US20140130440A1 - Drilling derrick for offshore drilling incorporating a stressed-skin and offshore platform - Google Patents

Drilling derrick for offshore drilling incorporating a stressed-skin and offshore platform Download PDF

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Publication number
US20140130440A1
US20140130440A1 US14/125,495 US201214125495A US2014130440A1 US 20140130440 A1 US20140130440 A1 US 20140130440A1 US 201214125495 A US201214125495 A US 201214125495A US 2014130440 A1 US2014130440 A1 US 2014130440A1
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US
United States
Prior art keywords
drilling derrick
drilling
derrick
section
deck
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.)
Abandoned
Application number
US14/125,495
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English (en)
Inventor
Robert Ludwigson
Karl-Gustav Jansson
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.)
Bassoe Technology AB
Original Assignee
Bassoe Technology AB
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 Bassoe Technology AB filed Critical Bassoe Technology AB
Publication of US20140130440A1 publication Critical patent/US20140130440A1/en
Assigned to BASSOE TECHNOLOGY AB reassignment BASSOE TECHNOLOGY AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JANSSON, Karl-Gustav, LUDWIGSON, ROBERT
Abandoned legal-status Critical Current

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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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for 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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole

Definitions

  • the present invention relates to the field of offshore drilling, and more particularly, to weather protected offshore drilling having a drilling derrick mounted on a deck of an offshore platform, including, but not limited to drill ship or drill platform or drill rig.
  • U.S. Pat. No. 4,613,001 describes a type of derrick which is enclosed in a weather protecting cover, from which tunnels extend out over the drill deck and comprises lifting means for handling of pipes and tubes between the drill deck and an underlying main deck.
  • This type of drilling derrick is restricted to conventional truss or framework structured derricks providing a heavy and bulky construction for the offshore drilling.
  • the present invention relates to the field of weather protected drilling derricks for offshore drilling providing for weather protected storage, handling and working area within the drilling derrick. More specifically, the present invention relates to a solution with stressed-skin structure where weather protection and load carrying structure is combined in the external enclosure forming the drilling derrick. It is desirable to provide relatively light-weight and relatively non-bulky and compact drilling derrick constructions having weather protected storage, handling and working area.
  • the object of the present invention is to suggest an improved and easy to implement drilling derrick for offshore drilling which improves the working and storage environment for drilling operations and reduces the weight of the drilling derrick.
  • an aspect of the present invention is to provide an improved solution of a drilling derrick construction which seeks to mitigate, alleviate, or eliminate one or more of the above-identified deficiencies in the art and disadvantages singly or in any combination.
  • a drilling derrick for offshore drilling operations arranged to be a protecting enclosure accommodating a drill pipe device adapted to perform drilling operations and allowing a pipe section to be moved in and out of the drilling derrick, the drilling derrick accommodating a pipe racking structure for stacking and retaining pipe sections for use in drilling operations, the drilling derrick is adapted to be mounted on a deck, characterised in that the drilling derrick comprising a stressed-skin structure having external load carrying panels.
  • the drilling derrick is a relatively light-weight construction. Since the drilling derrick is a stressed-skin structure construction it enables a flexible construction which can be adapted to be shaped such that the effect of wind forces acting on the drilling derrick can be reduced.
  • the external load carrying panels are external stiffened panels comprising of outer plating skins reinforced by inner vertical stiffeners and inner horizontal rib members in a substantially rectangular pattern, wherein the stressed-skin structure will provide the support load carrying structure for loads acting on the drilling derrick, and the stressed-skin structure will simulataneously provide weather protection.
  • the external load carrying panels are external corrugated panels comprising of corrugated plates having vertical corrugations and horizontal rib members, wherein the stressed-skin structure will provide the support load carrying structure for loads acting on the drilling derrick.
  • the drilling derrick comprises closable openings for transferring items, such as for example drill pipes and other drilling equipment, in and out of the drilling derrick.
  • the drilling derrick is positioned upon the deck of an offshore platform, such as a drillship or drilling rig or drilling platform.
  • the drilling derrick has a substantially rectangular horizontal cross section.
  • the horizontal cross section has a surface which may vary in size over the height of the drilling derrick.
  • a flexible construction is provided with the stressed-skin drilling derrick which may be of any type of suitable geometrical form.
  • the drilling derrick can provide a relatively large area within the drilling derrick while at the same time providing a relatively compact and non-bulky drilling derrick.
  • the substantially rectangular horizontal cross section of the drilling derrick may vary in size over the height of the drilling derrick, from a bottom part of the drilling derrick supported on the deck to a top part of the drilling derrick.
  • the cross section of the top part of the drilling derrick is smaller than the cross section of the bottom part of the drilling derrick.
  • the cross section surface may vary in size from the top part to the bottom part of the drilling derrick.
  • corners of the drilling derrick may be rounded.
  • the drilling derrick has a substantially round or elliptical horizontal cross section.
  • the substantially round or elliptical horizontal cross section of the drilling derrick may vary in size over the height of the drilling derrick, from a bottom part of the drilling derrick supported on the deck to a top part of the drilling derrick.
  • the cross section of the top part of the drilling derrick having a substantially round or elliptical horizontal cross section is smaller than the cross section of the bottom part of the drilling derrick.
  • the drilling derrick comprises outward extending stiffened panels at a lower part of the drilling derrick where a cross section surface of the lower part is at least 50 percent larger than the largest cross section surface of the upper part of the drilling derrick, such that a larger enclosed area above the deck is provided.
  • the stiffened panels can be arranged to provide the enlarged lower part.
  • the lower part of the drilling derrick is arranged to correspond with structures below the deck, i.e. the main load-bearing structures of the offshore platform.
  • a raised drill floor is arranged and integrated in the drilling derrick above the deck.
  • the drilling derrick may provide for structural continuity where the loads acting on the drilling derrick, such as for example loads caused by drilling operations and/or wind forces, may be distributed in a suitable manner.
  • the integrated raised drill floor may provide for more space above the deck.
  • an offshore platform comprises at least one drilling derrick. According to a further advantageous aspect of the invention, an offshore platform comprises two drilling derricks.
  • FIG. 1 schematically shows a pictorial representation of a stressed-skin drilling derrick according to the invention.
  • FIG. 2 schematically shows a pictorial representation of a stiffened panel according to the invention.
  • FIG. 3 schematically shows a pictorial representation of a stressed-skin drilling derrick having an enlarged lower part according to the invention.
  • FIG. 4 schematically shows a pictorial representation of stressed-skin drilling derrick having an integrated drill floor structure according to the invention.
  • FIGS. 1 to 4 are schematically illustrated.
  • the following examples of the present invention relate, in general, to the field of offshore drilling in particularly, to offshore drilling using drilling derricks for weather protected drilling operations.
  • FIG. 1 show an example of an inventive stressed-skin drilling derrick 1 mounted on a deck 2 , wherein the drilling derrick 1 is a welded load-bearing unitary construction.
  • the drilling derrick 1 comprises a plurality of stiffened panels 3 which are respectively attached to the opposing edges 4 of adjacent external stiffened panels or adjacent structural sections which may constitute part of the drilling derrick 1 .
  • the drilling derrick 1 may either fully or partly comprise of stiffened panels 3 .
  • the drilling derrick 1 may vary in size over the height of the drilling derrick 1 , from a bottom part 9 of the drilling derrick 1 supported on the deck 2 to a top part 10 of the drilling derrick 1 .
  • the drilling derrick 1 is arranged to accommodate any suitable equipments for drilling operations, such as for example a drill pipe device (not shown), pipe sections (not shown) and a pipe racking structure (not shown).
  • the drilling derrick 1 comprises closable openings (not shown).
  • the drilling derrick 1 may be adapted to provide a relatively large working, handling and storage area inside the drilling derrick 1 .
  • the stressed-skin construction technique which is used in the inventive drilling derrick 1 supports structural loads by using the exterior or shell of the drilling derrick 1 , as opposed to using a conventional drilling derrick having a load-bearing frame or truss which is then covered with a non-load-bearing skin or coachwork.
  • the stiffened panels 3 constitute the exterior or shell of the drilling derrick 1 .
  • FIG. 2 schematically shows a pictorial representation of a stiffened panel 3 according to the invention.
  • the external stiffened panel 3 comprises an outer plating skin 7 reinforced by inner vertical stiffeners 5 and inner horizontal rib members 6 in a substantially rectangular pattern 8 .
  • the inner vertical stiffeners 5 and inner horizontal rib members 6 may be mounted and connected to the outer plating skin 7 by any conventional method such as welding, screwing, riveting or bolting.
  • the inner vertical stiffeners 5 and inner horizontal rib members 6 are mounted and connected to the outer plating skin 7 and to each other by welding.
  • the inventive drilling derrick 1 is mounted as a unitary construction on the deck 2 of an offshore platform, the inner horizontal rib members 6 are horizontal and the inner vertical stiffners 5 are substantially vertical.
  • the inner vertical stiffeners 5 and the inner horizontal rib members 6 may be any type of structural member such as for example HP-bulb profile, L-profile, Flat bar profile, Trapetzoid-profile, Box-profile, U-profile or T-profile.
  • the inner vertical stiffeners 5 and the inner horizontal rib members 6 in a stiffened panel 3 may be of different types structural members.
  • the inner vertical stiffeners 5 and the inner horizontal rib members 6 in a stiffened panel 3 may be the same type of structural member.
  • the stiffened panels 3 which are used in the stressed-skin structure of the drilling derrick provide a type of construction in which the outer plating skins 7 and the inner vertical stiffeners 5 and inner horizontal rib members 6 interact, thus contributing to the overall strength of the drilling derrick.
  • the stiffened panels 3 can be mounted and connected to each other by any conventional method such as for example welding, screwing, riveting or bolting. Preferably, the stiffened panels 3 are mounted and connected to each other by welding.
  • the stiffened panel 3 may comprise of any suitable number of inner vertical stiffeners 5 .
  • the stiffened panel 3 may comprise of any suitable number of inner horizontal rib members 6 . Normally, the stiffened panel comprise of more inner vertical stiffeners 5 than inner horizontal rib members 6 .
  • the inner vertical stiffeners 5 and the horizontal rib members 6 are arranged to be mounted and connected to each other at inner crossing sections 11 .
  • the inner vertical stiffeners 5 and inner horizontal rib members 6 are arranged in the rectangular pattern 8 having inner crossing sections 11 , where either the inner vertical stiffeners 5 or the horizontal rib members 6 may be mounted and connected to each other and arranged through each other at the inner crossing sections 11 .
  • the connection of the inner vertical stiffeners 5 and inner horizontal rib members 6 at the inner crossing sections 11 may be done by using any conventional method such as for example welding, screwing, riveting or bolting.
  • the inner vertical stiffeners 5 and the horizontal rib members 6 are mounted and connected to each other by welding.
  • the stiffened panel 3 comprising the outer plating skin 7 , the inner vertical stiffeners 5 and the inner horizontal rib members 6 can be made of any suitable material.
  • the stiffened panels 3 can be arranged to be connected to each other forming any suitable geometrical form, for example such that wind force influence on the drilling derrick can be reduced.
  • the inventive solution can simultaneously provide both a weather protected working, handling and storage area and a non-bulky and light-weight drilling derrick which also can reduce the wind force influence on the drilling derrick.
  • FIG. 3 shows an example of a drilling derrick 31 having an enlarged lower part 32 , such that a larger enclosed working, handling and storage area above the deck 2 can be provided.
  • the drilling derrick 31 comprises extending stiffened panels 33 at a lower part 32 of the drilling derrick 31 , such that a larger enclosed area above the deck 2 is provided.
  • the lower part 32 of the drilling derrick 31 has a cross section surface which is substantially larger than the largest cross section surface of the upper part 34 of the drilling derrick 31 .
  • the lower part 32 of the drilling derrick 31 has a cross section surface which is at least 50 percent larger than the largest cross section surface of the upper part 34 of the drilling derrick 31 .
  • This drilling derrick 31 having an enlarged lower part 32 may provide a larger enclosed area above the deck 2 than if it had a continuous variation in size from the top part to the bottom part of the drilling derrick.
  • FIG. 4 shows an example of a drilling derrick 41 having a raised integrated drill floor structure 42 , such that additional working, handling and storage area can be provided at the deck 2 .
  • the raised drill floor 42 is arranged above the deck 2 on which the drilling derrick 41 is mounted.
  • the drilling derrick according to the invention may be used in any type appropriate drilling operation.
  • Several drilling derricks according to the invention may be provided on the deck of an offshore platform.
  • the drilling derrick may be a multiple activity drilling derrick providing accommodation for multiple drilling pipe devices, pipe section and pipe racks.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
US14/125,495 2011-06-16 2012-06-13 Drilling derrick for offshore drilling incorporating a stressed-skin and offshore platform Abandoned US20140130440A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE1150544A SE537320C2 (sv) 2011-06-16 2011-06-16 Borrtorn med förstyvat skal samt havsplattform
SE1150544-3 2011-06-16
PCT/SE2012/050639 WO2012173559A1 (en) 2011-06-16 2012-06-13 Drilling derrick for offshore drilling incorporating a stressed-skin and offshore platform

Publications (1)

Publication Number Publication Date
US20140130440A1 true US20140130440A1 (en) 2014-05-15

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US14/125,495 Abandoned US20140130440A1 (en) 2011-06-16 2012-06-13 Drilling derrick for offshore drilling incorporating a stressed-skin and offshore platform

Country Status (5)

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US (1) US20140130440A1 (sv)
NO (1) NO346175B1 (sv)
RU (1) RU2597344C2 (sv)
SE (1) SE537320C2 (sv)
WO (1) WO2012173559A1 (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015006339A1 (en) * 2013-07-10 2015-01-15 Shell Oil Company Blast, fire, and hydrocarbon capture and protection systems

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US2248051A (en) * 1938-12-28 1941-07-08 Sun Oil Co Offshore drilling rig
US2299614A (en) * 1940-02-08 1942-10-20 Deutsch Maurice Structural unit
US2395205A (en) * 1941-03-11 1946-02-19 Budd Edward G Mfg Co Aircraft structure
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US20090057011A1 (en) * 2007-04-02 2009-03-05 Inge Petersson Drilling device
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US2248051A (en) * 1938-12-28 1941-07-08 Sun Oil Co Offshore drilling rig
US2299614A (en) * 1940-02-08 1942-10-20 Deutsch Maurice Structural unit
US2395205A (en) * 1941-03-11 1946-02-19 Budd Edward G Mfg Co Aircraft structure
US2437186A (en) * 1944-05-27 1948-03-02 Carnegie Illinois Steel Corp Grating and method of making the same
US2873581A (en) * 1954-08-16 1959-02-17 Raymond Int Inc Marine platform
US2995900A (en) * 1954-10-25 1961-08-15 William A Hunsucker Portable marine structure
US2804951A (en) * 1955-07-11 1957-09-03 Wonderly Construction Company Well rig cover
US3127960A (en) * 1958-09-24 1964-04-07 Smith Charles Aquila Vincent Panel systems
US3429128A (en) * 1967-04-21 1969-02-25 Chicago Bridge & Iron Co Offshore storage structure
US3499498A (en) * 1968-03-11 1970-03-10 Kendrick Cattle Co Pipe racking and transfer assembly
US3577862A (en) * 1968-07-12 1971-05-11 Blaw Knox Co Composite precompressed grating structure
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US4081087A (en) * 1976-01-21 1978-03-28 Freeman Sr Richard B Pipe laydown and pickup machine
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US4441283A (en) * 1982-06-23 1984-04-10 Horst Witt Steeple
US4627767A (en) * 1983-07-22 1986-12-09 Santa Fe International Corporation Mobile sea barge and platform
US4613001A (en) * 1983-09-21 1986-09-23 Gotaverken Arendal Ab Weather protected offshore drilling rig
US5749198A (en) * 1986-04-07 1998-05-12 Ebert Composites Corporation Tapered composite elevated support structure
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US6085851A (en) * 1996-05-03 2000-07-11 Transocean Offshore Inc. Multi-activity offshore exploration and/or development drill method and apparatus
US6415581B1 (en) * 2000-07-17 2002-07-09 Deck West, Incorporated Corrugated stiffening member
US20020081415A1 (en) * 2000-12-22 2002-06-27 Yasuhiro Toi Composite material-stiffened panel and manufacturing method thereof
US20080103740A1 (en) * 2006-10-31 2008-05-01 Airbus Espana, S.L. Process for optimizing the structural design of a stiffened composite material panel
US20090057011A1 (en) * 2007-04-02 2009-03-05 Inge Petersson Drilling device
US7628225B2 (en) * 2007-04-02 2009-12-08 Gva Consultants Ab Drilling device
US20090005232A1 (en) * 2007-06-28 2009-01-01 The Boeing Company Composite Structures having Reinforced Edge Bonded Joints and Method for Making the Same
US20090272540A1 (en) * 2008-04-30 2009-11-05 Mary B. Dimmitt Mobile hydraulic workover rig
US20100192504A1 (en) * 2008-07-09 2010-08-05 General Electric Company Spaceframe nacelle for a wind turbine generator and method of manufacturing the spaceframe nacelle
US8336273B2 (en) * 2009-04-07 2012-12-25 The Board Of Regents For Oklahoma State University Rainscreen attachment system
US20120245862A1 (en) * 2009-09-14 2012-09-27 Airbus Operations (S.A.S.) Method for the structural analysis of panels consisting of an isotropic material and stiffened by triangular pockets
US20110315824A1 (en) * 2010-06-25 2011-12-29 The Boeing Company Composite structures having integrated stiffeners and method of making the same
US20120052247A1 (en) * 2010-06-25 2012-03-01 The Boeing Company Composite structures having integrated stiffeners with smooth runouts and method of making the same

Also Published As

Publication number Publication date
NO346175B1 (no) 2022-04-04
NO20140017A1 (no) 2014-01-08
SE1150544A1 (sv) 2012-12-17
RU2597344C2 (ru) 2016-09-10
WO2012173559A1 (en) 2012-12-20
RU2014101162A (ru) 2015-07-27
SE537320C2 (sv) 2015-04-07

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