EP0336010A1 - Trépan de percussion muni d'une tête coupante ou perçante interchangeable à décharge de fluide axiale ou latérale - Google Patents

Trépan de percussion muni d'une tête coupante ou perçante interchangeable à décharge de fluide axiale ou latérale Download PDF

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Publication number
EP0336010A1
EP0336010A1 EP88118509A EP88118509A EP0336010A1 EP 0336010 A1 EP0336010 A1 EP 0336010A1 EP 88118509 A EP88118509 A EP 88118509A EP 88118509 A EP88118509 A EP 88118509A EP 0336010 A1 EP0336010 A1 EP 0336010A1
Authority
EP
European Patent Office
Prior art keywords
cutting head
downhole
discharging
sideways
percussion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88118509A
Other languages
German (de)
English (en)
Other versions
EP0336010B1 (fr
Inventor
Walter Boccalatte
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.)
BBW Srl
Original Assignee
BBW Srl
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 BBW Srl filed Critical BBW Srl
Priority to AT88118509T priority Critical patent/ATE76158T1/de
Publication of EP0336010A1 publication Critical patent/EP0336010A1/fr
Application granted granted Critical
Publication of EP0336010B1 publication Critical patent/EP0336010B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/12—Valve arrangements for boreholes or wells in wells operated by movement of casings or 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
    • 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
    • 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
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • 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
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • E21B17/076—Telescoping joints for varying drill string lengths; Shock absorbers between rod or pipe and drill bit
    • 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
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • 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
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • 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
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers

Definitions

  • This invention covers a percussion drill, equipped at its lower end with interchangeable downhole or sideways discharging cutting heads to drill and remove rubble and spoil after compressed air drilling.
  • the drills used for the drilling of wells are usually of two types, according to whether the head is drilling and discharging downhole or sideways.
  • the choice of the drill depends on the type of soil and a downhole discharging cutting head is mostly used for very hard, compact or rocky soils while sideways discharging is used in sandy or crumbly soil.
  • the downhole discharging drill is consisting of an extarnal tubular rotating jacket at the upper end of which pipe sections, transmitting the rotary movement to the drills, are progressively fitted as the drill penetrates into the soil, while supplying compressed air to the drill.
  • the percussion device with its up- and downward recipro­cating movement, is located inside this jacket, acting on the lower cutting head.
  • the percussion device has a central duct fed by a fixed central upper air distribution sleeve and is provided with a number of chambers and ducts located according to the position of the percussion device, the compressed air being either located below or above the percussion device, to lift or push it downward to ram the cutting head.
  • the discharged air is conveyed to the cutting head to facilitate lifting of the drilled spoil.
  • the cutting head too has a central axial duct, receiving discharged compressed air, as explained before; this air is discharged at the bottom through two raking branch lines.
  • the percussion drill with sideways discharging cutting head has a different configuration.
  • the rotary drill jacket has two hollow spaces, one to discharge the air, the air outlet being located in the upper compression chamber, and the other outlet at the bottom of the percussion device, at the center of the extreme stroke positions of the percussion device.
  • discharge is ensured when the percussion device is in its top or bottom position.
  • the other hollow space has a lower orifice through which the compressed air below the percussion device is let in so that it can push the per­cussion device upwards.
  • Proper valves usually of the mem­brane type, convey the air above and below the percussion device.
  • the percussion device has no axial internal channel, it does not adjust the air flow, but only the discharge at the two ends of the stroke.
  • the sideways discharging cutting head has no central axial duct and compressed air is only let out periphally.
  • This invention has the aim to use only one drill, and in particular a drill with downhole cutting head, even when sideways discharging cutting heads are required.
  • This objective is met through the fact that a sideways discharging cutting head has been devised interchangable with the downhole discharging cutting head, i.e. a sideways discharging cutting head provided with a central duct receiving the discharged air, as required for operation of the drill in question.
  • the metal rings supporting the downhole and sideways discharging cutting heads are also interchangeable and have the same external thread so that they can be mounted on the drill jacket.
  • the well known percussion drill with downhole discharging cutting head has an rotating external jacket 1 provided at its upper end with an element 2, connecting it to the rotary tubes through which compressed air flows, containing a shut-off valve to prevent the return of water from the water bearing stratum (not shown on the drawing) and the compressed air distribution sleeve 3.
  • This external jacket 1 is equipped at its lower end with a cutting head 4, supported by a threaded ring 5.
  • the cutting head 4 is internally provided with an axial duct 6, the upper end of which is connected to the pipe section 7 and it has at its lower end a bifurcation 8 in at least two raking directions.
  • the percussion device 9 is located in the center of the jacket 1, this percussion device being provided with an internal axial duct 10 in which the distributor sleeve 3 is fitted, while the pipe section 7 of the cutting head 4 may be fitted or not according to the position of the percussion device 9.
  • the central duct 10 of the percussion device 9 has two chambers 11 and 12 communicating with the upper and lower chambers 15, 15′, by means of the ducts 13 and peripheral grooves 14 around the percussion device.
  • the percussion drill as here described is operating like all known drills of this type with downhole discharging cutting head and this operation is described in detail in the Italian Patent n°12440 A/88 registered to the name of this patentee.
  • a cutting head 16 with a central duct 17 is fitted with an upper pipe section 18 which may enter the central duct 10 of the percussion device 9 and is provided at the lower end with at least one bi­furcation 19 leaving the cutting head sideways.
  • the locking ring 20 supporting the sideways discharging cutting head 16 is interchangeable with the locking ring 5 of the downhole discharging cutting head 4.
  • this ring has two recesses 21 discharging at their lower end through small run channels 22.
  • the compressed air when discharged flows through the central channel 17 of the cutting head 16, the bifurcation 19, thus reaching through the recesses 21 and the small channels 22, the peripheral space around the cutting head 16 provided with suitable recesses 23 through which the discharged air can reach the downhole drilling zone from which to remove the spoil.

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)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
EP88118509A 1988-03-29 1988-11-07 Trépan de percussion muni d'une tête coupante ou perçante interchangeable à décharge de fluide axiale ou latérale Expired - Lifetime EP0336010B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88118509T ATE76158T1 (de) 1988-03-29 1988-11-07 Schlagbohrer mit austauschbarem schneid- oder bohrkopf mit abwaerts oder seitwaerts gerichteten spuelungskanaelen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT12452/88A IT1220559B (it) 1988-03-29 1988-03-29 Perforatore a massa pattente con teste taglianti a scarico di fondo o a scarico laterale intercambiali
IT1245288 1988-03-29

Publications (2)

Publication Number Publication Date
EP0336010A1 true EP0336010A1 (fr) 1989-10-11
EP0336010B1 EP0336010B1 (fr) 1992-05-13

Family

ID=11140329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118509A Expired - Lifetime EP0336010B1 (fr) 1988-03-29 1988-11-07 Trépan de percussion muni d'une tête coupante ou perçante interchangeable à décharge de fluide axiale ou latérale

Country Status (4)

Country Link
EP (1) EP0336010B1 (fr)
AT (1) ATE76158T1 (fr)
DE (1) DE3871137D1 (fr)
IT (1) IT1220559B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6062322A (en) * 1998-06-15 2000-05-16 Sandvik Ab Precussive down-the-hole rock drilling hammer
US6131672A (en) * 2000-02-14 2000-10-17 Sandvik Ab Percussive down-the-hole rock drilling hammer and piston therefor
WO2002044511A1 (fr) * 2000-12-02 2002-06-06 Tracto-Technik Gmbh Appareil pneumatique de forage de roches et procede pour mettre en marche cet appareil
CN106285457A (zh) * 2016-11-01 2017-01-04 山东中瑞工程机械有限公司 潜孔冲击器的风量自动调节分配装置
CN107191593A (zh) * 2016-03-15 2017-09-22 中国石油化工股份有限公司 冲击器缸体及装配方法和其密封性能测试装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339649A (en) * 1965-01-19 1967-09-05 Atlas Copco Ab Rock drill bits
US4043409A (en) * 1975-03-22 1977-08-23 Walter Hans Philipp Drill steel for deep drill hammers
EP0005384A1 (fr) * 1978-04-24 1979-11-14 Stenuick Freres S.A. Marteau pneumatique fond-de-trou comportant un taillant
US4530408A (en) * 1983-03-28 1985-07-23 Toutant Roland J Porting system for pneumatic impact hammer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339649A (en) * 1965-01-19 1967-09-05 Atlas Copco Ab Rock drill bits
US4043409A (en) * 1975-03-22 1977-08-23 Walter Hans Philipp Drill steel for deep drill hammers
EP0005384A1 (fr) * 1978-04-24 1979-11-14 Stenuick Freres S.A. Marteau pneumatique fond-de-trou comportant un taillant
US4530408A (en) * 1983-03-28 1985-07-23 Toutant Roland J Porting system for pneumatic impact hammer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6062322A (en) * 1998-06-15 2000-05-16 Sandvik Ab Precussive down-the-hole rock drilling hammer
US6131672A (en) * 2000-02-14 2000-10-17 Sandvik Ab Percussive down-the-hole rock drilling hammer and piston therefor
WO2001059247A1 (fr) * 2000-02-14 2001-08-16 Sandvik Ab; (Publ) Marteau perforateur au rocher fond-de-trou et son piston
WO2002044511A1 (fr) * 2000-12-02 2002-06-06 Tracto-Technik Gmbh Appareil pneumatique de forage de roches et procede pour mettre en marche cet appareil
GB2389134A (en) * 2000-12-02 2003-12-03 Tracto Technik Pneumatic rock-boring device and method for starting such a device
GB2389134B (en) * 2000-12-02 2005-06-08 Tracto Technik Pneumatic rock-drilling apparatus
US7093671B2 (en) 2000-12-02 2006-08-22 Tracto-Technik Gmbh Pneumatic rock-boring device and method for starting such a device
CN107191593A (zh) * 2016-03-15 2017-09-22 中国石油化工股份有限公司 冲击器缸体及装配方法和其密封性能测试装置及方法
CN107191593B (zh) * 2016-03-15 2020-07-10 中国石油化工股份有限公司 冲击器缸体及装配方法和其密封性能测试装置及方法
CN106285457A (zh) * 2016-11-01 2017-01-04 山东中瑞工程机械有限公司 潜孔冲击器的风量自动调节分配装置

Also Published As

Publication number Publication date
EP0336010B1 (fr) 1992-05-13
IT8812452A0 (it) 1988-03-29
ATE76158T1 (de) 1992-05-15
IT1220559B (it) 1990-06-15
DE3871137D1 (de) 1992-06-17

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