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  • {{#category_index:F|fishtail bit}} A drilling bit with cutting edges of hard alloys; also called a ''drag bit''. Used to drill soft formations. See Figure [[Special:MyLanguage/Dictionar
    291 bytes (41 words) - 17:31, 16 January 2018
  • 215 bytes (33 words) - 15:18, 31 May 2019
  • {{#category_index:F|fishtail bit}} A drilling bit with cutting edges of hard alloys; also called a ''drag bit''. Used to drill soft formations. See Figure [[Special:MyLanguage/Dictionar
    232 bytes (35 words) - 08:24, 28 March 2018

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  • ...ts, plastering the drill hole, controlling formation pressure, cooling the bit, etc.<ref>{{cite book |last=Gerding |first=Mildred |date=1986 |title=Fundam ...the bit without bending the drill pipe. Increasing the weight on the drill bit by pushing on the drill stem might cause it to bend, resulting in a crooked
    4 KB (627 words) - 13:11, 1 March 2017
  • {{#category_index:F|fishtail bit}} A drilling bit with cutting edges of hard alloys; also called a ''drag bit''. Used to drill soft formations. See Figure [[Special:MyLanguage/Dictionar
    291 bytes (41 words) - 17:31, 16 January 2018
  • ...sand and clay as the drill stem is rotated. <b>(b)</b> Rock bit or roller bit; teeth on rock bits are on wheels that turn as the drill stem is rotated, s
    513 bytes (96 words) - 15:36, 20 December 2011
  • ...ts, plastering the drill hole, controlling formation pressure, cooling the bit, etc.<ref>{{cite book |last=Gerding |first=Mildred |date=1986 |title=Fundam ...the bit without bending the drill pipe. Increasing the weight on the drill bit by pushing on the drill stem might cause it to bend, resulting in a crooked
    4 KB (601 words) - 13:11, 1 March 2017
  • {{#category_index:F|fishtail bit}} A drilling bit with cutting edges of hard alloys; also called a ''drag bit''. Used to drill soft formations. See Figure [[Special:MyLanguage/Dictionar
    232 bytes (35 words) - 08:24, 28 March 2018