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Title: Offshore drilling platform protection device

Abstract

A description is given of an offshore drilling platform protection device for use on an offshore oil well drilling vessel including a drilling platform supportable on a plurality of extendable legs wherein each leg is moved by a rack gear assembly. The rack gear assembly includes an otherwise exposed first gear which engages a second gear positioned in a housing having a rectangular corner opening through which the first gear extends, the protection device including first and second protective sections adapted for mounting over the first gear adjacent to the rectangular corner of the housing for the second gear, the first and second protective sections cooperating to provide an l-shaped opening which communicates with the opening at the second gear housing for protecting the first gear while allowing the first gear to mesh with the second gear.

Inventors:
Publication Date:
OSTI Identifier:
5687532
Patent Number(s):
US 4305686
Assignee:
Atwood Oceanics Inc IFI; EDB-82-058601
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 7 Dec 1979; Other Information: PAT-APPL-101135
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 02 PETROLEUM; OFFSHORE PLATFORMS; SAFETY ENGINEERING; DESIGN; GEARS; OFFSHORE DRILLING; OIL WELLS; DRILLING; ENGINEERING; MACHINE PARTS; WELLS; 423000* - Engineering- Marine Engineering- (1980-); 020300 - Petroleum- Drilling & Production

Citation Formats

Magill, J.M. Offshore drilling platform protection device. United States: N. p., 1981. Web.
Magill, J.M. Offshore drilling platform protection device. United States.
Magill, J.M. 1981. "Offshore drilling platform protection device". United States. doi:.
@article{osti_5687532,
title = {Offshore drilling platform protection device},
author = {Magill, J.M.},
abstractNote = {A description is given of an offshore drilling platform protection device for use on an offshore oil well drilling vessel including a drilling platform supportable on a plurality of extendable legs wherein each leg is moved by a rack gear assembly. The rack gear assembly includes an otherwise exposed first gear which engages a second gear positioned in a housing having a rectangular corner opening through which the first gear extends, the protection device including first and second protective sections adapted for mounting over the first gear adjacent to the rectangular corner of the housing for the second gear, the first and second protective sections cooperating to provide an l-shaped opening which communicates with the opening at the second gear housing for protecting the first gear while allowing the first gear to mesh with the second gear.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1981,
month =
}
  • This patent describes a substantially neutrally buoyant marine petroleum storage and handing facility comprising: (a) an elongated submersible storage vessel having side wall means, bottom wall means and top wall means and defining at least one internal chamber located within the side wall means and between the top and bottom wall means. The elongated submersible storage vessel is positionable with the top wall means at a preselected depth relative to means sea level; (b) sea water inlet means located at one of the side wall means and bottom wall means and being normally open permitting unrestricted ingress and egress ofmore » sea water into the lower portion of the elongated submergible storage vessel; and (c) oil/water interface means being movably positioned within the internal chamber and partitioning the internal chamber into a variable volume sea water chamber at the lower portion of the internal chamber and a variable volume oil and gas chamber above the oil/water interface means.« less
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  • A submersible offshore jacket assembly is described comprising: elongated pilings having a first diameter; sleeves of a diameter greater than the first diameter and associated with each piling in surrounding relationship thereto. The sleeves are aligned longitudinally on the pilings; the longitudinally aligned sleeves being spaced longitudinally from the next adjacent longitudinally aligned sleeves on the pilings; top horizontal braces secured to and extending between the uppermost longitudinally aligned sleeves on the pilings; bottom horizontal braces secured to and extending between the lowermost longitudinally aligned sleeves on the pilings; a diagonal braces arrangement between the longitudinally spaced longitudinally aligned sleevesmore » from the top to the bottom horizontal brace, vertical brace adjacent and extending parallel to each of the pilings and secured to one of the diagonal braces extending between adjacent, longitudinally aligned and longitudinally spaced sleeves; each of the pilings including a flood valve at the lower end thereof for flooding the interior of each of the pillings to thereby sink the assembly to the bottom of a submerged surface; a reach rod within of the pilings connected to the flood valve and accessible at the upper end of each of the pilings for actuating and de-actuating the flood valve; and means to introduce grout into each of the sleeves to secure the longitudinally spaced sleeves in position along the pilings in longitudinally spaced relation.« less
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  • A conductor guide assembly for conductors of an offshore well platform having a jacket with an interior pile for extending from a sea bed to above a water level which is over the sea bed. In accordance with one inventive feature, a first guide mechanism comprising a plurality of vertically spaced supports which hold the tubular conduits within the interior pile is assembled in a plurality of sections wherein the upper support of each section is provided with removable bolt-on units for supporting the first guide mechanism as successive sections are joined thereto. In accordance with another inventive feature, amore » second guide mechanism comprises a pair of circular plates positioned to rotate within a lower deck opening and which are connected together and define a plurality of passages for receiving the plurality of conductors that extend in the interior pile. The connected plates are temporarily attached to the lower deck for transport so that the second guide mechanism can be detached and rotated to align the passages with the intended positions for the conductors whereafter the second guide mechanism is permanently attached to the lower deck. In accordance with another inventive feature, a third guide mechanism comprising a plurality of radially extending beams is supported on an upper deck. The second guide mechanism also has passages for access to the conductors and it too can be rotated into a position of alignment with the conductors and thereafter permanently fixed to the upper deck.« less