WO2022226908A1 - 一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台 - Google Patents

一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台 Download PDF

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WO2022226908A1
WO2022226908A1 PCT/CN2021/091070 CN2021091070W WO2022226908A1 WO 2022226908 A1 WO2022226908 A1 WO 2022226908A1 CN 2021091070 W CN2021091070 W CN 2021091070W WO 2022226908 A1 WO2022226908 A1 WO 2022226908A1
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drilling
platform
column
main deck
deck
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PCT/CN2021/091070
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English (en)
French (fr)
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刘大辉
古德梅斯塔德欧维•托比亚斯
程鹏
白勇
滕瑶
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浙江大学
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Priority to PCT/CN2021/091070 priority Critical patent/WO2022226908A1/zh
Publication of WO2022226908A1 publication Critical patent/WO2022226908A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices

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  • the invention relates to the field of uniquely arranged semi-submersible drilling platforms and marine engineering equipment, in particular to a semi-submersible drilling platform with a side arrangement of a drilling frame and a platform column structure protecting the drilling frame.
  • the riser system is an important part of the drilling and transportation operation of the platform in the ice area.
  • the splash zone will inevitably collide directly with the moving sea ice, which will easily induce structural damage to the drilling riser, thus affecting the riser system.
  • the safety and integrity of the riser pose a great challenge to the design and operation of the riser.
  • the additional anti-icing structure of the conventional type of column and riser of the platform is as follows:
  • a certain inverted triangular structure is attached to the column structure, and an inclined ice-resistant structure is attached below the moon pool.
  • the platform above the inverted triangular structure is prone to snowfall accumulation, and ice debris is easily formed between the bottom and the column.
  • this form of ice-resistant structure will cause ice to break into the lower waters of the platform, which will affect the lower structure, mooring system, Potential damage risks from dynamic positioning systems and drilling or production systems.
  • this application now proposes a new design scheme, that is, the drilling system is arranged above a column of the semi-submersible platform, and the riser can enter the seawater through the column and the bottom of the lower floating body to start drilling. , which can effectively protect the drilling system from the ice load and ensure the safety of the operation; at the same time, through the innovative layout scheme, the living area can be arranged above the diagonal column of the drilling system, making the living area principle dangerous area and serious noise and vibration In addition, it can reduce the need to open a moon pool in the center of the traditional design deck box and increase the deck area.
  • the main purpose of the present invention is to propose a new, safer and more efficient dedicated Arctic offshore oil and gas resource exploration and development equipment through invention and innovation.
  • the purpose of the present invention is to propose a semi-submersible drilling platform in which the drilling frame is arranged on the main deck directly above the column in view of the deficiencies of the prior art.
  • the layout design uses the column structure to protect the original exposed riser system, and improves the operation performance of the entire platform.
  • the effective layout area of the deck is increased, the effective distance between the drilling area and the living area is increased, and the living comfort and safety are improved. safety.
  • a semi-submersible drilling platform with a drilling frame arranged on the main deck just above the column, the platform includes a drilling frame, a buoy providing buoyancy, a deck box providing operating space, uprights, cross braces;
  • the upright column is used to connect the buoy and the deck box, the deck box has a square main deck, and the drilling rig is arranged at a corner of the main deck;
  • the buoy is located under the semi-submersible drilling platform and sinks into the water in working state to provide buoyancy for the platform; the column partially sinks into the water to provide partial buoyancy for the platform; the deck box is always above the water surface; the cross brace Fixed connection with uprights on starboard and starboard;
  • the drilling rig arranged on the main deck directly above the column has a drilling riser to provide drilling functions.
  • the drilling riser enters the seawater through the moonpool space of the column and the buoy below to reach the seabed for drilling operations.
  • the riser provides protection from ice floe collisions, preventing the adverse effects of ice loads.
  • the drilling platform further includes a drilling material stacking supply area, and the drilling material stacking supply area is adjacent to the drilling frame arranged on the main deck directly above the column.
  • a mud area, a bulk material area, a drill pipe and a riser area, etc. are arranged on the drilling material stacking supply area, and a catwalk and a folding arm crane are arranged at the same time to provide support for drilling operations.
  • the drilling platform also includes a living area; the living area is arranged in an L-shape above the vertical column diagonally to the drilling frame, to improve the comfort and safety of the living environment, and to provide operators on the platform. Residential rest use.
  • deck box provides space for the arrangement of other functional modules during the operation of the drilling platform and space for personnel living activities.
  • cross brace sinks into the water in the working state, and emerges from the water in the towing state.
  • a deck crane on the main deck which is used for the hoisting of materials on the deck and the hoisting service of supplying ships.
  • the present invention is a semi-submersible drilling platform that can carry out drilling operations in the Arctic icy sea area, and has the following advantages:
  • the drilling riser can pass through the column and buoy below it and enter the seawater, and the original exposed riser system can be eliminated by using the column and buoy structure.
  • the riser system is protected from collision with the sea ice on the surface of the water part. And improve the performance of the entire platform.
  • the drilling frame By arranging the drilling frame diagonally with the living area, the effective distance between the drilling area and the living area is increased, the adverse effects of noise, vibration, harmful gas dust, blowout and other dangerous events in the drilling area on the living area are reduced, and the living area is improved. Rest comfort, health and safety.
  • the drilling rig By arranging the drilling rig at a corner of the deck box, the plan of opening the moon pool in the central area of the deck box can be avoided, the continuity of the deck box structure is ensured, the structural strength is beneficial, and the weight of the deck box structure can be reduced. At the same time, the effective layout area of the main deck is increased.
  • Figure 1 is a front stern view of a semi-submersible drilling platform
  • Figure 2 is a starboard view of the semi-submersible drilling platform
  • Fig. 3 is the top view schematic diagram of semi-submersible drilling platform
  • 1-drilling rig 2-buoy; 3-deck box; 4-column; 5-cross brace; 6-living area; 7-deck crane; 8-drilling material stacking supply area; 9-main deck; 10-drilling riser; 11-seawater; 12-seabed.
  • the present invention provides a semi-submersible drilling platform in which a drilling frame is arranged on the main deck directly above the column, the platform includes a drilling frame 1, a buoy 2 providing buoyancy, and a deck providing operating space Box 3, column 4, cross brace 5, living area 6, drilling material stacking supply area 8;
  • the column 4 is used to connect the buoy 2 and the deck box 3, the deck box 3 has a square main deck 9, the drilling rig 1 is arranged at a corner of the main deck 9; the main deck 9 also has a deck Crane 7, used for hoisting materials on deck and supplying ship materials hoisting services.
  • the buoy 2 is located below the semi-submersible drilling platform and sinks into the water in the working state to provide buoyancy for the platform; the column 4 partially sinks into the water to provide partial buoyancy for the platform, and connects the deck box 3 and the buoy 2; the The deck box 3 is always above the water surface, providing the arrangement space for other functional modules and the personnel living and operating space during the operation of the drilling platform, so the platform is called a semi-submersible platform; The sailing state surfaced, and it was fixedly connected with the upright column 4 on the starboard and starboard;
  • the drilling frame 1 arranged on the main deck just above the column has a drilling riser 10 to provide drilling function, and the drilling riser 10 enters the seawater 11 through the moonpool space of the column 4 and the buoy 2 below to reach the seabed 12 for drilling operations,
  • the structure of the column 4 and the buoy 2 provides protection for the drilling riser to avoid the collision of floating ice and prevent the adverse effect of ice load;
  • the drilling material stacking supply area 8 is adjacent to the drilling frame 1 arranged on the main deck directly above the column, and the drilling material stacking supply area 8 is arranged with a mud area, a bulk material area, a drill pipe and a riser area, etc., which are arranged at the same time.
  • the living area 6 is arranged above the column 4 diagonally to the drilling rig 1, and provides living and rest for the operators on the platform.
  • the living area 6 It is arranged in an L shape and is arranged diagonally with the area where the drilling rig 1 is located to improve the comfort and safety of the living environment.
  • the invention adopts a design method in which the drilling frame is arranged above a certain column, and uses the column and the buoy structure to protect the drilling riser to prevent the impact of floating ice, so that the semi-submersible drilling platform has the buoyancy ability for drilling operations in icy sea areas .
  • the drilling rig can be arranged on the port bow or starboard bow, port stern, starboard stern, or above the column on the port or starboard side of the ship.
  • the drilling riser enters the seawater through the column under the rig and the moonpool space designed by the buoy. Drilling on the seabed avoids the collision of floating ice on the riser system and ensures the safety of drilling operations.
  • the living area can be arranged diagonally with the drilling rig on the main deck to increase the effective distance between the drilling area and the living area, and reduce the noise, vibration, harmful gas dust, blowout and other dangerous events in the drilling area to the living area. Adverse effects, improve the comfort, health and safety of personnel living and resting.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
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  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，该平台包括提供浮力的浮筒（2），连接浮筒（2）和甲板盒（3）的立柱（4），提供操作空间的甲板盒（3），侧面布置的钻井架（1），与钻井架（1）对角位置成L型布置的生活区（6），钻井立管（10）穿过立柱（4）和浮筒（2）中间设置的月池，通过立柱（4）和浮筒（2）结构保护钻井或生产立管等不被浮冰碰撞；该钻井平台通过将钻井架（1）布置在平台四个角的一个立柱（4）上方的主甲板（9）上，使得钻井立管（10）可以穿过其下方的立柱（4）和浮筒（2）后进入海水中，利用立柱（4）和浮筒（2）结构对原有裸露的立管系统进行保护，避免了水面部分海冰的碰撞，从而对立管系统提供了保护，并提升了整个平台的作业性能。

Description

一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台 技术领域
本发明涉及独特布置的半潜式钻井平台和海洋工程装备领域，尤其涉及一种钻井架侧面布置，通过平台立柱结构保护钻井架的半潜式钻井平台。
背景技术
北极地区作为全球重要的油气资源储备基地，受到越来越多国家的关注和重视。常规海上钻井平台是海上油气勘探开发必不可少的装备，然而其在参与北极海上油气资源的开发过程将面临着巨大的挑战和考验，需要突破一系列关键技术并进行特殊设计，才能保障其在北极海域的安全高效作业。其中，严寒和海冰等因素给北极开发带来一系列技术难题，特别是对钻采装备在极端气候下的性能提出了极高要求。
立管系统作为冰区平台钻井输送作业的重要组成部分，在极地环境下其飞溅区不可避免地会与运动的海冰发生直接碰撞，容易诱使钻井立管发生结构破坏，从而影响立管系统的安全性和完整性，给立管的设计和运行提出了极大的挑战。
无论在北极进行开发的海洋工程平台还是在北极航线上航行的船只，必备的能力就是抗冰，本型具有立柱抗冰和立管保护结构的抗冰型半潜式平台可用于冰区钻井、生产等，具有重要潜在价值。
平台的常规型式的立柱及立管附加抗冰结构情况如下：
在立柱结构上附加了一定的倒三角形结构，及在月池下方附加倾斜的抗冰结构。这种倒三角形结构上方平台容易形成降雪累积、下方与立柱间容易形成碎冰积冰，同时，此种形式的抗冰结构会导致冰破碎后进入平台的下部水域，对下部结构、锚泊系统、动力定位系统及钻井或生产系统造成潜在的破坏风险。
经过不断地调研和研究探索，本申请现提出一种全新的设计方案，即将钻井系统布置在半潜式平台的一个立柱的上方，立管等可以通过立柱和下浮体的下方进入海水中开始钻井，这样可以有效保护好钻井系统不受冰载荷的作用，保障作业安全；同时通过创新的布置方案，可以将生活区布置在钻井系统对角的立柱上方，使得居住区原理危险区和噪声振动严重区域，提高人居条件；另外可以减少传统设计甲板盒中央需要开月池的需要，增加甲板面积。
因为环境的恶劣程度和危险性，人类对北极的海上油气资源的勘探开发开始较晚，专用的装备较少，很多装备利用极端的窗口期前往北极作业，过程中出现了很多事故，这对北极极为脆弱的环境造成了不可估量的破坏。通过发明创新提出新的更为安全高效的专用北极海 上油气资源勘探开发装备是本发明的主要目的。
发明内容
本发明目的在于针对现有技术的不足，提出一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，本发明主要针对北极海面浮冰对平台钻井系统的不利影响，通过独特的布置设计，利用立柱结构对原有裸露的立管系统进行保护，并提升了整个平台的作业性能，同时提升甲板的有效布置面积，增大钻井区域与居住区的有效距离，提高居住舒适度和安全性。
本发明的目的是通过以下技术方案来实现的：一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，该平台包括钻井架、提供浮力的浮筒、提供操作空间的甲板盒、立柱、横撑；
所述立柱用于连接浮筒和甲板盒，所述甲板盒上具有方形的主甲板，所述钻井架布置在主甲板的一角；
所述浮筒位于半潜式钻井平台下方，工作状态下沉入水中，为平台提供浮力；所述立柱部分沉入水中，为平台提供部分浮力；所述甲板盒始终高出水面；所述横撑与左右舷的立柱固定连接；
布置在立柱正上方主甲板上的钻井架具有钻井立管，提供钻井功能，所述钻井立管通过立柱及下方浮筒的月池空间进入海水抵达海床进行钻井作业，通过立柱及浮筒结构对钻井立管提供保护避免浮冰碰撞，防止冰载荷的不利作用。
进一步地，所述钻井平台还包括钻井物料堆放供应区，所述钻井物料堆放供应区与立柱正上方主甲板上布置的钻井架相邻。
进一步地，所述钻井物料堆放供应区上布置有泥浆区、散料区、钻杆和立管区等，同时布置有猫道和折臂吊等，为钻井作业提供支持。
进一步地，所述钻井平台还包括生活区；所述生活区呈L型布置于与钻井架的对角方位的立柱上方，用于提高居住环境的舒适度和安全性，为平台上作业人员提供居住休息使用。
进一步地，所述甲板盒提供钻井平台作业时的其他功能模块的布置空间及人员居住活动操作空间。
进一步地，所述横撑工作状态下沉入水中，拖航状态浮出水面。
进一步地，所述主甲板上上还具有甲板吊机，用于甲板上物资的吊运及供应船只物资吊运服务。
本发明的有益效果：本发明为一种可以在北极有冰海域开展钻井作业的半潜式钻井平台，具有以下优点：
通过将钻井架布置在平台四个角的一个立柱上方的主甲板上，使得钻井立管可以穿过其 下方的立柱和浮筒后进入海水中，利用立柱和浮筒结构对原有裸露的立管系统进行保护，避免了水面部分海冰的碰撞，从而对立管系统提供了保护。并提升了整个平台的作业性能。
通过将钻井架与生活区对角布置，增加了钻井区域与居住区的有效距离，减少了钻井区域的噪声、振动、有害气体粉尘、井喷等危险事件对生活区的不利影响，提高了人员居住休息的舒适度、健康和安全性。
通过钻井架在甲板盒一个角落布置的方案，可以避免在甲板盒中央区域开月池的方案，保证了甲板盒结构的连续性，有利于结构强度，可以降低甲板盒结构重量。同时提升了主甲板的有效布置面积。
附图说明
图1为半潜式钻井平台的正视艉视图；
图2为半潜式钻井平台的右舷视图；
图3为半潜式钻井平台的俯视示意图；
图中，1-钻井架；2-浮筒；3-甲板盒；4-立柱；5-横撑；6-生活区；7-甲板吊机；8-钻井物料堆放供应区；9-主甲板；10-钻井立管；11-海水；12-海床。
具体实施方式
以下结合附图对本发明具体实施方式作进一步详细说明。
如图1至图3所示，本发明提供的一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，该平台包括钻井架1、提供浮力的浮筒2、提供操作空间的甲板盒3、立柱4、横撑5、生活区6、钻井物料堆放供应区8；
所述立柱4用于连接浮筒2和甲板盒3，所述甲板盒3上具有方形的主甲板9，所述钻井架1布置在主甲板9的一角；所述主甲板上9上还具有甲板吊机7，用于甲板上物资的吊运及供应船只物资吊运服务。
所述浮筒2位于半潜式钻井平台下方，工作状态下沉入水中，为平台提供浮力；所述立柱4部分沉入水中，为平台提供部分浮力，并连接甲板盒3与浮筒2；所述甲板盒3始终高出水面，提供钻井平台作业时的其他功能模块的布置空间及人员居住活动操作空间，因此平台称之为半潜式平台；所述横撑5工作状态下沉入水中，拖航状态浮出水面，与左右舷的立柱4固定连接；
布置在立柱正上方主甲板上的钻井架1具有钻井立管10，提供钻井功能，所述钻井立管10通过立柱4及下方浮筒2的月池空间进入海水11抵达海床12进行钻井作业，通过立柱4及浮筒2结构对钻井立管提供保护避免浮冰碰撞，防止冰载荷的不利作用；
所述钻井物料堆放供应区8与立柱正上方主甲板上布置的钻井架1相邻，所述钻井物料 堆放供应区8上布置有泥浆区、散料区、钻杆和立管区等，同时布置有猫道和折臂吊等，为钻井作业提供支持；所述生活区6布置于与钻井架1的对角方位的立柱4上方，为平台上作业人员提供居住休息使用，所述生活区6呈L型布置，与钻井架1所在区域呈对角线布置用于提高居住环境的舒适度和安全性。
本发明采用一种钻井架布置在某一立柱上方的设计方法，利用立柱和浮筒结构保护钻井立管防止浮冰撞击的方法，使得半潜式钻井平台具备在有冰海域进行钻井作业的浮能力。
钻井架可以布置在左舷艏部或者右舷艏部、左舷尾部、右舷尾部、或者船舯左舷或右舷的立柱上方，钻井立管通过钻井架下方的立柱和浮筒设计的月池空间，进入海水中到达海床进行钻井，避免了浮冰对立管系统的碰撞，保障了钻井作业的安全。
生活区可以与钻井架采用对角布置的方式布置在主甲板上，以增加钻井区域与生活区域的有效距离，减少了钻井区域的噪声、振动、有害气体粉尘、井喷等危险事件对生活区的不利影响，提高了人员居住休息的舒适度、健康和安全性。
上述实施例用来解释说明本发明，而不是对本发明进行限制，在本发明的精神和权利要求的保护范围内，对本发明作出的任何修改和改变，都落入本发明的保护范围。

Claims (7)

  1. 一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，其特征在于，该平台包括钻井架(1)、提供浮力的浮筒(2)、提供操作空间的甲板盒(3)、立柱(4)、横撑(5)；
    所述立柱(4)用于连接浮筒(2)和甲板盒(3)，所述甲板盒(3)上具有方形的主甲板(9)，所述钻井架(1)布置在主甲板(9)的一角；
    所述浮筒(2)位于半潜式钻井平台下方，工作状态下沉入水中，为平台提供浮力；所述立柱(4)部分沉入水中，为平台提供部分浮力；所述甲板盒(3)始终高出水面；所述横撑(5)与左右舷的立柱(4)固定连接；
    布置在立柱正上方主甲板上的钻井架(1)具有钻井立管(10)，提供钻井功能，所述钻井立管(10)通过立柱(4)及下方浮筒(2)的月池空间进入海水(11)抵达海床(12)进行钻井作业，通过立柱(4)及浮筒(2)结构对钻井立管提供保护避免浮冰碰撞，防止冰载荷的不利作用。
  2. 根据权利要求1所述的一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，其特征在于，所述钻井平台还包括钻井物料堆放供应区(8)，所述钻井物料堆放供应区(8)与立柱正上方主甲板上布置的钻井架(1)相邻。
  3. 根据权利要求2所述的一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，其特征在于，所述钻井物料堆放供应区(8)上布置有泥浆区、散料区、钻杆和立管区等，同时布置有猫道和折臂吊等，为钻井作业提供支持。
  4. 根据权利要求1所述的一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，其特征在于，所述钻井平台还包括生活区(6)；所述生活区(6)呈L型布置于与钻井架(1)的对角方位的立柱(4)上方，用于提高居住环境的舒适度和安全性，为平台上作业人员提供居住休息使用。
  5. 根据权利要求1所述的一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，其特征在于，所述甲板盒(3)提供钻井平台作业时的其他功能模块的布置空间及人员居住活动操作空间。
  6. 根据权利要求1所述的一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，其特征在于，所述横撑(5)工作状态下沉入水中，拖航状态浮出水面。
  7. 根据权利要求1所述的一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台，其特征在于，所述主甲板上(9)上还具有甲板吊机(7)，用于甲板上物资的吊运及供应船只物资吊运服务。
PCT/CN2021/091070 2021-04-29 2021-04-29 一种钻井架布置在立柱正上方主甲板上的半潜式钻井平台 WO2022226908A1 (zh)

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CN101219705A (zh) * 2008-01-14 2008-07-16 中国海洋石油总公司 一种半潜式钻井平台
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CN105151241A (zh) * 2015-07-30 2015-12-16 中国海洋石油总公司 一种筒形浮箱多立柱半潜式平台
KR20160087490A (ko) * 2015-01-13 2016-07-22 현대중공업 주식회사 반잠수식 해상 구조물
CN106976530A (zh) * 2016-01-18 2017-07-25 中国国际海运集装箱(集团)股份有限公司 半潜式平台
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