JP2016117363A - Fairing cover - Google Patents

Fairing cover Download PDF

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Publication number
JP2016117363A
JP2016117363A JP2014257466A JP2014257466A JP2016117363A JP 2016117363 A JP2016117363 A JP 2016117363A JP 2014257466 A JP2014257466 A JP 2014257466A JP 2014257466 A JP2014257466 A JP 2014257466A JP 2016117363 A JP2016117363 A JP 2016117363A
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Prior art keywords
riser
fairing
cover
cover member
guide
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浩太朗 高野
Kotaro Takano
浩太朗 高野
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Mitsui Engineering and Shipbuilding Co Ltd
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Mitsui Engineering and Shipbuilding Co Ltd
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Priority to JP2014257466A priority Critical patent/JP2016117363A/en
Priority to SG11201704996WA priority patent/SG11201704996WA/en
Priority to KR1020177016859A priority patent/KR20170102869A/en
Priority to CN201580067503.3A priority patent/CN107207074A/en
Priority to PCT/JP2015/082496 priority patent/WO2016098520A1/en
Publication of JP2016117363A publication Critical patent/JP2016117363A/en
Pending legal-status Critical Current

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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 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • 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
    • 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
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Details Of Aerials (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce the additive's resistance of a protrusive construction which is arranged under a draft of floating equipment exhibiting a hull shape, and anchors a riser, a mooring rope or the like.SOLUTION: A riser guide 15 having a large number of guide pipes 16 is arranged under a draft of floating equipment which exhibits a hull shape along a bilge of a side shell. Fore-and-aft cover members 20C as fairings are fixed to fore-and-aft ends of the riser guide 15. Upper cover members 20U and lower cover members 20D are attached so as to cover the guide pipes 16 which vertically extend from a main body of the riser guide 15. After transferring floating-type production/storage/delivery equipment up to an installation sea area, the upper cover members 20U and the lower cover members 20D are removed by underwater work, and riser pipes are attached to the guide pipes 16, respectively.SELECTED DRAWING: Figure 6

Description

本発明は、船体形状を呈する浮体設備の喫水下に設けられるライザーや係留索などを船体に引きとめるための突出構造物に関する。   The present invention relates to a projecting structure for securing a riser, a mooring line, and the like provided under the draft of a floating facility having a hull shape to the hull.

浮体式生産貯蔵積出設備（ＦＰＳＯ設備）や緊張係留式プラットフォーム（ＴＬＰ）では、海底と海上施設間を繋ぐライザー管が多数設けられ、ライザー管内を通して原油、ガス、海水などの流体が輸送される。ライザー管は可撓性を有し、キール近くの外板に設けられるガイドを通して引き込まれ、水平方向に固定される（特許文献１参照）。   In floating production storage and loading equipment (FPSO equipment) and tension mooring platform (TLP), there are many riser pipes that connect between the sea floor and offshore facilities, and fluids such as crude oil, gas, and seawater are transported through the riser pipes. . The riser tube has flexibility and is pulled in through a guide provided on an outer plate near the keel and fixed in the horizontal direction (see Patent Document 1).

特表２００６−５１９１３７号公報JP-T-2006-519137

ＦＰＳＯ設備は、建造後、施設設置場所（例えば海底油井）まで洋上を移送される。しかしライザー管のガイドは、ビルジ近くで船体外板から突出する構造体であるため船体抵抗を増大させる。これにより、推進機関の大型化、移動に掛かる期間の長期化、あるいは移送コストの増大などの問題が発生する。なお、ＦＰＳＯ設備を係留するための係留索を引き込むために喫水下に設けられるチェーンフェアリーダーについても同様の問題が発生する。   After construction, the FPSO facility is transferred offshore to a facility installation location (for example, a subsea well). However, the guide of the riser pipe increases the hull resistance because it is a structure protruding from the hull outer plate near the bilge. As a result, problems such as an increase in the size of the propulsion engine, an increase in the period required for movement, and an increase in transfer costs occur. The same problem also occurs with the chain fair leader provided under the draft to draw in the mooring lines for mooring the FPSO facility.

本発明は、船体形状を呈する浮体設備の喫水下に設けられ、ライザーや係留索などを船体に引きとめるために設けられる突出構造物の付加物抵抗を低減することを課題としている。   An object of the present invention is to reduce the additional resistance of a protruding structure that is provided under a draft of a floating body facility that has a hull shape and is provided to hold a riser, a mooring line, or the like on the hull.

本発明のフェアリングカバーは、船体形状を呈する浮体設備の喫水下に、ライザーまたは係留索を船体に引きとめるために設けられる突出構造物を覆い、この突出構造物による推進方向の流体抵抗を低減することを特徴としている。   The fairing cover of the present invention covers a protruding structure provided to hold the riser or mooring line to the hull under the draft of the floating body equipment having a hull shape, and reduces the fluid resistance in the propulsion direction by the protruding structure. It is characterized by doing.

上記フェアリングカバーは、突出構造物から取り外し可能なカバー部材を備えることが好ましい。取り外し可能なカバー部材は浮力体を備えることが好ましい。また突出構造物の前方部と後方部とを覆うカバー部材が突出構造物に恒久的に取り付けられ、前方部と後方部を覆うカバー部材を除く、突出構造物の中央部を覆うカバー部材が取り外し可能なカバー部材から構成されることが好ましい。また、取り外し可能なカバー部材は、例えば膜構造、またはパネル構造で構成される。   The fairing cover preferably includes a cover member that is removable from the protruding structure. The removable cover member preferably comprises a buoyancy body. Also, a cover member that covers the front part and the rear part of the projecting structure is permanently attached to the projecting structure, and the cover member that covers the center part of the projecting structure is removed except for the cover member that covers the front part and the rear part. It is preferable that the cover member be made possible. In addition, the removable cover member has a film structure or a panel structure, for example.

カバー部材の全てが、突出構造物に一体的に構成され、フェアリングカバーの頂面と底面は、各ガイド管に対応させてライザー管が貫通する開口を備える構成とすることもできる。   All of the cover members may be configured integrally with the projecting structure, and the top surface and the bottom surface of the fairing cover may be configured to have openings through which the riser tubes pass corresponding to the respective guide tubes.

また本発明の浮体設備は、上記何れかのフェアリングカバーを備えることを特徴としている。   The floating facility of the present invention is characterized by including any of the above fairing covers.

本発明によれば、船体形状を呈する浮体設備の喫水下にライザーや係留索などを船体に引きとめるために設けられる突出構造物の付加物抵抗を低減することができる。   ADVANTAGE OF THE INVENTION According to this invention, the additional resistance of the protrusion structure provided in order to hold a riser, a mooring line, etc. on the hull under the draft of the floating body equipment which exhibits a hull shape can be reduced.

第１実施形態である浮体式生産貯蔵積出設備（ＦＰＳＯ設備）の側面図である。It is a side view of the floating body type production storage loading and unloading equipment (FPSO equipment) which is a 1st embodiment. ライザーガイドを（ａ）船尾方向、（ｂ）側面方向、（ｃ）上方から見たときの部分拡大図である。It is the elements on larger scale when a riser guide is seen from (a) stern direction, (b) side surface direction, and (c) upper direction. ライザーガイドの外観を示す斜視図である。It is a perspective view which shows the external appearance of a riser guide. フェアリングカバーがライザーガイドに取り付けられた状態の外観を示す斜視図である。また、図６には、フェアリングカバーを分解した状態が示される。It is a perspective view which shows the external appearance of the state in which the fairing cover was attached to the riser guide. Moreover, the state which decomposed | disassembled the fairing cover is shown by FIG. フェアリングカバー内のライザーガイド及びガイド管が透視された状態で描かれる斜視図である。It is a perspective view drawn in the state where the riser guide and guide tube in a fairing cover were seen through. フェアリングカバーを分解された状態が示される斜視図である。It is a perspective view by which the state by which the fairing cover was decomposed | disassembled is shown. 第２実施形態のフェアリングカバーの構成を示す斜視図である。It is a perspective view which shows the structure of the fairing cover of 2nd Embodiment.

以下、本発明の実施形態について添付図面を参照して説明する。
図１は、本発明に係る浮体設備の第１実施形態である浮体式生産貯蔵積出設備（ＦＰＳＯ設備）の側面図である。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a side view of a floating-type production storage / loading facility (FPSO facility) which is a first embodiment of a floating facility according to the present invention.

第１実施形態のＦＰＳＯ設備１０は、船舶形状を呈し、例えば原油、ガスなどの炭化水素を処理する処理設備１１を備える。ＦＰＳＯ設備１０は、建造後、自走または曳航されて設置海域（水域）まで移送され、同海域（水域）に係留される。   The FPSO facility 10 according to the first embodiment has a ship shape and includes a processing facility 11 that processes hydrocarbons such as crude oil and gas. After construction, the FPSO facility 10 is self-propelled or towed, transferred to the installation sea area (water area), and moored in the sea area (water area).

設置海域に係留されたＦＰＳＯ設備１０には、可撓性を有する多数のライザー管１２（図１では２本のみを図示）が取り付けられ、原油やガスなどの炭化水素が、海底から処理設備１１に汲み上げられて処理される。処理設備１１において処理された炭化水素は、例えば船体内に設けられたタンク（図示せず）に貯蔵される。   A large number of flexible riser tubes 12 (only two are shown in FIG. 1) are attached to the FPSO facility 10 moored in the installation sea area, and hydrocarbons such as crude oil and gas are treated from the sea floor to the treatment facility 11. It is pumped up and processed. The hydrocarbons processed in the processing facility 11 are stored, for example, in a tank (not shown) provided in the hull.

ライザー管１２は、処理設備１１から船側外板１３に沿って海底へと導かれる。船側には、各ライザー管１２の位置を固定するための例えば一対のライザーガイド１４、１５が設けられる。ライザーガイド１４は、船側外板１３上方において船体長手方向に沿って配置され、各ライザー管１２の処理設備１１に近い部分を船体に固定する。一方、ライザーガイド１５は、喫水Ｌ下のビルジ近くにおいてビルジに沿って配置され、海中へと垂下するライザー管１２を船体に固定する。   The riser pipe 12 is led from the processing equipment 11 along the ship side skin 13 to the seabed. For example, a pair of riser guides 14 and 15 for fixing the position of each riser pipe 12 is provided on the ship side. The riser guide 14 is disposed along the hull longitudinal direction above the ship side outer plate 13 and fixes a portion of each riser pipe 12 close to the processing equipment 11 to the hull. On the other hand, the riser guide 15 is disposed along the bilge near the bilge below the draft L, and fixes the riser pipe 12 hanging down into the sea to the hull.

図２、図３を参照して本実施形態において喫水Ｌ下に設けられるライザーガイド１５の構成について説明する。なお、上部のライザーガイド１４には、フェアリングカバーは取り付けない。   With reference to FIG. 2 and FIG. 3, the structure of the riser guide 15 provided under the draft L in this embodiment is demonstrated. Note that a fairing cover is not attached to the upper riser guide 14.

図２（ａ）は、ライザーガイド１５を例えば図１の船尾方向から船体長手方向に沿ってみた図であり、図２（ｂ）は、図１のライザーガイド１５の船尾側端部を拡大した側面図である。また図２（ｃ）は、図２（ｂ）を上から見た平面図である。図３は、図２（ｂ）、（ｃ）を船尾側斜め上方から見た斜視図である。   2A is a view of the riser guide 15 as viewed from the stern direction of FIG. 1 along the longitudinal direction of the hull, for example. FIG. 2B is an enlarged view of the stern side end of the riser guide 15 of FIG. It is a side view. FIG. 2C is a plan view of FIG. 2B viewed from above. FIG. 3 is a perspective view of FIGS. 2B and 2C as viewed obliquely from above the stern side.

ライザーガイド１５の本体は船体長手方向に長尺の箱型を呈する構造物であり、ビルジ近傍の船側外板１３から外側に突出する。第１実施形態のライザーガイド１５には、各々のライザー管１２を垂直方向に沿ってガイドするためのガイド管１６が長手方向に沿って例えば所定間隔で配置される。ガイド管１６は、ライザーガイド１５の本体を上下方向に貫通する管で、例えばその上端は上方からライザー管１２を挿入し易くするため、また、下端は浮体係留時のドリフトを考慮してラッパ状に拡径されている。   The main body of the riser guide 15 is a structure that has a long box shape in the longitudinal direction of the hull, and protrudes outward from the ship side skin 13 near the bilge. In the riser guide 15 of the first embodiment, guide tubes 16 for guiding each riser tube 12 along the vertical direction are arranged along the longitudinal direction at a predetermined interval, for example. The guide pipe 16 is a pipe that penetrates the main body of the riser guide 15 in the vertical direction. The diameter has been expanded.

次に図４〜図６を参照してライザーガイド１５の流体抵抗を低減するための第１実施形態のフェアリングカバーについて説明する。   Next, the fairing cover of the first embodiment for reducing the fluid resistance of the riser guide 15 will be described with reference to FIGS.

図４〜図６は、第１実施形態のフェアリングカバー２０の構成を示す斜視図であり、それぞれ略図３に対応する部分が描かれる。図４は、フェアリングカバー２０がライザーガイド１５に取り付けられた状態の外観が示され、図５には、フェアリングカバー２０内のライザーガイド１５が透視された状態で描かれる。また、図６には、フェアリングカバー２０を分解した状態が示される。   4 to 6 are perspective views showing the configuration of the fairing cover 20 according to the first embodiment, and portions corresponding to those in FIG. 3 are drawn. FIG. 4 shows the appearance of the state in which the fairing cover 20 is attached to the riser guide 15, and FIG. 5 is a view in which the riser guide 15 in the fairing cover 20 is seen through. Moreover, the state which decomposed | disassembled the fairing cover 20 is shown by FIG.

図４〜図６に示されるように、ライザーガイド１５の前後部（船首側、船尾側）は、ライザーガイド１５の形状が箱型であることから前後部に段差が生じ抵抗増加の要因となっているので、抵抗増加を緩和するための斜め部材を備えた前後カバー部材２０Ｃが船体およびライザーガイド１５に一体的に設けられる。ライザーガイド１５の上方および下方は、ライザーガイド１５の本体から上下に突出するガイド管１６をそれぞれ覆う上部カバー部材２０Ｕおよび下部カバー部材２０Ｄがそれぞれ取り付けられる。   As shown in FIGS. 4 to 6, the front and rear portions (the bow side and the stern side) of the riser guide 15 are step-shaped in the front and rear portions because the shape of the riser guide 15 is a box shape, which causes an increase in resistance. Therefore, the front / rear cover member 20 </ b> C having an oblique member for alleviating the increase in resistance is provided integrally with the hull and the riser guide 15. An upper cover member 20U and a lower cover member 20D are attached to the upper and lower portions of the riser guide 15 so as to cover the guide tubes 16 projecting upward and downward from the main body of the riser guide 15, respectively.

上部カバー部材２０Ｕおよび下部カバー部材２０Ｄは、ＦＰＳＯ設備１０を移送して設置した後、取り外されるカバー部材であり、例えばそれぞれＬ字断面を有するパネル部材である。すなわちＦＰＳＯ設備１０設置後は、図６のように上部カバー部材２０Ｕ、下部カバー部材２０Ｄは取り外される。なお、ライザーガイド１５に取り付けられた状態にある上部カバー部材２０Ｕと下部カバー部材２０Ｄの間は、ライザーガイド１５本体の側面１５Ｓが連絡して船側外板１３に平行な１つの平面を構成する。またこのとき、上部カバー部材２０Ｕの頂面は、ガイド管１６の上部開口部を覆い、前後カバー部材２０Ｃの頂面と同じ高さの平面を形成し、下部カバー部材２０Ｄの底面は、ガイド管１６の下部開口部を覆い、前後カバー部材２０Ｃの底面と同じ高さの平面を形成する。   The upper cover member 20U and the lower cover member 20D are cover members that are removed after the FPSO facility 10 is transferred and installed, and are, for example, panel members each having an L-shaped cross section. That is, after the FPSO facility 10 is installed, the upper cover member 20U and the lower cover member 20D are removed as shown in FIG. In addition, between the upper cover member 20U and the lower cover member 20D that are attached to the riser guide 15, the side surface 15S of the riser guide 15 main body communicates to form one plane parallel to the ship-side outer plate 13. At this time, the top surface of the upper cover member 20U covers the upper opening of the guide tube 16, forms a flat surface that is the same height as the top surface of the front and rear cover member 20C, and the bottom surface of the lower cover member 20D The lower opening 16 is covered and a flat surface having the same height as the bottom surface of the front and rear cover member 20C is formed.

図６に示される例では、上部カバー部材２０Ｕ、下部カバー部材２０Ｄは、各々のガイド管１６に対応して同数設けられる。また、ガイド管１６同士の間には、その略中央に、フェアリングカバー２０の横断面形状に対応する板状のフレーム板２１が船側外板に垂直に設けられ、上部カバー部材２０Ｕと下部カバー部材２０Ｄは、フレーム板２１に所定の取付方法を用いて固定可能である。また箱型のライザーガイド１５頂部において、船側外板１３に沿った縁には、外板に沿って上部カバー部材２０Ｕを取り付けるための取付部材２２が設けられる。なお、下部カバー部材２０Ｄが船側外板に接する部分にも同様の取付部材２２が設けられる（図示せず）。   In the example shown in FIG. 6, the upper cover member 20 </ b> U and the lower cover member 20 </ b> D are provided in the same number corresponding to each guide tube 16. A plate-like frame plate 21 corresponding to the cross-sectional shape of the fairing cover 20 is provided between the guide tubes 16 perpendicular to the ship side outer plate at the approximate center, and the upper cover member 20U and the lower cover are provided. The member 20D can be fixed to the frame plate 21 using a predetermined attachment method. Further, at the top of the box-type riser guide 15, an attachment member 22 for attaching the upper cover member 20 </ b> U along the outer plate is provided at an edge along the ship-side outer plate 13. A similar attachment member 22 is also provided at a portion where the lower cover member 20D is in contact with the ship side outer plate (not shown).

上部カバー部材２０Ｕ、下部カバー部材２０Ｄは、例えばボルト、索や番線による固縛、あるいは局所的な溶接によりライザーガイド１５や船側外板１３に取り付けられ、ＦＰＳＯ設備１０を設置後は、水中作業者により取り外される。本実施形態において上部カバー部材２０Ｕ、下部カバー部材２０Ｄを構成するパネルは例えばスチール板等で構成されるため、その自重から水中における取り外し作業は困難となる。そこで本実施形態では、図６の破線で示されるように、各上部カバー部材２０Ｕ、下部カバー部材２０Ｄに浮力体（ボイド）２３を設け、これにより上部カバー部材２０Ｕ、下部カバー部材２０Ｄが水中において、例えば中性浮力を有するように構成される。   The upper cover member 20U and the lower cover member 20D are attached to the riser guide 15 or the ship side skin 13 by, for example, lashing with bolts, ropes or wire wires, or local welding. After installing the FPSO facility 10, an underwater worker Removed. In this embodiment, since the panel which comprises the upper cover member 20U and the lower cover member 20D is comprised, for example with a steel board etc., the removal operation | work in water from its own weight becomes difficult. Therefore, in the present embodiment, as shown by the broken lines in FIG. 6, buoyancy bodies (voids) 23 are provided in the upper cover member 20U and the lower cover member 20D, so that the upper cover member 20U and the lower cover member 20D are underwater. For example, it is configured to have neutral buoyancy.

浮力体２３は、上部カバー部材２０Ｕ、下部カバー部材２０Ｄがライザーガイド１５に装着されたときのフェアリングカバー２０内の空所に対応する位置に設けられる。すなわち、図６のように、隣り合うガイド管１６の間の空間に配置される。   The buoyancy body 23 is provided at a position corresponding to a void in the fairing cover 20 when the upper cover member 20U and the lower cover member 20D are attached to the riser guide 15. That is, it arrange | positions in the space between the adjacent guide pipe | tubes 16 like FIG.

なお、上記本実施形態の説明においては、上部カバー部材２０Ｕ、下部カバー部材２０Ｄは、スチール製のパネル部材として説明を行ったが、両部材、あるいはその一方をパネル部材ではなく、スチール板などのパネル部材よりも水中重量が軽く、作業性の良いキャンバス（膜部材）で構成してもよく、その場合には、キャンバス生地が取付部材２２に取り付けられ、フェアリングカバーとしてのその形状はフレーム板２１によって保持される。   In the description of the present embodiment, the upper cover member 20U and the lower cover member 20D are described as steel panel members. However, both members or one of them is not a panel member but a steel plate or the like. The underwater weight is lighter than that of the panel member, and the canvas (membrane member) may have a good workability. In this case, the canvas fabric is attached to the attachment member 22 and the shape as a fairing cover is a frame plate. 21 is held.

以上のように本実施形態によれば、ＦＰＳＯ設備を移送するときには、フェアリングカバーによりライザーガイド及びガイド管が覆われるので、その流体抵抗が低下され、移送効率が改善される。また、移送後、ＦＰＳＯ設備１０の設置後は、水中作業者により、簡単にフェアリングカバーを取り外すことができる。また前後カバー部材を固定式としたことで、設置後に取り外すべきカバー部材の数が低減され、作業時間が短縮される。   As described above, according to the present embodiment, when the FPSO equipment is transferred, the riser guide and the guide tube are covered by the fairing cover, so that the fluid resistance is lowered and the transfer efficiency is improved. Further, after the transfer and after the installation of the FPSO facility 10, the fairing cover can be easily removed by an underwater worker. Further, since the front and rear cover members are fixed, the number of cover members to be removed after installation is reduced, and the working time is shortened.

次に第２実施形態のフェアリングカバー２５の構成について図７を参照して説明する。図７は、第１実施形態の図４に対応する斜視図である。   Next, the structure of the fairing cover 25 of 2nd Embodiment is demonstrated with reference to FIG. FIG. 7 is a perspective view corresponding to FIG. 4 of the first embodiment.

第２実施形態では、フェアリングカバー２５とライザーガイド１５（突出構造物）とを一体的に構成する。第２実施形態のフェアリングカバー２５の外観は、図４の外観と略同じであるが、その頂面２５Ｔと底面２５Ｂには、各ガイド管１６に対応させてライザー管が貫通する開口１６Ａ、１６Ｂが設けられる。移送時には、例えば、これらの各開口１６Ａ、１６Ｂに蓋状のカバー部材が嵌められ、ＦＰＳＯ設備１０の設置後は、これらの蓋状のカバー部材のみが取り外されるが、少しの抵抗増を許容することにより、蓋状のカバー部材はなくすことも可能である。   In the second embodiment, the fairing cover 25 and the riser guide 15 (projecting structure) are integrally configured. The external appearance of the fairing cover 25 of the second embodiment is substantially the same as the external appearance of FIG. 4, but the top surface 25T and the bottom surface 25B have openings 16A through which the riser pipes penetrate in correspondence with the guide pipes 16, respectively. 16B is provided. At the time of transfer, for example, a lid-like cover member is fitted in each of the openings 16A and 16B. After the FPSO facility 10 is installed, only these lid-like cover members are removed, but a slight increase in resistance is allowed. Thus, it is possible to eliminate the lid-like cover member.

以上のように、第２実施形態の構成においても第１実施形態と同様の効果が得られる。また第２実施形態では、例えば、蓋状のカバー部材のみを取り外せばよいので、水中作業者の作業量が更に低減される。   As described above, the same effects as those of the first embodiment can be obtained in the configuration of the second embodiment. In the second embodiment, for example, only the lid-like cover member needs to be removed, so that the work amount of the underwater worker is further reduced.

なお、本実施形態では浮体式生産貯蔵積出（ＦＰＳＯ）設備のライザーガイドを例に説明を行なったが、本発明は、チェーンフェアリーダーなど、係留索を船体に引きとめるための突出構造物にも適用でき、浮体式貯蔵積出（ＦＳＯ）設備など、ＦＰＳＯ以外の船体形状を呈する浮体設備にも適用できる。   In this embodiment, the riser guide of the floating production storage and loading (FPSO) facility has been described as an example. However, the present invention provides a projecting structure for anchoring the mooring line to the hull, such as a chain fair leader. Can also be applied, and can also be applied to floating body equipment that exhibits a hull shape other than FPSO, such as floating body storage and shipping (FSO) equipment.

１０ 浮体式生産貯蔵積出設備（ＦＰＳＯ設備）
１１ 処理設備
１２ ライザー管
１３ 船側外板
１５ ライザーガイド（喫水Ｌ下）
１５Ｓ ライザーガイド側壁
１６ ガイド管
１６Ａ、１６Ｂ 開口
２０、２５ フェアリングカバー
２０Ｃ 前後カバー部材
２０Ｄ 下部カバー部材
２０Ｕ 上部カバー部材
２１ フレーム板
２２ 取付部材
２３ 浮力体（ボイド）
Ｌ 喫水 10 Floating production storage and shipping equipment (FPSO equipment)
11 Processing equipment 12 Riser pipe 13 Ship side skin 15 Riser guide (under draft L)
15S riser guide side wall 16 guide tube 16A, 16B opening 20, 25 fairing cover 20C front / rear cover member 20D lower cover member 20U upper cover member 21 frame plate 22 mounting member 23 buoyancy body (void)
L draft

Claims (7)

船体形状を呈する浮体設備の喫水下に、ライザーまたは係留索を船体に引きとめるために設けられる突出構造物を覆い、前記突出構造物による推進方向の流体抵抗を低減することを特徴とするフェアリングカバー。   A fairing characterized by covering a projecting structure provided to hold a riser or mooring line to the hull under the draft of a floating body facility having a hull shape, and reducing fluid resistance in the propulsion direction by the projecting structure cover. 前記突出構造物から取り外し可能なカバー部材を備えることを特徴とする請求項１に記載のフェアリングカバー。   The fairing cover according to claim 1, further comprising a cover member that is removable from the protruding structure. 前記取り外し可能なカバー部材が浮力体を備えることを特徴とする請求項２に記載のフェアリングカバー。   The fairing cover according to claim 2, wherein the removable cover member includes a buoyancy body. 前記突出構造物の前方部と後方部とを覆うカバー部材が前記突出構造物に恒久的に取り付けられ、前記前方部と後方部を覆うカバー部材を除く、前記突出構造物の中央部を覆うカバー部材が前記取り外し可能なカバー部材から構成されることを特徴とする請求項２または請求項３の何れか一項に記載のフェアリングカバー。   A cover that covers a central portion of the projecting structure except for a cover member that is permanently attached to the projecting structure and covers the front and rear portions of the projecting structure. The fairing cover according to any one of claims 2 and 3, wherein a member is constituted by the removable cover member. 前記取り外し可能なカバー部材が膜構造、またはパネル構造で構成されることを特徴とする請求項２〜４の何れか一項に記載のフェアリングカバー。   The fairing cover according to any one of claims 2 to 4, wherein the removable cover member has a film structure or a panel structure. カバー部材の全てが、前記突出構造物に一体的に構成され、前記フェアリングカバーの頂面と底面は、各ガイド管に対応させてライザー管が貫通する開口を備えることを特徴とする請求項１に記載のフェアリングカバー。   All of the cover members are integrally formed on the projecting structure, and the top surface and the bottom surface of the fairing cover are provided with openings through which the riser tubes pass corresponding to the respective guide tubes. The fairing cover according to 1. 請求項１〜請求項６に記載のフェアリングカバーを備えることを特徴とする浮体設備。   A floating facility comprising the fairing cover according to claim 1.
JP2014257466A 2014-12-19 2014-12-19 Fairing cover Pending JP2016117363A (en)

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SG11201704996WA SG11201704996WA (en) 2014-12-19 2015-11-19 Fairing cover
KR1020177016859A KR20170102869A (en) 2014-12-19 2015-11-19 Fairing cover
CN201580067503.3A CN107207074A (en) 2014-12-19 2015-11-19 Radome fairing
PCT/JP2015/082496 WO2016098520A1 (en) 2014-12-19 2015-11-19 Fairing cover

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