WO2003080985A3 - Stacked drill bit and toroidal reamer and method - Google Patents

Stacked drill bit and toroidal reamer and method Download PDF

Info

Publication number
WO2003080985A3
WO2003080985A3 PCT/US2003/008382 US0308382W WO03080985A3 WO 2003080985 A3 WO2003080985 A3 WO 2003080985A3 US 0308382 W US0308382 W US 0308382W WO 03080985 A3 WO03080985 A3 WO 03080985A3
Authority
WO
WIPO (PCT)
Prior art keywords
toroidal
reamer
drill bit
drill
skewed
Prior art date
Application number
PCT/US2003/008382
Other languages
French (fr)
Other versions
WO2003080985A2 (en
Inventor
Allen Kent Rives
Original Assignee
Allen Kent Rives
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 Allen Kent Rives filed Critical Allen Kent Rives
Priority to AU2003218254A priority Critical patent/AU2003218254A1/en
Publication of WO2003080985A2 publication Critical patent/WO2003080985A2/en
Publication of WO2003080985A3 publication Critical patent/WO2003080985A3/en

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
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters

Abstract

The present invention relates to a combination of a drill bit (192) and a skewed toroidal reamer (190) carried on a drill bit shank (110), both free to independently rotate about their respective axes of rotation to drill and widen a bore. Since the toroidal reamer cutter body (190), is skewed and offset from the longitudinal axis of the drill string, only a portion of the cutter elements (131, 132, 133) engage the surface to be crushed at any given moment in the process and thus do not drag across the face of the formation to be cut but rather roll for a smooth, low-torque crushing of the formation. The drill bit-toroidal reamer assembly can be inserted through a restricted diameter to underream a bore similar to bi-center bit systems.
PCT/US2003/008382 2002-03-18 2003-03-18 Stacked drill bit and toroidal reamer and method WO2003080985A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003218254A AU2003218254A1 (en) 2002-03-18 2003-03-18 Stacked drill bit and toroidal reamer and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31914702P 2002-03-18 2002-03-18
US60/319,147 2002-03-18

Publications (2)

Publication Number Publication Date
WO2003080985A2 WO2003080985A2 (en) 2003-10-02
WO2003080985A3 true WO2003080985A3 (en) 2004-03-11

Family

ID=28454514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/008382 WO2003080985A2 (en) 2002-03-18 2003-03-18 Stacked drill bit and toroidal reamer and method

Country Status (2)

Country Link
AU (1) AU2003218254A1 (en)
WO (1) WO2003080985A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7090034B2 (en) * 2002-02-14 2006-08-15 Allen Kent Rives Reamer having toroidal crusher body and method of use
CN102373884B (en) * 2010-08-17 2013-12-04 淮南矿业(集团)有限责任公司 Borehole-enlarging and bottom-enlarging drill

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945447A (en) * 1974-09-16 1976-03-23 Rapidex, Inc. Boring apparatus
WO2002064939A1 (en) * 2001-02-14 2002-08-22 Allen Kent Rives Reamer having toroidal cutter body and method of use

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945447A (en) * 1974-09-16 1976-03-23 Rapidex, Inc. Boring apparatus
WO2002064939A1 (en) * 2001-02-14 2002-08-22 Allen Kent Rives Reamer having toroidal cutter body and method of use

Also Published As

Publication number Publication date
WO2003080985A2 (en) 2003-10-02
AU2003218254A8 (en) 2003-10-08
AU2003218254A1 (en) 2003-10-08

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