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 PDFInfo
- 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
Links
- 238000000034 method Methods 0.000 title abstract 2
- 239000004568 cement Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
Landscapes
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Earth Drilling (AREA)
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.
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7878240B2 (en) | 2007-06-05 | 2011-02-01 | Baker Hughes Incorporated | Downhole swaging system and method |
-
1997
- 1997-02-27 CA CA002529480A patent/CA2529480C/en not_active Expired - Fee Related
Cited By (1)
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |