Tar sand

Japanese: tar sand(英語表記)tarsand
Tar sand

…Oil sands, also called tar sands, are sand or sandstone containing heavy oil that cannot be extracted by conventional crude oil extraction, i.e., by flow extraction. Similar high-viscosity heavy oils are sometimes called heavy oils, but these have specific gravity of API 10-20° and viscosity of 100-10,000 cp, whereas oil sands are heavier and more viscous than bitumen (as defined by the 1982 UNITAR Conference).

*Some of the terminology that mentions "tar sand" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…油砂,タールサンドtar sandともいい,通常の原油採取すなわち流動採取による方法では採収できない重質油を含む砂あるいは砂岩をさす。同様な高粘度重質油をヘビーオイルと呼ぶ場合があるが,これは比重API10~20゜,粘性100~1万cpであり,オイルサンドはそれより重く粘性も高いビチューメンである(1982年のUNITARコンファレンスの定義)。…

※「tar sand」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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