GB2282170A - Downhole tools - Google Patents

Downhole tools

Info

Publication number
GB2282170A
GB2282170A GB9423958A GB9423958A GB2282170A GB 2282170 A GB2282170 A GB 2282170A GB 9423958 A GB9423958 A GB 9423958A GB 9423958 A GB9423958 A GB 9423958A GB 2282170 A GB2282170 A GB 2282170A
Authority
GB
United Kingdom
Prior art keywords
tool
wellbore
downhole
roller
contact
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
GB9423958A
Other versions
GB2282170B (en
GB9423958D0 (en
Inventor
Neil Andrew Abercrombi Simpson
Raymond Paul Coey
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.)
Astec Developments Ltd
Original Assignee
Astec Developments Ltd
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 GB929211168A external-priority patent/GB9211168D0/en
Priority claimed from GB929213983A external-priority patent/GB9213983D0/en
Application filed by Astec Developments Ltd filed Critical Astec Developments Ltd
Priority to GB9423958A priority Critical patent/GB2282170B/en
Priority claimed from PCT/GB1993/001114 external-priority patent/WO1993024728A1/en
Publication of GB9423958D0 publication Critical patent/GB9423958D0/en
Publication of GB2282170A publication Critical patent/GB2282170A/en
Application granted granted Critical
Publication of GB2282170B publication Critical patent/GB2282170B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/001—Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for displacing a cable or cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/18—Anchoring or feeding in the borehole

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

A downhole tool for providing rotary support of a downhole assembly in which the tool is incorporated, the tool also converting rotary contact with the wellbore to a longitudinal force tending to propel the assembly along the wellbore. The tool resembles a roller stabiliser in which the roller axes are skewed to be tangential to a notional helix, such that the natural (non-slipping) paths of roller contact with the wellbore have a longitudinal component in addition to the usual circumferential path. The tool can be used on drillstrings and in downhole motor assemblies. The invention has particular advantage in highly deviated wells since it simultaneously compensates for increased bore friction and dynamically enhances weight-on-bit. <IMAGE>
GB9423958A 1992-05-27 1993-05-27 Downhole tools Expired - Lifetime GB2282170B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9423958A GB2282170B (en) 1992-05-27 1993-05-27 Downhole tools

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB929211168A GB9211168D0 (en) 1992-05-27 1992-05-27 Well-drilling tools
GB929213983A GB9213983D0 (en) 1992-07-01 1992-07-01 Well-drilling tools
GB9423958A GB2282170B (en) 1992-05-27 1993-05-27 Downhole tools
PCT/GB1993/001114 WO1993024728A1 (en) 1992-05-27 1993-05-27 Downhole tools

Publications (3)

Publication Number Publication Date
GB9423958D0 GB9423958D0 (en) 1995-01-25
GB2282170A true GB2282170A (en) 1995-03-29
GB2282170B GB2282170B (en) 1996-06-19

Family

ID=27266205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9423958A Expired - Lifetime GB2282170B (en) 1992-05-27 1993-05-27 Downhole tools

Country Status (1)

Country Link
GB (1) GB2282170B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5794703A (en) * 1996-07-03 1998-08-18 Ctes, L.C. Wellbore tractor and method of moving an item through a wellbore

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365678A (en) * 1980-11-28 1982-12-28 Mobil Oil Corporation Tubular drill string member with contoured circumferential surface
EP0333450A1 (en) * 1988-03-15 1989-09-20 Charles Abernethy Anderson Downhole Stabilisers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365678A (en) * 1980-11-28 1982-12-28 Mobil Oil Corporation Tubular drill string member with contoured circumferential surface
EP0333450A1 (en) * 1988-03-15 1989-09-20 Charles Abernethy Anderson Downhole Stabilisers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5794703A (en) * 1996-07-03 1998-08-18 Ctes, L.C. Wellbore tractor and method of moving an item through a wellbore
US6082461A (en) * 1996-07-03 2000-07-04 Ctes, L.C. Bore tractor system
US6089323A (en) * 1996-07-03 2000-07-18 Ctes, L.C. Tractor system

Also Published As

Publication number Publication date
GB2282170B (en) 1996-06-19
GB9423958D0 (en) 1995-01-25

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20130526