CN201825221U

CN201825221U - Semi-submersible type drilling platform

Info

Publication number: CN201825221U
Application number: CN2010205609371U
Authority: CN
Inventors: 陈贵均
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-14
Filing date: 2010-10-14
Publication date: 2011-05-11
Anticipated expiration: 2020-10-14

Abstract

The utility model discloses a semi-submersible type drilling platform, which comprises a deck (1), a buoyancy tank A (2) and a buoyancy tank B (3). The two buoyancy tanks are horizontally placed and are parallel mutually, the buoyancy tank A (2) supports an upright column A (4) and an upright column B (5), the buoyancy tank B (3) supports an upright column C (6) and an upright column D (7), the four upright columns support the deck (1), an airfoil profile type horizontal transverse support A (8) and an airfoil profile type horizontal transverse support B (9) are connected between the buoyancy tank A (2) and the buoyancy tank B (3), and connection positions are located right below the upright columns on the inner sides of the buoyancy tanks. The airfoil profile type horizontal transverse supports are higher in self strength, thereby ensuring integral strength of the platform, improving fatigue performance and being capable of increasing the integral strength of the platform. The airfoil profile type horizontal transverse supports have higher displacement, and can increase effective load-bearing capacity of the platform, thereby increasing heavy storm resistant ability of the platform, and leading the platform to be capable of working in moderate and even severe sea conditions.

Description

A kind of semi-submersible drilling unit

Technical field

The utility model relates to drilling platform, particularly a kind of marine semi-submersible drilling unit.

Background technology

Along with marine petroleum development constantly develops to deep water sea area, traditional fixed platform can't satisfy the operation needs, floating platform will become the main tool of following deep water hydrocarbon field exploratory development, semi-submersible drilling unit is the important platform of a class in the floating platform, existing semi-submersible drilling unit, provide buoyancy by two buoyancy tanks for it, each buoyancy tank supports two vertical columns, topside four column apical support, between two root posts with a tubular cross support and connection (see figure 6), to improve flat-bed intensity, but the intensity that these tubular cross support is limited, in case destroyed entail dangers to, thereby having relatively high expectations to deck intensity to whole flat-bed safety; Another kind of semi-submersible drilling unit, and the tubular cross supported amount that is between the column that is not both of the former maximum is increased to two (see figure 7)s, even one when being damaged like this, int another root still can be worked, but equally also limited because of the intensity of tubular cross support, whole flat-bed intensity is also restricted, whole flat-bed safety is not high, and is yet higher to the requirement of deck intensity.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned shortcoming and provides a kind of horizontal support strength bigger, and big displacement is arranged, and guarantees platform and integrally intensity height, and the workload ability is strong, and exercise performance is better, the semi-submersible drilling unit that Chinese People's Anti-Japanese Military and Political College's stormy waves ability is strong.

Semi-submersible drilling unit of the present utility model, comprise deck, two buoyancy tanks, two buoyancy tank horizontal positioned and being parallel to each other, all support at least two root posts on each buoyancy tank, four root post upper support decks, it is characterized in that: be connected with the horizontal support of at least two wide width wing type levels between buoyancy tank, its junction be positioned at the inboard column of buoyancy tank under.

Above-mentioned semi-submersible drilling unit, the cross-sectional plane of the horizontal support of wide width wing type level is that width is greater than highly polygonal, its cross-sectional width is suitable with the column width at least, can be about horizontal midship section or vertical midship section symmetry, also can be asymmetric, for reducing holder boat resistance, the cross-sectional profiles line outside chamfering or the cavetto of the horizontal support of wide width wing type level.

Above-mentioned semi-submersible drilling unit, for improving redundancy, the axial bulkhead of the horizontal support of wide width wing type level separates and is at least two watertight cabins, inboard cabin is used for place apparatus and as passage, outboard cabin can be ballast tank, when even outboard cabin is impaired, inboard cabin still can keep the load-carrying capacity of wide width wing type level horizontal support self.

Above-mentioned semi-submersible drilling unit, environmental resitance during for the minimizing positioning action, the cross-sectional plane of column is a square, four jiaos of cavettos.

Above-mentioned semi-submersible drilling unit, in order to reduce resistance, the bow of buoyancy tank and stern outer wall shrink and the top cavetto gradually with certain angle.

Above-mentioned semi-submersible drilling unit, between the buoyancy tank upper pillar stand, can support a root post again, cooresponding, between column, also supporting a root post on the buoyancy tank, the buoyancy tank inboard is connected the horizontal support of a wide width wing type level again under this two root post and buoyancy tank junction, can further can improve the flat-bed bulk strength like this, thereby improve the ability of platform Chinese People's Anti-Japanese Military and Political College stormy waves.

The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, the utility model is provided with the horizontal support of two wide width wing type levels and connects as buoyancy tank under the inboard column of buoyancy tank, compare with the tubular cross support, the intensity of the horizontal support of wide width wing type level own is bigger, ability with good opposing horizontal separation power and vertical moment of torsion, can reduce the stress level of column and topside connecting portion to a great extent, thereby guarantee platform and integrally intensity and improve fatigue property, can improve the flat-bed bulk strength, the horizontal support of wide width wing type level has bigger displacement, can improve flat-bed workload ability, the horizontal support in the vertical direction of wide width wing type level has bigger cross-sectional plane, can improve the flat-bed exercise performance, thereby improve the ability of platform Chinese People's Anti-Japanese Military and Political College stormy waves, platform also can be worked under medium even abominable sea conditions, the horizontal support of wide width wing type level inside is divided at least two watertight cabins, when even outboard cabin is damaged, damaged structure still can not keep enough load-carrying capacitys.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is one of cross sectional drawing of the horizontal support of wide width wing type level;

Fig. 3 be the horizontal support of wide width wing type level cross sectional drawing two;

Fig. 4 be the horizontal support of wide width wing type level cross sectional drawing three;

Fig. 5 is running condition figure of the present utility model;

Fig. 6 is the scheme drawing of the utility model prior art;

Fig. 7 is the scheme drawing of the another kind of prior art of the utility model.

Among the figure 1, the deck, 2, buoyancy tank A, 3, buoyancy tank B, 4, column A, 5, column B, 6, column C, 7, column D, 8, the horizontal support of wide width wing type level A, 9, the horizontal support of wide width wing type level B, 10, inboard cabin, 11, outboard cabin.

The specific embodiment:

Below in conjunction with accompanying drawing and preferred embodiment, to according to the semi-submersible drilling unit specific embodiment, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.

Referring to Fig. 1-5, semi-submersible drilling unit of the present utility model, comprise deck 1, buoyancy tank A2 and buoyancy tank B3, two buoyancy tank horizontal positioned and being parallel to each other, buoyancy tank A2 upper support plays column A4 and column B5, and buoyancy tank B3 upper support plays column C6 and column D7, four root post upper support decks 1, it is characterized in that: be connected with wide width wing type level horizontal support A8 and the horizontal support of wide width wing type level B9 between buoyancy tank A2 and buoyancy tank B3, its junction be positioned at the inboard column of buoyancy tank under.The cross-sectional plane of the horizontal support of wide width wing type level is that width is greater than highly polygonal, its cross-sectional width is suitable with the column width at least, can be about horizontal midship section or vertical midship section symmetry, also can be asymmetric, for reducing holder boat resistance, the cross-sectional profiles line outside chamfering or the cavetto of the horizontal support of wide width wing type level.For improving redundancy, the axial bulkhead of the horizontal support of wide width wing type level separates and is inboard cabin 10 and outboard cabin 11 at least, inboard cabin 10 is used for place apparatus and as passage, outboard cabin 11 can be ballast tank, even when outboard cabin 11 was impaired, inboard cabin 10 still can keep the load-carrying capacity of wide width wing type level horizontal support self.Environmental resitance during for the minimizing positioning action, the cross-sectional plane of column is a square, four jiaos of cavettos.In order to reduce resistance, the bow of buoyancy tank and stern outer wall shrink and the top cavetto gradually with certain angle.Between buoyancy tank A2 upper pillar stand A4 and column B5, can support a root post again, cooresponding, between column C6 and column D7, also supporting a root post on the buoyancy tank B3, the buoyancy tank inboard is connected the horizontal support of a wide width wing type level again under this two root post and buoyancy tank junction, can further can improve the flat-bed bulk strength like this, thereby improve the ability of platform Chinese People's Anti-Japanese Military and Political College stormy waves.Place various device on the deck 1, as drill outfit, marine equipment and electrical generator etc., also configurable life building and helicopter deck.

The utility model is provided with the horizontal support of two wide width wing type levels and connects as buoyancy tank under the inboard column of buoyancy tank, compare with the tubular cross support, the intensity of the horizontal support of wide width wing type level own is bigger, ability with good opposing horizontal separation power and vertical moment of torsion, can reduce the stress level of column and topside connecting portion to a great extent, thereby guarantee platform and integrally intensity and improve fatigue property, can improve the flat-bed bulk strength, the horizontal support of wide width wing type level has bigger displacement, can improve the workload ability of flat-bed, the horizontal support in the vertical direction of wide width wing type level has bigger cross-sectional plane, can improve the flat-bed exercise performance, thereby improve the ability of platform Chinese People's Anti-Japanese Military and Political College stormy waves, platform also can be worked under medium even abominable sea conditions, the horizontal support of wide width wing type level inside is divided at least two watertight cabins, even when outboard cabin is damaged, damaged structure still can not keep enough load-carrying capacitys.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims

1. semi-submersible drilling unit, comprise deck (1), buoyancy tank A (2) and buoyancy tank B (3), two buoyancy tank horizontal positioned and being parallel to each other, buoyancy tank A (2) upper support plays column A (4) and column B (5), buoyancy tank B (3) upper support plays column C (6) and column D (7), four root post upper support decks (1), it is characterized in that: be connected with wide width wing type level horizontal support A (8) and the horizontal support of wide width wing type level B (9) between buoyancy tank A (2) and buoyancy tank B (3), its junction be positioned at the inboard column of buoyancy tank under.

2. semi-submersible drilling unit according to claim 1, it is characterized in that: between buoyancy tank A (2) upper pillar stand A (4) and column B (5), can support a root post again, cooresponding, go up at buoyancy tank B (3) and also support a root post between column C (6) and column D (7), the buoyancy tank inboard is connected the horizontal support of a wide width wing type level again under this two root post and buoyancy tank junction.

3. semi-submersible drilling unit according to claim 1 and 2, it is characterized in that: the cross-sectional plane of the horizontal support of wide width wing type level is that width is greater than highly polygonal, its cross-sectional width is suitable with the column width at least, can be about horizontal midship section or vertical midship section symmetry, also can be asymmetric, the cross-sectional profiles line outside chamfering or the cavetto of the horizontal support of wide width wing type level.

4. semi-submersible drilling unit according to claim 1 and 2, it is characterized in that: the axial bulkhead of the horizontal support of wide width wing type level separates and is inboard cabin (10) and outboard cabin (11), inboard cabin (10) is used for place apparatus and as passage, outboard cabin (11) can be ballast tank.

5. semi-submersible drilling unit according to claim 1 and 2 is characterized in that: the cross-sectional plane of column is square, four jiaos of cavettos.

6. semi-submersible drilling unit according to claim 1 and 2 is characterized in that: the bow of buoyancy tank and stern outer wall shrink and the top cavetto gradually with certain angle.