GB2257733A - Shear ram apparatus - Google Patents

Shear ram apparatus

Info

Publication number
GB2257733A
GB2257733A GB9220054A GB9220054A GB2257733A GB 2257733 A GB2257733 A GB 2257733A GB 9220054 A GB9220054 A GB 9220054A GB 9220054 A GB9220054 A GB 9220054A GB 2257733 A GB2257733 A GB 2257733A
Authority
GB
United Kingdom
Prior art keywords
shear ram
slots
keys
present
longitudinal movement
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.)
Withdrawn
Application number
GB9220054A
Other versions
GB9220054D0 (en
Inventor
Denzil B Smith
David L O'donnell
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.)
Baroid Technology Inc
Original Assignee
Baroid Technology Inc
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 Baroid Technology Inc filed Critical Baroid Technology Inc
Publication of GB9220054D0 publication Critical patent/GB9220054D0/en
Publication of GB2257733A publication Critical patent/GB2257733A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
    • E21B33/062—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams
    • E21B33/063—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams for shearing drill pipes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/08—Cutting or deforming pipes to control fluid flow

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Shearing Machines (AREA)

Abstract

The present invention is directed to shear ram blowout preventer apparatus for severing and sealing about borehole retrievables, particularly about flexible lines, multi-strand cables. The present invention provides an improved shear ram apparatus including keys (64) and cooperating retainer slots (60) for preventing relative longitudinal movement of the blade member (40) and anvil formation (80) carried on opposable ram assemblies (20, 70) when those assemblies are moved laterally inwardly to their shearing or closed position. In a preferred embodiment the shear ram apparatus of the present invention includes a plurality of keys (64) extending inwardly from the inward face of a first shear ram assembly (70) for cooperation with a plurality of slots (60) on the inward face of a second shear ram assembly (20) wherein the keys (64) engage the slots (60), thus preventing relatively longitudinal movement, particularly separation, before contact of the blade member (40) and anvil formation (80).
GB9220054A 1991-01-25 1992-01-17 Shear ram apparatus Withdrawn GB2257733A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64635991A 1991-01-25 1991-01-25

Publications (2)

Publication Number Publication Date
GB9220054D0 GB9220054D0 (en) 1992-11-18
GB2257733A true GB2257733A (en) 1993-01-20

Family

ID=24592744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9220054A Withdrawn GB2257733A (en) 1991-01-25 1992-01-17 Shear ram apparatus

Country Status (5)

Country Link
CA (1) CA2079001A1 (en)
DE (1) DE4290105T1 (en)
GB (1) GB2257733A (en)
NO (1) NO923717L (en)
WO (1) WO1992013170A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10677010B2 (en) 2016-08-31 2020-06-09 Enovate Systems Limited Shear blade

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296225B1 (en) * 2000-06-29 2001-10-02 Cooper Cameron Corporation Ram bore profile for variable bore packer ram in a ram type blowout preventer
BR0206084B1 (en) * 2001-12-17 2013-08-27 "subsea production system, and cutting module adapted to cut pipe in a well."
US20140048245A1 (en) * 2012-08-16 2014-02-20 Hydril Usa Manufacturing Llc Replaceable Wear Plates for Use with Blind Shear Rams
EP3533966B1 (en) 2018-03-01 2022-11-16 Enovate Systems Limited Improved shear blade

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969838A (en) * 1956-07-23 1961-01-31 Shaffer Tool Works Combination shearing and shut-off ram
US3399728A (en) * 1966-12-01 1968-09-03 Allan R. Taylor Conduit closure apparatus
US4313496A (en) * 1980-04-22 1982-02-02 Cameron Iron Works, Inc. Wellhead shearing apparatus
US4540046A (en) * 1983-09-13 1985-09-10 Nl Industries, Inc. Shear ram apparatus
US4646825A (en) * 1986-01-02 1987-03-03 Winkle Denzal W Van Blowout preventer, shear ram, shear blade and seal therefor
US4923005A (en) * 1989-01-05 1990-05-08 Otis Engineering Corporation System for handling reeled tubing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969838A (en) * 1956-07-23 1961-01-31 Shaffer Tool Works Combination shearing and shut-off ram
US3399728A (en) * 1966-12-01 1968-09-03 Allan R. Taylor Conduit closure apparatus
US4313496A (en) * 1980-04-22 1982-02-02 Cameron Iron Works, Inc. Wellhead shearing apparatus
US4540046A (en) * 1983-09-13 1985-09-10 Nl Industries, Inc. Shear ram apparatus
US4646825A (en) * 1986-01-02 1987-03-03 Winkle Denzal W Van Blowout preventer, shear ram, shear blade and seal therefor
US4923005A (en) * 1989-01-05 1990-05-08 Otis Engineering Corporation System for handling reeled tubing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10677010B2 (en) 2016-08-31 2020-06-09 Enovate Systems Limited Shear blade

Also Published As

Publication number Publication date
CA2079001A1 (en) 1992-07-26
NO923717L (en) 1992-11-19
GB9220054D0 (en) 1992-11-18
NO923717D0 (en) 1992-09-24
DE4290105T1 (en) 1993-05-13
WO1992013170A1 (en) 1992-08-06

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)