US3835943A - Drilling apparatus and adaptor assembly for such apparatus - Google Patents

Drilling apparatus and adaptor assembly for such apparatus Download PDF

Info

Publication number
US3835943A
US3835943A US00334609A US33460973A US3835943A US 3835943 A US3835943 A US 3835943A US 00334609 A US00334609 A US 00334609A US 33460973 A US33460973 A US 33460973A US 3835943 A US3835943 A US 3835943A
Authority
US
United States
Prior art keywords
adaptor
drill string
drill bit
outer drill
drilling
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.)
Expired - Lifetime
Application number
US00334609A
Other languages
English (en)
Inventor
R Bray
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3835943A publication Critical patent/US3835943A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • 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
    • E21B17/18—Pipes provided with plural fluid passages
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/02—Swivel joints in hose-lines
    • 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
    • E21B7/002—Drilling with diversely driven shafts extending into the borehole
    • 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 two adaptors When, as described above, it is desired to advance the inner drill string only, the two adaptors must be uncoupled and the shank adaptor lifted to permit further rods to be added to the rod assembly. In order to uncouple the adaptors it is necessary to perform an unscrewing operation, and this is time consuming. Also, since the flushing head is secured directly to the rotatively and percussively driven shank adaptor, the bearing arrangement of the flushing head is subject'to a high degree of wear. Further disadvantages of the arrangement are that the shank adaptor is relatively expensive to produce because of the need to provide it with three channels instead of the customary single central channel, and the provision of channels near the outer portion of the shank adaptor may tend to weaken the same.
  • a preferred embodiment of the present invention may overcome or reduce all or some ofithe above mentioned disadvantages.
  • an adaptor assembly for drilling apparatus comprising a first adaptor which isto be connected to an inner drill string and a second adaptor which is to be connected to an outer drill string, the adaptors being constructed so that the second adaptor can receive the first adaptor in a bore in the second adaptor in such a way that the adaptors are coupled for simultaneous rotation but are axially slidable relative to one another.
  • the bearing arrangement of a flushing head secured around the apertured region of the second adaptor may not be subjected to the same degree of wear as in the case of the above described prior art.
  • FIG. 1 is a vertical sectional view through the upper portion of drilling apparatus having inner and outer drill strings, the view showing one embodiment of a combination of shank adaptor and casing adaptor according to the invention, a flushing head being secured in position around the casing whereby a flushing medium may be forced from the flushing head through apertures in the casing adaptor and down between inner and outer drill strings,
  • FIG. 2 is a horizontal view from above, mainly in section, taken on the line 22 of FIG. 1, the view showing a seal substituted for the flushing head illustrated in FIG. 1,
  • FIG. 3 is a diagrammatic vertical sectional view on a reduced scale showing both inner and outer drill strings secured to the adaptors of FIG. 1, the view illustrating one manner in which the apparatus may be utilized,
  • FIG. 4 is a view similar to FIG. 3, and showing a second manner in which apparatus according to the invention may be utilized, and
  • FIG. 5 is a view similar to FIGS. 3 and 4 and showing a third manner in which drilling apparatus according to the invention may be utilized.
  • FIG. 1 shows a shank adaptor 1 which is to be driven rotatively and percussively by a power source which is not illustrated.
  • the shank adaptor 1 is a sliding fit within the upper portion of a sleeve-like casing adaptor 2, and a seal is provided between the adaptors by means of a pair of ring-like seals 3 received in corresponding peripheral grooves in the shank adaptor.
  • the shank adaptor 1 and the corresponding bore in the casing adaptor in which the shank adaptor fits are of the same cross-section, being mainly circular but havine one or more flat surfaces so that the adaptors are not rotatable relative to one another and the shank adaptor may thus drive the casing adaptor in rotation.
  • the shank adaptor 1 has a central bore 4 for the passage of a flushing medium, usually air, down through the inner drill string 5 (see FIGS. 3 to 5) the bore having an enlarged diameter lower portion which is screw threaded to receive the upper hollow rod of the inner drill string.
  • the lower portion 2a of the casing adaptor is internally screw threaded to receive the uppermost casing section of the outer drill string 14, and the central region of the casing adaptor is provided with a pair of diametrically opposed flushing apertures 6 whereby a flushing medium, usually water, may be supplied through the apertures 6 and down between the inner and outer drill strings as illustrated in FIG. 4.
  • a detachable sleevelike flushing head 7 Surrounding the central region of the casing adaptor 2, in the views of FIGS. 1 and 4, is a detachable sleevelike flushing head 7 which is rotatably journalled on upper and lower bearing rings 8 and 9, the weight of the flushing head being carried on the lower bearing 9 which rests on a peripheral shoulder 10 of the casing adaptor.
  • the flushing head 7 may thus be lifted from the casing adaptor when not required without the need to unscrew any couplings.
  • a conventional arrangement of scrapers and seals is provided between the flushing head and casing adaptor both above and below the flushing apertures 6, whereby to prevent leakage of water from an annular chamber 11 of the flushing head which surrounds the apertured region of the casing adaptor. Flushing water is supplied to the chamber 11 by way of an inlet 12 of the flushing head 7.
  • FIG. 4 illustrates the manner in which drilling is conducted when the detachable flushing head is in use as shown in FIG. 1.
  • the shank adaptor l is driven rotatively and percussively, and thus a drill bit 13 of the inner string is also driven rotatively and percussively.
  • Rotation is transmitted to the outer string 14 and thus to a drill bit 15 of such outer string by means of the cooperating adaptors as described above and percussion is transmitted to the bit 15 by means of co-operating frusto-conical shoulders generally indicated at 16 on the two bits.
  • Flushing water supplibd to the chamber 11 through the inlet 12 passes in the direction of the dotted arrows around the annular chamber 11, through the apertures 6, down between the inner and outer strings, and out into the material, for example earth, which is being drilled. It will be appreciated that the seals 3 between the two adaptors prevent water from escaping from the space between the adaptors.
  • the unbroken arrows in FIG. 4 illustrates the path of flushing air down the inner string and out into the material being drilled in conventional manner.
  • FIG. 3 illustrates a mode of drilling in which the flushing head 7 has been removed.
  • the flushing head 7 may be removed simply by sliding the same upwardly to remove it from its location around the casing adaptor, and thereafter the head may be removed from its position around the shank adaptor either by temporarily uncoupling such adaptor from the power source or by lifting the shank adaptor and temporarily uncoupling the adaptor from the uppermost rod of the inner string.
  • flushing head With the flushing head removed, flushing air passes down the inner string and upwardly between the inner and outer strings to emerge through the apertures 6 as indicated by the arrows shown in unbroken lines.
  • the seals 3 are not essential to the working of the apparatus.
  • FIG. 2 illustrates a seal 17 substituted for the flushing head.
  • the seal is in the form of a sleeve split longitudinally from top to bottom to provide a gap 18.
  • suitable lugs 19 and 20 are secured to the sleeve, and these two lugs may be pulled together or allowed to move apart upon rotation of a suitable bolt 21.
  • the seal is provided with apertures 22 which in FIG. 2 are shown out of registry with the apertures 6 in the casing adaptor whereby such apertures 6 are sealed.
  • the bolt 21 may be slackened to allow the seal to be rotated to a position in which the apertures 22 are in registry with the apertures 6 of the casing adaptor, and in these circumstances drilling proceeds exactly as shown in FIG. 3 since the seal has no effect.
  • the seal therefore is of particular use when it is desired to alternate between the type of flushing illustrated in FIG. 3, and the type of flushing in which the apertures 6 are closed and air passes directly from inner string into the material being drilled.
  • FIG. 5 shows drilling in progress with the casing adaptor 2 removed. However, it is not necessary to remove the casing adaptor 2 sine it does not impede to any great extent the operation of the drilling apparatus in the manner illustrated in FIG. 5.
  • the shank adaptor 1 may merely be lifted from within the casing adaptor without the need to unscrew any couplings.
  • the flushing head is to some extent protected from percussive vibration because vibration is transmitted to the flushing head via the relatively long path of the complete length of inner and outer strings.
  • the shank adaptor need not be provided with axial channels for the passage of water and such shank adaptor is thus relatively cheap to produce and comparatively strong.
  • the upper portion of the casing adaptor may be provided with four apertures arranged in two pairs, each pair serving to receive one prong of a two prong fork-member (not shown) which may be passed through the apertures. Two apertures, one from each pair, are shown at 24 in FIG. 1.
  • the spacing between the pairs of apertures and thus the spacing between the two fork prongs will be slightly greater than the diameter of the upper portion la of the shank adaptor (see FIG. 11) so that the fork may be slid into position above a frusto-conical shoulder lb of the shank adaptor and with its prongs positioned one on either side of the upper portion la of the shank adaptor.
  • An adaptor assembly for use with drilling apparatus, the drilling apparatus including an outer drill string with an outer drill bit fixed at the drilling end thereof, an inner drill string disposed within said outer drill string and having an inner drill bit fixed at the drilling end thereof, and surface means for transmitting percussive forces from said inner drill bit to said outer drill bit, said adaptor assembly comprising:
  • a first adaptor having means for connecting one end thereof with said inner drill string and means for connecting another end thereof with rotary and percussive drive mechanism
  • a second adaptor having means for connecting one end thereof with said outer drill string and means at the other end thereof for slidably receiving and locating said first adaptor in rotary driving engagement exclusive of percussive drive engagement, such that percussive drive may be transmitted from the first adaptor to the outer drill bit by way of said surface means, independently of the second adaptor.
  • an adaptor assembly according to claim 1 wherein the means of said second adaptor for receiving said first adaptor comprises a bore; said bore and said first adaptor having non-circular cross-sections, with said first adaptor being receivable in the bore with a close sliding fit.
  • Drilling apparatus comprising:
  • a second adaptor connected to a connecting end of said outer drill string; said second adaptor including means for slidably receiving and locating said first adaptor to couple said first and second adaptors for rotary drive exclusive of percussive drive; and force transmitting surface means located remotely from said second adaptor for transmitting percussive energy from said first adaptor to said outer drill bit.

Landscapes

  • 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)
US00334609A 1972-02-25 1973-02-22 Drilling apparatus and adaptor assembly for such apparatus Expired - Lifetime US3835943A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB884672A GB1399881A (en) 1972-02-25 1972-02-25 Earth drilling apparatus

Publications (1)

Publication Number Publication Date
US3835943A true US3835943A (en) 1974-09-17

Family

ID=9860354

Family Applications (1)

Application Number Title Priority Date Filing Date
US00334609A Expired - Lifetime US3835943A (en) 1972-02-25 1973-02-22 Drilling apparatus and adaptor assembly for such apparatus

Country Status (9)

Country Link
US (1) US3835943A (de)
AU (1) AU5247073A (de)
BE (1) BE795817A (de)
CA (1) CA960643A (de)
DE (1) DE2309570A1 (de)
ES (1) ES411915A1 (de)
FR (1) FR2173202B3 (de)
GB (1) GB1399881A (de)
NL (1) NL7302507A (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945444A (en) * 1975-04-01 1976-03-23 The Anaconda Company Split bit casing drill
US4296821A (en) * 1980-02-07 1981-10-27 Leslie Larson Drilling rig and conversion apparatus
US4387776A (en) * 1980-11-24 1983-06-14 Adcock Gerald L Well case driving anvil
US4503918A (en) * 1982-06-22 1985-03-12 Institut Cerac S.A. Rock drilling apparatus
US4852668A (en) * 1986-04-18 1989-08-01 Ben Wade Oakes Dickinson, III Hydraulic drilling apparatus and method
EP0543140A2 (de) * 1991-11-21 1993-05-26 Gu Tiefbau Ag Bohrvorrichtung für den Tiefbau sowie Verfahren zum Herstellen von stabilisierenden Säulen oder ähnlichen Gebilden in Erdreich
US5503224A (en) * 1994-06-28 1996-04-02 Big Iron Drilling Ltd. Casing drive apparatus
WO1996018798A1 (en) * 1994-12-13 1996-06-20 Ilomaeki Valto A drilling method and bit assembly to realize the method
US5586609A (en) * 1994-12-15 1996-12-24 Telejet Technologies, Inc. Method and apparatus for drilling with high-pressure, reduced solid content liquid
EP1127477A1 (de) * 1998-11-04 2001-08-29 Numa Tool Company Verfahren un vorrichtung mit tieflochbohrung
US20030221870A1 (en) * 2002-06-01 2003-12-04 Johnson Howard E. Earth loop heat exchange methods and systems
US6761231B1 (en) * 2002-05-06 2004-07-13 The Charles Machines Works, Inc. Rotary driven drilling hammer
US20040256123A1 (en) * 2003-06-12 2004-12-23 Lea Gordon E. Planting tool
US20050025355A1 (en) * 2003-07-31 2005-02-03 Simard Patrice Y. Elastic distortions for automatic generation of labeled data
US6955219B2 (en) 2003-07-03 2005-10-18 Enlink Geoenergy Services, Inc. Earth loop installation with sonic drilling
US20080011516A1 (en) * 2004-12-07 2008-01-17 Juha Piipponen Method for Casing Drilling, Drilling Unit and Adapter Device
WO2011153584A1 (en) * 2010-06-08 2011-12-15 Strange Investments (Wa) Pty Ltd Casing spinner
US20120138368A1 (en) * 2010-12-03 2012-06-07 Markus Hartung Bottom preventer for use in a drilling system
EP2772606A1 (de) * 2013-02-27 2014-09-03 Eurodrill GmbH Antriebsvorrichtung und Verfahren zum Betrieb einer Antriebsvorrichtung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI66051C (fi) * 1974-02-18 1984-08-10 Bpa Byggproduktion Ab Anordning vid borrutrustningar
DE2902736C2 (de) * 1979-01-25 1982-02-18 Hydroc Gesteinsbohrtechnik GmbH, 5960 Olpe Bohrvorrichtung
DE3106192A1 (de) * 1981-02-19 1982-08-26 Reinhold 8000 München Rauscher Zusatzwerkzeug fuer drehschlagbohrmaschinen
DE3543732A1 (de) * 1985-12-11 1987-06-19 Reimann Alma Verfahren zum bohren eines gruendungsbohrloches fuer ein etwa lotrecht aufzustellendes bauelement
FR2702241B1 (fr) * 1993-03-03 1995-06-02 Gerard Sabatier Tige de forage à double corps destinée à être mise en Óoeuvre dans les modes de forage dits "à circulation inverse".

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US984825A (en) * 1910-05-28 1911-02-21 New York Engineering Company Drill.
US1203860A (en) * 1913-03-20 1916-11-07 Harris T Dunbar Drilling-machine.
US2804293A (en) * 1956-10-22 1957-08-27 Exxon Research Engineering Co Apparatus for completing and operating sulfur wells
US3000453A (en) * 1958-12-15 1961-09-19 Germain William A St Earth bit driver
US3005504A (en) * 1959-05-11 1961-10-24 Gardner Denver Co Drilling device
US3227230A (en) * 1961-02-21 1966-01-04 Atlas Copco Ab Combination ring and central drill bit drilling equipment
US3407888A (en) * 1966-04-04 1968-10-29 Graipin Raymond Device and method for the rapid execution of boreholes in all types of ground
US3682260A (en) * 1969-05-30 1972-08-08 Gunter Klemm Rotary percussive drill and method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US984825A (en) * 1910-05-28 1911-02-21 New York Engineering Company Drill.
US1203860A (en) * 1913-03-20 1916-11-07 Harris T Dunbar Drilling-machine.
US2804293A (en) * 1956-10-22 1957-08-27 Exxon Research Engineering Co Apparatus for completing and operating sulfur wells
US3000453A (en) * 1958-12-15 1961-09-19 Germain William A St Earth bit driver
US3005504A (en) * 1959-05-11 1961-10-24 Gardner Denver Co Drilling device
US3227230A (en) * 1961-02-21 1966-01-04 Atlas Copco Ab Combination ring and central drill bit drilling equipment
US3407888A (en) * 1966-04-04 1968-10-29 Graipin Raymond Device and method for the rapid execution of boreholes in all types of ground
US3682260A (en) * 1969-05-30 1972-08-08 Gunter Klemm Rotary percussive drill and method

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945444A (en) * 1975-04-01 1976-03-23 The Anaconda Company Split bit casing drill
US4296821A (en) * 1980-02-07 1981-10-27 Leslie Larson Drilling rig and conversion apparatus
US4387776A (en) * 1980-11-24 1983-06-14 Adcock Gerald L Well case driving anvil
US4503918A (en) * 1982-06-22 1985-03-12 Institut Cerac S.A. Rock drilling apparatus
US4852668A (en) * 1986-04-18 1989-08-01 Ben Wade Oakes Dickinson, III Hydraulic drilling apparatus and method
EP0543140A3 (en) * 1991-11-21 1993-08-11 Gu Tiefbau Ag Drilling device for civil engineering and method for making stabilizing columns or similar structures in the ground
EP0543140A2 (de) * 1991-11-21 1993-05-26 Gu Tiefbau Ag Bohrvorrichtung für den Tiefbau sowie Verfahren zum Herstellen von stabilisierenden Säulen oder ähnlichen Gebilden in Erdreich
US5503224A (en) * 1994-06-28 1996-04-02 Big Iron Drilling Ltd. Casing drive apparatus
WO1996018798A1 (en) * 1994-12-13 1996-06-20 Ilomaeki Valto A drilling method and bit assembly to realize the method
US5957224A (en) * 1994-12-13 1999-09-28 Ilomaeki; Valto Double bit assembly and method of using the same
AU713271B2 (en) * 1994-12-13 1999-11-25 Valto Ilomaki A double bit assembly and method of using the same
CN1062635C (zh) * 1994-12-13 2001-02-28 沃尔托·伊罗马克 在土中钻孔的方法、钻头组件和内钻头
US5586609A (en) * 1994-12-15 1996-12-24 Telejet Technologies, Inc. Method and apparatus for drilling with high-pressure, reduced solid content liquid
EP1127477A1 (de) * 1998-11-04 2001-08-29 Numa Tool Company Verfahren un vorrichtung mit tieflochbohrung
EP1127477A4 (de) * 1998-11-04 2002-10-09 Numa Tool Co Verfahren un vorrichtung mit tieflochbohrung
US6761231B1 (en) * 2002-05-06 2004-07-13 The Charles Machines Works, Inc. Rotary driven drilling hammer
US20030221870A1 (en) * 2002-06-01 2003-12-04 Johnson Howard E. Earth loop heat exchange methods and systems
US7128166B2 (en) * 2003-06-12 2006-10-31 Lea Gordon E Planting tool
US20040256123A1 (en) * 2003-06-12 2004-12-23 Lea Gordon E. Planting tool
US20070199723A1 (en) * 2003-06-12 2007-08-30 Lea Gordon E Planting tool
US7270182B2 (en) * 2003-07-03 2007-09-18 Enlink Geoenergy Services, Inc. Earth loop installed with sonic apparatus
US20060060353A1 (en) * 2003-07-03 2006-03-23 Johnson Howard E Jr Earth loop installed with sonic apparatus
US6955219B2 (en) 2003-07-03 2005-10-18 Enlink Geoenergy Services, Inc. Earth loop installation with sonic drilling
US7093657B2 (en) 2003-07-03 2006-08-22 Enlink Geoenergy Services, Inc. Earth loop installed with sonic apparatus
US7418128B2 (en) 2003-07-31 2008-08-26 Microsoft Corporation Elastic distortions for automatic generation of labeled data
US20050025355A1 (en) * 2003-07-31 2005-02-03 Simard Patrice Y. Elastic distortions for automatic generation of labeled data
US7617887B2 (en) * 2004-12-07 2009-11-17 Sandvik Mining And Construction Oy Method for casing drilling, drilling unit and adapter device
US20080011516A1 (en) * 2004-12-07 2008-01-17 Juha Piipponen Method for Casing Drilling, Drilling Unit and Adapter Device
WO2011153584A1 (en) * 2010-06-08 2011-12-15 Strange Investments (Wa) Pty Ltd Casing spinner
US20120138368A1 (en) * 2010-12-03 2012-06-07 Markus Hartung Bottom preventer for use in a drilling system
US8556004B2 (en) * 2010-12-03 2013-10-15 Longyear Tm, Inc. Bottom preventer for use in a drilling system
EP2646644A4 (de) * 2010-12-03 2018-04-18 Longyear TM, Inc. Bodentrenner zur verwendung in einem bohrsystem
EP2772606A1 (de) * 2013-02-27 2014-09-03 Eurodrill GmbH Antriebsvorrichtung und Verfahren zum Betrieb einer Antriebsvorrichtung
US9932773B2 (en) 2013-02-27 2018-04-03 Eurodrill Gmbh Drive device and method for operating a drive device

Also Published As

Publication number Publication date
FR2173202B3 (de) 1976-02-13
ES411915A1 (es) 1976-05-01
FR2173202A1 (de) 1973-10-05
NL7302507A (de) 1973-08-28
AU5247073A (en) 1974-08-22
BE795817A (fr) 1973-06-18
GB1399881A (en) 1975-07-02
CA960643A (en) 1975-01-07
DE2309570A1 (de) 1973-08-30

Similar Documents

Publication Publication Date Title
US3835943A (en) Drilling apparatus and adaptor assembly for such apparatus
US3682260A (en) Rotary percussive drill and method
US3227230A (en) Combination ring and central drill bit drilling equipment
US3088532A (en) Bit loading device
AU2014378622B2 (en) Quick release down-the-hole hammer drill bit assembly
CN102678050A (zh) 一种具有冲击切削结构的牙轮复合钻头
US3703212A (en) Method of rock drilling and apparatus for use therein
US5125464A (en) Drilling device for the study and exploitation of the subsoil
US3231032A (en) Apparatus for drilling in earth covered rock
US5307886A (en) Method for casing a hole drilled in a formation
US6371209B1 (en) Casing installation and removal apparatus and method
US4163478A (en) Self aligning impact rock drilling tool
US4658901A (en) Method of and apparatus for removing stuck well pipe
US3990524A (en) Down-the-hole motor for rotary drill rod and process for drilling using the same
US3277972A (en) Rock drilling equipment
US3854539A (en) Drilling apparatus with down hole motor
US4274497A (en) Skirted hammer sub for dual tube drilling
CN213573880U (zh) 一种大直径桩孔成型设备
CN208803815U (zh) 旋挖钻孔漂石破碎装置
CN103015931A (zh) 随钻取心的取心***
US2575826A (en) Drilling tool
KR101885890B1 (ko) 지하수 관정공사용 헤드파이프의 드릴헤드 분리장치
US1778252A (en) Rotary jar
CN110700780A (zh) 一种岩心取样钻机用液压动力头及岩心取样钻机
ATE236341T1 (de) Kupplungsst)ck zum dreh-/schlagbohren in erde und/oder gestein mit einem oberen dreh- /schlagborger(t und einem unteren schlagbohrgerät