Mobile offshore drilling rig - Mobile offshore drilling rig

Japanese: 移動式海洋掘削装置 - いどうしきかいようくっさくそうち
Mobile offshore drilling rig - Mobile offshore drilling rig

...Therefore, this method is only used when the existence of economically extractable quantities of oil or natural gas has already been confirmed, and is not suitable for offshore drilling at the exploration stage. In such cases, mobile offshore drilling units are used.
[Mobile Offshore Drilling Rig]
They are built on a steel platform and can be moved between remote drilling sites in the ocean while carrying drilling machinery, drilling equipment, and all the necessary facilities for workers and their accommodation. They are broadly divided into floating and ground-based types.

*Some of the terms used in the description of "mobile offshore drilling rig" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…したがって,すでに経済的に採収可能なだけの量の石油や天然ガスの存在が確認されている場合にのみ採用される方式で,探鉱段階の海洋掘削には適さない。このような場合には移動式海洋掘削装置が使用される。
[移動式海洋掘削装置]
 鋼構造のプラットホームの上に掘削機械や掘削用の資・機材,作業員とその居住に必要なあらゆる付帯設備を搭載したまま,海域部の遠く離れた掘削地点の間をそっくり移動できるもので,浮上式と接地式に大別される。…

※「移動式海洋掘削装置」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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