EP0022865A4 - Hydraulically-driven downhole drill. - Google Patents

Hydraulically-driven downhole drill.

Info

Publication number
EP0022865A4
EP0022865A4 EP19790900104 EP79900104A EP0022865A4 EP 0022865 A4 EP0022865 A4 EP 0022865A4 EP 19790900104 EP19790900104 EP 19790900104 EP 79900104 A EP79900104 A EP 79900104A EP 0022865 A4 EP0022865 A4 EP 0022865A4
Authority
EP
European Patent Office
Prior art keywords
hydraulic circuit
drill
drill head
head
hydraulically
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
EP19790900104
Other languages
German (de)
French (fr)
Other versions
EP0022865A1 (en
EP0022865B1 (en
Inventor
Yoshikazu Mikami
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.)
Furukawa Kogyo Co Ltd
Original Assignee
Furukawa Kogyo Co 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
Priority claimed from PCT/JP1978/000057 external-priority patent/WO1980001300A1/en
Application filed by Furukawa Kogyo Co Ltd filed Critical Furukawa Kogyo Co Ltd
Priority to EP19790900104 priority Critical patent/EP0022865B1/en
Publication of EP0022865A1 publication Critical patent/EP0022865A1/en
Publication of EP0022865A4 publication Critical patent/EP0022865A4/en
Application granted granted Critical
Publication of EP0022865B1 publication Critical patent/EP0022865B1/en
Expired legal-status Critical Current

Links

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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated 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
    • 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
    • E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems

Landscapes

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

Abstract

A hydraulically driven downhole drill is provided with a drill connector (51) for simplifying both hydraulic circuits of a drill head (1) and a connecting rod (60) and adapting the hydraulic circuit arrangement of the drill head (1) with the other hydraulic circuit arrangement of the connecting rod (60). Use of this drill connector results in simplification of the circuit arrangement at the connecting portion between the drill head and connecting head. This downhole drill is further provided with an automatically-operated hydraulic pressure shut-off valve (65) at a connecting portion between the connecting rods (60) to prevent oil from leaking upon engagement and disengagement of the rods (60). The drill head (1) has a mechanism for reciprocating hydraulically a piston (8) controlled by a control valve (20) in the cylinder, and the piston (8) has a hydraulic circuit (50) for removing chips. The connecting rods (60) each have therein a high pressure hydraulic circuit (30) formed along the central axis, a low pressure hydraulic circuit (40) formed coaxially with the hydraulic circuit (30) around the outer periphery thereof, and pipes (61, 61a, 61b) including the hydraulic circuit (50) for removing chips. A pressure compensator can be mounted at the connecting portion of the drill head with the connecting rod and at the connecting portions of the connecting rods with each other.
EP19790900104 1978-12-15 1980-07-01 Hydraulically-driven downhole drill Expired EP0022865B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19790900104 EP0022865B1 (en) 1978-12-15 1980-07-01 Hydraulically-driven downhole drill

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/JP1978/000057 WO1980001300A1 (en) 1978-12-15 1978-12-15 Hydraulically-driven downhole drill
EP19790900104 EP0022865B1 (en) 1978-12-15 1980-07-01 Hydraulically-driven downhole drill

Publications (3)

Publication Number Publication Date
EP0022865A1 EP0022865A1 (en) 1981-01-28
EP0022865A4 true EP0022865A4 (en) 1981-01-28
EP0022865B1 EP0022865B1 (en) 1984-08-01

Family

ID=26078576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790900104 Expired EP0022865B1 (en) 1978-12-15 1980-07-01 Hydraulically-driven downhole drill

Country Status (1)

Country Link
EP (1) EP0022865B1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3015696A1 (en) * 1980-04-24 1981-10-29 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter HYRAULIC DRIVING DEVICE FOR A DRIVING TOOL
FR2523202A1 (en) * 1982-03-11 1983-09-16 Stenuick Freres HAMMER WITH PNEUMATIC DRIVE OF THE TYPE "FOND-DE-TROU"
SE444127B (en) * 1984-06-25 1986-03-24 Atlas Copco Ab PRESSURE WASHING DRIVE SINGLE DRILLING MACHINE
US4711310A (en) * 1985-01-04 1987-12-08 Luen Lam M Rotary head
DE3807321C1 (en) * 1988-03-05 1989-05-11 Salzgitter Maschinenbau Gmbh, 3320 Salzgitter, De
DE4027414C1 (en) * 1990-08-30 1992-02-13 Komotzki, Michael, 4708 Kamen, De Tubular rock bore drill stem - has concentric channels for fluids and has spring-loaded control valves
AU685570B2 (en) * 1994-12-23 1998-01-22 Atlas Copco Secoroc Aktiebolag Drilling apparatus
AT407184B (en) * 1996-05-20 2001-01-25 Boehler Pneumatik Internat Gmb HYDRAULIC DEEP HOLE DRILL
JP3818438B2 (en) * 2001-12-14 2006-09-06 独立行政法人産業技術総合研究所 Downhole driven percussion drill
SE1050155A1 (en) * 2010-02-18 2011-08-19 Wassara Ab Method and apparatus for sampling bedrock
GB2518383A (en) 2013-09-19 2015-03-25 Mincon Internat Ltd Drill rod for percussion drill tool
CN107152252B (en) * 2017-07-05 2023-03-24 唐山博皓工程技术有限公司 Novel water tap of drilling machine
CN110306932B (en) * 2019-06-17 2024-05-28 中国石油天然气集团有限公司 Local compaction pressurizing compression mechanism for rock debris
CN113445903B (en) * 2021-08-11 2023-09-19 中煤科工集团重庆研究院有限公司 Self-closing double-oil-duct drill rod connecting structure
CN113445902B (en) * 2021-08-11 2023-09-19 中煤科工集团重庆研究院有限公司 Self-closing multichannel high-pressure drill rod

Also Published As

Publication number Publication date
EP0022865A1 (en) 1981-01-28
EP0022865B1 (en) 1984-08-01

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