CA2585476C - Forage a colonnes de tubage concentriques - Google Patents

Forage a colonnes de tubage concentriques Download PDF

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Publication number
CA2585476C
CA2585476C CA2585476A CA2585476A CA2585476C CA 2585476 C CA2585476 C CA 2585476C CA 2585476 A CA2585476 A CA 2585476A CA 2585476 A CA2585476 A CA 2585476A CA 2585476 C CA2585476 C CA 2585476C
Authority
CA
Canada
Prior art keywords
drill bit
casing
string
pieces
wellbore
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 - Fee Related
Application number
CA2585476A
Other languages
English (en)
Other versions
CA2585476A1 (fr
Inventor
Gregory G. Galloway
David J. Brunnert
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.)
Weatherford Technology Holdings LLC
Original Assignee
Weatherford Lamb 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
Priority claimed from US10/331,964 external-priority patent/US6857487B2/en
Application filed by Weatherford Lamb Inc filed Critical Weatherford Lamb Inc
Publication of CA2585476A1 publication Critical patent/CA2585476A1/fr
Application granted granted Critical
Publication of CA2585476C publication Critical patent/CA2585476C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Earth Drilling (AREA)
CA2585476A 2002-12-30 2003-12-22 Forage a colonnes de tubage concentriques Expired - Fee Related CA2585476C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/331,964 US6857487B2 (en) 2002-12-30 2002-12-30 Drilling with concentric strings of casing
US10/331,964 2002-12-30
CA002453768A CA2453768C (fr) 2002-12-30 2003-12-22 Forage a colonnes de tubage concentriques

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002453768A Division CA2453768C (fr) 2002-12-30 2003-12-22 Forage a colonnes de tubage concentriques

Publications (2)

Publication Number Publication Date
CA2585476A1 CA2585476A1 (fr) 2004-06-30
CA2585476C true CA2585476C (fr) 2010-04-20

Family

ID=38319526

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2585476A Expired - Fee Related CA2585476C (fr) 2002-12-30 2003-12-22 Forage a colonnes de tubage concentriques

Country Status (1)

Country Link
CA (1) CA2585476C (fr)

Also Published As

Publication number Publication date
CA2585476A1 (fr) 2004-06-30

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20191223