Platform for controlled containment of hydrocarbons
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E02B-017/02
E21B-043/01
E02B-017/00
출원번호
US-0575877
(2011-01-27)
등록번호
US-9506211
(2016-11-29)
우선권정보
NO-20100138 (2010-01-28)
국제출원번호
PCT/NO2011/000030
(2011-01-27)
§371/§102 date
20121218
(20121218)
국제공개번호
WO2011/093718
(2011-08-04)
발명자
/ 주소
Losnedal, Frode
Farestveit, Robert
Albriktsen, Per
Gudmestad, Ove Tobias
Skeie, Geir Morten
출원인 / 주소
Odfjell Drilling Technology Ltd.
대리인 / 주소
Foley & Lardner LLP
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
The invention relates to a concept for controlled containment of oil and condensate and possibly other types of liquids and chemicals in constructions as a possible failure of the conventional prior art barriers used in offshore petroleum exploration and production activities, intended for use at se
The invention relates to a concept for controlled containment of oil and condensate and possibly other types of liquids and chemicals in constructions as a possible failure of the conventional prior art barriers used in offshore petroleum exploration and production activities, intended for use at several water depths. The concept comprises a support structure (10) and a deck structure (14) positioned on top of the support structure (10), from where drilling may be performed, and where possible spillage of hydrocarbons from the drilling or production activities, in case of failure of the conventional barriers, will be contained and directed in a controlled manner to collecting storage tanks (46) integrated in the support structure (10).
대표청구항▼
1. Platform for controlled containment of oil and condensate, comprising: a support structure;a deck superstructure positioned on top of the support structure, from where drilling may be performed, the support structure comprising collecting tanks which form an integrated part of the support structu
1. Platform for controlled containment of oil and condensate, comprising: a support structure;a deck superstructure positioned on top of the support structure, from where drilling may be performed, the support structure comprising collecting tanks which form an integrated part of the support structure; anda base structure configured to rest on a seabed, and comprising a number of separate buoyancy bodies placed on top of each other and interlocked, and resting on the base structure by means of the weight of the buoyancy bodies, the buoyancy bodies interlocked to the base structure by means of vertically tensioned cables evenly arranged around a periphery of the platform, and extending between the base structure and winches arranged on the deck superstructure via fairleads, so as to be able to adjust the tension in the cables in order to withstand appearing forces and moments acting on the platform, and a plurality of mooring cables anchored to the sea bed at a large distance from the platform, the mooring cables being connected to the platform via fairleads and winches. 2. Platform according to claim 1, wherein all elements forming the support structure, are provided with vertical openings for drilling shafts extending in aligned manner through the platform, for positioning of wells and well recesses in a lower part of the base structure, and further with drilling equipment positioned on top of the deck superstructure. 3. Platform according to claim 2, wherein the drilling shafts are configured so that the joints during assembling are sealed such that watertight integrity for the shafts is established. 4. Platform according to claim 1, wherein a cutoff valve is positioned in the base structure as an extra barrier for a high pressure riser, the riser being terminated at deck superstructure level by a blowout preventer (BOP) and a valve assembly. 5. Platform for controlled containment of oil and condensate, comprising: a support structure;a deck superstructure positioned on top of the support structure, from where drilling may be performed, the support structure comprising collecting tanks which form an integrated part of the support structure; anda base structure configured to rest on a seabed, and comprising a number of separate buoyancy bodies placed on top of each other and interlocked, and resting on the base structure by means of the weight of the buoyancy bodies, the buoyancy bodies interlocked to the base structure by means of vertically tensioned cables evenly arranged around a periphery of the platform, and a plurality of mooring cables anchored to the sea bed at a large distance from the platform, the mooring cables being connected to the platform via fairleads and winches,wherein the base structure is fixed to the seabed by means of a plurality of piles or conductor tubes, pressed and cemented down into the seabed,wherein a fixing point for the vertically tensioned cables coincide with upper ends of the piles or conductor tubes. 6. Platform according to claim 5, further comprising locking tie rods movably arranged in conductor ducts and extending across a joint between two consecutive platform sections, each locking tie rod at its upper and lower end being provided with locking surfaces co-functioning with corresponding locking surfaces in the conductor ducts, wherein each locking tie rod is configured to be locked by rotating the locking tie rod with respect to the duct. 7. Platform for controlled containment of oil and condensate, comprising: a support structure;a deck superstructure positioned on top of the support structure, from where drilling may be performed, the support structure comprising collecting tanks which form an integrated part of the support structure; anda base structure configured to rest on a seabed, and comprising a number of separate buoyancy bodies placed on top of each other and interlocked, and resting on the base structure by means of the weight of the buoyancy bodies, the buoyancy bodies interlocked to the base structure by means of vertically tensioned cables evenly arranged around a periphery of the platform, and a plurality of mooring cables anchored to the sea bed at a large distance from the platform, the mooring cables being connected to the platform via fairleads and winches,wherein construction elements forming the supporting structure are configured to be assembled by means of guiding means or dowels and corresponding openings or recesses in the position of the element over or below the guiding means or dowels.
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이 특허에 인용된 특허 (17)
Shaw Clarence W. (Metairie LA), Anchored offshore structure with sway control apparatus.
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Abbott Philip A. (Houston TX) Dailey James E. (Houston TX) Karsan Demir I. (Houston TX) Mangiavacchi Andrea (Houston TX), Mooring and supporting apparatus and methods for a guyed marine structure.
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