CN105256778A - Six-leg jacket wellhead platform - Google Patents

Six-leg jacket wellhead platform Download PDF

Info

Publication number
CN105256778A
CN105256778A CN201410338681.2A CN201410338681A CN105256778A CN 105256778 A CN105256778 A CN 105256778A CN 201410338681 A CN201410338681 A CN 201410338681A CN 105256778 A CN105256778 A CN 105256778A
Authority
CN
China
Prior art keywords
jacket
platform
leg
wellhead
chunk
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.)
Pending
Application number
CN201410338681.2A
Other languages
Chinese (zh)
Inventor
杨思明
巴砚
夏志
沈晓鹏
王春升
陈邦敏
张晖
刘伟
朱海山
侯金林
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.)
China National Offshore Oil Corp CNOOC
CNOOC Research Institute Co Ltd
Original Assignee
China National Offshore Oil Corp CNOOC
CNOOC Research Institute Co Ltd
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 China National Offshore Oil Corp CNOOC, CNOOC Research Institute Co Ltd filed Critical China National Offshore Oil Corp CNOOC
Priority to CN201410338681.2A priority Critical patent/CN105256778A/en
Publication of CN105256778A publication Critical patent/CN105256778A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a six-leg jacket wellhead platform. The six-leg jacket wellhead platform comprises six jacket legs and platform modules. The jacket legs are arranged vertically and located on the horizontal plane. Connection lines of the jacket legs form a hexagon. The jacket platform comprises the two platform modules. The two platform modules are both arranged at the upper ends of the jacket legs. Each platform module is placed at the upper ends of the three corresponding jacket legs which are arranged in a triangle shape. A well slot area is arranged in the middle of the platform modules. According to the novel six-leg jacket wellhead platform, a small medium-sized floating crane with the practical hoisting capacity being lower than 3000 tons is adopted for installing the platform modules in a blocked mode, large-sized floating crane resources can be saved, investment cost is reduced, and economic benefits of a program are improved.

Description

6 leg jacket wellhead platforms
Technical field
The present invention relates to a kind of novel 6 leg jacket wellhead platforms, belong to offshore platform field.
Background technology
In recent years along with continuous discovery and the rolling development of marine oil field, most block forming region exploitation general layout, in regionl development, the functional requirement born is needed according to offshore oil field development scale and newly-built platform, some wellhead platform not only will bear the function of oil recovery, well workover, also needs the gathering center as region to arrange the facilities such as power station, oil gas water treatment and life building.Because relevant equipment, facility are more, 4 conventional leg platform floor spaces often cannot meet the demands, and most platform needing 6 legs or 8 leg jackets to support provides enough deck spaces.
Adopt traditional 6 leg jacket wellhead platform forms owing to cannot realize carrying out piecemeal lifting to deck chunk, can only integral hoisting be carried out, large-scale floating crane (actual Lifting Capacity need be greater than 3500 tons) therefore must be adopted to carry out integral hoisting.And large-scale floating crane resource scarcity, expense is about the twice of medium-sized crane barge, causes operating expenses significantly to increase.
Adopt 8 leg jacket form wellhead platforms then can realize the smaller resource of employing scale and also realize piecemeal lifting than more rich medium-sized crane barge (actual Lifting Capacity is less than 3000 tons).Medium-sized crane barge expense is lower, effectively can reduce installation cost.But 8 leg platforms add two legs than 6 leg platforms more, structural steel amount also can roll up than 6 leg platforms.
Summary of the invention
The object of this invention is to provide a kind of novel 6 leg jacket wellhead platforms, the present invention is by changing the arrangement of jacket operating point (the platform chunk strong point), solve traditional 6 leg wellhead platforms can not piecemeal lifting problem, reduce and employ large-scale floating crane resource, reduce cost of investment, improve the economic benefit of project.
Novel 6 leg jacket wellhead platforms provided by the present invention, comprise 6 jacket legs and platform chunk;
Described jacket leg is vertically arrange, and goes up along the horizontal plane, and the line of described jacket leg forms a hexagon;
Described jacket platform comprises 2 pieces of described platform chunks, and 2 pieces of described platform chunks are all positioned over the upper end of described jacket leg, and each described platform chunk is all positioned over the upper end of 3 the described jacket legs be triangularly arranged;
The medium position of described platform chunk is provided with well slot district.
Described jacket wellhead platform, the medium position of described platform chunk is also provided with workover rig and/or platform rig, can be located in described well slot district during work.
Described jacket wellhead platform, is provided with waterproof casing in the framework that 4 described jacket legs surround.
Described jacket wellhead platform, the line of described jacket leg forms a regular hexagon, is convenient to described platform chunk and is divided into left and right two pieces to lift.
Described jacket wellhead platform, 2 pieces of described platform chunks are symmetrical set, and can reduce the bias of lifting operating mode chunk, reduce the extra demand to crane barge resource; The bias of chunk during operating mode in place can be reduced simultaneously, improve the stressed of jacket, improve the overall utilization rate of pile foundation.
Described jacket wellhead platform, is 45 ° ~ 75 °, to keep the stability of platform in 2 that are oppositely arranged described leg-of-mutton drift angles.
Compared with 6 traditional leg jacket wellhead platforms, there is difference as shown in table 1 in jacket operating point location, mounting means, well slot district and workover rig position and expense in novel 6 leg jacket wellhead platforms provided by the invention:
The difference of the novel 6 leg jacket wellhead platforms of table 1 the present invention and 6 traditional leg jacket wellhead platforms
Novel 6 leg jacket wellhead platform chunks provided by the present invention, the line of jacket leg operating point is hexagon, can obtain following technique effect:
1) be convenient to platform chunk piecemeal install, increase the flexibility of installing;
2) platform for medium-scale floor space can select 6 leg jacket flat form;
3) improve the bias of traditional 6 leg jacket wellhead platform lifting operating mode chunks, reduce the extra demand to crane barge resource;
4) improve the bias of traditional 6 leg jacket wellhead platform condition chunk in place, improve the overall utilization rate of pile foundation.
Novel 6 leg jacket platform chunks provided by the invention, make platform chunk that less medium-sized crane barge (actual Lifting Capacity is less than 3000 tons) can be adopted to carry out piecemeal installation, can reduce and employ large-scale floating crane resource, reduce cost of investment, improve the economic benefit of project.
Accompanying drawing explanation
Fig. 1 is the top view of jacket leg in the novel 6 leg jacket wellhead platforms of the present invention.
Fig. 2 is the top view of the novel 6 leg jacket wellhead platforms of the present invention.
Fig. 3 is the elevational schematic view of the novel 6 leg jacket wellhead platforms of the present invention.
In figure, each mark is as follows:
1 jacket leg, 2 offshore platform chunk edge lines, 3 offshore platform chunks lifting piecemeal lines, 4 crossbeam center lines, 5 offshore platform chunk piecemeals lift left piece, 6 offshore platform chunk piecemeals lift right piece, 7 well slot districts, 8 waterproof casings, 9 workover rigs;
A jacket operating point center to center distance, B jacket operating point center to center distance, C jacket operating point line angle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention is not limited to following examples.
As depicted in figs. 1 and 2, for novel 6 leg jacket wellhead platforms provided by the invention, it comprises 6 jacket legs 1 and platform chunk (not marking in figure), and 6 jacket legs 1 are vertically arrange, and go up along the horizontal plane, the line of jacket leg 1 forms a hexagon; Jacket leg operating point center to center distance A, B may be selected to be 14m ~ 20m.
Jacket wellhead platform of the present invention comprises 2 pieces of platform chunks, the upper end being positioned over jacket leg 1 that 2 pieces of platform chunks are all symmetrical, and each platform chunk is all positioned over the upper end of 3 the jacket legs 1 be triangularly arranged, as shown in Figure 2.In order to ensure the stability of platform, jacket leg 1 operating point line angle C (namely in 2 the leg-of-mutton drift angles be oppositely arranged) is generally taken as 45 ° ~ 75 °.
As shown in Figures 2 and 3, offshore platform chunk lifting piecemeal line 3 is in chunk centre position, when offshore platform chunk piecemeal is lifted, offshore platform chunk piecemeal lifts left piece 5 and offshore platform chunk piecemeal lifts right piece 6 by 3 jacket legs 1 and supports, and realizes piecemeal lifting.Well slot district 7 is arranged in platform central and is lifted piecemeal line 3 and be divided into two pieces, is lifted left piece 5 respectively and offshore platform chunk piecemeal lifts on right piece 6 by sea platform chunk piecemeal.Waterproof casing 8 is arranged in the centre of the framework that 4 jacket legs 1 are formed.Workover rig 9 is arranged in the central authorities of offshore platform chunk.
Novel 6 leg jacket wellhead platforms provided by the invention are generally applicable to the medium-sized offshore platform of weight at 3000t ~ 5000t.Within the scope of this, select above-mentioned novel 6 leg jacket wellhead platforms in technical scheme more rationally, economic benefit is more remarkable.
For certain offshore platform, adopt the novel 6 leg jacket wellhead platforms of the present invention and adopt the contrast of traditional jacket wellhead platform as shown in table 2.
The contrast of the novel 6 leg jacket platforms of table 2 and the traditional jacket platform of employing

Claims (6)

1. 6 leg jacket wellhead platforms, is characterized in that: it comprises 6 jacket legs and platform chunk;
Described jacket leg is vertically arrange, and goes up along the horizontal plane, and the line of described jacket leg forms a hexagon;
Described jacket platform comprises 2 pieces of described platform chunks, and 2 pieces of described platform chunks are all positioned over the upper end of described jacket leg, and each described platform chunk is all positioned over the upper end of 3 the described jacket legs be triangularly arranged;
The medium position of described platform chunk is provided with well slot district.
2. jacket wellhead platform according to claim 1, is characterized in that: the medium position of described platform chunk is provided with workover rig and/or platform rig.
3. jacket wellhead platform according to claim 1, is characterized in that: be provided with waterproof casing in the framework that 4 described jacket legs surround.
4. the jacket wellhead platform according to any one of claim 1-3, is characterized in that: the line of described jacket leg forms a regular hexagon.
5. the jacket wellhead platform according to any one of claim 1-4, is characterized in that: 2 pieces of described platform chunks are symmetrical set.
6. jacket wellhead platform according to claim 5, is characterized in that: be 45 ° ~ 75 ° in 2 that are oppositely arranged described leg-of-mutton drift angles.
CN201410338681.2A 2014-07-16 2014-07-16 Six-leg jacket wellhead platform Pending CN105256778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410338681.2A CN105256778A (en) 2014-07-16 2014-07-16 Six-leg jacket wellhead platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410338681.2A CN105256778A (en) 2014-07-16 2014-07-16 Six-leg jacket wellhead platform

Publications (1)

Publication Number Publication Date
CN105256778A true CN105256778A (en) 2016-01-20

Family

ID=55096694

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410338681.2A Pending CN105256778A (en) 2014-07-16 2014-07-16 Six-leg jacket wellhead platform

Country Status (1)

Country Link
CN (1) CN105256778A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107010170A (en) * 2016-01-27 2017-08-04 中国国际海运集装箱(集团)股份有限公司 The preparation method and folding method of waterproof casing base platform

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634110A (en) * 1986-06-24 1988-01-09 Nippon Kokan Kk <Nkk> Method for setting offshore platform
CN202298591U (en) * 2011-09-23 2012-07-04 中国海洋石油总公司 Shallow water tremie frame platform
CN103225304A (en) * 2013-04-28 2013-07-31 国电联合动力技术有限公司 Marine foundation supporting structure and construction method thereof
CN203960832U (en) * 2014-07-16 2014-11-26 中国海洋石油总公司 A kind of 6 leg jacket wellhead platforms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634110A (en) * 1986-06-24 1988-01-09 Nippon Kokan Kk <Nkk> Method for setting offshore platform
CN202298591U (en) * 2011-09-23 2012-07-04 中国海洋石油总公司 Shallow water tremie frame platform
CN103225304A (en) * 2013-04-28 2013-07-31 国电联合动力技术有限公司 Marine foundation supporting structure and construction method thereof
CN203960832U (en) * 2014-07-16 2014-11-26 中国海洋石油总公司 A kind of 6 leg jacket wellhead platforms

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
廖谟圣: "东海平湖油气田开发工程投产成功", 《西部探矿工程》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107010170A (en) * 2016-01-27 2017-08-04 中国国际海运集装箱(集团)股份有限公司 The preparation method and folding method of waterproof casing base platform
CN107010170B (en) * 2016-01-27 2019-02-15 中国国际海运集装箱(集团)股份有限公司 The production method and folding method of waterproof casing base platform

Similar Documents

Publication Publication Date Title
US8733266B2 (en) Integrative deep draft floating production platform with unconditional stability and offshore installation method thereof
RU2422614C2 (en) Mobile arctic drilling system of year-round operation
US8387704B2 (en) System and method for simultaneous sea drilling operations
KR20100055053A (en) (method of establishing sea wind power generator and apparatus thereof
CN202689015U (en) Double-wall steel cofferdam for high-span prestressed concrete continuous beam deep water pier construction
CN102943636A (en) Winch heave compensation device for ocean floating drilling platform
KR101266913B1 (en) Construction method of shore wind power generation facility
CN103243926B (en) Construction method for hoisting engineering tube well stand pipe of high-rise building
CN103119239A (en) Multi-operational multi-drilling system
RU2555976C2 (en) Jack-up drilling rig with two derricks for operation under ice conditions
CN103129715B (en) Conduit-rack semi-submersible type oil-extraction platform
JP5869693B2 (en) Floating transfer method for a kind of offshore wind power plant
CN102312442A (en) Construction method of trestle steel pipe pile foundation
WO2011070190A4 (en) Multi-purpose ocean platform, and production and installation method thereof
CN105203301B (en) A kind of day car owner passively combines heave compensation experimental rig
CN201961509U (en) Unconditional stability equipped deep-draft floating oil production platform
CN101963257B (en) Method for fixing seabed pipeline and preventing buckle propagation
CN100523388C (en) Large-scale trussed-beam spud leg waterborne transmitting and mounting method
WO2011120209A1 (en) Deep draught combined platform with truss column
ES2387342B2 (en) Semi-submersible triangular platform for open sea applications
CN203487818U (en) Main power house of thermal power plant
RU2583467C2 (en) Ice worthy jack-up drilling unit with pre-loading tension system
CN102849185B (en) Pile leg installation method for self-elevating drilling platform
CN103295078A (en) Structural design optimization method for deepwater catenary mooring rope
CN103617333B (en) Ocean platform floating holder installation shock analog analysing method

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160120