JPS6130484A - Buoyant structure for iced sea - Google Patents
Buoyant structure for iced seaInfo
- Publication number
- JPS6130484A JPS6130484A JP15210684A JP15210684A JPS6130484A JP S6130484 A JPS6130484 A JP S6130484A JP 15210684 A JP15210684 A JP 15210684A JP 15210684 A JP15210684 A JP 15210684A JP S6130484 A JPS6130484 A JP S6130484A
- Authority
- JP
- Japan
- Prior art keywords
- floating body
- buoyant body
- mooring
- floating
- sea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/507—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2211/00—Applications
- B63B2211/06—Operation in ice-infested waters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、氷海域に浮遊させて例えば海底油田を掘削す
るための、あるいは産出した石油を貯蔵するための浮体
あるいは浮遊構造物に関する。更に詳しくは、氷海域に
簡単に係留したり、その係留を簡単に解除するのに適し
た浮体あるいは浮遊構造物の係留装置を提供するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a floating body or floating structure that is floated in an icy area for, for example, drilling an offshore oil field or storing produced oil. More specifically, the present invention provides a mooring device for a floating body or floating structure that is suitable for easily mooring or unmooring in an icy area.
〔従来技術〕 。[Prior art].
近時、氷海域において海底油田の石油の掘削が盛んに行
われている。また、この生産された石油を氷海域におい
て貯蔵する必要がある。Recently, drilling for oil in offshore oil fields has been actively carried out in frozen areas. In addition, it is necessary to store this produced oil in icy waters.
掘削あるいは貯蔵の方法としては、多数のワイヤーで係
留したタンカー状の浮体（浮遊構造物あるいはパージ）
によって行うのが一般的である。この浮体は、流氷の力
を受けることが非常に多く、従って流氷を破壊する能力
と、その流氷の力に対して充分に耐えることが必要であ
る。The method of excavation or storage is a tanker-like floating structure (floating structure or purge) moored with many wires.
This is generally done by This floating body is very often subjected to the force of ice floes, and therefore needs to have the ability to destroy the ice floes and to be able to withstand the force of the ice floes sufficiently.
更に、流氷は潮流や風向きによって刻々と移動するので
、その流氷の移動に伴って浮体の向きを変えて、この浮
体に作用する流氷の力が最小となるように配慮する必要
がある。Furthermore, since the drift ice moves constantly depending on the current and wind direction, it is necessary to change the direction of the floating body as the drift ice moves, so that the force of the drift ice acting on the floating body can be minimized.
そこで、第５図及び第６図に示すようにタンカー形状の
浮体ｌ （浮遊構造物）を氷海域Ｗに浮遊させ、その中
央部にウェル２を開口し、このウェル２の内部に円筒状
あるいは円柱状の旋同体３を浮体１に対して旋回自在に
収容し、この旋回体３の上部に多数のウィンチ４を設け
、“海底Ｇに固定されたＩＩ５を先端に有する多数本の
係留索６を放射状に張ちて浮体１が何れの方向にも向く
ことができるように係留している。Therefore, as shown in Figs. 5 and 6, a tanker-shaped floating body (floating structure) is floated in the frozen area W, a well 2 is opened in the center of the tanker-shaped floating structure, and a cylindrical or A cylindrical rotating body 3 is accommodated in a freely rotating manner relative to the floating body 1, and a large number of winches 4 are provided on the upper part of the rotating body 3. The floating bodies 1 are moored so that they can be oriented in any direction by being stretched radially.
そして前記係留索６には、その途中に切離装置７が設け
られており、浮体１自体では破壊することができないよ
うな大氷盤８が近づいた時等の緊急時には、この切離装
置７を超音波等の信号によって作動させて係留索６を錨
５より切離し、浮体１を現場より離脱させるように構成
されている。The mooring line 6 is provided with a disconnection device 7 in the middle, and in an emergency such as when a large ice floe 8 that cannot be destroyed by the floating body 1 itself approaches, this disconnection device 7 is installed. is activated by a signal such as an ultrasonic wave to separate the mooring rope 6 from the anchor 5 and remove the floating body 1 from the site.
しかし、前記係留索６の長さは、通常１〜２Ｋｍと極め
て長く、しかもその複数の係留索６を浮体２の周囲に放
射状に海底Ｇに張ること自体が大変に繁雑な作業である
と共に、前記のように１〜２Ｋｍにも至る長い係留索６
の先端にある切離装置７を正確に作動させることは困難
な場合が多く、危険性が伴うこともあった。However, the length of the mooring ropes 6 is usually extremely long, 1 to 2 km, and it is a very complicated work to string the plurality of mooring ropes 6 radially around the floating body 2 on the seabed G. As mentioned above, the long mooring rope 6 reaches 1 to 2 km.
It is often difficult to operate the cutting device 7 at the tip of the cutting device 7 accurately, and sometimes it is dangerous.
本発明は、前記従来の水海ｊ７ＡＷにおける浮体１ （
浮遊構造物）を簡単に係留し、そして必要に応じて簡単
にその係留を解除することができる水海用浮遊構造物を
提供することを目的とするものである。The present invention provides the floating body 1 (
The object of the present invention is to provide a floating structure for use in water and sea that can be easily moored (floating structure) and easily unmoored as necessary.
前記目的を達成するための本発明は、浮体を複数本の係
留索によって係留した水海用浮遊構造物において、海底
に設置され、この海底面より充分に高い位置に前記係留
索との接合部分が設けられている海中基礎と前記浮体と
の間が係留索によって接合されており、しかもこの係留
索には前記浮体からの信号によって離脱可能な切離装置
装置が設けられていることを特徴とする水海用浮遊構造
物である。To achieve the above object, the present invention is a floating structure for water and sea in which a floating body is moored by a plurality of mooring lines, which is installed on the seabed, and has a connecting portion with the mooring lines at a position sufficiently higher than the seabed surface. A mooring line connects the underwater foundation on which the floating body is provided, and the mooring line is provided with a disconnection device that can be detached by a signal from the floating body. It is a floating structure for use in water and sea.
（実施例〕 次に、図面を参照して本発明の詳細な説明する。(Example〕 Next, the present invention will be described in detail with reference to the drawings.
第１図は、本発明の実施例を示す側断面図、第２図は同
斜視図であって、海底Ｇに海中基礎ＩＯが設けられ、こ
の海中基礎１０の延長部１１の先端に設けられた切離装
置７を介して係留索６によって浮体１ （浮遊構造物）
が係留されている。FIG. 1 is a side sectional view showing an embodiment of the present invention, and FIG. 2 is a perspective view of the same, in which an underwater foundation IO is provided on the seabed G, and an underwater foundation IO is provided at the tip of an extension 11 of this underwater foundation 10. Floating body 1 (floating structure) by mooring line 6 via disconnection device 7
is moored.
海中基礎１０は、例えば第２図のような構造を有し、鉄
板製もしくはコンクリート製あるいはこれらの複合体で
あって、かつ円板状の基盤１２上に円筒状の延長部１１
が設けられ、更にその基盤１２の中心部には穴１３が設
けられ、この穴１３を通して浮体１上の掘削設備１４に
連続している管１５が海底油田まで延長されている。前
記海中基礎１０はバラストによって重量の増減が可能な
ように構成されている。The underwater foundation 10 has a structure as shown in FIG. 2, for example, and is made of iron plates, concrete, or a composite thereof, and has a cylindrical extension part 11 on a disc-shaped base 12.
Further, a hole 13 is provided in the center of the base 12, and a pipe 15 connected to the drilling equipment 14 on the floating body 1 is extended through the hole 13 to the offshore oil field. The underwater foundation 10 is configured so that its weight can be increased or decreased by using ballast.
また、延長部１１は、係留索６を接続する位置を海底Ｇ
より上方に位置させることによって海面と延長部１１と
の間の距離（Ｌ）を可能な限りに短縮したものである。The extension portion 11 also connects the mooring cable 6 to the seabed G.
By locating it higher up, the distance (L) between the sea level and the extension part 11 is shortened as much as possible.
前記のように海面下の距Ｈ（Ｌ）の位置に切離装置７の
係留端を上昇させることによって旋回体３より下方に放
射状に延長された係留索６の下端の距離りが縮小される
ことになる。As mentioned above, by raising the mooring end of the disconnection device 7 to the position of the distance H (L) below the sea surface, the distance of the lower end of the mooring line 6 that extends radially downward from the revolving structure 3 is reduced. It turns out.
切離装置７は、浮体１の船底に設けられた発信機１６よ
りの信号１７ （例えば超音波信号）を受ける位置に設
けられており、この信号１７によって切離動作をするこ
とができる。The separation device 7 is provided at a position to receive a signal 17 (for example, an ultrasonic signal) from a transmitter 16 provided on the bottom of the floating body 1, and can perform a separation operation based on this signal 17.
さて、第１図に示すように、浮体１自体を割ることがで
きる程度の薄い氷盤８Ａがある場合には前記切離装置７
を接続した状態で浮体１を係留している。Now, as shown in FIG. 1, if there is an ice floe 8A that is thin enough to break the floating body 1 itself, the cutting device 7
The floating body 1 is moored in a state where it is connected.
しかし、第３図に示すように大氷盤８が矢印Ｘのように
近づいた場合には前記発信機１６よりの信号１７によっ
て切離装置７を作動させて切離装置部材７Ａと７Ｂとに
分離させ、前記切離装置部材７Ａをウィンチ４によって
旋回体３側に巻上げて前記浮体１を矢印Ｙの方向に移動
させることによって緊急に脱出することができる。However, as shown in FIG. 3, when the large ice floe 8 approaches in the direction of arrow By separating the floating body 1, hoisting the separating device member 7A toward the rotating body 3 using the winch 4, and moving the floating body 1 in the direction of arrow Y, emergency escape can be achieved.
この海中基礎１０は□それを製作した場所から簡単に曳
航あるいは運搬できるように構成したものであって、海
底Ｇ゛に設置する際には、バラスト水やコンクリートそ
の他の重量物を送入して海底Ｇに固定し、浮体１に通常
の厚さの氷板が接触しても簡単にこの浮体１が移動しな
い程度に位置決めされる。This underwater foundation 10 is constructed so that it can be easily towed or transported from the place where it was manufactured, and when it is installed on the seabed G, ballast water, concrete, and other heavy objects must be pumped in. It is fixed to the seabed G and positioned to such an extent that the floating body 1 will not easily move even if an ice sheet of normal thickness comes into contact with the floating body 1.
一方、その場所における海底油田の探索９石油の生産等
の各種の必要な作業が終了したならば、第４図に示すよ
うに海中基礎１０中のバラスト水１８や砂等を排出させ
て海底Ｇより浮゛上させ、浮体１に吊下げた状態で所定
の位置に運搬し、再び前記のようにして浮体１を氷海域
Ｗに係留する。On the other hand, once various necessary operations such as the exploration of submarine oil fields 9 and the production of oil at that location have been completed, the ballast water 18, sand, etc. in the underwater foundation 10 are discharged, and the seabed G The floating body 1 is then lifted to the surface, suspended from the floating body 1, and transported to a predetermined position, and the floating body 1 is again moored in the frozen area W as described above.
また、第３図においては海底基礎１０を切離装置７の部
分で切り離して浮体１を移動する方法を説明したが、第
４図のように海底基礎１０を浮体１に吊下げて大水盤８
が浮体ｌに衝突しない位置にまで避難することも可能で
ある。In addition, in FIG. 3, a method for moving the floating body 1 by separating the seabed foundation 10 at the separation device 7 was explained, but as shown in FIG. 4, the seabed foundation 10 is suspended from the floating body 1 and
It is also possible to evacuate to a position where the floating body l will not collide with the floating body l.
切離装置部材？Ａ、７Ｂを一旦切り離すと自動的には接
続することができないが、接続する場合には、ダイパー
やロボットを使用して行うことができる。Separation device parts? Once A and 7B are separated, they cannot be automatically connected, but if they are to be connected, they can be done using a dipper or a robot.
本発明は、以上のように、浮体１ （浮遊構造物）の係
留索６の下端の固定部分を従来のように海底Ｇの位置に
直接におくのではなく、第１図に示すように氷海域Ｗよ
り距離（Ｌ）だけ下った位置、即ち、海底Ｇより距離（
Ｍ）だけ上昇した位置においたことに特徴がある。従っ
て、本発明によれば次の如き効果を奏することができる
。As described above, the present invention does not place the fixed part of the lower end of the mooring line 6 of the floating body 1 (floating structure) directly on the seabed G as in the past, but instead places it on the seabed G as shown in FIG. A position that is a distance (L) below the ocean area W, that is, a distance (L) from the ocean floor G.
It is distinctive in that it is placed in a position that is elevated by M). Therefore, according to the present invention, the following effects can be achieved.
（１）係留索６は海底Ｇ、ＩＩ：り距離（Ｍ）だけ上昇
した位置に固定されるために、係留索６が浮体ｌより第
５図の従来例のように横方向に長く延長されることがな
い。(1) Since the mooring line 6 is fixed at a position elevated by the distance (M) on the seabed G, II, the mooring line 6 is extended laterally longer than the floating body l as in the conventional example shown in Fig. 5. Never.
従って、係留索６を海中基礎１０に固定する位置が比較
的浮体ｌに接近することになるために係留索６が横方に
延長される距離（Ｄ）が短く、切離しと係留索６の回収
が極めて容易となる。Therefore, since the position where the mooring line 6 is fixed to the underwater foundation 10 is relatively close to the floating body 1, the distance (D) over which the mooring line 6 is extended laterally is short, and the mooring line 6 can be easily separated and recovered. becomes extremely easy.
また、再び海中基礎１０に浮体１を係留する場合には、
海中基礎１０に対して係留索６の端部を切離装置７を介
して固定するわけであるが、海底Ｇより距離（Ｍ）だけ
上昇した浮体１に近い位置に切離装置部材７Ｂが接近し
ており、更にこれらの切離装置部材７Ｂの間は短縮され
た距離（＋））に位置しているために、浮体１より垂下
されている係留索６の先端に設けられた切離装置部材７
Ａを簡単に接合させることができる。In addition, when mooring the floating body 1 to the underwater foundation 10 again,
The end of the mooring line 6 is fixed to the underwater foundation 10 via the disconnection device 7, and the disconnection device member 7B approaches a position close to the floating body 1, which is elevated by a distance (M) above the seabed G. Furthermore, since the distance between these disconnection device members 7B is shortened (+), the disconnection device installed at the tip of the mooring cable 6 hanging from the floating body 1 Part 7
A can be easily joined.
（２）以上のように、係留索６と海中基礎１０との間の
切離し操作が容易であるので、緊急時に浮体１の現場か
らの脱出を容易に行うことができるので安全性が向上す
る。(2) As described above, since the disconnection operation between the mooring rope 6 and the underwater foundation 10 is easy, the floating body 1 can easily escape from the site in an emergency, thereby improving safety.
更に、再び同所に係留す北際の係留索６の接続操作も容
易となる。Furthermore, it becomes easier to connect the north end mooring cable 6 to be moored at the same location again.
このことは重要であって、第５図及び第６図のように浮
体１に対して係留索６を放射状に長く延長した場合には
、係留索６の設置と回収の作業が大作業となるが、本発
明においては短い係留索６を使用して海底Ｇより距離（
Ｍ）だけ上昇した位置で係留することができるので、そ
の作業を簡単に実施することができるのである。This is important, as when the mooring lines 6 are extended radially long relative to the floating body 1 as shown in Figures 5 and 6, the work of installing and recovering the mooring lines 6 becomes a major task. However, in the present invention, using a short mooring line 6, the distance (
Since the mooring can be done at a position raised by M), this work can be carried out easily.
（３）海中基礎１０は鉄板製あるいはコンクリート製、
または鉄板とコンクリートとの複合構造であり、それ自
体を浮体として構成しておくことによってこの海中基礎
１０内のバラストを排出して浮上させることによって簡
単に曳航して別の場所に運搬し、設置することも可能で
ある。(3) The underwater foundation 10 is made of iron plate or concrete,
Alternatively, it is a composite structure of steel plates and concrete, and by configuring itself as a floating body, the ballast inside this underwater foundation 10 is discharged and floated, so that it can be easily towed, transported to another location, and installed. It is also possible to do so.
第１図は本発明の実施例に係る水海用浮遊構造物を海中
基礎によって係留中の状態を示す断面図、第２図は第１
図の同様な状態を一部断面して示す斜視図、第３図は切
離装置を作動させて浮体を緊急に現場より脱出さ゛せて
いる状態を示す断面図、第４図は海中基礎を浮体によっ
て運搬中の状態を示す説明図である。
第５図は従来の方法によって係留された水海用浮遊構造
物の側面図、第６図は第５図の浮体の平面図である。
Ｗ・・・氷海域、Ｇ・・・海底、
１・・・浮体、浮遊構造物、６・・・係留索、７・・・
切離装置、７Ａ、７Ｂ・・・切離装置部材、１３・・・
穴、１４・・・掘削設備、１５・・・管、１６・・・発
信機、１７・・・信号、１８・・・バラスト水。FIG. 1 is a sectional view showing a state in which a floating structure for water and sea according to an embodiment of the present invention is moored by an underwater foundation, and FIG.
Figure 3 is a cross-sectional view showing a state in which the floating body is being urgently evacuated from the site by activating the separation device; Figure 4 is a perspective view showing a state similar to that shown in Figure 3, with a part of the floating body being evacuated from the site. FIG. FIG. 5 is a side view of a floating structure for water and sea moored by a conventional method, and FIG. 6 is a plan view of the floating structure of FIG. 5. W... Ice area, G... Seabed, 1... Floating body, floating structure, 6... Mooring rope, 7...
Separation device, 7A, 7B... Separation device member, 13...
Hole, 14...Drilling equipment, 15...Pipe, 16...Transmitter, 17...Signal, 18...Ballast water.
Claims (1)
物において、海底に設置され、この海底面より充分に高
い位置に前記係留索との接合部分が設けられている海中
基礎と前記浮体との間が係留索によって接合されており
、しかもこの係留索には前記浮体からの信号によって離
脱可能な切離装置装置が設けられていることを特徴とす
る氷海用浮遊構造物。In a floating structure for ice seas in which a floating body is moored by a plurality of mooring lines, the floating body is connected to an underwater foundation that is installed on the seabed and has a joint part with the mooring lines at a position sufficiently higher than the seabed surface. 1. A floating structure for ice seas, characterized in that the mooring lines are connected by a mooring line, and the mooring line is provided with a disconnection device that can be detached by a signal from the floating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15210684A JPS6130484A (en) | 1984-07-24 | 1984-07-24 | Buoyant structure for iced sea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15210684A JPS6130484A (en) | 1984-07-24 | 1984-07-24 | Buoyant structure for iced sea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6130484A true JPS6130484A (en) | 1986-02-12 |
Family
ID=15533182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15210684A Pending JPS6130484A (en) | 1984-07-24 | 1984-07-24 | Buoyant structure for iced sea |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6130484A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011149658A1 (en) * | 2010-05-28 | 2011-12-01 | Conocophillips Company | Ice data collection system |
| CN103231779B (en) * | 2008-02-05 | 2015-11-18 | 摩斯海运公司 | A kind of ship that can be used for the drilling of many frozen water territory |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593311A (en) * | 1982-06-30 | 1984-01-10 | Yokogawa Hokushin Electric Corp | Corrector for speed error of gyro compass |
-
1984
- 1984-07-24 JP JP15210684A patent/JPS6130484A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593311A (en) * | 1982-06-30 | 1984-01-10 | Yokogawa Hokushin Electric Corp | Corrector for speed error of gyro compass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231779B (en) * | 2008-02-05 | 2015-11-18 | 摩斯海运公司 | A kind of ship that can be used for the drilling of many frozen water territory |
| WO2011149658A1 (en) * | 2010-05-28 | 2011-12-01 | Conocophillips Company | Ice data collection system |
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