JPS6015787Y2 - Icy riser tube protection device - Google Patents
Icy riser tube protection deviceInfo
- Publication number
- JPS6015787Y2 JPS6015787Y2 JP15898782U JP15898782U JPS6015787Y2 JP S6015787 Y2 JPS6015787 Y2 JP S6015787Y2 JP 15898782 U JP15898782 U JP 15898782U JP 15898782 U JP15898782 U JP 15898782U JP S6015787 Y2 JPS6015787 Y2 JP S6015787Y2
- Authority
- JP
- Japan
- Prior art keywords
- protection device
- riser
- cylindrical member
- icy
- tube protection
- 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.)
- Expired
Links
Landscapes
- Earth Drilling (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【考案の詳細な説明】
本考案は水海上に設置される海上構造物のライザー管を
流氷等から保護するための水海用うイザー管保護装置に
関するものである。[Detailed Description of the Invention] The present invention relates to a riser pipe protection device for use in water and sea for protecting riser pipes of offshore structures installed in water and sea from drift ice and the like.
オープン・シー等に設置される石油掘削用のリグ等の従
来の海上構造物では、その上部デツキ構造物より海底に
向ってライザー管を設けているが、そのライザー管の流
氷に対する保護装置は設けられておらず、流氷の衝突、
または圧力により、ライザー管が破壊、または損傷する
という問題がある。Conventional offshore structures, such as oil drilling rigs installed in the open sea, have riser pipes extending from the upper deck structure toward the seabed, but there is no protection device for the riser pipes from drifting ice. collision of ice floes,
Or there is a problem that the riser pipe may be destroyed or damaged due to pressure.
そこで、本考案は上記従来の海上構造物から海底に向っ
て設けられたライザー管を流氷等から保護することを目
的としてなされたものである。Therefore, the present invention was developed with the aim of protecting the riser pipes installed from the above-mentioned conventional offshore structures toward the seabed from drift ice and the like.
即ち、本考案の水海用うイザー管保護装置は、上部デツ
キ構造物から海底に向ってライザー管を設けた海上構造
物において、該ライザー管の海水面付近の周囲を覆う筒
状部材を、該上部デツキ構造物の下部に、取外し可能に
設けることにより構成される。That is, the underwater riser tube protection device of the present invention is a marine structure in which a riser tube is provided from an upper deck structure toward the seabed, and a cylindrical member that covers the periphery of the riser tube near the sea surface. It is constructed by being removably provided at the lower part of the upper deck structure.
以下、図面を参照して本考案の実施例を説明するが、第
１図は、本考案の実施例１における水海用うイザー管保
護装置を設けた海上構造物の側面図、第２図は第１図の
Ａ−Ａ方向の平断面図、第３図は第１図の筒状部材の拡
大斜視図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a marine structure equipped with an iser tube protection device for water and sea according to Embodiment 1 of the present invention, and FIG. 1 is a plan sectional view taken along the line A-A in FIG. 1, and FIG. 3 is an enlarged perspective view of the cylindrical member shown in FIG. 1.
まず、第１図に示す海上構造物は、石油掘削用のセミサ
ブ形のリグであり、その上部デツキ構造物１は、水中に
あるポンツーン２に４本の支柱３により支持されており
、この上部デツキ構造物１から海底に向ってライザー管
４が設けられており、このライザー管４は図示されてい
ない海底設備に接続されている。First, the offshore structure shown in Fig. 1 is a semi-sub-type rig for oil drilling, and its upper deck structure 1 is supported by four struts 3 on a pontoon 2 in the water. A riser pipe 4 is provided from the deck structure 1 toward the seabed, and this riser pipe 4 is connected to submarine equipment (not shown).
そこで、本考案では上記上部デツキ構造物１の底部に設
けたライザー管４の管取付用ガイド５の下部に、このラ
イザー管４の海水面り付近の周囲を覆う第３図に示すご
とき筒状部材６を、この管取付用ガイド５に対しジヨイ
ント７Ａにより取外し可能に設けている。Therefore, in the present invention, a cylindrical shape as shown in FIG. A member 6 is removably provided with a joint 7A with respect to the pipe attachment guide 5.
この筒状部材６は、第３図に示すごとく竪方向２分割の
２個の部品で構成し、その一端部をヒンジ６Ａで接続し
、かつその他端部を連結金具６Ｂで連結可能とすること
により、ライザー管４の外側からこの筒状部材６を装着
可能とし、更に、その上部を４本のジョイン）？Ａで上
部デツキ構造物１の底部に設けた管取付用ガイド５に取
付けた後、その下部をジヨイント７Ｂ及びワイヤー８、
またはチェーンなどを介して４本の支柱３、またはポン
ツーン２に取付けている。As shown in FIG. 3, this cylindrical member 6 is composed of two vertically divided parts, one end of which is connected by a hinge 6A, and the other end can be connected by a connecting fitting 6B. This allows the cylindrical member 6 to be attached from the outside of the riser pipe 4, and furthermore, the upper part of the cylindrical member 6 can be attached with four joins). After attaching it to the pipe installation guide 5 provided at the bottom of the upper deck structure 1 at A, the lower part is attached to the joint 7B and the wire 8,
Alternatively, it is attached to four pillars 3 or pontoons 2 via chains or the like.
なお、この筒状部材６は上記実施例１のごとく、円筒状
以外のものでも良く、例えば第４図の実施例２における
筒状部材６′のごとく、海水面り付近が下方に傾斜した
円錐台形状のもの、または第５図の実施例３における筒
状部材６″のごとく、海水面り付近が上方に傾斜した円
錐台形状のものでも良く、このように傾斜をつけること
により、海水面りの流氷９に対する砕氷能力をもたせる
ことができる。Incidentally, this cylindrical member 6 may be of a shape other than a cylinder as in the above-mentioned embodiment 1. For example, as in the cylindrical member 6' in the embodiment 2 shown in FIG. It may be trapezoidal, or it may be a truncated cone with an upward slope near the sea level, as in the case of the cylindrical member 6'' in Embodiment 3 shown in FIG. It is possible to provide the ice crushing ability for the drift ice 9.
以上の構、我からなる本考案の水海用ライザー保護装置
を構成する筒状部材６．６’、６″は、ライザー管４を
流氷９から保護することになるので、流氷に対して抵抗
力を有する強度のものが要求されるが、流氷期以外の季
節には、逆に波浪により抵抗を受けるので、流氷期以外
にはこの筒状部材６．６’、６″を容易に引揚で可能に
している。With the above structure, the cylindrical members 6, 6', 6'' constituting the water/sea riser protection device of the present invention protect the riser pipe 4 from the drift ice 9, so they resist against the drift ice. However, in seasons other than the drift ice season, the cylindrical members 6.6' and 6" cannot be easily salvaged because they are resisted by the waves. making it possible.
従って、本考案の水海用ライザー管保護装置を、流氷域
にて操業する海上構造物に適用すれば、ライザー管を流
氷から保護することができ、流氷期における操業を安全
に維持すると共に、この保護装置は取付し可能であるの
で、オープン・シーにおける使用時、または流氷期以外
の季節には、この保護装置を取り外すことにより、波浪
時のリグ全体にかかる波力を小さくすることができる。Therefore, if the water and sea riser pipe protection device of the present invention is applied to offshore structures operating in drift ice areas, riser pipes can be protected from drift ice, operations can be maintained safely during the drift ice season, and This protective device can be installed, so when used in the open sea or in seasons other than the drift ice season, by removing this protective device it is possible to reduce the wave force applied to the entire rig during waves. .
第１図は本考案の実施例１における水海用ライザー管保
護装置を設けた海上構造物の側面図、第２図は第１図の
Ａ−Ａ方向の平断面図、第３図は第１図の筒状部材の拡
大斜視図、第４図は本考案の実施例２における筒状部材
の側面図、第５図は本考案の実施例３における筒状部材
の側面図である。
１・・・・・・上部デツキ構造物、４・・・・・・ライ
ザー管、５・・・・・・管取付用ガイド、６．６’、６
’−・・・・・筒状部材、７Ａ・・・・・・ジヨイント
、７Ｂ・・・・・・ジヨイント、９・・・・・・流氷、
Ｌ・・・・・・海水面。Fig. 1 is a side view of a marine structure equipped with a water riser pipe protection device according to Embodiment 1 of the present invention, Fig. 2 is a plan cross-sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a 1 is an enlarged perspective view of the cylindrical member in FIG. 1, FIG. 4 is a side view of the cylindrical member in Embodiment 2 of the present invention, and FIG. 5 is a side view of the cylindrical member in Embodiment 3 of the present invention. 1... Upper deck structure, 4... Riser pipe, 5... Pipe installation guide, 6.6', 6
'-...Tubular member, 7A...Joint, 7B...Joint, 9...Drift ice,
L...Sea level.
Claims (1)
海上構造物において、該ライザー管の海水面付近の周囲
を覆う筒状部材を、該上部デツキ構造物の下部に、取外
し可能に設けたことを特徴とする水海用うイザー管保護
装置。In an offshore structure in which a riser pipe is provided from an upper deck structure toward the seabed, a cylindrical member that covers the periphery of the riser pipe near the sea surface is removably provided at the lower part of the upper deck structure. An iser tube protection device for use in water and seawater.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15898782U JPS6015787Y2 (en) | 1982-10-22 | 1982-10-22 | Icy riser tube protection device |
| NO831427A NO831427L (en) | 1982-10-22 | 1983-04-22 | OFFSHORE OIL DRILLING CONSTRUCTION. |
| FI831402A FI831402L (en) | 1982-10-22 | 1983-04-25 | OLJEBORRNINGSSTRUKTUR |
| CA000426630A CA1197183A (en) | 1982-10-22 | 1983-04-25 | Marine riser protector for use on offshore oil drilling rigs in icy waters |
| US06/490,147 US4505618A (en) | 1982-10-22 | 1983-04-29 | Marine riser protector for use on offshore oil drilling rigs in icy waters |
| NO863035A NO863035D0 (en) | 1982-10-22 | 1986-07-28 | OFFSHORE OIL DRILLING CONSTRUCTION. |
| FI883687A FI883687A0 (en) | 1982-10-22 | 1988-08-08 | OLJEBORRNINGS-OFFSHORESTRUKTION. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15898782U JPS6015787Y2 (en) | 1982-10-22 | 1982-10-22 | Icy riser tube protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5965040U JPS5965040U (en) | 1984-04-28 |
| JPS6015787Y2 true JPS6015787Y2 (en) | 1985-05-17 |
Family
ID=30350106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15898782U Expired JPS6015787Y2 (en) | 1982-10-22 | 1982-10-22 | Icy riser tube protection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015787Y2 (en) |
-
1982
- 1982-10-22 JP JP15898782U patent/JPS6015787Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5965040U (en) | 1984-04-28 |
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