US3844127A - Floating drilling platform with quick disconnect legs - Google Patents

Floating drilling platform with quick disconnect legs Download PDF

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Publication number
US3844127A
US3844127A US00358670A US35867073A US3844127A US 3844127 A US3844127 A US 3844127A US 00358670 A US00358670 A US 00358670A US 35867073 A US35867073 A US 35867073A US 3844127 A US3844127 A US 3844127A
Authority
US
United States
Prior art keywords
joint
female member
locking
leg
annular groove
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.)
Expired - Lifetime
Application number
US00358670A
Other languages
English (en)
Inventor
F Koop
J Woods
K Farmer
W Harbin
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.)
Marathon Manufacturing Co
Original Assignee
Marathon Manufacturing Co
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 Marathon Manufacturing Co filed Critical Marathon Manufacturing Co
Priority to US00358670A priority Critical patent/US3844127A/en
Priority to CA186,241A priority patent/CA984162A/en
Priority to DK627273A priority patent/DK143259C/da
Priority to GB5482473A priority patent/GB1422667A/en
Priority to NL7316113.A priority patent/NL156471B/xx
Priority to ES421408A priority patent/ES421408A1/es
Priority to NO4822/73A priority patent/NO137560C/no
Priority to FI3971/73A priority patent/FI55381C/fi
Priority to JP49004793A priority patent/JPS509201A/ja
Priority to IT54682/73A priority patent/IT1002582B/it
Priority to FR7400043A priority patent/FR2228659B1/fr
Priority to SE7400481A priority patent/SE391957B/xx
Priority to DE19742403046 priority patent/DE2403046C3/de
Priority to AU64789/74A priority patent/AU460678B2/en
Application granted granted Critical
Publication of US3844127A publication Critical patent/US3844127A/en
Priority to HK6/77A priority patent/HK677A/xx
Priority to JP1978149087U priority patent/JPS5634036Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
    • E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0004—Nodal points
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/06—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for immobilising, e.g. using wedges or clamping rings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/006—Platforms with supporting legs with lattice style supporting legs
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0073—Details of sea bottom engaging footing
    • E02B2017/0082—Spudcans, skirts or extended feet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/69—Redundant disconnection blocking means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32975—Rotatable
    • Y10T403/32983—Rod in socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7018—Interfitted members including separably interposed key
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer
    • Y10T403/7077—Interfitted members including discrete retainer for telescoping members
    • Y10T403/7079—Transverse pin

Definitions

  • leg sections may obviously be accomplished in various ways, such as by a releasable connecting joint for each leg, an example of which is shown in US. Pat. No. 3,628,336.
  • the present invention relates to a new and improved quick disconnect structural joint for a drilling platform having sectioned legs, wherein all of the vertical and lateral loads on the joint are distributed to and taken by the male and female joint members rather than the weaker connecting elements of the joint, except for the relatively small vertical forces exerted on the connecting elements when moving the legs upwardly relative to the platform. Additionally, the joint is more readily separable and connectable than prior known joints which is important in view of the magnitude of the legs and each joint and the consequent handling difficulties.
  • FIG. I is a schematic diagram showing the drilling platform with its legs lowered in the operating or working position
  • FIG. 2 is a schematic diagram of one corner of the said drilling platform showing one leg raised and the removable section shown in broken lines;
  • FIG. 3 is a vertical section of the pin and box joint of this invention.
  • FIG. 4 is a sectional view taken across one of the joints of the leg along line 4-4 in FIG. 3.
  • the floating drilling platform 10 carries a plurality of legs 12 which are adapted to be raised and lowered through the drilling platform 10 by a suitable jacking means (not shown).
  • the legs 12 generally have a base 13 which contacts the land underneath the water, or bottom B, and supports the platform 10 above the surface of the water W when the platform 10 is in its working position.
  • each of the legs 12 is generally an open truss structure having three or four substantially vertically disposed tubular members 16, each of which carries a conventional rack 18 for moving each leg 12 up and down through openings in the drilling platform 10. While three legs 12 are preferred, the floating drilling platform 10 may have four or more legs 12 without departing from the scope of this invention.
  • each tubular member 16 is formed with at least one upper releasable detachable section 16a joined to a lower section 16b by a quick disconnect joint J shown in detail in FIGS. 3 and 4.
  • each open truss leg 12 has more than one tubular member 16
  • the tubular members are connected to form the open truss structure horizontal members 28, diagonal supports 30 and, in the case where a four cornered leg is contemplated, horizontal diagonal members 32, to join tubular members 16 in opposite corners of the leg 12.
  • each joint J is comprised of a pin or male member 20 and a box or female member 22 so adapted that in its locked position the annular shoulder 24 of the pin or male member 20 rests with the upper leg section 16a on the circular end surface 26 of the female member 22 to carry the compression forces exerted when the leg 12 is resting on the bottom B supporting the drilling platform 10 in its working position as shown in FIG. I.
  • the female connector 22 has on its interior surface two longitudinally displaced annular surfaces 22a and 22b of a smaller diameter than the bore 220, and with the diameter at the surface 22b being less than at the surface 22a for a purpose to be hereinafter explained.
  • annular surfaces 22a and 22b are narrow or short in length with respect to the overall length of the joint .I.
  • the length of each of the annular surfaces 22a and 22b is preferably only 2 to 3 inches and each is positioned such that they register with mating raised surfaces 20a and 20b on the external surface 200 of the male member 20 of the joint .I.
  • the upper annular surface 22a is preferably located near the open end of the female member.
  • a groove 22d preferably annular, in the female member 22 which carries identical locking segments 34, 36 and 38 and wedge guides 40 positioned to restrain any lateral movement of the locking segments 34, 36 and 38, as will be more fully explained.
  • the male member 20 of the joint has an annular groove 20d which, when the leg is connected, registers, or mates, with the groove 22d.
  • the annular groove 20d of the male member receives the locking segments 34, 36 and 38 carried in the annular groove 22d of the female member when the joint is made and placed in its locked position, as will be more evident hereinafter.
  • annular surfaces 20a and 20b on the external surface of the male member 20 bear against the annular surfaces 220 and 22b, respectively, so that any lateral forces acting on each leg 12 caused by water and/or wind against the drilling platform or legs 12 are distributed on these surfaces so as to span substantially the full length of the joint J to prevent a concentration of such forces on any one portion of the joint.
  • an O-ring 54 or other suitable seal preferably located in an annular groove 26a on the upper surface 26 of the female member 22 of the joint.
  • locking segment 34 is shown in its locked position and locking segment 36 is shown completely withdrawn, or stated differently, in its unlocked position.
  • Locking segment 38 is shown in an intermediate position being withdrawn from the annular groove d in the male member 20 by a shaft 56 operated by any suitable power means (not shown).
  • Locking segment 34 is shown being held in its locked position by a locking pin 58 which is inserted through a hole 60 through the female member 22 communicating with the annular groove 22d. At least part of said hole 60 is threaded to secure the pin 58 to hold the locking segment 34 in position.
  • each such locking segment 34, 36 and 38 is held in the locked position shown for the segment 34 by an identical or a similar pin 58.
  • the hole 60 is made water tight when the joint is connected and locked by an O-ring 62 which may be conveniently carried on the pin 58 which has external threads 58a to mate with the internal threads of the hole 60.
  • Each locking segment 34, 36 and 38 has a threaded opening 52 in alignment with the hole 60 to receive the pin 58 when in the locking position and the shaft 56 of the tool to remove the locking segment from the annular groove 20d.
  • the internal threads of the hole 52 register with the external threads of the tool shaft 56 so that the shaft 56 is attached to each locking segment 34, 36 and 38 in the manner shown in FIG. 4 for the locking segment 38 to withdraw each segment from the groove 20d and into the groove 22d, or to insert each segment from the groove 20d to the locking position spanning both of the grooves 20d, 22d.
  • Locking segment 36 is shown being held in an unlocked position by a lock-out bolt 64 in one of the holes 60, which bolt 64 has inner threads registering with the threads of the hole 52 in the locking segment 36 and outer threads in threaded engagement with threads in the hole 60.
  • Each segment may be similarly locked in the retracted position so as to be completely out of the groove 20d when the joint is to be separated and assembled.
  • the lateral extent of each of the locking segments 34, 36 and 38 is such that, when in the locked position, each extends into both grooves 22d and 20d.
  • each segment 34, 36, 38 is less than the vertical height of the groove 20d so that the upper surface of each segment, such as the upper surface 34a of the segment 34 as shown in FIG. 3 is spaced below the upper surface 20e of the groove 20d.
  • vertical downward or compression loads on each leg cannot be transmitted to the segments 34, 36, 38 which are relatively weak structurally as compared to the tubular sections 16a, 16b, and instead, such loads are taken by the legs themselves by the supporting contact at the annular surfaces 24 and 26.
  • Such segments 34, 36, 38 are thus subjected only to vertical upward or tension forces when the legs 12 are being raised relative to the platform 10, and such loads are far less than the compression loads so that they can be adequately handled by such segments without distortion or damage thereto.
  • the locking segments 34, 36 and 38 are guided and restrained from lateral movement by wedge guides 40 carried in the groove 22d and affixed to the female member 22 by any suitable means such as pins 66, inserted in holes 72 drilledthrough the female member communicating with the annular groove 22d.
  • the pins 66 may be suitably affixed to female member 22 by welding said pins into said holes 72.
  • wedge guides 40 could be formed integrally with the member 22, so that the groove 22d is actually segmentally formed to provide a slot 22' for each of the segments 34, 36, 38.
  • the wedge guides 40 have surfaces 40a and 40b facing locking segment 38 (for illustrative purposes) which face, and are substantially parallel to, each other and disposed in the direction of movement of the locking segment 38 to prevent lateral movement of locking segment 38 while said segment 38 moves into, and out of, groove 20d by contact with surfaces 38a and 38b on locking segment 38.
  • the locking segments 34, 36 and 38 are locked in the withdrawn position in the groove 22d and are so held by the locking bolts 64 as shown in FIG. 4 for the segment 36.
  • the male member 20 is inserted into the female member 22 until the shoulder 24 of said male member 20 bears upon the circular end 26 of the female member 22 and is carried and supported thereupon.
  • the annular surfaces 20a and 20b of the male member 20 register with, and bear upon, the annular surfaces 22a and 22b, respectively, of the female member 22.
  • the edges of these surfaces are preferably bevelled to allow unobstructed passage of the male member into the assembled position within the female member.
  • the lock-out bolts 64 are removed and the locking segments 34, 36 and 38 are moved by suitable power means on the shafts 56 into the annular groove 22a of the male member 22. Then, the shafts 56 are removed from the segments 34, 36, 38 and the locking pins 58 are inserted through the holes 60 and into the holes 52 without threading therein, but with the threads 58a engaging the threads in the holes 60, thus locking the male member 20 within the female member'22.
  • a particular advantage to the practice of the described invention occurs when the sections of the leg 12 are being removed after the drilling platform has ceased operations at one location and is to be moved to another.
  • the legs 12 are brought up through the drilling platform 10 by the jacking means until the joint is raised to a position where workmen have access thereto.
  • the locking pins 58 are removed and the shaft 56 of a suitable power source are inserted into the holes 60 and screwed into the threads in holes 52 in the segments 34, 36, 38 such as shown for segment 38.
  • the suitable power means then withdraws each segment 34, 36, 38 from its locked position in grooves d and 22d into its unlocked position in groove 22d of the female member 22. Each segment is then locked into the groove 22d with a lockout bolt 64 as shown for segment 36.
  • a further advantage over such prior art joints made possible by the above-described joint .l which contributes to its quick-disconnect properties is that the joint while connected can be lubricated by filling the female member 22 with a suitable lubricant, such as a heavy oil or grease, which is contained by a solid diaphram70 welded to the internal surface 22f of the female member 22 below the joint 1.
  • a suitable lubricant such as a heavy oil or grease
  • each leg having a tubular member, power means for raising and lowering said leg relative to said platform, and said leg including a removable upper section and a joint for connecting the removable section to the remaining portion of said leg; the improvement residing in said joint, comprising:
  • a male member adapted to be received by said female member having a plurality of longitudinally displaced raised annular surfaces which mate with, and bear against, the corresponding raised annular surfaces of the female member, said raised annular surfaces being narrow with respect to the longitudinal length of the joint;
  • locking means for releasably locking said male and female members together.
  • said floating drilling platform includes:
  • said male and female members having opposing annular grooves which are aligned with each other with said male member inserted in said female member, said locking means being mounted with said annular groove in said female member;
  • said other such annular surface is adjacent said annular groove in said female member.
  • an offshore drilling platform comprising a floating drilling platform, a plurality of legs mounted with 1.
  • an offshore drilling platform comprising a floating drilling platform, a plurality of legs mounted with said platform for longitudinal movement relative said platform for longitudinal movement relative thereto and each leg having a tubular member, power means for raising and lowering said leg relative to said platform, and said leg including a removable upper section and a joint for connecting the removable section to the remaining portion of said leg; the improvement residing in said joint, comprising:
  • a female member having a plurality of internal slots formed therein;
  • a male member adapted to be received by said female member and having an annular groove with nontapered faces adapted to be laterally aligned with said slots;
  • said male and female members having adjacent flat annular shoulders in abutting contact for transmitting compression loads from said upper removable section to said remaining leg portion therebelow, said flat annular shoulders being positioned to allow said locking elements to be freely moved into said male member annular groove with said nontapered faces;
  • each of said locking elements being longitudinally spaced below the supper surface of said annular groove when said shoulders are in abutting contact for thereby assuring that the compression loading on said leg is not taken by said locking segments.
  • each of said guide means has guide surfaces thereon in engagement with corresponding surfaces on each of said locking elements, and with the surfaces of each locking element being substantially parallel and disposed in the direction of movement of each element when moving to and from the retracted and locking positions.
  • said female member having a lateral opening for each of saidlocking elements
  • a lock-in pin adapted to extend through each said opening for engagement with each said element and having means for securing same to said female member for holding each said locking element in the locking position.
  • a lock-out pin adapted to extend through each said opening and having means for securing same to each said locking element aligned therewith and said female member for holding each said locking element in the retracted position.
  • seal means between said abutting shoulders to prevent fluid from leaking into said joint therebe-- tween.
  • seal means between said abutting shoulders to prevent fluid from leaking into said joint therebetween.
  • said female member and said male member have inner and outer longitudinally spaced contacting surfaces, each of a relatively short length as compared to the length of said joint.
  • the inner contacting surfaces have a smaller diameter than the outer contacting surfaces to facilitate quick disconnecting of the joint.
  • a solid diaphram attached to the inner surface of the female member below said joint to contain a lubricant in said joint.
  • a solid diaphram attached to the inner surface of the female member below said joint to contain a lubricant in said joint.
  • an offshore drilling platform comprising a floating drilling platform, a plurality of legs mounted with said platform for longitudinal movement relative thereto and each leg having a tubular member, power means for raising and lowering said leg relative to said platform, and said leg including a removable upper section and a joint for connecting the removable section to the remaining portion of said leg the improvement residing in said joint, comprising:
  • a female member having a internal, substantially annular groove formed therein;
  • a male member adapted to be received by said female member and having an annular groove adapted to be laterally aligned with said annular groove in said female member;
  • segmented locking elements in disposed said annular groove in said female member
  • each of said guide means having guide surfaces parallel to the direction of travel of said locking elements for engaging and guiding said locking elements and for supporting said locking elements against lateral movement.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Drilling And Boring (AREA)
US00358670A 1973-05-09 1973-05-09 Floating drilling platform with quick disconnect legs Expired - Lifetime US3844127A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
US00358670A US3844127A (en) 1973-05-09 1973-05-09 Floating drilling platform with quick disconnect legs
CA186,241A CA984162A (en) 1973-05-09 1973-11-20 Floating drilling platform with quick disconnect legs
DK627273A DK143259C (da) 1973-05-09 1973-11-21 Boreplatform
GB5482473A GB1422667A (en) 1973-05-09 1973-11-26 Floating drilling platform with quick disconnect legs
NL7316113.A NL156471B (nl) 1973-05-09 1973-11-26 Verbindingsinrichting voor op elkaar aansluitende pootdelen van een boorplatform.
ES421408A ES421408A1 (es) 1973-05-09 1973-12-12 Mejoras introducidas en una plataforma de perforacion en al-ta mar.
NO4822/73A NO137560C (no) 1973-05-09 1973-12-17 Flytende boreplattform.
FI3971/73A FI55381C (fi) 1973-05-09 1973-12-21 Flytande borrningsplattform med utskjutbara ben, vart och ett bestaoende av minst tvao sektioner
JP49004793A JPS509201A (it) 1973-05-09 1973-12-24
IT54682/73A IT1002582B (it) 1973-05-09 1973-12-31 Perfezionamento nelle piattaforme galleggianti per trivellazioni
FR7400043A FR2228659B1 (it) 1973-05-09 1974-01-02
SE7400481A SE391957B (sv) 1973-05-09 1974-01-15 Borrplattform
DE19742403046 DE2403046C3 (de) 1973-05-09 1974-01-23 Schwimmfähige Bohrplattform mit ausfahrbaren Säulen
AU64789/74A AU460678B2 (en) 1973-05-09 1974-01-23 Floating drilling platform with quick disconnect legs
HK6/77A HK677A (en) 1973-05-09 1977-01-06 Floating drilling platform with quick disconnect legs
JP1978149087U JPS5634036Y2 (it) 1973-05-09 1978-10-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00358670A US3844127A (en) 1973-05-09 1973-05-09 Floating drilling platform with quick disconnect legs

Publications (1)

Publication Number Publication Date
US3844127A true US3844127A (en) 1974-10-29

Family

ID=23410574

Family Applications (1)

Application Number Title Priority Date Filing Date
US00358670A Expired - Lifetime US3844127A (en) 1973-05-09 1973-05-09 Floating drilling platform with quick disconnect legs

Country Status (13)

Country Link
US (1) US3844127A (it)
JP (2) JPS509201A (it)
CA (1) CA984162A (it)
DK (1) DK143259C (it)
ES (1) ES421408A1 (it)
FI (1) FI55381C (it)
FR (1) FR2228659B1 (it)
GB (1) GB1422667A (it)
HK (1) HK677A (it)
IT (1) IT1002582B (it)
NL (1) NL156471B (it)
NO (1) NO137560C (it)
SE (1) SE391957B (it)

Cited By (16)

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US4007598A (en) * 1974-12-16 1977-02-15 Hans Tax Artificial island and method of assembling the same
US4146115A (en) * 1977-10-12 1979-03-27 The Bendix Corporation Pushrod connection between an actuator thrust rod and a brake actuating lever
DE3302516A1 (de) * 1983-01-26 1984-07-26 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Bolzenverbindung fuer rohrsaeulen von stationaeren beton-verteilermasten
US4478340A (en) * 1982-04-26 1984-10-23 American Hoist & Derrick Company Swing bearing quick removal system
US4570977A (en) * 1983-06-17 1986-02-18 Hydril Company Mechanical connector apparatus
US4799714A (en) * 1986-04-28 1989-01-24 Collet James R Sleeve type casing head adapter
US4844184A (en) * 1988-09-29 1989-07-04 Acker Drill Co., Inc. Lock device for hollow stem augers
US5190410A (en) * 1990-10-31 1993-03-02 Nunley Dwight S Conversion of mat jack-up drilling platforms to floating drilling platforms
US5494367A (en) * 1993-12-09 1996-02-27 Epkens; Heiko Harsh environment line swivel
US5529421A (en) * 1993-10-22 1996-06-25 Dcd Design & Manufacturing Ltd. Harsh environment swivel
US5951066A (en) * 1998-02-23 1999-09-14 Erc Industries, Inc. Connecting system for wellhead components
US7516991B1 (en) * 2008-05-20 2009-04-14 Donell Optronics Co., Ltd. Pipework with a fastening device
WO2014044253A1 (de) * 2012-09-18 2014-03-27 Rolf Rohden Schwimmkörperhubstelzensegment zum heben von schiffen oder plattformen sowie schwimmkörper
CN104802947A (zh) * 2014-12-09 2015-07-29 中集海洋工程研究院有限公司 自升式平台及其水平锁紧装置
CN115247412A (zh) * 2021-04-27 2022-10-28 段诺 设可分步拆卸的裙式桩靴的海上自升式钻井平台
US11668063B2 (en) * 2016-10-18 2023-06-06 Asahi Kasei Construction Materials Corporation Steel pipe coupling device for steel pipes

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Publication number Priority date Publication date Assignee Title
US4576518A (en) * 1984-02-22 1986-03-18 Epi Resources Ltd. Fixed/movable marine structure system
IT1230186B (it) * 1989-04-18 1991-10-18 Snam Progetti Piattaforma isola offshore a piu' elementi componibili per lo stoccaggio, l'attracco e il caricamento diretto di navi e procedimento per la sua installazione, rimozione e rilocazione.
GB2332256B (en) * 1997-12-05 2002-01-16 Britannia Engineering Consulta Tubular connection
GB201206460D0 (en) * 2012-04-12 2012-05-30 Claxton Engineering Services Ltd Pinning of a multi-walled structure

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US3628336A (en) * 1969-04-28 1971-12-21 Offshore Co Drilling platform

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US3345087A (en) * 1964-06-18 1967-10-03 Ventura Company Conduit connectors
US3455578A (en) * 1967-01-03 1969-07-15 Ventura Tool Co Fluid pressure releasable automatic tool joint
US3628336A (en) * 1969-04-28 1971-12-21 Offshore Co Drilling platform

Cited By (18)

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Publication number Priority date Publication date Assignee Title
US4007598A (en) * 1974-12-16 1977-02-15 Hans Tax Artificial island and method of assembling the same
US4146115A (en) * 1977-10-12 1979-03-27 The Bendix Corporation Pushrod connection between an actuator thrust rod and a brake actuating lever
US4478340A (en) * 1982-04-26 1984-10-23 American Hoist & Derrick Company Swing bearing quick removal system
DE3302516A1 (de) * 1983-01-26 1984-07-26 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Bolzenverbindung fuer rohrsaeulen von stationaeren beton-verteilermasten
US4570977A (en) * 1983-06-17 1986-02-18 Hydril Company Mechanical connector apparatus
US4799714A (en) * 1986-04-28 1989-01-24 Collet James R Sleeve type casing head adapter
US4844184A (en) * 1988-09-29 1989-07-04 Acker Drill Co., Inc. Lock device for hollow stem augers
US5190410A (en) * 1990-10-31 1993-03-02 Nunley Dwight S Conversion of mat jack-up drilling platforms to floating drilling platforms
US5529421A (en) * 1993-10-22 1996-06-25 Dcd Design & Manufacturing Ltd. Harsh environment swivel
US5494367A (en) * 1993-12-09 1996-02-27 Epkens; Heiko Harsh environment line swivel
US5951066A (en) * 1998-02-23 1999-09-14 Erc Industries, Inc. Connecting system for wellhead components
US7516991B1 (en) * 2008-05-20 2009-04-14 Donell Optronics Co., Ltd. Pipework with a fastening device
WO2014044253A1 (de) * 2012-09-18 2014-03-27 Rolf Rohden Schwimmkörperhubstelzensegment zum heben von schiffen oder plattformen sowie schwimmkörper
CN104802947A (zh) * 2014-12-09 2015-07-29 中集海洋工程研究院有限公司 自升式平台及其水平锁紧装置
CN104802947B (zh) * 2014-12-09 2017-05-03 中集海洋工程研究院有限公司 自升式平台及其水平锁紧装置
US11668063B2 (en) * 2016-10-18 2023-06-06 Asahi Kasei Construction Materials Corporation Steel pipe coupling device for steel pipes
CN115247412A (zh) * 2021-04-27 2022-10-28 段诺 设可分步拆卸的裙式桩靴的海上自升式钻井平台
CN115247412B (zh) * 2021-04-27 2023-08-08 段诺 设可分步拆卸的裙式桩靴的海上自升式钻井平台

Also Published As

Publication number Publication date
DK143259C (da) 1981-11-30
NL7316113A (it) 1974-11-12
ES421408A1 (es) 1977-01-01
HK677A (en) 1977-01-14
FR2228659A1 (it) 1974-12-06
DK143259B (da) 1981-08-03
SE391957B (sv) 1977-03-07
NO137560B (no) 1977-12-05
JPS5474102U (it) 1979-05-26
JPS5634036Y2 (it) 1981-08-12
JPS509201A (it) 1975-01-30
FI55381B (fi) 1979-03-30
FI55381C (fi) 1979-07-10
DE2403046B2 (de) 1976-05-06
DE2403046A1 (de) 1974-11-21
NO137560C (no) 1978-03-15
AU6478974A (en) 1975-05-01
NL156471B (nl) 1978-04-17
IT1002582B (it) 1976-05-20
GB1422667A (en) 1976-01-28
CA984162A (en) 1976-02-24
FR2228659B1 (it) 1976-11-26

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