EP0379584A1 - Drehschlagbohrwerkzeug - Google Patents

Drehschlagbohrwerkzeug Download PDF

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Publication number
EP0379584A1
EP0379584A1 EP19890906303 EP89906303A EP0379584A1 EP 0379584 A1 EP0379584 A1 EP 0379584A1 EP 19890906303 EP19890906303 EP 19890906303 EP 89906303 A EP89906303 A EP 89906303A EP 0379584 A1 EP0379584 A1 EP 0379584A1
Authority
EP
European Patent Office
Prior art keywords
stone
destroying
socket
housing
drilling tool
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.)
Withdrawn
Application number
EP19890906303
Other languages
German (de)
English (en)
French (fr)
Inventor
Yakov Alexandrovich Goikhman
Georgy Mikhailovich Krjukov
Melis Ivanovich Onotsky
Georgy Matveevich Sorokin
Alexei Vladimirovich Filatov
Viktor Vyacheslavovich Tsarapkin
Vadim Petrovich Yakimov
Gennady Alexandrovich Smirnov
Ivan Ivanovich Nikiforov
Alexandr Innokentievich Burdukovsky
Sergei Viktorovich Daibov
Alexandr Safronovich Kurdjukov
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.)
KRASNOYARSKY FILIAL VSESOJUZNOGO NAUCHNO-PROIZVODSTVENNOGO OBIEDINENIA STROITELNYKH I DOROZHNYKH MASHIN
VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT TRANSPORTNOGO STROITELSTVA(TsNIIS)
Original Assignee
KRASNOYARSKY FILIAL VSESOJUZNOGO NAUCHNO-PROIZVODSTVENNOGO OBIEDINENIA STROITELNYKH I DOROZHNYKH MASHIN
VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT TRANSPORTNOGO STROITELSTVA(TsNIIS)
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 KRASNOYARSKY FILIAL VSESOJUZNOGO NAUCHNO-PROIZVODSTVENNOGO OBIEDINENIA STROITELNYKH I DOROZHNYKH MASHIN, VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT TRANSPORTNOGO STROITELSTVA(TsNIIS) filed Critical KRASNOYARSKY FILIAL VSESOJUZNOGO NAUCHNO-PROIZVODSTVENNOGO OBIEDINENIA STROITELNYKH I DOROZHNYKH MASHIN
Publication of EP0379584A1 publication Critical patent/EP0379584A1/de
Withdrawn legal-status Critical Current

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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
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • 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
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • 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
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units

Definitions

  • the present invention relates to drilling technology and relates in particular to a rotary impact drilling tool.
  • the rotary impact drilling tool according to the invention is most suitably used for bringing down explosive, oil extraction and geological exploration boreholes in highly abrasive field rocks.
  • a tool for rotary impact drilling (SU, A, 284918), which contains a housing that serves for cooperation with the impact and rotary device and contains a cup-shaped holder.
  • the socket In the socket are arranged in concentric rings and axially displaceable stone-destroying elements with shafts that cooperate with the housing.
  • the socket is provided with a means for its axial displacement with respect to the housing.
  • the housing and the holder each have at least one through channel for the passage of a flushing medium which is used to flush the drilling mud out of the borehole.
  • the known tool can be used for drilling boreholes in weak and medium wear-causing rocks.
  • the use of this tool in heavily wearing rocks is difficult because the stone-destroying elements wear out quickly due to the longest length of the wearing part and there are no means available to compensate for the wear of the stone-destroying elements. This requires a low level strength of the drilling tool.
  • the invention has for its object to provide a rotary impact drilling tool with such a structural design of the stone-destroying elements and with such a length of the axial displacement of the socket with respect to the housing, which ensure an increase in the length of the wearing part of the stone-destroying elements in the drilling process.
  • each stone-destroying element in the circumferential ring is provided with a means for its determination in the socket, the axial displacement length with respect to the housing at least equal to that Length of the wearing part of the stone-destroying element.
  • each stone-destroying element in the circumferential ring is annular grooves and that the means for determining said rock-destroying element is designed as a spring-loaded blocking element which engages with the associated ring passage and is arranged in a blind cavity which is provided in the socket and communicates with a peripheral channel in which the stone-destroying element can be accommodated .
  • the distance (L) between the adjacent ring passages present on the side surface of the shaft of the stone-destroying element is based on the following relationship is selected, where R 1 is the radius of the rotary impact drilling tool (in m), R 2 is the radius of the socket (in m) and ⁇ is the angle of inclination of each stone-destroying element in the circumferential ring to the face of the socket on the side of the rock to be destroyed, which between 45 and 89 °.
  • the length (H) of the wear part of each stone-destroying element is based on the relationship is selected, where L is the distance between the adjacent ring grooves - on the side surface of the shaft of the stone-destroying element (in m) and n ⁇ 2 is the number of ring grooves on the side surface of the stone-destroying element.
  • the means for determining each stone-destroying element in the circumferential ring with respect to the socket can be designed as a bushing made of resilient material, which encloses the stone-destroying element mentioned and is arranged in a blind cavity provided in the socket, which is in contact with the space between the socket and communicates with the housing.
  • the means for axially displacing the socket with respect to the housing being a slot connection.
  • each section of the end face of the housing, with which the shaft of the stone-destroying element cooperates in the circumferential ring is straight and runs perpendicular to the longitudinal axis of the said stone-destroying element.
  • the length of the section of the end face of the housing with which the rock-destroying element of the circumferential ring cooperates during drilling must be greater than the length of the section of the end face of the shaft of the said rock-destroying element which interacts with the mentioned section of the housing.
  • the total area of the passage cross section of the passage channels mentioned in the version for the passage of the flushing medium is smaller than the total area of the passage cross section of the passage channels provided in the housing for the passage of the flushing medium.
  • the rotary impact drilling tool contains a housing 1 (FIG. 1) which serves for cooperation with an impact and rotary device (not shown), and a cup-shaped version 2.
  • a housing 1 FIG. 1
  • FIG. 1 central and circumferential channels 3 and 4 are executed, which are arranged in concentric rings.
  • All stone-destroying elements 5, 6 have shafts 7 and 8, which cooperate with the end face of the housing 1.
  • the socket 2 is provided with a means 9 for its axial displacement with respect to the housing 1.
  • said means 9 are designed as a threaded connection, a thread 10 being cut on the outer side surface of the housing, while another thread 11 is being carried out on the inner surface of the wall of the socket 2.
  • At least one through-channel 12 is provided in the housing 1 for the passage of a flushing medium, one end of which is connected to a flushing medium source (not shown) and the other end to the space 13 between the end face of the housing 1 and the inner surface of the socket 2.
  • At least one through channel 14 is also embodied in the socket for the passage of the flushing medium from the space 13 into the borehole 15.
  • each stone-destroying element 6 in the circumferential ring is provided with a means 16 (FIG. 2) for its determination in the version 2.
  • This means is designed as a locking element 17 with a spring 18, which is arranged in a blind cavity 19, which is designed in the version 2 and is in communication with the peripheral channel 4.
  • the locking element 17 acts with a belonging gene annular groove 20 together, which is provided on the side surface of the shaft 8.
  • the distance L between the adjacent ring grooves 20 is dimensioned as follows: where R 1 is the radius of the rotary impact drilling tool (in m) (R 1 is the distance between the tool axis and the point of contact of the stone-destroying element of the circumferential ring with the borehole wall), R 2 is the radius of the socket (in m) and ⁇ is the angle of inclination means each stone-destroying element 6 in the circumferential ring to the end face 21 of the socket 2 on the side of the rock to be destroyed.
  • the angle ⁇ is in a range from 45 to 89 °.
  • the interval (0.8-1.0) in the above relationship is chosen from the following considerations.
  • the upper limit value (1.0) ensures the limitation of the maximum diameter of the borehole to the diameter of the tool according to the invention when drilling subsequent boreholes after compensation for the wear of the stone-destroying elements 6.
  • the choice of the lower limit value (0.8) is dependent on this that the compensation of the wear with the transfer of the locking element * is correct: borehole 15 17 (Fig. 2) in the adjacent annular groove 20 must be made too often if this value is less than 0.8.
  • the length H (FIG. 1) of the wear part of the stone-destroying elements 5, 6 is selected from the following relationship where n ⁇ 2 is the number of annular grooves 20 on the side surface of the shaft 8.
  • the length H of the wear part of the stone-destroying elements 5, 6 is proportional to the distance L between the adjacent ring grooves 20 and is determined by the number of these ring grooves 20, while in the absence of locking elements 17 (FIG. 2) the greatest length H ( 1) the wear part of the stone-destroying elements 5, 6 is limited by a value which is determined from the following relationship: This limitation follows from the fact that jamming of the tool must be avoided when carrying out the installation and removal work.
  • the length H of the wear part of the stone-destroying elements 5, 6 corresponds to the amount of axial displacement of the socket 2 with respect to the housing 1 in order to make full use of the tool with regard to the stability of the stone-destroying elements 5, 6.
  • the rotary impact drilling tool according to the invention works as follows.
  • the tool is placed at the point where the borehole 15 is to be drilled.
  • a pneumatic or hydraulic hammer drill placed over the tool (not shown) transfers rotation and impact impulses to the tool.
  • the force acting in the axial direction is transmitted via the housing 1 to the stone-destroying elements 5, 6 which are supported on the base of the borehole 15, while the shafts 7 and 8 are supported against the end face of the housing 1.
  • the tool is raised.
  • the stone-destroying elements 6, which are accommodated in the circumferential channels 4 are secured against falling out over the entire length of the wearing part by the locking elements 17, thereby preventing the possibility of jamming of the tool in the borehole 15 during installation and removal work.
  • the support elements 22 are attached to the end face 21 of the socket, the height of which protrudes from the stone-destroying elements 5, 6 over the end face 21
  • a means 9 is used for axially displacing the socket 2 with respect to the housing 1, which is a slot connection , which is formed by grooves 23 on the outer side surface of the housing and by projections 24 which are formed on the inner surface of the walls of the socket 2.
  • Each section 25 of the end face of the housing 1, with which the shaft 8 of the associated stone-destroying element 6 interacts in the circumferential ring, is designed in a straight line and extends perpendicular to the longitudinal axis of the said stone-destroying element 6. Such a design of the end face of the housing 1 enables this Achieving the maximum efficiency in the transmission of the impact energy from the housing 1 to the stone-destroying elements 5 and 6 and via this to the rock.
  • Each section 25 has a length e which is greater than the length d of the section of the end face of the shaft 8 of the stone-destroying element 6.
  • the total area of the passage cross section of the said channels 26 is larger than the entire area of the passage cross section of the passage channels 14 provided in the socket 2 .
  • the existing overpressure prevents the tool from collapsing automatically when there is friction between the wall of the borehole 15 and the socket 2 when the installation and removal work is being carried out.
  • the rotary impact drilling tool according to the invention works as follows.
  • the socket 2 Before drilling begins, the socket 2 is pushed out of the housing to the greatest length under the effect of its own weight or the excess pressure of the flushing medium.
  • the stone-destroying elements 5 in the central ring which have no means 16 for fixing in the socket 2, are also pushed out of the latter to the full length of the wearing part.
  • the stone-destroying elements 5 When the tool is placed on the sole, the stone-destroying elements 5 are pushed into the socket 2 until the shafts 7 come into contact with the end face of the housing 1 and the socket with its support elements 22 is supported against the sole. In this position, all stone-destroying elements 5, 6 have a projection that corresponds to the height of the support elements 22 is the same.
  • An axial load, a torque and impact pulses are transmitted to the tool from the pneumatic or hydraulic hammer drill (not shown) arranged above the tool.
  • a means 16 for locating each stone-destroying element 6 of the circumferential ring with respect to the socket 2 which acts as a bushing 28 (Fig. 4) is made of resilient material.
  • the socket 28 surrounding the stone-destroying element 6 is accommodated in the socket 2 in an annular cavity 29 which is in communication with the space 13 between the socket 2 and the housing 1.
  • the operation of the tool using the bushings 28 is analogous to that described above.
  • the rotary impact drilling tool designed according to the invention enables this length to be increased and thus the stability to be increased by possible axial displacement of the socket with respect to the housing to the length of the wearable part of the stone-destroying elements.
  • the tool according to the invention enables drilling with automatic compensation of the wear of the stone-destroying elements due to the movable connection of the socket to the housing, which considerably increases the effectiveness of the work.
  • the tool of the invention can most conveniently be used to drill explosive, petroleum and geological exploration wells in heavily worn rock.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP19890906303 1988-05-23 1988-12-28 Drehschlagbohrwerkzeug Withdrawn EP0379584A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU4429566 1988-05-23
SU4429566 1988-05-23

Publications (1)

Publication Number Publication Date
EP0379584A1 true EP0379584A1 (de) 1990-08-01

Family

ID=21376771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890906303 Withdrawn EP0379584A1 (de) 1988-05-23 1988-12-28 Drehschlagbohrwerkzeug

Country Status (7)

Country Link
EP (1) EP0379584A1 (ja)
JP (1) JPH04500101A (ja)
CN (1) CN1040845A (ja)
AU (1) AU612270B2 (ja)
DD (1) DD287556A5 (ja)
FI (1) FI900349A0 (ja)
WO (1) WO1989011580A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9206657U1 (de) * 1992-05-15 1993-09-16 Toepfer Rainer Rotationswerkzeug mit Hartmetalleinsätzen
WO1995021317A2 (en) * 1994-02-04 1995-08-10 Db Stratabit S.A. Drilling bit assembly and apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101731C2 (de) * 2001-01-15 2003-09-18 Tracto Technik Bohrkopf und Bohrverfahren für ein Horizontalbohrgerät
CN103806838B (zh) * 2014-03-03 2016-03-09 陶德明 岩石层打桩钻头
CN105840106A (zh) * 2016-04-14 2016-08-10 西南石油大学 用于pdc钻头实现金刚石复合齿可拆装的固定方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU985240A1 (ru) * 1979-03-19 1982-12-30 Институт Горного Дела Со Ан Ссср Устройство дл разрушени горных пород
DE3049135A1 (de) * 1980-12-24 1982-07-15 Hawera Probst Gmbh + Co, 7980 Ravensburg Bohrer, insbesondere gesteinsbohrer
SU1314038A1 (ru) * 1985-06-13 1987-05-30 Всесоюзный научно-исследовательский институт транспортного строительства Буровой снар д
DE3544433C2 (de) * 1985-12-16 1995-12-14 Hilti Ag Gesteinsbohrer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8911580A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9206657U1 (de) * 1992-05-15 1993-09-16 Toepfer Rainer Rotationswerkzeug mit Hartmetalleinsätzen
WO1995021317A2 (en) * 1994-02-04 1995-08-10 Db Stratabit S.A. Drilling bit assembly and apparatus
WO1995021317A3 (en) * 1994-02-04 1995-09-21 Db Stratabit Sa Drilling bit assembly and apparatus

Also Published As

Publication number Publication date
DD287556A5 (de) 1991-02-28
AU612270B2 (en) 1991-07-04
JPH04500101A (ja) 1992-01-09
FI900349A0 (fi) 1990-01-23
AU3688089A (en) 1989-12-12
WO1989011580A1 (en) 1989-11-30
CN1040845A (zh) 1990-03-28

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