EP0778392A3 - Method and apparatus for removing the uppermost part of a construction in the seabed - Google Patents

Method and apparatus for removing the uppermost part of a construction in the seabed Download PDF

Info

Publication number
EP0778392A3
EP0778392A3 EP96203417A EP96203417A EP0778392A3 EP 0778392 A3 EP0778392 A3 EP 0778392A3 EP 96203417 A EP96203417 A EP 96203417A EP 96203417 A EP96203417 A EP 96203417A EP 0778392 A3 EP0778392 A3 EP 0778392A3
Authority
EP
European Patent Office
Prior art keywords
construction
seabed
uppermost part
drilling device
drill hole
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Withdrawn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
EP96203417A
Other languages
German (de)
French (fr)
Other versions
EP0778392A2 (en
Inventor
Maarten Evert Hardon
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.)
Noordhoek Overseas Equipment BV
Original Assignee
Noordhoek Overseas Equipment BV
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 Noordhoek Overseas Equipment BV filed Critical Noordhoek Overseas Equipment BV
Publication of EP0778392A2 publication Critical patent/EP0778392A2/en
Publication of EP0778392A3 publication Critical patent/EP0778392A3/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Withdrawn legal-status Critical Current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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
    • 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
    • E21B29/12—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 specially adapted for underwater installations
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/18—Anchoring or feeding in the borehole
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

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)
  • Marine Sciences & Fisheries (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

When removing the uppermost part of a construction in the seabed a drilling device is applied around said construction in the seabed. Using said drilling device a drill hole is made in the seabed to a certain depth around the construction. Next a cutting device is lowered in said drill hole and cuts said construction at the desired depth from the outside. Next the part of the construction cut loose can be removed together with the drilling device and the cutting device.
EP96203417A 1995-12-04 1996-12-03 Method and apparatus for removing the uppermost part of a construction in the seabed Withdrawn EP0778392A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1001807A NL1001807C2 (en) 1995-12-04 1995-12-04 Method and device for removing the top part of a construction located in the seabed.
NL1001807 1995-12-04

Publications (2)

Publication Number Publication Date
EP0778392A2 EP0778392A2 (en) 1997-06-11
EP0778392A3 true EP0778392A3 (en) 2000-06-07

Family

ID=19761967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96203417A Withdrawn EP0778392A3 (en) 1995-12-04 1996-12-03 Method and apparatus for removing the uppermost part of a construction in the seabed

Country Status (3)

Country Link
EP (1) EP0778392A3 (en)
NL (1) NL1001807C2 (en)
NO (1) NO965152L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321634A (en) 1997-01-29 1998-08-05 Weatherford Lamb Tong positioning apparatus
US6827145B2 (en) 1997-01-29 2004-12-07 Weatherford/Lamb, Inc. Methods and apparatus for severing nested strings of tubulars
CA2433362C (en) * 2001-03-20 2006-07-18 Weatherford/Lamb, Inc. Methods and apparatus for severing nested strings of tubulars
US8056633B2 (en) 2008-04-28 2011-11-15 Barra Marc T Apparatus and method for removing subsea structures
US20110088911A1 (en) * 2009-10-15 2011-04-21 Intermoor, Inc. Embedded multi-string well head shear

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644560A (en) * 1925-05-25 1927-10-04 Bignell Edward Apparatus for removing piles
US3020965A (en) * 1959-08-19 1962-02-13 Jr Richard F Keller Hydraulic pile extractor
EP0243981A1 (en) * 1986-04-30 1987-11-04 Rauma-Repola Oy Method for cutting-off an elongate piece of concrete and a cutting tool
US5002432A (en) * 1987-07-22 1991-03-26 Dynovation Design & Engineering Inc. Device and method to cut and coil piles, casings and conductors
US5361748A (en) * 1991-11-06 1994-11-08 Francesco Matteucci Method and device for cutting underwater structures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644560A (en) * 1925-05-25 1927-10-04 Bignell Edward Apparatus for removing piles
US3020965A (en) * 1959-08-19 1962-02-13 Jr Richard F Keller Hydraulic pile extractor
EP0243981A1 (en) * 1986-04-30 1987-11-04 Rauma-Repola Oy Method for cutting-off an elongate piece of concrete and a cutting tool
US5002432A (en) * 1987-07-22 1991-03-26 Dynovation Design & Engineering Inc. Device and method to cut and coil piles, casings and conductors
US5361748A (en) * 1991-11-06 1994-11-08 Francesco Matteucci Method and device for cutting underwater structures

Also Published As

Publication number Publication date
NO965152D0 (en) 1996-12-03
NL1001807C2 (en) 1997-06-06
EP0778392A2 (en) 1997-06-11
NO965152L (en) 1997-06-05

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