CA2304966A1 - Bi-center bit adapted to drill casing shoe - Google Patents

Bi-center bit adapted to drill casing shoe Download PDF

Info

Publication number
CA2304966A1
CA2304966A1 CA002304966A CA2304966A CA2304966A1 CA 2304966 A1 CA2304966 A1 CA 2304966A1 CA 002304966 A CA002304966 A CA 002304966A CA 2304966 A CA2304966 A CA 2304966A CA 2304966 A1 CA2304966 A1 CA 2304966A1
Authority
CA
Canada
Prior art keywords
casing shoe
center bit
drill casing
bit adapted
drill
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
CA002304966A
Other languages
French (fr)
Other versions
CA2304966C (en
Inventor
Coy M. Fielder
Rogerio H. Silva
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.)
ReedHycalog LP
Original Assignee
Diamond Products International Inc
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 Diamond Products International Inc filed Critical Diamond Products International Inc
Publication of CA2304966A1 publication Critical patent/CA2304966A1/en
Application granted granted Critical
Publication of CA2304966C publication Critical patent/CA2304966C/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
    • E21B10/42—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

Abstract

Although particular detailed embodiments of the apparatus and method have been described herein, it should be understood that the invention is not restricted to the details of the preferred embodiment. Many changes in design, composition, configuration and dimensions are possible without departing from the spirit and scope of the instant invention.
CA002304966A 1999-09-08 2000-04-10 Bi-center bit adapted to drill casing shoe Expired - Lifetime CA2304966C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/392,043 US6340064B2 (en) 1999-02-03 1999-09-08 Bi-center bit adapted to drill casing shoe
US09/392,043 1999-09-08

Publications (2)

Publication Number Publication Date
CA2304966A1 true CA2304966A1 (en) 2001-03-08
CA2304966C CA2304966C (en) 2005-04-05

Family

ID=23549020

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002304966A Expired - Lifetime CA2304966C (en) 1999-09-08 2000-04-10 Bi-center bit adapted to drill casing shoe

Country Status (5)

Country Link
US (2) US6340064B2 (en)
EP (1) EP1091083B9 (en)
CA (1) CA2304966C (en)
DE (1) DE60023238T2 (en)
NO (1) NO20004441L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140262536A1 (en) * 2013-03-15 2014-09-18 Smith International, Inc. Downhole cutting tools having hybrid cutting structures

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US9316061B2 (en) 2006-08-11 2016-04-19 David R. Hall High impact resistant degradation element
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US8240404B2 (en) * 2006-08-11 2012-08-14 Hall David R Roof bolt bit
US20080035389A1 (en) * 2006-08-11 2008-02-14 Hall David R Roof Mining Drill Bit
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US8839888B2 (en) 2010-04-23 2014-09-23 Schlumberger Technology Corporation Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
USD674422S1 (en) 2007-02-12 2013-01-15 Hall David R Drill bit with a pointed cutting element and a shearing cutting element
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US7866416B2 (en) 2007-06-04 2011-01-11 Schlumberger Technology Corporation Clutch for a jack element
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140262536A1 (en) * 2013-03-15 2014-09-18 Smith International, Inc. Downhole cutting tools having hybrid cutting structures

Also Published As

Publication number Publication date
US20010045306A1 (en) 2001-11-29
DE60023238T2 (en) 2006-07-13
CA2304966C (en) 2005-04-05
DE60023238D1 (en) 2006-03-02
EP1091083A1 (en) 2001-04-11
NO20004441L (en) 2001-03-09
NO20004441D0 (en) 2000-09-06
EP1091083B9 (en) 2006-06-28
US6340064B2 (en) 2002-01-22
US20020092378A1 (en) 2002-07-18
US6629476B2 (en) 2003-10-07
EP1091083B1 (en) 2005-10-19

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Legal Events

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EEER Examination request
MKEX Expiry

Effective date: 20200410