海かい底てい油ゆ田でんMeaningsNoun1. offshore oil fieldKanji used海sea底bottom油oil田rice fieldPitch accentかいていゆでんComposed of海かい底ていbottom of the ocean; seafloor; seabed; undersea; submarineNoun油ゆ田でんoil fieldNounExamples1海かい底てい油ゆ田でんの開かい発はつをしたい。We want to explore an underwater oil field.