016128618A1 (fr) 2016-08-18

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PCT/FI2016/050082 WO2016128618A1 (fr) 2015-02-11 2016-02-10 Outil de forage pour forage par percussion, adaptateur, ensemble trépan, et procédé de fabrication de l'ensemble adaptateur et de l'ensemble trépan

Country Status (2)

Country Link
FI (1) FI127492B (fr)
WO (1) WO2016128618A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021174025A1 (fr) * 2020-02-27 2021-09-02 Baker Hughes Oilfield Operations Llc Éléments tubulaires transparents aux signaux pour opérations de fond de trou

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FI20155092A (fi) 2016-08-12

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