CN200985504Y

CN200985504Y - Anti-ice type conduit pipe support sea oil production platform

Info

Publication number: CN200985504Y
Application number: CN 200620168522
Authority: CN
Inventors: 赵欣; 艾志久; 李旭志; 姜巍; 舒仕勇; 王丹; 孔娜娜; 陈鑫磊; 齐昌东
Original assignee: China National Petroleum Corp; Liaohe Petroleum Exploration Bureau
Current assignee: China National Petroleum Corp; Liaohe Petroleum Exploration Bureau
Priority date: 2006-12-18
Filing date: 2006-12-18
Publication date: 2007-12-05
Anticipated expiration: 2016-12-18

Abstract

This utility model relates to an offshore shock-resistant oil production platform of anti-ice offshore jacket, consisting of a deck1, an upper strut 2, an inverted-triangular strut bar 3, a jacket 4, a regular-triangle strut bar 5, an iron sheet 6, a lower strut 7, and a diagonal strut bar 8. The jacket 4 is provided below the deck 1. The upper strut 2 and the lower strut 7 paralleled to each other are respectively provided between the upper and lower jacket. Around the part between the upper part of the jacket 4 and the deck 1 is provided with twelve inverted-triangular strut bars 3. Twelve regular-triangle strut bars 5 are provided around the part between the lower part of the jacket 4 and lower strut 7; the iron sheet 6 is paved on the bevel around the regular-triangle strut bars 5; two groups of diagonal strut bars 8 are provided under the regular-triangle strut bars 5. This oil production platform is designed reasonably with a novel structure and a reliable operation which can effectively keep the platform from direct shock from ice, and thus the safety of offshore production is ensured.

Description

A kind of iceproof jacket offshore oil production platform

Technical field:

The utility model relates to a kind of with the Yu Haiyang stage apparatus of shallow sea exploitation of oil-gas field load bearing equipment, personnel work particularly.

Background technology:

Along with the continuous expansion of marine oil gas field investigation and prospecting deeply and the raising of drilling at the sea, oil recovery technique, more and more offshore oil and gas field is found and drops into exploitation.Ocean (comprising the shallow sea) oil gas field is because it is positioned at the ocean water body zone, and the exploitation difficulty substantially exceeds onshore oil gas field, and oil and gas wellhead, well site must be provided for load bearing equipment and supply the production platform of oil recovery worker work, activity.At present, the on-the-spot offshore oil production platform that adopts usually is the fixed jacket platforms of four legs, and this kind platform is made up of deck, four leg jackets, pile foundation and brace summer.Under the general sea situation, the impact that this kind platform mainly is subjected to is from wave, ocean current, self load and performance load, but because being reduced in platform, temperature can freeze and form the zone that freezes on a large scale on every side in northern area winter, ice cube pushes platform under the effect of wind-force and wave and impacts, the platform of existing structure form can produce stronger forced vibration, and the ordinary production and the personal safety of platform in serious threat.

The utility model content:

The purpose of this utility model is to provide a kind of can effectively resist ice, guarantee that produce winter and the iceproof jacket offshore oil production platform of personal safety.

The utility model is to realize like this.This kind production platform is made up of deck, jacket, equilateral triangle support bar, iron sheet, diagonal angle support bar, del support bar and upper and lower strut, the below, deck is provided with jacket, be respectively equipped with the upper and lower strut that is parallel to each other between the jacket of upper and lower part, be provided with 12 del support bars around between jacket top and the deck, be provided with 12 equilateral triangle support bars around between jacket and the lower support bar, be equipped with iron sheet on the inclined-plane around the equilateral triangle support bar, the lower supporting rod below is provided with two groups of (totally 4) diagonal angle support bars.In the winter time, northern neritic area sea ice forms large-scale smooth ice cube at horizontal plane, and whole ocean platform is flattened ice cube and surrounds.Simultaneously, because the influence of environment driving force, ice cube constantly contacts extruding to platform, in this process, ice cube on the horizontal plane at first touches the iron sheet on this platform equilateral triangle strut, because the special construction of equilateral triangle strut, the power that act on the iron sheet inclined-plane this moment is the gravity of frictional force, normal pressure, ice cube and the buoyancy of seawater, and buoyant of sea water can be regarded as the flexible foundation of ice cube.Along with the continuous motion of slab, the local failure area can produce destruction, and increases gradually, and frictional force and normal pressure also will increase gradually.When the environment driving force is enough big, frictional force and normal pressure will increase always, if the design inclination angle is reasonable, slab is climbed to a certain degree can bend on the equilateral triangle strut slope and is broken, post-rift ice cube continues to swash under the promotion of follow-up ice and touches the del strut, because the special structure form of del strut, ice cube is subjected to the thrust of making a concerted effort to be far longer than follow-up fixedly ice cube of self gravitation and frictional force at this moment, then the ice cube plate of fracture produces downslide or falls in the seabed, thereby avoided ice cube directly to impact platform effectively, weaken the dither effect of platform, reached the purpose that guarantees the production platform safety in production.

The utility model is reasonable in design, novel structure, and reliable operation can effectively avoid ice cube directly to impact platform in the winter time under the cold conditions, guarantee the offshore production platform safety in production.

Description of drawings:

Fig. 1 is a general structure schematic diagram of the present utility model.Fig. 2 is that its B-B is to vertical view.Fig. 3 breaks through the journey schematic diagram for the anti-ice of platform, and number in the figure " 9 " is an ice cube, and arrow is its moving direction.

The specific embodiment:

The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model is by deck 1, last strut 2, del support bar 3, jacket 4, equilateral triangle support bar 5, iron sheet 6, lower supporting rod 7, diagonal angle support bar 8 is formed, its assembling, annexation is as follows: 1 below, deck is provided with jacket 4, on, be respectively equipped with the last strut 2 that is parallel to each other between the lower guide pipe support, lower supporting rod 7, be provided with 12 del support bars 3 around between jacket 4 tops and the deck 1, be provided with 12 equilateral triangle support bars 5 around between jacket 4 and the lower supporting rod 7, be equipped with iron sheet 6 on the inclined-plane around the equilateral triangle support bar 5, lower supporting rod 7 belows are provided with two groups of (totally 4) diagonal angle support bars 8.Wherein, last strut 2, lower supporting rod 7, del support bar 3, equilateral triangle support bar 5, diagonal angle support bar 8 all adopt circular tube structure, weld mutually with jacket 4 respectively, the angle of inclination between del support bar 3, equilateral triangle support bar 5 and the jacket 4 is respectively 20 °-40 ° and 10 °-30 °.Iron sheet 6 is laid and is fixed on the equilateral triangle support bar 5, constitutes an inclined-plane, does not allow to produce to slide unlikely destruction when the rigidity of iron sheet and intensity should guarantee that ice cube rubs thereon.

Claims

1, a kind of iceproof jacket offshore oil production platform, by deck (1), last strut (2), del support bar (3), jacket (4), equilateral triangle support bar (5), iron sheet (6), lower supporting rod (7), diagonal angle support bar (8) is formed, it is characterized in that: deck (1) below is provided with jacket 4, on, be respectively equipped with the last strut (2) that is parallel to each other between the lower guide pipe support, lower supporting rod (7), be provided with 12 del support bars (3) around between jacket (4) top and deck (1), be provided with 12 equilateral triangle support bars (5) around between jacket (4) and the lower supporting rod (7), equilateral triangle support bar (5) is equipped with iron sheet (6) on the inclined-plane on every side, and the below is provided with two groups of diagonal angle support bars (8).