CA2219426A1 - Drill string fitting - Google Patents

Drill string fitting

Info

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
Application number
CA002219426A
Other languages
French (fr)
Other versions
CA2219426C (en
Inventor
Geoffrey Neil Murray
Denis Robert Fernandes
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.)
Weatherford Technology 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
Application filed by Individual filed Critical Individual
Priority to CA2567339A priority Critical patent/CA2567339C/en
Priority to CA002567346A priority patent/CA2567346C/en
Priority claimed from PCT/NZ1996/000034 external-priority patent/WO1996034173A1/en
Publication of CA2219426A1 publication Critical patent/CA2219426A1/en
Application granted granted Critical
Publication of CA2219426C publication Critical patent/CA2219426C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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).
CA002219426A 1995-04-27 1996-04-26 Drill string fitting Expired - Lifetime CA2219426C (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2571634A (en) * 2018-02-28 2019-09-04 Kaseum Holdings Ltd Roller tool

Cited By (3)

* Cited by examiner, † Cited by third party
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