EP0058061A3 - Tools for underground formations - Google Patents

Tools for underground formations Download PDF

Info

Publication number
EP0058061A3
EP0058061A3 EP82300578A EP82300578A EP0058061A3 EP 0058061 A3 EP0058061 A3 EP 0058061A3 EP 82300578 A EP82300578 A EP 82300578A EP 82300578 A EP82300578 A EP 82300578A EP 0058061 A3 EP0058061 A3 EP 0058061A3
Authority
EP
European Patent Office
Prior art keywords
tools
underground formations
tool
face
elements
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Withdrawn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
EP82300578A
Other languages
German (de)
French (fr)
Other versions
EP0058061A2 (en
Inventor
John Michael Fuller
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.)
Drilling and Service UK Ltd
Original Assignee
Drilling and Service UK 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 Drilling and Service UK Ltd filed Critical Drilling and Service UK Ltd
Publication of EP0058061A2 publication Critical patent/EP0058061A2/en
Publication of EP0058061A3 publication Critical patent/EP0058061A3/en
Withdrawn legal-status Critical Current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
    • E21B10/00—Drill bits
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
    • 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
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1092—Gauge section of drill bits

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 tool for an underground formation e.g. an eccentric hole opener, has an eccentric portion the end face of which has cutting elements, preferably poly-crystalline diamond compacts. According to the invention the elements are distributed about the end face in an arrangement to reduce the imbalance in horizontal cutting forces caused by the eccentricity of the tool.
EP82300578A 1981-02-07 1982-02-05 Tools for underground formations Withdrawn EP0058061A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8103820 1981-02-07
GB8103820 1981-02-07
GB8104537 1981-02-13
GB8104537 1981-02-13

Publications (2)

Publication Number Publication Date
EP0058061A2 EP0058061A2 (en) 1982-08-18
EP0058061A3 true EP0058061A3 (en) 1982-09-01

Family

ID=26278364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82300578A Withdrawn EP0058061A3 (en) 1981-02-07 1982-02-05 Tools for underground formations

Country Status (2)

Country Link
EP (1) EP0058061A3 (en)
NO (1) NO820347L (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3414206C1 (en) * 1984-04-14 1985-02-21 Norton Christensen, Inc., Salt Lake City, Utah Rotary drill bit for deep drilling
US4717290A (en) * 1986-12-17 1988-01-05 Homco International, Inc. Milling tool
FR2678678A1 (en) * 1991-07-04 1993-01-08 Smf Int DEVICE FOR ADJUSTING THE AZIMUT OF THE TRAJECTORY OF A DRILLING TOOL IN ROTARY MODE.
GB9422022D0 (en) * 1994-10-31 1994-12-21 Red Baron Oil Tools Rental Two stage underreamer
US5992548A (en) * 1995-08-15 1999-11-30 Diamond Products International, Inc. Bi-center bit with oppositely disposed cutting surfaces
US5904213A (en) * 1995-10-10 1999-05-18 Camco International (Uk) Limited Rotary drill bits
US5765653A (en) * 1996-10-09 1998-06-16 Baker Hughes Incorporated Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter
EP1039095B1 (en) * 1999-03-19 2005-05-18 Diamond Products International, Inc. Downhole drill bit
US6269893B1 (en) 1999-06-30 2001-08-07 Smith International, Inc. Bi-centered drill bit having improved drilling stability mud hydraulics and resistance to cutter damage
US6386302B1 (en) 1999-09-09 2002-05-14 Smith International, Inc. Polycrystaline diamond compact insert reaming tool
US6394200B1 (en) 1999-10-28 2002-05-28 Camco International (U.K.) Limited Drillout bi-center bit
US6622803B2 (en) 2000-03-22 2003-09-23 Rotary Drilling Technology, Llc Stabilizer for use in a drill string
US6926099B2 (en) 2003-03-26 2005-08-09 Varel International, L.P. Drill out bi-center bit and method for using same
GB0820063D0 (en) 2008-11-03 2008-12-10 Reedhycalog Uk Ltd Drilling tool
CN106285512B (en) * 2016-10-10 2018-10-30 贵州高峰石油机械股份有限公司 A kind of bias centralizer and its application method
CN114151017A (en) * 2021-11-23 2022-03-08 中海石油(中国)有限公司 Bionic eccentric polycrystalline diamond compact

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE513754A (en) *
DE115257C (en) *
US2074951A (en) * 1935-12-14 1937-03-23 John A Zublin Bit for drilling a hole larger than the bit
FR1307849A (en) * 1961-12-12 1962-10-26 Atlantic Refining Co Method and apparatus for drilling boreholes
US3237705A (en) * 1963-11-13 1966-03-01 Williams Joseph W Reamer for enlarging and straightening bore holes
US3851719A (en) * 1973-03-22 1974-12-03 American Coldset Corp Stabilized under-drilling apparatus
US3871488A (en) * 1974-02-13 1975-03-18 Daniel R Sabre Rock drilling
US4098363A (en) * 1977-04-25 1978-07-04 Christensen, Inc. Diamond drilling bit for soft and medium hard formations

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE513754A (en) *
DE115257C (en) *
US2074951A (en) * 1935-12-14 1937-03-23 John A Zublin Bit for drilling a hole larger than the bit
FR1307849A (en) * 1961-12-12 1962-10-26 Atlantic Refining Co Method and apparatus for drilling boreholes
US3237705A (en) * 1963-11-13 1966-03-01 Williams Joseph W Reamer for enlarging and straightening bore holes
US3851719A (en) * 1973-03-22 1974-12-03 American Coldset Corp Stabilized under-drilling apparatus
US3871488A (en) * 1974-02-13 1975-03-18 Daniel R Sabre Rock drilling
US4098363A (en) * 1977-04-25 1978-07-04 Christensen, Inc. Diamond drilling bit for soft and medium hard formations

Also Published As

Publication number Publication date
NO820347L (en) 1982-08-09
EP0058061A2 (en) 1982-08-18

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE CH DE FR GB LI NL

AK Designated contracting states

Designated state(s): BE CH DE FR GB LI NL

17P Request for examination filed

Effective date: 19830214

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DRILLING & SERVICE U.K. LIMITED

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840727

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FULLER, JOHN MICHAEL