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CA2526153A1 - Whipstock assembly for a sleeved casing - Google Patents

Whipstock assembly for a sleeved casing Download PDF

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Publication number
CA2526153A1
CA2526153A1 CA002526153A CA2526153A CA2526153A1 CA 2526153 A1 CA2526153 A1 CA 2526153A1 CA 002526153 A CA002526153 A CA 002526153A CA 2526153 A CA2526153 A CA 2526153A CA 2526153 A1 CA2526153 A1 CA 2526153A1
Authority
CA
Canada
Prior art keywords
whipstock
casing
open window
drillbit
window
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
CA002526153A
Other languages
French (fr)
Other versions
CA2526153C (en
Inventor
Robert Joe Coon
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.)
Baker Hughes Holdings LLC
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
Priority claimed from US08/371,868 external-priority patent/US5484017A/en
Application filed by Individual filed Critical Individual
Publication of CA2526153A1 publication Critical patent/CA2526153A1/en
Application granted granted Critical
Publication of CA2526153C publication Critical patent/CA2526153C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Earth Drilling (AREA)

Abstract

A casing is provided with a sealable shifting sleeve. A whipstock is insertable into the casing and may be supported off of the casing in a predetermined location so that it is oriented toward an open window in the casing when the shifting sleeve is selectively moved upwardly. By presenting an open window for the whipstock oriented toward the window, a drillbit may be lowered through the casing to interact with the whipstock to immediately begin the drilling of the deviated wellbore. The drillbit cuts through any cement, if present, and into the formation. A bore is presented in the whipstock to allow production from pay zones below the whipstock while it is in place. Should it become necessary, the sliding sleeve may be subsequently closed to isolate the deviated wellbore which has been drilled with the whipstock through the open window.
CA002526153A 1995-01-12 1996-01-10 Whipstock assembly for a sleeved casing Expired - Fee Related CA2526153C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/371,868 1995-01-12
US08/371,868 US5484017A (en) 1995-01-12 1995-01-12 Whipstock assembly for a sleeved casing
CA002166907A CA2166907C (en) 1995-01-12 1996-01-10 Whipstock assembly for a sleeved casing

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002166907A Division CA2166907C (en) 1995-01-12 1996-01-10 Whipstock assembly for a sleeved casing

Publications (2)

Publication Number Publication Date
CA2526153A1 true CA2526153A1 (en) 1996-07-13
CA2526153C CA2526153C (en) 2008-08-19

Family

ID=35851939

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002526153A Expired - Fee Related CA2526153C (en) 1995-01-12 1996-01-10 Whipstock assembly for a sleeved casing

Country Status (1)

Country Link
CA (1) CA2526153C (en)

Also Published As

Publication number Publication date
CA2526153C (en) 2008-08-19

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MKLA Lapsed

Effective date: 20140110