CA2219426A1 - Drill string fitting - Google Patents
Drill string fittingInfo
- Publication number
- CA2219426A1 CA2219426A1 CA002219426A CA2219426A CA2219426A1 CA 2219426 A1 CA2219426 A1 CA 2219426A1 CA 002219426 A CA002219426 A CA 002219426A CA 2219426 A CA2219426 A CA 2219426A CA 2219426 A1 CA2219426 A1 CA 2219426A1
- Authority
- CA
- Canada
- Prior art keywords
- fitting
- drill string
- inner section
- friction
- minimise
- 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
Landscapes
- Earth Drilling (AREA)
Abstract
A fitting for reducing friction between a drilling string and the wall of a well. In a first aspect the fitting has recesses (6) provided along the bore of the fitting to lubricate the interface between the fitting and the drill string to minimise friction. In a second aspect a fitting is provided on a drill string having rotatable roller means (21) which can rotate about a point of rotation (23) so as to minimise both axial and rotational friction. According to a third aspect the fitting comprises an inner section (30) secured to a drill pipe (35) or other fitting and an outer section (31) rotatable about the inner section (30). Preferably a sealed bearing (36, 42-47, 37, 38) is provided between the inner section (30) and outer section (31).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2567339A CA2567339C (en) | 1995-04-27 | 1996-04-26 | Drill string fitting |
CA002567346A CA2567346C (en) | 1995-04-27 | 1996-04-26 | Drill string fitting |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ272003 | 1995-04-27 | ||
PCT/NZ1996/000034 WO1996034173A1 (en) | 1995-04-27 | 1996-04-26 | Drill string fitting |
NZ27200396 | 1996-04-26 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002567346A Division CA2567346C (en) | 1995-04-27 | 1996-04-26 | Drill string fitting |
CA2567339A Division CA2567339C (en) | 1995-04-27 | 1996-04-26 | Drill string fitting |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2219426A1 true CA2219426A1 (en) | 1996-10-31 |
CA2219426C CA2219426C (en) | 2007-03-13 |
Family
ID=19925241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002219426A Expired - Lifetime CA2219426C (en) | 1995-04-27 | 1996-04-26 | Drill string fitting |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2219426C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2571634A (en) * | 2018-02-28 | 2019-09-04 | Kaseum Holdings Ltd | Roller tool |
-
1996
- 1996-04-26 CA CA002219426A patent/CA2219426C/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2571634A (en) * | 2018-02-28 | 2019-09-04 | Kaseum Holdings Ltd | Roller tool |
GB2571634B (en) * | 2018-02-28 | 2020-07-15 | Kaseum Holdings Ltd | Roller tool |
US11668140B2 (en) | 2018-02-28 | 2023-06-06 | Impact Selector Limited | Roller tool |
Also Published As
Publication number | Publication date |
---|---|
CA2219426C (en) | 2007-03-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NZ335944A (en) | Drill string fitting with rotatable mounts on body exterior housing rollers that can rotate so as to reduce friction in axial and transverse directions | |
CA2309615A1 (en) | A friction reducing tool | |
CA2363178A1 (en) | Pipe running tool | |
CA2185205A1 (en) | Steerable drilling tool and system | |
CA2154959A1 (en) | Steerable drilling tool and system | |
CA2254170A1 (en) | Sealed bearing drill bit with dual-seal configuration | |
EP1632639A3 (en) | Downhole tool | |
CA2376823A1 (en) | Apparatus and method for directional drilling with coiled tubing | |
WO2003054338A3 (en) | Offset elevator for a pipe running tool and a method of using a pipe running tool | |
EP1338754A3 (en) | Method for forming a window in a tubular and apparatus for use in said method | |
CA2254044A1 (en) | Sealed bearing drill bit with dual-seal configuration and fluid cleaning capability | |
CA2034817A1 (en) | Drill pipe/casing protector | |
CA2316796A1 (en) | Downhole apparatus | |
CA2299606A1 (en) | Bearing assembly for wellbore drilling | |
CA2182788A1 (en) | Drill casing installation equipment with external friction reducing means | |
WO2003062679A3 (en) | Shaft sealing system for a rotary mechanical device | |
CA2257951A1 (en) | Drilling apparatus | |
AU2002228166A1 (en) | Directional drilling apparatus | |
CA2339417A1 (en) | Well tubing rotator | |
CA2405234A1 (en) | Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system | |
CA2108838A1 (en) | Apparatus for Rotating a Tubing String of a Pumping Wellhead | |
CA2387568A1 (en) | Drill bit with eccentric body | |
AU5349798A (en) | Making and breaking of couplings between pipe sections in a drilling rig | |
AU3745497A (en) | Hydraulic drive for rotation of a rock drill | |
CA2151685A1 (en) | Rock Bit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20160426 |
|
MKEX | Expiry |
Effective date: 20160426 |