| 鑽頭直徑範圍 |
20.01-21.80, 21.81-24.49, 25,00–26,40, 26,41-28,70, 28,71–31,00, 31,01–33,30, 33,31–36,20, 36,21–39,60, 39,61–43,00, 43,01–47,00, 47,01–51,70, 51,71–56,20, 56,21–65,00, 60,61–65,00, 65,00-69.84, 69.85-74.9, 75.0-79.99, 80.0-88.99, 89.00-99.99, 100.00-114.29, 114.30-124.99, 125.00-135.99, 136.00-147.99, 148.00-159.99, 160.00-171.99, 172.00-183.9
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| 鑽管範圍 |
01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 13E, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
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