WO2016124011A1

WO2016124011A1 - Middle depth water semi-submersible type drilling platform

Info

Publication number: WO2016124011A1
Application number: PCT/CN2015/092599
Authority: WO
Inventors: 李磊; 罗伯特·拉格威森; 肖元; 张利华; 韩荣贵; 马格纳斯·***特; 拉特格·欧格曼; 贺昌海; 傅强; 刘富祥; 王军; 李峰; 滕瑶; 张工
Original assignee: 中集海洋工程研究院有限公司; 巴索技术公司; 烟台中集来福士海洋工程有限公司; 中国国际海运集装箱(集团)股份有限公司
Priority date: 2015-02-02
Filing date: 2015-10-23
Publication date: 2016-08-11

Abstract

Disclosed is a middle depth water semi-submersible type drilling platform, comprising two lower floating bodies (1) disposed at an interval, at least four upright posts (2) respectively vertically disposed on the two lower floating bodies, and a main boat body (3) in a square box structure supported on the upright posts; each of the lower floating bodies (1) comprises two fore and aft sections (11) and one middle section (12), wherein the two fore and aft sections (11) are respectively connected to two longitudinal ends of the middle section; each of the fore and aft sections (11) is of a structure with the width gradually reduced from the middle part to two ends in a longitudinal direction, the widest part of each of the fore and aft sections (11) is in smooth transition to an outer end by a curved surface, the end part of the outer end of each of the fore and aft sections (11) forms a cambered surface, and the widest part of each of the fore and aft sections (11) and the middle section (12) are in curved surface smooth transition connection; the greatest width of the middle section (12) is smaller than the greatest width of the fore and aft sections (11); the upright posts (2) are vertically disposed on the fore and aft sections (11) of the lower floating bodies. The device reduces towing resistance and self-propulsion resistance of the drilling platform, reduces the fuel consumption and lowers the operation costs, and also can lower the heaving motion amplitude response operator of the platform and improve the heaving performance of the platform.

Description

中深水半潜式钻井平台Medium and deep water semi-submersible drilling platform

技术领域Technical field

本发明涉及海洋工程技术领域，涉及一种浮动式海上结构物，更具体地，涉及一种适合在中深水海域作业的半潜式钻井平台。The invention relates to the technical field of marine engineering, relates to a floating offshore structure, and more particularly to a semi-submersible drilling platform suitable for operation in medium and deep waters.

背景技术Background technique

众所周知，石油资源是现代工业的动力源泉，伴随着陆地石油资源的日趋贫乏，海洋油气资源的勘探开发利用近年来不断的得到快速发展，从而导致海洋工程量需求旺盛，特别是随着海洋工程从浅水逐步的走向中深水，中深水海洋工程设备如半潜式钻井平台、半潜式海洋生活平台、半潜式海洋起重平台等海工装备产品得到世界各大船厂的追捧，竞争激烈。As we all know, petroleum resources are the source of power for modern industry. With the increasing poverty of terrestrial petroleum resources, the exploration, development and utilization of marine oil and gas resources have been rapidly developed in recent years, resulting in strong demand for marine engineering, especially with ocean engineering. Shallow water gradually moves toward medium and deep water. The marine engineering equipment such as semi-submersible drilling platform, semi-submersible marine life platform and semi-submersible marine lifting platform are sought after by the world's major shipyards, and the competition is fierce.

海洋工程的设计建造及工艺流程是一项庞大而又非常复杂的***工程，同样中深水半潜式钻井平台的设计建造及工艺流程也存在工序复杂、船台工期较长的特点，例如常见的中深水半潜式钻井平台由几十个大***组成，典型的如：定位***、压载***、消防***、舱底水***、海水冷却***、淡水冷却***、燃油***、火炬放空***、钻井设备及泥浆循环***、大型起重设备及其吊臂支撑结构等，并且每个大***往往由数十甚至数百个子***组成。如此繁多的设备***在有限的平台空间进行布置，在设计建造时，客观上存在相当大的难度，并且在整个设计建造过程中需要多专业、多工序、多***的有效配合协作才能顺利完成。于此同时，中深水半潜式钻井平台在油气岩层所在海域作业时，往往还要面对恶劣的天气及海况条件，例如：在英国北海海域，其100年一遇的台风平均风速为37米/秒,200年一遇的台风平均风速为40米/秒，有义波高为15米，海水表面最大流速可达2.0米/秒，油气岩层所在海域的水深往往达到750米左右，钻井深度也需要达到7500米左右。另外，露天甲板区域往往还是钻井设备运载和船员进行多项施工作业的场所，因此，如何形成并实现海洋工程在中深水海域油气岩层的可靠开采作业、抵御复杂恶劣的天气及海况条件的船体性能、露天甲板区域的大面积存储支持及大空间设备布置功能，是海洋工程研发设计部门及建造企业必须要面对的一个实际问题。The design, construction and process of offshore engineering is a large and very complicated system engineering. The design, construction and process flow of the medium-deepwater semi-submersible drilling rig also have the characteristics of complicated procedures and long shipbuilding schedules, such as common ones. The deepwater semi-submersible drilling rig consists of dozens of large systems, such as: positioning system, ballast system, fire protection system, bilge water system, seawater cooling system, fresh water cooling system, fuel system, torch venting system, drilling equipment. And mud circulation system, large lifting equipment and its boom support structure, and each large system often consists of dozens or even hundreds of subsystems. Such a large number of equipment systems are arranged in a limited platform space. When designing and constructing, there is considerable difficulty in objectiveness, and it requires a multi-disciplinary, multi-process, multi-system effective cooperation and cooperation in the entire design and construction process to be successfully completed. At the same time, the medium-deep water semi-submersible drilling rig often faces severe weather and sea conditions when working in the waters where the oil and gas formations are located. For example, in the North Sea of the UK, the average wind speed of a 100-year typhoon is 37 meters. / sec. The average wind speed of a typhoon in 200 years is 40 m / s, the wave height is 15 m, the maximum flow velocity on the sea surface is 2.0 m / s, and the water depth of the oil and gas rock formation is often about 750 m. Need to reach about 7500 meters. In addition, the open deck area is often the place where the drilling equipment is carried and the crew carries out many construction operations. Therefore, how to form and realize the reliable mining operation of marine engineering oil and gas layers in the middle and deep waters, and the hull performance against complex and severe weather and sea conditions Large-area storage support in the open deck area and large space equipment layout functions are a practical problem that the offshore engineering R&D and design department and construction companies must face.

还有，通常可以认为半潜式钻井平台共有三种总体工况，即：钻井作业工况、自航行工况和抗风暴自存工况。在海洋油气开采生产过程中，钻井作业工况是半潜式钻井平台的主要工况，自航行工况是指半潜式钻井平台在完成某一油气田的钻井作业后，因油气岩层往往分布在不同的海域位置，中深水半潜式钻井平台还需要依靠自身(或拖带)动力转移航行至作业海域。因此，如何处理解决中深水半潜式钻井平台在海洋油气开采过程中，其拖航及自航阻力过大的问题，同样也是海洋工程研发设计部门及建造企业必须要面对的又一个实际问题。In addition, it can generally be considered that the semi-submersible drilling rig has three general working conditions, namely: drilling operation conditions, self-propelled working conditions and anti-storm self-storing conditions. In the process of offshore oil and gas production, the drilling operation conditions are the main working conditions of the semi-submersible drilling platform. The self-propelled working condition refers to the semi-submersible drilling platform after the drilling operation of a certain oil and gas field is completed, because the oil and gas rock layers are often distributed in In different sea areas, the medium-deep water semi-submersible drilling platform also needs to rely on its own (or towing) power transfer to sail to the working sea area. Therefore, how to deal with the problem of excessive towing and self-propulsion resistance in the process of offshore oil and gas exploitation of medium-deepwater semi-submersible drilling rigs is another practical problem that marine engineering R&D and design departments and construction enterprises must face. .

在以往情况下，对于半潜式钻井平台的设备设置、总体布置、船体结构设计、下船体船型设计及有害气体的处理排放等技术问题的解决，以往常规的做法是：采用在下船体的左右舷分别设置一个浮体(浮筒)的技术方案，来为整体的半潜式钻井平台提供所需全部浮力；同时将两个下浮体大间距的设置在半潜式钻井平台的左右两侧，其主要目的是为了防止横摇幅值过大，以保证半潜式钻井平台的整体稳性；在钻井作业工况或抗风暴自存工况时，下浮体完全沉没于海平面以下的海水里，其主要目的是在为半潜式钻井平台提供整体浮力的同时，用来防止波浪扰动力及纵摇幅值过大等不利问题的出现；将两个下浮体的横向剖面设计成四角有圆弧的矩形，作用是为了减少半潜式钻井平台在自航行(或拖带航行)工况时的航行阻力及拖曳力；分别在位于半潜式钻井平台左右舷的下浮体朝向海底一侧，设计安装6-8只全回转推进器(连同其它部件组成动力定位***)，且布置成左右对称的形式，这些推进器可以在自航行工况时提供航行推进动力，并通过调整其自身的转动角度及转动速度来控制半潜式钻井平台的航向航速，在钻井作业工况或抗风暴自存工况时，也可以通过调整其各自的转动角度及转动速度，以使半潜式钻井平台始终可靠的动态定位于作业海域的指定钻井位置；在半潜式钻井平台主甲板的左右舷分别设置一个水下机器人工作平台，用以运载水下机器人和对其进行收放作业；对于下浮体与立柱之间的连接，采用立柱外板与下浮体外板对齐，且在侧面的连接处增加肘板的形式，对于立柱和箱型主船体之间的连接，采用立柱外板与箱型主船体外板对齐的方式，再通过使用坞内吊装、整体合拢和焊接的方法，使得半潜式钻井平台的两个下浮体与四根立柱之间、四根立柱与箱型主船体之间连接合拢在一起，从而再组成一个完整的船体结构，具有外表美观、对位容易及有利于建造的优点。In the past, equipment installation, overall layout, hull structural design, and hull for semi-submersible drilling rigs The technical solution to the design of ship type and the treatment of harmful gas emissions has been conventionally practiced by providing a floating body (float) technical solution on the left and right sides of the lower hull to provide all the required semi-submersible drilling platforms. Buoyancy; at the same time, the two large floating bodies are arranged on the left and right sides of the semi-submersible drilling platform, the main purpose of which is to prevent the roll amplitude from being too large to ensure the overall stability of the semi-submersible drilling platform; The working condition or the anti-storm self-storing condition, the floating body is completely sunk in the sea water below sea level. Its main purpose is to prevent the wave power and the pitching force while providing the overall buoyancy for the semi-submersible drilling platform. The occurrence of unfavorable problems such as excessive value; the transverse section of the two lower floating bodies is designed as a rectangular arc with four corners, which is used to reduce the navigation resistance of the semi-submersible drilling platform in self-propelled (or towed) conditions. Dragging force; designed to install 6-8 full-turn propellers on the side of the submarine on the left and right sides of the semi-submersible drilling rig (together with other components) Positioning system), and arranged in a bilaterally symmetrical form, these propellers can provide navigation propulsion power in self-propelled conditions, and control the heading speed of the semi-submersible drilling platform by adjusting its own rotation angle and rotation speed. When drilling operation conditions or anti-storm self-storing conditions, it is also possible to adjust the respective rotation angle and rotation speed so that the semi-submersible drilling platform can be reliably and dynamically positioned at the designated drilling position in the working sea area; An underwater robot working platform is respectively arranged on the left and right sides of the main deck of the drilling platform for carrying the underwater robot and retracting the same; for the connection between the lower floating body and the column, the outer column of the column is aligned with the lower floating body plate. And the form of the bracket is added at the joint of the side. For the connection between the column and the main hull of the box type, the outer column of the column is aligned with the outer panel of the main hull of the box, and then the hoisting, integral closing and welding are performed by using the dock. Method of connecting the two lower floating bodies and the four vertical columns of the semi-submersible drilling platform, and connecting the four vertical columns with the box-shaped main hull Rope together to re-form a complete hull structure, beautiful appearance, easy and advantages of the position in favor of the construction.

然而现有的半潜式钻井平台中，或多或少地具有以下一些不足之处：缺点一是半潜式钻井平台主甲板本身的空间面积较小，同时上层建筑及各种设备过多的占据了宝贵的露天甲板存储面积和作业空间，使得本来就显狭窄的主甲板空间变的更加拥挤不堪，同时操作检修位置较高的设备布置和结构设计也不便于作业者的施工安装及交船后船员的维修使用保养；缺点二是半潜式钻井平台下浮体的设计不甚合理，这样在自航行(或拖带航行)工况时的航行阻力或所需拖曳力较大，由此带来的直接弊端就是主机燃油量、时间成本及油气开采作业成本的增加；缺点三是半潜式钻井平台下浮体的设计不甚合理，这样在钻井作业工况或抗风暴自存工况时，就使得垂荡运动特性欠佳，进而影响连接立管的作业可靠性及半潜式钻井平台对作业海域的适应性；缺点四是由于半潜式钻井平台数量过多的全回转推进器，使得动力定位***及其控制回路过于复杂繁琐，同时推进电机及轴系、动力电缆、控制电缆及控制箱等设备也会占用大量的空间面积，同时材料成本、人工成本和建造周期也会相应的增加；缺点五是由于半潜式钻井平台采用通过主柴油发电机组排烟***直接向海洋大气排空消耗的处置办法，会增加对露天甲板区域、周围海域或码头的噪声污染量级，同时直接向大气排放燃油残余物，还存在着浪费能源并污染海洋大气环境的问题，不利于人类生存环境的保护；缺点六是由于半潜式钻井平台采用船体主要部件(单元模块或分段)外板对齐的连接方式，这就需要额外增加肘板等船体部件，同时还要加大板厚，这样就使船体局部结构趋于复杂，更重要的是由于连接处肘板位置的应力较大，容易引起船体部件的疲劳损坏，进而影响到半潜式钻井平台的整体安全作业并引发海难事故的发生。However, the existing semi-submersible drilling rigs have more or less the following shortcomings: The disadvantage is that the space of the main deck of the semi-submersible drilling platform itself is small, while the superstructure and various equipments are excessive. Occupying valuable storage space on the open deck and working space, the already narrow main deck space becomes more crowded, and the equipment layout and structural design with higher maintenance positions are not convenient for the operator to install and deliver. The maintenance and maintenance of the rear crew; the second disadvantage is that the design of the floating body under the semi-submersible drilling platform is not reasonable, so that the sailing resistance or the required dragging force in the self-propelled (or towed navigation) working conditions is relatively large, thereby bringing The direct drawbacks are the increase of the fuel quantity, time cost and the cost of oil and gas production operations. The shortcoming is that the design of the floating body under the semi-submersible drilling platform is not reasonable, so that in the case of drilling operation or anti-storm self-storing conditions, The characteristics of the heave motion are not good, which affects the operational reliability of the connected riser and the adaptability of the semi-submersible drilling platform to the working sea area. The disadvantage is due to The full-slewing thruster with too many submersible drilling platforms makes the dynamic positioning system and its control loop too complicated and cumbersome. At the same time, the propulsion motor and shafting, power cables, control cables and control boxes also occupy a large amount of space. At the same time, the material cost, labor cost and construction period will increase accordingly. The shortcoming is that the semi-submersible drilling platform adopts the disposal method of directly discharging to the ocean atmosphere through the main diesel generator exhaust system, which will increase the open deck area. The noise pollution level of the surrounding sea area or dock, while directly discharging fuel residues into the atmosphere, there is also the problem of wasting energy and polluting the marine atmospheric environment, which is not conducive to the protection of human living environment; the disadvantage is due to the semi-submersible drilling platform. The use of the outer joints of the main components of the hull (unit modules or sections), which requires additional hull parts such as brackets, while increasing the thickness of the hull. This makes the local structure of the hull more complicated. More importantly, the stress on the position of the bracket at the joint is large, which easily causes fatigue damage of the hull components, which affects the overall safety operation of the semi-submersible drilling platform and causes marine accidents. occur.

因此，如何开发研究出一种具有小阻力低垂荡且大空间的船型，并能用其主甲板来布置设计各类功能设备，以克服上述海洋工程在设计和作业过程中存在的不足，在规定的采油周期和建造成本的前提要求下，利用海洋油气生产企业和海洋工程建造企业现有的工艺技术条件，改善平台的运动特性，以提高平台的作业安全性和适用性，同时减少材料人工投入并降低钻井采油作业成本，来完成海洋工程设计及海洋油田开发的工作，是本发明的研究重点。Therefore, how to develop a ship type with small resistance, low heave and large space, and to design various functional equipments with its main deck to overcome the shortcomings in the design and operation of the above-mentioned marine engineering. Under the premise of the specified oil production cycle and construction cost, the existing process technology conditions of marine oil and gas production enterprises and offshore engineering construction enterprises are utilized to improve the motion characteristics of the platform to improve the safety and applicability of the platform and reduce material labor. It is the research focus of this invention to invest in and reduce the cost of drilling and oil recovery operations to complete marine engineering design and offshore oilfield development.

发明内容Summary of the invention

本发明的目的首先在于提供一种中深水半潜式钻井平台，解决现有技术中钻井平台阻力大的问题。The object of the present invention is to provide a medium and deep water semi-submersible drilling platform, which solves the problem of large resistance of the drilling platform in the prior art.

进一步地，本发明还对半潜式钻井平台的垂荡性能进行改善。Further, the present invention also improves the heave performance of the semi-submersible drilling rig.

为解决上述技术问题，本发明采用如下技术方案：一种中深水半潜式钻井平台，包括间隔设置的两个下浮体、分别竖直设置在两下浮体上的至少四个立柱和支撑于各立柱上的呈四方形箱型结构的主船体；各下浮体包括两个艏艉段和一个中间段，艏艉段分别连接在中间段纵向的两端；所述艏艉段在纵向上为由中部至两端宽度渐缩的结构，艏艉段的最大宽度处通过曲面圆滑过渡至外端，且艏艉段的外端端部形成弧面，艏艉段的最大宽度处与所述中间段曲面圆滑过渡连接；所述中间段的最大宽度小于艏艉段的最大宽度；四个立柱分别竖直设置在两个下浮体的艏艉段上。In order to solve the above technical problem, the present invention adopts the following technical solution: a medium-deep water semi-submersible drilling platform, comprising two lower floating bodies arranged at intervals, at least four vertical columns respectively disposed vertically on the two lower floating bodies, and supported by each a main hull having a square box structure on the column; each of the lower pontoons includes two raft sections and an intermediate section, the raft sections being respectively connected at both longitudinal ends of the intermediate section; the raft sections are longitudinally a structure in which the width from the middle to the both ends is tapered, the maximum width of the crotch portion is smoothly transitioned to the outer end by the curved surface, and the outer end portion of the crotch portion forms a curved surface, and the maximum width of the crotch portion is opposite to the intermediate portion The curved transition connection of the curved surface; the maximum width of the middle section is smaller than the maximum width of the middle section; the four vertical pillars are respectively vertically disposed on the two sections of the lower floating body.

优选地，所述艏艉段和所述中间段均相对于自身纵向轴线对称，两个艏艉段对称设置在中间段的两端，且艏艉段和中间段的纵向轴线重合。Preferably, the rafter section and the intermediate section are both symmetrical with respect to their longitudinal axis, the two raft sections are symmetrically disposed at both ends of the intermediate section, and the longitudinal axes of the rafter section and the intermediate section coincide.

优选地，所述中间段由一端至另一端等宽，所述中间段的宽度与所述艏艉段的最大宽度的比例为0.60-0.75。Preferably, the intermediate section is equally wide from one end to the other end, and the ratio of the width of the intermediate section to the maximum width of the weir section is 0.60-0.75.

优选地，所述中间段的宽度与所述艏艉段的最大宽度的比例为0.62-0.7。Preferably, the ratio of the width of the intermediate section to the maximum width of the weir section is 0.62-0.7.

优选地，所述中间段的轴向长度与所述艏艉段的轴向长度的比例为0.4-0.5，所述艏艉段的最大宽度处至该艏艉段与所述中间段连接处的轴向距离与艏艉段的最大宽度的比例为1.05-1.15，所述艏艉段的轴向长度与最大宽度的比例为2-2.2，所述艏艉段的最大宽度处距外端端部的距离与艏艉段的最大宽度的比例为1-1.2。Preferably, the ratio of the axial length of the intermediate section to the axial length of the weir section is 0.4-0.5, and the maximum width of the weir section is to the junction of the weir section and the intermediate section The ratio of the axial distance to the maximum width of the cymbal section is 1.05-1.15, the ratio of the axial length to the maximum width of the cymbal section is 2-2.2, and the maximum width of the cymbal section is from the outer end The ratio of the distance to the maximum width of the segment is 1-1.2.

优选地，所述艏艉段的最大宽度处与所述中间段之间由多段圆弧依次连接过渡。Preferably, a transition between the maximum width of the meandering section and the intermediate section is sequentially connected by a plurality of arcs.

优选地，在从所述艏艉段的最大宽度处往所述中间段的方向上，所述多段圆弧包括依次连接的至少两段半径渐大的外凸圆弧和至少两段半径渐小的内凹圆弧。Preferably, in a direction from the maximum width of the segment to the intermediate segment, the plurality of arcs includes at least two arcuate arcs of increasing radius and at least two segments having a decreasing radius The concave arc.

优选地，所述艏艉段的最大宽度处通过多段圆弧圆滑过渡至外端端部，且在往外端方向上，各段圆弧的半径逐渐减小。 Preferably, the maximum width of the shank is smoothly transitioned to the outer end by a plurality of arcs, and the radius of each arc gradually decreases in the outward direction.

优选地，所述艏艉段外端端部圆弧面的半径与艏艉段的最大宽度的比例为0.2-0.3。Preferably, the ratio of the radius of the arc end surface of the outer end end of the cymbal section to the maximum width of the cymbal section is 0.2-0.3.

优选地，所述艏艉段的最大宽度处至外端端部的外轮廓线为半椭圆，艏艉段的最大宽度处通过椭圆弧和至少一段内凹圆弧过渡至所述中间段，且所述椭圆弧与所述半椭圆相连并在同一个椭圆上，所述艏艉段的最大宽度为所述椭圆的短轴。Preferably, the outer contour of the maximum width to the outer end of the cymbal section is a semi-ellipse, and the maximum width of the cymbal section is transitioned to the intermediate section by an elliptical arc and at least a concave arc. The elliptical arc is connected to the semi-ellipse and is on the same ellipse, and the maximum width of the segment is the minor axis of the ellipse.

优选地，所述立柱下端设置于所述下浮体的艏艉段的中部区域，且立柱下端的宽度小于其所在区域处艏艉段的宽度，所述立柱***所述下浮体内，下浮体内在对应于立柱安装处设有独立舱室，该独立舱室的舱壁板与所述立柱的外板形成一体结构。Preferably, the lower end of the column is disposed at a central portion of the rafter portion of the lower floating body, and the width of the lower end of the column is smaller than the width of the raft portion at the region where the column is located, the column is inserted into the lower floating body, and the lower body is correspondingly A separate compartment is provided at the installation of the column, and the bulkhead of the independent compartment forms an integral structure with the outer panel of the column.

优选地，所述主船体的左右舷外板之间的距离小于位于左右舷的两所述立柱的外侧表面之间的距离，使得立柱上端具有突出于主船体的左舷外板或右舷外板的部分。Preferably, the distance between the left and right outer plates of the main hull is less than the distance between the outer surfaces of the two columns on the left and right sides such that the upper end of the column has a port outer panel or a starboard outer panel protruding from the main hull. section.

优选地，所述立柱由下而上延伸至所述主船体的主甲板处；所述主甲板设有四个相对于主船体左右舷外板突出的延伸部，各延伸部覆盖对应立柱的上端。Preferably, the upright extends from bottom to top to the main deck of the main hull; the main deck is provided with four extensions protruding from the left and right outboards of the main hull, each extension covering the upper end of the corresponding column .

优选地，所述下浮体内分隔形成有多个舱室，其中，至少一舱室具有与下浮体的外板相间隔的内壳板，该内壳板与下浮体的外板共同构成该舱室的双层壳体。Preferably, the lower floating body is formed with a plurality of compartments, wherein at least one of the compartments has an inner casing spaced from the outer panel of the lower floating body, the inner casing and the outer panel of the lower floating body together forming a double layer of the compartment case.

优选地，所述下浮体内设有四个具有双层壳体的舱室，四个舱室对称分布于下浮体的两个艏艉段内，且这四个舱室靠近下浮体的中间段。Preferably, the lower floating body is provided with four compartments having a double-layered housing, and the four compartments are symmetrically distributed in the two winding sections of the lower floating body, and the four compartments are close to the middle section of the lower floating body.

优选地，所述钻井平台还设有多个货罐，各货罐分布于所述立柱内；所述货罐竖直设置于所述立柱内，货罐顶端和底端通过支撑结构与立柱连接。Preferably, the drilling platform is further provided with a plurality of cargo tanks, wherein each cargo tank is distributed in the vertical column; the cargo tank is vertically disposed in the vertical column, and the top end and the bottom end of the cargo tank are connected to the vertical column through a support structure .

优选地，所述钻井平台还设有压载水处理器，以对压载水进行净化分离。Preferably, the drilling platform is further provided with a ballast water processor for purifying and separating the ballast water.

优选地，所述压载水处理器包括顺序连接的过滤器、第一蝶阀、压载水处理元件及第二蝶阀。Preferably, the ballast water processor includes a sequentially connected filter, a first butterfly valve, a ballast water treatment element, and a second butterfly valve.

优选地，所述钻井平台还设有废气排放处理装置，以对废气进行净化分离。Preferably, the drilling platform is further provided with an exhaust emission treatment device for purifying and separating the exhaust gas.

优选地，所述废气排放处理装置包括顺序连接的尿素存储柜、尿素滤器、尿素传输泵、尿素计量单元、尿素注射单元和SCR反应器；尿素计量单元的输入端还连接一压缩空气***。Preferably, the exhaust emission treatment device comprises a urea storage cabinet, a urea filter, a urea transfer pump, a urea metering unit, a urea injection unit and an SCR reactor which are sequentially connected; the input end of the urea metering unit is also connected to a compressed air system.

优选地，所述钻井平台还设有水下机器人，所述主船体内设有供水下机器人运载安装及收放的工作平台。Preferably, the drilling platform is further provided with an underwater robot, and the main hull is provided with a working platform for carrying and installing the robot under water supply.

由上述技术方案可知，本发明至少具有如下优点和积极效果：本发明的半潜式钻井平台中采用流线型结构的下浮体，有利于减少钻井平台的拖航及自航阻力，在自航行或拖带航行工况时，降低平台主机或拖轮主机的燃油消耗量，进而降低了作业成本。It can be seen from the above technical solutions that the present invention has at least the following advantages and positive effects: the semi-submersible drilling platform of the present invention adopts a streamlined structure of the floating body, which is beneficial for reducing the towing and self-propelling resistance of the drilling platform, in self-propelling or towing. When sailing conditions, reduce the fuel consumption of the platform host or the tug host, thereby reducing operating costs.

进一步地，该钻井平台中，下浮体呈对称设计，使得垂荡运动幅值响应算子得以降低，进一步改良了平台垂荡性能，以便防止波浪扰动力幅值过大等不利问题的出现，使本发明的钻井平台的可作业海域进一步扩展，适用于各恶劣海域，在更加恶劣的天气及海况条件下仍然能够保证连接其上的立管可靠工作，进而降低了油气钻探开采周期及作业成本。Further, in the drilling platform, the floating body has a symmetrical design, so that the amplitude response operator of the heave motion is reduced, and the platform heave performance is further improved, so as to prevent the occurrence of unfavorable problems such as excessive wave motion amplitude and the like. The rigable sea area of the rig of the invention is further expanded, and is suitable for use in various harsh sea areas, and can ensure the reliable operation of the riser connected thereto under more severe weather and sea conditions, thereby reducing the oil and gas drilling production cycle and operation cost.

附图说明 DRAWINGS

图1是本发明半潜式钻井平台优选实施例的立体结构示意图。1 is a schematic perspective view of a preferred embodiment of a semi-submersible drilling platform of the present invention.

图2是本发明半潜式钻井平台优选实施例的侧面结构示意图，图中省略主甲板上各布置结构。2 is a schematic side view showing a preferred embodiment of the semi-submersible drilling platform of the present invention, in which the arrangement of the main deck is omitted.

图3是本发明图2的左视图，即半潜式钻井平台的艉部结构示意图。3 is a left side view of FIG. 2 of the present invention, that is, a schematic view of the ankle structure of the semi-submersible drilling platform.

图4是本发明图2的A-A视图。Figure 4 is a view taken along line A-A of Figure 2 of the present invention.

图5是本发明半潜式钻井平台优选实施例中下浮体内舱室布置示意图。Figure 5 is a schematic view showing the arrangement of the lower body compartment in the preferred embodiment of the semi-submersible drilling platform of the present invention.

图6是本发明半潜式钻井平台优选实施例中下浮体内关键液舱的布置示意图。Figure 6 is a schematic view showing the arrangement of key tanks in the lower floating body in the preferred embodiment of the semi-submersible drilling platform of the present invention.

图7是本发明图2的B-B视图。Figure 7 is a B-B view of Figure 2 of the present invention.

图8是本发明半潜式钻井平台另一优选实施例中下浮体的结构示意图。Figure 8 is a schematic view showing the structure of a lower floating body in another preferred embodiment of the semi-submersible drilling platform of the present invention.

图9是本发明半潜式钻井平台优选实施例中压载水处理工艺流程图。Figure 9 is a flow chart showing the ballast water treatment process in a preferred embodiment of the semi-submersible drilling platform of the present invention.

图10是本发明半潜式钻井平台优选实施例中废气处理工艺流程图。Figure 10 is a flow chart showing the process of treating exhaust gas in a preferred embodiment of the semi-submersible drilling platform of the present invention.

附图标记说明如下：1、下浮体；101、外板；11、艏艉段；111、外端；12、中间段；14、舱室；14a、关键液舱；14b、舱室；141、舱壁板；141a、内壳板；141b、舱壁板；2、立柱；201、纵向外板；202、横向外板；21、圆角；22、突出部分；3、主船体；31、左舷外板；32、右舷外板；33、主甲板；331、延伸部；34、间甲板；35、下甲板；4、横撑；5、货罐；6、推进器；7、锚泊装置；8、上层建筑；9、起重设备。The reference numerals are as follows: 1. lower floating body; 101, outer plate; 11, stern section; 111, outer end; 12, intermediate section; 14, cabin; 14a, key tank; 14b, cabin; 141, bulkhead Plate; 141a, inner shell plate; 141b, bulkhead plate; 2, column; 201, longitudinal outer plate; 202, transverse outer plate; 21, rounded corner; 22, protruding portion; 3, main hull; 31, port outer plate 32, starboard outer panel; 33, main deck; 331, extension; 34, inter-deck; 35, lower deck; 4, cross bracing; 5, cargo tank; 6, propeller; 7, mooring device; Construction; 9, lifting equipment.

具体实施方式detailed description

体现本发明特征与优点的典型实施方式将在以下的说明中详细叙述。应理解的是本发明能够在不同的实施方式上具有各种的变化，其皆不脱离本发明的范围，且其中的说明及图示在本质上是当作说明之用，而非用以限制本发明。Exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of various modifications in the various embodiments and this invention.

本发明提供一种适合在中深水海域作业的半潜式钻井平台，该钻井平台可以进行油气开采作业，这类平台工作水深在80米-1500米左右，可变载荷在5000-6000吨左右。较优地，本发明所提供的半潜式钻井平台作业时允许海水温度范围为0-32摄氏度，作业是允许环境空气温度范围为负7-正35摄氏度，可在英国北海等海域作业。The invention provides a semi-submersible drilling platform suitable for operation in medium and deep waters. The drilling platform can perform oil and gas mining operations. The working depth of such platforms is about 80-1500 meters, and the variable load is about 5000-6000 tons. Preferably, the semi-submersible drilling platform provided by the invention allows the seawater temperature to range from 0 to 32 degrees Celsius, and the operation allows the ambient air temperature range to be negative 7-35 degrees Celsius, and can be operated in the North Sea and other waters of the United Kingdom.

如无特别说明，下文中涉及的“纵向”均以钻井平台的长度方向为参照，对应地，钻井平台纵向的两端分别称为艏部和艉部；“横向”均以钻井平台的宽度方向为参照，对应地，钻井平台横向的两侧分别称为左舷和右舷。Unless otherwise specified, the “longitudinal” referred to below is based on the length direction of the drilling platform. Correspondingly, the longitudinal ends of the drilling platform are called the crotch and the crotch respectively; the “transverse” is the width direction of the drilling platform. For reference, correspondingly, the lateral sides of the rig are referred to as port and starboard, respectively.

参阅图1至图3，本实施例的半潜式钻井平台主要包括两个下浮体1，竖直设置于下浮体1上的四个立柱2，以及支撑于立柱2上的主船体3。下浮体1沿纵向延伸，两个下浮体1对称地分列于左舷和右舷，两下浮体1平行间隔布置。四个立柱2的下端分别设置在两个下浮体1的艏部和艉部，位于左舷和右舷的相对的两立柱2之间还连接有横撑4，四个立柱2的上端支撑主船体3。必要时，还可以在下浮体1的舯部设置立柱2。Referring to FIGS. 1 to 3 , the semi-submersible drilling platform of the present embodiment mainly includes two lower floating bodies 1 , four vertical columns 2 vertically disposed on the lower floating body 1 , and a main hull 3 supported on the vertical columns 2 . The lower floating body 1 extends in the longitudinal direction, and the two lower floating bodies 1 are symmetrically arranged on the port side and the starboard side, and the two lower floating bodies 1 are arranged in parallel. The lower ends of the four uprights 2 are respectively disposed at the crotch portion and the crotch portion of the two lower floating bodies 1, and the transverse supports 4 are also connected between the opposite two columns 2 on the port side and the starboard side, and the upper ends of the four columns 2 support the main hull 3 . If necessary, the column 2 can also be provided at the crotch portion of the lower floating body 1.

主船体3呈四方形箱型结构，其上根据实际需要布置各类功能装置。立柱2对主船体3的总体重量进行支撑。在作业工况或抗风暴自存工况时，下浮体1完全沉没于海平面以下的海水里，其主要目的是为钻井平台提供整体浮力，并承受环境载荷、工作重量和空船重量。该钻井平台设置有四个推进器6，四个推进器6分别位于两个下浮体1艏部和艉部的底部，各推进器6为全回转推进器，并配以适配的动力定位***，在拖带作业工况通过拖曳缆绳传递拉力。该钻井平台设置的推进器数量较少，因而相应地简化了配套的控制***。The main hull 3 has a square box-shaped structure, on which various functional devices are arranged according to actual needs. The column 2 supports the overall weight of the main hull 3. In the working condition or the anti-storm self-storing condition, the lower floating body 1 is completely sunk at sea level. The main purpose of the seawater is to provide overall buoyancy for the drilling platform and to withstand environmental loads, working weight and empty ship weight. The drilling platform is provided with four propellers 6, four propellers 6 respectively located at the bottom of the two lower floating bodies 1 and the crotch portion, and each propeller 6 is a full-turn propeller with an adapted dynamic positioning system. In the towing operation condition, the pulling force is transmitted through the towing cable. The number of thrusters provided by the rig is small, which simplifies the associated control system accordingly.

结合图2和图4，下浮体1包括两个艏艉段11和一个中间段12，两个艏艉段11分别作为下浮体1的艏部和艉部，两个艏艉段11分别连接在中间段12纵向的两端。下浮体1在竖直方向上为柱体，下浮体1的上表面和下表面为平面，下浮体1的侧面则为竖直的曲面，上表面、下表面分别与侧面之间圆角过渡。从图4所示的下浮体1俯视图上看，艏艉段11在纵向上为由中部至两端宽度渐缩的结构，艏艉段11的外轮廓线为弧形，由多段圆弧或椭圆弧构成。艏艉段11的最大宽度处通过曲面圆滑过渡至外端111即远离中间段12的一端，且外端111端部处还形成圆弧面，即艏艉段11的两侧面在外端111端部处通过圆弧面过渡连接。艏艉段11的最大宽度处与中间段12同样也是曲面圆滑过渡连接，中间段12的最大宽度小于艏艉段11的最大宽度。2 and 4, the lower floating body 1 includes two cymbal segments 11 and an intermediate segment 12, respectively, which serve as the crotch portion and the crotch portion of the lower floating body 1, respectively, and the two cymbal segments 11 are respectively connected The longitudinal ends of the intermediate section 12 are longitudinal. The lower floating body 1 is a cylinder in the vertical direction, the upper surface and the lower surface of the lower floating body 1 are planes, the side surface of the lower floating body 1 is a vertical curved surface, and the upper surface and the lower surface are respectively rounded and rounded. As seen from the top view of the lower floating body 1 shown in FIG. 4, the cymbal section 11 has a structure in which the width of the cymbal section 11 is tapered from the middle to the both ends, and the outer contour line of the cymbal section 11 is curved, and is composed of a plurality of arcs or ellipses. The arc is composed. The maximum width of the segment 11 is smoothly transitioned through the curved surface to the outer end 111, that is, the end away from the intermediate portion 12, and the end portion of the outer end 111 is further formed with a circular arc surface, that is, both sides of the crotch portion 11 are at the end of the outer end 111. It is connected by a circular plane transition. The maximum width of the segment 11 is also a smooth transition of the curved surface as the intermediate segment 12, and the maximum width of the intermediate segment 12 is less than the maximum width of the segment 11.

从纵向上看，下浮体1从端部弧面开始，宽度由小逐渐圆滑过渡加大，而后再逐渐圆滑过渡减小，最终逐渐圆滑过渡加大后再圆滑过渡缩小，在另一端部又形成弧面。下浮体1整体形成骨棒型结构，下浮体1外轮廓线由圆滑曲线构成，下浮体1整体呈流线型，可以减小采用直线连接结构时导致拐角处流线急剧变化、产生漩涡等因素而造成的阻力系数增加，改善流体通过下浮体1区域时的流体运动特性，有利于减小平台的拖航及自航阻力，进而降低主机燃油消耗及作业成本。From the longitudinal direction, the lower floating body 1 starts from the end curved surface, the width is gradually increased from a small and smooth transition, and then gradually becomes smooth and smooth, and finally the smoothing transition becomes larger, then the smooth transition is reduced, and the other end is formed again. Curved surface. The lower floating body 1 integrally forms a bone rod type structure, and the outer contour line of the lower floating body 1 is composed of a smooth curve, and the lower floating body 1 is streamlined as a whole, which can reduce factors such as a sharp change of the flow line at the corner when the straight line connection structure is used, and a vortex is generated. The increase of the drag coefficient improves the fluid movement characteristics of the fluid passing through the region of the lower floating body 1, which is beneficial to reducing the towing and self-propelled resistance of the platform, thereby reducing the fuel consumption and operating cost of the main engine.

进一步地，对于单个下浮体1，采用左右完全对称的结构形式，下浮体1相对于其纵向中心线及横向中心线均对称。即：艏艉段11和中间段12均相对于自身纵向轴线对称，两个艏艉段11对称设置在中间段12的两端，艏艉段11和中间段12的纵向轴线重合。这样可使得垂荡运动幅值响应算子得以降低，以便防止波浪扰动力幅值过大等不利问题的出现，进一步改良了垂荡运动响应性能，同时采用该下浮体的半潜平台的可作业海域也得以扩展，可适用于各恶劣海域，在更加恶劣的天气及海况条件下仍然能够保证连接其上的立管可靠工作，进而降低了油气钻探开采周期及作业成本。Further, for a single lower floating body 1, a left and right completely symmetrical structural form is adopted, and the lower floating body 1 is symmetrical with respect to its longitudinal center line and lateral center line. That is, both the stern section 11 and the intermediate section 12 are symmetrical with respect to their longitudinal axis, and the two sipe sections 11 are symmetrically disposed at both ends of the intermediate section 12, and the longitudinal axes of the rafter section 11 and the intermediate section 12 coincide. This can reduce the amplitude response operator of the heave motion, so as to prevent the occurrence of unfavorable problems such as excessive wave motion amplitude, further improve the response performance of the heave motion, and at the same time, the semi-submersible platform of the lower floating body can be operated. The sea area has also been expanded to be applicable to all kinds of harsh sea areas, and it can still ensure the reliable operation of the riser connected to it under more severe weather and sea conditions, thereby reducing the oil and gas drilling and mining cycle and operating costs.

下浮体1中，中间段12从一端至另一端等宽，即中间段12的宽度W₁₂恒定，较优地，中间段12的宽度W₁₂与艏艉段11的最大宽度W₁₁的比例较优地为0.60-0.75，更优地，为0.62-0.7。在这种比例的结构中，可以使下浮体具有更低的垂荡运动幅值响应算子，更为改良了半潜平台垂荡运动响应性能。以中间段12的宽度W₁₂与艏艉段11的最大宽度W₁₁的比例等于0.62为例，垂向受力较之常规技术浮体而言，在典型周期范围内垂向受力有25％至40％的减幅，相应的垂荡运动响应有20％至35％的减幅。在一实施例中，艏艉段11的最大宽度W₁₁为19m-21m，中间段12的宽度W₁₂为13m-15m。In the lower floating body 1, the intermediate section 12 is equally wide from one end to the other end, that is, the width W _{12 of the} intermediate section 12 is constant, and preferably, the ratio of the width W _{12 of the} intermediate section 12 to the maximum width W ₁₁ of the section 11 is higher. The preferred ground is from 0.60 to 0.75, more preferably from 0.62 to 0.7. In this ratio of structure, the lower floating body can have a lower heave motion amplitude response operator, and the heave motion response performance of the semi-submersible platform is improved. Taking the ratio of the width W _{12 of the} intermediate section 12 to the maximum width W ₁₁ of the section 11 equal to 0.62 as an example, the vertical force is 25% of the vertical force in the typical period range compared to the conventional technical floating body. With a 40% reduction, the corresponding heave motion response has a 20% to 35% reduction. In an embodiment, the maximum width W ₁₁ of the segment 11 is 19m-21m, and the width W ₁₂ of the intermediate segment ₁₂ is 13m-15m.

中间段12的长度L₁₂与艏艉段11的轴向长度L₁₁的比例较优地为0.4-0.5，更优地，为0.45。其中，“轴向长度”是指沿纵向轴线的长度，下同。The ratio of the length L _{12 of the} intermediate section 12 to the axial length L ₁₁ of the weir section 11 is preferably from 0.4 to 0.5, more preferably 0.45. Here, "axial length" means the length along the longitudinal axis, the same below.

艏艉段11的最大宽度处至该艏艉段11与中间段12的连接处的轴向距离L₁₁₂与艏艉段11的最大宽度W₁₁的比例较优地为1.05-1.15，更优地，为1.1。The ratio of the axial distance L ₁₁₂ from the maximum width of the segment 11 to the junction of the segment 11 and the intermediate segment 12 and the maximum width W ₁₁ of the segment 11 is preferably 1.05-1.15, more preferably , is 1.1.

艏艉段11的轴向长度L₁₁与最大宽度W₁₁的比例较优地为2-2.2，更优地，为2.1。The ratio of the axial length L _{11 of the} crotch portion 11 to the maximum width W ₁₁ is preferably from 2 to 2.2, and more preferably to 2.1.

艏艉段11的最大宽度处距外端111端部的距离L₁₁₁与艏艉段11的最大宽度W₁₁的比例较优地为1-1.2，L₁₁₁的数值较优地为20m-25m。The ratio of the distance L ₁₁₁ from the end of the outer end 111 to the maximum width W ₁₁ of the crotch portion 11 of the maximum width of the crotch portion 11 is preferably 1-1.2, and the value of L ₁₁₁ is preferably 20 m to 25 m.

从图4上看，本实施例中，艏艉段11的最大宽度处至外端111端部由多段圆弧圆滑过渡。各段圆弧均为外凸圆弧，较优地，在从艏艉段11的最大宽度处往外端111方向上，各段圆弧的半径逐渐减小。而艏艉段11的外端111端部圆弧面的半径R₁₁₁与艏艉段11的最大宽度W₁₁的比例较优地为0.2-0.3，更优地，为0.26。半径R₁₁₁的数值范围可在5.2m左右。As seen from FIG. 4, in the present embodiment, the maximum width of the cymbal segment 11 to the end of the outer end 111 is smoothly transitioned by a plurality of arcs. Each of the arcs is a convex arc, and preferably, the radius of each arc gradually decreases from the maximum width of the segment 11 toward the outer end 111. The bow and stern sections ₁₁₁ and the ratio of the maximum width W is 11 fore and aft section ₁₁ of the end portion 111 of the outer radius R of the arcuate surface 11 of the end Jiaoyou for 0.2-0.3, more preferably, the 0.26. The value of the radius R ₁₁₁ can be around 5.2 m.

同样从图4上看，艏艉段11的最大宽度处与中间段12之间由多段圆弧依次连接而形成曲面圆滑过渡，从艏艉段11的最大宽度处起，该多段圆弧包括依次相接的至少两段外凸圆弧和至少两段内凹圆弧，在从艏艉段11的最大宽度处往中间段12的方向上，各外凸圆弧的半径渐大，各内凹圆弧的半径渐小。各段圆弧的半径数值范围较优地为20m-51m。Also, as seen from FIG. 4, the maximum width of the segment 11 and the intermediate segment 12 are sequentially connected by a plurality of arcs to form a smooth transition of the curved surface. From the maximum width of the segment 11, the plurality of arcs include At least two outer convex arcs and at least two inner concave arcs are connected, and the radius of each convex arc gradually increases from the maximum width of the cymbal 11 to the intermediate section 12, and each concave The radius of the arc is getting smaller. The radius of each arc has a numerical range of preferably 20m-51m.

艏艉段11的这种结构形式使下浮体1各部分结构形状变化平滑，使得流体通过时具有良好的运动特性。This configuration of the segment 11 smoothes the structural shape of each portion of the lower floating body 1 so that the fluid has good motion characteristics when it passes.

其中，上述“外凸圆弧”及“内凹圆弧”的内外方向以下浮体1为参照，外凸指圆弧的突起方向朝向下浮体1外侧，内凹指圆弧的突起方向朝向下浮体1内侧。The floating body 1 below the inner and outer directions of the "outer convex arc" and the "concave arc" is referred to as the reference, and the convex direction of the outer convex arc is directed toward the outer side of the lower floating body 1, and the convex direction of the inner concave finger is directed toward the lower floating body. 1 inside.

本发明中，通过下浮体各部分形状及尺寸参数的特殊设计，可以将下浮体的阻力系数控制在0.005-0.01之间，相比现有技术通常的0.015-0.024，本发明的结构具有明显的优势。In the present invention, by the special design of the shape and size parameters of each part of the lower floating body, the drag coefficient of the lower floating body can be controlled to be between 0.005 and 0.01, and the structure of the present invention has obvious structure compared with the conventional 0.0115-0.024. Advantage.

参阅图5，下浮体1内分隔形成有多个舱室14，这些舱室14依据功能区分大致有推进器舱、压载舱、泵舱、淡水舱、盐水舱、泥浆舱、钻井水舱、燃油舱，舱室14之间通过舱壁板141相分隔。较优地，对于这些舱室14中部分的关键液舱，采用双层壳体进行保护，为便于明示，在图中将这些关键液舱的标号标为14a，这些关键液舱14a可以包括淡水舱、盐水舱和泥浆舱等。Referring to FIG. 5, a plurality of compartments 14 are formed in the lower floating body 1, and the compartments 14 are roughly divided into a propeller tank, a ballast tank, a pump cabin, a fresh water tank, a salt water tank, a mud tank, a drilling water tank, and a fuel oil tank according to functions. The compartments 14 are separated by a bulkhead 141. Preferably, for some of the critical tanks in these compartments 14, a double-shell is used for protection. For ease of illustration, the key tanks are labeled 14a in the figure, and these critical tanks 14a may include fresh water tanks. , salt water tanks and mud tanks.

具体地，如图6所示，这些关键液舱14a具有与下浮体1的外板101相间隔的内壳板141a，外板101与内壳板141a之间形成一边舱，内壳板141a与下浮体1的外板101共同构成该关键液舱14a侧边的双层壳体。其中，下浮体1的外板101泛指作为下浮体1表层的各结构板。各关键液舱14a的内壳板141a外再设置型材结构(图中未示出)，关键液舱14a内不再设置型材结构。通过双层壳体的保护，当下浮体1遇到意外碰撞破损后，由于这些关键液舱14a的内壳板141a与下浮体1的外板101之间具有一定间隙，降低了外板101和内壳板141a同时破损的可能性，使得发生液体泄漏的可能性可以大大降低。Specifically, as shown in FIG. 6, these key tanks 14a have an inner casing 141a spaced from the outer panel 101 of the lower floating body 1, and an outer compartment 101 and an inner casing 141a form a side compartment, and the inner casing 141a and The outer plates 101 of the lower floating body 1 together constitute a double-layered casing on the side of the critical tank 14a. The outer panel 101 of the lower floating body 1 generally refers to each structural panel which is the surface layer of the lower floating body 1. A profile structure (not shown) is disposed outside the inner casing plate 141a of each of the critical tanks 14a, and no profile structure is disposed in the key tank 14a. By the protection of the double-layered casing, when the lower floating body 1 encounters an accidental collision and breakage, since there is a certain gap between the inner casing plate 141a of the key tank 14a and the outer panel 101 of the lower floating body 1, the outer panel 101 and the inner portion are lowered. The possibility that the shell plate 141a is simultaneously broken, so that the possibility of liquid leakage can be greatly reduced.

对于淡水舱而言，由于淡水舱中的淡水通常用于平台上作业人员的日常饮用及生活用水，非双壳保护的淡水舱舱室中都会有型材结构，由于淡水舱的涂装有特殊要求，型材结构上也需要进行涂装，采用双壳保护设计之后，淡水舱内无型材结构，相应地减少了涂装面积，降低了涂装作业的工作难度及工作量，同时舱室内没有型材也有利于舱室的清洗。同样盐水舱和泥浆舱设置双壳保护后，型材均位于液舱内壳板以外，使用双壳保护设计降低了泄漏后污染环境的概率，同时更利于舱室的清洗，提高了海洋工程的建造效率。For fresh water tanks, since fresh water in fresh water tanks is usually used for daily drinking and domestic water for workers on the platform, there is a profile structure in the fresh water tanks that are not protected by double-shells. Due to the special requirements of the fresh water tanks, Profile knot The structure also needs to be painted. After the double-shell protection design, there is no profile structure in the fresh water tank, which reduces the painting area accordingly, reduces the work difficulty and workload of the painting operation, and the absence of profiles in the cabin is also beneficial. Cleaning of the cabin. Similarly, after the double-shell protection of the salt water tank and the mud tank, the profiles are located outside the shell of the tank. The double-shell protection design reduces the probability of polluting the environment after leakage, and is more conducive to the cleaning of the cabin and improves the construction efficiency of the marine engineering. .

图5所示的实施例中，下浮体1内设有四个具有双层壳体的关键液舱14a，四个关键液舱14a对称分布于下浮体1的两个艏艉段11内，且这四个关键液舱14a靠近下浮体1的中间段12。这四个关键液舱14a位于下浮体1两侧较为突出的位置，具有更大的遭受碰撞的风险，通过采用双层壳体有效地降低了风险。In the embodiment shown in FIG. 5, the lower floating body 1 is provided with four key tanks 14a having a double-layered housing, and the four key tanks 14a are symmetrically distributed in the two jaws 11 of the lower floating body 1, and These four critical tanks 14a are adjacent to the intermediate section 12 of the lower float 1. These four critical tanks 14a are located at the more prominent positions on both sides of the lower floating body 1 and have a greater risk of collision, which effectively reduces the risk by using a double-layered casing.

一并参阅图1至图4，立柱2外形大致为矩形的柱体结构，其横截面为带有圆角的矩形，立柱2外板包括两个相对的纵向外板201和两个相对的横向外板202，纵向外板201与横向外板202之间设置圆角21。立柱2下端设置于下浮体1的艏艉段11的中部区域，立柱2下端的宽度W₂即立柱2的两纵向外板201之间的距离小于其所在区域处艏艉段11的宽度，即：立柱2与下浮体1采用非对齐式的连接方式。Referring to FIG. 1 to FIG. 4 together, the column 2 has a substantially rectangular cylindrical structure with a rectangular cross section, and the outer frame of the column 2 includes two opposite longitudinal outer plates 201 and two opposite lateral directions. The outer plate 202, the longitudinal outer plate 201 and the lateral outer plate 202 are provided with rounded corners 21. Column 2 is provided in the middle region of the lower end of fore and aft section 11 of the body fall, the distance between the lower ends of two vertical uprights width W ₂ that is the pillar outer panel 2 is smaller than the width 201 in their region at the bow and stern sections 11, i.e., The column 2 and the lower floating body 1 are connected in a non-aligned manner.

进一步地，立柱2下端***下浮体1内，如图5所示，下浮体1内在对应于立柱2安装处设有独立舱室14b，该独立舱室14b的舱壁板141b与立柱2的外板201、202形成一体结构。通过这种连接方式，形成更为完整及合理的船体结构形式，使得作为平台船体结构重要节点的立柱2与下浮体1连接处无应力集中显现，疲劳损坏问题也相应比较容易得以解决，提高了平台在恶劣的天气及海况条件下采油作业的安全性。Further, the lower end of the column 2 is inserted into the lower floating body 1. As shown in FIG. 5, the lower floating body 1 is provided with a separate compartment 14b corresponding to the installation of the column 2, and the bulkhead 141b of the independent compartment 14b and the outer panel 201 of the column 2 202 forms an integral structure. Through this connection method, a more complete and reasonable hull structure form is formed, so that the joint between the column 2 and the lower floating body 1 which is an important node of the platform hull structure is free from stress concentration, and the fatigue damage problem is relatively easy to be solved, and the problem is improved. The safety of the platform in oil production under severe weather and sea conditions.

作为一较优的实施方式，可将该钻井平台所承载的货罐5分别布置在各立柱2内。钻井平台的多个货罐5可均匀分布在四个立柱2中，如图4所示，作为一个示例，钻井平台共具有12个货罐5时，在每一立柱2内布置3个货罐5。对于钻井平台而言，需要通过货罐5携带大量的钻井材料，如重晶石、土粉、水泥等，其总重量往往超过一千吨。将货罐5布置于立柱2内，可以使立柱2内部的空间区域得到充分的利用，避免占用较为紧张的甲板面积，同时相对于将货罐5安装于甲板面或主船体3内部的情形，这种布置方式降低了平台的整体中心高度，对改善平台的稳性更为有利。As a preferred embodiment, the cargo tanks 5 carried by the drilling platform can be arranged in the respective columns 2 respectively. A plurality of cargo tanks 5 of the drilling platform can be evenly distributed in the four columns 2, as shown in FIG. 4. As an example, when the drilling platform has a total of 12 tanks 5, three tanks are arranged in each column 2 5. For the drilling platform, a large amount of drilling materials, such as barite, earth powder, cement, etc., need to be carried through the cargo tank 5, and the total weight thereof often exceeds one thousand tons. Arranging the cargo tank 5 in the column 2 allows the space area inside the column 2 to be fully utilized, avoiding occupying a relatively tight deck area, and simultaneously mounting the cargo tank 5 on the deck surface or the interior of the main hull 3, This arrangement reduces the overall center height of the platform and is more beneficial to improve the stability of the platform.

其中，货罐5的顶端和底端各自设计支撑结构(图中未示出)，支撑结构与立柱2的外板201或内舱壁相连接，同时支撑结构承受货罐5在垂直方向所产生的重力以及平台发生横摇或纵摇时所产生的分力。Wherein, the top end and the bottom end of the cargo tank 5 are respectively designed with a supporting structure (not shown), and the supporting structure is connected with the outer panel 201 or the inner bulkhead of the pillar 2, and the supporting structure is subjected to the vertical direction of the cargo tank 5 The gravity and the force generated by the platform when it is rolled or pitched.

参阅图1至图3，立柱2的上端对主船体3进行支撑，在本实施例中，立柱2与主船体3亦为非对齐的连接方式。参阅图7，主船体3的左右舷外板31、32之间的距离W₃小于左右舷的两立柱2的外侧表面之间即左右舷的两立柱2位于外侧的纵向外板201之间的距离D₂，使得立柱2上端具有突出于主船体3的左舷外板31或右舷外板32的突出部分22。位于左舷的两个立柱2的左侧部分突出于主船体3的左舷外板31，位于右舷的两个立柱2的右侧部分突出于主船体3的右舷外板32。其中，左舷外板31和右舷外板32为主船体3四方形箱型结构左右两侧的外板，左舷外板31和右舷外板32竖直设置并沿纵向延伸。Referring to Figures 1 to 3, the upper end of the column 2 supports the main hull 3. In the present embodiment, the column 2 and the main hull 3 are also in a non-aligned connection. Referring to Fig. 7, the distance W ₃ between the left and right

outer plates

31, 32 of the main hull 3 is smaller than between the outer side surfaces of the two uprights 2 of the left and right sides, that is, between the two outer columns 2 of the left and right sides. The distance D _{2 is} such that the upper end of the column 2 has a protruding portion 22 that protrudes from the port outer panel 31 or the starboard outer panel 32 of the main hull 3. The left side portions of the two pillars 2 on the port side protrude from the port outer panel 31 of the main hull 3, and the right side portions of the two pillars 2 on the starboard side protrude from the starboard outer panel 32 of the main hull 3. Among them, the port outer panel 31 and the starboard outer panel 32 are outer panels on the left and right sides of the square hull structure of the main hull 3, and the port outer panel 31 and the starboard outer panel 32 are vertically disposed and extend in the longitudinal direction.

对于相同体积及尺寸的四方形箱型主船体3来讲，本实施例中，左右舷的立柱2的相对距离比现有技术的半潜平台要大，这样可以改善平台的整体稳性，在同样天气及海况条件下，减少了船体发生横倾的角度幅值，同时平台对恶劣天气及海况的适用性也得以提高。在一较优的实施例中，两下浮体1纵向轴线之间的距离为60m-66m，两个下浮体1之间具有较大的间距，从而使得左右舷的立柱2具有相对较大的距离，提高平台的稳性。For the square box type main hull 3 of the same volume and size, in this embodiment, the relative distance of the left and right side columns 2 is larger than that of the prior art semi-submersible platform, so that the overall stability of the platform can be improved. Under the same weather and sea conditions, the angle of inclination of the hull is reduced, and the applicability of the platform to severe weather and sea conditions is also improved. In a preferred embodiment, the distance between the longitudinal axes of the two lower floating bodies 1 is 60m-66m, and the two lower floating bodies 1 have a larger spacing, so that the left and right side columns 2 have a relatively large distance. To improve the stability of the platform.

进一步地，参阅图3，立柱2突出于主船体3左舷外板31或右舷外板32的突出部分22由下而上延伸至主船体3的主甲板33处，与主船体3可靠地连接为一个整体。立柱2与主船体3之间不需要采用额外增加肘板等船体部件的办法来延长连接节点抗疲劳寿命及提高承受应力性能。而与各立柱2的突出部分22相对应地，主船体3的主甲板33设有四个相对于主船体3左舷外板31或右舷外板32突出的延伸部331，各延伸部331覆盖对应立柱2的突出部分22的上端。Further, referring to Fig. 3, the projecting portion 22 of the upright 2 protruding from the outer hull 31 or the starboard outer panel 32 of the main hull 3 extends from bottom to top to the main deck 33 of the main hull 3, and is reliably connected to the main hull 3 as A whole. There is no need to additionally add a hull component such as a bracket to the main hull 2 to extend the fatigue life of the joint and improve the stress resistance. Corresponding to the protruding portion 22 of each of the columns 2, the main deck 33 of the main hull 3 is provided with four extending portions 331 protruding from the outer port outer panel 31 or the starboard outer panel 32 of the main hull 3, and the respective extending portions 331 cover the corresponding portions. The upper end of the protruding portion 22 of the column 2.

较优地，如图1所示，主甲板33的这四个延伸部331上分别布置锚泊装置7，充分利用主甲板33的面积，并合理利用延伸部331突出于主船体3左舷或右舷的结构优势。Preferably, as shown in FIG. 1, the four extensions 331 of the main deck 33 are respectively provided with mooring devices 7, which make full use of the area of the main deck 33 and reasonably utilize the extensions 331 to protrude from the port or starboard side of the main hull 3. Structural advantages.

主船体3的四方形箱型结构提供了钻井平台各功能设备的布置需求，主船体3通过由下而上水平布置的下甲板35、间甲板34、主甲板33等多层甲板分出多层空间，实现不同的功能舱室的分区。如图2所示，主船体3的艏侧外板和艉侧外板不超出下浮体1的艏艉段11外端111端部，可使平台具有较好的稳性，艏侧外板和艉侧外板竖直设置并沿横向延伸，与左舷外板31、右舷外板32一同构成主船体3的四周侧板。The square box structure of the main hull 3 provides the layout requirements of the various functional devices of the drilling platform, and the main hull 3 is divided into multiple layers by a multi-layer deck such as a lower deck 35, an intermediate deck 34, and a main deck 33 which are horizontally arranged from bottom to top. Space to achieve partitioning of different functional compartments. As shown in FIG. 2, the stern side outer panel and the stern side outer panel of the main hull 3 do not extend beyond the end of the outer end 111 of the raft portion 11 of the lower pontoon 1, so that the platform has better stability, and the stern outer panel and The side outer panel is vertically disposed and extends in the lateral direction, and together with the port outer panel 31 and the starboard outer panel 32, constitutes a peripheral side panel of the main hull 3.

主船体3的中部布置井架及钻井设备，用以进行钻井作业。A derrick and drilling equipment are arranged in the middle of the main hull 3 for drilling operations.

主船体3的内部设有供水下机器人运载安装及收放的工作平台，相比于现有技术中将机器人工作平台设置于主甲板左右舷的结构，本发明的这种布置结构可以使得在恶劣天气及海况条件下，水下机器人仍然能够可靠工作，提高了采油作业的经济性。The inside of the main hull 3 is provided with a working platform for carrying and retracting the robot under water supply. Compared with the structure in which the robot working platform is disposed on the left and right sides of the main deck in the prior art, the arrangement of the present invention can make the Under the conditions of weather and sea conditions, underwater robots can still work reliably and improve the economics of oil production.

主船体3的主甲板33上通过设置上层建筑8使作业者可在其中生活、办公及进行辅助性工作，在上层建筑的二层甲板区域设计布置应急发电机组，为重要电气设备提供应急电源。The main deck 33 of the main hull 3 is provided with an upper building 8 to enable the operator to live, work and assist in the work, and an emergency generator set is arranged in the second deck area of the superstructure to provide emergency power for important electrical equipment.

主甲板33上还可布置直升机平台甲板，供直升机的起降，以提高补给、救助和通行能力，直升机平台甲板可搭建于上层建筑上。A helicopter platform deck can also be placed on the main deck 33 for helicopter take-off and landing to improve resupply, rescue and traffic capacity, and the helicopter platform deck can be built on the superstructure.

在主甲板33的左右舷处可各布置一台起重设备9，使作业工况时整体重量分布均匀。起重设备9包括吊机及其基座，较优地，吊机具有可折叠的吊臂，可以使得吊机有充分灵活的作业空间；在吊机停止作业后，对于非常有限的主甲板33存储作业空间而言，可折叠吊臂也节省出了一部分空间，这样就为其它设备的布置提供了前提条件，具有解决工程具体技术问题的实际意义。A lifting device 9 can be arranged on the left and right sides of the main deck 33 to make the overall weight distribution uniform during the working conditions. The lifting device 9 comprises a crane and a base thereof. Preferably, the crane has a foldable boom, which allows the crane to have a sufficiently flexible working space; after the crane is stopped, for a very limited main deck 33 In terms of storage space, the foldable boom also saves a part of the space, which provides preconditions for the arrangement of other equipment and has practical significance for solving the specific technical problems of the project.

主甲板33上还设置水平摆放隔水管固架和管子存储区，供各类管件的摆放。The main deck 33 is also provided with a horizontally placed riser fixing frame and a pipe storage area for the placement of various types of pipe fittings.

图8示意了本发明半潜式钻井平台中另一种结构的下浮体1s，在本实施例中，下浮体1s的艏艉段11s的外轮廓为椭圆形的一部分。具体地，艏艉段11s的最大宽度处至外端111s端部的外轮廓线为半椭圆112s，艏艉段11s的最大宽度处通过椭圆弧113s和至少一段内凹圆弧114s过渡至中间段12s，该椭圆弧113s与半椭圆112s相连并在同一个椭圆EL上，椭圆弧113s的另一端再通过内凹圆弧114s连接中间段12s。艏艉段11s的最大宽度W_11s为椭圆EL的短轴，艏艉段11s的最大宽度处至外端111s端部的距离L_111s为椭圆EL长轴的一半。这种结构中，艏艉段11s的最大宽度处同样分别通过曲面圆滑过渡至外端111s端部和中间段12s，形成流线型的骨棒形结构，同时，艏艉段11s自身为对称结构。本实施例的下浮体1s同样也可减小阻力系数及改善垂荡性能。本实施例下浮体1s各部分的尺寸参数关系及其它特征可参照上文所介绍的第一种结构的下浮体1的相关特征，采用该下浮体1s的钻井平台的其它结构特征也可参照上文的描述。Fig. 8 is a view showing a lower floating body 1s of another structure in the semi-submersible drilling platform of the present invention. In the present embodiment, the outer contour of the weir portion 11s of the lower floating body 1s is a part of an elliptical shape. Specifically, the outer contour of the end portion 11s to the outer end 111s has a semi-ellipse 112s, and the maximum width of the segment 11s transitions to the middle portion through the elliptical arc 113s and at least one concave arc 114s. 12s, the elliptical arc 113s is connected to the semi-ellipse 112s and is on the same ellipse EL, and the other end of the elliptical arc 113s is connected to the intermediate section 12s by the concave arc 114s. The maximum width W _11s of the segment 11s is the minor axis of the ellipse EL, and the distance L _111s from the maximum width of the segment 11s to the end of the outer end 111s is half of the major axis of the ellipse EL. In this structure, the maximum width of the segment 11s is also smoothly transitioned through the curved surface to the end of the outer end 111s and the intermediate portion 12s, forming a streamlined bone-shaped structure, and the segment 11s itself is a symmetrical structure. The lower floating body 1s of the present embodiment can also reduce the drag coefficient and improve the heave performance. For the dimensional parameter relationship and other features of the lower portion of the lower floating body 1s of the present embodiment, reference may be made to the relevant features of the lower floating body 1 of the first structure described above, and other structural features of the drilling platform using the lower floating body 1s may also be referred to Description of the text.

较优地，本发明的半潜式钻井平台中还设有压载水处理器，以对压载水进行净化分离。通过压载水处理器，可预先将压载水舱中用于压载重量的大量压载水进行净化分离及无害化处理，然后才在相关作业海域将经过净化分离处理后的压载水排放至海水中，有效的避免了有害水生物和病原体在不同作业海域之间的互相转移，从而保护了海洋水环境及人体健康。Preferably, the semi-submersible drilling platform of the present invention further comprises a ballast water processor for purifying and separating the ballast water. The ballast water processor can pre-purify and separate a large amount of ballast water used in the ballast tank for the ballast weight, and then the ballast water after purification and separation in the relevant working waters. Discharge into seawater, effectively avoiding the transfer of harmful aquatic organisms and pathogens between different working sea areas, thus protecting the marine water environment and human health.

如图9所示，压载水从海底门经过蝶阀进入压载管路后，首先经泥沙滤器进行初步过滤，除去大颗粒泥沙、杂质，然后经过蝶阀，通过压载泵将压载水经三通阀后泵入压载水处理器，压载水处理器包括顺序连接的过滤器、蝶阀、压载水处理元件及蝶阀，经过该压载水处理器处理后的无害压载水再进入压载舱。通过该压载水处理器对压载水在进入压载舱前进行预处理，将有害生物、细菌杀灭，因此压载舱内的压载水可以满足海洋环境要求，以便随时排放至海水中，而不必在外海进行压载水置换排放。As shown in Fig. 9, after the ballast water enters the ballast pipeline from the submarine door through the butterfly valve, it is firstly filtered by the sediment filter to remove large particles of sediment and impurities, and then passed through the butterfly valve to pass the ballast water through the ballast pump. After being pumped into the ballast water processor via the three-way valve, the ballast water processor comprises a filter, a butterfly valve, a ballast water treatment component and a butterfly valve which are sequentially connected, and the harmless ballast water treated by the ballast water processor Then enter the ballast tank. The ballast water processor pre-treats the ballast water before entering the ballast tank to kill harmful organisms and bacteria, so the ballast water in the ballast tank can meet the requirements of the marine environment, so that it can be discharged into the seawater at any time. Without having to carry out ballast water displacement emissions in the open sea.

另外，较优地，该半潜式钻井平台中还布置有废气排放处理装置，可预先将钻井平台的主柴油发电机组运转过程中所产生的燃油残余物中的有害物质(例如：氮氧化物等)，进行净化分离及无害化处理，然后再将经过净化分离处理后的燃油废气排放至相关作业海域的大气中，排放的废气经过处理后相对洁净，减轻了海洋空气环境的污染程度。In addition, preferably, the semi-submersible drilling platform is also provided with an exhaust gas discharge treatment device, which can pre-empt harmful substances in the fuel residue generated during the operation of the main diesel generator set of the drilling platform (for example: nitrogen oxides) Etc., purification separation and harmless treatment, and then the fuel exhaust gas after purification and separation is discharged into the atmosphere of the relevant working sea area, the exhaust gas is relatively clean after treatment, and the pollution degree of the marine air environment is reduced.

参阅图10，该废气排放处理装置对废气处理的工艺流程为：首先尿素存储柜内的尿素经尿素滤器处理，然后经传输泵泵入尿素计量单元，与此同时部分压缩空气也从压缩空气***进入尿素计量单元，二者混合以后进入尿素注射单元，然后尿素与压缩空气的混合物以一定压力喷射进入SCR反应器，并与高温主机排气进行化学反应，将主机排气内的氮氧化合物分解为氮气和水，最后排入海洋大气。Referring to FIG. 10, the process of treating the exhaust gas by the exhaust emission treatment device is: first, the urea in the urea storage cabinet is treated by the urea filter, and then pumped into the urea metering unit via the transfer pump, and at the same time, part of the compressed air is also from the compressed air system. Entering the urea metering unit, the two are mixed into the urea injection unit, and then the mixture of urea and compressed air is injected into the SCR reactor at a certain pressure, and chemically reacted with the exhaust of the high temperature host to decompose the nitrogen oxides in the exhaust gas of the main unit. It is nitrogen and water and is finally discharged into the ocean atmosphere.

虽然已参照几个典型实施方式描述了本发明，但应当理解，所用的术语是说明和示例性、而非限制性的术语。由于本发明能够以多种形式具体实施而不脱离发明的精神或实质，所以应当理解，上述实施方式不限于任何前述的细节，而应在随附权利要求所限定的精神和范围内广泛地解释，因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。 While the invention has been described with respect to the preferred embodiments the embodiments The present invention may be embodied in a variety of forms without departing from the spirit or scope of the invention. It is to be understood that the invention is not limited to the details of the invention. All changes and modifications that come within the scope of the claims or the equivalents thereof are intended to be covered by the appended claims.

Claims

一种中深水半潜式钻井平台，其特征在于，包括：A medium-deepwater semi-submersible drilling platform characterized by comprising:

间隔设置的两个下浮体，各下浮体包括两个艏艉段和一个中间段，艏艉段分别连接在中间段纵向的两端；所述艏艉段在纵向上为由中部至两端宽度渐缩的结构，艏艉段的最大宽度处通过曲面圆滑过渡至外端，且艏艉段的外端端部形成弧面，艏艉段的最大宽度处与所述中间段曲面圆滑过渡连接；所述中间段的最大宽度小于艏艉段的最大宽度；Two lower floating bodies are arranged at intervals, each lower floating body comprises two cymbal segments and one intermediate segment, the cymbal segments are respectively connected at the longitudinal ends of the intermediate segment; the cymbal segments are longitudinally from the middle to the ends The tapered structure, the maximum width of the segment is smoothly transitioned to the outer end by the curved surface, and the outer end of the segment is formed into a curved surface, and the maximum width of the segment is smoothly connected with the curved surface of the intermediate segment; The maximum width of the middle section is smaller than the maximum width of the middle section;

至少四个立柱，四个立柱分别竖直设置在两个下浮体的艏艉段上；At least four columns, four columns are vertically disposed on the two sections of the lower floating body;

主船体，呈四方形箱型结构，支撑于所述各立柱上。The main hull has a square box-shaped structure and is supported on the respective columns.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述艏艉段和所述中间段均相对于自身纵向轴线对称，两个艏艉段对称设置在中间段的两端，且艏艉段和中间段的纵向轴线重合。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein the stern section and the intermediate section are both symmetrical with respect to their longitudinal axis, and the two sipe sections are symmetrically disposed at both ends of the intermediate section. And the longitudinal axes of the middle and middle sections coincide.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述中间段由一端至另一端等宽，所述中间段的宽度与所述艏艉段的最大宽度的比例为0.60-0.75。A medium-deepwater semi-submersible drilling platform according to claim 1, wherein said intermediate section is equally wide from one end to the other end, and the ratio of the width of said intermediate section to the maximum width of said weir section is 0.60. -0.75.
根据权利要求3所述的中深水半潜式钻井平台，其特征在于，所述中间段的宽度与所述艏艉段的最大宽度的比例为0.62-0.7。The medium-deepwater semi-submersible drilling platform according to claim 3, wherein a ratio of a width of the intermediate section to a maximum width of the weir section is 0.62-0.7.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述中间段的轴向长度与所述艏艉段的轴向长度的比例为0.4-0.5，所述艏艉段的最大宽度处至该艏艉段与所述中间段连接处的轴向距离与艏艉段的最大宽度的比例为1.05-1.15，所述艏艉段的轴向长度与最大宽度的比例为2-2.2，所述艏艉段的最大宽度处距外端端部的距离与艏艉段的最大宽度的比例为1-1.2。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein a ratio of an axial length of the intermediate section to an axial length of the weir section is 0.4-0.5, The ratio of the axial distance from the maximum width to the junction of the weir and the intermediate section to the maximum width of the weir is 1.05-1.15, and the ratio of the axial length to the maximum width of the weir is 2- 2.2. The ratio of the distance from the outer end to the maximum width of the maximum width of the segment is 1-1.2.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述艏艉段的最大宽度处与所述中间段之间由多段圆弧依次连接过渡。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein a maximum width of the rafter section and a transition between the intermediate sections are sequentially connected by a plurality of arcs.
根据权利要求6所述的中深水半潜式钻井平台，其特征在于，在从所述艏艉段的最大宽度处往所述中间段的方向上，所述多段圆弧包括依次连接的至少两段半径渐大的外凸圆弧和至少两段半径渐小的内凹圆弧。The medium-deepwater semi-submersible drilling platform according to claim 6, wherein the plurality of arcs include at least two connected in sequence in a direction from the maximum width of the segment to the intermediate segment A convex arc having a gradually increasing radius of the segment and at least two concave arcs having a gradually smaller radius.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述艏艉段的最大宽度处通过多段圆弧圆滑过渡至外端端部，且在往外端方向上，各段圆弧的半径逐渐减小。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein the maximum width of the raft section is smoothly transitioned to the outer end portion by a plurality of circular arcs, and in the outward direction, the segments are rounded. The radius of the arc gradually decreases.
根据权利要求8所述的中深水半潜式钻井平台，其特征在于，所述艏艉段外端端部圆弧面的半径与艏艉段的最大宽度的比例为0.2-0.3。The medium-deepwater semi-submersible drilling platform according to claim 8, wherein the ratio of the radius of the arcuate surface of the outer end portion of the crotch portion to the maximum width of the crotch segment is 0.2-0.3.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述艏艉段的最大宽度处至外端端部的外轮廓线为半椭圆，艏艉段的最大宽度处通过椭圆弧和至少一段内凹圆弧过渡至所述中间段，且所述椭圆弧与所述半椭圆相连并在同一个椭圆上，所述艏艉段的最大宽度为所述椭圆的短轴。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein the outer contour of the maximum width to the outer end of the cymbal section is a semi-ellipse, and the maximum width of the cymbal section is elliptical. An arc and at least one concave arc transition to the intermediate segment, and the elliptical arc is coupled to the semi-ellipse and on the same ellipse, the maximum width of the segment being the minor axis of the ellipse.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述立柱下端设置于所述下浮体的艏艉段的中部区域，且立柱下端的宽度小于其所在区域处艏艉段的宽度，所述立柱***所述下浮体内，下浮体内在对应于立柱安装处设有独立舱室，该独立舱室的舱壁板与所述立柱的外板形成一体结构。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein the lower end of the column is arranged In the middle portion of the rafter portion of the lower floating body, and the width of the lower end of the column is smaller than the width of the raft portion at the region where the column is located, the column is inserted into the lower floating body, and the lower floating body is provided with a separate compartment corresponding to the column installation. The bulkhead of the independent compartment forms an integral structure with the outer panel of the upright.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述主船体的左右舷外板之间的距离小于位于左右舷的两所述立柱的外侧表面之间的距离，使得立柱上端具有突出于主船体的左舷外板或右舷外板的部分。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein a distance between left and right outer plates of the main hull is smaller than a distance between outer side surfaces of two of the columns on the left and right sides, such that The upper end of the column has a portion that protrudes from the portboard outer panel or the starboard outer panel of the main hull.
根据权利要求12所述的中深水半潜式钻井平台，其特征在于，所述立柱由下而上延伸至所述主船体的主甲板处；所述主甲板设有四个相对于主船体左右舷外板突出的延伸部，各延伸部覆盖对应立柱的上端。The medium-deepwater semi-submersible drilling platform according to claim 12, wherein the upright extends from bottom to top to the main deck of the main hull; the main deck is provided with four relative to the main hull An extension of the outboard plate, each extension covering an upper end of the corresponding column.
根据权利要求1所述的中深水半潜式钻井平台，其特征在于，所述下浮体内分隔形成有多个舱室，其中，至少一舱室具有与下浮体的外板相间隔的内壳板，该内壳板与下浮体的外板共同构成该舱室的双层壳体。The medium-deepwater semi-submersible drilling platform according to claim 1, wherein the lower floating body is formed with a plurality of compartments, wherein at least one of the compartments has an inner casing spaced from an outer panel of the lower floating body, The inner shell plate and the outer panel of the lower float body together form a double-layered shell of the compartment.
根据权利要求14所述的中深水半潜式钻井平台，其特征在于，所述下浮体内设有四个具有双层壳体的舱室，四个舱室对称分布于下浮体的两个艏艉段内，且这四个舱室靠近下浮体的中间段。The medium-deepwater semi-submersible drilling platform according to claim 14, wherein the lower floating body is provided with four compartments having a double-layered housing, and the four compartments are symmetrically distributed in two sections of the lower floating body. And the four compartments are close to the middle section of the lower float.
根据权利要求1-15任一项所述的中深水半潜式钻井平台，其特征在于，所述钻井平台还设有多个货罐，各货罐分布于所述立柱内；所述货罐竖直设置于所述立柱内，货罐顶端和底端通过支撑结构与立柱连接。The medium and deep water semi-submersible drilling platform according to any one of claims 1 to 15, wherein the drilling platform is further provided with a plurality of cargo tanks, wherein each cargo tank is distributed in the vertical column; Vertically disposed in the column, the top end and the bottom end of the container are connected to the column through a support structure.
根据权利要求1-15任一项所述的中深水半潜式钻井平台，其特征在于，所述钻井平台还设有压载水处理器，以对压载水进行净化分离。The medium and deep water semi-submersible drilling platform according to any one of claims 1 to 15, characterized in that the drilling platform is further provided with a ballast water processor for purifying and separating the ballast water.
根据权利要求17所述的中深水半潜式钻井平台，其特征在于，所述压载水处理器包括顺序连接的过滤器、第一蝶阀、压载水处理元件及第二蝶阀。The medium-deepwater semi-submersible drilling platform according to claim 17, wherein the ballast water processor comprises a sequentially connected filter, a first butterfly valve, a ballast water treatment element, and a second butterfly valve.
根据权利要求1-15任一项所述的中深水半潜式钻井平台，其特征在于，所述钻井平台还设有废气排放处理装置，以对废气进行净化分离。The medium and deep water semi-submersible drilling platform according to any one of claims 1 to 15, characterized in that the drilling platform is further provided with an exhaust gas discharge treatment device for purifying and separating the exhaust gas.
根据权利要求19所述的中深水半潜式钻井平台，其特征在于，所述废气排放处理装置包括顺序连接的尿素存储柜、尿素滤器、尿素传输泵、尿素计量单元、尿素注射单元和SCR反应器；尿素计量单元的输入端还连接一压缩空气***。The medium-deepwater semi-submersible drilling platform according to claim 19, wherein the exhaust emission treatment device comprises a urea storage cabinet, a urea filter, a urea transfer pump, a urea metering unit, a urea injection unit, and an SCR reaction sequentially connected. The input of the urea metering unit is also connected to a compressed air system.
根据权利要求1-15任一项所述的中深水半潜式钻井平台，其特征在于，所述钻井平台还设有水下机器人，所述主船体内设有供水下机器人运载安装及收放的工作平台。 The medium and deep water semi-submersible drilling platform according to any one of claims 1 to 15, wherein the drilling platform is further provided with an underwater robot, and the main hull is provided with a water supply robot to carry and install and retract Work platform.