… Wells drilled for oil or natural gas can be classified as follows. Wells aimed at directly finding oil or gas layers are classified as wildcat wells, appraisal wells (evaluation wells), and development wells. Depending on the condition at the end of drilling, they can be further classified as oil wells, gas wells, condensate wells, and dry wells. Exploration wells are intended to discover new oil and gas layers, and are used to drill new geological structures where no oil or gas layers have yet been discovered ((1)).… *Some of the terminology explanations that mention "evaluation well" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 石油や天然ガスを対象として掘削される坑井は次のように分類することができる。直接油層またはガス層を掘りあてることを目的とする坑井は,試掘井wildcat,探掘井appraisal well(evaluation well),採掘井development wellに分けられ,さらに掘削終了時の状態によって,それぞれ油井,ガス井,コンデンセート井,空井戸に分けられる。試掘井は新しい油・ガス層の発見を目的とするもので,まだ油・ガス層の発見されていない新しい地質構造の試掘井((1)。… ※「evaluation well」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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