Step-Type Drag Bits

step type drag bit 1.certified by ISO9001&API 2.high quality, competitive price 3.large number of stock step type drag bitA drag bit is a drill bit usually designed for use in soft formations such as sand, clay, or some soft rock. However, they will not work well in coarse gravel or hard rock formations. Uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Whenever possible, they should be used to drill pilot holes because they produce cuttings that are easiest to log.

Step type bits are the most common type of drag bit used in the world today. They are primarily designed for soft to medium formations.

Size	Type Pin	Wt. (lbs.)
2 3/4" - 3 1/2"	4 THD N - Rod	3 1/2
2 5/8" - 4 3/4"	2 3/8" API	5 1/2
4 7/8" - 5 1/8"	2 3/8" API	7
5 1/4" - 5 1/2"	2 3/8" API	8
5 5/8" - 6"	2 3/8" API	8
6 1/8" - 6 1/4"	2 3/8" API	8 1/2
6 1/2"- 6 3/4"	2 3/8" API	9
5 1/2" - 6 3/4"	3 1/2" API	22
6 7/8" - 7 7/8"	3 1/2" API	23
8" - 9"	3 1/2" API	24
9 1/8" - 10 7/8"	3 1/2" API	25-30
7 7/8" - 8 7/8"	4 1/2" API	40
9" - 9 7/8"	4 1/2" API	42
10" - 10 7/8"	3 1/2" API or 4 1/2" API	45
11" - 12 1/4"	3 1/2" API or 4 1/2" API	50

 

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Step-Type Drag Bits