CA2143793A1 - Surface adjustable bent housing - Google Patents
Surface adjustable bent housingInfo
- Publication number
- CA2143793A1 CA2143793A1 CA 2143793 CA2143793A CA2143793A1 CA 2143793 A1 CA2143793 A1 CA 2143793A1 CA 2143793 CA2143793 CA 2143793 CA 2143793 A CA2143793 A CA 2143793A CA 2143793 A1 CA2143793 A1 CA 2143793A1
- Authority
- CA
- Canada
- Prior art keywords
- housing
- mandrel
- ring
- central axis
- face
- 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
Abstract
An adjustable bent housing for use in downhole drilling which includes a housing, mandrel, ring and locking mechanism. The housing has a housing central axis, a downward facing end face defining a plane whose normal is offset from the housing central axis, and an inner shoulder parallel to the downward facing end face. The mandrel has a mandrel central axis, a first end dimensioned to fit inside the housing and having a downward facing outer shoulder defining a plane offset from the mandrel central axis.
The ring is axially slidable on the mandrel, with a ring central axis and an upward facing end face defining a plane whose normal is offset from the ring central axis. A locking mechanism, a mandrel head threaded onto the mandrel, engages and disengages the upward facing end face of the ring with the downward facing end face of the housing and simultaneously engages and disengages the inner shoulder of the housing with the outer shoulder of the mandrel. Keys or like means are used to control the position of the ring on the mandrel in selected circumferential positions only. One of the keys may be differently sized from other keys. Preferably markings on the ring and housing are used indicate relative degrees of rotation of the housing in relation to the ring.
The ring is axially slidable on the mandrel, with a ring central axis and an upward facing end face defining a plane whose normal is offset from the ring central axis. A locking mechanism, a mandrel head threaded onto the mandrel, engages and disengages the upward facing end face of the ring with the downward facing end face of the housing and simultaneously engages and disengages the inner shoulder of the housing with the outer shoulder of the mandrel. Keys or like means are used to control the position of the ring on the mandrel in selected circumferential positions only. One of the keys may be differently sized from other keys. Preferably markings on the ring and housing are used indicate relative degrees of rotation of the housing in relation to the ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2143793 CA2143793C (en) | 1995-02-27 | 1995-02-27 | Surface adjustable bent housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2143793 CA2143793C (en) | 1995-02-27 | 1995-02-27 | Surface adjustable bent housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2143793A1 true CA2143793A1 (en) | 1996-08-28 |
| CA2143793C CA2143793C (en) | 1998-04-21 |
Family
ID=4155348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2143793 Expired - Fee Related CA2143793C (en) | 1995-02-27 | 1995-02-27 | Surface adjustable bent housing |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2143793C (en) |
-
1995
- 1995-02-27 CA CA 2143793 patent/CA2143793C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2143793C (en) | 1998-04-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |