CA2529480A1 - Method and apparatus for establishing branch wells at a node of a parent well - Google Patents

Method and apparatus for establishing branch wells at a node of a parent well Download PDF

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Publication number
CA2529480A1
CA2529480A1 CA002529480A CA2529480A CA2529480A1 CA 2529480 A1 CA2529480 A1 CA 2529480A1 CA 002529480 A CA002529480 A CA 002529480A CA 2529480 A CA2529480 A CA 2529480A CA 2529480 A1 CA2529480 A1 CA 2529480A1
Authority
CA
Canada
Prior art keywords
branching
well
sub
outlet
branch
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
CA002529480A
Other languages
French (fr)
Other versions
CA2529480C (en
Inventor
Herve Ohmer
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.)
Schlumberger Canada Ltd
Original Assignee
Schlumberger Canada Limited
Herve Ohmer
Schlumberger Technology Corporation
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 US08/798,591 external-priority patent/US5944107A/en
Application filed by Schlumberger Canada Limited, Herve Ohmer, Schlumberger Technology Corporation filed Critical Schlumberger Canada Limited
Priority claimed from CA 2198689 external-priority patent/CA2198689C/en
Publication of CA2529480A1 publication Critical patent/CA2529480A1/en
Application granted granted Critical
Publication of CA2529480C publication Critical patent/CA2529480C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

A method and apparatus for creating multiple branch wells from a parent well is disclosed.
A multiple branching sub is provided for placement at a branching node of a well. Such sub includes a branching chamber and a plurality of branching outlet members. The outlet members during construction of the branching sub, have previously been distorted into oblong shapes so that all of the branching outlet members fit within an imaginary cylinder which is coaxial with and substantially the same radius as the branching chamber. After deployment of the branching sub via a parent casing in the well, a forming tool is lowered to the interior of the sub. The outlet members are extended outwardly by the forming tool and simultaneously formed into substantially round tubes. Next, each outlet member is plugged with cement, after which each branch well is drilled through a respective outlet member. If desired, each branch may be lined with casing and sealed to a branching outlet by means of a casing hanger. A manifold placed in the branching chamber controls the production of each branch well to the parent well.
CA002529480A 1996-03-11 1997-02-27 Method and apparatus for establishing branch wells at a node of a parent well Expired - Fee Related CA2529480C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US1322796P 1996-03-11 1996-03-11
US60/013,227 1996-03-11
US2503396P 1996-08-27 1996-08-27
US60/025,033 1996-08-27
US08/798,591 US5944107A (en) 1996-03-11 1997-02-11 Method and apparatus for establishing branch wells at a node of a parent well
US08/798,591 1997-02-11
CA 2198689 CA2198689C (en) 1996-03-11 1997-02-27 Method and apparatus for establishing branch wells at a node of a parent well

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA 2198689 Division CA2198689C (en) 1996-03-11 1997-02-27 Method and apparatus for establishing branch wells at a node of a parent well

Publications (2)

Publication Number Publication Date
CA2529480A1 true CA2529480A1 (en) 1997-09-11
CA2529480C CA2529480C (en) 2006-12-12

Family

ID=35851971

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002529480A Expired - Fee Related CA2529480C (en) 1996-03-11 1997-02-27 Method and apparatus for establishing branch wells at a node of a parent well

Country Status (1)

Country Link
CA (1) CA2529480C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7878240B2 (en) 2007-06-05 2011-02-01 Baker Hughes Incorporated Downhole swaging system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7878240B2 (en) 2007-06-05 2011-02-01 Baker Hughes Incorporated Downhole swaging system and method

Also Published As

Publication number Publication date
CA2529480C (en) 2006-12-12

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