EP2813623A1 - Dispositif d'ancrage et ensemble de forage incorporant un tel élément d'ancrage - Google Patents

Dispositif d'ancrage et ensemble de forage incorporant un tel élément d'ancrage Download PDF

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Publication number
EP2813623A1
EP2813623A1 EP20130171510 EP13171510A EP2813623A1 EP 2813623 A1 EP2813623 A1 EP 2813623A1 EP 20130171510 EP20130171510 EP 20130171510 EP 13171510 A EP13171510 A EP 13171510A EP 2813623 A1 EP2813623 A1 EP 2813623A1
Authority
EP
European Patent Office
Prior art keywords
drilling assembly
body member
anchor device
radially outer
annular cavity
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Withdrawn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
EP20130171510
Other languages
German (de)
English (en)
Inventor
William Fleet Ruffman
John Swingler
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.)
Blade Offshore Services Ltd
Original Assignee
Blade Offshore Services 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
Application filed by Blade Offshore Services Ltd filed Critical Blade Offshore Services Ltd
Priority to EP20130171510 priority Critical patent/EP2813623A1/fr
Priority to PCT/EP2014/061599 priority patent/WO2014198607A1/fr
Publication of EP2813623A1 publication Critical patent/EP2813623A1/fr
Priority to HK15101870.6A priority patent/HK1201304A1/xx
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/801—Ground anchors driven by screwing

Definitions

  • the present invention relates to anchor devices and relates particularly, but not exclusively, to anchor devices for onshore drilling applications.
  • the invention also relates to drilling assemblies incorporating such anchor devices.
  • Preferred embodiments of the present invention seek to overcome one or more of the above disadvantages of the prior art.
  • an anchor device adapted to be anchored in an annular cavity, the anchor device comprising:-
  • annular cavity is formed by means of at least rotation of the cutting portion, such that the annular cavity defines a second radially inner surface spaced from the first radially inner surface and a second radially outer surface spaced from the first radially outer surface
  • the drilling assembly defines at least one fluid delivery channel for delivering fluid to a region adjacent the cutting portion to remove drill cuttings from said region via a space between the first radially outer surface and the second radially outer surface and/or a space between said first radially inner surface and said second radially inner surface
  • the anchor device is adapted to disengage the body member after formation of the annular cavity
  • Said body portion may define said first radially inner surface and said anchor device may be adapted to engage a body member such that said body portion at least partially surrounds said body member.
  • the anchor device may further comprise engaging means adapted to sealingly engage the body member.
  • This provides the advantage of enabling one or more of said fluid delivery channels to be defined between the anchor device and the body member, thereby simplifying construction and reducing the cost of the drilling assembly.
  • the anchor device may further comprise at least one mounting portion arranged adjacent a second end of said body portion.
  • At least one said mounting portion may comprise a respective flange.
  • the anchor device may further comprise at least one fluid outlet communicating with at least one respective said fluid delivery channel to enable delivery of fluid to said region.
  • the body member may be adapted to rotate with said cutting portion during formation of said annular cavity.
  • the cutting portion may be adapted to rotate relative to said body member during formation of said annular cavity.
  • the anchor device may further comprise at least one extension device comprising a respective first member adapted to be mounted to an end portion of said body portion and a respective second member adapted to be mounted to an end portion of said body member.
  • This provides the advantage of enabling the device to be used in applications where limited headspace is available.
  • a drilling assembly comprising an anchor device as defined above, and a body member adapted to engage the anchor device to enable formation of an annular cavity by means of at least rotation of said drilling assembly.
  • a method of locating an anchor member in an annular cavity comprising:-
  • the method may further comprise separating the body member from the anchor device to leave the anchor device in said cavity.
  • the step of introducing bonding material may comprise introducing bonding material into at least one said fluid delivery channel to cause at least some of said bonding material to pass from said fluid delivery channel to spaces between said second radially outer surface and said drilling assembly and between said second radially inner surface and said drilling assembly.
  • the body member may be separated from the anchor device subsequently to introduction of bonding material between said second radially inner surface and said drilling assembly and between said second radially outer surface and said drilling assembly.
  • a drilling assembly 2 embodying the present invention comprises an anchor device 4 having an elongate generally cylindrical body portion 6 defining a first radially outer surface 8 and a third surface 10.
  • a cutting portion in the form of an annular widened portion 12 at a first end of the body portion 6 and carrying cutting elements 14 of hardened material such as tungsten carbide is attached such that rotation of the drilling assembly 2 about its longitudinal axis 16 causes the cutting elements 14 to form an annular cavity 18 having a second radially inner surface 20 and a second radially outer surface 22.
  • the drilling assembly 2 also includes a body member 24 for sealingly engaging an upper surface of the widened portion 12 and to be surrounded by the body portion 6 so that the anchor device 4 and body member 24 define an annular chamber 26 between the third surface 10 and a fourth surface 28 defined by the body member 24.
  • the body member 24 defines a first radially inner surface 30 which is spaced from the second radially inner surface 20 to define a first gap 32.
  • the annular chamber 26 enables delivery of fluid from the surface 34 of the cavity 18 to one or more fluid outlets 38 near the widened portion 12 communicating with a region around the cutting elements 14 to enable drill cuttings to be removed from the region around the cutting elements 14 via a second gap 40 between the second radially outer surface 22 of annular cavity 18 and the first radially outer surface 8 of the body portion 6.
  • One or more extension devices 42 can be attached to an upper part of the drilling assembly 2 by suitable means (not shown) such as pins and which will be familiar to persons skilled in the art.
  • Each extension device 42 has an inner member 44 for attachment to the body member 24 and an outer member 46 for attachment to the body portion 6 to define an annular chamber 48 forming an extension to the annular chamber 26.
  • the anchor device 4 is sealingly mounted to the body member 24 to form the drilling assembly 2, which is then rotated about its longitudinal axis 16 by means of drive means (not shown) to cause the cutting elements 14 to form the annular cavity 18.
  • Suitable apparatus may also be provided for urging the drilling assembly 2 downwardly to assist in formation of the annular cavity 18.
  • suitable fluid such as water is introduced from ground level to the fluid outlets 38 via the annular chamber 26 between the anchor device 4 and body member 24 and via the annular chamber 48 if one or more extension devices 42 are attached, to remove drill cuttings generated by the cutting elements 14 via the second gap 40.
  • Suitable mounting attachments such as a flange (not shown)
  • structures to be anchored in place can be more easily attached to the upper end of the anchor device, although it will be appreciated by persons skilled in the art that other methods for attaching structures to the anchored anchor device 4 can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Earth Drilling (AREA)
EP20130171510 2013-06-11 2013-06-11 Dispositif d'ancrage et ensemble de forage incorporant un tel élément d'ancrage Withdrawn EP2813623A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20130171510 EP2813623A1 (fr) 2013-06-11 2013-06-11 Dispositif d'ancrage et ensemble de forage incorporant un tel élément d'ancrage
PCT/EP2014/061599 WO2014198607A1 (fr) 2013-06-11 2014-06-04 Dispositif d'ancrage et ensemble de forage intégrant ledit dispositif d'ancrage
HK15101870.6A HK1201304A1 (en) 2013-06-11 2015-02-24 Anchor device and drilling assembly incorporating such anchor member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20130171510 EP2813623A1 (fr) 2013-06-11 2013-06-11 Dispositif d'ancrage et ensemble de forage incorporant un tel élément d'ancrage

Publications (1)

Publication Number Publication Date
EP2813623A1 true EP2813623A1 (fr) 2014-12-17

Family

ID=48626311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20130171510 Withdrawn EP2813623A1 (fr) 2013-06-11 2013-06-11 Dispositif d'ancrage et ensemble de forage incorporant un tel élément d'ancrage

Country Status (3)

Country Link
EP (1) EP2813623A1 (fr)
HK (1) HK1201304A1 (fr)
WO (1) WO2014198607A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3199709A1 (fr) 2016-02-01 2017-08-02 Blade Offshore Services Ltd. Appareil et procédé pour forer des cavités annulaires

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008966A1 (de) * 2006-02-24 2007-09-06 Friedr. Ischebeck Gmbh Injektionskopf

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008966A1 (de) * 2006-02-24 2007-09-06 Friedr. Ischebeck Gmbh Injektionskopf

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3199709A1 (fr) 2016-02-01 2017-08-02 Blade Offshore Services Ltd. Appareil et procédé pour forer des cavités annulaires

Also Published As

Publication number Publication date
HK1201304A1 (en) 2015-08-28
WO2014198607A1 (fr) 2014-12-18

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