FR2648862B1 - EXCENTER ROTARY MONOBLOCK BIT - Google Patents

EXCENTER ROTARY MONOBLOCK BIT

Info

Publication number
FR2648862B1
FR2648862B1 FR8908738A FR8908738A FR2648862B1 FR 2648862 B1 FR2648862 B1 FR 2648862B1 FR 8908738 A FR8908738 A FR 8908738A FR 8908738 A FR8908738 A FR 8908738A FR 2648862 B1 FR2648862 B1 FR 2648862B1
Authority
FR
France
Prior art keywords
excenter
monoblock
bit
rotary
rotary monoblock
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
FR8908738A
Other languages
French (fr)
Other versions
FR2648862A1 (en
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
Priority to FR8908738A priority Critical patent/FR2648862B1/en
Publication of FR2648862A1 publication Critical patent/FR2648862A1/en
Application granted granted Critical
Publication of FR2648862B1 publication Critical patent/FR2648862B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
FR8908738A 1989-06-22 1989-06-22 EXCENTER ROTARY MONOBLOCK BIT Expired - Lifetime FR2648862B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8908738A FR2648862B1 (en) 1989-06-22 1989-06-22 EXCENTER ROTARY MONOBLOCK BIT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8908738A FR2648862B1 (en) 1989-06-22 1989-06-22 EXCENTER ROTARY MONOBLOCK BIT

Publications (2)

Publication Number Publication Date
FR2648862A1 FR2648862A1 (en) 1990-12-28
FR2648862B1 true FR2648862B1 (en) 1991-09-13

Family

ID=9383287

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8908738A Expired - Lifetime FR2648862B1 (en) 1989-06-22 1989-06-22 EXCENTER ROTARY MONOBLOCK BIT

Country Status (1)

Country Link
FR (1) FR2648862B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5678644A (en) * 1995-08-15 1997-10-21 Diamond Products International, Inc. Bi-center and bit method for enhancing stability
US5992548A (en) * 1995-08-15 1999-11-30 Diamond Products International, Inc. Bi-center bit with oppositely disposed cutting surfaces
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
US6439326B1 (en) * 2000-04-10 2002-08-27 Smith International, Inc. Centered-leg roller cone drill bit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2009742A (en) * 1933-05-15 1935-07-30 Chicago Pneumatic Tool Co Face bit
US3367430A (en) * 1966-08-24 1968-02-06 Christensen Diamond Prod Co Combination drill and reamer bit
US3851719A (en) * 1973-03-22 1974-12-03 American Coldset Corp Stabilized under-drilling apparatus
US4515227A (en) * 1983-04-27 1985-05-07 Christensen, Inc. Nozzle placement in a diamond rotating bit including a pilot bit

Also Published As

Publication number Publication date
FR2648862A1 (en) 1990-12-28

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property