US3343372A - Drilling platform - Google Patents

Drilling platform Download PDF

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Publication number
US3343372A
US3343372A US456084A US45608465A US3343372A US 3343372 A US3343372 A US 3343372A US 456084 A US456084 A US 456084A US 45608465 A US45608465 A US 45608465A US 3343372 A US3343372 A US 3343372A
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US
United States
Prior art keywords
platform
columns
drilling
drilling platform
column
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
US456084A
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English (en)
Inventor
Smulders August Hendrik Maria
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.)
Nv Werf Gusto V/h A F Smulders Firma
WERF GUSTO V H A F SMULDERS FA
Original Assignee
WERF GUSTO V H A F SMULDERS FA
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 WERF GUSTO V H A F SMULDERS FA filed Critical WERF GUSTO V H A F SMULDERS FA
Application granted granted Critical
Publication of US3343372A publication Critical patent/US3343372A/en
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
    • E02B17/02—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
    • 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
    • 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

Definitions

  • the present invention relates to drilling platforms and the like, more particularly of the type in which a buoyant platform is provided with a number of columns movable vertically relative to the platform and adapted to be fixed in vertically adjusted positions.
  • Drilling platforms of this type have been devised in the past.
  • such a drilling platform is provided with three columns or legs, by means of which the drilling platform can stand on the oceanfloor. It is also known to provide drilling platforms with four columns or legs mounted at the corners of a rectangle. Also, it is known to provide such platforms with six or eight columns, arranged in groups of three or four along the sides of a rectangle.
  • drilling platforms as heretofore conceived have all suffered from certain disadvantages.
  • a platform with three columns presents difliculties when the soil underneath one column washes away, as the drilling platform will then lean over and may even topple and be lost.
  • the load on one column cannot be increased as desired unless the column in question is ballasted; and this ballasting is a complicated operation. This is true because the load imposed on any one column by a platform supported by three columns tends automatically to be equally distributed among the three.
  • a drilling platform having four columns is undesirable.
  • the weight which is borne by two diagonally opposite columns can be increased by decreasing the load on the other two diagonally opposite columns.
  • the platform will thereupon assume an unstable position.
  • such a distribution is not even theoretrically possible unless the center of gravity of the platform is in the center of the platform; and this is seldom, if ever, the case.
  • an unstable equilibrium may also be produced if the load is largely supported by the column from beneath which the soil has been washed away.
  • drilling platforms with six or eight columns are characterized by certain disadvantages. Specifically, when a column in one of the corners loses its subjacent support, then certain conditions of wind loading or wave loading can cause the next column, on the same side as the unsupported column, to bear much more than its intended load. Thus, when wind or wave load is applied perpendicular to the line that extends diagonally between the two corners of the rectangle which are nearest to the vertex where the soil has been washed away, then the next column in the line is quite near that diagonal line and bears a very high load.
  • FIGURE 1 is a somewhat diagrammatic plan view of a drilling platform according to the present invention.
  • FIGURE 2 is a side elevational view of a drilling platform according to the present invention.
  • the present invention comprises the discovery that the above objects can be achieved by providing a drilling platform having five columns or legs, which are disposed in the corners of a substantially equilateral pentagon.
  • the drilling platform itself is also pentagonal and substantially congruent with the pentagon whose vertices are marked by the columns or legs.
  • a drilling platform comprised of a platform 1 which is in the form of a pontoon having positive buoyancy when the entire assembly is supported on the water, so that the drilling platform of the present invention may be floated from place to place as desired when its columns or legs are suitably raised.
  • Platform 1 is in the form of a substantially equilateral pentagon as viewed in plan.
  • each of the five corners of platform 1 there is provided an opening through each of which one of the vertical columns or legs 2, 3, 4, 5 and 6 extends.
  • each of legs 2, 3, 4, 5 and 6 is vertical.
  • a framework 7 is mounted on the upper side of platform 1 adjacent each opening through which one of the columns extends.
  • Each frame 7 provides a vertical guideway for the vertical movement of the associated column.
  • Each frame 7 also carries means 8 for moving the associated column vertically relative to platform 1, and means 9 for selectively fixing the vertically adjusted position of the associated column relative to platform 1.
  • These means comprise, in one embodiment, conventional teeth cooperating with locking bars, and jacks for the actuation of the moving parts, as shown in a number of earlier patents, among them my US. Patent No. 3,056,585, Oct. 2, 1962.
  • a drilling platform or the like comprising a buoyant platform, five vertical supporting columns disposed in the corners of a substantially equilateral pentagon, and means mounting the columns for vertical sliding movement relative to the platform.
  • a drilling platform as claimed in claim 1 the platform being in the form of a pentagon with the columns disposed in the corners of the pentagon.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (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)
  • Earth Drilling (AREA)
US456084A 1964-05-15 1965-05-17 Drilling platform Expired - Lifetime US3343372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6405458A NL6405458A (enrdf_load_stackoverflow) 1964-05-15 1964-05-15

Publications (1)

Publication Number Publication Date
US3343372A true US3343372A (en) 1967-09-26

Family

ID=19790087

Family Applications (1)

Application Number Title Priority Date Filing Date
US456084A Expired - Lifetime US3343372A (en) 1964-05-15 1965-05-17 Drilling platform

Country Status (3)

Country Link
US (1) US3343372A (enrdf_load_stackoverflow)
DE (1) DE1634501A1 (enrdf_load_stackoverflow)
NL (1) NL6405458A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443543A (en) * 1966-03-03 1969-05-13 Inst Francais Du Petrole Semi-submersible floating structure of high stability
JPS4930921B1 (enrdf_load_stackoverflow) * 1970-07-30 1974-08-17
USD270907S (en) 1981-07-06 1983-10-11 Younes David T Self-elevating line testing vessel for offshore oil lines or the like
USD271098S (en) 1981-06-18 1983-10-25 Younes David T Self-elevating well servicing vessel for offshore oil wells or the like
US4657438A (en) * 1986-01-10 1987-04-14 Gillis Don A Advancing mechanism and system utilizing same for raising and lowering a work platform
EP1472431A4 (en) * 2002-05-08 2005-12-07 Anadarko Petroleum Corp METHOD AND SYSTEM FOR CONSTRUCTING MODULAR BUILT-ON STRUCTURES FROM WHICH ARE OILED FROM OIL AND GAS BORE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906100A (en) * 1955-05-16 1959-09-29 De Long Corp Method of operating portable marine structure
US2959016A (en) * 1957-10-21 1960-11-08 Jersey Prod Res Co Offshore apparatus and method of installing same
US3171259A (en) * 1960-09-30 1965-03-02 Universal Drilling Company Inc Offshore drilling barge
US3195313A (en) * 1962-10-08 1965-07-20 Dravo Corp Offshore drilling platform
US3246476A (en) * 1963-12-05 1966-04-19 Kerr Mc Gee Oil Ind Inc Submersible vessel for submarine operations

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906100A (en) * 1955-05-16 1959-09-29 De Long Corp Method of operating portable marine structure
US2959016A (en) * 1957-10-21 1960-11-08 Jersey Prod Res Co Offshore apparatus and method of installing same
US3171259A (en) * 1960-09-30 1965-03-02 Universal Drilling Company Inc Offshore drilling barge
US3195313A (en) * 1962-10-08 1965-07-20 Dravo Corp Offshore drilling platform
US3246476A (en) * 1963-12-05 1966-04-19 Kerr Mc Gee Oil Ind Inc Submersible vessel for submarine operations

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443543A (en) * 1966-03-03 1969-05-13 Inst Francais Du Petrole Semi-submersible floating structure of high stability
JPS4930921B1 (enrdf_load_stackoverflow) * 1970-07-30 1974-08-17
USD271098S (en) 1981-06-18 1983-10-25 Younes David T Self-elevating well servicing vessel for offshore oil wells or the like
USD270907S (en) 1981-07-06 1983-10-11 Younes David T Self-elevating line testing vessel for offshore oil lines or the like
US4657438A (en) * 1986-01-10 1987-04-14 Gillis Don A Advancing mechanism and system utilizing same for raising and lowering a work platform
EP1472431A4 (en) * 2002-05-08 2005-12-07 Anadarko Petroleum Corp METHOD AND SYSTEM FOR CONSTRUCTING MODULAR BUILT-ON STRUCTURES FROM WHICH ARE OILED FROM OIL AND GAS BORE
US20060157275A1 (en) * 2002-05-08 2006-07-20 Kadaster Ali G Method and system for building modular structures from which oil and gas wells are drilled
US20100143044A1 (en) * 2002-05-08 2010-06-10 Kadaster Ali G Method and System for Building Modular Structures from Which Oil and Gas Wells are Drilled

Also Published As

Publication number Publication date
NL6405458A (enrdf_load_stackoverflow) 1965-11-16
DE1634501A1 (de) 1971-10-14

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