国際石油開発 こくさいせきゆかいはつ Meanings Noun INPEX (Japanese petroleum company) Kanji 国 country. Read as コク. 際 occasion. Read as サイ. 石 stone. Read as セキ. 油 oil 開 open. Read as カイ. 発 emit. Read as ハツ. Jinuma: Japanese Dictionary · Word lists